Overview

overview

10

Static

static

7

fl.exe

windows7_x64

10

fl.exe

windows10_x64

10

Sharing

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General

  • Target

    fl.exe

  • Size

    1.3MB

  • Sample

    220123-vxkpragcd7

  • MD5

    c607b8bf42f152de754d361bae337bdc

  • SHA1

    642fdb6a3aef4b82056a4fd69af925622188b78a

  • SHA256

    e399e3fc1f94f17e12ff0c16f8246523cce8b45c27e6c9b8d484e26dbb94b10a

  • SHA512

    a89bef28c045dbfaf884ceebdbf30ceb9bc1ccc5c8ff4fa4aed78c74c436e65d987c5de40e44161ff3bd476bce9fa7fc6ce63483198ee7c96b310877c566fdd7

Score
10/10
evasionpersistencethemidatrojanupx

Malware Config

Targets

    • Target

      fl.exe

    • Size

      1.3MB

    • MD5

      c607b8bf42f152de754d361bae337bdc

    • SHA1

      642fdb6a3aef4b82056a4fd69af925622188b78a

    • SHA256

      e399e3fc1f94f17e12ff0c16f8246523cce8b45c27e6c9b8d484e26dbb94b10a

    • SHA512

      a89bef28c045dbfaf884ceebdbf30ceb9bc1ccc5c8ff4fa4aed78c74c436e65d987c5de40e44161ff3bd476bce9fa7fc6ce63483198ee7c96b310877c566fdd7

    Score
    10/10
    evasionpersistencethemidatrojanupx

    • Modifies Windows Defender Real-time Protection settings

      evasiontrojan

    • Suspicious use of NtCreateProcessExOtherParentProcess

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

      evasion

    • Downloads MZ/PE file

    • Executes dropped EXE

    • UPX packed file

      Detects executables packed with UPX/modified UPX open source packer.

      upx

    • Checks BIOS information in registry

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

    • Loads dropped DLL

    • Themida packer

      Detects Themida, an advanced Windows software protection system.

      themida

    • Adds Run key to start application

      persistence

    • Checks whether UAC is enabled

      evasiontrojan

    • Suspicious use of SetThreadContext

    behavioral1behavioral2

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Modify Existing Service

1
T1031

Registry Run Keys / Startup Folder

1
T1060

Privilege Escalation

Defense Evasion

Modify Registry

2
T1112

Disabling Security Tools

1
T1089

Virtualization/Sandbox Evasion

1
T1497

Credential Access

Discovery

Query Registry

2
T1012

Virtualization/Sandbox Evasion

1
T1497

System Information Discovery

2
T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Tasks