Overview

overview

9

Static

static

7

biamou.exe

windows7_x64

9

biamou.exe

windows10-2004_x64

9

Sharing

Copy URL
Twitter E-mail

General

  • Target

    biamou.exe

  • Size

    3.3MB

  • Sample

    220119-259r6sdhen

  • MD5

    4da9953b63df9701effcbdabf0225a47

  • SHA1

    c6b57281d09a692e818b40c56f1ef08c8a4221fb

  • SHA256

    29080b370df6a00c28578de988c5429aa0fc412c0977aadb1a56d6ed40a7c439

  • SHA512

    2e6e436dfad558c6f52db26bfa510d61ed741c8f3c4d24f755682f8f9d95662a2c2c7bffc0c518eedc9754f3f75b5e8184e6b76b34a9a7e84e007cb51d976d13

Score
9/10
evasionpersistencethemidatrojan

Malware Config

Targets

    • Target

      biamou.exe

    • Size

      3.3MB

    • MD5

      4da9953b63df9701effcbdabf0225a47

    • SHA1

      c6b57281d09a692e818b40c56f1ef08c8a4221fb

    • SHA256

      29080b370df6a00c28578de988c5429aa0fc412c0977aadb1a56d6ed40a7c439

    • SHA512

      2e6e436dfad558c6f52db26bfa510d61ed741c8f3c4d24f755682f8f9d95662a2c2c7bffc0c518eedc9754f3f75b5e8184e6b76b34a9a7e84e007cb51d976d13

    Score
    9/10
    evasionthemidatrojanpersistence

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

      evasion

    • Executes dropped EXE

    • Sets service image path in registry

      persistence

    • Checks BIOS information in registry

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

    • Drops startup file

    • Loads dropped DLL

    • Themida packer

      Detects Themida, an advanced Windows software protection system.

      themida

    • Checks whether UAC is enabled

      evasiontrojan

    • Suspicious use of NtSetInformationThreadHideFromDebugger

    behavioral1behavioral2

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

1
T1060

Privilege Escalation

Defense Evasion

Virtualization/Sandbox Evasion

1
T1497

Modify Registry

1
T1112

Credential Access

Discovery

Query Registry

2
T1012

Virtualization/Sandbox Evasion

1
T1497

System Information Discovery

3
T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Tasks