stealc | bd38a29392c4855ef21bf29ef385f1d6ee899366b1264c8c39b169370b3ab94a

General

Target

bd38a29392c4855ef21bf29ef385f1d6ee899366b1264c8c39b169370b3ab94a.exe
Size

1.7MB
MD5

5083671493e1ba0ffc4c93caa2a6fced
SHA1

00f847346e937d5c3bc1e2a92ec6d49ae415d684
SHA256

bd38a29392c4855ef21bf29ef385f1d6ee899366b1264c8c39b169370b3ab94a
SHA512

852bd9fa84cf220aac6619e5b0078be073b1cecefa939f1e3c6fae7cff4b767e013540b40d05e587b4708f983fd69e023b127d41587a9784e039dfe8ebb463e1
SSDEEP

49152:W+967s4qTW5QZgDU//99RyYLmA52hl6Wgf0NNZS:WS67TqTW5QZ2Un99wYLmAa+f

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__	bd38a29392c4855ef21bf29ef385f1d6ee899366b1264c8c39b169370b3ab94a.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	bd38a29392c4855ef21bf29ef385f1d6ee899366b1264c8c39b169370b3ab94a.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	bd38a29392c4855ef21bf29ef385f1d6ee899366b1264c8c39b169370b3ab94a.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-1-5-21-3063565911-2056067323-3330884624-1000\Software\Wine	bd38a29392c4855ef21bf29ef385f1d6ee899366b1264c8c39b169370b3ab94a.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
1948	bd38a29392c4855ef21bf29ef385f1d6ee899366b1264c8c39b169370b3ab94a.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
2028	1948	WerFault.exe	29

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	bd38a29392c4855ef21bf29ef385f1d6ee899366b1264c8c39b169370b3ab94a.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	bd38a29392c4855ef21bf29ef385f1d6ee899366b1264c8c39b169370b3ab94a.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	bd38a29392c4855ef21bf29ef385f1d6ee899366b1264c8c39b169370b3ab94a.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
1948	bd38a29392c4855ef21bf29ef385f1d6ee899366b1264c8c39b169370b3ab94a.exe
1948	bd38a29392c4855ef21bf29ef385f1d6ee899366b1264c8c39b169370b3ab94a.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 1948 wrote to memory of 2028	1948	bd38a29392c4855ef21bf29ef385f1d6ee899366b1264c8c39b169370b3ab94a.exe	31
PID 1948 wrote to memory of 2028	1948	bd38a29392c4855ef21bf29ef385f1d6ee899366b1264c8c39b169370b3ab94a.exe	31
PID 1948 wrote to memory of 2028	1948	bd38a29392c4855ef21bf29ef385f1d6ee899366b1264c8c39b169370b3ab94a.exe	31
PID 1948 wrote to memory of 2028	1948	bd38a29392c4855ef21bf29ef385f1d6ee899366b1264c8c39b169370b3ab94a.exe	31

C:\Users\Admin\AppData\Local\Temp\bd38a29392c4855ef21bf29ef385f1d6ee899366b1264c8c39b169370b3ab94a.exe
"C:\Users\Admin\AppData\Local\Temp\bd38a29392c4855ef21bf29ef385f1d6ee899366b1264c8c39b169370b3ab94a.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:1948
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1948 -s 916
  2⤵
  - Program crash
  PID:2028

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/1948-0-0x0000000000E20000-0x00000000014BA000-memory.dmp

Filesize
6.6MB

Download
memory/1948-1-0x0000000077470000-0x0000000077472000-memory.dmp

Filesize
8KB

Download
memory/1948-2-0x0000000000E21000-0x0000000000E38000-memory.dmp

Filesize
92KB

Download
memory/1948-3-0x0000000000E20000-0x00000000014BA000-memory.dmp

Filesize
6.6MB

Download
memory/1948-4-0x0000000000E20000-0x00000000014BA000-memory.dmp

Filesize
6.6MB

Download
memory/1948-5-0x0000000000E20000-0x00000000014BA000-memory.dmp

Filesize
6.6MB

Download
memory/1948-6-0x0000000000E20000-0x00000000014BA000-memory.dmp

Filesize
6.6MB

Download
memory/1948-7-0x0000000000E20000-0x00000000014BA000-memory.dmp

Filesize
6.6MB

Download
memory/1948-8-0x0000000000E20000-0x00000000014BA000-memory.dmp

Filesize
6.6MB

Download
memory/1948-9-0x0000000000E20000-0x00000000014BA000-memory.dmp

Filesize
6.6MB

Download
memory/1948-10-0x0000000000E20000-0x00000000014BA000-memory.dmp

Filesize
6.6MB

Download
memory/1948-11-0x0000000000E20000-0x00000000014BA000-memory.dmp

Filesize
6.6MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads