Analysis

  • max time kernel
    150s
  • max time network
    155s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20230915-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20230915-enlocale:en-usos:windows10-2004-x64system
  • submitted
    30-09-2023 01:48

General

  • Target

    cdfc36ba42665419295b0c68dde39430.exe

  • Size

    25KB

  • MD5

    cdfc36ba42665419295b0c68dde39430

  • SHA1

    6b577e002d35133a846ef05fe03b5b250c37e8d4

  • SHA256

    f55871df9e8ca3a99a34e3b3345fed1daaf371f77b7c0a668a5f34b60fc0ce35

  • SHA512

    6f25cce90d2a0e3bc97db1c8b090c0c6602eb6393c8096ae1774bc1d8bf02e380ed72690917a2eea25f8cdcd5b41ca7d0939720deffec4ef935609d44de01454

  • SSDEEP

    384:CB+Sbj6NKwSs6/DAH92Xyh34EnWb5j4kDhlzCTJEUmNYEYQro3lch1Fnsjr:4pwP6/Dw9FaE+RHtN8i1ej

Score
10/10

Malware Config

Extracted

Family

limerat

Attributes
  • aes_key

    adlan

  • antivm

    false

  • c2_url

    https://pastebin.com/raw/EsJXyyQv

  • delay

    3

  • download_payload

    false

  • install

    true

  • install_name

    Svchost.exe

  • main_folder

    AppData

  • pin_spread

    true

  • sub_folder

    \Schost\

  • usb_spread

    true

Extracted

Family

limerat

Attributes
  • antivm

    false

  • c2_url

    https://pastebin.com/raw/EsJXyyQv

  • 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\cdfc36ba42665419295b0c68dde39430.exe
    "C:\Users\Admin\AppData\Local\Temp\cdfc36ba42665419295b0c68dde39430.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:4988
    • C:\Windows\SysWOW64\schtasks.exe
      schtasks /create /f /sc ONLOGON /RL HIGHEST /tn LimeRAT-Admin /tr "'C:\Users\Admin\AppData\Roaming\Schost\Svchost.exe'"
      2⤵
      • Creates scheduled task(s)
      PID:4188
    • C:\Users\Admin\AppData\Roaming\Schost\Svchost.exe
      "C:\Users\Admin\AppData\Roaming\Schost\Svchost.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious use of AdjustPrivilegeToken
      PID:4768

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Roaming\Schost\Svchost.exe

    Filesize

    25KB

    MD5

    cdfc36ba42665419295b0c68dde39430

    SHA1

    6b577e002d35133a846ef05fe03b5b250c37e8d4

    SHA256

    f55871df9e8ca3a99a34e3b3345fed1daaf371f77b7c0a668a5f34b60fc0ce35

    SHA512

    6f25cce90d2a0e3bc97db1c8b090c0c6602eb6393c8096ae1774bc1d8bf02e380ed72690917a2eea25f8cdcd5b41ca7d0939720deffec4ef935609d44de01454

  • C:\Users\Admin\AppData\Roaming\Schost\Svchost.exe

    Filesize

    25KB

    MD5

    cdfc36ba42665419295b0c68dde39430

    SHA1

    6b577e002d35133a846ef05fe03b5b250c37e8d4

    SHA256

    f55871df9e8ca3a99a34e3b3345fed1daaf371f77b7c0a668a5f34b60fc0ce35

    SHA512

    6f25cce90d2a0e3bc97db1c8b090c0c6602eb6393c8096ae1774bc1d8bf02e380ed72690917a2eea25f8cdcd5b41ca7d0939720deffec4ef935609d44de01454

  • C:\Users\Admin\AppData\Roaming\Schost\Svchost.exe

    Filesize

    25KB

    MD5

    cdfc36ba42665419295b0c68dde39430

    SHA1

    6b577e002d35133a846ef05fe03b5b250c37e8d4

    SHA256

    f55871df9e8ca3a99a34e3b3345fed1daaf371f77b7c0a668a5f34b60fc0ce35

    SHA512

    6f25cce90d2a0e3bc97db1c8b090c0c6602eb6393c8096ae1774bc1d8bf02e380ed72690917a2eea25f8cdcd5b41ca7d0939720deffec4ef935609d44de01454

  • memory/4768-15-0x0000000074CE0000-0x0000000075490000-memory.dmp

    Filesize

    7.7MB

  • memory/4768-17-0x0000000074CE0000-0x0000000075490000-memory.dmp

    Filesize

    7.7MB

  • memory/4988-0-0x0000000074CE0000-0x0000000075490000-memory.dmp

    Filesize

    7.7MB

  • memory/4988-1-0x0000000000ED0000-0x0000000000EDC000-memory.dmp

    Filesize

    48KB

  • memory/4988-2-0x0000000005870000-0x000000000590C000-memory.dmp

    Filesize

    624KB

  • memory/4988-3-0x0000000005910000-0x0000000005976000-memory.dmp

    Filesize

    408KB

  • memory/4988-4-0x00000000057F0000-0x0000000005800000-memory.dmp

    Filesize

    64KB

  • memory/4988-5-0x0000000006560000-0x0000000006B04000-memory.dmp

    Filesize

    5.6MB

  • memory/4988-16-0x0000000074CE0000-0x0000000075490000-memory.dmp

    Filesize

    7.7MB