stealc | 507d6beb28401d2fbe5f72313c25bde0e47d268bb88362866c63af42b8d2e863

General

Target

507d6beb28401d2fbe5f72313c25bde0e47d268bb88362866c63af42b8d2e863.exe
Size

1.7MB
MD5

be29ae42a9079e7e1f78ca2cc117ec36
SHA1

cf3453b463de1e2904eb6468edad9a30d222243b
SHA256

507d6beb28401d2fbe5f72313c25bde0e47d268bb88362866c63af42b8d2e863
SHA512

55c0ecf0eab265757ebf9147572e0b43dec76005da27cec81b0d58abd3f98f2d42b9821f928313f22683fc4b36eac3848495cc477f4faf5656597ceb1567cc7c
SSDEEP

24576:aHY3/O/L3/4tvPfWsM8Ra3SSohrlV7tp9MVNZAHVGZUGGi35phJxRLl0pE8tacRY:qCkL3qvPBMN3qplDp6Vn/ZMOzuigqIa

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__	507d6beb28401d2fbe5f72313c25bde0e47d268bb88362866c63af42b8d2e863.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	507d6beb28401d2fbe5f72313c25bde0e47d268bb88362866c63af42b8d2e863.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	507d6beb28401d2fbe5f72313c25bde0e47d268bb88362866c63af42b8d2e863.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-1-5-21-1488793075-819845221-1497111674-1000\Software\Wine	507d6beb28401d2fbe5f72313c25bde0e47d268bb88362866c63af42b8d2e863.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
2872	507d6beb28401d2fbe5f72313c25bde0e47d268bb88362866c63af42b8d2e863.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
2596	2872	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	507d6beb28401d2fbe5f72313c25bde0e47d268bb88362866c63af42b8d2e863.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	507d6beb28401d2fbe5f72313c25bde0e47d268bb88362866c63af42b8d2e863.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	507d6beb28401d2fbe5f72313c25bde0e47d268bb88362866c63af42b8d2e863.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2872	507d6beb28401d2fbe5f72313c25bde0e47d268bb88362866c63af42b8d2e863.exe
2872	507d6beb28401d2fbe5f72313c25bde0e47d268bb88362866c63af42b8d2e863.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2872 wrote to memory of 2596	2872	507d6beb28401d2fbe5f72313c25bde0e47d268bb88362866c63af42b8d2e863.exe	31
PID 2872 wrote to memory of 2596	2872	507d6beb28401d2fbe5f72313c25bde0e47d268bb88362866c63af42b8d2e863.exe	31
PID 2872 wrote to memory of 2596	2872	507d6beb28401d2fbe5f72313c25bde0e47d268bb88362866c63af42b8d2e863.exe	31
PID 2872 wrote to memory of 2596	2872	507d6beb28401d2fbe5f72313c25bde0e47d268bb88362866c63af42b8d2e863.exe	31

C:\Users\Admin\AppData\Local\Temp\507d6beb28401d2fbe5f72313c25bde0e47d268bb88362866c63af42b8d2e863.exe
"C:\Users\Admin\AppData\Local\Temp\507d6beb28401d2fbe5f72313c25bde0e47d268bb88362866c63af42b8d2e863.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:2872
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2872 -s 928
  2⤵
  - Program crash
  PID:2596

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/2872-0-0x0000000000B60000-0x00000000011F3000-memory.dmp

Filesize
6.6MB

Download
memory/2872-1-0x0000000077030000-0x0000000077032000-memory.dmp

Filesize
8KB

Download
memory/2872-2-0x0000000000B61000-0x0000000000B78000-memory.dmp

Filesize
92KB

Download
memory/2872-3-0x0000000000B60000-0x00000000011F3000-memory.dmp

Filesize
6.6MB

Download
memory/2872-4-0x0000000000B60000-0x00000000011F3000-memory.dmp

Filesize
6.6MB

Download
memory/2872-5-0x0000000000B60000-0x00000000011F3000-memory.dmp

Filesize
6.6MB

Download
memory/2872-6-0x0000000000B60000-0x00000000011F3000-memory.dmp

Filesize
6.6MB

Download
memory/2872-7-0x0000000000B60000-0x00000000011F3000-memory.dmp

Filesize
6.6MB

Download
memory/2872-8-0x0000000000B60000-0x00000000011F3000-memory.dmp

Filesize
6.6MB

Download
memory/2872-9-0x0000000000B60000-0x00000000011F3000-memory.dmp

Filesize
6.6MB

Download
memory/2872-10-0x0000000000B60000-0x00000000011F3000-memory.dmp

Filesize
6.6MB

Download
memory/2872-11-0x0000000000B60000-0x00000000011F3000-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