stealc | aec90bd30373ef50bba0ea7fccb2d78a31fd04b15416e6f2da2bb265b65195c0

General

Target

aec90bd30373ef50bba0ea7fccb2d78a31fd04b15416e6f2da2bb265b65195c0.exe
Size

4.9MB
MD5

4383f739a65a658dc10c560d32e74eea
SHA1

f84f5c17726fd71df9f8124d4764200ef226b4d4
SHA256

aec90bd30373ef50bba0ea7fccb2d78a31fd04b15416e6f2da2bb265b65195c0
SHA512

950f00729d3e40e73d1afb1dea1845b360ea16a95c597e5b39475263a93a226b964a2cbead83a4a9aba30acafef77fa2340673ccca73d9faf020194979b1c5f2
SSDEEP

24576:3mAX1HENRDg+JPzPdt4KvB4OVl8GKLq6NdgBeLEj1YWYbZdmzSAvyvhKJlXB0LEa:3mLo+1ztm4KxWYbZdPAvy+l+9ixBMxl

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__	aec90bd30373ef50bba0ea7fccb2d78a31fd04b15416e6f2da2bb265b65195c0.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	aec90bd30373ef50bba0ea7fccb2d78a31fd04b15416e6f2da2bb265b65195c0.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	aec90bd30373ef50bba0ea7fccb2d78a31fd04b15416e6f2da2bb265b65195c0.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-1-5-21-3533259084-2542256011-65585152-1000\Software\Wine	aec90bd30373ef50bba0ea7fccb2d78a31fd04b15416e6f2da2bb265b65195c0.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
1884	aec90bd30373ef50bba0ea7fccb2d78a31fd04b15416e6f2da2bb265b65195c0.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
604	1884	WerFault.exe	27

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	aec90bd30373ef50bba0ea7fccb2d78a31fd04b15416e6f2da2bb265b65195c0.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	aec90bd30373ef50bba0ea7fccb2d78a31fd04b15416e6f2da2bb265b65195c0.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	aec90bd30373ef50bba0ea7fccb2d78a31fd04b15416e6f2da2bb265b65195c0.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
1884	aec90bd30373ef50bba0ea7fccb2d78a31fd04b15416e6f2da2bb265b65195c0.exe
1884	aec90bd30373ef50bba0ea7fccb2d78a31fd04b15416e6f2da2bb265b65195c0.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 1884 wrote to memory of 604	1884	aec90bd30373ef50bba0ea7fccb2d78a31fd04b15416e6f2da2bb265b65195c0.exe	31
PID 1884 wrote to memory of 604	1884	aec90bd30373ef50bba0ea7fccb2d78a31fd04b15416e6f2da2bb265b65195c0.exe	31
PID 1884 wrote to memory of 604	1884	aec90bd30373ef50bba0ea7fccb2d78a31fd04b15416e6f2da2bb265b65195c0.exe	31
PID 1884 wrote to memory of 604	1884	aec90bd30373ef50bba0ea7fccb2d78a31fd04b15416e6f2da2bb265b65195c0.exe	31

C:\Users\Admin\AppData\Local\Temp\aec90bd30373ef50bba0ea7fccb2d78a31fd04b15416e6f2da2bb265b65195c0.exe
"C:\Users\Admin\AppData\Local\Temp\aec90bd30373ef50bba0ea7fccb2d78a31fd04b15416e6f2da2bb265b65195c0.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:1884
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1884 -s 928
  2⤵
  - Program crash
  PID:604

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

Replay Monitor

Loading Replay Monitor...

Downloads

memory/1884-0-0x00000000002F0000-0x00000000007E4000-memory.dmp

Filesize
5.0MB

Download
memory/1884-1-0x00000000770D0000-0x00000000770D2000-memory.dmp

Filesize
8KB

Download
memory/1884-2-0x00000000002F1000-0x000000000053A000-memory.dmp

Filesize
2.3MB

Download
memory/1884-3-0x00000000002F0000-0x00000000007E4000-memory.dmp

Filesize
5.0MB

Download
memory/1884-4-0x00000000002F0000-0x00000000007E4000-memory.dmp

Filesize
5.0MB

Download
memory/1884-5-0x00000000002F1000-0x000000000053A000-memory.dmp

Filesize
2.3MB

Download
memory/1884-6-0x00000000002F0000-0x00000000007E4000-memory.dmp

Filesize
5.0MB

Download
memory/1884-7-0x00000000002F0000-0x00000000007E4000-memory.dmp

Filesize
5.0MB

Download
memory/1884-8-0x00000000002F0000-0x00000000007E4000-memory.dmp

Filesize
5.0MB

Download
memory/1884-9-0x00000000002F0000-0x00000000007E4000-memory.dmp

Filesize
5.0MB

Download
memory/1884-10-0x00000000002F0000-0x00000000007E4000-memory.dmp

Filesize
5.0MB

Download
memory/1884-11-0x00000000002F0000-0x00000000007E4000-memory.dmp

Filesize
5.0MB

Download
memory/1884-13-0x00000000002F1000-0x000000000053A000-memory.dmp

Filesize
2.3MB

Download
memory/1884-12-0x00000000002F0000-0x00000000007E4000-memory.dmp

Filesize
5.0MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads