stealc | 36d443642e6569019baecbc6c288be4a4619b1eecb30f4f394e99b227c49b390

General

Target

36d443642e6569019baecbc6c288be4a4619b1eecb30f4f394e99b227c49b390.exe
Size

1.7MB
MD5

53e4443bfc0afb8507d218fb8eed9136
SHA1

47dc854edb46c307ab847657ea00b3a4fc33f9f7
SHA256

36d443642e6569019baecbc6c288be4a4619b1eecb30f4f394e99b227c49b390
SHA512

0e187c2fbaeed0fd6c7a254f9cdbf247aa46cd9c11300c8a47fc18b9a03f444f21f015380fa763778ac0d42ae8f2f959cc088fa7ba03a53e9813ae15a6b40458
SSDEEP

24576:rEylWhP7hy8n83Q/a95e9pm/If7LJ55FxTt5EIL25bafRGrrK979GyH8VOy8FA:4hNy8yQ/4eZ/JTp5J25SRp9DHMG

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__	36d443642e6569019baecbc6c288be4a4619b1eecb30f4f394e99b227c49b390.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	36d443642e6569019baecbc6c288be4a4619b1eecb30f4f394e99b227c49b390.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	36d443642e6569019baecbc6c288be4a4619b1eecb30f4f394e99b227c49b390.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	36d443642e6569019baecbc6c288be4a4619b1eecb30f4f394e99b227c49b390.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
2812	36d443642e6569019baecbc6c288be4a4619b1eecb30f4f394e99b227c49b390.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
2660	2812	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	36d443642e6569019baecbc6c288be4a4619b1eecb30f4f394e99b227c49b390.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	36d443642e6569019baecbc6c288be4a4619b1eecb30f4f394e99b227c49b390.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	36d443642e6569019baecbc6c288be4a4619b1eecb30f4f394e99b227c49b390.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2812	36d443642e6569019baecbc6c288be4a4619b1eecb30f4f394e99b227c49b390.exe
2812	36d443642e6569019baecbc6c288be4a4619b1eecb30f4f394e99b227c49b390.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2812 wrote to memory of 2660	2812	36d443642e6569019baecbc6c288be4a4619b1eecb30f4f394e99b227c49b390.exe	31
PID 2812 wrote to memory of 2660	2812	36d443642e6569019baecbc6c288be4a4619b1eecb30f4f394e99b227c49b390.exe	31
PID 2812 wrote to memory of 2660	2812	36d443642e6569019baecbc6c288be4a4619b1eecb30f4f394e99b227c49b390.exe	31
PID 2812 wrote to memory of 2660	2812	36d443642e6569019baecbc6c288be4a4619b1eecb30f4f394e99b227c49b390.exe	31

C:\Users\Admin\AppData\Local\Temp\36d443642e6569019baecbc6c288be4a4619b1eecb30f4f394e99b227c49b390.exe
"C:\Users\Admin\AppData\Local\Temp\36d443642e6569019baecbc6c288be4a4619b1eecb30f4f394e99b227c49b390.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:2812
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2812 -s 928
  2⤵
  - Program crash
  PID:2660

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/2812-0-0x0000000000C40000-0x00000000012D7000-memory.dmp

Filesize
6.6MB

Download
memory/2812-1-0x00000000771E0000-0x00000000771E2000-memory.dmp

Filesize
8KB

Download
memory/2812-2-0x0000000000C41000-0x0000000000C58000-memory.dmp

Filesize
92KB

Download
memory/2812-3-0x0000000000C40000-0x00000000012D7000-memory.dmp

Filesize
6.6MB

Download
memory/2812-4-0x0000000000C40000-0x00000000012D7000-memory.dmp

Filesize
6.6MB

Download
memory/2812-5-0x0000000000C40000-0x00000000012D7000-memory.dmp

Filesize
6.6MB

Download
memory/2812-6-0x0000000000C40000-0x00000000012D7000-memory.dmp

Filesize
6.6MB

Download
memory/2812-7-0x0000000000C40000-0x00000000012D7000-memory.dmp

Filesize
6.6MB

Download
memory/2812-8-0x0000000000C40000-0x00000000012D7000-memory.dmp

Filesize
6.6MB

Download
memory/2812-9-0x0000000000C40000-0x00000000012D7000-memory.dmp

Filesize
6.6MB

Download
memory/2812-10-0x0000000000C40000-0x00000000012D7000-memory.dmp

Filesize
6.6MB

Download
memory/2812-12-0x0000000000C40000-0x00000000012D7000-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