Analysis

  • max time kernel
    151s
  • max time network
    156s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220414-en
  • submitted
    30-05-2022 01:07

General

  • Target

    0c0f27f2c4435b5bcf675c56d2d716c6364435d5f2415db8e291326c14da2f9e.exe

  • Size

    125KB

  • MD5

    cdcb8d03e87665854688fc9988bf4345

  • SHA1

    d749dfbf1418a8628382f9a808854eb1b36c83d0

  • SHA256

    0c0f27f2c4435b5bcf675c56d2d716c6364435d5f2415db8e291326c14da2f9e

  • SHA512

    6a60dbe438c55bfa99c5b4c7f9ed484d6fbc55f325551d0547355f8bb500df6025c8b4e32187f1f321fa13cce4685167f037763c9a93f92f498ddbe91b916619

Score
10/10

Malware Config

Extracted

Family

limerat

Attributes
  • aes_key

    pogiako123

  • antivm

    true

  • c2_url

    https://pastebin.com/raw/NvPAsz1f

  • delay

    3

  • download_payload

    false

  • install

    true

  • install_name

    licenseemu.exe

  • main_folder

    AppData

  • pin_spread

    true

  • sub_folder

    \ tofu\

  • usb_spread

    true

Signatures

  • LimeRAT

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

  • Executes dropped EXE 2 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
  • Maps connected drives based on registry 3 TTPs 4 IoCs

    Disk information is often read in order to detect sandboxing environments.

  • Suspicious use of SetThreadContext 2 IoCs
  • 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 20 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\0c0f27f2c4435b5bcf675c56d2d716c6364435d5f2415db8e291326c14da2f9e.exe
    "C:\Users\Admin\AppData\Local\Temp\0c0f27f2c4435b5bcf675c56d2d716c6364435d5f2415db8e291326c14da2f9e.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:3764
    • C:\Users\Admin\AppData\Local\Temp\0c0f27f2c4435b5bcf675c56d2d716c6364435d5f2415db8e291326c14da2f9e.exe
      "C:\Users\Admin\AppData\Local\Temp\0c0f27f2c4435b5bcf675c56d2d716c6364435d5f2415db8e291326c14da2f9e.exe"
      2⤵
      • Checks computer location settings
      • Maps connected drives based on registry
      • Suspicious use of WriteProcessMemory
      PID:2024
      • C:\Windows\SysWOW64\schtasks.exe
        schtasks /create /f /sc ONLOGON /RL HIGHEST /tn LimeRAT-Admin /tr "'C:\Users\Admin\AppData\Roaming\ tofu\licenseemu.exe'"
        3⤵
        • Creates scheduled task(s)
        PID:836
      • C:\Users\Admin\AppData\Roaming\ tofu\licenseemu.exe
        "C:\Users\Admin\AppData\Roaming\ tofu\licenseemu.exe"
        3⤵
        • Executes dropped EXE
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:2516
        • C:\Users\Admin\AppData\Roaming\ tofu\licenseemu.exe
          "C:\Users\Admin\AppData\Roaming\ tofu\licenseemu.exe"
          4⤵
          • Executes dropped EXE
          • Maps connected drives based on registry
          • Suspicious use of AdjustPrivilegeToken
          PID:3220

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\0c0f27f2c4435b5bcf675c56d2d716c6364435d5f2415db8e291326c14da2f9e.exe.log

    Filesize

    617B

    MD5

    47504b42411e2c23666d08795adae488

    SHA1

    92ba780125e2fcedc6223478504aa501adf95c06

    SHA256

    4b2747d4a45ae359c415f11d2a2d9e09e6a036aad39b40e284850603b64bbc98

    SHA512

    a2d33cb21ec121b9f857c81df3992da216859f5df69cc8da9edbd91eeb21f45b7ac79459d0c6bc08f09bc33684dfff62a20feddd13d5367ad717095ac85fe9c1

  • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\licenseemu.exe.log

    Filesize

    617B

    MD5

    47504b42411e2c23666d08795adae488

    SHA1

    92ba780125e2fcedc6223478504aa501adf95c06

    SHA256

    4b2747d4a45ae359c415f11d2a2d9e09e6a036aad39b40e284850603b64bbc98

    SHA512

    a2d33cb21ec121b9f857c81df3992da216859f5df69cc8da9edbd91eeb21f45b7ac79459d0c6bc08f09bc33684dfff62a20feddd13d5367ad717095ac85fe9c1

  • C:\Users\Admin\AppData\Roaming\ tofu\licenseemu.exe

    Filesize

    125KB

    MD5

    cdcb8d03e87665854688fc9988bf4345

    SHA1

    d749dfbf1418a8628382f9a808854eb1b36c83d0

    SHA256

    0c0f27f2c4435b5bcf675c56d2d716c6364435d5f2415db8e291326c14da2f9e

    SHA512

    6a60dbe438c55bfa99c5b4c7f9ed484d6fbc55f325551d0547355f8bb500df6025c8b4e32187f1f321fa13cce4685167f037763c9a93f92f498ddbe91b916619

  • C:\Users\Admin\AppData\Roaming\ tofu\licenseemu.exe

    Filesize

    125KB

    MD5

    cdcb8d03e87665854688fc9988bf4345

    SHA1

    d749dfbf1418a8628382f9a808854eb1b36c83d0

    SHA256

    0c0f27f2c4435b5bcf675c56d2d716c6364435d5f2415db8e291326c14da2f9e

    SHA512

    6a60dbe438c55bfa99c5b4c7f9ed484d6fbc55f325551d0547355f8bb500df6025c8b4e32187f1f321fa13cce4685167f037763c9a93f92f498ddbe91b916619

  • C:\Users\Admin\AppData\Roaming\ tofu\licenseemu.exe

    Filesize

    125KB

    MD5

    cdcb8d03e87665854688fc9988bf4345

    SHA1

    d749dfbf1418a8628382f9a808854eb1b36c83d0

    SHA256

    0c0f27f2c4435b5bcf675c56d2d716c6364435d5f2415db8e291326c14da2f9e

    SHA512

    6a60dbe438c55bfa99c5b4c7f9ed484d6fbc55f325551d0547355f8bb500df6025c8b4e32187f1f321fa13cce4685167f037763c9a93f92f498ddbe91b916619

  • memory/836-137-0x0000000000000000-mapping.dmp

  • memory/2024-136-0x00000000050D0000-0x0000000005136000-memory.dmp

    Filesize

    408KB

  • memory/2024-134-0x0000000000400000-0x000000000040A000-memory.dmp

    Filesize

    40KB

  • memory/2024-133-0x0000000000000000-mapping.dmp

  • memory/2516-138-0x0000000000000000-mapping.dmp

  • memory/3220-141-0x0000000000000000-mapping.dmp

  • memory/3764-130-0x00000000003E0000-0x0000000000408000-memory.dmp

    Filesize

    160KB

  • memory/3764-132-0x00000000055B0000-0x0000000005B54000-memory.dmp

    Filesize

    5.6MB

  • memory/3764-131-0x0000000004E40000-0x0000000004EDC000-memory.dmp

    Filesize

    624KB