stealc | 04bce38ba335bde88809ba5fe04305e33fcd5e7c0977b1ec12a1d1861f12b922

General

Target

04bce38ba335bde88809ba5fe04305e33fcd5e7c0977b1ec12a1d1861f12b922.exe
Size

4.9MB
MD5

3ed9ed7eab5e48b5f2e341c59a2a31d8
SHA1

038d40dc46a92b479d032cf0b347f188e271a876
SHA256

04bce38ba335bde88809ba5fe04305e33fcd5e7c0977b1ec12a1d1861f12b922
SHA512

de7ff374e21b48cfa5f11bc465ab52725b944a25a36d778cd03d490220695092bbac5ed13521e1f48ada6519bccd9c52695a09c1890f0ed10c2008f7aefb17fb
SSDEEP

49152:PykEezi9S4fb/nWws9tXVKHS1Jv+TVHd0qbJFR/W6Bzm8:PRJzio4fSws9tXbLG5Hi6I8

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__	04bce38ba335bde88809ba5fe04305e33fcd5e7c0977b1ec12a1d1861f12b922.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	04bce38ba335bde88809ba5fe04305e33fcd5e7c0977b1ec12a1d1861f12b922.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	04bce38ba335bde88809ba5fe04305e33fcd5e7c0977b1ec12a1d1861f12b922.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-1-5-21-3551809350-4263495960-1443967649-1000\Software\Wine	04bce38ba335bde88809ba5fe04305e33fcd5e7c0977b1ec12a1d1861f12b922.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
2860	04bce38ba335bde88809ba5fe04305e33fcd5e7c0977b1ec12a1d1861f12b922.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
2968	2860	WerFault.exe	30

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	04bce38ba335bde88809ba5fe04305e33fcd5e7c0977b1ec12a1d1861f12b922.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	04bce38ba335bde88809ba5fe04305e33fcd5e7c0977b1ec12a1d1861f12b922.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	04bce38ba335bde88809ba5fe04305e33fcd5e7c0977b1ec12a1d1861f12b922.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2860	04bce38ba335bde88809ba5fe04305e33fcd5e7c0977b1ec12a1d1861f12b922.exe
2860	04bce38ba335bde88809ba5fe04305e33fcd5e7c0977b1ec12a1d1861f12b922.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2860 wrote to memory of 2968	2860	04bce38ba335bde88809ba5fe04305e33fcd5e7c0977b1ec12a1d1861f12b922.exe	32
PID 2860 wrote to memory of 2968	2860	04bce38ba335bde88809ba5fe04305e33fcd5e7c0977b1ec12a1d1861f12b922.exe	32
PID 2860 wrote to memory of 2968	2860	04bce38ba335bde88809ba5fe04305e33fcd5e7c0977b1ec12a1d1861f12b922.exe	32
PID 2860 wrote to memory of 2968	2860	04bce38ba335bde88809ba5fe04305e33fcd5e7c0977b1ec12a1d1861f12b922.exe	32

C:\Users\Admin\AppData\Local\Temp\04bce38ba335bde88809ba5fe04305e33fcd5e7c0977b1ec12a1d1861f12b922.exe
"C:\Users\Admin\AppData\Local\Temp\04bce38ba335bde88809ba5fe04305e33fcd5e7c0977b1ec12a1d1861f12b922.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:2860
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2860 -s 936
  2⤵
  - Program crash
  PID:2968

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/2860-0-0x0000000000880000-0x0000000000D6D000-memory.dmp

Filesize
4.9MB

Download
memory/2860-1-0x0000000077CA0000-0x0000000077CA2000-memory.dmp

Filesize
8KB

Download
memory/2860-2-0x0000000000881000-0x0000000000ACA000-memory.dmp

Filesize
2.3MB

Download
memory/2860-3-0x0000000000880000-0x0000000000D6D000-memory.dmp

Filesize
4.9MB

Download
memory/2860-4-0x0000000000880000-0x0000000000D6D000-memory.dmp

Filesize
4.9MB

Download
memory/2860-5-0x0000000000881000-0x0000000000ACA000-memory.dmp

Filesize
2.3MB

Download
memory/2860-6-0x0000000000880000-0x0000000000D6D000-memory.dmp

Filesize
4.9MB

Download
memory/2860-7-0x0000000000880000-0x0000000000D6D000-memory.dmp

Filesize
4.9MB

Download
memory/2860-8-0x0000000000880000-0x0000000000D6D000-memory.dmp

Filesize
4.9MB

Download
memory/2860-9-0x0000000000880000-0x0000000000D6D000-memory.dmp

Filesize
4.9MB

Download
memory/2860-10-0x0000000000880000-0x0000000000D6D000-memory.dmp

Filesize
4.9MB

Download
memory/2860-11-0x0000000000880000-0x0000000000D6D000-memory.dmp

Filesize
4.9MB

Download
memory/2860-13-0x0000000000880000-0x0000000000D6D000-memory.dmp

Filesize
4.9MB

Download
memory/2860-14-0x0000000000881000-0x0000000000ACA000-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