stealc | 2f7c8b63603fe0ed3f601d761273c942ee7f653d99e877de523f510a00d2a519

General

Target

2f7c8b63603fe0ed3f601d761273c942ee7f653d99e877de523f510a00d2a519.exe
Size

4.9MB
MD5

60f731b97a2421dea30691441f641be7
SHA1

aae49838c624586bdc28c6f53aa3a65c6299ec98
SHA256

2f7c8b63603fe0ed3f601d761273c942ee7f653d99e877de523f510a00d2a519
SHA512

ada50d8202770752edf857c8957618cc8780a9682f19e67c498dad10c1729a3794c641ec806688ae1225ef70760e0b1f11cbbc7bfe39ee1e40b8130a5b325342
SSDEEP

49152:FQf/3MlgjnOsvSxsNVY7kMowHpAijto6gLayJuWIIygG:G3ManOsvSSNVY7kgJRtQRVv

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__	2f7c8b63603fe0ed3f601d761273c942ee7f653d99e877de523f510a00d2a519.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	2f7c8b63603fe0ed3f601d761273c942ee7f653d99e877de523f510a00d2a519.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	2f7c8b63603fe0ed3f601d761273c942ee7f653d99e877de523f510a00d2a519.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-1-5-21-2872745919-2748461613-2989606286-1000\Software\Wine	2f7c8b63603fe0ed3f601d761273c942ee7f653d99e877de523f510a00d2a519.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
2520	2f7c8b63603fe0ed3f601d761273c942ee7f653d99e877de523f510a00d2a519.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
2588	2520	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	2f7c8b63603fe0ed3f601d761273c942ee7f653d99e877de523f510a00d2a519.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	2f7c8b63603fe0ed3f601d761273c942ee7f653d99e877de523f510a00d2a519.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	2f7c8b63603fe0ed3f601d761273c942ee7f653d99e877de523f510a00d2a519.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2520	2f7c8b63603fe0ed3f601d761273c942ee7f653d99e877de523f510a00d2a519.exe
2520	2f7c8b63603fe0ed3f601d761273c942ee7f653d99e877de523f510a00d2a519.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2520 wrote to memory of 2588	2520	2f7c8b63603fe0ed3f601d761273c942ee7f653d99e877de523f510a00d2a519.exe	32
PID 2520 wrote to memory of 2588	2520	2f7c8b63603fe0ed3f601d761273c942ee7f653d99e877de523f510a00d2a519.exe	32
PID 2520 wrote to memory of 2588	2520	2f7c8b63603fe0ed3f601d761273c942ee7f653d99e877de523f510a00d2a519.exe	32
PID 2520 wrote to memory of 2588	2520	2f7c8b63603fe0ed3f601d761273c942ee7f653d99e877de523f510a00d2a519.exe	32

C:\Users\Admin\AppData\Local\Temp\2f7c8b63603fe0ed3f601d761273c942ee7f653d99e877de523f510a00d2a519.exe
"C:\Users\Admin\AppData\Local\Temp\2f7c8b63603fe0ed3f601d761273c942ee7f653d99e877de523f510a00d2a519.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:2520
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2520 -s 932
  2⤵
  - Program crash
  PID:2588

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/2520-0-0x00000000008F0000-0x0000000000DE5000-memory.dmp

Filesize
5.0MB

Download
memory/2520-1-0x00000000770A0000-0x00000000770A2000-memory.dmp

Filesize
8KB

Download
memory/2520-2-0x00000000008F1000-0x0000000000B3A000-memory.dmp

Filesize
2.3MB

Download
memory/2520-3-0x00000000008F0000-0x0000000000DE5000-memory.dmp

Filesize
5.0MB

Download
memory/2520-4-0x00000000008F0000-0x0000000000DE5000-memory.dmp

Filesize
5.0MB

Download
memory/2520-5-0x00000000008F1000-0x0000000000B3A000-memory.dmp

Filesize
2.3MB

Download
memory/2520-6-0x00000000008F0000-0x0000000000DE5000-memory.dmp

Filesize
5.0MB

Download
memory/2520-7-0x00000000008F0000-0x0000000000DE5000-memory.dmp

Filesize
5.0MB

Download
memory/2520-8-0x00000000008F0000-0x0000000000DE5000-memory.dmp

Filesize
5.0MB

Download
memory/2520-9-0x00000000008F0000-0x0000000000DE5000-memory.dmp

Filesize
5.0MB

Download
memory/2520-10-0x00000000008F0000-0x0000000000DE5000-memory.dmp

Filesize
5.0MB

Download
memory/2520-11-0x00000000008F0000-0x0000000000DE5000-memory.dmp

Filesize
5.0MB

Download
memory/2520-12-0x00000000008F0000-0x0000000000DE5000-memory.dmp

Filesize
5.0MB

Download
memory/2520-13-0x00000000008F1000-0x0000000000B3A000-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