stealc | 95fcbefdb108b4d18062c436acdd24302da8ad64e48f1883972c892c9ac8b817

General

Target

95fcbefdb108b4d18062c436acdd24302da8ad64e48f1883972c892c9ac8b817.exe
Size

1.7MB
MD5

f41dfd98d7f8304859ecb4feb2af914b
SHA1

2e8e93a59956d0d357071328daef15b2f6685741
SHA256

95fcbefdb108b4d18062c436acdd24302da8ad64e48f1883972c892c9ac8b817
SHA512

f4ac099b42e5bcab7388f307b6407ee6718b749d7c62b979bd76826944f326f1d4f54f9cd8668800728791775ee75241e90b2ce461c2a4eff4494b1ad0c9c466
SSDEEP

49152:8uwuNGMBcriL8fV/kzpPl5nfKhUo5Vq1I/:gMB6c8fV/kpP3fjo34

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__	95fcbefdb108b4d18062c436acdd24302da8ad64e48f1883972c892c9ac8b817.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	95fcbefdb108b4d18062c436acdd24302da8ad64e48f1883972c892c9ac8b817.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	95fcbefdb108b4d18062c436acdd24302da8ad64e48f1883972c892c9ac8b817.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-1-5-21-493223053-2004649691-1575712786-1000\Software\Wine	95fcbefdb108b4d18062c436acdd24302da8ad64e48f1883972c892c9ac8b817.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
4576	95fcbefdb108b4d18062c436acdd24302da8ad64e48f1883972c892c9ac8b817.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
1084	4576	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	95fcbefdb108b4d18062c436acdd24302da8ad64e48f1883972c892c9ac8b817.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	95fcbefdb108b4d18062c436acdd24302da8ad64e48f1883972c892c9ac8b817.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	95fcbefdb108b4d18062c436acdd24302da8ad64e48f1883972c892c9ac8b817.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
4576	95fcbefdb108b4d18062c436acdd24302da8ad64e48f1883972c892c9ac8b817.exe
4576	95fcbefdb108b4d18062c436acdd24302da8ad64e48f1883972c892c9ac8b817.exe
4576	95fcbefdb108b4d18062c436acdd24302da8ad64e48f1883972c892c9ac8b817.exe
4576	95fcbefdb108b4d18062c436acdd24302da8ad64e48f1883972c892c9ac8b817.exe

C:\Users\Admin\AppData\Local\Temp\95fcbefdb108b4d18062c436acdd24302da8ad64e48f1883972c892c9ac8b817.exe
"C:\Users\Admin\AppData\Local\Temp\95fcbefdb108b4d18062c436acdd24302da8ad64e48f1883972c892c9ac8b817.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:4576
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4576 -s 1484
  2⤵
  - Program crash
  PID:1084

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 404 -p 4576 -ip 4576
1⤵
PID:4996

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/4576-0-0x00000000009A0000-0x0000000001026000-memory.dmp

Filesize
6.5MB

Download
memory/4576-1-0x0000000077904000-0x0000000077906000-memory.dmp

Filesize
8KB

Download
memory/4576-2-0x00000000009A1000-0x00000000009B8000-memory.dmp

Filesize
92KB

Download
memory/4576-3-0x00000000009A0000-0x0000000001026000-memory.dmp

Filesize
6.5MB

Download
memory/4576-4-0x00000000009A0000-0x0000000001026000-memory.dmp

Filesize
6.5MB

Download
memory/4576-6-0x00000000009A0000-0x0000000001026000-memory.dmp

Filesize
6.5MB

Download
memory/4576-5-0x00000000009A0000-0x0000000001026000-memory.dmp

Filesize
6.5MB

Download
memory/4576-7-0x00000000009A0000-0x0000000001026000-memory.dmp

Filesize
6.5MB

Download
memory/4576-8-0x00000000009A0000-0x0000000001026000-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