stealc | d7c71985ced8018382c0542b534cde02440dd26c86a7d8ce3e3036f2c5a80315

General

Target

d7c71985ced8018382c0542b534cde02440dd26c86a7d8ce3e3036f2c5a80315.exe
Size

1.7MB
MD5

60646f17e9f6b049da72655d24fe89ce
SHA1

1e986ea72f157ae44a0df4ac68f7ecba41a87595
SHA256

d7c71985ced8018382c0542b534cde02440dd26c86a7d8ce3e3036f2c5a80315
SHA512

876ac4274502bee0765fd20d601239fc5e2f1f4ee4edab45e6d5c2779e2a3e69f960dcf29d7e13bca615286b0a63d8e0f11cc6cfbb5fb868bb560b0b5f408bed
SSDEEP

24576:VoVa8OG96WIoLZRkz8uDwpnXxgMTOOuKzm+ByXAEeoqOn1lbDR04UhoLs4gjD+Up:Vqjy8Gwv/UWm+sQEg88iIDR

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__	d7c71985ced8018382c0542b534cde02440dd26c86a7d8ce3e3036f2c5a80315.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	d7c71985ced8018382c0542b534cde02440dd26c86a7d8ce3e3036f2c5a80315.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	d7c71985ced8018382c0542b534cde02440dd26c86a7d8ce3e3036f2c5a80315.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-1-5-21-3290804112-2823094203-3137964600-1000\Software\Wine	d7c71985ced8018382c0542b534cde02440dd26c86a7d8ce3e3036f2c5a80315.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
2688	d7c71985ced8018382c0542b534cde02440dd26c86a7d8ce3e3036f2c5a80315.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
2892	2688	WerFault.exe	30

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	d7c71985ced8018382c0542b534cde02440dd26c86a7d8ce3e3036f2c5a80315.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	d7c71985ced8018382c0542b534cde02440dd26c86a7d8ce3e3036f2c5a80315.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	d7c71985ced8018382c0542b534cde02440dd26c86a7d8ce3e3036f2c5a80315.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2688	d7c71985ced8018382c0542b534cde02440dd26c86a7d8ce3e3036f2c5a80315.exe
2688	d7c71985ced8018382c0542b534cde02440dd26c86a7d8ce3e3036f2c5a80315.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2688 wrote to memory of 2892	2688	d7c71985ced8018382c0542b534cde02440dd26c86a7d8ce3e3036f2c5a80315.exe	32
PID 2688 wrote to memory of 2892	2688	d7c71985ced8018382c0542b534cde02440dd26c86a7d8ce3e3036f2c5a80315.exe	32
PID 2688 wrote to memory of 2892	2688	d7c71985ced8018382c0542b534cde02440dd26c86a7d8ce3e3036f2c5a80315.exe	32
PID 2688 wrote to memory of 2892	2688	d7c71985ced8018382c0542b534cde02440dd26c86a7d8ce3e3036f2c5a80315.exe	32

C:\Users\Admin\AppData\Local\Temp\d7c71985ced8018382c0542b534cde02440dd26c86a7d8ce3e3036f2c5a80315.exe
"C:\Users\Admin\AppData\Local\Temp\d7c71985ced8018382c0542b534cde02440dd26c86a7d8ce3e3036f2c5a80315.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:2688
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2688 -s 928
  2⤵
  - Program crash
  PID:2892

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/2688-0-0x0000000000F60000-0x00000000015EB000-memory.dmp

Filesize
6.5MB

Download
memory/2688-1-0x0000000077850000-0x0000000077852000-memory.dmp

Filesize
8KB

Download
memory/2688-2-0x0000000000F61000-0x0000000000F78000-memory.dmp

Filesize
92KB

Download
memory/2688-3-0x0000000000F60000-0x00000000015EB000-memory.dmp

Filesize
6.5MB

Download
memory/2688-4-0x0000000000F60000-0x00000000015EB000-memory.dmp

Filesize
6.5MB

Download
memory/2688-5-0x0000000000F60000-0x00000000015EB000-memory.dmp

Filesize
6.5MB

Download
memory/2688-6-0x0000000000F60000-0x00000000015EB000-memory.dmp

Filesize
6.5MB

Download
memory/2688-7-0x0000000000F60000-0x00000000015EB000-memory.dmp

Filesize
6.5MB

Download
memory/2688-8-0x0000000000F60000-0x00000000015EB000-memory.dmp

Filesize
6.5MB

Download
memory/2688-9-0x0000000000F60000-0x00000000015EB000-memory.dmp

Filesize
6.5MB

Download
memory/2688-10-0x0000000000F60000-0x00000000015EB000-memory.dmp

Filesize
6.5MB

Download
memory/2688-11-0x0000000000F60000-0x00000000015EB000-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