stealc | 3c26da49baee1d062ab624b7809963ed1c3b3f95bb2f4920d5be87c7616aecf0

General

Target

3c26da49baee1d062ab624b7809963ed1c3b3f95bb2f4920d5be87c7616aecf0.exe
Size

1.7MB
MD5

99cbd336b9d5c32d5b0e6859d9a93066
SHA1

8ad4cf89d4abbd54c87fe7272ef702b979b3b32f
SHA256

3c26da49baee1d062ab624b7809963ed1c3b3f95bb2f4920d5be87c7616aecf0
SHA512

8a7b93eeef8e9ebc159bb6aeaa5ac38c89a0cb1074052a75eec5c4bff49858259ba9bd2bb1049de2a261c007f8c4ade69a643d0295df38df18cfc0418ba6a66b
SSDEEP

24576:7kSZEypOhik0knSpe/mhfLCme5SqBPV3ukysoVxoBV3VNywqqBcQ9Ay1yLKzms6F:7k4AsUm1C9PVPOVxon3hh9CKipoGXO7

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__	3c26da49baee1d062ab624b7809963ed1c3b3f95bb2f4920d5be87c7616aecf0.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	3c26da49baee1d062ab624b7809963ed1c3b3f95bb2f4920d5be87c7616aecf0.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	3c26da49baee1d062ab624b7809963ed1c3b3f95bb2f4920d5be87c7616aecf0.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-1-5-21-1045960512-3948844814-3059691613-1000\Software\Wine	3c26da49baee1d062ab624b7809963ed1c3b3f95bb2f4920d5be87c7616aecf0.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
4496	3c26da49baee1d062ab624b7809963ed1c3b3f95bb2f4920d5be87c7616aecf0.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
2692	4496	WerFault.exe	82

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	3c26da49baee1d062ab624b7809963ed1c3b3f95bb2f4920d5be87c7616aecf0.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	3c26da49baee1d062ab624b7809963ed1c3b3f95bb2f4920d5be87c7616aecf0.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	3c26da49baee1d062ab624b7809963ed1c3b3f95bb2f4920d5be87c7616aecf0.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
4496	3c26da49baee1d062ab624b7809963ed1c3b3f95bb2f4920d5be87c7616aecf0.exe
4496	3c26da49baee1d062ab624b7809963ed1c3b3f95bb2f4920d5be87c7616aecf0.exe
4496	3c26da49baee1d062ab624b7809963ed1c3b3f95bb2f4920d5be87c7616aecf0.exe
4496	3c26da49baee1d062ab624b7809963ed1c3b3f95bb2f4920d5be87c7616aecf0.exe

C:\Users\Admin\AppData\Local\Temp\3c26da49baee1d062ab624b7809963ed1c3b3f95bb2f4920d5be87c7616aecf0.exe
"C:\Users\Admin\AppData\Local\Temp\3c26da49baee1d062ab624b7809963ed1c3b3f95bb2f4920d5be87c7616aecf0.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
PID:4496
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4496 -s 1492
  2⤵
  - Program crash
  PID:2692

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 420 -p 4496 -ip 4496
1⤵
PID:3432

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/4496-0-0x0000000000320000-0x00000000009A6000-memory.dmp

Filesize
6.5MB

Download
memory/4496-1-0x00000000772F4000-0x00000000772F6000-memory.dmp

Filesize
8KB

Download
memory/4496-2-0x0000000000321000-0x0000000000338000-memory.dmp

Filesize
92KB

Download
memory/4496-3-0x0000000000320000-0x00000000009A6000-memory.dmp

Filesize
6.5MB

Download
memory/4496-4-0x0000000000320000-0x00000000009A6000-memory.dmp

Filesize
6.5MB

Download
memory/4496-5-0x0000000000320000-0x00000000009A6000-memory.dmp

Filesize
6.5MB

Download
memory/4496-6-0x0000000000320000-0x00000000009A6000-memory.dmp

Filesize
6.5MB

Download
memory/4496-7-0x0000000000320000-0x00000000009A6000-memory.dmp

Filesize
6.5MB

Download
memory/4496-8-0x0000000000320000-0x00000000009A6000-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