Overview

overview

10

Static

static

1

HK SEMI CO...Ltd.js

windows7-x64

10

HK SEMI CO...Ltd.js

windows10-2004-x64

10

Sharing

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General

  • Target

    HK SEMI CORPORATION CO,,Ltd.js

  • Size

    3.5MB

  • Sample

    230215-shbr7acd32

  • MD5

    fb91a4c36c78fec96b1aef40d2d59c5f

  • SHA1

    6f80bcc9f8485e7486fc716c47e1f611d688649c

  • SHA256

    fb578011fca33b512fe0f1b92cc192e57fee479a40a53e981ec61ab220b0922d

  • SHA512

    77fd763cb36519248f72a9f821bd421733099e47510d508644cb616e8c321c9b9d7aaffe86f1da8c0023a90230263e32c62b73efe5ed31a304ab7d043820d38a

  • SSDEEP

    6144:DDvsgmpFYY2BrelpSK0XjJr0JS3ZgFt6r6ZpT:DD7Yvt

Score
10/10
vjw0rmwshratpersistencetrojanworm

Malware Config

Extracted

Family

wshrat

C2

http://45.139.105.174:1604

Targets

    • Target

      HK SEMI CORPORATION CO,,Ltd.js

    • Size

      3.5MB

    • MD5

      fb91a4c36c78fec96b1aef40d2d59c5f

    • SHA1

      6f80bcc9f8485e7486fc716c47e1f611d688649c

    • SHA256

      fb578011fca33b512fe0f1b92cc192e57fee479a40a53e981ec61ab220b0922d

    • SHA512

      77fd763cb36519248f72a9f821bd421733099e47510d508644cb616e8c321c9b9d7aaffe86f1da8c0023a90230263e32c62b73efe5ed31a304ab7d043820d38a

    • SSDEEP

      6144:DDvsgmpFYY2BrelpSK0XjJr0JS3ZgFt6r6ZpT:DD7Yvt

    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