Analysis

  • max time kernel
    193s
  • max time network
    226s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220414-en
  • submitted
    08-05-2022 06:21

General

  • Target

    b854e4ad929ed52298efd7360164462b1c88514fd91e64ab686840ffea13fa03.exe

  • Size

    234KB

  • MD5

    646851362409b6712678ce00b0882750

  • SHA1

    a1725297e2ce8348d05a29f108fc10c2728ce074

  • SHA256

    b854e4ad929ed52298efd7360164462b1c88514fd91e64ab686840ffea13fa03

  • SHA512

    6d0c63e90e58853caa03cd01ee1e1e9e75418e03b29062768faa2217d19824279cb26e45fffe53353e3d4faa1dc338531a83326f0390dd038d661d832f1b99c9

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\b854e4ad929ed52298efd7360164462b1c88514fd91e64ab686840ffea13fa03.exe
    "C:\Users\Admin\AppData\Local\Temp\b854e4ad929ed52298efd7360164462b1c88514fd91e64ab686840ffea13fa03.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:4288
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c taskkill /im "b854e4ad929ed52298efd7360164462b1c88514fd91e64ab686840ffea13fa03.exe" /f & erase "C:\Users\Admin\AppData\Local\Temp\b854e4ad929ed52298efd7360164462b1c88514fd91e64ab686840ffea13fa03.exe" & exit
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:4444
      • C:\Windows\SysWOW64\taskkill.exe
        taskkill /im "b854e4ad929ed52298efd7360164462b1c88514fd91e64ab686840ffea13fa03.exe" /f
        3⤵
        • Kills process with taskkill
        • Suspicious use of AdjustPrivilegeToken
        PID:5076
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 4288 -s 1068
      2⤵
      • Program crash
      PID:5064
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 428 -p 4288 -ip 4288
    1⤵
      PID:2116

    Network

    MITRE ATT&CK Enterprise v6

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • memory/4288-130-0x00000000012E3000-0x000000000130B000-memory.dmp

      Filesize

      160KB

    • memory/4288-131-0x0000000001070000-0x00000000010B6000-memory.dmp

      Filesize

      280KB

    • memory/4288-132-0x0000000000400000-0x0000000000F98000-memory.dmp

      Filesize

      11.6MB

    • memory/4444-133-0x0000000000000000-mapping.dmp

    • memory/5076-134-0x0000000000000000-mapping.dmp