Overview

overview

10

Static

static

10

8bda4be105...e3.exe

windows7_x64

10

8bda4be105...e3.exe

windows10-2004_x64

10

Analysis

  • max time kernel
    160s
  • max time network
    169s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220414-en
  • submitted
    21-05-2022 00:10

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General

  • Target

    8bda4be105d4767cbf7b264931f375535945f10cf9b4096258b1d151a56897e3.exe

  • Size

    461KB

  • MD5

    a3f35aba528d19877d8cc5b2e06fa9a0

  • SHA1

    0334cc7794bddf94a577ddc399bad9ed3f492a2b

  • SHA256

    8bda4be105d4767cbf7b264931f375535945f10cf9b4096258b1d151a56897e3

  • SHA512

    2b3e42b73886d655110c101256b65cd58118329cf393dd9eae38b66e1259b44dbd2b3cd3964d7e8aa3031360180bc92b2df8c0914c50605842c710b6e2f4533b

Score
10/10
njratnjrat 0.8d new.privateevasionpersistencetrojan

Malware Config

Extracted

Family

njrat

Version

im523

Botnet

njRAT 0.8D New.Private

C2

37.252.7.150,37.252.7.150,37.252.7.150,37.252.7.150,37.252.7.150,37.252.7.150,37.252.7.150,37.252.7.150,37.252.7.150,37.252.7.150,37.252.7.150,37.252.7.150,37.252.7.150,37.252.7.150,37.252.7.150,37.252.7.150,37.252.7.150,37.252.7.150,37.252.7.150,37.252.7.150,37.252.7.150,37.252.7.150,37.252.7.150,37.252.7.150,37.252.7.150,37.252.7.150,37.252.7.150,37.252.7.150,37.252.7.150,37.252.7.150,37.252.7.150,37.252.7.150,37.252.7.150,37.252.7.150,37.252.7.150,37.252.7.150,37.252.7.150,37.252.7.150,37.252.7.150,37.252.7.150,37.252.7.150,37.252.7.150,37.252.7.150,37.252.7.150,37.252.7.150,37.252.7.150,37.252.7.150,37.252.7.150,37.252.7.150,37.252.7.150,37.252.7.150,37.252.7.150,37.252.7.150,37.252.7.150,37.252.7.150,37.252.7.150,37.252.7.150,37.252.7.150,37.252.7.150,37.252.7.150,37.252.7.150,37.252.7.150,37.252.7.150,37.252.7.150,37.252.7.150,37.252.7.150,37.252.7.150,37.252.7.150,37.252.7.150,37.252.7.150,37.252.7.150,37.252.7.150:5555

Mutex

ba98a577fe66f770ed9ea26aff587406

Attributes
  • reg_key

    ba98a577fe66f770ed9ea26aff587406

  • splitter

    |'|'|

Signatures

  • njRAT/Bladabindi

    Widely used RAT written in .NET.

    trojannjrat
  • Executes dropped EXE 1 IoCs
  • Modifies Windows Firewall 1 TTPs
    evasion
  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Drops startup file 2 IoCs
  • Adds Run key to start application 2 TTPs 2 IoCs
    persistence
  • Drops autorun.inf file 1 TTPs

    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 behavior: EnumeratesProcesses 64 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 29 IoCs
  • Suspicious use of WriteProcessMemory 6 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\8bda4be105d4767cbf7b264931f375535945f10cf9b4096258b1d151a56897e3.exe
    "C:\Users\Admin\AppData\Local\Temp\8bda4be105d4767cbf7b264931f375535945f10cf9b4096258b1d151a56897e3.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:4156
    • C:\Users\Admin\AppData\Local\Temp\Summer b 11 Private.exe
      "C:\Users\Admin\AppData\Local\Temp\Summer b 11 Private.exe"
      2⤵
      • Executes dropped EXE
      • Drops startup file
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: GetForegroundWindowSpam
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:4836
      • C:\Windows\SysWOW64\netsh.exe
        netsh firewall add allowedprogram "C:\Users\Admin\AppData\Local\Temp\Summer b 11 Private.exe" "Summer b 11 Private.exe" ENABLE
        3⤵
          PID:912

    Network

    MITRE ATT&CK Enterprise v6

    Replay Monitor

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    Downloads

    • C:\Users\Admin\AppData\Local\Temp\Summer b 11 Private.exe
      Filesize

      461KB

      MD5

      a3f35aba528d19877d8cc5b2e06fa9a0

      SHA1

      0334cc7794bddf94a577ddc399bad9ed3f492a2b

      SHA256

      8bda4be105d4767cbf7b264931f375535945f10cf9b4096258b1d151a56897e3

      SHA512

      2b3e42b73886d655110c101256b65cd58118329cf393dd9eae38b66e1259b44dbd2b3cd3964d7e8aa3031360180bc92b2df8c0914c50605842c710b6e2f4533b

      Download Submit

    • C:\Users\Admin\AppData\Local\Temp\Summer b 11 Private.exe
      Filesize

      461KB

      MD5

      a3f35aba528d19877d8cc5b2e06fa9a0

      SHA1

      0334cc7794bddf94a577ddc399bad9ed3f492a2b

      SHA256

      8bda4be105d4767cbf7b264931f375535945f10cf9b4096258b1d151a56897e3

      SHA512

      2b3e42b73886d655110c101256b65cd58118329cf393dd9eae38b66e1259b44dbd2b3cd3964d7e8aa3031360180bc92b2df8c0914c50605842c710b6e2f4533b

      Download Submit

    • memory/912-135-0x0000000000000000-mapping.dmp

      Download

    • memory/4156-130-0x0000000074960000-0x0000000074F11000-memory.dmp

      Filesize

      5.7MB

      Download

    • memory/4836-131-0x0000000000000000-mapping.dmp

      Download

    • memory/4836-134-0x0000000074960000-0x0000000074F11000-memory.dmp

      Filesize

      5.7MB

      Download