Overview

overview

10

Static

static

def42f9076...cb.exe

windows7_x64

10

def42f9076...cb.exe

windows10-2004_x64

10

Analysis

  • max time kernel
    149s
  • max time network
    182s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220414-en
  • submitted
    02/05/2022, 15:18

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General

  • Target
    def42f90767f46cd26702b62eca9c4329bfaca250c0bb8f67c5ba8981eb241cb.exe
  • Size 235KB
  • Sample220502-spz4csadfj
  • SHA256 def42f90767f46cd26702b62eca9c4329bfaca250c0bb8f67c5ba8981eb241cb
  • MD5 SHA1 SHA512
Score
10/10
onlyloggerloader

Malware Config

Signatures

  • OnlyLogger

    A tiny loader that uses IPLogger to get its payload.

    loaderonlylogger
  • OnlyLogger Payload 2 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

  • Program crash 1 IoCs
  • Kills process with taskkill 1 IoCs
    evasion
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 6 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\def42f90767f46cd26702b62eca9c4329bfaca250c0bb8f67c5ba8981eb241cb.exe
    "C:\Users\Admin\AppData\Local\Temp\def42f90767f46cd26702b62eca9c4329bfaca250c0bb8f67c5ba8981eb241cb.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:2900
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c taskkill /im "def42f90767f46cd26702b62eca9c4329bfaca250c0bb8f67c5ba8981eb241cb.exe" /f & erase "C:\Users\Admin\AppData\Local\Temp\def42f90767f46cd26702b62eca9c4329bfaca250c0bb8f67c5ba8981eb241cb.exe" & exit
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:4812
      • C:\Windows\SysWOW64\taskkill.exe
        taskkill /im "def42f90767f46cd26702b62eca9c4329bfaca250c0bb8f67c5ba8981eb241cb.exe" /f
        3⤵
        • Kills process with taskkill
        • Suspicious use of AdjustPrivilegeToken
        PID:1672
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 2900 -s 1288
      2⤵
      • Program crash
      PID:4564
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 456 -p 2900 -ip 2900
    1⤵
      PID:4660

    Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

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          Downloads

          memory/2900-130-0x0000000000538000-0x0000000000560000-memory.dmp
          Download

          memory/2900-131-0x0000000002110000-0x0000000002156000-memory.dmp
          Download

          memory/2900-132-0x0000000000400000-0x00000000004F5000-memory.dmp
          Download