stealc | 44e3feda65d57ca194d41fa2016231792806386c7c0e716adbdd08d61fa85c9b

General

Target

44e3feda65d57ca194d41fa2016231792806386c7c0e716adbdd08d61fa85c9b.exe
Size

1.7MB
MD5

d3ae60e5d411322af8ff06fcef297fb9
SHA1

913f8689eb78816685c0e2d9f10d91e4ed7960e6
SHA256

44e3feda65d57ca194d41fa2016231792806386c7c0e716adbdd08d61fa85c9b
SHA512

62f79857c66cb8bef930dd76a73dea7465581c4bc9f361b3f32d85d2124278bc60f0f56af4724aa49f5c95dc6a3ffe67f4e65bc77fae80fea5df573a5e585429
SSDEEP

49152:ywKvu0FFg1w+vG3mro122GXhkj6DFuZg9Ef/adO2:XPau1wJmro10hDDFAg9E6d5

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__	44e3feda65d57ca194d41fa2016231792806386c7c0e716adbdd08d61fa85c9b.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	44e3feda65d57ca194d41fa2016231792806386c7c0e716adbdd08d61fa85c9b.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	44e3feda65d57ca194d41fa2016231792806386c7c0e716adbdd08d61fa85c9b.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-1-5-21-3442511616-637977696-3186306149-1000\Software\Wine	44e3feda65d57ca194d41fa2016231792806386c7c0e716adbdd08d61fa85c9b.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
1816	44e3feda65d57ca194d41fa2016231792806386c7c0e716adbdd08d61fa85c9b.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
1452	1816	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	44e3feda65d57ca194d41fa2016231792806386c7c0e716adbdd08d61fa85c9b.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	44e3feda65d57ca194d41fa2016231792806386c7c0e716adbdd08d61fa85c9b.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	44e3feda65d57ca194d41fa2016231792806386c7c0e716adbdd08d61fa85c9b.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
1816	44e3feda65d57ca194d41fa2016231792806386c7c0e716adbdd08d61fa85c9b.exe
1816	44e3feda65d57ca194d41fa2016231792806386c7c0e716adbdd08d61fa85c9b.exe
1816	44e3feda65d57ca194d41fa2016231792806386c7c0e716adbdd08d61fa85c9b.exe
1816	44e3feda65d57ca194d41fa2016231792806386c7c0e716adbdd08d61fa85c9b.exe

C:\Users\Admin\AppData\Local\Temp\44e3feda65d57ca194d41fa2016231792806386c7c0e716adbdd08d61fa85c9b.exe
"C:\Users\Admin\AppData\Local\Temp\44e3feda65d57ca194d41fa2016231792806386c7c0e716adbdd08d61fa85c9b.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:1816
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1816 -s 1488
  2⤵
  - Program crash
  PID:1452

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 1816 -ip 1816
1⤵
PID:4992

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/1816-0-0x0000000000E80000-0x00000000014FF000-memory.dmp

Filesize
6.5MB

Download
memory/1816-1-0x0000000077594000-0x0000000077596000-memory.dmp

Filesize
8KB

Download
memory/1816-2-0x0000000000E81000-0x0000000000E98000-memory.dmp

Filesize
92KB

Download
memory/1816-3-0x0000000000E80000-0x00000000014FF000-memory.dmp

Filesize
6.5MB

Download
memory/1816-4-0x0000000000E80000-0x00000000014FF000-memory.dmp

Filesize
6.5MB

Download
memory/1816-5-0x0000000000E80000-0x00000000014FF000-memory.dmp

Filesize
6.5MB

Download
memory/1816-6-0x0000000000E80000-0x00000000014FF000-memory.dmp

Filesize
6.5MB

Download
memory/1816-7-0x0000000000E80000-0x00000000014FF000-memory.dmp

Filesize
6.5MB

Download
memory/1816-8-0x0000000000E80000-0x00000000014FF000-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