phobos | d4cb20dba15d88c38c35be69fe04538b4f9bb0a12edb51ff23c0171b584edf08 | Triage

Sharing

General

Target

42553b52c33d2b5f8a747819d0bf97d5.exe
Size

602KB
Sample

231013-1hf1xabh4s
MD5

42553b52c33d2b5f8a747819d0bf97d5
SHA1

ae1bc8822e41c65caedc07dd98b0d9156e2a28cd
SHA256

d4cb20dba15d88c38c35be69fe04538b4f9bb0a12edb51ff23c0171b584edf08
SHA512

5ed02973a1a88dc4835a933e84d422ecad64dd33645d4621ecd396a8786269c7616b5e68a6744912c5f3bc831a1b897b89306b773577c90dfbf766e1186ffe4c
SSDEEP

12288:k1gLpE124JdB+jegjTfWU3qU8FyFTdeQUSonYLVqY2Vi:HaM4JaSMoF4deLgVKQ

Score

10^/10

phobos evasion persistence ransomware spyware stealer

Malware Config

Targets

- Target
  
  42553b52c33d2b5f8a747819d0bf97d5.exe
- Size
  
  602KB
- MD5
  
  42553b52c33d2b5f8a747819d0bf97d5
- SHA1
  
  ae1bc8822e41c65caedc07dd98b0d9156e2a28cd
- SHA256
  
  d4cb20dba15d88c38c35be69fe04538b4f9bb0a12edb51ff23c0171b584edf08
- SHA512
  
  5ed02973a1a88dc4835a933e84d422ecad64dd33645d4621ecd396a8786269c7616b5e68a6744912c5f3bc831a1b897b89306b773577c90dfbf766e1186ffe4c
- SSDEEP
  
  12288:k1gLpE124JdB+jegjTfWU3qU8FyFTdeQUSonYLVqY2Vi:HaM4JaSMoF4deLgVKQ
Score

10^/10

phobos evasion persistence ransomware spyware stealer
- Phobos
  Phobos ransomware appeared at the beginning of 2019.
  ransomware phobos
- Deletes shadow copies
  Ransomware often targets backup files to inhibit system recovery.
  ransomware
- Modifies boot configuration data using bcdedit
  ransomware evasion
- Renames multiple (215) files with added filename extension
  This suggests ransomware activity of encrypting all the files on the system.
  ransomware
- Deletes backup catalog
  Uses wbadmin.exe to inhibit system recovery.
  ransomware
- Modifies Windows Firewall
  evasion
- Drops startup file
- Reads user/profile data of web browsers
  Infostealers often target stored browser data, which can include saved credentials etc.
  spyware stealer
- Adds Run key to start application
  persistence
- Drops desktop.ini file(s)
- Suspicious use of SetThreadContext
behavioral1 behavioral2

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Command and Scripting Interpreter

Persistence

Create or Modify System Process

Windows Service

Boot or Logon Autostart Execution

Registry Run Keys / Startup Folder

Privilege Escalation

Create or Modify System Process

Windows Service

Boot or Logon Autostart Execution

Registry Run Keys / Startup Folder

Defense Evasion

Indicator Removal

File Deletion

Modify Registry

Credential Access

Unsecured Credentials

Credentials In Files

Discovery

Query Registry

Peripheral Device Discovery

System Information Discovery

Lateral Movement

Collection

Data from Local System

Exfiltration

Command and Control

Impact

Inhibit System Recovery

Resource Development

Reconnaissance

Tasks

static1

behavioral1

phobosevasionpersistenceransomware

behavioral2

phobosevasionpersistenceransomwarespywarestealer