stealc | 615739515e50ebb3375034f3116aaec9075754873d835910adfc56bdb66a7733

General

Target

615739515e50ebb3375034f3116aaec9075754873d835910adfc56bdb66a7733.exe
Size

2.8MB
MD5

c6290b9ed32a91607cd47002a7455bc7
SHA1

b9e8753a3f16239320eaa78968561f34832918ee
SHA256

615739515e50ebb3375034f3116aaec9075754873d835910adfc56bdb66a7733
SHA512

b7ce4f23067f7c98566473591d5c547e214e00b0df2ebb360425326d04fcd744ae3b0984679c6b1825a16e57f02901b74dce2a81e9ff5d9b226bda1f76cda7cd
SSDEEP

49152:dc05s+hHp6wuSg7Dw2lJow+0SB0jEF/9nbMS4n:qAs8Hp6wuSg7Dw2Xovqj+/NbM

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__	615739515e50ebb3375034f3116aaec9075754873d835910adfc56bdb66a7733.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	615739515e50ebb3375034f3116aaec9075754873d835910adfc56bdb66a7733.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	615739515e50ebb3375034f3116aaec9075754873d835910adfc56bdb66a7733.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-1-5-21-2039016743-699959520-214465309-1000\Software\Wine	615739515e50ebb3375034f3116aaec9075754873d835910adfc56bdb66a7733.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
2620	615739515e50ebb3375034f3116aaec9075754873d835910adfc56bdb66a7733.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
2700	2620	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	615739515e50ebb3375034f3116aaec9075754873d835910adfc56bdb66a7733.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	615739515e50ebb3375034f3116aaec9075754873d835910adfc56bdb66a7733.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	615739515e50ebb3375034f3116aaec9075754873d835910adfc56bdb66a7733.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2620	615739515e50ebb3375034f3116aaec9075754873d835910adfc56bdb66a7733.exe
2620	615739515e50ebb3375034f3116aaec9075754873d835910adfc56bdb66a7733.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2620 wrote to memory of 2700	2620	615739515e50ebb3375034f3116aaec9075754873d835910adfc56bdb66a7733.exe	32
PID 2620 wrote to memory of 2700	2620	615739515e50ebb3375034f3116aaec9075754873d835910adfc56bdb66a7733.exe	32
PID 2620 wrote to memory of 2700	2620	615739515e50ebb3375034f3116aaec9075754873d835910adfc56bdb66a7733.exe	32
PID 2620 wrote to memory of 2700	2620	615739515e50ebb3375034f3116aaec9075754873d835910adfc56bdb66a7733.exe	32

C:\Users\Admin\AppData\Local\Temp\615739515e50ebb3375034f3116aaec9075754873d835910adfc56bdb66a7733.exe
"C:\Users\Admin\AppData\Local\Temp\615739515e50ebb3375034f3116aaec9075754873d835910adfc56bdb66a7733.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:2620
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2620 -s 932
  2⤵
  - Program crash
  PID:2700

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/2620-0-0x00000000003D0000-0x00000000008CB000-memory.dmp

Filesize
5.0MB

Download
memory/2620-1-0x00000000777A0000-0x00000000777A2000-memory.dmp

Filesize
8KB

Download
memory/2620-2-0x00000000003D1000-0x00000000003E8000-memory.dmp

Filesize
92KB

Download
memory/2620-3-0x00000000003D0000-0x00000000008CB000-memory.dmp

Filesize
5.0MB

Download
memory/2620-4-0x00000000003D0000-0x00000000008CB000-memory.dmp

Filesize
5.0MB

Download
memory/2620-5-0x00000000003D0000-0x00000000008CB000-memory.dmp

Filesize
5.0MB

Download
memory/2620-6-0x00000000003D0000-0x00000000008CB000-memory.dmp

Filesize
5.0MB

Download
memory/2620-7-0x00000000003D0000-0x00000000008CB000-memory.dmp

Filesize
5.0MB

Download
memory/2620-8-0x00000000003D0000-0x00000000008CB000-memory.dmp

Filesize
5.0MB

Download
memory/2620-9-0x00000000003D0000-0x00000000008CB000-memory.dmp

Filesize
5.0MB

Download
memory/2620-10-0x00000000003D0000-0x00000000008CB000-memory.dmp

Filesize
5.0MB

Download
memory/2620-11-0x00000000003D0000-0x00000000008CB000-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