stealc | 61190c99bafae4a9cf90bac8d5b6658438fb838526b13a5a61283c550f849658

General

Target

61190c99bafae4a9cf90bac8d5b6658438fb838526b13a5a61283c550f849658.exe
Size

2.8MB
MD5

3e118a7f3395ee4d0d4ca131ca3847bb
SHA1

91616b7d42259a58b2766306dddb53b4910b23b0
SHA256

61190c99bafae4a9cf90bac8d5b6658438fb838526b13a5a61283c550f849658
SHA512

ee3718a6e2199903147e05dd2ac2e844843310c59a46d1c96fd0443effd32ff562dc589cd42a05fa13120ad9c60a9de62ff02c243096e2970dc3f349cdef5de4
SSDEEP

49152:Fs9t+v6ZgxSYOJsjWascaznymrLXCkufpZCVE0rrucnTBMCJ:Fs9c6g0YOJCWtc8nyhkwZgycnTBM

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__	61190c99bafae4a9cf90bac8d5b6658438fb838526b13a5a61283c550f849658.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	61190c99bafae4a9cf90bac8d5b6658438fb838526b13a5a61283c550f849658.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	61190c99bafae4a9cf90bac8d5b6658438fb838526b13a5a61283c550f849658.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-1-5-21-1846800975-3917212583-2893086201-1000\Software\Wine	61190c99bafae4a9cf90bac8d5b6658438fb838526b13a5a61283c550f849658.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
2084	61190c99bafae4a9cf90bac8d5b6658438fb838526b13a5a61283c550f849658.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
2648	2084	WerFault.exe	30

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	61190c99bafae4a9cf90bac8d5b6658438fb838526b13a5a61283c550f849658.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	61190c99bafae4a9cf90bac8d5b6658438fb838526b13a5a61283c550f849658.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	61190c99bafae4a9cf90bac8d5b6658438fb838526b13a5a61283c550f849658.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2084	61190c99bafae4a9cf90bac8d5b6658438fb838526b13a5a61283c550f849658.exe
2084	61190c99bafae4a9cf90bac8d5b6658438fb838526b13a5a61283c550f849658.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2084 wrote to memory of 2648	2084	61190c99bafae4a9cf90bac8d5b6658438fb838526b13a5a61283c550f849658.exe	32
PID 2084 wrote to memory of 2648	2084	61190c99bafae4a9cf90bac8d5b6658438fb838526b13a5a61283c550f849658.exe	32
PID 2084 wrote to memory of 2648	2084	61190c99bafae4a9cf90bac8d5b6658438fb838526b13a5a61283c550f849658.exe	32
PID 2084 wrote to memory of 2648	2084	61190c99bafae4a9cf90bac8d5b6658438fb838526b13a5a61283c550f849658.exe	32

C:\Users\Admin\AppData\Local\Temp\61190c99bafae4a9cf90bac8d5b6658438fb838526b13a5a61283c550f849658.exe
"C:\Users\Admin\AppData\Local\Temp\61190c99bafae4a9cf90bac8d5b6658438fb838526b13a5a61283c550f849658.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:2084
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2084 -s 932
  2⤵
  - Program crash
  PID:2648

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/2084-0-0x0000000001080000-0x000000000157A000-memory.dmp

Filesize
5.0MB

Download
memory/2084-1-0x0000000077C70000-0x0000000077C72000-memory.dmp

Filesize
8KB

Download
memory/2084-2-0x0000000001081000-0x0000000001098000-memory.dmp

Filesize
92KB

Download
memory/2084-3-0x0000000001080000-0x000000000157A000-memory.dmp

Filesize
5.0MB

Download
memory/2084-4-0x0000000001080000-0x000000000157A000-memory.dmp

Filesize
5.0MB

Download
memory/2084-5-0x0000000001080000-0x000000000157A000-memory.dmp

Filesize
5.0MB

Download
memory/2084-6-0x0000000001080000-0x000000000157A000-memory.dmp

Filesize
5.0MB

Download
memory/2084-7-0x0000000001080000-0x000000000157A000-memory.dmp

Filesize
5.0MB

Download
memory/2084-8-0x0000000001080000-0x000000000157A000-memory.dmp

Filesize
5.0MB

Download
memory/2084-9-0x0000000001080000-0x000000000157A000-memory.dmp

Filesize
5.0MB

Download
memory/2084-10-0x0000000001080000-0x000000000157A000-memory.dmp

Filesize
5.0MB

Download
memory/2084-11-0x0000000001080000-0x000000000157A000-memory.dmp

Filesize
5.0MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads