Analysis

  • max time kernel
    164s
  • max time network
    172s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220812-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
  • submitted
    30-10-2022 10:16

General

  • Target

    051a8439814976290735c9b8159ff602.exe

  • Size

    29KB

  • MD5

    051a8439814976290735c9b8159ff602

  • SHA1

    f317839ee7d3fbd9aeeda61aee79787093b1368f

  • SHA256

    1ac44eda1cc529647ffc10722a39e11da7c0cc9cff19b773a3af07f4baf7d664

  • SHA512

    739f7bc18816b45eec85e8955a8e64734cd12059b537ba57f66c78c0625b6bcea793d9fc39739684e4f2a666636b70c5dffb4d6712d536e86f73e2c89b42346d

  • SSDEEP

    384:OB+Sbj6NKgpi6h/AHHkQXOqDttYLmHvDKNrCeJE3WNgURSBe3Qua0U7Hb+8CDIQ5:EpgI6h/wHhtYLmP45NZyY/MHtgiij

Score
10/10

Malware Config

Extracted

Family

limerat

Wallets

bc1q233hm2e03j09e5zy52zqzt0sh7temfq9h4t3cl

Attributes
  • aes_key

    T3rr1f13r

  • antivm

    false

  • c2_url

    https://pastebin.com/raw/BhUB9EXY

  • delay

    3

  • download_payload

    false

  • install

    true

  • install_name

    scvhost.exe

  • main_folder

    UserProfile

  • pin_spread

    false

  • sub_folder

    \scvhostLog\

  • usb_spread

    false

Signatures

  • LimeRAT

    Simple yet powerful RAT for Windows machines written in .NET.

  • Executes dropped EXE 1 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Legitimate hosting services abused for malware hosting/C2 1 TTPs
  • Enumerates physical storage devices 1 TTPs

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

  • Creates scheduled task(s) 1 TTPs 1 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 6 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\051a8439814976290735c9b8159ff602.exe
    "C:\Users\Admin\AppData\Local\Temp\051a8439814976290735c9b8159ff602.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:376
    • C:\Windows\SysWOW64\schtasks.exe
      schtasks /create /f /sc ONLOGON /RL HIGHEST /tn LimeRAT-Admin /tr "'C:\Users\Admin\scvhostLog\scvhost.exe'"
      2⤵
      • Creates scheduled task(s)
      PID:2844
    • C:\Users\Admin\scvhostLog\scvhost.exe
      "C:\Users\Admin\scvhostLog\scvhost.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious use of AdjustPrivilegeToken
      PID:220

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\scvhostLog\scvhost.exe

    Filesize

    29KB

    MD5

    051a8439814976290735c9b8159ff602

    SHA1

    f317839ee7d3fbd9aeeda61aee79787093b1368f

    SHA256

    1ac44eda1cc529647ffc10722a39e11da7c0cc9cff19b773a3af07f4baf7d664

    SHA512

    739f7bc18816b45eec85e8955a8e64734cd12059b537ba57f66c78c0625b6bcea793d9fc39739684e4f2a666636b70c5dffb4d6712d536e86f73e2c89b42346d

  • C:\Users\Admin\scvhostLog\scvhost.exe

    Filesize

    29KB

    MD5

    051a8439814976290735c9b8159ff602

    SHA1

    f317839ee7d3fbd9aeeda61aee79787093b1368f

    SHA256

    1ac44eda1cc529647ffc10722a39e11da7c0cc9cff19b773a3af07f4baf7d664

    SHA512

    739f7bc18816b45eec85e8955a8e64734cd12059b537ba57f66c78c0625b6bcea793d9fc39739684e4f2a666636b70c5dffb4d6712d536e86f73e2c89b42346d

  • memory/220-140-0x0000000006290000-0x0000000006322000-memory.dmp

    Filesize

    584KB

  • memory/376-132-0x0000000000C80000-0x0000000000C8C000-memory.dmp

    Filesize

    48KB

  • memory/376-133-0x0000000005510000-0x00000000055AC000-memory.dmp

    Filesize

    624KB

  • memory/376-134-0x00000000055B0000-0x0000000005616000-memory.dmp

    Filesize

    408KB

  • memory/376-135-0x0000000006190000-0x0000000006734000-memory.dmp

    Filesize

    5.6MB