Overview

overview

10

Static

static

10

8320F61719...4E.exe

windows7_x64

10

8320F61719...4E.exe

windows10_x64

10

Analysis

  • max time kernel
    149s
  • max time network
    133s
  • platform
    windows7_x64
  • resource
    win7-en-20210920
  • submitted
    01-10-2021 12:58

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General

  • Target

    8320F6171990184F84338329DAE465E33EF90E1A9584E.exe

  • Size

    23KB

  • MD5

    a873745adb5279248a7ea3cccff26c3c

  • SHA1

    551fb96900684f790fca3b2b837d1c88ef0508dc

  • SHA256

    8320f6171990184f84338329dae465e33ef90e1a9584e7087b226d682b8e1594

  • SHA512

    09d94e876577cd9c1ae164bb6bfa94fc440482f2fc5e775b6d7222508ad4ef53697f2164044b30789d7a2cf4f703a98d4958968c7cd774811a89a2188310b87f

Score
10/10
njratlammerevasionpersistencetrojan

Malware Config

Extracted

Family

njrat

Version

0.7d

Botnet

Lammer

C2

6.tcp.ngrok.io:16860

Mutex

142514b06c5331e576c2b748ba1ec681

Attributes
  • reg_key

    142514b06c5331e576c2b748ba1ec681

  • splitter

    |'|'|

Signatures

  • njRAT/Bladabindi

    Widely used RAT written in .NET.

    trojannjrat
  • Executes dropped EXE 1 IoCs
  • Modifies Windows Firewall 1 TTPs
    evasion
  • Drops startup file 2 IoCs
  • Loads dropped DLL 1 IoCs
  • Adds Run key to start application 2 TTPs 2 IoCs
    persistence
  • 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\8320F6171990184F84338329DAE465E33EF90E1A9584E.exe
    "C:\Users\Admin\AppData\Local\Temp\8320F6171990184F84338329DAE465E33EF90E1A9584E.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of WriteProcessMemory
    PID:2024
    • C:\Users\Admin\AppData\Roaming\Server.exe
      "C:\Users\Admin\AppData\Roaming\Server.exe"
      2⤵
      • Executes dropped EXE
      • Drops startup file
      • Adds Run key to start application
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:2020
      • C:\Windows\SysWOW64\netsh.exe
        netsh firewall add allowedprogram "C:\Users\Admin\AppData\Roaming\Server.exe" "Server.exe" ENABLE
        3⤵
          PID:1420

    Network

    MITRE ATT&CK Matrix ATT&CK v6

    Initial Access

    Execution

    Persistence

    Modify Existing Service

    1
    T1031

    Registry Run Keys / Startup Folder

    1
    T1060

    Privilege Escalation

    Defense Evasion

    Modify Registry

    1
    T1112

    Credential Access

    Discovery

    System Information Discovery

    1
    T1082

    Lateral Movement

    Collection

    Exfiltration

    Command and Control

    Impact

    Replay Monitor

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    Downloads

    • C:\Users\Admin\AppData\Roaming\Server.exe
      MD5

      a873745adb5279248a7ea3cccff26c3c

      SHA1

      551fb96900684f790fca3b2b837d1c88ef0508dc

      SHA256

      8320f6171990184f84338329dae465e33ef90e1a9584e7087b226d682b8e1594

      SHA512

      09d94e876577cd9c1ae164bb6bfa94fc440482f2fc5e775b6d7222508ad4ef53697f2164044b30789d7a2cf4f703a98d4958968c7cd774811a89a2188310b87f

      Download Submit
    • C:\Users\Admin\AppData\Roaming\Server.exe
      MD5

      a873745adb5279248a7ea3cccff26c3c

      SHA1

      551fb96900684f790fca3b2b837d1c88ef0508dc

      SHA256

      8320f6171990184f84338329dae465e33ef90e1a9584e7087b226d682b8e1594

      SHA512

      09d94e876577cd9c1ae164bb6bfa94fc440482f2fc5e775b6d7222508ad4ef53697f2164044b30789d7a2cf4f703a98d4958968c7cd774811a89a2188310b87f

      Download Submit
    • \Users\Admin\AppData\Roaming\Server.exe
      MD5

      a873745adb5279248a7ea3cccff26c3c

      SHA1

      551fb96900684f790fca3b2b837d1c88ef0508dc

      SHA256

      8320f6171990184f84338329dae465e33ef90e1a9584e7087b226d682b8e1594

      SHA512

      09d94e876577cd9c1ae164bb6bfa94fc440482f2fc5e775b6d7222508ad4ef53697f2164044b30789d7a2cf4f703a98d4958968c7cd774811a89a2188310b87f

      Download Submit
    • memory/1420-61-0x0000000000000000-mapping.dmp
      Download
    • memory/2020-56-0x0000000000000000-mapping.dmp
      Download
    • memory/2020-60-0x0000000001DD0000-0x0000000001DD1000-memory.dmp
      Filesize

      4KB

      Download
    • memory/2024-53-0x0000000075821000-0x0000000075823000-memory.dmp
      Filesize

      8KB

      Download
    • memory/2024-54-0x0000000002280000-0x0000000002281000-memory.dmp
      Filesize

      4KB

      Download