stealc | a0aac9a98da66e68dcedd48ad1d9d657c6e4107ea409745fdfa1cf4eacff9697

General

Target

a0aac9a98da66e68dcedd48ad1d9d657c6e4107ea409745fdfa1cf4eacff9697.exe
Size

4.9MB
MD5

41e972777ac93aeb1727ff9cefea7fd6
SHA1

d4540eaab8030fdf99844bed4437769e12a89269
SHA256

a0aac9a98da66e68dcedd48ad1d9d657c6e4107ea409745fdfa1cf4eacff9697
SHA512

e6c262d7268c8743ad1cdd0c59e53c83854079b4019f901ac972a1531e4f78d3c897d464218655243ac15091a9e2ab320d392f0e1eef362fdc50d3dd4f24b662
SSDEEP

98304:Ig7HKSxSmAxaoG2Oc0vV69FkKYdPr7vD:P7H8q317D

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__	a0aac9a98da66e68dcedd48ad1d9d657c6e4107ea409745fdfa1cf4eacff9697.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	a0aac9a98da66e68dcedd48ad1d9d657c6e4107ea409745fdfa1cf4eacff9697.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	a0aac9a98da66e68dcedd48ad1d9d657c6e4107ea409745fdfa1cf4eacff9697.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	a0aac9a98da66e68dcedd48ad1d9d657c6e4107ea409745fdfa1cf4eacff9697.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
2348	a0aac9a98da66e68dcedd48ad1d9d657c6e4107ea409745fdfa1cf4eacff9697.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
2832	2348	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	a0aac9a98da66e68dcedd48ad1d9d657c6e4107ea409745fdfa1cf4eacff9697.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	a0aac9a98da66e68dcedd48ad1d9d657c6e4107ea409745fdfa1cf4eacff9697.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	a0aac9a98da66e68dcedd48ad1d9d657c6e4107ea409745fdfa1cf4eacff9697.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2348	a0aac9a98da66e68dcedd48ad1d9d657c6e4107ea409745fdfa1cf4eacff9697.exe
2348	a0aac9a98da66e68dcedd48ad1d9d657c6e4107ea409745fdfa1cf4eacff9697.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2348 wrote to memory of 2832	2348	a0aac9a98da66e68dcedd48ad1d9d657c6e4107ea409745fdfa1cf4eacff9697.exe	32
PID 2348 wrote to memory of 2832	2348	a0aac9a98da66e68dcedd48ad1d9d657c6e4107ea409745fdfa1cf4eacff9697.exe	32
PID 2348 wrote to memory of 2832	2348	a0aac9a98da66e68dcedd48ad1d9d657c6e4107ea409745fdfa1cf4eacff9697.exe	32
PID 2348 wrote to memory of 2832	2348	a0aac9a98da66e68dcedd48ad1d9d657c6e4107ea409745fdfa1cf4eacff9697.exe	32

C:\Users\Admin\AppData\Local\Temp\a0aac9a98da66e68dcedd48ad1d9d657c6e4107ea409745fdfa1cf4eacff9697.exe
"C:\Users\Admin\AppData\Local\Temp\a0aac9a98da66e68dcedd48ad1d9d657c6e4107ea409745fdfa1cf4eacff9697.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:2348
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2348 -s 940
  2⤵
  - Program crash
  PID:2832

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/2348-0-0x00000000002B0000-0x00000000007A1000-memory.dmp

Filesize
4.9MB

Download
memory/2348-1-0x0000000077BA0000-0x0000000077BA2000-memory.dmp

Filesize
8KB

Download
memory/2348-2-0x00000000002B1000-0x00000000004FA000-memory.dmp

Filesize
2.3MB

Download
memory/2348-3-0x00000000002B0000-0x00000000007A1000-memory.dmp

Filesize
4.9MB

Download
memory/2348-4-0x00000000002B0000-0x00000000007A1000-memory.dmp

Filesize
4.9MB

Download
memory/2348-5-0x00000000002B1000-0x00000000004FA000-memory.dmp

Filesize
2.3MB

Download
memory/2348-6-0x00000000002B0000-0x00000000007A1000-memory.dmp

Filesize
4.9MB

Download
memory/2348-7-0x00000000002B0000-0x00000000007A1000-memory.dmp

Filesize
4.9MB

Download
memory/2348-8-0x00000000002B0000-0x00000000007A1000-memory.dmp

Filesize
4.9MB

Download
memory/2348-9-0x00000000002B0000-0x00000000007A1000-memory.dmp

Filesize
4.9MB

Download
memory/2348-10-0x00000000002B0000-0x00000000007A1000-memory.dmp

Filesize
4.9MB

Download
memory/2348-11-0x00000000002B0000-0x00000000007A1000-memory.dmp

Filesize
4.9MB

Download
memory/2348-12-0x00000000002B0000-0x00000000007A1000-memory.dmp

Filesize
4.9MB

Download
memory/2348-13-0x00000000002B1000-0x00000000004FA000-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