Overview

overview

10

Static

static

10

Server.exe

windows7_x64

10

Analysis

  • max time kernel
    1802s
  • max time network
    1809s
  • platform
    windows7_x64
  • resource
    win7-20220414-en
  • submitted
    08-07-2022 11:07

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General

  • Target

    Server.exe

  • Size

    37KB

  • MD5

    61045a2a1b6d1f802ad27c756cb3948d

  • SHA1

    5d701b8124fe530f4e9e7dcc03df110b61be1754

  • SHA256

    02e08a42d8d05b95e82b8905ea78e24905b5f383e8085e73e5ec6bd6bbb5deb4

  • SHA512

    3e81d942cd968d8a32b989a953f82ee8653fffbe849535399f686dd32d646cb6e3a9186c52d960a29cbff03e1596ebcd7d38e5889c59c7fdfd74e8176158a509

Score
10/10
njratлошокevasionpersistencesuricatatrojan

Malware Config

Extracted

Family

njrat

Version

im523

Botnet

Лошок

C2

194.71.126.120:17954

Mutex

13d65a76848c880b980676c6c1cc6341

Attributes
  • reg_key

    13d65a76848c880b980676c6c1cc6341

  • splitter

    |'|'|

Signatures

  • njRAT/Bladabindi

    Widely used RAT written in .NET.

    trojannjrat
  • suricata: ET MALWARE Generic njRAT/Bladabindi CnC Activity (ll)

    suricata: ET MALWARE Generic njRAT/Bladabindi CnC Activity (ll)

    suricata
  • suricata: ET MALWARE njrat ver 0.7d Malware CnC Callback (Capture)

    suricata: ET MALWARE njrat ver 0.7d Malware CnC Callback (Capture)

    suricata
  • Executes dropped EXE 1 IoCs
  • Modifies Windows Firewall 1 TTPs 1 IoCs
    evasion
  • Drops startup file 2 IoCs
  • Adds Run key to start application 2 TTPs 2 IoCs
    persistence
  • Drops file in Windows directory 3 IoCs
  • 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 64 IoCs
  • Suspicious use of WriteProcessMemory 8 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Server.exe
    "C:\Users\Admin\AppData\Local\Temp\Server.exe"
    1⤵
    • Drops file in Windows directory
    • Suspicious use of WriteProcessMemory
    PID:1084
    • C:\Windows\Dllhost.exe
      "C:\Windows\Dllhost.exe"
      2⤵
      • Executes dropped EXE
      • Drops startup file
      • Adds Run key to start application
      • Drops file in Windows directory
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: GetForegroundWindowSpam
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:800
      • C:\Windows\SysWOW64\netsh.exe
        netsh firewall add allowedprogram "C:\Windows\Dllhost.exe" "Dllhost.exe" ENABLE
        3⤵
        • Modifies Windows Firewall
        PID:1360

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:\Windows\Dllhost.exe
    Filesize

    37KB

    MD5

    61045a2a1b6d1f802ad27c756cb3948d

    SHA1

    5d701b8124fe530f4e9e7dcc03df110b61be1754

    SHA256

    02e08a42d8d05b95e82b8905ea78e24905b5f383e8085e73e5ec6bd6bbb5deb4

    SHA512

    3e81d942cd968d8a32b989a953f82ee8653fffbe849535399f686dd32d646cb6e3a9186c52d960a29cbff03e1596ebcd7d38e5889c59c7fdfd74e8176158a509

    Download Submit
  • C:\Windows\Dllhost.exe
    Filesize

    37KB

    MD5

    61045a2a1b6d1f802ad27c756cb3948d

    SHA1

    5d701b8124fe530f4e9e7dcc03df110b61be1754

    SHA256

    02e08a42d8d05b95e82b8905ea78e24905b5f383e8085e73e5ec6bd6bbb5deb4

    SHA512

    3e81d942cd968d8a32b989a953f82ee8653fffbe849535399f686dd32d646cb6e3a9186c52d960a29cbff03e1596ebcd7d38e5889c59c7fdfd74e8176158a509

    Download Submit
  • memory/800-56-0x0000000000000000-mapping.dmp
    Download
  • memory/800-61-0x0000000074410000-0x00000000749BB000-memory.dmp
    Filesize

    5.7MB

    Download
  • memory/800-62-0x0000000074410000-0x00000000749BB000-memory.dmp
    Filesize

    5.7MB

    Download
  • memory/1084-54-0x0000000075CF1000-0x0000000075CF3000-memory.dmp
    Filesize

    8KB

    Download
  • memory/1084-55-0x0000000074410000-0x00000000749BB000-memory.dmp
    Filesize

    5.7MB

    Download
  • memory/1084-60-0x0000000074410000-0x00000000749BB000-memory.dmp
    Filesize

    5.7MB

    Download
  • memory/1360-63-0x0000000000000000-mapping.dmp
    Download