stealc | 88788bc3251bbd36129a39e469892a2e6b4c420da7b322c0c88dcb3bc9e4e514

General

Target

88788bc3251bbd36129a39e469892a2e6b4c420da7b322c0c88dcb3bc9e4e514.exe
Size

1.7MB
MD5

d931cea7674b2c1d337d404475034fcc
SHA1

0280a0993cbf92ddd589ae7c8d11accfd72a06a0
SHA256

88788bc3251bbd36129a39e469892a2e6b4c420da7b322c0c88dcb3bc9e4e514
SHA512

50ffc6e2891f31139984bcc3a64605b37c8928a24918113eca0c70a976d04578567171751ea38b27ebe4c6357cf258754f5d9a06b4f879350e6dad1fbe1ad7da
SSDEEP

49152:VGUwfAIwoHpythFn8dG+hYFnGLOT4yGbr8Pw:VY4xoHCb8dG+hYFLTebb

Score

10^/10

stealc brat discovery evasion 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

evasion

Query Registry

T1012

Virtualization/Sandbox Evasion

T1497

description	ioc	Process
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	88788bc3251bbd36129a39e469892a2e6b4c420da7b322c0c88dcb3bc9e4e514.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	88788bc3251bbd36129a39e469892a2e6b4c420da7b322c0c88dcb3bc9e4e514.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	88788bc3251bbd36129a39e469892a2e6b4c420da7b322c0c88dcb3bc9e4e514.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-1-5-21-4177215427-74451935-3209572229-1000\Software\Wine	88788bc3251bbd36129a39e469892a2e6b4c420da7b322c0c88dcb3bc9e4e514.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
2432	88788bc3251bbd36129a39e469892a2e6b4c420da7b322c0c88dcb3bc9e4e514.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
2580	2432	WerFault.exe	30

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	88788bc3251bbd36129a39e469892a2e6b4c420da7b322c0c88dcb3bc9e4e514.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	88788bc3251bbd36129a39e469892a2e6b4c420da7b322c0c88dcb3bc9e4e514.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	88788bc3251bbd36129a39e469892a2e6b4c420da7b322c0c88dcb3bc9e4e514.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2432	88788bc3251bbd36129a39e469892a2e6b4c420da7b322c0c88dcb3bc9e4e514.exe
2432	88788bc3251bbd36129a39e469892a2e6b4c420da7b322c0c88dcb3bc9e4e514.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2432 wrote to memory of 2580	2432	88788bc3251bbd36129a39e469892a2e6b4c420da7b322c0c88dcb3bc9e4e514.exe	32
PID 2432 wrote to memory of 2580	2432	88788bc3251bbd36129a39e469892a2e6b4c420da7b322c0c88dcb3bc9e4e514.exe	32
PID 2432 wrote to memory of 2580	2432	88788bc3251bbd36129a39e469892a2e6b4c420da7b322c0c88dcb3bc9e4e514.exe	32
PID 2432 wrote to memory of 2580	2432	88788bc3251bbd36129a39e469892a2e6b4c420da7b322c0c88dcb3bc9e4e514.exe	32

C:\Users\Admin\AppData\Local\Temp\88788bc3251bbd36129a39e469892a2e6b4c420da7b322c0c88dcb3bc9e4e514.exe
"C:\Users\Admin\AppData\Local\Temp\88788bc3251bbd36129a39e469892a2e6b4c420da7b322c0c88dcb3bc9e4e514.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:2432
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2432 -s 936
  2⤵
  - Program crash
  PID:2580

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/2432-0-0x0000000000310000-0x0000000000992000-memory.dmp

Filesize
6.5MB

Download
memory/2432-1-0x0000000077600000-0x0000000077602000-memory.dmp

Filesize
8KB

Download
memory/2432-3-0x0000000000310000-0x0000000000992000-memory.dmp

Filesize
6.5MB

Download
memory/2432-2-0x0000000000311000-0x0000000000328000-memory.dmp

Filesize
92KB

Download
memory/2432-4-0x0000000000310000-0x0000000000992000-memory.dmp

Filesize
6.5MB

Download
memory/2432-5-0x0000000000310000-0x0000000000992000-memory.dmp

Filesize
6.5MB

Download
memory/2432-6-0x0000000000310000-0x0000000000992000-memory.dmp

Filesize
6.5MB

Download
memory/2432-7-0x0000000000310000-0x0000000000992000-memory.dmp

Filesize
6.5MB

Download
memory/2432-8-0x0000000000310000-0x0000000000992000-memory.dmp

Filesize
6.5MB

Download
memory/2432-9-0x0000000000310000-0x0000000000992000-memory.dmp

Filesize
6.5MB

Download
memory/2432-10-0x0000000000310000-0x0000000000992000-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