stealc | 603708e817135fa0ce96a6ace60c74b4df878025463e8cfc5dc46bce63c9cdcf

General

Target

603708e817135fa0ce96a6ace60c74b4df878025463e8cfc5dc46bce63c9cdcf.exe
Size

5.1MB
MD5

498f021ea83eb0e1327463f1909cf549
SHA1

36c21d120d0d74a231c443cd607c7698341bd4c2
SHA256

603708e817135fa0ce96a6ace60c74b4df878025463e8cfc5dc46bce63c9cdcf
SHA512

eedfc2ea6e1fa0e571f33bcf911a227ec2a91d4812facbc67ec4976bf93f73ca2f9438d66362e4656958b1647aba8bd4c97f3ded9b2381ef85817d1cea321889
SSDEEP

49152:9H0WruJYB6ooPBCLg1SqLl+nr8zvdqB6BSlsdQDO8:9H0WrmI6FP4Lg4Cl+nr8Ja6olWQC8

Score

10^/10

stealc stok discovery evasion stealer

Malware Config

Extracted

Family

stealc

Botnet

stok

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__	603708e817135fa0ce96a6ace60c74b4df878025463e8cfc5dc46bce63c9cdcf.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	603708e817135fa0ce96a6ace60c74b4df878025463e8cfc5dc46bce63c9cdcf.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	603708e817135fa0ce96a6ace60c74b4df878025463e8cfc5dc46bce63c9cdcf.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-1-5-21-3551809350-4263495960-1443967649-1000\Software\Wine	603708e817135fa0ce96a6ace60c74b4df878025463e8cfc5dc46bce63c9cdcf.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
2200	603708e817135fa0ce96a6ace60c74b4df878025463e8cfc5dc46bce63c9cdcf.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
2880	2200	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	603708e817135fa0ce96a6ace60c74b4df878025463e8cfc5dc46bce63c9cdcf.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	603708e817135fa0ce96a6ace60c74b4df878025463e8cfc5dc46bce63c9cdcf.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	603708e817135fa0ce96a6ace60c74b4df878025463e8cfc5dc46bce63c9cdcf.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2200	603708e817135fa0ce96a6ace60c74b4df878025463e8cfc5dc46bce63c9cdcf.exe
2200	603708e817135fa0ce96a6ace60c74b4df878025463e8cfc5dc46bce63c9cdcf.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2200 wrote to memory of 2880	2200	603708e817135fa0ce96a6ace60c74b4df878025463e8cfc5dc46bce63c9cdcf.exe	32
PID 2200 wrote to memory of 2880	2200	603708e817135fa0ce96a6ace60c74b4df878025463e8cfc5dc46bce63c9cdcf.exe	32
PID 2200 wrote to memory of 2880	2200	603708e817135fa0ce96a6ace60c74b4df878025463e8cfc5dc46bce63c9cdcf.exe	32
PID 2200 wrote to memory of 2880	2200	603708e817135fa0ce96a6ace60c74b4df878025463e8cfc5dc46bce63c9cdcf.exe	32

C:\Users\Admin\AppData\Local\Temp\603708e817135fa0ce96a6ace60c74b4df878025463e8cfc5dc46bce63c9cdcf.exe
"C:\Users\Admin\AppData\Local\Temp\603708e817135fa0ce96a6ace60c74b4df878025463e8cfc5dc46bce63c9cdcf.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:2200
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2200 -s 936
  2⤵
  - Program crash
  PID:2880

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/2200-0-0x0000000001030000-0x0000000001542000-memory.dmp

Filesize
5.1MB

Download
memory/2200-1-0x0000000076FE0000-0x0000000076FE2000-memory.dmp

Filesize
8KB

Download
memory/2200-2-0x0000000001031000-0x000000000127A000-memory.dmp

Filesize
2.3MB

Download
memory/2200-3-0x0000000001030000-0x0000000001542000-memory.dmp

Filesize
5.1MB

Download
memory/2200-4-0x0000000001030000-0x0000000001542000-memory.dmp

Filesize
5.1MB

Download
memory/2200-5-0x0000000001031000-0x000000000127A000-memory.dmp

Filesize
2.3MB

Download
memory/2200-6-0x0000000001030000-0x0000000001542000-memory.dmp

Filesize
5.1MB

Download
memory/2200-7-0x0000000001030000-0x0000000001542000-memory.dmp

Filesize
5.1MB

Download
memory/2200-8-0x0000000001030000-0x0000000001542000-memory.dmp

Filesize
5.1MB

Download
memory/2200-9-0x0000000001030000-0x0000000001542000-memory.dmp

Filesize
5.1MB

Download
memory/2200-10-0x0000000001030000-0x0000000001542000-memory.dmp

Filesize
5.1MB

Download
memory/2200-11-0x0000000001030000-0x0000000001542000-memory.dmp

Filesize
5.1MB

Download
memory/2200-12-0x0000000001030000-0x0000000001542000-memory.dmp

Filesize
5.1MB

Download
memory/2200-13-0x0000000001031000-0x000000000127A000-memory.dmp

Filesize
2.3MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads