stealc | 292eda049137573fc8b923ef58da8218eb5cfab29010e459ba6963434fa1cf7c

Analysis

max time kernel
93s
max time network
149s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
17-01-2025 16:29

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General

Target

random.exe
Size

1.8MB
MD5

f930046acafd7c97c30231b17b5d053a
SHA1

d442f54bf5d1b61457442a2c110da594dc7825ec
SHA256

292eda049137573fc8b923ef58da8218eb5cfab29010e459ba6963434fa1cf7c
SHA512

1f96c0b414b39d20264465274dda554b47c6fc32e32468db30d2d4a37efc60bd50184c7d0afc482218f2f6f5de6678958038e581f5e1afbf9324cff7ea98ce2e
SSDEEP

24576:rq7KQueAo6rwtCqKGMZaT2Llz2/+9xoWiyOi4F14Mp2f20RQm7QQlZ6sZswi38y:GEIobASlz4ZMOt/QQQl7Z

Score

10^/10

stealc brat discovery evasion stealer

Malware Config

Extracted

Family

stealc

Botnet

brat

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

evasion

Query Registry

T1012

Virtualization/Sandbox Evasion

T1497

description	ioc	Process
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	random.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	random.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	random.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.

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	random.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
1936	random.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
4720	1936	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	random.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	random.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	random.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
1936	random.exe
1936	random.exe
1936	random.exe
1936	random.exe

C:\Users\Admin\AppData\Local\Temp\random.exe
"C:\Users\Admin\AppData\Local\Temp\random.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:1936
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1936 -s 1480
  2⤵
  - Program crash
  PID:4720

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 1936 -ip 1936
1⤵
PID:1924

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Virtualization/Sandbox Evasion

T1497

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Virtualization/Sandbox Evasion

T1497

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/1936-0-0x00000000002F0000-0x00000000009A0000-memory.dmp

Filesize
6.7MB

Download
memory/1936-1-0x0000000077254000-0x0000000077256000-memory.dmp

Filesize
8KB

Download
memory/1936-2-0x00000000002F1000-0x0000000000308000-memory.dmp

Filesize
92KB

Download
memory/1936-3-0x00000000002F0000-0x00000000009A0000-memory.dmp

Filesize
6.7MB

Download
memory/1936-4-0x00000000002F0000-0x00000000009A0000-memory.dmp

Filesize
6.7MB

Download
memory/1936-5-0x00000000002F0000-0x00000000009A0000-memory.dmp

Filesize
6.7MB

Download
memory/1936-6-0x00000000002F0000-0x00000000009A0000-memory.dmp

Filesize
6.7MB

Download
memory/1936-7-0x00000000002F0000-0x00000000009A0000-memory.dmp

Filesize
6.7MB

Download
memory/1936-8-0x00000000002F0000-0x00000000009A0000-memory.dmp

Filesize
6.7MB

Download