Overview

overview

10

Static

static

10

0x00070000...90.exe

windows7_x64

10

0x00070000...90.exe

windows10-2004_x64

10

Analysis

  • max time kernel
    149s
  • max time network
    149s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220414-en
  • submitted
    27-06-2022 13:30

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General

  • Target

    0x00070000000133e8-90.exe

  • Size

    25KB

  • MD5

    13a393f4abc0575a0c3661a2058c6a92

  • SHA1

    c35e88355d846094a9b9aeaef3822725cd65c898

  • SHA256

    685deaa148f2ded23bfac7a5bced8399f438b6825c48fa3c4d302470d4c23ad4

  • SHA512

    f33ef8ac7264a64982873a9dc7defff8c161376c59844047cf117b64d35c1d46c708e6fa03e7b2f999233816892ea6bad62f09a81112247502cf611904709ba6

Score
10/10
njrathacked... w2bevasionpersistencesuricatatrojan

Malware Config

Extracted

Family

njrat

Version

0.7d

Botnet

HACKED... W2B

C2

103.149.13.61:4545

Mutex

f33599fc8954f4bf201159e017f34658

Attributes
  • reg_key

    f33599fc8954f4bf201159e017f34658

  • 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
  • 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
  • Drops file in Windows directory 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious behavior: AddClipboardFormatListener 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 35 IoCs
  • Suspicious use of WriteProcessMemory 4 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\0x00070000000133e8-90.exe
    "C:\Users\Admin\AppData\Local\Temp\0x00070000000133e8-90.exe"
    1⤵
    • Checks computer location settings
    • Drops file in Windows directory
    • Suspicious behavior: AddClipboardFormatListener
    • Suspicious use of WriteProcessMemory
    PID:1552
    • C:\Windows\Server.exe
      "C:\Windows\Server.exe"
      2⤵
      • Executes dropped EXE
      • Drops startup file
      • Adds Run key to start application
      • Suspicious behavior: AddClipboardFormatListener
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:4260
      • C:\Windows\SYSTEM32\netsh.exe
        netsh firewall add allowedprogram "C:\Windows\Server.exe" "Server.exe" ENABLE
        3⤵
        • Modifies Windows Firewall
        PID:2152

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

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Downloads

  • C:\Windows\Server.exe
    Filesize

    25KB

    MD5

    13a393f4abc0575a0c3661a2058c6a92

    SHA1

    c35e88355d846094a9b9aeaef3822725cd65c898

    SHA256

    685deaa148f2ded23bfac7a5bced8399f438b6825c48fa3c4d302470d4c23ad4

    SHA512

    f33ef8ac7264a64982873a9dc7defff8c161376c59844047cf117b64d35c1d46c708e6fa03e7b2f999233816892ea6bad62f09a81112247502cf611904709ba6

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

    25KB

    MD5

    13a393f4abc0575a0c3661a2058c6a92

    SHA1

    c35e88355d846094a9b9aeaef3822725cd65c898

    SHA256

    685deaa148f2ded23bfac7a5bced8399f438b6825c48fa3c4d302470d4c23ad4

    SHA512

    f33ef8ac7264a64982873a9dc7defff8c161376c59844047cf117b64d35c1d46c708e6fa03e7b2f999233816892ea6bad62f09a81112247502cf611904709ba6

    Download Submit
  • memory/1552-130-0x00000000002F0000-0x00000000002FC000-memory.dmp
    Filesize

    48KB

    Download
  • memory/1552-131-0x00007FFB4FB80000-0x00007FFB50641000-memory.dmp
    Filesize

    10.8MB

    Download
  • memory/1552-135-0x00007FFB4FB80000-0x00007FFB50641000-memory.dmp
    Filesize

    10.8MB

    Download
  • memory/2152-137-0x0000000000000000-mapping.dmp
    Download
  • memory/4260-132-0x0000000000000000-mapping.dmp
    Download
  • memory/4260-136-0x00007FFB4FB80000-0x00007FFB50641000-memory.dmp
    Filesize

    10.8MB

    Download
  • memory/4260-138-0x00007FFB4FB80000-0x00007FFB50641000-memory.dmp
    Filesize

    10.8MB

    Download