stealc | 5cdd3f667134ad3cda79c81353c37860885bf84c7419da1e9aeb14993850a1a2

General

Target

5cdd3f667134ad3cda79c81353c37860885bf84c7419da1e9aeb14993850a1a2.exe
Size

1.7MB
MD5

c3b99e00883a10bfd3b0d0c0776f65f7
SHA1

a51dcd3f1869aab5cb247267ffe258789a58a6a3
SHA256

5cdd3f667134ad3cda79c81353c37860885bf84c7419da1e9aeb14993850a1a2
SHA512

5e3a6ab133d4e876b27b3532945804b039511005248cdea9b1b31ac2d83aba654198ee1cfe05613fc63892ba0719f98fb36bffd0d3576ff8f374ddd6b87670ed
SSDEEP

24576:0JZuYcUmAT5YtZ8qaKPRHD/Z8lbK7TGBNnMj5Yo8QB+ItX0lQbHRX5SZWuwz:0JZuckXjobvznMV+Ql0mbHOZWh

Score

10^/10

stealc brat discovery evasion 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

evasion

Query Registry

T1012

Virtualization/Sandbox Evasion

T1497

description	ioc	Process
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	5cdd3f667134ad3cda79c81353c37860885bf84c7419da1e9aeb14993850a1a2.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	5cdd3f667134ad3cda79c81353c37860885bf84c7419da1e9aeb14993850a1a2.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	5cdd3f667134ad3cda79c81353c37860885bf84c7419da1e9aeb14993850a1a2.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

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-1488793075-819845221-1497111674-1000\Software\Wine	5cdd3f667134ad3cda79c81353c37860885bf84c7419da1e9aeb14993850a1a2.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
2612	5cdd3f667134ad3cda79c81353c37860885bf84c7419da1e9aeb14993850a1a2.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
2588	2612	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	5cdd3f667134ad3cda79c81353c37860885bf84c7419da1e9aeb14993850a1a2.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	5cdd3f667134ad3cda79c81353c37860885bf84c7419da1e9aeb14993850a1a2.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	5cdd3f667134ad3cda79c81353c37860885bf84c7419da1e9aeb14993850a1a2.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2612	5cdd3f667134ad3cda79c81353c37860885bf84c7419da1e9aeb14993850a1a2.exe
2612	5cdd3f667134ad3cda79c81353c37860885bf84c7419da1e9aeb14993850a1a2.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2612 wrote to memory of 2588	2612	5cdd3f667134ad3cda79c81353c37860885bf84c7419da1e9aeb14993850a1a2.exe	32
PID 2612 wrote to memory of 2588	2612	5cdd3f667134ad3cda79c81353c37860885bf84c7419da1e9aeb14993850a1a2.exe	32
PID 2612 wrote to memory of 2588	2612	5cdd3f667134ad3cda79c81353c37860885bf84c7419da1e9aeb14993850a1a2.exe	32
PID 2612 wrote to memory of 2588	2612	5cdd3f667134ad3cda79c81353c37860885bf84c7419da1e9aeb14993850a1a2.exe	32

C:\Users\Admin\AppData\Local\Temp\5cdd3f667134ad3cda79c81353c37860885bf84c7419da1e9aeb14993850a1a2.exe
"C:\Users\Admin\AppData\Local\Temp\5cdd3f667134ad3cda79c81353c37860885bf84c7419da1e9aeb14993850a1a2.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:2612
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2612 -s 924
  2⤵
  - Program crash
  PID:2588

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

Replay Monitor

Loading Replay Monitor...

Downloads

memory/2612-0-0x0000000001350000-0x00000000019EB000-memory.dmp

Filesize
6.6MB

Download
memory/2612-1-0x0000000077590000-0x0000000077592000-memory.dmp

Filesize
8KB

Download
memory/2612-2-0x0000000001351000-0x0000000001368000-memory.dmp

Filesize
92KB

Download
memory/2612-3-0x0000000001350000-0x00000000019EB000-memory.dmp

Filesize
6.6MB

Download
memory/2612-4-0x0000000001350000-0x00000000019EB000-memory.dmp

Filesize
6.6MB

Download
memory/2612-5-0x0000000001350000-0x00000000019EB000-memory.dmp

Filesize
6.6MB

Download
memory/2612-6-0x0000000001350000-0x00000000019EB000-memory.dmp

Filesize
6.6MB

Download
memory/2612-7-0x0000000001350000-0x00000000019EB000-memory.dmp

Filesize
6.6MB

Download
memory/2612-8-0x0000000001350000-0x00000000019EB000-memory.dmp

Filesize
6.6MB

Download
memory/2612-9-0x0000000001350000-0x00000000019EB000-memory.dmp

Filesize
6.6MB

Download
memory/2612-10-0x0000000001350000-0x00000000019EB000-memory.dmp

Filesize
6.6MB

Download
memory/2612-11-0x0000000001350000-0x00000000019EB000-memory.dmp

Filesize
6.6MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads