Analysis

  • max time kernel
    149s
  • max time network
    46s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    13-08-2022 00:35

General

  • Target

    1760-57-0x00000000004B0000-0x00000000004BC000-memory.exe

  • Size

    48KB

  • MD5

    810b91d8cc3eae4a905ea84e7e856b79

  • SHA1

    adc1b9cb064e227017206d6eebc05bd2af4cf3bb

  • SHA256

    5924842a903efbbc3fd42ece1aa2e9405b92fef908442c218b2a27dc0d1328d8

  • SHA512

    3362ad8a7fdd6d0431fc77b032e9207ec45da82b95fab2fec6aec51c66d162f4efa6ba3a2bc5b6fd105ca37aad922401197116dfe4707aca1c4dcf707ecbf1bb

Malware Config

Extracted

Family

njrat

Version

0.7d

Botnet

HacKed

C2

easralahtane.ddns.net:3973

Mutex

4c1e56ee7374309d8fa12b913734d668

Attributes
  • reg_key

    4c1e56ee7374309d8fa12b913734d668

  • splitter

    |'|'|

Signatures

  • njRAT/Bladabindi

    Widely used RAT written in .NET.

  • Executes dropped EXE 1 IoCs
  • Modifies Windows Firewall 1 TTPs 1 IoCs
  • Loads dropped DLL 1 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). Likely ransomware behaviour.

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

Processes

  • C:\Users\Admin\AppData\Local\Temp\1760-57-0x00000000004B0000-0x00000000004BC000-memory.exe
    "C:\Users\Admin\AppData\Local\Temp\1760-57-0x00000000004B0000-0x00000000004BC000-memory.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of WriteProcessMemory
    PID:1044
    • C:\Users\Admin\AppData\Local\Temp\Microsoft .exe
      "C:\Users\Admin\AppData\Local\Temp\Microsoft .exe"
      2⤵
      • Executes dropped EXE
      • Adds Run key to start application
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:1628
      • C:\Windows\SysWOW64\netsh.exe
        netsh firewall add allowedprogram "C:\Users\Admin\AppData\Local\Temp\Microsoft .exe" "Microsoft .exe" ENABLE
        3⤵
        • Modifies Windows Firewall
        PID:1484

Network

MITRE ATT&CK Matrix ATT&CK v6

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

Replay Monitor

Loading Replay Monitor...

Downloads

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

    48KB

    MD5

    810b91d8cc3eae4a905ea84e7e856b79

    SHA1

    adc1b9cb064e227017206d6eebc05bd2af4cf3bb

    SHA256

    5924842a903efbbc3fd42ece1aa2e9405b92fef908442c218b2a27dc0d1328d8

    SHA512

    3362ad8a7fdd6d0431fc77b032e9207ec45da82b95fab2fec6aec51c66d162f4efa6ba3a2bc5b6fd105ca37aad922401197116dfe4707aca1c4dcf707ecbf1bb

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

    48KB

    MD5

    810b91d8cc3eae4a905ea84e7e856b79

    SHA1

    adc1b9cb064e227017206d6eebc05bd2af4cf3bb

    SHA256

    5924842a903efbbc3fd42ece1aa2e9405b92fef908442c218b2a27dc0d1328d8

    SHA512

    3362ad8a7fdd6d0431fc77b032e9207ec45da82b95fab2fec6aec51c66d162f4efa6ba3a2bc5b6fd105ca37aad922401197116dfe4707aca1c4dcf707ecbf1bb

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

    48KB

    MD5

    810b91d8cc3eae4a905ea84e7e856b79

    SHA1

    adc1b9cb064e227017206d6eebc05bd2af4cf3bb

    SHA256

    5924842a903efbbc3fd42ece1aa2e9405b92fef908442c218b2a27dc0d1328d8

    SHA512

    3362ad8a7fdd6d0431fc77b032e9207ec45da82b95fab2fec6aec51c66d162f4efa6ba3a2bc5b6fd105ca37aad922401197116dfe4707aca1c4dcf707ecbf1bb

  • memory/1044-54-0x0000000075501000-0x0000000075503000-memory.dmp
    Filesize

    8KB

  • memory/1044-55-0x0000000074840000-0x0000000074DEB000-memory.dmp
    Filesize

    5.7MB

  • memory/1044-61-0x0000000074840000-0x0000000074DEB000-memory.dmp
    Filesize

    5.7MB

  • memory/1484-63-0x0000000000000000-mapping.dmp
  • memory/1628-57-0x0000000000000000-mapping.dmp
  • memory/1628-62-0x0000000074840000-0x0000000074DEB000-memory.dmp
    Filesize

    5.7MB

  • memory/1628-65-0x0000000074840000-0x0000000074DEB000-memory.dmp
    Filesize

    5.7MB