Overview

overview

10

Static

static

10

8f5f1f7e22...04.exe

windows7_x64

10

8f5f1f7e22...04.exe

windows10-2004_x64

10

Analysis

  • max time kernel
    144s
  • max time network
    155s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220414-en
  • submitted
    20-05-2022 22:46

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General

  • Target

    8f5f1f7e22a920eda275f0983d379985ba6b921112308daf60b15b1d0cb04404.exe

  • Size

    31KB

  • MD5

    9e41cd107fb4c1b437246ef8b5fe64ec

  • SHA1

    b5132e4c08c5c038b732a438862eb9c00f437f34

  • SHA256

    8f5f1f7e22a920eda275f0983d379985ba6b921112308daf60b15b1d0cb04404

  • SHA512

    cbb7066396db083179d8adfa668ba49882b8d6272dd6deb5f6b73b30e873b9083bdd2535a76a66edfdc36161526e48ff5e95afd0eb1980db0512c1165fc2748c

Score
10/10
njratmybotevasiontrojan

Malware Config

Extracted

Family

njrat

Version

0.7d

Botnet

MyBot

C2

192.168.157.1:80

Mutex

a5f0657b4c860308399dc7b1f71c2ea3

Attributes
  • reg_key

    a5f0657b4c860308399dc7b1f71c2ea3

  • splitter

    Y262SUCZ4UJJ

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.

  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

  • Suspicious use of AdjustPrivilegeToken 33 IoCs
  • Suspicious use of WriteProcessMemory 6 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\8f5f1f7e22a920eda275f0983d379985ba6b921112308daf60b15b1d0cb04404.exe
    "C:\Users\Admin\AppData\Local\Temp\8f5f1f7e22a920eda275f0983d379985ba6b921112308daf60b15b1d0cb04404.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:3848
    • C:\Users\Admin\AppData\Local\Temp\xui.exe
      "C:\Users\Admin\AppData\Local\Temp\xui.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:4312
      • C:\Windows\SysWOW64\netsh.exe
        netsh firewall add allowedprogram "C:\Users\Admin\AppData\Local\Temp\xui.exe" "xui.exe" ENABLE
        3⤵
          PID:1096

    Network

    MITRE ATT&CK Matrix ATT&CK v6

    Initial Access

    Execution

    Persistence

    Modify Existing Service

    1
    T1031

    Privilege Escalation

    Defense Evasion

    Credential Access

    Discovery

    Query Registry

    1
    T1012

    System Information Discovery

    2
    T1082

    Lateral Movement

    Collection

    Exfiltration

    Command and Control

    Impact

    Replay Monitor

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    Downloads

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

      31KB

      MD5

      9e41cd107fb4c1b437246ef8b5fe64ec

      SHA1

      b5132e4c08c5c038b732a438862eb9c00f437f34

      SHA256

      8f5f1f7e22a920eda275f0983d379985ba6b921112308daf60b15b1d0cb04404

      SHA512

      cbb7066396db083179d8adfa668ba49882b8d6272dd6deb5f6b73b30e873b9083bdd2535a76a66edfdc36161526e48ff5e95afd0eb1980db0512c1165fc2748c

      Download Submit
    • C:\Users\Admin\AppData\Local\Temp\xui.exe
      Filesize

      31KB

      MD5

      9e41cd107fb4c1b437246ef8b5fe64ec

      SHA1

      b5132e4c08c5c038b732a438862eb9c00f437f34

      SHA256

      8f5f1f7e22a920eda275f0983d379985ba6b921112308daf60b15b1d0cb04404

      SHA512

      cbb7066396db083179d8adfa668ba49882b8d6272dd6deb5f6b73b30e873b9083bdd2535a76a66edfdc36161526e48ff5e95afd0eb1980db0512c1165fc2748c

      Download Submit
    • memory/1096-135-0x0000000000000000-mapping.dmp
      Download
    • memory/3848-130-0x0000000075460000-0x0000000075A11000-memory.dmp
      Filesize

      5.7MB

      Download
    • memory/4312-131-0x0000000000000000-mapping.dmp
      Download
    • memory/4312-134-0x0000000075460000-0x0000000075A11000-memory.dmp
      Filesize

      5.7MB

      Download