stealc | 0631e354a91ce8c60c3609b2ef4a363e53732a2e370bb1ac4acbfbfbb07a952b

General

Target

0631e354a91ce8c60c3609b2ef4a363e53732a2e370bb1ac4acbfbfbb07a952b.exe
Size

2.8MB
MD5

85462068443c8830f86bdef3566988b0
SHA1

6cabd6a61c1825f22f58c191476ae60b5a8e70cf
SHA256

0631e354a91ce8c60c3609b2ef4a363e53732a2e370bb1ac4acbfbfbb07a952b
SHA512

834bf2315ec536d7f111a18f67ef462675359df6559138ca942a41c5bd460a468b3b69a3e3341c3c9207cb1bd3f8c720652fee4ecf348f6dd5344cc303aba30d
SSDEEP

49152:snubKIoJASeUqL5Bu4z/rM7JtA3MTIJ0:5KIoJASeUcnw7Qu

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__	0631e354a91ce8c60c3609b2ef4a363e53732a2e370bb1ac4acbfbfbb07a952b.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	0631e354a91ce8c60c3609b2ef4a363e53732a2e370bb1ac4acbfbfbb07a952b.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	0631e354a91ce8c60c3609b2ef4a363e53732a2e370bb1ac4acbfbfbb07a952b.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-1-5-21-3756129449-3121373848-4276368241-1000\Software\Wine	0631e354a91ce8c60c3609b2ef4a363e53732a2e370bb1ac4acbfbfbb07a952b.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
1124	0631e354a91ce8c60c3609b2ef4a363e53732a2e370bb1ac4acbfbfbb07a952b.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
3920	1124	WerFault.exe	81

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	0631e354a91ce8c60c3609b2ef4a363e53732a2e370bb1ac4acbfbfbb07a952b.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	0631e354a91ce8c60c3609b2ef4a363e53732a2e370bb1ac4acbfbfbb07a952b.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	0631e354a91ce8c60c3609b2ef4a363e53732a2e370bb1ac4acbfbfbb07a952b.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
1124	0631e354a91ce8c60c3609b2ef4a363e53732a2e370bb1ac4acbfbfbb07a952b.exe
1124	0631e354a91ce8c60c3609b2ef4a363e53732a2e370bb1ac4acbfbfbb07a952b.exe
1124	0631e354a91ce8c60c3609b2ef4a363e53732a2e370bb1ac4acbfbfbb07a952b.exe
1124	0631e354a91ce8c60c3609b2ef4a363e53732a2e370bb1ac4acbfbfbb07a952b.exe

C:\Users\Admin\AppData\Local\Temp\0631e354a91ce8c60c3609b2ef4a363e53732a2e370bb1ac4acbfbfbb07a952b.exe
"C:\Users\Admin\AppData\Local\Temp\0631e354a91ce8c60c3609b2ef4a363e53732a2e370bb1ac4acbfbfbb07a952b.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:1124
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1124 -s 1476
  2⤵
  - Program crash
  PID:3920

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 1124 -ip 1124
1⤵
PID:3672

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/1124-0-0x0000000000400000-0x00000000008FB000-memory.dmp

Filesize
5.0MB

Download
memory/1124-1-0x00000000773F4000-0x00000000773F6000-memory.dmp

Filesize
8KB

Download
memory/1124-2-0x0000000000401000-0x0000000000418000-memory.dmp

Filesize
92KB

Download
memory/1124-3-0x0000000000400000-0x00000000008FB000-memory.dmp

Filesize
5.0MB

Download
memory/1124-4-0x0000000000400000-0x00000000008FB000-memory.dmp

Filesize
5.0MB

Download
memory/1124-5-0x0000000000400000-0x00000000008FB000-memory.dmp

Filesize
5.0MB

Download
memory/1124-6-0x0000000000400000-0x00000000008FB000-memory.dmp

Filesize
5.0MB

Download
memory/1124-7-0x0000000000400000-0x00000000008FB000-memory.dmp

Filesize
5.0MB

Download
memory/1124-8-0x0000000000400000-0x00000000008FB000-memory.dmp

Filesize
5.0MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads