stealc | 5c26d4444e2bb551bb131508e96e8deacb4e63fc67c23b9349831b66d60863f6

General

Target

5c26d4444e2bb551bb131508e96e8deacb4e63fc67c23b9349831b66d60863f6.exe
Size

1.7MB
MD5

7c6aaebcd3a6bd3573bfb028561792f5
SHA1

ff5c829dc55fc93598f30368f3926f1e4fbcb170
SHA256

5c26d4444e2bb551bb131508e96e8deacb4e63fc67c23b9349831b66d60863f6
SHA512

a34ffec3999218fc3824c42ff0bc053ba4b3635aa3f89f4cd1a7dc48ff0c2b93c08a6e082e298c3e2f64268daf8edfae5cb3934e5506d96293fee79f87140da4
SSDEEP

49152:8UGTSncsebCuXVvonmNTMjJXclNbkB9Jr:8UGuevomSjNEc9

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__	5c26d4444e2bb551bb131508e96e8deacb4e63fc67c23b9349831b66d60863f6.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	5c26d4444e2bb551bb131508e96e8deacb4e63fc67c23b9349831b66d60863f6.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	5c26d4444e2bb551bb131508e96e8deacb4e63fc67c23b9349831b66d60863f6.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-1-5-21-2039016743-699959520-214465309-1000\Software\Wine	5c26d4444e2bb551bb131508e96e8deacb4e63fc67c23b9349831b66d60863f6.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
1604	5c26d4444e2bb551bb131508e96e8deacb4e63fc67c23b9349831b66d60863f6.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
2148	1604	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	5c26d4444e2bb551bb131508e96e8deacb4e63fc67c23b9349831b66d60863f6.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	5c26d4444e2bb551bb131508e96e8deacb4e63fc67c23b9349831b66d60863f6.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	5c26d4444e2bb551bb131508e96e8deacb4e63fc67c23b9349831b66d60863f6.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
1604	5c26d4444e2bb551bb131508e96e8deacb4e63fc67c23b9349831b66d60863f6.exe
1604	5c26d4444e2bb551bb131508e96e8deacb4e63fc67c23b9349831b66d60863f6.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 1604 wrote to memory of 2148	1604	5c26d4444e2bb551bb131508e96e8deacb4e63fc67c23b9349831b66d60863f6.exe	32
PID 1604 wrote to memory of 2148	1604	5c26d4444e2bb551bb131508e96e8deacb4e63fc67c23b9349831b66d60863f6.exe	32
PID 1604 wrote to memory of 2148	1604	5c26d4444e2bb551bb131508e96e8deacb4e63fc67c23b9349831b66d60863f6.exe	32
PID 1604 wrote to memory of 2148	1604	5c26d4444e2bb551bb131508e96e8deacb4e63fc67c23b9349831b66d60863f6.exe	32

C:\Users\Admin\AppData\Local\Temp\5c26d4444e2bb551bb131508e96e8deacb4e63fc67c23b9349831b66d60863f6.exe
"C:\Users\Admin\AppData\Local\Temp\5c26d4444e2bb551bb131508e96e8deacb4e63fc67c23b9349831b66d60863f6.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:1604
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1604 -s 932
  2⤵
  - Program crash
  PID:2148

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/1604-0-0x0000000000980000-0x0000000001008000-memory.dmp

Filesize
6.5MB

Download
memory/1604-1-0x0000000077B80000-0x0000000077B82000-memory.dmp

Filesize
8KB

Download
memory/1604-2-0x0000000000981000-0x0000000000998000-memory.dmp

Filesize
92KB

Download
memory/1604-3-0x0000000000980000-0x0000000001008000-memory.dmp

Filesize
6.5MB

Download
memory/1604-4-0x0000000000980000-0x0000000001008000-memory.dmp

Filesize
6.5MB

Download
memory/1604-5-0x0000000000980000-0x0000000001008000-memory.dmp

Filesize
6.5MB

Download
memory/1604-6-0x0000000000980000-0x0000000001008000-memory.dmp

Filesize
6.5MB

Download
memory/1604-7-0x0000000000980000-0x0000000001008000-memory.dmp

Filesize
6.5MB

Download
memory/1604-8-0x0000000000980000-0x0000000001008000-memory.dmp

Filesize
6.5MB

Download
memory/1604-9-0x0000000000980000-0x0000000001008000-memory.dmp

Filesize
6.5MB

Download
memory/1604-10-0x0000000000980000-0x0000000001008000-memory.dmp

Filesize
6.5MB

Download
memory/1604-11-0x0000000000980000-0x0000000001008000-memory.dmp

Filesize
6.5MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads