umbral | cad2b6b2e9fbc51734757d518386ce7940fb6d0bfa887268d313faa7e19d4ec7 | Triage

Sharing

General

Target

both executors.sfx.exe
Size

20.3MB
Sample

240810-a6ngsaxflq
MD5

031e8de494548e53e70a0fb6b663eda4
SHA1

0d5c7733fefbaec2fcb7b65f827ac555aadcaebf
SHA256

cad2b6b2e9fbc51734757d518386ce7940fb6d0bfa887268d313faa7e19d4ec7
SHA512

8915d0cae49f55166546496940721293a5bbcf14bfd337022458d944d410b42b1ae4768d062c8f2eafec4380e346f59bfe8a676ab2cafcd84956e53eb2a4d064
SSDEEP

393216:9OrF7Xbsfeg2E3Zr62Q07vnUPHzWjtb2c75AOxeOlNUnBS8T/RnB:9ORI328Zr6JtTWjtb2c75AOI7n0+/RnB

Score

10^/10

umbral credential_access discovery execution spyware stealer

Malware Config

Targets

- Target
  
  both executors.sfx.exe
- Size
  
  20.3MB
- MD5
  
  031e8de494548e53e70a0fb6b663eda4
- SHA1
  
  0d5c7733fefbaec2fcb7b65f827ac555aadcaebf
- SHA256
  
  cad2b6b2e9fbc51734757d518386ce7940fb6d0bfa887268d313faa7e19d4ec7
- SHA512
  
  8915d0cae49f55166546496940721293a5bbcf14bfd337022458d944d410b42b1ae4768d062c8f2eafec4380e346f59bfe8a676ab2cafcd84956e53eb2a4d064
- SSDEEP
  
  393216:9OrF7Xbsfeg2E3Zr62Q07vnUPHzWjtb2c75AOxeOlNUnBS8T/RnB:9ORI328Zr6JtTWjtb2c75AOI7n0+/RnB
Score

10^/10

umbral credential_access discovery execution spyware stealer
- Detect Umbral payload
- Umbral
  Umbral stealer is an opensource moduler stealer written in C#.
  stealer umbral
- Credentials from Password Stores: Credentials from Web Browsers
  Malicious Access or copy of Web Browser Credential store.
  credential_access stealer
- Command and Scripting Interpreter: PowerShell
  Using powershell.exe command.
  execution
- Drops file in Drivers directory
- Executes dropped EXE
- Reads user/profile data of web browsers
  Infostealers often target stored browser data, which can include saved credentials etc.
  spyware stealer
- Legitimate hosting services abused for malware hosting/C2
- Looks up external IP address via web service
  Uses a legitimate IP lookup service to find the infected system's external IP.
behavioral1 behavioral2

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

PowerShell

Persistence

Privilege Escalation

Defense Evasion

Hide Artifacts

Hidden Files and Directories

Modify Registry

Credential Access

Credentials from Password Stores

Credentials from Web Browsers

Unsecured Credentials

Credentials In Files

Discovery

Remote System Discovery

System Information Discovery

System Network Configuration Discovery

Internet Connection Discovery

Lateral Movement

Collection

Data from Local System

Command and Control

Web Service

Exfiltration

Impact

Tasks

static1

behavioral1

umbralcredential_accessdiscoveryexecutionspywarestealer

behavioral2