1811c7b5ddcc6637a782bf32db70b60bd0bf3ec2b3498716591f718cda25fd14 | Triage

Sharing

General

Target

YellowSkull 2.0.exe
Size

2.5MB
Sample

240920-wtb4wazgrj
MD5

660e26001a8891e78135a09d3ec2623f
SHA1

bd95c1955be08eaecefa7b3dd1cbdac7387b6d06
SHA256

1811c7b5ddcc6637a782bf32db70b60bd0bf3ec2b3498716591f718cda25fd14
SHA512

590df723aaa52806f664adec89bf6e8e570a9c88b4858131fb59f23e31ab3302189393bceb58fe1aa71475065aefab2d093d5f8ad6296693d4124e5a10a34e92
SSDEEP

49152:cCEz1VWQraflEcY8GSFJ2CBUm5htDRvG0JuH0Xv6GVO8UKlo:cn14QilESfFim15rtxUuo

Score

10^/10

discovery evasion persistence ransomware trojan upx

Malware Config

Targets

- Target
  
  YellowSkull 2.0.exe
- Size
  
  2.5MB
- MD5
  
  660e26001a8891e78135a09d3ec2623f
- SHA1
  
  bd95c1955be08eaecefa7b3dd1cbdac7387b6d06
- SHA256
  
  1811c7b5ddcc6637a782bf32db70b60bd0bf3ec2b3498716591f718cda25fd14
- SHA512
  
  590df723aaa52806f664adec89bf6e8e570a9c88b4858131fb59f23e31ab3302189393bceb58fe1aa71475065aefab2d093d5f8ad6296693d4124e5a10a34e92
- SSDEEP
  
  49152:cCEz1VWQraflEcY8GSFJ2CBUm5htDRvG0JuH0Xv6GVO8UKlo:cn14QilESfFim15rtxUuo
Score

10^/10

discovery evasion persistence ransomware trojan upx
- UAC bypass
  evasion trojan
- Disables Task Manager via registry modification
  evasion
- Executes dropped EXE
- UPX packed file
  Detects executables packed with UPX/modified UPX open source packer.
  upx
- Adds Run key to start application
  persistence
- Sets desktop wallpaper using registry
  ransomware
behavioral1

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

Registry Run Keys / Startup Folder

Privilege Escalation

Abuse Elevation Control Mechanism

Bypass User Account Control

Boot or Logon Autostart Execution

Registry Run Keys / Startup Folder

Defense Evasion

Abuse Elevation Control Mechanism

Bypass User Account Control

Impair Defenses

Disable or Modify Tools

Modify Registry

Credential Access

Discovery

System Information Discovery

System Location Discovery

System Language Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Defacement

Tasks

static1

behavioral1

discoveryevasionpersistenceransomwaretrojanupx