stealc | 5dfc25b9d650dd57b07b8500776143fc0aaded0604a07e13f577eca5dfe4061c

General

Target

5dfc25b9d650dd57b07b8500776143fc0aaded0604a07e13f577eca5dfe4061c.exe
Size

1.7MB
MD5

a0a30519c1be3451bf08795ba4f9da8b
SHA1

75b5c416aee73cadeb24b9f436a477d48ccb9773
SHA256

5dfc25b9d650dd57b07b8500776143fc0aaded0604a07e13f577eca5dfe4061c
SHA512

c5d5b265ddf7e2f3e90ae5220fc133d7736dc91c62883dae7b731386f4dff49f93d9229c8a1e8a64afbe9923daf00cbe6e4c561f12efff9cab2c15641cd61cca
SSDEEP

49152:iecbDevegx6H2VpvPooZyq1yBVMtxuPu9p4x2:jcbq2z2soZy6u6bgx

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__	5dfc25b9d650dd57b07b8500776143fc0aaded0604a07e13f577eca5dfe4061c.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	5dfc25b9d650dd57b07b8500776143fc0aaded0604a07e13f577eca5dfe4061c.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	5dfc25b9d650dd57b07b8500776143fc0aaded0604a07e13f577eca5dfe4061c.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-1-5-21-2872745919-2748461613-2989606286-1000\Software\Wine	5dfc25b9d650dd57b07b8500776143fc0aaded0604a07e13f577eca5dfe4061c.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
2380	5dfc25b9d650dd57b07b8500776143fc0aaded0604a07e13f577eca5dfe4061c.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
3028	2380	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	5dfc25b9d650dd57b07b8500776143fc0aaded0604a07e13f577eca5dfe4061c.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	5dfc25b9d650dd57b07b8500776143fc0aaded0604a07e13f577eca5dfe4061c.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	5dfc25b9d650dd57b07b8500776143fc0aaded0604a07e13f577eca5dfe4061c.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2380	5dfc25b9d650dd57b07b8500776143fc0aaded0604a07e13f577eca5dfe4061c.exe
2380	5dfc25b9d650dd57b07b8500776143fc0aaded0604a07e13f577eca5dfe4061c.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2380 wrote to memory of 3028	2380	5dfc25b9d650dd57b07b8500776143fc0aaded0604a07e13f577eca5dfe4061c.exe	32
PID 2380 wrote to memory of 3028	2380	5dfc25b9d650dd57b07b8500776143fc0aaded0604a07e13f577eca5dfe4061c.exe	32
PID 2380 wrote to memory of 3028	2380	5dfc25b9d650dd57b07b8500776143fc0aaded0604a07e13f577eca5dfe4061c.exe	32
PID 2380 wrote to memory of 3028	2380	5dfc25b9d650dd57b07b8500776143fc0aaded0604a07e13f577eca5dfe4061c.exe	32

C:\Users\Admin\AppData\Local\Temp\5dfc25b9d650dd57b07b8500776143fc0aaded0604a07e13f577eca5dfe4061c.exe
"C:\Users\Admin\AppData\Local\Temp\5dfc25b9d650dd57b07b8500776143fc0aaded0604a07e13f577eca5dfe4061c.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:2380
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2380 -s 928
  2⤵
  - Program crash
  PID:3028

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/2380-0-0x00000000002C0000-0x000000000095D000-memory.dmp

Filesize
6.6MB

Download
memory/2380-2-0x00000000002C1000-0x00000000002D8000-memory.dmp

Filesize
92KB

Download
memory/2380-3-0x00000000002C0000-0x000000000095D000-memory.dmp

Filesize
6.6MB

Download
memory/2380-1-0x00000000774A0000-0x00000000774A2000-memory.dmp

Filesize
8KB

Download
memory/2380-4-0x00000000002C0000-0x000000000095D000-memory.dmp

Filesize
6.6MB

Download
memory/2380-5-0x00000000002C0000-0x000000000095D000-memory.dmp

Filesize
6.6MB

Download
memory/2380-6-0x00000000002C0000-0x000000000095D000-memory.dmp

Filesize
6.6MB

Download
memory/2380-7-0x00000000002C0000-0x000000000095D000-memory.dmp

Filesize
6.6MB

Download
memory/2380-8-0x00000000002C0000-0x000000000095D000-memory.dmp

Filesize
6.6MB

Download
memory/2380-9-0x00000000002C0000-0x000000000095D000-memory.dmp

Filesize
6.6MB

Download
memory/2380-10-0x00000000002C0000-0x000000000095D000-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