New Ransomware Victim Emerges: Singapore Targeted by “Devman” Group

A new name has appeared on the ransomware landscape, and this time, it’s linked to Singapore. The notorious ransomware group known as Devman has claimed responsibility for breaching a Singapore-based target, according to a post shared by ThreatMon Ransomware Monitoring on April 20, 2025.

Cybercriminal activity continues to evolve at an alarming pace, and threat actors are increasingly targeting high-value regions and organizations with geopolitical or economic significance. Singapore, known for its advanced infrastructure and financial institutions, has now entered the radar of this active ransomware collective operating in the shadows of the dark web.

Ransomware Report: Singapore Victim Identified by Devman Group

– Threat Actor: Devman Ransomware Group

– Victim: An unidentified organization based in Singapore

Date of Attack: April 20, 2025, 15:19:44 UTC+3
First Public Mention: Posted by @TMRansomMon, part of the ThreatMon Threat Intelligence initiative
Platform Used for Disclosure: Dark web monitoring alert via X (formerly Twitter)
Source of Threat Intelligence: ThreatMon Threat Intelligence Team
Purpose of Monitoring: Track indicators of compromise (IOCs) and command & control (C2) activity
Public Visibility: As of the post, only 12 public views had been registered
Nature of Ransomware Group: Devman is linked to previous attacks with a focus on data exfiltration and extortion
Modus Operandi: Encrypt sensitive files, demand cryptocurrency in exchange for the decryption key
Rationale for Targeting Singapore: Likely due to the region’s financial and data importance
Incident Context: No specific company name released yet, potentially due to ongoing negotiations or fear of reputational damage
Patterns Observed: Devman continues to operate under anonymity, typically publishing victims’ names only after failed ransom negotiations
Victim Response: Unknown – standard responses include incident containment, forensic analysis, and possible law enforcement engagement
Impact Level: Medium to High (Pending more detail)
Data Exfiltration Possibility: High, based on Devman’s known tactics
Community Impact: Increased awareness for Singaporean cybersecurity teams
ThreatMon’s Role: Active dark web monitoring and alert dissemination
Victim’s Sector: Not disclosed yet – pending more detail from open-source or industry-specific intelligence
C2 Infrastructure: Not included in the report, though likely monitored by ThreatMon
First Signal: Detected via ransomware group’s publication on dark web forums
Importance for APAC Cybersecurity: Growing threat to Southeast Asian countries, previously under less direct pressure
Implications: Calls for stronger internal SOC and threat hunting capabilities
Next Steps for Security Teams: Patch management, EDR deployment, and threat intel integration
Red Team Insight: Need to simulate Devman tactics to identify possible attack vectors
Recommended Actions: Monitor IOCs released by ThreatMon GitHub repository
Media Attention: Minimal, suggesting either a recent breach or underreported incident
Potential Victims’ Motivation to Stay Silent: Fear of regulatory backlash or brand damage
Future Projections: Devman could shift toward more aggressive extortion methods
Community Call: Encourage Singapore-based firms to audit their ransomware readiness
Geopolitical Sensitivity: Singapore is a strategic economic hub – this attack could ripple across global partners
Law Enforcement Involvement: Not confirmed yet, but likely to become involved once victim’s identity is revealed
Threat Visibility: Low at the moment; organizations should remain proactive

What Undercode Say:

The activity observed around the Devman ransomware group targeting a Singapore-based entity marks a notable development in regional cyber warfare. While many global ransomware groups concentrate on targets in the US, EU, and parts of Latin America, this move signals an increasing willingness to compromise organizations in Asia-Pacific with previously lower exposure.

From a threat intelligence standpoint, this incident is a textbook example of the critical role that proactive dark web surveillance plays in real-time cybersecurity defense. ThreatMon’s alert highlights how early detection through dark web crawling and analysis of ransomware group behavior can provide defenders a slim window of reaction time.

We believe the following insights are critical:

Undercode analysts track Devman’s behavioral patterns, indicating a hybrid approach between classic ransomware extortion and modern double-extortion (data theft and threat to publish).
The fact that Singapore is being targeted isn’t random—it suggests Devman is expanding its operations geographically, possibly testing new regions for vulnerabilities or lower resistance.

3. This incident aligns with a broader trend

Singapore’s tech and finance ecosystem makes it a rich target with significant negotiation leverage, especially for criminals seeking fast, quiet payouts.
As of now, Devman hasn’t released stolen data, indicating either successful negotiation, early-stage extortion, or leverage-seeking prior to exposure.
From a SOC (Security Operations Center) perspective, this attack likely originated through phishing, vulnerable RDP endpoints, or unpatched software components—hallmarks of Devman tactics.
We recommend organizations to follow the ThreatMon GitHub IOC list, as it may soon contain hashes, IPs, and domains linked to this latest campaign.
Organizations must deploy behavior-based EDR systems to detect anomalies similar to the ones used in Devman ransomware payloads.
CISOs in Southeast Asia should begin risk-mapping based on attacker intent—not just known vulnerabilities.
There’s a noticeable gap in visibility between initial compromise and ransomware execution, indicating that Devman might still be in the victim’s system post-encryption.
The low number of public views on the post (12 at the time of writing) is proof that dark web monitoring still flies under the radar, and this data isn’t reaching mainstream alert systems fast enough.
We also see increasing evidence of ransomware cartels sharing infrastructure and malware kits, which may include Devman collaborating with lesser-known threat groups.
While Devman is relatively obscure compared to giants like LockBit or BlackCat, its tactics are no less dangerous—they focus on precision, timing, and digital stealth.

Undercode continues to monitor Devman’s activity across forums, breach marketplaces, and blockchain transactions to uncover ransom amounts and potential cryptocurrency flows. We encourage all cybersecurity professionals to prepare for regional escalation and adapt accordingly.

Fact Checker Results:

– Confirmation:

Source Authenticity: The ThreatMon account is legitimate, connected to a known threat intelligence provider.
Victim Details: No organization name disclosed yet, likely due to confidentiality or negotiation efforts.