stealc | 5ffb2e33be22c35585ffe74f82986dcd542e9b89fdc9e0e9243c804f17c32521

General

Target

5ffb2e33be22c35585ffe74f82986dcd542e9b89fdc9e0e9243c804f17c32521.exe
Size

2.7MB
MD5

d7593c78ec8bf3f98603559b67cb3ccd
SHA1

4db5fb73dfc7d2067058437eb1e8b6d8da90f742
SHA256

5ffb2e33be22c35585ffe74f82986dcd542e9b89fdc9e0e9243c804f17c32521
SHA512

69b1b4c1d2691a3fa85d6e04557761b28d8c0f57c1db5f4500a7166717323b1920a429e4c700dca6b5c0badeb40023bb1dfbcbed20040c72b185e0aaba0c8f1a
SSDEEP

24576:nJk3pTsMXL4bn2uKL29RiU0SMW/N90YZBS9+iXQIjXPY/hVWHaD6M4DbmXm7e50K:nJaCn+6HxPi9+iXPXIluDbmX70eHd+8

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__	5ffb2e33be22c35585ffe74f82986dcd542e9b89fdc9e0e9243c804f17c32521.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	5ffb2e33be22c35585ffe74f82986dcd542e9b89fdc9e0e9243c804f17c32521.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	5ffb2e33be22c35585ffe74f82986dcd542e9b89fdc9e0e9243c804f17c32521.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-1-5-21-1488793075-819845221-1497111674-1000\Software\Wine	5ffb2e33be22c35585ffe74f82986dcd542e9b89fdc9e0e9243c804f17c32521.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
540	5ffb2e33be22c35585ffe74f82986dcd542e9b89fdc9e0e9243c804f17c32521.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
2532	540	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	5ffb2e33be22c35585ffe74f82986dcd542e9b89fdc9e0e9243c804f17c32521.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	5ffb2e33be22c35585ffe74f82986dcd542e9b89fdc9e0e9243c804f17c32521.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	5ffb2e33be22c35585ffe74f82986dcd542e9b89fdc9e0e9243c804f17c32521.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
540	5ffb2e33be22c35585ffe74f82986dcd542e9b89fdc9e0e9243c804f17c32521.exe
540	5ffb2e33be22c35585ffe74f82986dcd542e9b89fdc9e0e9243c804f17c32521.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 540 wrote to memory of 2532	540	5ffb2e33be22c35585ffe74f82986dcd542e9b89fdc9e0e9243c804f17c32521.exe	32
PID 540 wrote to memory of 2532	540	5ffb2e33be22c35585ffe74f82986dcd542e9b89fdc9e0e9243c804f17c32521.exe	32
PID 540 wrote to memory of 2532	540	5ffb2e33be22c35585ffe74f82986dcd542e9b89fdc9e0e9243c804f17c32521.exe	32
PID 540 wrote to memory of 2532	540	5ffb2e33be22c35585ffe74f82986dcd542e9b89fdc9e0e9243c804f17c32521.exe	32

C:\Users\Admin\AppData\Local\Temp\5ffb2e33be22c35585ffe74f82986dcd542e9b89fdc9e0e9243c804f17c32521.exe
"C:\Users\Admin\AppData\Local\Temp\5ffb2e33be22c35585ffe74f82986dcd542e9b89fdc9e0e9243c804f17c32521.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:540
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 540 -s 912
  2⤵
  - Program crash
  PID:2532

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/540-0-0x0000000000910000-0x0000000000DF9000-memory.dmp

Filesize
4.9MB

Download
memory/540-1-0x0000000077320000-0x0000000077322000-memory.dmp

Filesize
8KB

Download
memory/540-2-0x0000000000911000-0x0000000000928000-memory.dmp

Filesize
92KB

Download
memory/540-3-0x0000000000910000-0x0000000000DF9000-memory.dmp

Filesize
4.9MB

Download
memory/540-4-0x0000000000910000-0x0000000000DF9000-memory.dmp

Filesize
4.9MB

Download
memory/540-5-0x0000000000910000-0x0000000000DF9000-memory.dmp

Filesize
4.9MB

Download
memory/540-6-0x0000000000910000-0x0000000000DF9000-memory.dmp

Filesize
4.9MB

Download
memory/540-7-0x0000000000910000-0x0000000000DF9000-memory.dmp

Filesize
4.9MB

Download
memory/540-8-0x0000000000910000-0x0000000000DF9000-memory.dmp

Filesize
4.9MB

Download
memory/540-9-0x0000000000910000-0x0000000000DF9000-memory.dmp

Filesize
4.9MB

Download
memory/540-10-0x0000000000910000-0x0000000000DF9000-memory.dmp

Filesize
4.9MB

Download
memory/540-11-0x0000000000910000-0x0000000000DF9000-memory.dmp

Filesize
4.9MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads