stealc | 32e8ffb15a9a5ff1c998716b2f772b25fa4451c7d7874abe9754bc9e9f81496a

General

Target

32e8ffb15a9a5ff1c998716b2f772b25fa4451c7d7874abe9754bc9e9f81496a.exe
Size

1.7MB
MD5

f42cf1c7f4bbd965b7b44265d965bb7f
SHA1

f70fb6e9d21864b8160b9b34e0eb80cd6df9cf96
SHA256

32e8ffb15a9a5ff1c998716b2f772b25fa4451c7d7874abe9754bc9e9f81496a
SHA512

ec19a5980b662a722c015cc63ed97f4d7840a6fdbad0b7d2ecf98a72bcb869ecd8ce6f96f16665fabda5d67e86bac69ce23c9e655aeeec28800bce43a3aae926
SSDEEP

49152:2qBIs/NjqNbl7gQtOqrpeYFJPeeY6+KYBi:2Qx0NblUr8Jh9R

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__	32e8ffb15a9a5ff1c998716b2f772b25fa4451c7d7874abe9754bc9e9f81496a.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	32e8ffb15a9a5ff1c998716b2f772b25fa4451c7d7874abe9754bc9e9f81496a.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	32e8ffb15a9a5ff1c998716b2f772b25fa4451c7d7874abe9754bc9e9f81496a.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-1-5-21-2045521122-590294423-3465680274-1000\Software\Wine	32e8ffb15a9a5ff1c998716b2f772b25fa4451c7d7874abe9754bc9e9f81496a.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
4836	32e8ffb15a9a5ff1c998716b2f772b25fa4451c7d7874abe9754bc9e9f81496a.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
1576	4836	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	32e8ffb15a9a5ff1c998716b2f772b25fa4451c7d7874abe9754bc9e9f81496a.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	32e8ffb15a9a5ff1c998716b2f772b25fa4451c7d7874abe9754bc9e9f81496a.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	32e8ffb15a9a5ff1c998716b2f772b25fa4451c7d7874abe9754bc9e9f81496a.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
4836	32e8ffb15a9a5ff1c998716b2f772b25fa4451c7d7874abe9754bc9e9f81496a.exe
4836	32e8ffb15a9a5ff1c998716b2f772b25fa4451c7d7874abe9754bc9e9f81496a.exe
4836	32e8ffb15a9a5ff1c998716b2f772b25fa4451c7d7874abe9754bc9e9f81496a.exe
4836	32e8ffb15a9a5ff1c998716b2f772b25fa4451c7d7874abe9754bc9e9f81496a.exe

C:\Users\Admin\AppData\Local\Temp\32e8ffb15a9a5ff1c998716b2f772b25fa4451c7d7874abe9754bc9e9f81496a.exe
"C:\Users\Admin\AppData\Local\Temp\32e8ffb15a9a5ff1c998716b2f772b25fa4451c7d7874abe9754bc9e9f81496a.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:4836
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4836 -s 1488
  2⤵
  - Program crash
  PID:1576

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 376 -p 4836 -ip 4836
1⤵
PID:1744

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

Replay Monitor

Loading Replay Monitor...

Downloads

memory/4836-0-0x0000000000F30000-0x00000000015D2000-memory.dmp

Filesize
6.6MB

Download
memory/4836-1-0x0000000076F04000-0x0000000076F06000-memory.dmp

Filesize
8KB

Download
memory/4836-2-0x0000000000F31000-0x0000000000F48000-memory.dmp

Filesize
92KB

Download
memory/4836-3-0x0000000000F30000-0x00000000015D2000-memory.dmp

Filesize
6.6MB

Download
memory/4836-4-0x0000000000F30000-0x00000000015D2000-memory.dmp

Filesize
6.6MB

Download
memory/4836-5-0x0000000000F30000-0x00000000015D2000-memory.dmp

Filesize
6.6MB

Download
memory/4836-6-0x0000000000F30000-0x00000000015D2000-memory.dmp

Filesize
6.6MB

Download
memory/4836-7-0x0000000000F30000-0x00000000015D2000-memory.dmp

Filesize
6.6MB

Download
memory/4836-8-0x0000000000F30000-0x00000000015D2000-memory.dmp

Filesize
6.6MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads