stealc | 140fee25984c222f1eb081d7c19bf50af552914c6bb756a6898aa8f460286f3d

General

Target

140fee25984c222f1eb081d7c19bf50af552914c6bb756a6898aa8f460286f3d.exe
Size

1.7MB
MD5

91d86380fa17ea2c050c07e9b27f5784
SHA1

30f0f0131360a102442bc3bd09504a4311da48bc
SHA256

140fee25984c222f1eb081d7c19bf50af552914c6bb756a6898aa8f460286f3d
SHA512

b55f82c0c6d13ac6a5fa3c50656ed67bcc5b38a14ef3c5ba3fdcf5188be0dc02bc79e2a95494bb8b12638d4c60b83cb347239b0f9468bd08a91482b1b043fcec
SSDEEP

49152:pDZ5P89p29ATzbGlBsjS9X3boYOG/BfiF:pAsS3bGl6u9X3XOG/Ba

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__	140fee25984c222f1eb081d7c19bf50af552914c6bb756a6898aa8f460286f3d.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	140fee25984c222f1eb081d7c19bf50af552914c6bb756a6898aa8f460286f3d.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	140fee25984c222f1eb081d7c19bf50af552914c6bb756a6898aa8f460286f3d.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-1-5-21-4177215427-74451935-3209572229-1000\Software\Wine	140fee25984c222f1eb081d7c19bf50af552914c6bb756a6898aa8f460286f3d.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
1700	140fee25984c222f1eb081d7c19bf50af552914c6bb756a6898aa8f460286f3d.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
1320	1700	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	140fee25984c222f1eb081d7c19bf50af552914c6bb756a6898aa8f460286f3d.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	140fee25984c222f1eb081d7c19bf50af552914c6bb756a6898aa8f460286f3d.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	140fee25984c222f1eb081d7c19bf50af552914c6bb756a6898aa8f460286f3d.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
1700	140fee25984c222f1eb081d7c19bf50af552914c6bb756a6898aa8f460286f3d.exe
1700	140fee25984c222f1eb081d7c19bf50af552914c6bb756a6898aa8f460286f3d.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 1700 wrote to memory of 1320	1700	140fee25984c222f1eb081d7c19bf50af552914c6bb756a6898aa8f460286f3d.exe	32
PID 1700 wrote to memory of 1320	1700	140fee25984c222f1eb081d7c19bf50af552914c6bb756a6898aa8f460286f3d.exe	32
PID 1700 wrote to memory of 1320	1700	140fee25984c222f1eb081d7c19bf50af552914c6bb756a6898aa8f460286f3d.exe	32
PID 1700 wrote to memory of 1320	1700	140fee25984c222f1eb081d7c19bf50af552914c6bb756a6898aa8f460286f3d.exe	32

C:\Users\Admin\AppData\Local\Temp\140fee25984c222f1eb081d7c19bf50af552914c6bb756a6898aa8f460286f3d.exe
"C:\Users\Admin\AppData\Local\Temp\140fee25984c222f1eb081d7c19bf50af552914c6bb756a6898aa8f460286f3d.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:1700
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1700 -s 928
  2⤵
  - Program crash
  PID:1320

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/1700-0-0x0000000000060000-0x00000000006D9000-memory.dmp

Filesize
6.5MB

Download
memory/1700-1-0x0000000077700000-0x0000000077702000-memory.dmp

Filesize
8KB

Download
memory/1700-2-0x0000000000061000-0x0000000000078000-memory.dmp

Filesize
92KB

Download
memory/1700-3-0x0000000000060000-0x00000000006D9000-memory.dmp

Filesize
6.5MB

Download
memory/1700-4-0x0000000000060000-0x00000000006D9000-memory.dmp

Filesize
6.5MB

Download
memory/1700-5-0x0000000000060000-0x00000000006D9000-memory.dmp

Filesize
6.5MB

Download
memory/1700-6-0x0000000000060000-0x00000000006D9000-memory.dmp

Filesize
6.5MB

Download
memory/1700-7-0x0000000000060000-0x00000000006D9000-memory.dmp

Filesize
6.5MB

Download
memory/1700-8-0x0000000000060000-0x00000000006D9000-memory.dmp

Filesize
6.5MB

Download
memory/1700-9-0x0000000000060000-0x00000000006D9000-memory.dmp

Filesize
6.5MB

Download
memory/1700-10-0x0000000000060000-0x00000000006D9000-memory.dmp

Filesize
6.5MB

Download
memory/1700-11-0x0000000000060000-0x00000000006D9000-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