855369a144b1aa10dba06b6b5f12e866912f7f3dca6e905b822ee12aaea3b3f0 | Triage

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Overview

overview

Static

static

7

90428802a4...35.exe

windows7-x64

90428802a4...35.exe

windows10-2004-x64

Sharing

General

Target

90428802a49f12a106b15e2bd21bdc35
Size

2.6MB
Sample

231222-p36xaadff5
MD5

90428802a49f12a106b15e2bd21bdc35
SHA1

4d701ff5725c177fd516c183e0f84a275a80adf5
SHA256

855369a144b1aa10dba06b6b5f12e866912f7f3dca6e905b822ee12aaea3b3f0
SHA512

cbaf18998859fc686c87e253c71c85ccdf85e34daf05f469d7d66b550f1458528b4f30678a9118ab2d9fee0b60934427d6313905927b857f44b0653f0450da12
SSDEEP

49152:tU/5M1X4Wl/YvzYCQR9RQs+C40yZpJaD99Gn:tKq4oEa9RQs+Cn4/UKn

Score

10^/10

evasion persistence themida trojan

Static task

static1

2 signatures

Behavioral task

behavioral1

Sample

90428802a49f12a106b15e2bd21bdc35.exe

Resource

win7-20231215-en

evasion persistence themida trojan

windows7-x64

16 signatures

150 seconds

Behavioral task

behavioral2

Sample

90428802a49f12a106b15e2bd21bdc35.exe

Resource

win10v2004-20231215-en

evasion persistence themida trojan

windows10-2004-x64

14 signatures

150 seconds

Malware Config

Targets

- Target
  
  90428802a49f12a106b15e2bd21bdc35
- Size
  
  2.6MB
- MD5
  
  90428802a49f12a106b15e2bd21bdc35
- SHA1
  
  4d701ff5725c177fd516c183e0f84a275a80adf5
- SHA256
  
  855369a144b1aa10dba06b6b5f12e866912f7f3dca6e905b822ee12aaea3b3f0
- SHA512
  
  cbaf18998859fc686c87e253c71c85ccdf85e34daf05f469d7d66b550f1458528b4f30678a9118ab2d9fee0b60934427d6313905927b857f44b0653f0450da12
- SSDEEP
  
  49152:tU/5M1X4Wl/YvzYCQR9RQs+C40yZpJaD99Gn:tKq4oEa9RQs+Cn4/UKn
Score

10^/10

evasion persistence themida trojan
- Modifies visiblity of hidden/system files in Explorer
  evasion
- Identifies VirtualBox via ACPI registry values (likely anti-VM)
  evasion
- Checks BIOS information in registry
  BIOS information is often read in order to detect sandboxing environments.
- Executes dropped EXE
- 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
  evasion trojan
- Drops file in System32 directory
- Suspicious use of NtSetInformationThreadHideFromDebugger
behavioral1 behavioral2

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

Persistence

Boot or Logon Autostart Execution

Registry Run Keys / Startup Folder

Scheduled Task/Job

Privilege Escalation

Boot or Logon Autostart Execution

Registry Run Keys / Startup Folder

Scheduled Task/Job

Defense Evasion

Hide Artifacts

Hidden Files and Directories

Modify Registry

Virtualization/Sandbox Evasion

Credential Access

Discovery

Query Registry

System Information Discovery

Virtualization/Sandbox Evasion

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Tasks

static1

behavioral1

evasionpersistencethemidatrojan

behavioral2

evasionpersistencethemidatrojan

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