stealc | 7a5c480b635eccb11f3c8fe062d2cf2bcee0e7d90f73c3d764a9fb82bd0b7271

General

Target

7a5c480b635eccb11f3c8fe062d2cf2bcee0e7d90f73c3d764a9fb82bd0b7271.exe
Size

1.7MB
MD5

8b70d6ead93276c619c40a36628389a1
SHA1

09c2f961f85ada7702780157c5c40db87508072b
SHA256

7a5c480b635eccb11f3c8fe062d2cf2bcee0e7d90f73c3d764a9fb82bd0b7271
SHA512

bd14b15332fc5fbf5b99a2ea667a39d8fa0627dc50a62617fbee467fc880ae8ef3e45173234ec1fd2038a2301e1e0b19872a7768a84aad96fefb5bd65d01270b
SSDEEP

24576:KMOQnPQKyzsNNR11PwHuGbSTZZIkEU0CwtIKzj/bCng27pZm4BW1v/dgsjzlot9F:DQRyFIATZZIkpsFDIdBW1vWsj4J

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__	7a5c480b635eccb11f3c8fe062d2cf2bcee0e7d90f73c3d764a9fb82bd0b7271.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\VideoBiosVersion	7a5c480b635eccb11f3c8fe062d2cf2bcee0e7d90f73c3d764a9fb82bd0b7271.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	7a5c480b635eccb11f3c8fe062d2cf2bcee0e7d90f73c3d764a9fb82bd0b7271.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-1-5-21-3692679935-4019334568-335155002-1000\Software\Wine	7a5c480b635eccb11f3c8fe062d2cf2bcee0e7d90f73c3d764a9fb82bd0b7271.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
3032	7a5c480b635eccb11f3c8fe062d2cf2bcee0e7d90f73c3d764a9fb82bd0b7271.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
2648	3032	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	7a5c480b635eccb11f3c8fe062d2cf2bcee0e7d90f73c3d764a9fb82bd0b7271.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	7a5c480b635eccb11f3c8fe062d2cf2bcee0e7d90f73c3d764a9fb82bd0b7271.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	7a5c480b635eccb11f3c8fe062d2cf2bcee0e7d90f73c3d764a9fb82bd0b7271.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
3032	7a5c480b635eccb11f3c8fe062d2cf2bcee0e7d90f73c3d764a9fb82bd0b7271.exe
3032	7a5c480b635eccb11f3c8fe062d2cf2bcee0e7d90f73c3d764a9fb82bd0b7271.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 3032 wrote to memory of 2648	3032	7a5c480b635eccb11f3c8fe062d2cf2bcee0e7d90f73c3d764a9fb82bd0b7271.exe	32
PID 3032 wrote to memory of 2648	3032	7a5c480b635eccb11f3c8fe062d2cf2bcee0e7d90f73c3d764a9fb82bd0b7271.exe	32
PID 3032 wrote to memory of 2648	3032	7a5c480b635eccb11f3c8fe062d2cf2bcee0e7d90f73c3d764a9fb82bd0b7271.exe	32
PID 3032 wrote to memory of 2648	3032	7a5c480b635eccb11f3c8fe062d2cf2bcee0e7d90f73c3d764a9fb82bd0b7271.exe	32

C:\Users\Admin\AppData\Local\Temp\7a5c480b635eccb11f3c8fe062d2cf2bcee0e7d90f73c3d764a9fb82bd0b7271.exe
"C:\Users\Admin\AppData\Local\Temp\7a5c480b635eccb11f3c8fe062d2cf2bcee0e7d90f73c3d764a9fb82bd0b7271.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:3032
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3032 -s 432
  2⤵
  - Program crash
  PID:2648

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/3032-0-0x0000000000850000-0x0000000000EF6000-memory.dmp

Filesize
6.6MB

Download
memory/3032-1-0x0000000077C80000-0x0000000077C82000-memory.dmp

Filesize
8KB

Download
memory/3032-2-0x0000000000851000-0x0000000000868000-memory.dmp

Filesize
92KB

Download
memory/3032-3-0x0000000000850000-0x0000000000EF6000-memory.dmp

Filesize
6.6MB

Download
memory/3032-4-0x0000000000850000-0x0000000000EF6000-memory.dmp

Filesize
6.6MB

Download
memory/3032-5-0x0000000000850000-0x0000000000EF6000-memory.dmp

Filesize
6.6MB

Download
memory/3032-6-0x0000000000850000-0x0000000000EF6000-memory.dmp

Filesize
6.6MB

Download
memory/3032-7-0x0000000000850000-0x0000000000EF6000-memory.dmp

Filesize
6.6MB

Download
memory/3032-8-0x0000000000850000-0x0000000000EF6000-memory.dmp

Filesize
6.6MB

Download
memory/3032-9-0x0000000000850000-0x0000000000EF6000-memory.dmp

Filesize
6.6MB

Download
memory/3032-11-0x0000000000850000-0x0000000000EF6000-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