stealc | b98005ba49c3d5ad4576b26f12dd16f4bf860f253f7c9f6e7eabbd0842ef4cd1

General

Target

b98005ba49c3d5ad4576b26f12dd16f4bf860f253f7c9f6e7eabbd0842ef4cd1.exe
Size

4.9MB
MD5

d43657f2c89c01967280fe9f9e87e10c
SHA1

9698fd6cd6aeccd56fcb403e47a222b7a30c5027
SHA256

b98005ba49c3d5ad4576b26f12dd16f4bf860f253f7c9f6e7eabbd0842ef4cd1
SHA512

b4d720e93a1ba67e08d06c5bedcd5de3d587dae9df29f41afcfaf2608bc87b917b599887fd1ea67ff3c7150abaec023b5e46bb5e4144db952233c063ca3fa29e
SSDEEP

49152:0xIjJiylyln4/Q/8H2FGVUQvh9RpkF+Oj4+3+LEFEmAUMVR:OI1iylyln4/88H2FGVUQJ9Anj53GSU

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__	b98005ba49c3d5ad4576b26f12dd16f4bf860f253f7c9f6e7eabbd0842ef4cd1.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	b98005ba49c3d5ad4576b26f12dd16f4bf860f253f7c9f6e7eabbd0842ef4cd1.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	b98005ba49c3d5ad4576b26f12dd16f4bf860f253f7c9f6e7eabbd0842ef4cd1.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-1-5-21-312935884-697965778-3955649944-1000\Software\Wine	b98005ba49c3d5ad4576b26f12dd16f4bf860f253f7c9f6e7eabbd0842ef4cd1.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
2508	b98005ba49c3d5ad4576b26f12dd16f4bf860f253f7c9f6e7eabbd0842ef4cd1.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
2592	2508	WerFault.exe	29

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	b98005ba49c3d5ad4576b26f12dd16f4bf860f253f7c9f6e7eabbd0842ef4cd1.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	b98005ba49c3d5ad4576b26f12dd16f4bf860f253f7c9f6e7eabbd0842ef4cd1.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	b98005ba49c3d5ad4576b26f12dd16f4bf860f253f7c9f6e7eabbd0842ef4cd1.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2508	b98005ba49c3d5ad4576b26f12dd16f4bf860f253f7c9f6e7eabbd0842ef4cd1.exe
2508	b98005ba49c3d5ad4576b26f12dd16f4bf860f253f7c9f6e7eabbd0842ef4cd1.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2508 wrote to memory of 2592	2508	b98005ba49c3d5ad4576b26f12dd16f4bf860f253f7c9f6e7eabbd0842ef4cd1.exe	32
PID 2508 wrote to memory of 2592	2508	b98005ba49c3d5ad4576b26f12dd16f4bf860f253f7c9f6e7eabbd0842ef4cd1.exe	32
PID 2508 wrote to memory of 2592	2508	b98005ba49c3d5ad4576b26f12dd16f4bf860f253f7c9f6e7eabbd0842ef4cd1.exe	32
PID 2508 wrote to memory of 2592	2508	b98005ba49c3d5ad4576b26f12dd16f4bf860f253f7c9f6e7eabbd0842ef4cd1.exe	32

C:\Users\Admin\AppData\Local\Temp\b98005ba49c3d5ad4576b26f12dd16f4bf860f253f7c9f6e7eabbd0842ef4cd1.exe
"C:\Users\Admin\AppData\Local\Temp\b98005ba49c3d5ad4576b26f12dd16f4bf860f253f7c9f6e7eabbd0842ef4cd1.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:2508
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2508 -s 936
  2⤵
  - Program crash
  PID:2592

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

Replay Monitor

Loading Replay Monitor...

Downloads

memory/2508-0-0x00000000000A0000-0x0000000000593000-memory.dmp

Filesize
4.9MB

Download
memory/2508-1-0x00000000773D0000-0x00000000773D2000-memory.dmp

Filesize
8KB

Download
memory/2508-2-0x00000000000A1000-0x00000000002EA000-memory.dmp

Filesize
2.3MB

Download
memory/2508-3-0x00000000000A0000-0x0000000000593000-memory.dmp

Filesize
4.9MB

Download
memory/2508-4-0x00000000000A0000-0x0000000000593000-memory.dmp

Filesize
4.9MB

Download
memory/2508-5-0x00000000000A1000-0x00000000002EA000-memory.dmp

Filesize
2.3MB

Download
memory/2508-6-0x00000000000A0000-0x0000000000593000-memory.dmp

Filesize
4.9MB

Download
memory/2508-7-0x00000000000A0000-0x0000000000593000-memory.dmp

Filesize
4.9MB

Download
memory/2508-8-0x00000000000A0000-0x0000000000593000-memory.dmp

Filesize
4.9MB

Download
memory/2508-9-0x00000000000A0000-0x0000000000593000-memory.dmp

Filesize
4.9MB

Download
memory/2508-10-0x00000000000A0000-0x0000000000593000-memory.dmp

Filesize
4.9MB

Download
memory/2508-11-0x00000000000A0000-0x0000000000593000-memory.dmp

Filesize
4.9MB

Download
memory/2508-12-0x00000000000A0000-0x0000000000593000-memory.dmp

Filesize
4.9MB

Download
memory/2508-13-0x00000000000A1000-0x00000000002EA000-memory.dmp

Filesize
2.3MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads