Overview

overview

10

Static

static

1

a7ff79a111...7ce.js

windows7-x64

10

a7ff79a111...7ce.js

windows10-2004-x64

10

Analysis

  • max time kernel
    147s
  • max time network
    153s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    02-02-2023 18:10

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General

  • Target

    a7ff79a11115a66f2450844c4b115b799d388d7157ee9d2df27286c0e5acf7ce.js

  • Size

    285KB

  • MD5

    eeacf758acc21133811bce63aa477ee7

  • SHA1

    d2ed9bfbfb8dd47ac3120efc757f43adf3ce3dbf

  • SHA256

    a7ff79a11115a66f2450844c4b115b799d388d7157ee9d2df27286c0e5acf7ce

  • SHA512

    fb97ce1cb831f48f5612976f8401d3eabd580ffb16375f24f53139cc3991a55028fe2a7668024c572b3a08f6e4ef4eca55bca974e07223e5b28901e650ff78b1

  • SSDEEP

    6144:7DrOg9pEJX1WPNSrV8iLgENxGVc+2dfpMAZL6sXZ7lorHawkkt:7DrOrJXAPGZxGVsl6mlsNt

Score
10/10
vjw0rmwshratpersistencetrojanworm

Malware Config

Extracted

Family

wshrat

C2

http://auto.stevenpartners.com:23015

Signatures

  • Vjw0rm

    Vjw0rm is a remote access trojan written in JavaScript.

    trojanwormvjw0rm
  • WSHRAT

    WSHRAT is a variant of Houdini worm and has vbs and js variants.

    trojanwshrat
  • Blocklisted process makes network request 43 IoCs
  • Drops startup file 4 IoCs
  • Adds Run key to start application 2 TTPs 4 IoCs
    persistence
  • Looks up external IP address via web service 1 IoCs

    Uses a legitimate IP lookup service to find the infected system's external IP.

  • Enumerates physical storage devices 1 TTPs

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

  • Script User-Agent 26 IoCs

    Uses user-agent string associated with script host/environment.

  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Windows\system32\wscript.exe
    wscript.exe C:\Users\Admin\AppData\Local\Temp\a7ff79a11115a66f2450844c4b115b799d388d7157ee9d2df27286c0e5acf7ce.js
    1⤵
    • Blocklisted process makes network request
    • Drops startup file
    • Adds Run key to start application
    • Suspicious use of WriteProcessMemory
    PID:1992
    • C:\Windows\System32\wscript.exe
      "C:\Windows\System32\wscript.exe" //B "C:\Users\Admin\AppData\Roaming\GBnMAOQmgU.js"
      2⤵
      • Blocklisted process makes network request
      • Drops startup file
      PID:1220

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

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\GBnMAOQmgU.js
    Filesize

    17KB

    MD5

    4b4e4b65289e3c8364ea3bd6b0255e60

    SHA1

    cc999970a2ca2b76d8dd1c5c7014b7f45ac81d68

    SHA256

    175abae400a769ab8d257f8406c05e25c0c524f55fd3bdc674da1ac0835dea83

    SHA512

    980fc019525812ff47354cee484280d0a64c3cf9d85052f35262d57f464ee444c335d9299a8ce8ac5f28d5cd20fa6ab70871531ba89251588d56c8c27d1e30f8

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  • memory/1220-55-0x0000000000000000-mapping.dmp
    Download
  • memory/1992-54-0x000007FEFB8A1000-0x000007FEFB8A3000-memory.dmp
    Filesize

    8KB

    Download