stealc | a7fe0330982a0ec1d976412ce3c5101a3ab687ba4f48e80ee5f5498ea2e83f69

General

Target

a7fe0330982a0ec1d976412ce3c5101a3ab687ba4f48e80ee5f5498ea2e83f69.exe
Size

1.7MB
MD5

0b11da9f066fe2274bb6279b16d670bf
SHA1

2a767706454bf4770c369233415a8285864c400d
SHA256

a7fe0330982a0ec1d976412ce3c5101a3ab687ba4f48e80ee5f5498ea2e83f69
SHA512

fcd421e8c944219d05791c945eca8f5ebde003f12360ad8cb3f0bbe200a586f380725076925833e2b90201c069cae400898818fc2c3f620d60e3dd234a36ef55
SSDEEP

24576:xR47FurepwKAICFXbtQ0+MuJvl6YiFJ7gxo87uEJ0HL1PNEZFTEayWra2l7O0J2p:xWErGdIn+MiC37nEc11+pVWI7RSBPB

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__	a7fe0330982a0ec1d976412ce3c5101a3ab687ba4f48e80ee5f5498ea2e83f69.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	a7fe0330982a0ec1d976412ce3c5101a3ab687ba4f48e80ee5f5498ea2e83f69.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	a7fe0330982a0ec1d976412ce3c5101a3ab687ba4f48e80ee5f5498ea2e83f69.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	a7fe0330982a0ec1d976412ce3c5101a3ab687ba4f48e80ee5f5498ea2e83f69.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
2316	a7fe0330982a0ec1d976412ce3c5101a3ab687ba4f48e80ee5f5498ea2e83f69.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
2432	2316	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	a7fe0330982a0ec1d976412ce3c5101a3ab687ba4f48e80ee5f5498ea2e83f69.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	a7fe0330982a0ec1d976412ce3c5101a3ab687ba4f48e80ee5f5498ea2e83f69.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	a7fe0330982a0ec1d976412ce3c5101a3ab687ba4f48e80ee5f5498ea2e83f69.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2316	a7fe0330982a0ec1d976412ce3c5101a3ab687ba4f48e80ee5f5498ea2e83f69.exe
2316	a7fe0330982a0ec1d976412ce3c5101a3ab687ba4f48e80ee5f5498ea2e83f69.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2316 wrote to memory of 2432	2316	a7fe0330982a0ec1d976412ce3c5101a3ab687ba4f48e80ee5f5498ea2e83f69.exe	32
PID 2316 wrote to memory of 2432	2316	a7fe0330982a0ec1d976412ce3c5101a3ab687ba4f48e80ee5f5498ea2e83f69.exe	32
PID 2316 wrote to memory of 2432	2316	a7fe0330982a0ec1d976412ce3c5101a3ab687ba4f48e80ee5f5498ea2e83f69.exe	32
PID 2316 wrote to memory of 2432	2316	a7fe0330982a0ec1d976412ce3c5101a3ab687ba4f48e80ee5f5498ea2e83f69.exe	32

C:\Users\Admin\AppData\Local\Temp\a7fe0330982a0ec1d976412ce3c5101a3ab687ba4f48e80ee5f5498ea2e83f69.exe
"C:\Users\Admin\AppData\Local\Temp\a7fe0330982a0ec1d976412ce3c5101a3ab687ba4f48e80ee5f5498ea2e83f69.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:2316
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2316 -s 928
  2⤵
  - Program crash
  PID:2432

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/2316-0-0x0000000001220000-0x00000000018B7000-memory.dmp

Filesize
6.6MB

Download
memory/2316-1-0x0000000077160000-0x0000000077162000-memory.dmp

Filesize
8KB

Download
memory/2316-2-0x0000000001221000-0x0000000001238000-memory.dmp

Filesize
92KB

Download
memory/2316-3-0x0000000001220000-0x00000000018B7000-memory.dmp

Filesize
6.6MB

Download
memory/2316-4-0x0000000001220000-0x00000000018B7000-memory.dmp

Filesize
6.6MB

Download
memory/2316-5-0x0000000001220000-0x00000000018B7000-memory.dmp

Filesize
6.6MB

Download
memory/2316-6-0x0000000001220000-0x00000000018B7000-memory.dmp

Filesize
6.6MB

Download
memory/2316-7-0x0000000001220000-0x00000000018B7000-memory.dmp

Filesize
6.6MB

Download
memory/2316-8-0x0000000001220000-0x00000000018B7000-memory.dmp

Filesize
6.6MB

Download
memory/2316-9-0x0000000001220000-0x00000000018B7000-memory.dmp

Filesize
6.6MB

Download
memory/2316-10-0x0000000001220000-0x00000000018B7000-memory.dmp

Filesize
6.6MB

Download
memory/2316-11-0x0000000001220000-0x00000000018B7000-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