Overview

overview

10

Static

static

1

Tax Return...765.js

windows7-x64

10

Tax Return...765.js

windows11-21h2-x64

10

Resubmissions

21-06-2024 12:37

240621-ptjematemr 3

21-06-2024 12:08

240621-paxg5sygkd 1

21-06-2024 12:05

240621-n9n5dasgpn 1

21-06-2024 12:05

240621-n9fs1ayfpc 1

21-06-2024 12:05

240621-n87v4asgmq 3

21-06-2024 06:25

240621-g6p4yatfjl 1

13-06-2024 04:58

240613-flzbfaydrn 10

Analysis

  • max time kernel
    296s
  • max time network
    298s
  • platform
    windows11-21h2_x64
  • resource
    win11-20240508-en
  • resource tags

    arch:x64arch:x86image:win11-20240508-enlocale:en-usos:windows11-21h2-x64system
  • submitted
    24-05-2024 12:49

Sharing

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Report Analysis Logs

General

  • Target

    Tax Returns of R48_765.js

  • Size

    957KB

  • MD5

    0f597e6821a29bc87b36222f08eff311

  • SHA1

    e7f24cd04de9b92c013d71d3de526461cfb33c91

  • SHA256

    df018cc7e708b47edfe4f39769058ce0ba10a65fe653d3a32412dd504d3f2028

  • SHA512

    693ed1331f7f048789c11bc661949519149c43e3a76b3b600a1990f74763500a6b4a5efb532921bcdb58b27f3a136af9ba63e2e1dce4094fe078076d0073f1a7

  • SSDEEP

    6144:QQ5C90ha3hcY0c5OyZD5i8frkU+uKCbbBGZs3xh527wIy+6Y16vLKdYoiAL1Xl4R:TKF

Score
10/10
wshratexecutiontrojan

Malware Config

Extracted

Family

wshrat

C2

http://harold.2waky.com:3609

Signatures

  • WSHRAT

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

    trojanwshrat
  • Blocklisted process makes network request 51 IoCs
  • Drops startup file 2 IoCs
  • Looks up external IP address via web service 1 IoCs

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

  • Command and Scripting Interpreter: JavaScript 1 TTPs
    execution
  • Enumerates physical storage devices 1 TTPs

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

  • Script User-Agent 50 IoCs

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

  • Suspicious use of WriteProcessMemory 2 IoCs

Processes

  • C:\Windows\system32\wscript.exe
    wscript.exe "C:\Users\Admin\AppData\Local\Temp\Tax Returns of R48_765.js"
    1⤵
    • Drops startup file
    • Suspicious use of WriteProcessMemory
    PID:3032
    • C:\Windows\System32\wscript.exe
      "C:\Windows\System32\wscript.exe" //B "C:\Users\Admin\AppData\Roaming\Tax Returns of R48_765.js"
      2⤵
      • Blocklisted process makes network request
      • Drops startup file
      PID:2368

Network

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Command and Scripting Interpreter

1
T1059

JavaScript

1
T1059.007

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

1
T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Tax Returns of R48_765.js
    MD5

    d41d8cd98f00b204e9800998ecf8427e

    SHA1

    da39a3ee5e6b4b0d3255bfef95601890afd80709

    SHA256

    e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855

    SHA512

    cf83e1357eefb8bdf1542850d66d8007d620e4050b5715dc83f4a921d36ce9ce47d0d13c5d85f2b0ff8318d2877eec2f63b931bd47417a81a538327af927da3e

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  • C:\Users\Admin\AppData\Roaming\Tax Returns of R48_765.js
    Filesize

    957KB

    MD5

    0f597e6821a29bc87b36222f08eff311

    SHA1

    e7f24cd04de9b92c013d71d3de526461cfb33c91

    SHA256

    df018cc7e708b47edfe4f39769058ce0ba10a65fe653d3a32412dd504d3f2028

    SHA512

    693ed1331f7f048789c11bc661949519149c43e3a76b3b600a1990f74763500a6b4a5efb532921bcdb58b27f3a136af9ba63e2e1dce4094fe078076d0073f1a7

    Download Submit