stealc | 020aa125186dc3997ed9fe6c16a1779662444e2eb74bf85a93d346a4d8c3f1bd

General

Target

020aa125186dc3997ed9fe6c16a1779662444e2eb74bf85a93d346a4d8c3f1bd.exe
Size

1.7MB
MD5

e0f6268cf0818db910969f6288089f34
SHA1

49bb66a98d4ec8e1f21c00d141a4d4818ffeb15c
SHA256

020aa125186dc3997ed9fe6c16a1779662444e2eb74bf85a93d346a4d8c3f1bd
SHA512

d79472b428b45a7496ad41e9cdc049e9d1312f5d6b8b7b17eaa7f315068f6e717514d2b672c6b0e141445230edde7075fba31a12c4d4f9a5887885c7c822a3bb
SSDEEP

49152:RjNI8QUJLnyPuDCU1PdYMhOKpm8HlB5ltc:r1ntDX5dYMhxhLrt

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__	020aa125186dc3997ed9fe6c16a1779662444e2eb74bf85a93d346a4d8c3f1bd.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	020aa125186dc3997ed9fe6c16a1779662444e2eb74bf85a93d346a4d8c3f1bd.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	020aa125186dc3997ed9fe6c16a1779662444e2eb74bf85a93d346a4d8c3f1bd.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-1-5-21-493223053-2004649691-1575712786-1000\Software\Wine	020aa125186dc3997ed9fe6c16a1779662444e2eb74bf85a93d346a4d8c3f1bd.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
3944	020aa125186dc3997ed9fe6c16a1779662444e2eb74bf85a93d346a4d8c3f1bd.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
620	3944	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	020aa125186dc3997ed9fe6c16a1779662444e2eb74bf85a93d346a4d8c3f1bd.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	020aa125186dc3997ed9fe6c16a1779662444e2eb74bf85a93d346a4d8c3f1bd.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	020aa125186dc3997ed9fe6c16a1779662444e2eb74bf85a93d346a4d8c3f1bd.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
3944	020aa125186dc3997ed9fe6c16a1779662444e2eb74bf85a93d346a4d8c3f1bd.exe
3944	020aa125186dc3997ed9fe6c16a1779662444e2eb74bf85a93d346a4d8c3f1bd.exe
3944	020aa125186dc3997ed9fe6c16a1779662444e2eb74bf85a93d346a4d8c3f1bd.exe
3944	020aa125186dc3997ed9fe6c16a1779662444e2eb74bf85a93d346a4d8c3f1bd.exe

C:\Users\Admin\AppData\Local\Temp\020aa125186dc3997ed9fe6c16a1779662444e2eb74bf85a93d346a4d8c3f1bd.exe
"C:\Users\Admin\AppData\Local\Temp\020aa125186dc3997ed9fe6c16a1779662444e2eb74bf85a93d346a4d8c3f1bd.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:3944
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3944 -s 1492
  2⤵
  - Program crash
  PID:620

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 3944 -ip 3944
1⤵
PID:1892

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

Replay Monitor

Loading Replay Monitor...

Downloads

memory/3944-0-0x0000000000330000-0x00000000009B4000-memory.dmp

Filesize
6.5MB

Download
memory/3944-1-0x0000000077124000-0x0000000077126000-memory.dmp

Filesize
8KB

Download
memory/3944-2-0x0000000000331000-0x0000000000348000-memory.dmp

Filesize
92KB

Download
memory/3944-3-0x0000000000330000-0x00000000009B4000-memory.dmp

Filesize
6.5MB

Download
memory/3944-4-0x0000000000330000-0x00000000009B4000-memory.dmp

Filesize
6.5MB

Download
memory/3944-5-0x0000000000330000-0x00000000009B4000-memory.dmp

Filesize
6.5MB

Download
memory/3944-6-0x0000000000330000-0x00000000009B4000-memory.dmp

Filesize
6.5MB

Download
memory/3944-7-0x0000000000330000-0x00000000009B4000-memory.dmp

Filesize
6.5MB

Download
memory/3944-8-0x0000000000330000-0x00000000009B4000-memory.dmp

Filesize
6.5MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads