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Analysis

  • max time kernel
    146s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231215-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
  • submitted
    19/12/2023, 21:48

General

  • Target

    ab9cdcc91e38013c926be73428f7d03b.exe

  • Size

    97KB

  • MD5

    ab9cdcc91e38013c926be73428f7d03b

  • SHA1

    d2e5d604eec7b39aa844930264c13109f425e9f1

  • SHA256

    e19090ef03d3b2617e1409f23fc768d590f31859e53d9f60baa6d9109ecac6b3

  • SHA512

    ac46ae3320074ad34b01ef96787199c9be88bcffc90d9da14dc5104026c2356851a4b6ecde90ae5eea8037a46476862f44ead0c4f0a0c3691c760dcf836d5074

  • SSDEEP

    1536:uZC69+uI2AwnGWPp6WnriJ460TBkfFBNRkb+9VpaPbMMkpSJwT1hFyX:uG2AWGC6aA0TBkNB3S+9VLZSJI1hFC

Score
10/10

Malware Config

Extracted

Family

limerat

Attributes
  • antivm

    false

  • c2_url

    https://pastebin.com/raw/NzAFK8As

  • download_payload

    false

  • install

    false

  • pin_spread

    false

  • usb_spread

    false

Signatures

  • LimeRAT

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

  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Executes dropped EXE 1 IoCs
  • 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).

  • 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\ab9cdcc91e38013c926be73428f7d03b.exe
    "C:\Users\Admin\AppData\Local\Temp\ab9cdcc91e38013c926be73428f7d03b.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:4248
    • C:\Windows\SysWOW64\schtasks.exe
      schtasks /create /f /sc ONLOGON /RL HIGHEST /tn LimeRAT-Admin /tr "'C:\Users\Admin\Sys\WindowsServices.exe'"
      2⤵
      • Creates scheduled task(s)
      PID:3252
    • C:\Users\Admin\Sys\WindowsServices.exe
      "C:\Users\Admin\Sys\WindowsServices.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious use of AdjustPrivilegeToken
      PID:4848

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\Sys\WindowsServices.exe

    Filesize

    97KB

    MD5

    ab9cdcc91e38013c926be73428f7d03b

    SHA1

    d2e5d604eec7b39aa844930264c13109f425e9f1

    SHA256

    e19090ef03d3b2617e1409f23fc768d590f31859e53d9f60baa6d9109ecac6b3

    SHA512

    ac46ae3320074ad34b01ef96787199c9be88bcffc90d9da14dc5104026c2356851a4b6ecde90ae5eea8037a46476862f44ead0c4f0a0c3691c760dcf836d5074

  • memory/4248-1-0x0000000074640000-0x0000000074DF0000-memory.dmp

    Filesize

    7.7MB

  • memory/4248-0-0x0000000000B50000-0x0000000000B6E000-memory.dmp

    Filesize

    120KB

  • memory/4248-2-0x0000000005580000-0x0000000005590000-memory.dmp

    Filesize

    64KB

  • memory/4248-3-0x0000000005440000-0x0000000005446000-memory.dmp

    Filesize

    24KB

  • memory/4248-4-0x0000000005840000-0x00000000058DC000-memory.dmp

    Filesize

    624KB

  • memory/4248-5-0x0000000005590000-0x00000000055F6000-memory.dmp

    Filesize

    408KB

  • memory/4248-6-0x0000000006490000-0x0000000006A34000-memory.dmp

    Filesize

    5.6MB

  • memory/4248-16-0x0000000074640000-0x0000000074DF0000-memory.dmp

    Filesize

    7.7MB

  • memory/4848-18-0x0000000004FA0000-0x0000000004FB0000-memory.dmp

    Filesize

    64KB

  • memory/4848-17-0x0000000074640000-0x0000000074DF0000-memory.dmp

    Filesize

    7.7MB

  • memory/4848-19-0x0000000074640000-0x0000000074DF0000-memory.dmp

    Filesize

    7.7MB