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Analysis

  • max time kernel
    149s
  • max time network
    149s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231215-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
  • submitted
    21/01/2024, 11:22

General

  • Target

    6d2dd997fba6f32224da79bffe045408.exe

  • Size

    43KB

  • MD5

    6d2dd997fba6f32224da79bffe045408

  • SHA1

    bb1e4b50edac6717d8c750a40532eb31a2560a41

  • SHA256

    59957e041167865b2bd399f65f382246b60837905dca819cb736b50f66f59c7e

  • SHA512

    b4e9925b668fab559fd436350855f8fa6ca613e2a2271312f70b0790c71233a09542d54afd3aa504e65ee908a64ccd4b4dcd74047b04a09ee66f11561358169b

  • SSDEEP

    384:AZypJE1STss7yKSDzAS+qE1LpS2FzsIij+ZsNO3PlpJKkkjh/TzF7pWn50reT0pe:mu2k4smKSPAhrLkguXQ/oE+L

Malware Config

Extracted

Family

njrat

Version

Njrat 0.7 Golden By Hassan Amiri

Botnet

HacKed

C2

127.0.0.1:5552

Mutex

Windows Update

Attributes
  • reg_key

    Windows Update

  • splitter

    |Hassan|

Signatures

  • njRAT/Bladabindi

    Widely used RAT written in .NET.

  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Drops startup file 2 IoCs
  • Executes dropped EXE 4 IoCs
  • Adds Run key to start application 2 TTPs 2 IoCs
  • 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.

  • Suspicious behavior: GetForegroundWindowSpam 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 33 IoCs
  • Suspicious use of WriteProcessMemory 6 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\6d2dd997fba6f32224da79bffe045408.exe
    "C:\Users\Admin\AppData\Local\Temp\6d2dd997fba6f32224da79bffe045408.exe"
    1⤵
    • Checks computer location settings
    • Suspicious behavior: GetForegroundWindowSpam
    • Suspicious use of WriteProcessMemory
    PID:4512
    • C:\Users\Admin\AppData\Local\Temp\WindowsServices.exe
      "C:\Users\Admin\AppData\Local\Temp\WindowsServices.exe"
      2⤵
      • Drops startup file
      • Executes dropped EXE
      • Adds Run key to start application
      • Suspicious behavior: GetForegroundWindowSpam
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:3876
      • C:\Windows\SysWOW64\schtasks.exe
        schtasks /create /sc minute /mo 1 /tn Server /tr C:\Users\Admin\AppData\Local\Temp/Server.exe
        3⤵
        • Creates scheduled task(s)
        PID:872
  • C:\Users\Admin\AppData\Local\Temp\Server.exe
    C:\Users\Admin\AppData\Local\Temp/Server.exe
    1⤵
    • Executes dropped EXE
    PID:2324
  • C:\Users\Admin\AppData\Local\Temp\Server.exe
    C:\Users\Admin\AppData\Local\Temp/Server.exe
    1⤵
    • Executes dropped EXE
    PID:2788
  • C:\Users\Admin\AppData\Local\Temp\Server.exe
    C:\Users\Admin\AppData\Local\Temp/Server.exe
    1⤵
    • Executes dropped EXE
    PID:4692

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\Server.exe.log

    Filesize

    507B

    MD5

    25d1b50e7c0d451f3d850eb54d27ca05

    SHA1

    a238807715c70a335f54e80d4855644b21a9e870

    SHA256

    650faa13e983c9046c9030f63a5fa1c33900432ec7cb3762e015da2e7c5b34a5

    SHA512

    4223a26b2fabefdf1c01443ccc7bd887464d27f02694379895a040c66db472d541218d501f1c01e1bd31012d079a31baf24e20882c32cf652a09a74e3bf385f5

  • C:\Users\Admin\AppData\Local\Temp\WindowsServices.exe

    Filesize

    43KB

    MD5

    6d2dd997fba6f32224da79bffe045408

    SHA1

    bb1e4b50edac6717d8c750a40532eb31a2560a41

    SHA256

    59957e041167865b2bd399f65f382246b60837905dca819cb736b50f66f59c7e

    SHA512

    b4e9925b668fab559fd436350855f8fa6ca613e2a2271312f70b0790c71233a09542d54afd3aa504e65ee908a64ccd4b4dcd74047b04a09ee66f11561358169b

  • memory/2324-24-0x00000000745F0000-0x0000000074DA0000-memory.dmp

    Filesize

    7.7MB

  • memory/2324-21-0x00000000745F0000-0x0000000074DA0000-memory.dmp

    Filesize

    7.7MB

  • memory/2324-22-0x0000000005450000-0x0000000005460000-memory.dmp

    Filesize

    64KB

  • memory/2788-29-0x00000000745F0000-0x0000000074DA0000-memory.dmp

    Filesize

    7.7MB

  • memory/2788-32-0x00000000745F0000-0x0000000074DA0000-memory.dmp

    Filesize

    7.7MB

  • memory/2788-31-0x0000000004AD0000-0x0000000004AE0000-memory.dmp

    Filesize

    64KB

  • memory/3876-25-0x0000000005840000-0x000000000584A000-memory.dmp

    Filesize

    40KB

  • memory/3876-16-0x00000000745F0000-0x0000000074DA0000-memory.dmp

    Filesize

    7.7MB

  • memory/3876-27-0x0000000005850000-0x0000000005860000-memory.dmp

    Filesize

    64KB

  • memory/3876-26-0x00000000745F0000-0x0000000074DA0000-memory.dmp

    Filesize

    7.7MB

  • memory/4512-4-0x00000000057B0000-0x0000000005D54000-memory.dmp

    Filesize

    5.6MB

  • memory/4512-2-0x0000000004F40000-0x0000000004FDC000-memory.dmp

    Filesize

    624KB

  • memory/4512-3-0x0000000004ED0000-0x0000000004EE0000-memory.dmp

    Filesize

    64KB

  • memory/4512-1-0x0000000000530000-0x0000000000542000-memory.dmp

    Filesize

    72KB

  • memory/4512-0-0x00000000745F0000-0x0000000074DA0000-memory.dmp

    Filesize

    7.7MB

  • memory/4512-5-0x0000000005300000-0x0000000005392000-memory.dmp

    Filesize

    584KB

  • memory/4512-15-0x00000000745F0000-0x0000000074DA0000-memory.dmp

    Filesize

    7.7MB

  • memory/4692-34-0x00000000745F0000-0x0000000074DA0000-memory.dmp

    Filesize

    7.7MB

  • memory/4692-35-0x00000000745F0000-0x0000000074DA0000-memory.dmp

    Filesize

    7.7MB