stealc | 87905bbf5c3decc2dad4fdcb744f445a337df27c3d32a28ae4c048dabe3e8ea6

General

Target

87905bbf5c3decc2dad4fdcb744f445a337df27c3d32a28ae4c048dabe3e8ea6.exe
Size

2.7MB
MD5

3410b8b9caad3d3464849510ee9f0bef
SHA1

f704a8b0a1aa793383ed685c2ba409fcc7738019
SHA256

87905bbf5c3decc2dad4fdcb744f445a337df27c3d32a28ae4c048dabe3e8ea6
SHA512

e16a2f8b5d7ef1036c188e70c3ff26d4a5e94bfc5f523732e3454d19fdf0cb2ef0935721df939b79f033b9ed2f1205a91b41b737cdc29af4bf57bcd7c774be01
SSDEEP

49152:nYVY5ngODnd1KpLOY5MJihsn+R///Tmlw:YVY5gQnd1KpLDMJi8+9Tml

Score

10^/10

stealc stok discovery evasion stealer

Malware Config

Extracted

Family

stealc

Botnet

stok

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

evasion

Query Registry

T1012

Virtualization/Sandbox Evasion

T1497

description	ioc	Process
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	87905bbf5c3decc2dad4fdcb744f445a337df27c3d32a28ae4c048dabe3e8ea6.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	87905bbf5c3decc2dad4fdcb744f445a337df27c3d32a28ae4c048dabe3e8ea6.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	87905bbf5c3decc2dad4fdcb744f445a337df27c3d32a28ae4c048dabe3e8ea6.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.

evasion

Query Registry

T1012

Virtualization/Sandbox Evasion

T1497

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-3063565911-2056067323-3330884624-1000\Software\Wine	87905bbf5c3decc2dad4fdcb744f445a337df27c3d32a28ae4c048dabe3e8ea6.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
2676	87905bbf5c3decc2dad4fdcb744f445a337df27c3d32a28ae4c048dabe3e8ea6.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
2140	2676	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	87905bbf5c3decc2dad4fdcb744f445a337df27c3d32a28ae4c048dabe3e8ea6.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	87905bbf5c3decc2dad4fdcb744f445a337df27c3d32a28ae4c048dabe3e8ea6.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	87905bbf5c3decc2dad4fdcb744f445a337df27c3d32a28ae4c048dabe3e8ea6.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2676	87905bbf5c3decc2dad4fdcb744f445a337df27c3d32a28ae4c048dabe3e8ea6.exe
2676	87905bbf5c3decc2dad4fdcb744f445a337df27c3d32a28ae4c048dabe3e8ea6.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2676 wrote to memory of 2140	2676	87905bbf5c3decc2dad4fdcb744f445a337df27c3d32a28ae4c048dabe3e8ea6.exe	31
PID 2676 wrote to memory of 2140	2676	87905bbf5c3decc2dad4fdcb744f445a337df27c3d32a28ae4c048dabe3e8ea6.exe	31
PID 2676 wrote to memory of 2140	2676	87905bbf5c3decc2dad4fdcb744f445a337df27c3d32a28ae4c048dabe3e8ea6.exe	31
PID 2676 wrote to memory of 2140	2676	87905bbf5c3decc2dad4fdcb744f445a337df27c3d32a28ae4c048dabe3e8ea6.exe	31

C:\Users\Admin\AppData\Local\Temp\87905bbf5c3decc2dad4fdcb744f445a337df27c3d32a28ae4c048dabe3e8ea6.exe
"C:\Users\Admin\AppData\Local\Temp\87905bbf5c3decc2dad4fdcb744f445a337df27c3d32a28ae4c048dabe3e8ea6.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:2676
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2676 -s 928
  2⤵
  - Program crash
  PID:2140

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/2676-0-0x00000000013B0000-0x00000000018A5000-memory.dmp

Filesize
5.0MB

Download
memory/2676-1-0x00000000773B0000-0x00000000773B2000-memory.dmp

Filesize
8KB

Download
memory/2676-2-0x00000000013B1000-0x00000000013C8000-memory.dmp

Filesize
92KB

Download
memory/2676-3-0x00000000013B0000-0x00000000018A5000-memory.dmp

Filesize
5.0MB

Download
memory/2676-4-0x00000000013B0000-0x00000000018A5000-memory.dmp

Filesize
5.0MB

Download
memory/2676-5-0x00000000013B0000-0x00000000018A5000-memory.dmp

Filesize
5.0MB

Download
memory/2676-6-0x00000000013B0000-0x00000000018A5000-memory.dmp

Filesize
5.0MB

Download
memory/2676-7-0x00000000013B0000-0x00000000018A5000-memory.dmp

Filesize
5.0MB

Download
memory/2676-8-0x00000000013B0000-0x00000000018A5000-memory.dmp

Filesize
5.0MB

Download
memory/2676-9-0x00000000013B0000-0x00000000018A5000-memory.dmp

Filesize
5.0MB

Download
memory/2676-10-0x00000000013B0000-0x00000000018A5000-memory.dmp

Filesize
5.0MB

Download
memory/2676-11-0x00000000013B0000-0x00000000018A5000-memory.dmp

Filesize
5.0MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads