Overview

overview

10

Static

static

10

8f7070b244...50.exe

windows7-x64

10

8f7070b244...50.exe

windows10-2004-x64

10

Analysis

  • max time kernel
    150s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20230220-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20230220-enlocale:en-usos:windows10-2004-x64system
  • submitted
    23-03-2023 01:18

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General

  • Target

    8f7070b244f6d3559a7e5d4bb8682ec5bca8aacd37104c827d1897c3f6cd0650.exe

  • Size

    36KB

  • MD5

    575c1492c69a86293f944a8cc528ce78

  • SHA1

    656d2ea8cd84cf5a867c1ca0561bc9625710d3ac

  • SHA256

    8f7070b244f6d3559a7e5d4bb8682ec5bca8aacd37104c827d1897c3f6cd0650

  • SHA512

    8d8cd00a2f994c2442297a57f27218281a3e80a3d33730e554d73c7321321436149a580da696fa2991c6328782cc0c953935f9f96766c76bb2288ec654a53dc3

  • SSDEEP

    768:VOgJlLJfcPCojPysIorM+rMRa8NuH0qt:VOgJlLJUJjP2z+gRJNu0

Score
10/10
njratcheatevasionpersistencetrojan

Malware Config

Extracted

Family

njrat

Version

im523

Botnet

cheat

C2

2.tcp.eu.ngrok.io:17504

Mutex

b05dabd0487f13e40a479ae7210235a7

Attributes
  • reg_key

    b05dabd0487f13e40a479ae7210235a7

  • splitter

    |'|'|

Signatures

  • njRAT/Bladabindi

    Widely used RAT written in .NET.

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

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

  • Drops startup file 2 IoCs
  • Executes dropped EXE 1 IoCs
  • Adds Run key to start application 2 TTPs 2 IoCs
    persistence
  • Legitimate hosting services abused for malware hosting/C2 1 TTPs
  • Drops autorun.inf file 1 TTPs 3 IoCs

    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 35 IoCs
  • Suspicious use of WriteProcessMemory 6 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\8f7070b244f6d3559a7e5d4bb8682ec5bca8aacd37104c827d1897c3f6cd0650.exe
    "C:\Users\Admin\AppData\Local\Temp\8f7070b244f6d3559a7e5d4bb8682ec5bca8aacd37104c827d1897c3f6cd0650.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:4644
    • C:\Users\Admin\AppData\Local\Temp\GestLoader.exe
      "C:\Users\Admin\AppData\Local\Temp\GestLoader.exe"
      2⤵
      • Drops startup file
      • Executes dropped EXE
      • Adds Run key to start application
      • Drops autorun.inf file
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: GetForegroundWindowSpam
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:4436
      • C:\Windows\SysWOW64\netsh.exe
        netsh firewall add allowedprogram "C:\Users\Admin\AppData\Local\Temp\GestLoader.exe" "GestLoader.exe" ENABLE
        3⤵
        • Modifies Windows Firewall
        PID:4496

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Replication Through Removable Media

1
T1091

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

Query Registry

1
T1012

System Information Discovery

2
T1082

Lateral Movement

Replication Through Removable Media

1
T1091

Collection

Exfiltration

Command and Control

Web Service

1
T1102

Impact

Replay Monitor

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Downloads

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

    36KB

    MD5

    575c1492c69a86293f944a8cc528ce78

    SHA1

    656d2ea8cd84cf5a867c1ca0561bc9625710d3ac

    SHA256

    8f7070b244f6d3559a7e5d4bb8682ec5bca8aacd37104c827d1897c3f6cd0650

    SHA512

    8d8cd00a2f994c2442297a57f27218281a3e80a3d33730e554d73c7321321436149a580da696fa2991c6328782cc0c953935f9f96766c76bb2288ec654a53dc3

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

    36KB

    MD5

    575c1492c69a86293f944a8cc528ce78

    SHA1

    656d2ea8cd84cf5a867c1ca0561bc9625710d3ac

    SHA256

    8f7070b244f6d3559a7e5d4bb8682ec5bca8aacd37104c827d1897c3f6cd0650

    SHA512

    8d8cd00a2f994c2442297a57f27218281a3e80a3d33730e554d73c7321321436149a580da696fa2991c6328782cc0c953935f9f96766c76bb2288ec654a53dc3

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

    36KB

    MD5

    575c1492c69a86293f944a8cc528ce78

    SHA1

    656d2ea8cd84cf5a867c1ca0561bc9625710d3ac

    SHA256

    8f7070b244f6d3559a7e5d4bb8682ec5bca8aacd37104c827d1897c3f6cd0650

    SHA512

    8d8cd00a2f994c2442297a57f27218281a3e80a3d33730e554d73c7321321436149a580da696fa2991c6328782cc0c953935f9f96766c76bb2288ec654a53dc3

    Download Submit
  • memory/4436-143-0x0000000001660000-0x0000000001670000-memory.dmp
    Filesize

    64KB

    Download
  • memory/4436-149-0x0000000001660000-0x0000000001670000-memory.dmp
    Filesize

    64KB

    Download
  • memory/4644-133-0x00000000017E0000-0x00000000017F0000-memory.dmp
    Filesize

    64KB

    Download