stealc | 03bc86e0386518d5f0a1f425bb23faf848aae84bcf9ec7722da662e16415971b

General

Target

03bc86e0386518d5f0a1f425bb23faf848aae84bcf9ec7722da662e16415971b.exe
Size

2.7MB
MD5

f133453521fe781ba34c565fa05d5c17
SHA1

bc08dbfedab93a56e3f59d3dfd1deda8dc9c4fe1
SHA256

03bc86e0386518d5f0a1f425bb23faf848aae84bcf9ec7722da662e16415971b
SHA512

ec6a5d8b617c9b8b0f99f8d6ded1a78ca97e39440dc0f89aab85a4a703ba3c5b4d039df5d9fd5ff7fdc2434b62e2fd54c3230c3cefbbddf267c8be48023a7c7f
SSDEEP

49152:4sFK3wJ3KBDZjLFiLw+nvKW/DmxISZD2St/lKz9xS1:4qK3wJ3KBFLFilnvKmEZDn/Q9k

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__	03bc86e0386518d5f0a1f425bb23faf848aae84bcf9ec7722da662e16415971b.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	03bc86e0386518d5f0a1f425bb23faf848aae84bcf9ec7722da662e16415971b.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	03bc86e0386518d5f0a1f425bb23faf848aae84bcf9ec7722da662e16415971b.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-1-5-21-940901362-3608833189-1915618603-1000\Software\Wine	03bc86e0386518d5f0a1f425bb23faf848aae84bcf9ec7722da662e16415971b.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
748	03bc86e0386518d5f0a1f425bb23faf848aae84bcf9ec7722da662e16415971b.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
3796	748	WerFault.exe	82

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	03bc86e0386518d5f0a1f425bb23faf848aae84bcf9ec7722da662e16415971b.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	03bc86e0386518d5f0a1f425bb23faf848aae84bcf9ec7722da662e16415971b.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	03bc86e0386518d5f0a1f425bb23faf848aae84bcf9ec7722da662e16415971b.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
748	03bc86e0386518d5f0a1f425bb23faf848aae84bcf9ec7722da662e16415971b.exe
748	03bc86e0386518d5f0a1f425bb23faf848aae84bcf9ec7722da662e16415971b.exe
748	03bc86e0386518d5f0a1f425bb23faf848aae84bcf9ec7722da662e16415971b.exe
748	03bc86e0386518d5f0a1f425bb23faf848aae84bcf9ec7722da662e16415971b.exe

C:\Users\Admin\AppData\Local\Temp\03bc86e0386518d5f0a1f425bb23faf848aae84bcf9ec7722da662e16415971b.exe
"C:\Users\Admin\AppData\Local\Temp\03bc86e0386518d5f0a1f425bb23faf848aae84bcf9ec7722da662e16415971b.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:748
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 748 -s 1496
  2⤵
  - Program crash
  PID:3796

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 748 -ip 748
1⤵
PID:2340

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/748-0-0x00000000009B0000-0x0000000000EA6000-memory.dmp

Filesize
5.0MB

Download
memory/748-1-0x0000000077884000-0x0000000077886000-memory.dmp

Filesize
8KB

Download
memory/748-2-0x00000000009B1000-0x00000000009C8000-memory.dmp

Filesize
92KB

Download
memory/748-3-0x00000000009B0000-0x0000000000EA6000-memory.dmp

Filesize
5.0MB

Download
memory/748-4-0x00000000009B0000-0x0000000000EA6000-memory.dmp

Filesize
5.0MB

Download
memory/748-5-0x00000000009B0000-0x0000000000EA6000-memory.dmp

Filesize
5.0MB

Download
memory/748-6-0x00000000009B0000-0x0000000000EA6000-memory.dmp

Filesize
5.0MB

Download
memory/748-7-0x00000000009B0000-0x0000000000EA6000-memory.dmp

Filesize
5.0MB

Download
memory/748-8-0x00000000009B0000-0x0000000000EA6000-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