stealc | ad3b0cdf3edd2264fc40e1470537c7a6255077c7f2f0611cede7b66fb92e23cc

General

Target

ad3b0cdf3edd2264fc40e1470537c7a6255077c7f2f0611cede7b66fb92e23ccN.exe
Size

1.7MB
MD5

dab07ff32fc73f8c6baf669590650bc0
SHA1

41ef8db60d427ad89ea1399454ffc968562e6204
SHA256

ad3b0cdf3edd2264fc40e1470537c7a6255077c7f2f0611cede7b66fb92e23cc
SHA512

26718e7ae690c0c403c7dda62676fc89c4c714c3b1fb2fdc71f1b272500ebb27e6f468b1a27c9d8131cb25742594a1f682bf86e231f08f927f2da601f5317cb2
SSDEEP

24576:T9qIX5BrT6joVQjxCt7GzRiigfJI2hz+exIs7mm331/0+WeQbePXljEKmdocwCtq:0IjSmMf2JIy+vbmV/8bePVjEKm75

Score

10^/10

stealc brat discovery evasion 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

evasion

Query Registry

T1012

Virtualization/Sandbox Evasion

T1497

description	ioc	Process
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	ad3b0cdf3edd2264fc40e1470537c7a6255077c7f2f0611cede7b66fb92e23ccN.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	ad3b0cdf3edd2264fc40e1470537c7a6255077c7f2f0611cede7b66fb92e23ccN.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	ad3b0cdf3edd2264fc40e1470537c7a6255077c7f2f0611cede7b66fb92e23ccN.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	ad3b0cdf3edd2264fc40e1470537c7a6255077c7f2f0611cede7b66fb92e23ccN.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
1740	ad3b0cdf3edd2264fc40e1470537c7a6255077c7f2f0611cede7b66fb92e23ccN.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
2436	1740	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	ad3b0cdf3edd2264fc40e1470537c7a6255077c7f2f0611cede7b66fb92e23ccN.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	ad3b0cdf3edd2264fc40e1470537c7a6255077c7f2f0611cede7b66fb92e23ccN.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	ad3b0cdf3edd2264fc40e1470537c7a6255077c7f2f0611cede7b66fb92e23ccN.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
1740	ad3b0cdf3edd2264fc40e1470537c7a6255077c7f2f0611cede7b66fb92e23ccN.exe
1740	ad3b0cdf3edd2264fc40e1470537c7a6255077c7f2f0611cede7b66fb92e23ccN.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 1740 wrote to memory of 2436	1740	ad3b0cdf3edd2264fc40e1470537c7a6255077c7f2f0611cede7b66fb92e23ccN.exe	32
PID 1740 wrote to memory of 2436	1740	ad3b0cdf3edd2264fc40e1470537c7a6255077c7f2f0611cede7b66fb92e23ccN.exe	32
PID 1740 wrote to memory of 2436	1740	ad3b0cdf3edd2264fc40e1470537c7a6255077c7f2f0611cede7b66fb92e23ccN.exe	32
PID 1740 wrote to memory of 2436	1740	ad3b0cdf3edd2264fc40e1470537c7a6255077c7f2f0611cede7b66fb92e23ccN.exe	32

C:\Users\Admin\AppData\Local\Temp\ad3b0cdf3edd2264fc40e1470537c7a6255077c7f2f0611cede7b66fb92e23ccN.exe
"C:\Users\Admin\AppData\Local\Temp\ad3b0cdf3edd2264fc40e1470537c7a6255077c7f2f0611cede7b66fb92e23ccN.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:1740
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1740 -s 932
  2⤵
  - Program crash
  PID:2436

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/1740-0-0x00000000012B0000-0x0000000001939000-memory.dmp

Filesize
6.5MB

Download
memory/1740-1-0x0000000077340000-0x0000000077342000-memory.dmp

Filesize
8KB

Download
memory/1740-2-0x00000000012B1000-0x00000000012C8000-memory.dmp

Filesize
92KB

Download
memory/1740-3-0x00000000012B0000-0x0000000001939000-memory.dmp

Filesize
6.5MB

Download
memory/1740-4-0x00000000012B0000-0x0000000001939000-memory.dmp

Filesize
6.5MB

Download
memory/1740-5-0x00000000012B0000-0x0000000001939000-memory.dmp

Filesize
6.5MB

Download
memory/1740-6-0x00000000012B0000-0x0000000001939000-memory.dmp

Filesize
6.5MB

Download
memory/1740-7-0x00000000012B0000-0x0000000001939000-memory.dmp

Filesize
6.5MB

Download
memory/1740-8-0x00000000012B0000-0x0000000001939000-memory.dmp

Filesize
6.5MB

Download
memory/1740-9-0x00000000012B0000-0x0000000001939000-memory.dmp

Filesize
6.5MB

Download
memory/1740-10-0x00000000012B0000-0x0000000001939000-memory.dmp

Filesize
6.5MB

Download
memory/1740-11-0x00000000012B0000-0x0000000001939000-memory.dmp

Filesize
6.5MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads