stealc | 1459188d9f7c47c45413c98ba79eb662bcc19c7951b8e7d2e875820cd81e2ace

General

Target

1459188d9f7c47c45413c98ba79eb662bcc19c7951b8e7d2e875820cd81e2aceN.exe
Size

1.7MB
MD5

cba787c9827b6355780bb76cbc4f7bc0
SHA1

71a5fd700fbceb401aea78f5ec02341759da6e4f
SHA256

1459188d9f7c47c45413c98ba79eb662bcc19c7951b8e7d2e875820cd81e2ace
SHA512

5738e15989442b6e319c981daa2aa422732205dace1e2386386b9651d9d1a3ad589c41b520b1eb372af84d37dd5cdfc333239959d7613b94f0593874c29adfc3
SSDEEP

49152:3uyYYW9Y6wRIdzyMA15+m2y1STkxnyHfeM:KYW2RGzy3VSQxnmeM

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__	1459188d9f7c47c45413c98ba79eb662bcc19c7951b8e7d2e875820cd81e2aceN.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	1459188d9f7c47c45413c98ba79eb662bcc19c7951b8e7d2e875820cd81e2aceN.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	1459188d9f7c47c45413c98ba79eb662bcc19c7951b8e7d2e875820cd81e2aceN.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-1-5-21-3551809350-4263495960-1443967649-1000\Software\Wine	1459188d9f7c47c45413c98ba79eb662bcc19c7951b8e7d2e875820cd81e2aceN.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
3044	1459188d9f7c47c45413c98ba79eb662bcc19c7951b8e7d2e875820cd81e2aceN.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
2616	3044	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	1459188d9f7c47c45413c98ba79eb662bcc19c7951b8e7d2e875820cd81e2aceN.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	1459188d9f7c47c45413c98ba79eb662bcc19c7951b8e7d2e875820cd81e2aceN.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	1459188d9f7c47c45413c98ba79eb662bcc19c7951b8e7d2e875820cd81e2aceN.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
3044	1459188d9f7c47c45413c98ba79eb662bcc19c7951b8e7d2e875820cd81e2aceN.exe
3044	1459188d9f7c47c45413c98ba79eb662bcc19c7951b8e7d2e875820cd81e2aceN.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 3044 wrote to memory of 2616	3044	1459188d9f7c47c45413c98ba79eb662bcc19c7951b8e7d2e875820cd81e2aceN.exe	32
PID 3044 wrote to memory of 2616	3044	1459188d9f7c47c45413c98ba79eb662bcc19c7951b8e7d2e875820cd81e2aceN.exe	32
PID 3044 wrote to memory of 2616	3044	1459188d9f7c47c45413c98ba79eb662bcc19c7951b8e7d2e875820cd81e2aceN.exe	32
PID 3044 wrote to memory of 2616	3044	1459188d9f7c47c45413c98ba79eb662bcc19c7951b8e7d2e875820cd81e2aceN.exe	32

C:\Users\Admin\AppData\Local\Temp\1459188d9f7c47c45413c98ba79eb662bcc19c7951b8e7d2e875820cd81e2aceN.exe
"C:\Users\Admin\AppData\Local\Temp\1459188d9f7c47c45413c98ba79eb662bcc19c7951b8e7d2e875820cd81e2aceN.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:3044
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3044 -s 928
  2⤵
  - Program crash
  PID:2616

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/3044-0-0x00000000013B0000-0x0000000001A44000-memory.dmp

Filesize
6.6MB

Download
memory/3044-1-0x0000000077660000-0x0000000077662000-memory.dmp

Filesize
8KB

Download
memory/3044-2-0x00000000013B1000-0x00000000013C8000-memory.dmp

Filesize
92KB

Download
memory/3044-3-0x00000000013B0000-0x0000000001A44000-memory.dmp

Filesize
6.6MB

Download
memory/3044-4-0x00000000013B0000-0x0000000001A44000-memory.dmp

Filesize
6.6MB

Download
memory/3044-5-0x00000000013B0000-0x0000000001A44000-memory.dmp

Filesize
6.6MB

Download
memory/3044-6-0x00000000013B0000-0x0000000001A44000-memory.dmp

Filesize
6.6MB

Download
memory/3044-7-0x00000000013B0000-0x0000000001A44000-memory.dmp

Filesize
6.6MB

Download
memory/3044-8-0x00000000013B0000-0x0000000001A44000-memory.dmp

Filesize
6.6MB

Download
memory/3044-9-0x00000000013B0000-0x0000000001A44000-memory.dmp

Filesize
6.6MB

Download
memory/3044-10-0x00000000013B0000-0x0000000001A44000-memory.dmp

Filesize
6.6MB

Download
memory/3044-11-0x00000000013B0000-0x0000000001A44000-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