Resubmissions

30-06-2024 16:06

240630-tj7fxszgqe 7

30-06-2024 16:01

240630-tf93mszgpa 7

30-06-2024 15:57

240630-td2cqazgmc 7

General

  • Target

    keysystem.exe

  • Size

    11.7MB

  • Sample

    240630-tj7fxszgqe

  • MD5

    43cddb521fa7ddcad67e110b574834b2

  • SHA1

    c90567b8b299c4033e76dd7eea6d352fa736aa2d

  • SHA256

    7ac2dec21e85907a6a836643e4818409a01ab0c02f134698dd58c132c183e05e

  • SHA512

    a4d48557c36350c8700561ebb7c3507dfc74aeca3be9fd73bad086a389cd3a3ea5466306ec8b9b4bcac67215d5fd51760e03a6c9c3f021bf32254b3cee59f776

  • SSDEEP

    196608:Zqc4ItH0GA1HeT39IigwE1ncKOVVthIUo0W8/Lo79u5Y3j7lBvUniyQIWA3affF:EcHF0f1+TtIiFg0VNRW8E5u6/jgZcf

Malware Config

Targets

    • Target

      keysystem.exe

    • Size

      11.7MB

    • MD5

      43cddb521fa7ddcad67e110b574834b2

    • SHA1

      c90567b8b299c4033e76dd7eea6d352fa736aa2d

    • SHA256

      7ac2dec21e85907a6a836643e4818409a01ab0c02f134698dd58c132c183e05e

    • SHA512

      a4d48557c36350c8700561ebb7c3507dfc74aeca3be9fd73bad086a389cd3a3ea5466306ec8b9b4bcac67215d5fd51760e03a6c9c3f021bf32254b3cee59f776

    • SSDEEP

      196608:Zqc4ItH0GA1HeT39IigwE1ncKOVVthIUo0W8/Lo79u5Y3j7lBvUniyQIWA3affF:EcHF0f1+TtIiFg0VNRW8E5u6/jgZcf

    • Checks computer location settings

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

    • Event Triggered Execution: Component Object Model Hijacking

      Adversaries may establish persistence by executing malicious content triggered by hijacked references to Component Object Model (COM) objects.

    • Executes dropped EXE

    • Loads dropped DLL

    • Modifies system executable filetype association

    • Adds Run key to start application

    • Checks installed software on the system

      Looks up Uninstall key entries in the registry to enumerate software on the system.

    • Checks system information in the registry

      System information is often read in order to detect sandboxing environments.

MITRE ATT&CK Matrix ATT&CK v13

Persistence

Event Triggered Execution

2
T1546

Change Default File Association

1
T1546.001

Component Object Model Hijacking

1
T1546.015

Boot or Logon Autostart Execution

1
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Privilege Escalation

Event Triggered Execution

2
T1546

Change Default File Association

1
T1546.001

Component Object Model Hijacking

1
T1546.015

Boot or Logon Autostart Execution

1
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Defense Evasion

Modify Registry

3
T1112

Discovery

Query Registry

4
T1012

System Information Discovery

4
T1082

Tasks