stealc | 237576083da55ceb35c44b77a6c119079fd06520b99796ff7d12a439419dcb7e

General

Target

237576083da55ceb35c44b77a6c119079fd06520b99796ff7d12a439419dcb7e.exe
Size

5.0MB
MD5

0ea4e01d7d8c8f51f3cd5f7b42d62694
SHA1

f10e6af79ff9612f5ced5b1aa05f33a498a66104
SHA256

237576083da55ceb35c44b77a6c119079fd06520b99796ff7d12a439419dcb7e
SHA512

571ddf779dbdc633aac9cad04e8600993f8ecd1878369ee9b20254be4d92c2cbcb0bac387f79180bdeb7dd5ab0242ba0c5ebf46ba2a8b6ec1a73b26c7631df4f
SSDEEP

98304:SGhhhhThhhhhhhh8hhhhhhhhhRhhjqCzXXwNgELuNyVFeLBP5:S3F66ueLx

Score

10^/10

stealc stok discovery evasion stealer

Malware Config

Extracted

Family

stealc

Botnet

stok

C2

http://185.215.113.206

Attributes

url_path
/c4becf79229cb002.php

Signatures

Stealc
Stealc is an infostealer written in C++.
stealer stealc
Stealc family
stealc

Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs 1 IoCs

evasion

Query Registry

T1012

Virtualization/Sandbox Evasion

T1497

description	ioc	Process
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	237576083da55ceb35c44b77a6c119079fd06520b99796ff7d12a439419dcb7e.exe

Checks BIOS information in registry 2 TTPs 2 IoCs

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

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	237576083da55ceb35c44b77a6c119079fd06520b99796ff7d12a439419dcb7e.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	237576083da55ceb35c44b77a6c119079fd06520b99796ff7d12a439419dcb7e.exe

Identifies Wine through registry keys 2 TTPs 1 IoCs

Wine is a compatibility layer capable of running Windows applications, which can be used as sandboxing environment.

evasion

Query Registry

T1012

Virtualization/Sandbox Evasion

T1497

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2703099537-420551529-3771253338-1000\Software\Wine	237576083da55ceb35c44b77a6c119079fd06520b99796ff7d12a439419dcb7e.exe

Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
discovery

Query Registry
T1012

Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs

pid	Process
1164	237576083da55ceb35c44b77a6c119079fd06520b99796ff7d12a439419dcb7e.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
1228	1164	WerFault.exe	28

System Location Discovery: System Language Discovery 1 TTPs 1 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	237576083da55ceb35c44b77a6c119079fd06520b99796ff7d12a439419dcb7e.exe

Checks processor information in registry 2 TTPs 2 IoCs

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

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	237576083da55ceb35c44b77a6c119079fd06520b99796ff7d12a439419dcb7e.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	237576083da55ceb35c44b77a6c119079fd06520b99796ff7d12a439419dcb7e.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
1164	237576083da55ceb35c44b77a6c119079fd06520b99796ff7d12a439419dcb7e.exe
1164	237576083da55ceb35c44b77a6c119079fd06520b99796ff7d12a439419dcb7e.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 1164 wrote to memory of 1228	1164	237576083da55ceb35c44b77a6c119079fd06520b99796ff7d12a439419dcb7e.exe	30
PID 1164 wrote to memory of 1228	1164	237576083da55ceb35c44b77a6c119079fd06520b99796ff7d12a439419dcb7e.exe	30
PID 1164 wrote to memory of 1228	1164	237576083da55ceb35c44b77a6c119079fd06520b99796ff7d12a439419dcb7e.exe	30
PID 1164 wrote to memory of 1228	1164	237576083da55ceb35c44b77a6c119079fd06520b99796ff7d12a439419dcb7e.exe	30

C:\Users\Admin\AppData\Local\Temp\237576083da55ceb35c44b77a6c119079fd06520b99796ff7d12a439419dcb7e.exe
"C:\Users\Admin\AppData\Local\Temp\237576083da55ceb35c44b77a6c119079fd06520b99796ff7d12a439419dcb7e.exe"
1⤵
- Identifies VirtualBox via ACPI registry values (likely anti-VM)
- Checks BIOS information in registry
- Identifies Wine through registry keys
- Suspicious use of NtSetInformationThreadHideFromDebugger
- System Location Discovery: System Language Discovery
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:1164
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1164 -s 920
  2⤵
  - Program crash
  PID:1228

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Virtualization/Sandbox Evasion

2

T1497

Credential Access

Discovery

Query Registry

5

T1012

System Information Discovery

2

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Virtualization/Sandbox Evasion

2

T1497

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/1164-0-0x0000000000FE0000-0x00000000014E8000-memory.dmp

Filesize
5.0MB

Download
memory/1164-1-0x0000000077DD0000-0x0000000077DD2000-memory.dmp

Filesize
8KB

Download
memory/1164-2-0x0000000000FE1000-0x000000000122A000-memory.dmp

Filesize
2.3MB

Download
memory/1164-3-0x0000000000FE0000-0x00000000014E8000-memory.dmp

Filesize
5.0MB

Download
memory/1164-4-0x0000000000FE0000-0x00000000014E8000-memory.dmp

Filesize
5.0MB

Download
memory/1164-5-0x0000000000FE1000-0x000000000122A000-memory.dmp

Filesize
2.3MB

Download
memory/1164-6-0x0000000000FE0000-0x00000000014E8000-memory.dmp

Filesize
5.0MB

Download
memory/1164-7-0x0000000000FE0000-0x00000000014E8000-memory.dmp

Filesize
5.0MB

Download
memory/1164-8-0x0000000000FE0000-0x00000000014E8000-memory.dmp

Filesize
5.0MB

Download
memory/1164-9-0x0000000000FE0000-0x00000000014E8000-memory.dmp

Filesize
5.0MB

Download
memory/1164-10-0x0000000000FE0000-0x00000000014E8000-memory.dmp

Filesize
5.0MB

Download
memory/1164-11-0x0000000000FE0000-0x00000000014E8000-memory.dmp

Filesize
5.0MB

Download
memory/1164-12-0x0000000000FE0000-0x00000000014E8000-memory.dmp

Filesize
5.0MB

Download
memory/1164-13-0x0000000000FE1000-0x000000000122A000-memory.dmp

Filesize
2.3MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads