stealc | a796735b2eb05d1675d8d18ac57fc4ba825f9638be260aebeae0d08db43ca7ca

General

Target

a796735b2eb05d1675d8d18ac57fc4ba825f9638be260aebeae0d08db43ca7ca.exe
Size

2.8MB
MD5

294973cc7d054c815e46463c8a810909
SHA1

68d9f661fb491b66b24c9bd728f7342d158126fc
SHA256

a796735b2eb05d1675d8d18ac57fc4ba825f9638be260aebeae0d08db43ca7ca
SHA512

1890f8f7e8d162f28acf1ab0ab46acd62469a7b0d9eceb7da56a4643a2125a0f90e3cb4d2909e5cf03dbb8815ed18dcfd6b2757a5feb388c0e535988102be372
SSDEEP

49152:xN8seEtA1y2Bmd128VsJf4QtRMK5REm1Z:38seEtA1yZf2FJf0K5as

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__	a796735b2eb05d1675d8d18ac57fc4ba825f9638be260aebeae0d08db43ca7ca.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	a796735b2eb05d1675d8d18ac57fc4ba825f9638be260aebeae0d08db43ca7ca.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	a796735b2eb05d1675d8d18ac57fc4ba825f9638be260aebeae0d08db43ca7ca.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-1-5-21-3442511616-637977696-3186306149-1000\Software\Wine	a796735b2eb05d1675d8d18ac57fc4ba825f9638be260aebeae0d08db43ca7ca.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
4556	a796735b2eb05d1675d8d18ac57fc4ba825f9638be260aebeae0d08db43ca7ca.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
2104	4556	WerFault.exe	81

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	a796735b2eb05d1675d8d18ac57fc4ba825f9638be260aebeae0d08db43ca7ca.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	a796735b2eb05d1675d8d18ac57fc4ba825f9638be260aebeae0d08db43ca7ca.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	a796735b2eb05d1675d8d18ac57fc4ba825f9638be260aebeae0d08db43ca7ca.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
4556	a796735b2eb05d1675d8d18ac57fc4ba825f9638be260aebeae0d08db43ca7ca.exe
4556	a796735b2eb05d1675d8d18ac57fc4ba825f9638be260aebeae0d08db43ca7ca.exe
4556	a796735b2eb05d1675d8d18ac57fc4ba825f9638be260aebeae0d08db43ca7ca.exe
4556	a796735b2eb05d1675d8d18ac57fc4ba825f9638be260aebeae0d08db43ca7ca.exe

C:\Users\Admin\AppData\Local\Temp\a796735b2eb05d1675d8d18ac57fc4ba825f9638be260aebeae0d08db43ca7ca.exe
"C:\Users\Admin\AppData\Local\Temp\a796735b2eb05d1675d8d18ac57fc4ba825f9638be260aebeae0d08db43ca7ca.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
PID:4556
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4556 -s 1480
  2⤵
  - Program crash
  PID:2104

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 4556 -ip 4556
1⤵
PID:3728

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/4556-0-0x0000000000410000-0x0000000000908000-memory.dmp

Filesize
5.0MB

Download
memory/4556-1-0x0000000077AA4000-0x0000000077AA6000-memory.dmp

Filesize
8KB

Download
memory/4556-2-0x0000000000411000-0x0000000000428000-memory.dmp

Filesize
92KB

Download
memory/4556-3-0x0000000000410000-0x0000000000908000-memory.dmp

Filesize
5.0MB

Download
memory/4556-4-0x0000000000410000-0x0000000000908000-memory.dmp

Filesize
5.0MB

Download
memory/4556-5-0x0000000000410000-0x0000000000908000-memory.dmp

Filesize
5.0MB

Download
memory/4556-6-0x0000000000410000-0x0000000000908000-memory.dmp

Filesize
5.0MB

Download
memory/4556-7-0x0000000000410000-0x0000000000908000-memory.dmp

Filesize
5.0MB

Download
memory/4556-8-0x0000000000410000-0x0000000000908000-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