stealc | 45b1ae9fb26106ce85f580d173d7b69b7225ca79560f050192ba8d7b1727e28a

General

Target

45b1ae9fb26106ce85f580d173d7b69b7225ca79560f050192ba8d7b1727e28a.exe
Size

1.7MB
MD5

6cd93343dfc28fec932db695b00b0634
SHA1

73a764453224137302d1a79fe71b9780319b94d5
SHA256

45b1ae9fb26106ce85f580d173d7b69b7225ca79560f050192ba8d7b1727e28a
SHA512

d8d352280f196e737b08ede4f656381d7db3b675b62e6a27ed1d21637f23942e35d08d84924e34afe7ec21a74cf5daeead39ed1e5e476dd47a475ff542d3ac32
SSDEEP

49152:rLrBx6CjLvenZA7nBdp77YypgR5RFa9N7W:rxx6UGGDB8y+zF+

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__	45b1ae9fb26106ce85f580d173d7b69b7225ca79560f050192ba8d7b1727e28a.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	45b1ae9fb26106ce85f580d173d7b69b7225ca79560f050192ba8d7b1727e28a.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	45b1ae9fb26106ce85f580d173d7b69b7225ca79560f050192ba8d7b1727e28a.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-1-5-21-3063565911-2056067323-3330884624-1000\Software\Wine	45b1ae9fb26106ce85f580d173d7b69b7225ca79560f050192ba8d7b1727e28a.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
3068	45b1ae9fb26106ce85f580d173d7b69b7225ca79560f050192ba8d7b1727e28a.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
1804	3068	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	45b1ae9fb26106ce85f580d173d7b69b7225ca79560f050192ba8d7b1727e28a.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	45b1ae9fb26106ce85f580d173d7b69b7225ca79560f050192ba8d7b1727e28a.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	45b1ae9fb26106ce85f580d173d7b69b7225ca79560f050192ba8d7b1727e28a.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
3068	45b1ae9fb26106ce85f580d173d7b69b7225ca79560f050192ba8d7b1727e28a.exe
3068	45b1ae9fb26106ce85f580d173d7b69b7225ca79560f050192ba8d7b1727e28a.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 3068 wrote to memory of 1804	3068	45b1ae9fb26106ce85f580d173d7b69b7225ca79560f050192ba8d7b1727e28a.exe	32
PID 3068 wrote to memory of 1804	3068	45b1ae9fb26106ce85f580d173d7b69b7225ca79560f050192ba8d7b1727e28a.exe	32
PID 3068 wrote to memory of 1804	3068	45b1ae9fb26106ce85f580d173d7b69b7225ca79560f050192ba8d7b1727e28a.exe	32
PID 3068 wrote to memory of 1804	3068	45b1ae9fb26106ce85f580d173d7b69b7225ca79560f050192ba8d7b1727e28a.exe	32

C:\Users\Admin\AppData\Local\Temp\45b1ae9fb26106ce85f580d173d7b69b7225ca79560f050192ba8d7b1727e28a.exe
"C:\Users\Admin\AppData\Local\Temp\45b1ae9fb26106ce85f580d173d7b69b7225ca79560f050192ba8d7b1727e28a.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:3068
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3068 -s 924
  2⤵
  - Program crash
  PID:1804

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/3068-0-0x00000000002E0000-0x0000000000982000-memory.dmp

Filesize
6.6MB

Download
memory/3068-1-0x0000000077280000-0x0000000077282000-memory.dmp

Filesize
8KB

Download
memory/3068-2-0x00000000002E1000-0x00000000002F8000-memory.dmp

Filesize
92KB

Download
memory/3068-3-0x00000000002E0000-0x0000000000982000-memory.dmp

Filesize
6.6MB

Download
memory/3068-4-0x00000000002E0000-0x0000000000982000-memory.dmp

Filesize
6.6MB

Download
memory/3068-5-0x00000000002E0000-0x0000000000982000-memory.dmp

Filesize
6.6MB

Download
memory/3068-6-0x00000000002E0000-0x0000000000982000-memory.dmp

Filesize
6.6MB

Download
memory/3068-7-0x00000000002E0000-0x0000000000982000-memory.dmp

Filesize
6.6MB

Download
memory/3068-8-0x00000000002E0000-0x0000000000982000-memory.dmp

Filesize
6.6MB

Download
memory/3068-9-0x00000000002E0000-0x0000000000982000-memory.dmp

Filesize
6.6MB

Download
memory/3068-10-0x00000000002E0000-0x0000000000982000-memory.dmp

Filesize
6.6MB

Download
memory/3068-11-0x00000000002E0000-0x0000000000982000-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