General

  • Target

    lnvoice-1205700442.pdf (4).js

  • Size

    1.8MB

  • Sample

    240506-g4bhrsca4y

  • MD5

    fffee7bcbf8f724b68d02ebe0c5a133b

  • SHA1

    739696c36214a1a37f382b4da835ba44d2665027

  • SHA256

    b9b4fb770fdb055d474f1a54886bdc380c22afa777a3a0aeaf42a04dcb6a56a8

  • SHA512

    3f2bd2aa6b5cb22aa0c2042fa3af032c83b55f7e5407344cdb502abaf33b3e42d2e0073540226e6a8f3e09f3495ddbc339bfa29a38e420f11583632aa55fe8f4

  • SSDEEP

    768:cNWDuYelMVBbnPOgADSb8O/b64/jWsYOS+Hu8N0RNta7SuHiHwdcU6AH6xgO:JewBbnPOgnh/6OSAuNA6H9AH83

Malware Config

Targets

    • Target

      lnvoice-1205700442.pdf (4).js

    • Size

      1.8MB

    • MD5

      fffee7bcbf8f724b68d02ebe0c5a133b

    • SHA1

      739696c36214a1a37f382b4da835ba44d2665027

    • SHA256

      b9b4fb770fdb055d474f1a54886bdc380c22afa777a3a0aeaf42a04dcb6a56a8

    • SHA512

      3f2bd2aa6b5cb22aa0c2042fa3af032c83b55f7e5407344cdb502abaf33b3e42d2e0073540226e6a8f3e09f3495ddbc339bfa29a38e420f11583632aa55fe8f4

    • SSDEEP

      768:cNWDuYelMVBbnPOgADSb8O/b64/jWsYOS+Hu8N0RNta7SuHiHwdcU6AH6xgO:JewBbnPOgnh/6OSAuNA6H9AH83

    • Blocklisted process makes network request

    • Checks computer location settings

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

    • Obfuscated with Agile.Net obfuscator

      Detects use of the Agile.Net commercial obfuscator, which is capable of entity renaming and control flow obfuscation.

    • Adds Run key to start application

    • Legitimate hosting services abused for malware hosting/C2

    • Looks up external IP address via web service

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

    • Suspicious use of SetThreadContext

MITRE ATT&CK Matrix ATT&CK v13

Execution

Command and Scripting Interpreter

1
T1059

JavaScript

1
T1059.007

Persistence

Boot or Logon Autostart Execution

1
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

1
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Defense Evasion

Modify Registry

1
T1112

Discovery

Query Registry

3
T1012

System Information Discovery

4
T1082

Command and Control

Web Service

1
T1102

Tasks