stealc | a26a85fab6ee6da15c4ca322bd4197ab0893b79edb4f20e6c9253cf68d3917c5

General

Target

a26a85fab6ee6da15c4ca322bd4197ab0893b79edb4f20e6c9253cf68d3917c5.exe
Size

1.7MB
MD5

298072f399842b6913b2125bf45ed438
SHA1

8178b3e8ffc248fa10b1b766bead57a221073f02
SHA256

a26a85fab6ee6da15c4ca322bd4197ab0893b79edb4f20e6c9253cf68d3917c5
SHA512

beed3d936c9f8047183b1afeb140be0127342f8a1a2dc7a1f9977c30bf46bd9324ced9dff111e1cd877339c027081a71b0bd341fa5b36305a4efde42aacc90fc
SSDEEP

49152:3uyYYW9Y6wRIdzyMA15+m2y1STkxnyHfeMW:KYW2RGzy3VSQxnmeMW

Score

10^/10

stealc brat defense_evasion discovery stealer

Malware Config

Extracted

Family

stealc

Botnet

brat

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

defense_evasion

Query Registry

T1012

Virtualization/Sandbox Evasion

T1497

description	ioc	Process
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	a26a85fab6ee6da15c4ca322bd4197ab0893b79edb4f20e6c9253cf68d3917c5.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	a26a85fab6ee6da15c4ca322bd4197ab0893b79edb4f20e6c9253cf68d3917c5.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	a26a85fab6ee6da15c4ca322bd4197ab0893b79edb4f20e6c9253cf68d3917c5.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.

defense_evasion

Query Registry

T1012

Virtualization/Sandbox Evasion

T1497

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2437139445-1151884604-3026847218-1000\Software\Wine	a26a85fab6ee6da15c4ca322bd4197ab0893b79edb4f20e6c9253cf68d3917c5.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
2472	a26a85fab6ee6da15c4ca322bd4197ab0893b79edb4f20e6c9253cf68d3917c5.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
228	2472	WerFault.exe	82

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	a26a85fab6ee6da15c4ca322bd4197ab0893b79edb4f20e6c9253cf68d3917c5.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	a26a85fab6ee6da15c4ca322bd4197ab0893b79edb4f20e6c9253cf68d3917c5.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	a26a85fab6ee6da15c4ca322bd4197ab0893b79edb4f20e6c9253cf68d3917c5.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
2472	a26a85fab6ee6da15c4ca322bd4197ab0893b79edb4f20e6c9253cf68d3917c5.exe
2472	a26a85fab6ee6da15c4ca322bd4197ab0893b79edb4f20e6c9253cf68d3917c5.exe
2472	a26a85fab6ee6da15c4ca322bd4197ab0893b79edb4f20e6c9253cf68d3917c5.exe
2472	a26a85fab6ee6da15c4ca322bd4197ab0893b79edb4f20e6c9253cf68d3917c5.exe

C:\Users\Admin\AppData\Local\Temp\a26a85fab6ee6da15c4ca322bd4197ab0893b79edb4f20e6c9253cf68d3917c5.exe
"C:\Users\Admin\AppData\Local\Temp\a26a85fab6ee6da15c4ca322bd4197ab0893b79edb4f20e6c9253cf68d3917c5.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:2472
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2472 -s 1492
  2⤵
  - Program crash
  PID:228

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 368 -p 2472 -ip 2472
1⤵
PID:772

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/2472-0-0x0000000000EC0000-0x0000000001554000-memory.dmp

Filesize
6.6MB

Download
memory/2472-1-0x00000000777C4000-0x00000000777C6000-memory.dmp

Filesize
8KB

Download
memory/2472-2-0x0000000000EC1000-0x0000000000ED8000-memory.dmp

Filesize
92KB

Download
memory/2472-3-0x0000000000EC0000-0x0000000001554000-memory.dmp

Filesize
6.6MB

Download
memory/2472-4-0x0000000000EC0000-0x0000000001554000-memory.dmp

Filesize
6.6MB

Download
memory/2472-5-0x0000000000EC0000-0x0000000001554000-memory.dmp

Filesize
6.6MB

Download
memory/2472-6-0x0000000000EC0000-0x0000000001554000-memory.dmp

Filesize
6.6MB

Download
memory/2472-7-0x0000000000EC0000-0x0000000001554000-memory.dmp

Filesize
6.6MB

Download
memory/2472-8-0x0000000000EC0000-0x0000000001554000-memory.dmp

Filesize
6.6MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads