Analysis

  • max time kernel
    150s
  • max time network
    128s
  • platform
    windows7_x64
  • resource
    win7-20230712-en
  • resource tags

    arch:x64arch:x86image:win7-20230712-enlocale:en-usos:windows7-x64system
  • submitted
    19-07-2023 22:34

General

  • Target

    7bec74560ef5bbe652f3630ffb333b7b.exe

  • Size

    1.6MB

  • MD5

    7bec74560ef5bbe652f3630ffb333b7b

  • SHA1

    75985bc0077841d1be4369cdc2715662e6266811

  • SHA256

    d1e23942effbdf831fb99ceb19495a5338fbcf2872a6782c58b184b4b2b33c4d

  • SHA512

    22871bc2ef5100690bb356b9c30d9380b19934cf708c3d48727d60c8476147f1838af701b1dddb675d5330aac306501fc68642c5e6beaa97f57ff50ce529d526

  • SSDEEP

    6144:r66IzOEQkI6VRkdzlaWt56cPziyrBC4AaibAL69:rbIzOEQkj8laWthvr84PXu9

Score
10/10

Malware Config

Extracted

Family

limerat

Attributes
  • aes_key

    nyancat

  • antivm

    false

  • c2_url

    https://pastebin.com/raw/upsAbbQq

  • delay

    3

  • download_payload

    false

  • install

    true

  • install_name

    File.exe

  • main_folder

    AppData

  • pin_spread

    false

  • sub_folder

    \System\

  • usb_spread

    false

Signatures

  • LimeRAT

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

  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 2 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.

  • Modifies system certificate store 2 TTPs 2 IoCs
  • Suspicious behavior: EnumeratesProcesses 23 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 8 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\7bec74560ef5bbe652f3630ffb333b7b.exe
    "C:\Users\Admin\AppData\Local\Temp\7bec74560ef5bbe652f3630ffb333b7b.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of WriteProcessMemory
    PID:2800
    • C:\Windows\SysWOW64\schtasks.exe
      schtasks /create /f /sc ONLOGON /RL HIGHEST /tn LimeRAT-Admin /tr "'C:\Users\Admin\AppData\Roaming\System\File.exe'"
      2⤵
      • Creates scheduled task(s)
      PID:2844
    • C:\Users\Admin\AppData\Roaming\System\File.exe
      "C:\Users\Admin\AppData\Roaming\System\File.exe"
      2⤵
      • Executes dropped EXE
      • Modifies system certificate store
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2152

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Roaming\System\File.exe

    Filesize

    1.6MB

    MD5

    7bec74560ef5bbe652f3630ffb333b7b

    SHA1

    75985bc0077841d1be4369cdc2715662e6266811

    SHA256

    d1e23942effbdf831fb99ceb19495a5338fbcf2872a6782c58b184b4b2b33c4d

    SHA512

    22871bc2ef5100690bb356b9c30d9380b19934cf708c3d48727d60c8476147f1838af701b1dddb675d5330aac306501fc68642c5e6beaa97f57ff50ce529d526

  • C:\Users\Admin\AppData\Roaming\System\File.exe

    Filesize

    1.6MB

    MD5

    7bec74560ef5bbe652f3630ffb333b7b

    SHA1

    75985bc0077841d1be4369cdc2715662e6266811

    SHA256

    d1e23942effbdf831fb99ceb19495a5338fbcf2872a6782c58b184b4b2b33c4d

    SHA512

    22871bc2ef5100690bb356b9c30d9380b19934cf708c3d48727d60c8476147f1838af701b1dddb675d5330aac306501fc68642c5e6beaa97f57ff50ce529d526

  • C:\Users\Admin\AppData\Roaming\System\File.exe

    Filesize

    1.6MB

    MD5

    7bec74560ef5bbe652f3630ffb333b7b

    SHA1

    75985bc0077841d1be4369cdc2715662e6266811

    SHA256

    d1e23942effbdf831fb99ceb19495a5338fbcf2872a6782c58b184b4b2b33c4d

    SHA512

    22871bc2ef5100690bb356b9c30d9380b19934cf708c3d48727d60c8476147f1838af701b1dddb675d5330aac306501fc68642c5e6beaa97f57ff50ce529d526

  • \Users\Admin\AppData\Roaming\System\File.exe

    Filesize

    1.6MB

    MD5

    7bec74560ef5bbe652f3630ffb333b7b

    SHA1

    75985bc0077841d1be4369cdc2715662e6266811

    SHA256

    d1e23942effbdf831fb99ceb19495a5338fbcf2872a6782c58b184b4b2b33c4d

    SHA512

    22871bc2ef5100690bb356b9c30d9380b19934cf708c3d48727d60c8476147f1838af701b1dddb675d5330aac306501fc68642c5e6beaa97f57ff50ce529d526

  • \Users\Admin\AppData\Roaming\System\File.exe

    Filesize

    1.6MB

    MD5

    7bec74560ef5bbe652f3630ffb333b7b

    SHA1

    75985bc0077841d1be4369cdc2715662e6266811

    SHA256

    d1e23942effbdf831fb99ceb19495a5338fbcf2872a6782c58b184b4b2b33c4d

    SHA512

    22871bc2ef5100690bb356b9c30d9380b19934cf708c3d48727d60c8476147f1838af701b1dddb675d5330aac306501fc68642c5e6beaa97f57ff50ce529d526

  • memory/2152-68-0x0000000074A20000-0x000000007510E000-memory.dmp

    Filesize

    6.9MB

  • memory/2152-69-0x00000000010F0000-0x000000000128E000-memory.dmp

    Filesize

    1.6MB

  • memory/2152-70-0x0000000000FF0000-0x0000000001030000-memory.dmp

    Filesize

    256KB

  • memory/2152-71-0x0000000074A20000-0x000000007510E000-memory.dmp

    Filesize

    6.9MB

  • memory/2800-57-0x0000000004ED0000-0x0000000004F10000-memory.dmp

    Filesize

    256KB

  • memory/2800-54-0x0000000000C10000-0x0000000000DAE000-memory.dmp

    Filesize

    1.6MB

  • memory/2800-67-0x0000000074A20000-0x000000007510E000-memory.dmp

    Filesize

    6.9MB

  • memory/2800-55-0x0000000074A20000-0x000000007510E000-memory.dmp

    Filesize

    6.9MB