Analysis

  • max time kernel
    149s
  • max time network
    136s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    27-09-2022 00:22

General

  • Target

    083cf2b8153b97fe12cff304215ec8ac.exe

  • Size

    37KB

  • MD5

    083cf2b8153b97fe12cff304215ec8ac

  • SHA1

    5dc5d20ef9b4b13debbf0db1a4930f14990afa4a

  • SHA256

    eb0c3c93ac49a1c20a42fa82c5f1f81c1df01d05a0670342ea974b7d79308856

  • SHA512

    7bf10e9be2ada50a96cf5d2bd5d907f4521b177913e8759d96c16443c31e69cc752d9fb5e1b265048c311ef9a9e8b810b89ff92710a6a5af4710a40607cfa450

  • SSDEEP

    384:mu+vEiTbZvpWNcZ0y8f1CRDX5CLk6SgprAF+rMRTyN/0L+EcoinblneHQM3epzXI:T+dTZ38f1CRDcNSIrM+rMRa8Nu1Et

Malware Config

Extracted

Family

njrat

Version

im523

Botnet

HacKed

C2

lynnnaz.ddns.net:1703

Mutex

258c2f365319c9fd509866032c7dc587

Attributes
  • reg_key

    258c2f365319c9fd509866032c7dc587

  • splitter

    |'|'|

Signatures

  • njRAT/Bladabindi

    Widely used RAT written in .NET.

  • Executes dropped EXE 1 IoCs
  • Modifies Windows Firewall 1 TTPs 1 IoCs
  • Drops startup file 2 IoCs
  • Loads dropped DLL 1 IoCs
  • Adds Run key to start application 2 TTPs 2 IoCs
  • Drops autorun.inf file 1 TTPs 3 IoCs

    Malware can abuse Windows Autorun to spread further via attached volumes.

  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious use of AdjustPrivilegeToken 19 IoCs
  • Suspicious use of WriteProcessMemory 8 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\083cf2b8153b97fe12cff304215ec8ac.exe
    "C:\Users\Admin\AppData\Local\Temp\083cf2b8153b97fe12cff304215ec8ac.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of WriteProcessMemory
    PID:1444
    • C:\Users\Admin\AppData\Local\Temp\WH_cheat.exe
      "C:\Users\Admin\AppData\Local\Temp\WH_cheat.exe"
      2⤵
      • Executes dropped EXE
      • Drops startup file
      • Adds Run key to start application
      • Drops autorun.inf file
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:2040
      • C:\Windows\SysWOW64\netsh.exe
        netsh firewall add allowedprogram "C:\Users\Admin\AppData\Local\Temp\WH_cheat.exe" "WH_cheat.exe" ENABLE
        3⤵
        • Modifies Windows Firewall
        PID:2024

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Replication Through Removable Media

1
T1091

Persistence

Modify Existing Service

1
T1031

Registry Run Keys / Startup Folder

1
T1060

Defense Evasion

Modify Registry

1
T1112

Discovery

System Information Discovery

1
T1082

Lateral Movement

Replication Through Removable Media

1
T1091

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Temp\WH_cheat.exe
    Filesize

    37KB

    MD5

    083cf2b8153b97fe12cff304215ec8ac

    SHA1

    5dc5d20ef9b4b13debbf0db1a4930f14990afa4a

    SHA256

    eb0c3c93ac49a1c20a42fa82c5f1f81c1df01d05a0670342ea974b7d79308856

    SHA512

    7bf10e9be2ada50a96cf5d2bd5d907f4521b177913e8759d96c16443c31e69cc752d9fb5e1b265048c311ef9a9e8b810b89ff92710a6a5af4710a40607cfa450

  • C:\Users\Admin\AppData\Local\Temp\WH_cheat.exe
    Filesize

    37KB

    MD5

    083cf2b8153b97fe12cff304215ec8ac

    SHA1

    5dc5d20ef9b4b13debbf0db1a4930f14990afa4a

    SHA256

    eb0c3c93ac49a1c20a42fa82c5f1f81c1df01d05a0670342ea974b7d79308856

    SHA512

    7bf10e9be2ada50a96cf5d2bd5d907f4521b177913e8759d96c16443c31e69cc752d9fb5e1b265048c311ef9a9e8b810b89ff92710a6a5af4710a40607cfa450

  • \Users\Admin\AppData\Local\Temp\WH_cheat.exe
    Filesize

    37KB

    MD5

    083cf2b8153b97fe12cff304215ec8ac

    SHA1

    5dc5d20ef9b4b13debbf0db1a4930f14990afa4a

    SHA256

    eb0c3c93ac49a1c20a42fa82c5f1f81c1df01d05a0670342ea974b7d79308856

    SHA512

    7bf10e9be2ada50a96cf5d2bd5d907f4521b177913e8759d96c16443c31e69cc752d9fb5e1b265048c311ef9a9e8b810b89ff92710a6a5af4710a40607cfa450

  • memory/1444-54-0x0000000075ED1000-0x0000000075ED3000-memory.dmp
    Filesize

    8KB

  • memory/1444-55-0x0000000074DC0000-0x000000007536B000-memory.dmp
    Filesize

    5.7MB

  • memory/1444-61-0x0000000074DC0000-0x000000007536B000-memory.dmp
    Filesize

    5.7MB

  • memory/2024-63-0x0000000000000000-mapping.dmp
  • memory/2040-57-0x0000000000000000-mapping.dmp
  • memory/2040-62-0x0000000074DC0000-0x000000007536B000-memory.dmp
    Filesize

    5.7MB

  • memory/2040-65-0x0000000074DC0000-0x000000007536B000-memory.dmp
    Filesize

    5.7MB