stealc | 03f9a14fb9fcfc10310a90c95600a851a386a1b94262f57d8a1947b0a71876c2

General

Target

03f9a14fb9fcfc10310a90c95600a851a386a1b94262f57d8a1947b0a71876c2.exe
Size

1.8MB
MD5

ee2a93fceb35b772cb6f99409215466e
SHA1

edf8566a7959c043f924bb1f59dedf139219dcbc
SHA256

03f9a14fb9fcfc10310a90c95600a851a386a1b94262f57d8a1947b0a71876c2
SHA512

3f1c77989af99721de4a45ca9a20a23967f2e342b44833a17ea84b32147d5cada4a42b05b6988d056ee1ccb0ea91d0fd8c7ffb975cb0ff03adacf4edccfe6633
SSDEEP

49152:JEn+NPFOYw15eXT954St1LMg9zZPj08R:GnxqZ+SYg9zZP

Score

10^/10

stealc brat defense_evasion discovery stealer

Malware Config

Extracted

Family

stealc

Botnet

brat

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

defense_evasion

Query Registry

T1012

Virtualization/Sandbox Evasion

T1497

description	ioc	Process
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	03f9a14fb9fcfc10310a90c95600a851a386a1b94262f57d8a1947b0a71876c2.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	03f9a14fb9fcfc10310a90c95600a851a386a1b94262f57d8a1947b0a71876c2.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	03f9a14fb9fcfc10310a90c95600a851a386a1b94262f57d8a1947b0a71876c2.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-1-5-21-3442511616-637977696-3186306149-1000\Software\Wine	03f9a14fb9fcfc10310a90c95600a851a386a1b94262f57d8a1947b0a71876c2.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
3204	03f9a14fb9fcfc10310a90c95600a851a386a1b94262f57d8a1947b0a71876c2.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
1740	3204	WerFault.exe	81

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	03f9a14fb9fcfc10310a90c95600a851a386a1b94262f57d8a1947b0a71876c2.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	03f9a14fb9fcfc10310a90c95600a851a386a1b94262f57d8a1947b0a71876c2.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	03f9a14fb9fcfc10310a90c95600a851a386a1b94262f57d8a1947b0a71876c2.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
3204	03f9a14fb9fcfc10310a90c95600a851a386a1b94262f57d8a1947b0a71876c2.exe
3204	03f9a14fb9fcfc10310a90c95600a851a386a1b94262f57d8a1947b0a71876c2.exe
3204	03f9a14fb9fcfc10310a90c95600a851a386a1b94262f57d8a1947b0a71876c2.exe
3204	03f9a14fb9fcfc10310a90c95600a851a386a1b94262f57d8a1947b0a71876c2.exe

C:\Users\Admin\AppData\Local\Temp\03f9a14fb9fcfc10310a90c95600a851a386a1b94262f57d8a1947b0a71876c2.exe
"C:\Users\Admin\AppData\Local\Temp\03f9a14fb9fcfc10310a90c95600a851a386a1b94262f57d8a1947b0a71876c2.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:3204
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3204 -s 1472
  2⤵
  - Program crash
  PID:1740

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 208 -p 3204 -ip 3204
1⤵
PID:2136

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

Replay Monitor

Loading Replay Monitor...

Downloads

memory/3204-0-0x0000000000C20000-0x00000000012CC000-memory.dmp

Filesize
6.7MB

Download
memory/3204-1-0x00000000777B4000-0x00000000777B6000-memory.dmp

Filesize
8KB

Download
memory/3204-2-0x0000000000C21000-0x0000000000C38000-memory.dmp

Filesize
92KB

Download
memory/3204-3-0x0000000000C20000-0x00000000012CC000-memory.dmp

Filesize
6.7MB

Download
memory/3204-4-0x0000000000C20000-0x00000000012CC000-memory.dmp

Filesize
6.7MB

Download
memory/3204-5-0x0000000000C20000-0x00000000012CC000-memory.dmp

Filesize
6.7MB

Download
memory/3204-6-0x0000000000C20000-0x00000000012CC000-memory.dmp

Filesize
6.7MB

Download
memory/3204-7-0x0000000000C20000-0x00000000012CC000-memory.dmp

Filesize
6.7MB

Download
memory/3204-8-0x0000000000C20000-0x00000000012CC000-memory.dmp

Filesize
6.7MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads