stealc | 55a6c04ca7724acad83455b0a8d511c8d441db88f0400b9561d28ce99328651f

Analysis

max time kernel
15s
max time network
17s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
20-12-2024 06:18

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General

Target

55a6c04ca7724acad83455b0a8d511c8d441db88f0400b9561d28ce99328651fN.exe
Size

2.8MB
MD5

da93826871d0494e34217aa103204590
SHA1

2ad0fc0b3ccd0e94d9f6fed37eda17b78b974e7a
SHA256

55a6c04ca7724acad83455b0a8d511c8d441db88f0400b9561d28ce99328651f
SHA512

78eb291bbefee07a5a8b4ccaf0a0a2f7ba808f7ac9a0eabbcec67e1d94076f4ff8fbb2508947b708bcc0a8691c7f94c02770a93346d582c390a80ae48845dee2
SSDEEP

49152:lVDwwgoR9EGV1gTxZ/vjNzdrqZ8HS1nDunYxV3j9tn:vDwwgoR9RV1gVZ3jNzdrPKKY/TDn

Score

10^/10

stealc stok discovery evasion stealer

Malware Config

Extracted

Family

stealc

Botnet

stok

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__	55a6c04ca7724acad83455b0a8d511c8d441db88f0400b9561d28ce99328651fN.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	55a6c04ca7724acad83455b0a8d511c8d441db88f0400b9561d28ce99328651fN.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	55a6c04ca7724acad83455b0a8d511c8d441db88f0400b9561d28ce99328651fN.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-1-5-21-312935884-697965778-3955649944-1000\Software\Wine	55a6c04ca7724acad83455b0a8d511c8d441db88f0400b9561d28ce99328651fN.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs

pid	Process
1708	55a6c04ca7724acad83455b0a8d511c8d441db88f0400b9561d28ce99328651fN.exe

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	55a6c04ca7724acad83455b0a8d511c8d441db88f0400b9561d28ce99328651fN.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
1708	55a6c04ca7724acad83455b0a8d511c8d441db88f0400b9561d28ce99328651fN.exe

C:\Users\Admin\AppData\Local\Temp\55a6c04ca7724acad83455b0a8d511c8d441db88f0400b9561d28ce99328651fN.exe
"C:\Users\Admin\AppData\Local\Temp\55a6c04ca7724acad83455b0a8d511c8d441db88f0400b9561d28ce99328651fN.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
- Suspicious behavior: EnumeratesProcesses
PID:1708

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Virtualization/Sandbox Evasion

T1497

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Virtualization/Sandbox Evasion

T1497

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/1708-0-0x00000000013B0000-0x00000000018A9000-memory.dmp

Filesize
5.0MB

Download
memory/1708-1-0x0000000077040000-0x0000000077042000-memory.dmp

Filesize
8KB

Download
memory/1708-2-0x00000000013B1000-0x00000000013C8000-memory.dmp

Filesize
92KB

Download
memory/1708-3-0x00000000013B0000-0x00000000018A9000-memory.dmp

Filesize
5.0MB

Download
memory/1708-5-0x00000000013B0000-0x00000000018A9000-memory.dmp

Filesize
5.0MB

Download