stealc | da3f8f932d7b936103b4453623b13df2e645d061c96f422dc4f59bf6fa36ad89

General

Target

da3f8f932d7b936103b4453623b13df2e645d061c96f422dc4f59bf6fa36ad89.exe
Size

4.9MB
MD5

571266c8ff537a2ee5bcc405ee329b83
SHA1

b693082439eb9c431c0dcf3742af04e846dc13c6
SHA256

da3f8f932d7b936103b4453623b13df2e645d061c96f422dc4f59bf6fa36ad89
SHA512

3bb54ca6d702aab58adacca199e1cbd85cc3d103e61161439443ba7d86063ebdb9d4c5db3d3caa91e0797fc53815f3eeda3777fe7e53d2ba5d2aff3f21d224c0
SSDEEP

49152:i5rJ+4qkjUsTM9Mmo0W22kHDsVDY0B7jAG+H8QQDdmznTWqd5XVc:krJ+vkIsTMW/0vhsVDFL+crmzny

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__	da3f8f932d7b936103b4453623b13df2e645d061c96f422dc4f59bf6fa36ad89.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	da3f8f932d7b936103b4453623b13df2e645d061c96f422dc4f59bf6fa36ad89.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	da3f8f932d7b936103b4453623b13df2e645d061c96f422dc4f59bf6fa36ad89.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-1-5-21-4089630652-1596403869-279772308-1000\Software\Wine	da3f8f932d7b936103b4453623b13df2e645d061c96f422dc4f59bf6fa36ad89.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
1620	da3f8f932d7b936103b4453623b13df2e645d061c96f422dc4f59bf6fa36ad89.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
3960	1620	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	da3f8f932d7b936103b4453623b13df2e645d061c96f422dc4f59bf6fa36ad89.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	da3f8f932d7b936103b4453623b13df2e645d061c96f422dc4f59bf6fa36ad89.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	da3f8f932d7b936103b4453623b13df2e645d061c96f422dc4f59bf6fa36ad89.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
1620	da3f8f932d7b936103b4453623b13df2e645d061c96f422dc4f59bf6fa36ad89.exe
1620	da3f8f932d7b936103b4453623b13df2e645d061c96f422dc4f59bf6fa36ad89.exe
1620	da3f8f932d7b936103b4453623b13df2e645d061c96f422dc4f59bf6fa36ad89.exe
1620	da3f8f932d7b936103b4453623b13df2e645d061c96f422dc4f59bf6fa36ad89.exe

C:\Users\Admin\AppData\Local\Temp\da3f8f932d7b936103b4453623b13df2e645d061c96f422dc4f59bf6fa36ad89.exe
"C:\Users\Admin\AppData\Local\Temp\da3f8f932d7b936103b4453623b13df2e645d061c96f422dc4f59bf6fa36ad89.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:1620
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1620 -s 1480
  2⤵
  - Program crash
  PID:3960

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 360 -p 1620 -ip 1620
1⤵
PID:2276

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/1620-0-0x0000000000E40000-0x0000000001333000-memory.dmp

Filesize
4.9MB

Download
memory/1620-1-0x0000000077374000-0x0000000077376000-memory.dmp

Filesize
8KB

Download
memory/1620-2-0x0000000000E41000-0x000000000108A000-memory.dmp

Filesize
2.3MB

Download
memory/1620-3-0x0000000000E40000-0x0000000001333000-memory.dmp

Filesize
4.9MB

Download
memory/1620-4-0x0000000000E40000-0x0000000001333000-memory.dmp

Filesize
4.9MB

Download
memory/1620-5-0x0000000000E41000-0x000000000108A000-memory.dmp

Filesize
2.3MB

Download
memory/1620-6-0x0000000000E40000-0x0000000001333000-memory.dmp

Filesize
4.9MB

Download
memory/1620-7-0x0000000000E40000-0x0000000001333000-memory.dmp

Filesize
4.9MB

Download
memory/1620-8-0x0000000000E40000-0x0000000001333000-memory.dmp

Filesize
4.9MB

Download
memory/1620-9-0x0000000000E40000-0x0000000001333000-memory.dmp

Filesize
4.9MB

Download
memory/1620-10-0x0000000000E41000-0x000000000108A000-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