stealc | e1551f5a66e2897f127feed54b99a7cbfd95469e51d7c42e54f8d9e07ff4c97b

General

Target

e1551f5a66e2897f127feed54b99a7cbfd95469e51d7c42e54f8d9e07ff4c97b.exe
Size

1.8MB
MD5

5d9f8774380f3689ca56d2361894646e
SHA1

e787316646aec34d4cecc2d3d1e2f8d86b0e492e
SHA256

e1551f5a66e2897f127feed54b99a7cbfd95469e51d7c42e54f8d9e07ff4c97b
SHA512

923941469d9e7a2b8471dc4a55f0e27d45ceefa94854ddd3c88dbb210ecfbafca82985c7c0a0f2ac4dd8923d5ca1e6b2a2f7757ee135ab4629ecab931a7b7d37
SSDEEP

49152:l+gEL86bdr4b+UegkQ0jV4+ALujQXfPNk9FB5VPw:l+L8qZ4b+UiQ0B4bLukXfPMB3

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__	e1551f5a66e2897f127feed54b99a7cbfd95469e51d7c42e54f8d9e07ff4c97b.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	e1551f5a66e2897f127feed54b99a7cbfd95469e51d7c42e54f8d9e07ff4c97b.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	e1551f5a66e2897f127feed54b99a7cbfd95469e51d7c42e54f8d9e07ff4c97b.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-1-5-21-4050598569-1597076380-177084960-1000\Software\Wine	e1551f5a66e2897f127feed54b99a7cbfd95469e51d7c42e54f8d9e07ff4c97b.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
1852	e1551f5a66e2897f127feed54b99a7cbfd95469e51d7c42e54f8d9e07ff4c97b.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
5088	1852	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	e1551f5a66e2897f127feed54b99a7cbfd95469e51d7c42e54f8d9e07ff4c97b.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 value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	e1551f5a66e2897f127feed54b99a7cbfd95469e51d7c42e54f8d9e07ff4c97b.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	e1551f5a66e2897f127feed54b99a7cbfd95469e51d7c42e54f8d9e07ff4c97b.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
1852	e1551f5a66e2897f127feed54b99a7cbfd95469e51d7c42e54f8d9e07ff4c97b.exe
1852	e1551f5a66e2897f127feed54b99a7cbfd95469e51d7c42e54f8d9e07ff4c97b.exe
1852	e1551f5a66e2897f127feed54b99a7cbfd95469e51d7c42e54f8d9e07ff4c97b.exe
1852	e1551f5a66e2897f127feed54b99a7cbfd95469e51d7c42e54f8d9e07ff4c97b.exe

C:\Users\Admin\AppData\Local\Temp\e1551f5a66e2897f127feed54b99a7cbfd95469e51d7c42e54f8d9e07ff4c97b.exe
"C:\Users\Admin\AppData\Local\Temp\e1551f5a66e2897f127feed54b99a7cbfd95469e51d7c42e54f8d9e07ff4c97b.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:1852
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1852 -s 1488
  2⤵
  - Program crash
  PID:5088

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 416 -p 1852 -ip 1852
1⤵
PID:836

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/1852-0-0x00000000001C0000-0x000000000086B000-memory.dmp

Filesize
6.7MB

Download
memory/1852-1-0x0000000077D84000-0x0000000077D86000-memory.dmp

Filesize
8KB

Download
memory/1852-2-0x00000000001C1000-0x00000000001D8000-memory.dmp

Filesize
92KB

Download
memory/1852-3-0x00000000001C0000-0x000000000086B000-memory.dmp

Filesize
6.7MB

Download
memory/1852-4-0x00000000001C0000-0x000000000086B000-memory.dmp

Filesize
6.7MB

Download
memory/1852-5-0x00000000001C0000-0x000000000086B000-memory.dmp

Filesize
6.7MB

Download
memory/1852-6-0x00000000001C0000-0x000000000086B000-memory.dmp

Filesize
6.7MB

Download
memory/1852-7-0x00000000001C0000-0x000000000086B000-memory.dmp

Filesize
6.7MB

Download
memory/1852-8-0x00000000001C0000-0x000000000086B000-memory.dmp

Filesize
6.7MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads