Overview

overview

10

Static

static

10

99cb8a2b01...f3.exe

windows7_x64

10

99cb8a2b01...f3.exe

windows10-2004_x64

10

Analysis

  • max time kernel
    150s
  • max time network
    153s
  • platform
    windows7_x64
  • resource
    win7-20220414-en
  • submitted
    20-05-2022 22:15

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General

  • Target

    99cb8a2b010a657317a30425acab24c28dd556107366110d46f5898358c896f3.exe

  • Size

    31KB

  • MD5

    c4052a8ed716a003f35f143aec75c6da

  • SHA1

    6f4c095feb4a7a907cde2c31257307e05a57ea6c

  • SHA256

    99cb8a2b010a657317a30425acab24c28dd556107366110d46f5898358c896f3

  • SHA512

    70442826d00a7b5fb51efde31efa5d593b452f1e9f670dc0944930388662b7dd63ad3a9d6cbfa56c812653bd7915d4c70c2a5425c452ad64cb9ddacaeaa0cb66

Score
10/10
njratmybotfrfrevasionpersistencetrojan

Malware Config

Extracted

Family

njrat

Version

0.7d

Botnet

MyBotfrfr

C2

82.146.50.128:2302

Mutex

77f1fad6f247f8bcb2ee2a1b640c0a71

Attributes
  • reg_key

    77f1fad6f247f8bcb2ee2a1b640c0a71

  • splitter

    Y262SUCZ4UJJ

Signatures

  • njRAT/Bladabindi

    Widely used RAT written in .NET.

    trojannjrat
  • Executes dropped EXE 1 IoCs
  • Modifies Windows Firewall 1 TTPs
    evasion
  • Drops startup file 2 IoCs
  • Loads dropped DLL 1 IoCs
  • Adds Run key to start application 2 TTPs 2 IoCs
    persistence
  • 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\99cb8a2b010a657317a30425acab24c28dd556107366110d46f5898358c896f3.exe
    "C:\Users\Admin\AppData\Local\Temp\99cb8a2b010a657317a30425acab24c28dd556107366110d46f5898358c896f3.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of WriteProcessMemory
    PID:560
    • C:\Users\Admin\AppData\Roaming\govno.exe
      "C:\Users\Admin\AppData\Roaming\govno.exe"
      2⤵
      • Executes dropped EXE
      • Drops startup file
      • Adds Run key to start application
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:2024
      • C:\Windows\SysWOW64\netsh.exe
        netsh firewall add allowedprogram "C:\Users\Admin\AppData\Roaming\govno.exe" "govno.exe" ENABLE
        3⤵
          PID:1740

    Network

    MITRE ATT&CK Matrix ATT&CK v6

    Initial Access

    Execution

    Persistence

    Modify Existing Service

    1
    T1031

    Registry Run Keys / Startup Folder

    1
    T1060

    Privilege Escalation

    Defense Evasion

    Modify Registry

    1
    T1112

    Credential Access

    Discovery

    System Information Discovery

    1
    T1082

    Lateral Movement

    Collection

    Exfiltration

    Command and Control

    Impact

    Replay Monitor

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    Downloads

    • C:\Users\Admin\AppData\Roaming\govno.exe
      Filesize

      31KB

      MD5

      c4052a8ed716a003f35f143aec75c6da

      SHA1

      6f4c095feb4a7a907cde2c31257307e05a57ea6c

      SHA256

      99cb8a2b010a657317a30425acab24c28dd556107366110d46f5898358c896f3

      SHA512

      70442826d00a7b5fb51efde31efa5d593b452f1e9f670dc0944930388662b7dd63ad3a9d6cbfa56c812653bd7915d4c70c2a5425c452ad64cb9ddacaeaa0cb66

      Download Submit
    • C:\Users\Admin\AppData\Roaming\govno.exe
      Filesize

      31KB

      MD5

      c4052a8ed716a003f35f143aec75c6da

      SHA1

      6f4c095feb4a7a907cde2c31257307e05a57ea6c

      SHA256

      99cb8a2b010a657317a30425acab24c28dd556107366110d46f5898358c896f3

      SHA512

      70442826d00a7b5fb51efde31efa5d593b452f1e9f670dc0944930388662b7dd63ad3a9d6cbfa56c812653bd7915d4c70c2a5425c452ad64cb9ddacaeaa0cb66

      Download Submit
    • \Users\Admin\AppData\Roaming\govno.exe
      Filesize

      31KB

      MD5

      c4052a8ed716a003f35f143aec75c6da

      SHA1

      6f4c095feb4a7a907cde2c31257307e05a57ea6c

      SHA256

      99cb8a2b010a657317a30425acab24c28dd556107366110d46f5898358c896f3

      SHA512

      70442826d00a7b5fb51efde31efa5d593b452f1e9f670dc0944930388662b7dd63ad3a9d6cbfa56c812653bd7915d4c70c2a5425c452ad64cb9ddacaeaa0cb66

      Download Submit
    • memory/560-54-0x0000000075271000-0x0000000075273000-memory.dmp
      Filesize

      8KB

      Download
    • memory/560-55-0x0000000074500000-0x0000000074AAB000-memory.dmp
      Filesize

      5.7MB

      Download
    • memory/1740-62-0x0000000000000000-mapping.dmp
      Download
    • memory/2024-57-0x0000000000000000-mapping.dmp
      Download
    • memory/2024-61-0x0000000074500000-0x0000000074AAB000-memory.dmp
      Filesize

      5.7MB

      Download