Overview

overview

10

Static

static

10

5ae4bcbe93...91.exe

windows7-x64

10

5ae4bcbe93...91.exe

windows10-2004-x64

10

Analysis

  • max time kernel
    151s
  • max time network
    144s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220812-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
  • submitted
    04-10-2022 02:01

Sharing

Copy URL
Twitter E-mail
Report Analysis Logs

General

  • Target

    5ae4bcbe93194d56a314afcf41d3c1ed96338bcd9a0d26d503d0f971bd519191.exe

  • Size

    29KB

  • MD5

    42069907e8aea8dcff5427a86e729620

  • SHA1

    ecd9f062e6f56145b9355c78ad4e8a162168ca09

  • SHA256

    5ae4bcbe93194d56a314afcf41d3c1ed96338bcd9a0d26d503d0f971bd519191

  • SHA512

    83fb3ecc301a664d058a2bb39dc21b3e504ef6fb406cc1676e0c90368ec7a7807e5eeef6ea40832af3893f80c37c7f51c2acecb680132b29c623fb647bfd507a

  • SSDEEP

    768:L+7hoKoGJFNK4Aq1RehBKh0p29SgR4bAs:K7hdKPg6KhG29j4bAs

Score
10/10
njratchromeevasionpersistencetrojan

Malware Config

Extracted

Family

njrat

Version

0.6.4

Botnet

chrome

C2

127.0.0.1:1177

Mutex

d5a38e9b5f206c41f8851bf04a251d26

Attributes
  • reg_key

    d5a38e9b5f206c41f8851bf04a251d26

  • splitter

    |'|'|

Signatures

  • njRAT/Bladabindi

    Widely used RAT written in .NET.

    trojannjrat
  • Executes dropped EXE 1 IoCs
  • 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
  • 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 behavior: EnumeratesProcesses 45 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 6 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\5ae4bcbe93194d56a314afcf41d3c1ed96338bcd9a0d26d503d0f971bd519191.exe
    "C:\Users\Admin\AppData\Local\Temp\5ae4bcbe93194d56a314afcf41d3c1ed96338bcd9a0d26d503d0f971bd519191.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:4804
    • C:\Users\Admin\AppData\Local\Temp\chrome.exe
      "C:\Users\Admin\AppData\Local\Temp\chrome.exe"
      2⤵
      • Executes dropped EXE
      • Drops startup file
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:4832
      • C:\Windows\SysWOW64\netsh.exe
        netsh firewall add allowedprogram "C:\Users\Admin\AppData\Local\Temp\chrome.exe" "chrome.exe" ENABLE
        3⤵
        • Modifies Windows Firewall
        PID:1136

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

Query Registry

1
T1012

System Information Discovery

2
T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

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

    29KB

    MD5

    42069907e8aea8dcff5427a86e729620

    SHA1

    ecd9f062e6f56145b9355c78ad4e8a162168ca09

    SHA256

    5ae4bcbe93194d56a314afcf41d3c1ed96338bcd9a0d26d503d0f971bd519191

    SHA512

    83fb3ecc301a664d058a2bb39dc21b3e504ef6fb406cc1676e0c90368ec7a7807e5eeef6ea40832af3893f80c37c7f51c2acecb680132b29c623fb647bfd507a

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

    29KB

    MD5

    42069907e8aea8dcff5427a86e729620

    SHA1

    ecd9f062e6f56145b9355c78ad4e8a162168ca09

    SHA256

    5ae4bcbe93194d56a314afcf41d3c1ed96338bcd9a0d26d503d0f971bd519191

    SHA512

    83fb3ecc301a664d058a2bb39dc21b3e504ef6fb406cc1676e0c90368ec7a7807e5eeef6ea40832af3893f80c37c7f51c2acecb680132b29c623fb647bfd507a

    Download Submit
  • memory/1136-137-0x0000000000000000-mapping.dmp
    Download
  • memory/4804-132-0x00000000752E0000-0x0000000075891000-memory.dmp
    Filesize

    5.7MB

    Download
  • memory/4804-136-0x00000000752E0000-0x0000000075891000-memory.dmp
    Filesize

    5.7MB

    Download
  • memory/4832-133-0x0000000000000000-mapping.dmp
    Download
  • memory/4832-138-0x00000000752E0000-0x0000000075891000-memory.dmp
    Filesize

    5.7MB

    Download
  • memory/4832-139-0x00000000752E0000-0x0000000075891000-memory.dmp
    Filesize

    5.7MB

    Download