stealc | 1db3fc5386659d850ae5a13b8d7b8b69ed0ddb99255d676df342be8f0f95585c

General

Target

1db3fc5386659d850ae5a13b8d7b8b69ed0ddb99255d676df342be8f0f95585c.exe
Size

1.7MB
MD5

bd1ed1a084ac914af5d9e8f2af09dcd3
SHA1

4826b1766c567f59b998cb2af722d8d947549bcd
SHA256

1db3fc5386659d850ae5a13b8d7b8b69ed0ddb99255d676df342be8f0f95585c
SHA512

d6d3c17f8a757e5f4b416963d9f6526590c051e7dac529f72370a97b8d8014f76ac037fb54a428b0085e12e26ad1deb4f6f72419042ba60beb692d01fd7e28c1
SSDEEP

49152:ullYitxhmA//clb9zbPIXWlqZYUso+TlsgS/iGkW5xc3:ull9PN//gBQXW+YUsmAy

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__	1db3fc5386659d850ae5a13b8d7b8b69ed0ddb99255d676df342be8f0f95585c.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	1db3fc5386659d850ae5a13b8d7b8b69ed0ddb99255d676df342be8f0f95585c.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	1db3fc5386659d850ae5a13b8d7b8b69ed0ddb99255d676df342be8f0f95585c.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-1-5-21-3350944739-639801879-157714471-1000\Software\Wine	1db3fc5386659d850ae5a13b8d7b8b69ed0ddb99255d676df342be8f0f95585c.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
716	1db3fc5386659d850ae5a13b8d7b8b69ed0ddb99255d676df342be8f0f95585c.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
3792	716	WerFault.exe	82

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	1db3fc5386659d850ae5a13b8d7b8b69ed0ddb99255d676df342be8f0f95585c.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	1db3fc5386659d850ae5a13b8d7b8b69ed0ddb99255d676df342be8f0f95585c.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	1db3fc5386659d850ae5a13b8d7b8b69ed0ddb99255d676df342be8f0f95585c.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
716	1db3fc5386659d850ae5a13b8d7b8b69ed0ddb99255d676df342be8f0f95585c.exe
716	1db3fc5386659d850ae5a13b8d7b8b69ed0ddb99255d676df342be8f0f95585c.exe
716	1db3fc5386659d850ae5a13b8d7b8b69ed0ddb99255d676df342be8f0f95585c.exe
716	1db3fc5386659d850ae5a13b8d7b8b69ed0ddb99255d676df342be8f0f95585c.exe

C:\Users\Admin\AppData\Local\Temp\1db3fc5386659d850ae5a13b8d7b8b69ed0ddb99255d676df342be8f0f95585c.exe
"C:\Users\Admin\AppData\Local\Temp\1db3fc5386659d850ae5a13b8d7b8b69ed0ddb99255d676df342be8f0f95585c.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
PID:716
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 716 -s 1476
  2⤵
  - Program crash
  PID:3792

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 184 -p 716 -ip 716
1⤵
PID:4284

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/716-0-0x00000000000B0000-0x000000000072B000-memory.dmp

Filesize
6.5MB

Download
memory/716-1-0x00000000779C4000-0x00000000779C6000-memory.dmp

Filesize
8KB

Download
memory/716-2-0x00000000000B1000-0x00000000000C8000-memory.dmp

Filesize
92KB

Download
memory/716-3-0x00000000000B0000-0x000000000072B000-memory.dmp

Filesize
6.5MB

Download
memory/716-4-0x00000000000B0000-0x000000000072B000-memory.dmp

Filesize
6.5MB

Download
memory/716-5-0x00000000000B0000-0x000000000072B000-memory.dmp

Filesize
6.5MB

Download
memory/716-6-0x00000000000B0000-0x000000000072B000-memory.dmp

Filesize
6.5MB

Download
memory/716-7-0x00000000000B0000-0x000000000072B000-memory.dmp

Filesize
6.5MB

Download
memory/716-8-0x00000000000B0000-0x000000000072B000-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