General

  • Target

    41a98f1b2ee8d81ec81b8cc9433424a8f7f9f9e513f8bcaab7a7ba1c522313d8

  • Size

    2.4MB

  • Sample

    220215-rbckgaghfl

  • MD5

    a287d97f20d4608c53d2bc5e9d64b94d

  • SHA1

    b3a444db0d000a7905987dc445ecfee9bb3990fc

  • SHA256

    41a98f1b2ee8d81ec81b8cc9433424a8f7f9f9e513f8bcaab7a7ba1c522313d8

  • SHA512

    1a2324eaff128cc6d62686b565bb108b6b4aeab12d662d329ffcc327eac812958b48b8e0b6dc07f1fc3f30597775074db14f6ec556b34a6c8d75810281ac4260

Malware Config

Targets

    • Target

      41a98f1b2ee8d81ec81b8cc9433424a8f7f9f9e513f8bcaab7a7ba1c522313d8

    • Size

      2.4MB

    • MD5

      a287d97f20d4608c53d2bc5e9d64b94d

    • SHA1

      b3a444db0d000a7905987dc445ecfee9bb3990fc

    • SHA256

      41a98f1b2ee8d81ec81b8cc9433424a8f7f9f9e513f8bcaab7a7ba1c522313d8

    • SHA512

      1a2324eaff128cc6d62686b565bb108b6b4aeab12d662d329ffcc327eac812958b48b8e0b6dc07f1fc3f30597775074db14f6ec556b34a6c8d75810281ac4260

    • Identifies VirtualBox via ACPI registry values (likely anti-VM)

    • Blocklisted process makes network request

    • Checks BIOS information in registry

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

    • Checks computer location settings

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

    • Themida packer

      Detects Themida, an advanced Windows software protection system.

    • Checks whether UAC is enabled

    • 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 NtSetInformationThreadHideFromDebugger

MITRE ATT&CK Matrix ATT&CK v6

Defense Evasion

Virtualization/Sandbox Evasion

1
T1497

Discovery

Query Registry

4
T1012

Virtualization/Sandbox Evasion

1
T1497

System Information Discovery

5
T1082

Command and Control

Web Service

1
T1102

Tasks