stealc | 4596bafc0efc36a8f3ec2574dba1e8ae82e5b6051a2b5cce1605057a20855072

General

Target

4596bafc0efc36a8f3ec2574dba1e8ae82e5b6051a2b5cce1605057a20855072.exe
Size

1.7MB
MD5

215acb5ad199adeadc4c630b59f09d17
SHA1

76609d0d3867fa6d84da0958b5c1a954e8643f49
SHA256

4596bafc0efc36a8f3ec2574dba1e8ae82e5b6051a2b5cce1605057a20855072
SHA512

358b95a6dc92baed9822c95f23fb13196f712ab4c92587a0b13feb35649ee09ecf63b01218cdb436542e0893a824c2b09d61cd1670b879d23fd08c2ce247a850
SSDEEP

49152:ix2ytIT3b5pKzATXNqChzHkgcooX7hXyM:i2T3NpeATXdJHkrpC

Score

10^/10

stealc mars discovery evasion stealer

Malware Config

Extracted

Family

stealc

Botnet

mars

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

Processes:

4596bafc0efc36a8f3ec2574dba1e8ae82e5b6051a2b5cce1605057a20855072.exe

description ioc process

Key opened \REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__ 4596bafc0efc36a8f3ec2574dba1e8ae82e5b6051a2b5cce1605057a20855072.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	4596bafc0efc36a8f3ec2574dba1e8ae82e5b6051a2b5cce1605057a20855072.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

Processes:

4596bafc0efc36a8f3ec2574dba1e8ae82e5b6051a2b5cce1605057a20855072.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	4596bafc0efc36a8f3ec2574dba1e8ae82e5b6051a2b5cce1605057a20855072.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	4596bafc0efc36a8f3ec2574dba1e8ae82e5b6051a2b5cce1605057a20855072.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

Processes:

4596bafc0efc36a8f3ec2574dba1e8ae82e5b6051a2b5cce1605057a20855072.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-3692679935-4019334568-335155002-1000\Software\Wine	4596bafc0efc36a8f3ec2574dba1e8ae82e5b6051a2b5cce1605057a20855072.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

Processes:

4596bafc0efc36a8f3ec2574dba1e8ae82e5b6051a2b5cce1605057a20855072.exe

pid process

2412 4596bafc0efc36a8f3ec2574dba1e8ae82e5b6051a2b5cce1605057a20855072.exe
Program crash 1 IoCs

Processes:

WerFault.exe

pid pid_target process target process

2284 2412 WerFault.exe 4596bafc0efc36a8f3ec2574dba1e8ae82e5b6051a2b5cce1605057a20855072.exe

pid	pid_target	process	target process
2284	2412	WerFault.exe	4596bafc0efc36a8f3ec2574dba1e8ae82e5b6051a2b5cce1605057a20855072.exe

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

Processes:

4596bafc0efc36a8f3ec2574dba1e8ae82e5b6051a2b5cce1605057a20855072.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	4596bafc0efc36a8f3ec2574dba1e8ae82e5b6051a2b5cce1605057a20855072.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

Processes:

4596bafc0efc36a8f3ec2574dba1e8ae82e5b6051a2b5cce1605057a20855072.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	4596bafc0efc36a8f3ec2574dba1e8ae82e5b6051a2b5cce1605057a20855072.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	4596bafc0efc36a8f3ec2574dba1e8ae82e5b6051a2b5cce1605057a20855072.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

4596bafc0efc36a8f3ec2574dba1e8ae82e5b6051a2b5cce1605057a20855072.exe

pid	process
2412	4596bafc0efc36a8f3ec2574dba1e8ae82e5b6051a2b5cce1605057a20855072.exe
2412	4596bafc0efc36a8f3ec2574dba1e8ae82e5b6051a2b5cce1605057a20855072.exe

Suspicious use of WriteProcessMemory 4 IoCs

Processes:

4596bafc0efc36a8f3ec2574dba1e8ae82e5b6051a2b5cce1605057a20855072.exe

description	pid	process	target process
PID 2412 wrote to memory of 2284	2412	4596bafc0efc36a8f3ec2574dba1e8ae82e5b6051a2b5cce1605057a20855072.exe	WerFault.exe
PID 2412 wrote to memory of 2284	2412	4596bafc0efc36a8f3ec2574dba1e8ae82e5b6051a2b5cce1605057a20855072.exe	WerFault.exe
PID 2412 wrote to memory of 2284	2412	4596bafc0efc36a8f3ec2574dba1e8ae82e5b6051a2b5cce1605057a20855072.exe	WerFault.exe
PID 2412 wrote to memory of 2284	2412	4596bafc0efc36a8f3ec2574dba1e8ae82e5b6051a2b5cce1605057a20855072.exe	WerFault.exe

C:\Users\Admin\AppData\Local\Temp\4596bafc0efc36a8f3ec2574dba1e8ae82e5b6051a2b5cce1605057a20855072.exe
"C:\Users\Admin\AppData\Local\Temp\4596bafc0efc36a8f3ec2574dba1e8ae82e5b6051a2b5cce1605057a20855072.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:2412
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2412 -s 432
  2⤵
  - Program crash
  PID:2284

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/2412-0-0x0000000000DE0000-0x0000000001462000-memory.dmp

Filesize
6.5MB

Download
memory/2412-1-0x0000000077BA0000-0x0000000077BA2000-memory.dmp

Filesize
8KB

Download
memory/2412-2-0x0000000000DE1000-0x0000000000DF8000-memory.dmp

Filesize
92KB

Download
memory/2412-3-0x0000000000DE0000-0x0000000001462000-memory.dmp

Filesize
6.5MB

Download
memory/2412-4-0x0000000000DE0000-0x0000000001462000-memory.dmp

Filesize
6.5MB

Download
memory/2412-5-0x0000000000DE0000-0x0000000001462000-memory.dmp

Filesize
6.5MB

Download
memory/2412-6-0x0000000000DE0000-0x0000000001462000-memory.dmp

Filesize
6.5MB

Download
memory/2412-7-0x0000000000DE0000-0x0000000001462000-memory.dmp

Filesize
6.5MB

Download
memory/2412-8-0x0000000000DE0000-0x0000000001462000-memory.dmp

Filesize
6.5MB

Download
memory/2412-9-0x0000000000DE0000-0x0000000001462000-memory.dmp

Filesize
6.5MB

Download
memory/2412-10-0x0000000000DE0000-0x0000000001462000-memory.dmp

Filesize
6.5MB

Download
memory/2412-12-0x0000000000DE0000-0x0000000001462000-memory.dmp

Filesize
6.5MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads