stealc | 92c09cf7ac4f932dfb65cf96fb953308becf140004e24d025075a304dc2904db

General

Target

92c09cf7ac4f932dfb65cf96fb953308becf140004e24d025075a304dc2904db.exe
Size

1.7MB
MD5

9cbd1c3ae0692b24814843def70b7877
SHA1

f55a1d6e3cc716f005eed66d690c904f15d07782
SHA256

92c09cf7ac4f932dfb65cf96fb953308becf140004e24d025075a304dc2904db
SHA512

41ade25f3c5ed42b852227cc3ee6653fda514240161f72a36756169bc9ec0507fcbe4db5d581c8eda7047b76220e9300723ab1e258cbda3c9c5738fd28ba1207
SSDEEP

49152:m31SuscyJBYqsb4ncIf1VVHU/BikUWzPp4cR092:U1SuOvYqA4H1HHjyx4cR09

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__	92c09cf7ac4f932dfb65cf96fb953308becf140004e24d025075a304dc2904db.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	92c09cf7ac4f932dfb65cf96fb953308becf140004e24d025075a304dc2904db.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	92c09cf7ac4f932dfb65cf96fb953308becf140004e24d025075a304dc2904db.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-1-5-21-312935884-697965778-3955649944-1000\Software\Wine	92c09cf7ac4f932dfb65cf96fb953308becf140004e24d025075a304dc2904db.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
2076	92c09cf7ac4f932dfb65cf96fb953308becf140004e24d025075a304dc2904db.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
2612	2076	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	92c09cf7ac4f932dfb65cf96fb953308becf140004e24d025075a304dc2904db.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	92c09cf7ac4f932dfb65cf96fb953308becf140004e24d025075a304dc2904db.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	92c09cf7ac4f932dfb65cf96fb953308becf140004e24d025075a304dc2904db.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2076	92c09cf7ac4f932dfb65cf96fb953308becf140004e24d025075a304dc2904db.exe
2076	92c09cf7ac4f932dfb65cf96fb953308becf140004e24d025075a304dc2904db.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2076 wrote to memory of 2612	2076	92c09cf7ac4f932dfb65cf96fb953308becf140004e24d025075a304dc2904db.exe	32
PID 2076 wrote to memory of 2612	2076	92c09cf7ac4f932dfb65cf96fb953308becf140004e24d025075a304dc2904db.exe	32
PID 2076 wrote to memory of 2612	2076	92c09cf7ac4f932dfb65cf96fb953308becf140004e24d025075a304dc2904db.exe	32
PID 2076 wrote to memory of 2612	2076	92c09cf7ac4f932dfb65cf96fb953308becf140004e24d025075a304dc2904db.exe	32

C:\Users\Admin\AppData\Local\Temp\92c09cf7ac4f932dfb65cf96fb953308becf140004e24d025075a304dc2904db.exe
"C:\Users\Admin\AppData\Local\Temp\92c09cf7ac4f932dfb65cf96fb953308becf140004e24d025075a304dc2904db.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:2076
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2076 -s 932
  2⤵
  - Program crash
  PID:2612

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/2076-0-0x0000000001210000-0x00000000018A9000-memory.dmp

Filesize
6.6MB

Download
memory/2076-1-0x0000000077230000-0x0000000077232000-memory.dmp

Filesize
8KB

Download
memory/2076-2-0x0000000001211000-0x0000000001228000-memory.dmp

Filesize
92KB

Download
memory/2076-3-0x0000000001210000-0x00000000018A9000-memory.dmp

Filesize
6.6MB

Download
memory/2076-4-0x0000000001210000-0x00000000018A9000-memory.dmp

Filesize
6.6MB

Download
memory/2076-5-0x0000000001210000-0x00000000018A9000-memory.dmp

Filesize
6.6MB

Download
memory/2076-6-0x0000000001210000-0x00000000018A9000-memory.dmp

Filesize
6.6MB

Download
memory/2076-7-0x0000000001210000-0x00000000018A9000-memory.dmp

Filesize
6.6MB

Download
memory/2076-8-0x0000000001210000-0x00000000018A9000-memory.dmp

Filesize
6.6MB

Download
memory/2076-9-0x0000000001210000-0x00000000018A9000-memory.dmp

Filesize
6.6MB

Download
memory/2076-10-0x0000000001210000-0x00000000018A9000-memory.dmp

Filesize
6.6MB

Download
memory/2076-12-0x0000000001210000-0x00000000018A9000-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