Analysis

  • max time kernel
    91s
  • max time network
    153s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220414-en
  • submitted
    20-04-2022 04:23

General

  • Target

    814081a9bfb3231b1c007488e7fb6c720586483f35330742bf3049e90398b85b.exe

  • Size

    376KB

  • MD5

    b159b0ad1bf4638eef29031b66dfdfe9

  • SHA1

    e81d45d019c20e3d256844f1b234350e5e4a7855

  • SHA256

    814081a9bfb3231b1c007488e7fb6c720586483f35330742bf3049e90398b85b

  • SHA512

    41351db0bd767270b40a83ab4c32910eac4d9192edeca0b2c460439228f6325296f70dfcacb8d776ce1456d0549cc19227eba4c6bb22d53cfa964a3989d4f7d5

Score
10/10

Malware Config

Signatures

  • OnlyLogger

    A tiny loader that uses IPLogger to get its payload.

  • 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
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 6 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\814081a9bfb3231b1c007488e7fb6c720586483f35330742bf3049e90398b85b.exe
    "C:\Users\Admin\AppData\Local\Temp\814081a9bfb3231b1c007488e7fb6c720586483f35330742bf3049e90398b85b.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:4156
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c taskkill /im "814081a9bfb3231b1c007488e7fb6c720586483f35330742bf3049e90398b85b.exe" /f & erase "C:\Users\Admin\AppData\Local\Temp\814081a9bfb3231b1c007488e7fb6c720586483f35330742bf3049e90398b85b.exe" & exit
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:4164
      • C:\Windows\SysWOW64\taskkill.exe
        taskkill /im "814081a9bfb3231b1c007488e7fb6c720586483f35330742bf3049e90398b85b.exe" /f
        3⤵
        • Kills process with taskkill
        • Suspicious use of AdjustPrivilegeToken
        PID:1988
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 4156 -s 1268
      2⤵
      • Program crash
      PID:5052
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 480 -p 4156 -ip 4156
    1⤵
      PID:4236

    Network

    MITRE ATT&CK Enterprise v6

    Replay Monitor

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    Downloads

    • memory/4156-130-0x000000000087D000-0x00000000008A5000-memory.dmp

      Filesize

      160KB

    • memory/4156-131-0x00000000007B0000-0x00000000007F6000-memory.dmp

      Filesize

      280KB

    • memory/4156-132-0x0000000000400000-0x0000000000519000-memory.dmp

      Filesize

      1.1MB