Analysis

  • max time kernel
    150s
  • max time network
    150s
  • platform
    windows7_x64
  • resource
    win7-en-20211208
  • submitted
    22-12-2021 20:12

General

  • Target

    1B5623A3835CD779D255C177B644FB731F093FC60C8E7.exe

  • Size

    27KB

  • MD5

    17342737aa4da913d168e0c7a8f97737

  • SHA1

    92a62d7222236de3c089a1efa103dae56a56abd5

  • SHA256

    1b5623a3835cd779d255c177b644fb731f093fc60c8e73e7fd57e2330e85c214

  • SHA512

    eb46a1bef25797a0ebf035708e5654c2a6b6638d6399926144fc22b6b7e2d628b9ea8b7f381546e2e7ec15ac57901316613a6ca05d60033c9465a3e2bf9ab991

Malware Config

Extracted

Family

njrat

Version

v2.0

Botnet

HacKed

C2

2.tcp.ngrok.io:10434

Mutex

Windows

Attributes
  • reg_key

    Windows

  • splitter

    |-F-|

Signatures

  • njRAT/Bladabindi

    Widely used RAT written in .NET.

  • suricata: ET MALWARE Generic njRAT/Bladabindi CnC Activity (ll)

    suricata: ET MALWARE Generic njRAT/Bladabindi CnC Activity (ll)

  • Executes dropped EXE 1 IoCs
  • Drops startup file 4 IoCs
  • Loads dropped DLL 1 IoCs
  • Adds Run key to start application 2 TTPs 5 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious use of AdjustPrivilegeToken 33 IoCs
  • Suspicious use of WriteProcessMemory 8 IoCs
  • Views/modifies file attributes 1 TTPs 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\1B5623A3835CD779D255C177B644FB731F093FC60C8E7.exe
    "C:\Users\Admin\AppData\Local\Temp\1B5623A3835CD779D255C177B644FB731F093FC60C8E7.exe"
    1⤵
    • Drops startup file
    • Loads dropped DLL
    • Adds Run key to start application
    • Suspicious use of WriteProcessMemory
    PID:1128
    • C:\Users\Admin\AppData\Roaming\Payload.exe
      "C:\Users\Admin\AppData\Roaming\Payload.exe"
      2⤵
      • Executes dropped EXE
      • Drops startup file
      • Adds Run key to start application
      • Suspicious use of AdjustPrivilegeToken
      PID:432
    • C:\Windows\SysWOW64\attrib.exe
      attrib +h +r +s "C:\Users\Admin\AppData\Roaming\Payload.exe"
      2⤵
      • Views/modifies file attributes
      PID:1388

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Windows.lnk

    MD5

    74e0513f71ef18aae509f7751f25f453

    SHA1

    aba9ff8944c79d81c9f38337722c89a733712b4b

    SHA256

    a46f531044be1b29ac6346aa39fd048b19e8c799de2484d9978ee79cc96c8e8b

    SHA512

    a8b47c292d7be35d560787c39978ad54ff7f7bd273a9db550b9795fc8a5666244397fa6e0f2888dcc4811550090acee479d0176e01965bea80598f10e971abd0

  • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\Windows.lnk

    MD5

    ce86a5f1ef5c036da720d8cba98512e7

    SHA1

    530e6d5ae5b1ec43fa9c337afa18f34c49681558

    SHA256

    2250c04d4c5b334c97fe69ba67021d1131e73746f96d9939745d7714472cce6d

    SHA512

    57b300c44f312c6d9e13c56e24ebdb89398458256af18e3a2aa090d84e2d922ad86e2980d5c91015ca7255749d6be3cc042fb41f76a75f383cdffc83528583e9

  • C:\Users\Admin\AppData\Roaming\Payload.exe

    MD5

    17342737aa4da913d168e0c7a8f97737

    SHA1

    92a62d7222236de3c089a1efa103dae56a56abd5

    SHA256

    1b5623a3835cd779d255c177b644fb731f093fc60c8e73e7fd57e2330e85c214

    SHA512

    eb46a1bef25797a0ebf035708e5654c2a6b6638d6399926144fc22b6b7e2d628b9ea8b7f381546e2e7ec15ac57901316613a6ca05d60033c9465a3e2bf9ab991

  • C:\Users\Admin\AppData\Roaming\Payload.exe

    MD5

    17342737aa4da913d168e0c7a8f97737

    SHA1

    92a62d7222236de3c089a1efa103dae56a56abd5

    SHA256

    1b5623a3835cd779d255c177b644fb731f093fc60c8e73e7fd57e2330e85c214

    SHA512

    eb46a1bef25797a0ebf035708e5654c2a6b6638d6399926144fc22b6b7e2d628b9ea8b7f381546e2e7ec15ac57901316613a6ca05d60033c9465a3e2bf9ab991

  • \Users\Admin\AppData\Roaming\Payload.exe

    MD5

    17342737aa4da913d168e0c7a8f97737

    SHA1

    92a62d7222236de3c089a1efa103dae56a56abd5

    SHA256

    1b5623a3835cd779d255c177b644fb731f093fc60c8e73e7fd57e2330e85c214

    SHA512

    eb46a1bef25797a0ebf035708e5654c2a6b6638d6399926144fc22b6b7e2d628b9ea8b7f381546e2e7ec15ac57901316613a6ca05d60033c9465a3e2bf9ab991

  • memory/432-56-0x0000000000000000-mapping.dmp

  • memory/432-63-0x00000000001D0000-0x00000000001D1000-memory.dmp

    Filesize

    4KB

  • memory/1128-53-0x0000000075891000-0x0000000075893000-memory.dmp

    Filesize

    8KB

  • memory/1128-54-0x0000000000320000-0x0000000000321000-memory.dmp

    Filesize

    4KB

  • memory/1388-58-0x0000000000000000-mapping.dmp