Analysis

  • max time kernel
    150s
  • max time network
    152s
  • platform
    windows10_x64
  • resource
    win10-en
  • submitted
    16-09-2021 13:56

General

  • Target

    6C8F0805290D03AB8FE1D2E21EAF62B80AB8677C43027.exe

  • Size

    82KB

  • MD5

    42f06a2dd04a0b84c019557cc07f0cb6

  • SHA1

    9f8b00c0cefd6e80ed813ac25b55b57e1289c724

  • SHA256

    6c8f0805290d03ab8fe1d2e21eaf62b80ab8677c430272f23dea52de6e4d8998

  • SHA512

    15228012f88fb714d868aec24574c532bb49a7f56ebdd8a97922d0a569a37c6f112cdb1224db37df50196c9cc08c07e90a1f72c26978adaaeec12212ef9a9556

Malware Config

Extracted

Family

njrat

Version

0.7 MultiHost

Botnet

000000

C2

karmina112.sytes.net,karmina115.sytes.net,burdun.dynu.net,burdun115.dynu.net,anunankis3.duckdns.org:1177

Mutex

670b14728ad9902aecba32e22fa4f6bd

Attributes
  • reg_key

    670b14728ad9902aecba32e22fa4f6bd

  • splitter

    |'|'|

Signatures

  • njRAT/Bladabindi

    Widely used RAT written in .NET.

  • Executes dropped EXE 2 IoCs
  • Drops startup file 3 IoCs
  • Adds Run key to start application 2 TTPs 2 IoCs
  • Suspicious use of SetThreadContext 2 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 19 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\6C8F0805290D03AB8FE1D2E21EAF62B80AB8677C43027.exe
    "C:\Users\Admin\AppData\Local\Temp\6C8F0805290D03AB8FE1D2E21EAF62B80AB8677C43027.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:3980
    • C:\Users\Admin\AppData\Local\Temp\6C8F0805290D03AB8FE1D2E21EAF62B80AB8677C43027.exe
      "C:\Users\Admin\AppData\Local\Temp\6C8F0805290D03AB8FE1D2E21EAF62B80AB8677C43027.exe"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:3988
      • C:\Users\Admin\AppData\Local\Temp\svchost.exe
        "C:\Users\Admin\AppData\Local\Temp\svchost.exe"
        3⤵
        • Executes dropped EXE
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:3916
        • C:\Users\Admin\AppData\Local\Temp\svchost.exe
          "C:\Users\Admin\AppData\Local\Temp\svchost.exe"
          4⤵
          • Executes dropped EXE
          • Drops startup file
          • Adds Run key to start application
          • Suspicious use of AdjustPrivilegeToken
          PID:3572

Network

MITRE ATT&CK Matrix ATT&CK v6

Persistence

Registry Run Keys / Startup Folder

1
T1060

Defense Evasion

Modify Registry

1
T1112

Discovery

System Information Discovery

1
T1082

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Microsoft\CLR_v2.0_32\UsageLogs\6C8F0805290D03AB8FE1D2E21EAF62B80AB8677C43027.exe.log
    MD5

    c748e8ca8696cef7e06115966216593a

    SHA1

    de51083153bc4e802050a6f3f8e2d273ea36e564

    SHA256

    b83056f659f6c279f69432c96fcf4d90adde41c8a3798d3105e26fe8b864759d

    SHA512

    d29689f58a3c672c5c2bc1a13d9b7ce7cf147f95364f54265f40783817b66e112e81e72a4e215e745a66d3ebfe57985c38d98b484646bfb01a7e92e805660ca2

  • C:\Users\Admin\AppData\Local\Microsoft\CLR_v2.0_32\UsageLogs\svchost.exe.log
    MD5

    c748e8ca8696cef7e06115966216593a

    SHA1

    de51083153bc4e802050a6f3f8e2d273ea36e564

    SHA256

    b83056f659f6c279f69432c96fcf4d90adde41c8a3798d3105e26fe8b864759d

    SHA512

    d29689f58a3c672c5c2bc1a13d9b7ce7cf147f95364f54265f40783817b66e112e81e72a4e215e745a66d3ebfe57985c38d98b484646bfb01a7e92e805660ca2

  • C:\Users\Admin\AppData\Local\Temp\svchost.exe
    MD5

    42f06a2dd04a0b84c019557cc07f0cb6

    SHA1

    9f8b00c0cefd6e80ed813ac25b55b57e1289c724

    SHA256

    6c8f0805290d03ab8fe1d2e21eaf62b80ab8677c430272f23dea52de6e4d8998

    SHA512

    15228012f88fb714d868aec24574c532bb49a7f56ebdd8a97922d0a569a37c6f112cdb1224db37df50196c9cc08c07e90a1f72c26978adaaeec12212ef9a9556

  • C:\Users\Admin\AppData\Local\Temp\svchost.exe
    MD5

    42f06a2dd04a0b84c019557cc07f0cb6

    SHA1

    9f8b00c0cefd6e80ed813ac25b55b57e1289c724

    SHA256

    6c8f0805290d03ab8fe1d2e21eaf62b80ab8677c430272f23dea52de6e4d8998

    SHA512

    15228012f88fb714d868aec24574c532bb49a7f56ebdd8a97922d0a569a37c6f112cdb1224db37df50196c9cc08c07e90a1f72c26978adaaeec12212ef9a9556

  • C:\Users\Admin\AppData\Local\Temp\svchost.exe
    MD5

    42f06a2dd04a0b84c019557cc07f0cb6

    SHA1

    9f8b00c0cefd6e80ed813ac25b55b57e1289c724

    SHA256

    6c8f0805290d03ab8fe1d2e21eaf62b80ab8677c430272f23dea52de6e4d8998

    SHA512

    15228012f88fb714d868aec24574c532bb49a7f56ebdd8a97922d0a569a37c6f112cdb1224db37df50196c9cc08c07e90a1f72c26978adaaeec12212ef9a9556

  • memory/3572-124-0x0000000000407ACE-mapping.dmp
  • memory/3572-128-0x0000000003501000-0x0000000003502000-memory.dmp
    Filesize

    4KB

  • memory/3916-120-0x0000000000000000-mapping.dmp
  • memory/3916-127-0x0000000002801000-0x0000000002802000-memory.dmp
    Filesize

    4KB

  • memory/3980-115-0x0000000002C70000-0x0000000002C71000-memory.dmp
    Filesize

    4KB

  • memory/3988-117-0x0000000000407ACE-mapping.dmp
  • memory/3988-119-0x0000000000E70000-0x0000000000F1E000-memory.dmp
    Filesize

    696KB

  • memory/3988-116-0x0000000000400000-0x000000000040C000-memory.dmp
    Filesize

    48KB