stealc | 4010c0dfdeacd10bca240b254393c1db8d542dd2dc1a3d2c1b1c964b9262f932

General

Target

4010c0dfdeacd10bca240b254393c1db8d542dd2dc1a3d2c1b1c964b9262f932.exe
Size

1.7MB
MD5

c30a7e97333b6994435f4b1d46b4d1b6
SHA1

73f2547cd05dfc135d35b34e70a90fb5b3e7a0dc
SHA256

4010c0dfdeacd10bca240b254393c1db8d542dd2dc1a3d2c1b1c964b9262f932
SHA512

4fa4b9c65c1dfad95691f62dcf8fb02e792c1a4ca340a955fa6a7bd663aed9b2207b96527dbb22534cac55787447c6df147b9e4029ea0929ebafb27cc819d6a3
SSDEEP

49152:HoxXDafSv5EcyLoFTD0+yff4ww5sUnHddi2:HcXDafUPyWofHO5T9R

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__	4010c0dfdeacd10bca240b254393c1db8d542dd2dc1a3d2c1b1c964b9262f932.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	4010c0dfdeacd10bca240b254393c1db8d542dd2dc1a3d2c1b1c964b9262f932.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	4010c0dfdeacd10bca240b254393c1db8d542dd2dc1a3d2c1b1c964b9262f932.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-1-5-21-3290804112-2823094203-3137964600-1000\Software\Wine	4010c0dfdeacd10bca240b254393c1db8d542dd2dc1a3d2c1b1c964b9262f932.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
1740	4010c0dfdeacd10bca240b254393c1db8d542dd2dc1a3d2c1b1c964b9262f932.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
2336	1740	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	4010c0dfdeacd10bca240b254393c1db8d542dd2dc1a3d2c1b1c964b9262f932.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	4010c0dfdeacd10bca240b254393c1db8d542dd2dc1a3d2c1b1c964b9262f932.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	4010c0dfdeacd10bca240b254393c1db8d542dd2dc1a3d2c1b1c964b9262f932.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
1740	4010c0dfdeacd10bca240b254393c1db8d542dd2dc1a3d2c1b1c964b9262f932.exe
1740	4010c0dfdeacd10bca240b254393c1db8d542dd2dc1a3d2c1b1c964b9262f932.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 1740 wrote to memory of 2336	1740	4010c0dfdeacd10bca240b254393c1db8d542dd2dc1a3d2c1b1c964b9262f932.exe	32
PID 1740 wrote to memory of 2336	1740	4010c0dfdeacd10bca240b254393c1db8d542dd2dc1a3d2c1b1c964b9262f932.exe	32
PID 1740 wrote to memory of 2336	1740	4010c0dfdeacd10bca240b254393c1db8d542dd2dc1a3d2c1b1c964b9262f932.exe	32
PID 1740 wrote to memory of 2336	1740	4010c0dfdeacd10bca240b254393c1db8d542dd2dc1a3d2c1b1c964b9262f932.exe	32

C:\Users\Admin\AppData\Local\Temp\4010c0dfdeacd10bca240b254393c1db8d542dd2dc1a3d2c1b1c964b9262f932.exe
"C:\Users\Admin\AppData\Local\Temp\4010c0dfdeacd10bca240b254393c1db8d542dd2dc1a3d2c1b1c964b9262f932.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:1740
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1740 -s 928
  2⤵
  - Program crash
  PID:2336

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/1740-0-0x00000000000C0000-0x0000000000756000-memory.dmp

Filesize
6.6MB

Download
memory/1740-1-0x0000000077980000-0x0000000077982000-memory.dmp

Filesize
8KB

Download
memory/1740-2-0x00000000000C1000-0x00000000000D8000-memory.dmp

Filesize
92KB

Download
memory/1740-3-0x00000000000C0000-0x0000000000756000-memory.dmp

Filesize
6.6MB

Download
memory/1740-4-0x00000000000C0000-0x0000000000756000-memory.dmp

Filesize
6.6MB

Download
memory/1740-5-0x00000000000C0000-0x0000000000756000-memory.dmp

Filesize
6.6MB

Download
memory/1740-6-0x00000000000C0000-0x0000000000756000-memory.dmp

Filesize
6.6MB

Download
memory/1740-7-0x00000000000C0000-0x0000000000756000-memory.dmp

Filesize
6.6MB

Download
memory/1740-8-0x00000000000C0000-0x0000000000756000-memory.dmp

Filesize
6.6MB

Download
memory/1740-9-0x00000000000C0000-0x0000000000756000-memory.dmp

Filesize
6.6MB

Download
memory/1740-10-0x00000000000C0000-0x0000000000756000-memory.dmp

Filesize
6.6MB

Download
memory/1740-11-0x00000000000C0000-0x0000000000756000-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