stealc | f1fa0545bde183d84cb9b24d6635ffb5ab98bd398659e92adcbb5dc90064531d

Analysis

max time kernel
119s
max time network
120s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
19-12-2024 02:23

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General

Target

f1fa0545bde183d84cb9b24d6635ffb5ab98bd398659e92adcbb5dc90064531d.exe
Size

2.8MB
MD5

dfc4ac821d77ac74e88a8d6806f3b381
SHA1

328c4646185f83623b64acc275314337cb8507af
SHA256

f1fa0545bde183d84cb9b24d6635ffb5ab98bd398659e92adcbb5dc90064531d
SHA512

5aee1cf473a623a0b6c659a337d1960e395d67c94fc54a230b9b70936f2ad2bf983547f9c76e13ff20c37fb34dd8185cd8e5d96979f91f9749626e6fa902a2fe
SSDEEP

49152:dtv9RVRs4ysgYlKSDNYudvfckBawllV1SBdC+6iK:dDRV9ysgYlKSDCuJckBawzVmn6i

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__	f1fa0545bde183d84cb9b24d6635ffb5ab98bd398659e92adcbb5dc90064531d.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	f1fa0545bde183d84cb9b24d6635ffb5ab98bd398659e92adcbb5dc90064531d.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	f1fa0545bde183d84cb9b24d6635ffb5ab98bd398659e92adcbb5dc90064531d.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-1-5-21-3290804112-2823094203-3137964600-1000\Software\Wine	f1fa0545bde183d84cb9b24d6635ffb5ab98bd398659e92adcbb5dc90064531d.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs

pid	Process
1552	f1fa0545bde183d84cb9b24d6635ffb5ab98bd398659e92adcbb5dc90064531d.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	f1fa0545bde183d84cb9b24d6635ffb5ab98bd398659e92adcbb5dc90064531d.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
1552	f1fa0545bde183d84cb9b24d6635ffb5ab98bd398659e92adcbb5dc90064531d.exe

C:\Users\Admin\AppData\Local\Temp\f1fa0545bde183d84cb9b24d6635ffb5ab98bd398659e92adcbb5dc90064531d.exe
"C:\Users\Admin\AppData\Local\Temp\f1fa0545bde183d84cb9b24d6635ffb5ab98bd398659e92adcbb5dc90064531d.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:1552

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

Replay Monitor

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Downloads

memory/1552-0-0x0000000000150000-0x0000000000652000-memory.dmp

Filesize
5.0MB

Download
memory/1552-1-0x00000000778F0000-0x00000000778F2000-memory.dmp

Filesize
8KB

Download
memory/1552-2-0x0000000000151000-0x0000000000168000-memory.dmp

Filesize
92KB

Download
memory/1552-3-0x0000000000150000-0x0000000000652000-memory.dmp

Filesize
5.0MB

Download
memory/1552-4-0x0000000000150000-0x0000000000652000-memory.dmp

Filesize
5.0MB

Download