Overview

overview

10

Static

static

1

old outsta...PDF.js

windows7-x64

10

old outsta...PDF.js

windows10-2004-x64

10

Sharing

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General

  • Target

    a325d86c0dea86e974f3b09ec72f51b4.bin

  • Size

    761KB

  • Sample

    230519-b89cpsdd4v

  • MD5

    134f8a9ae91b00fc9d6103c433dcb35a

  • SHA1

    88168532a8a803c3f9ff552b1b4e758ee1c00d7b

  • SHA256

    de852e1b1e43123cddc6cbe268aa7ab3785f8fa025827e71f2ba003fd4fae221

  • SHA512

    a01a0f50795c5e3817bcb20358b72fede608f9c562720579bad3e3aa025dd0925a038993bfc92fb737243ab17e64445db3bf6e05a57d06b09e3576e7eaed3391

  • SSDEEP

    12288:0CuZH29x2WP+AfjItYWMcD46YKPu4izlw23KwYkksVl8WlwaAkfqdX7e6Lws2:+ZElfAYuMJRKwZkMZwaAnFb2

Score
10/10
vjw0rmwshratpersistencetrojanworm

Malware Config

Extracted

Family

wshrat

C2

http://84.21.172.33:8895

Targets

    • Target

      old outstanding .PDF.js

    • Size

      3.4MB

    • MD5

      f8ddd3aaf61755a6c98ec2c29972175c

    • SHA1

      1ddd1757ef6be65c231dc383369b84773544a6da

    • SHA256

      344b8c7c7c4467f18c9b43447efafad8ac795c25b006465aeb1bd6097b50abb7

    • SHA512

      a6ebf3d3ffa5c749f2ea2dc5eb90a7a355b8dcc1cf5b7b48cfdbc291b8f5f6df560ffcd59a6242583e64d0795ba034ad7aea2b68039b98b9b50259305e13e1c9

    • SSDEEP

      24576:zw3cOiE9u9QbpAW0MP074JExjtKTs7JRkWgGgbR4L3lN2bpxjkn1vrFWuYLasHfy:E0j

    Score
    10/10
    vjw0rmwshratpersistencetrojanworm

    • 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

    • Checks computer location settings

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

    • Drops startup file

    • Adds Run key to start application

      persistence
    behavioral1behavioral2

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

Query Registry

1
T1012

System Information Discovery

2
T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Tasks