stealc | ff806cd2ca764677afb33aebb9d394dccf2b1abc8852d5c3b31d086dd8159bde

Analysis

max time kernel
94s
max time network
138s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
23/01/2025, 18:19

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

ff806cd2ca764677afb33aebb9d394dccf2b1abc8852d5c3b31d086dd8159bde.exe
Size

1.7MB
MD5

07434946fb2d1c9e0edb2ef61a22aca9
SHA1

57edd9d375bbe0e22fa6705d48422df468d19c81
SHA256

ff806cd2ca764677afb33aebb9d394dccf2b1abc8852d5c3b31d086dd8159bde
SHA512

27aafb80895131022d29a5e0494ddef1c2efcd88b21a9a89c2ba400661e88110ec5c952aac071e21b00ed438fe614c3ac7323ee6e3742e16ccb3c4db50dcf308
SSDEEP

49152:+lrNYbm6gQHDrJwQoKObMrMV2/kV37ACTQlMhSmUPU:+lZYCq/JwcYiMkashU

Score

10^/10

stealc brat defense_evasion discovery stealer

Malware Config

Extracted

Family

stealc

Botnet

brat

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

defense_evasion

Query Registry

T1012

Virtualization/Sandbox Evasion

T1497

description	ioc	Process
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	ff806cd2ca764677afb33aebb9d394dccf2b1abc8852d5c3b31d086dd8159bde.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	ff806cd2ca764677afb33aebb9d394dccf2b1abc8852d5c3b31d086dd8159bde.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	ff806cd2ca764677afb33aebb9d394dccf2b1abc8852d5c3b31d086dd8159bde.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.

defense_evasion

Query Registry

T1012

Virtualization/Sandbox Evasion

T1497

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-940901362-3608833189-1915618603-1000\Software\Wine	ff806cd2ca764677afb33aebb9d394dccf2b1abc8852d5c3b31d086dd8159bde.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
4760	ff806cd2ca764677afb33aebb9d394dccf2b1abc8852d5c3b31d086dd8159bde.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
4076	4760	WerFault.exe	82

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	ff806cd2ca764677afb33aebb9d394dccf2b1abc8852d5c3b31d086dd8159bde.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	ff806cd2ca764677afb33aebb9d394dccf2b1abc8852d5c3b31d086dd8159bde.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	ff806cd2ca764677afb33aebb9d394dccf2b1abc8852d5c3b31d086dd8159bde.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
4760	ff806cd2ca764677afb33aebb9d394dccf2b1abc8852d5c3b31d086dd8159bde.exe
4760	ff806cd2ca764677afb33aebb9d394dccf2b1abc8852d5c3b31d086dd8159bde.exe
4760	ff806cd2ca764677afb33aebb9d394dccf2b1abc8852d5c3b31d086dd8159bde.exe
4760	ff806cd2ca764677afb33aebb9d394dccf2b1abc8852d5c3b31d086dd8159bde.exe

C:\Users\Admin\AppData\Local\Temp\ff806cd2ca764677afb33aebb9d394dccf2b1abc8852d5c3b31d086dd8159bde.exe
"C:\Users\Admin\AppData\Local\Temp\ff806cd2ca764677afb33aebb9d394dccf2b1abc8852d5c3b31d086dd8159bde.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
PID:4760
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4760 -s 1488
  2⤵
  - Program crash
  PID:4076

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 4760 -ip 4760
1⤵
PID:4236

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

Loading Replay Monitor...

Downloads

memory/4760-0-0x0000000000B20000-0x00000000011B9000-memory.dmp

Filesize
6.6MB

Download
memory/4760-1-0x00007FFE90390000-0x00007FFE90585000-memory.dmp

Filesize
2.0MB

Download
memory/4760-2-0x0000000000B20000-0x00000000011B9000-memory.dmp

Filesize
6.6MB

Download
memory/4760-3-0x00007FFE90390000-0x00007FFE90585000-memory.dmp

Filesize
2.0MB

Download
memory/4760-4-0x0000000000B20000-0x00000000011B9000-memory.dmp

Filesize
6.6MB

Download
memory/4760-5-0x0000000000B20000-0x00000000011B9000-memory.dmp

Filesize
6.6MB

Download
memory/4760-6-0x0000000000B20000-0x00000000011B9000-memory.dmp

Filesize
6.6MB

Download