Analysis

  • max time kernel
    149s
  • max time network
    151s
  • platform
    windows7_x64
  • resource
    win7-en-20210920
  • submitted
    04-10-2021 12:16

General

  • Target

    a7ffebe2d929cb30d09a5f97bf04bf4d.exe

  • Size

    37KB

  • MD5

    a7ffebe2d929cb30d09a5f97bf04bf4d

  • SHA1

    0973fa934cbac60167827c6131330f5c1455b6c2

  • SHA256

    6d8714bcd12dc506609b53ee525e2ee435e154c3c4b1087c8285f3fd2e678dcd

  • SHA512

    18ce4fa53d4dbce473c488260eeb641e8967cea99bbac480589ff4289b995f168a2b882a41c3e68f860e8e1a2b8d96bd850826895699fbf7966a4f97882661e2

Malware Config

Extracted

Family

njrat

Version

im523

Botnet

HacKed

C2

8.tcp.ngrok.io:18888

Mutex

0b353c48530e21bc19ab5b01d126c6b8

Attributes
  • reg_key

    0b353c48530e21bc19ab5b01d126c6b8

  • splitter

    |'|'|

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
  • Modifies Windows Firewall 1 TTPs
  • Adds Run key to start application 2 TTPs 2 IoCs
  • Drops file in Windows directory 3 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious use of AdjustPrivilegeToken 35 IoCs
  • Suspicious use of WriteProcessMemory 8 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\a7ffebe2d929cb30d09a5f97bf04bf4d.exe
    "C:\Users\Admin\AppData\Local\Temp\a7ffebe2d929cb30d09a5f97bf04bf4d.exe"
    1⤵
    • Drops file in Windows directory
    • Suspicious use of WriteProcessMemory
    PID:2004
    • C:\Windows\Yougoofynigga.exe
      "C:\Windows\Yougoofynigga.exe"
      2⤵
      • Executes dropped EXE
      • Adds Run key to start application
      • Drops file in Windows directory
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:1164
      • C:\Windows\SysWOW64\netsh.exe
        netsh firewall add allowedprogram "C:\Windows\Yougoofynigga.exe" "Yougoofynigga.exe" ENABLE
        3⤵
          PID:1556

    Network

    MITRE ATT&CK Enterprise v6

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Windows\Yougoofynigga.exe

      MD5

      a7ffebe2d929cb30d09a5f97bf04bf4d

      SHA1

      0973fa934cbac60167827c6131330f5c1455b6c2

      SHA256

      6d8714bcd12dc506609b53ee525e2ee435e154c3c4b1087c8285f3fd2e678dcd

      SHA512

      18ce4fa53d4dbce473c488260eeb641e8967cea99bbac480589ff4289b995f168a2b882a41c3e68f860e8e1a2b8d96bd850826895699fbf7966a4f97882661e2

    • C:\Windows\Yougoofynigga.exe

      MD5

      a7ffebe2d929cb30d09a5f97bf04bf4d

      SHA1

      0973fa934cbac60167827c6131330f5c1455b6c2

      SHA256

      6d8714bcd12dc506609b53ee525e2ee435e154c3c4b1087c8285f3fd2e678dcd

      SHA512

      18ce4fa53d4dbce473c488260eeb641e8967cea99bbac480589ff4289b995f168a2b882a41c3e68f860e8e1a2b8d96bd850826895699fbf7966a4f97882661e2

    • memory/1164-56-0x0000000000000000-mapping.dmp

    • memory/1164-60-0x0000000000970000-0x0000000000971000-memory.dmp

      Filesize

      4KB

    • memory/1556-61-0x0000000000000000-mapping.dmp

    • memory/2004-54-0x0000000076581000-0x0000000076583000-memory.dmp

      Filesize

      8KB

    • memory/2004-55-0x0000000000640000-0x0000000000641000-memory.dmp

      Filesize

      4KB