stealc | 53d2f46e542782a650bca90703983ef0b71a49034730cf81af40cc01c596da4d

General

Target

53d2f46e542782a650bca90703983ef0b71a49034730cf81af40cc01c596da4d.exe
Size

1.7MB
MD5

7c01300fd39cefb3a23d9dea48a66573
SHA1

0bd8b0d286577cb61863f6b8401ae2b3c374338a
SHA256

53d2f46e542782a650bca90703983ef0b71a49034730cf81af40cc01c596da4d
SHA512

55959728004930a83529f8c948890dec9d44a2cdd953159980d720af590812c93fe5defc026712f941a9d798abfbe9160bc7f81fc88d4f12169b53db33d1aceb
SSDEEP

24576:czxrvMYxzZjxeWOUO2lmizixwbWSUKwdRAYmZoauXA6FqjKCrwLCZsYBI9X2J:czBjJn6wmi88UKgx6oJRqbZXBINa

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__	53d2f46e542782a650bca90703983ef0b71a49034730cf81af40cc01c596da4d.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	53d2f46e542782a650bca90703983ef0b71a49034730cf81af40cc01c596da4d.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	53d2f46e542782a650bca90703983ef0b71a49034730cf81af40cc01c596da4d.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-1-5-21-312935884-697965778-3955649944-1000\Software\Wine	53d2f46e542782a650bca90703983ef0b71a49034730cf81af40cc01c596da4d.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
2108	53d2f46e542782a650bca90703983ef0b71a49034730cf81af40cc01c596da4d.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
2620	2108	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	53d2f46e542782a650bca90703983ef0b71a49034730cf81af40cc01c596da4d.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 value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	53d2f46e542782a650bca90703983ef0b71a49034730cf81af40cc01c596da4d.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	53d2f46e542782a650bca90703983ef0b71a49034730cf81af40cc01c596da4d.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2108	53d2f46e542782a650bca90703983ef0b71a49034730cf81af40cc01c596da4d.exe
2108	53d2f46e542782a650bca90703983ef0b71a49034730cf81af40cc01c596da4d.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2108 wrote to memory of 2620	2108	53d2f46e542782a650bca90703983ef0b71a49034730cf81af40cc01c596da4d.exe	32
PID 2108 wrote to memory of 2620	2108	53d2f46e542782a650bca90703983ef0b71a49034730cf81af40cc01c596da4d.exe	32
PID 2108 wrote to memory of 2620	2108	53d2f46e542782a650bca90703983ef0b71a49034730cf81af40cc01c596da4d.exe	32
PID 2108 wrote to memory of 2620	2108	53d2f46e542782a650bca90703983ef0b71a49034730cf81af40cc01c596da4d.exe	32

C:\Users\Admin\AppData\Local\Temp\53d2f46e542782a650bca90703983ef0b71a49034730cf81af40cc01c596da4d.exe
"C:\Users\Admin\AppData\Local\Temp\53d2f46e542782a650bca90703983ef0b71a49034730cf81af40cc01c596da4d.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:2108
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2108 -s 924
  2⤵
  - Program crash
  PID:2620

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/2108-0-0x0000000001380000-0x0000000001A21000-memory.dmp

Filesize
6.6MB

Download
memory/2108-1-0x0000000077780000-0x0000000077782000-memory.dmp

Filesize
8KB

Download
memory/2108-2-0x0000000001381000-0x0000000001398000-memory.dmp

Filesize
92KB

Download
memory/2108-3-0x0000000001380000-0x0000000001A21000-memory.dmp

Filesize
6.6MB

Download
memory/2108-4-0x0000000001380000-0x0000000001A21000-memory.dmp

Filesize
6.6MB

Download
memory/2108-5-0x0000000001380000-0x0000000001A21000-memory.dmp

Filesize
6.6MB

Download
memory/2108-6-0x0000000001380000-0x0000000001A21000-memory.dmp

Filesize
6.6MB

Download
memory/2108-7-0x0000000001380000-0x0000000001A21000-memory.dmp

Filesize
6.6MB

Download
memory/2108-8-0x0000000001380000-0x0000000001A21000-memory.dmp

Filesize
6.6MB

Download
memory/2108-9-0x0000000001380000-0x0000000001A21000-memory.dmp

Filesize
6.6MB

Download
memory/2108-10-0x0000000001380000-0x0000000001A21000-memory.dmp

Filesize
6.6MB

Download
memory/2108-12-0x0000000001380000-0x0000000001A21000-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