stealc | b95f229193be047ca9c5978eeea5b139b976efba5455337c3db52ac5c1c3297a

General

Target

b95f229193be047ca9c5978eeea5b139b976efba5455337c3db52ac5c1c3297a.exe
Size

2.7MB
MD5

05be6c3097f76004441c59c36ab81691
SHA1

290a5a9b43672b47b87b6e8fef341cd3f11d4989
SHA256

b95f229193be047ca9c5978eeea5b139b976efba5455337c3db52ac5c1c3297a
SHA512

79f3dc92c0b2cf98564f183c04b8431a839704fe55e7d4daa140ba2ee5c979940ed08fe098102ea26ef37d5a81e39c1160a58ec1aa64764c9022405b4ed0129e
SSDEEP

49152:nw8TElLmMxxydqfBr7sQpsD63H17DzfMQPBbMndghX:wSElRxxydqfBr1k6l/NPBsgh

Score

10^/10

stealc stok discovery evasion stealer

Malware Config

Extracted

Family

stealc

Botnet

stok

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__	b95f229193be047ca9c5978eeea5b139b976efba5455337c3db52ac5c1c3297a.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	b95f229193be047ca9c5978eeea5b139b976efba5455337c3db52ac5c1c3297a.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	b95f229193be047ca9c5978eeea5b139b976efba5455337c3db52ac5c1c3297a.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-1-5-21-3290804112-2823094203-3137964600-1000\Software\Wine	b95f229193be047ca9c5978eeea5b139b976efba5455337c3db52ac5c1c3297a.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
2408	b95f229193be047ca9c5978eeea5b139b976efba5455337c3db52ac5c1c3297a.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
2668	2408	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	b95f229193be047ca9c5978eeea5b139b976efba5455337c3db52ac5c1c3297a.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	b95f229193be047ca9c5978eeea5b139b976efba5455337c3db52ac5c1c3297a.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	b95f229193be047ca9c5978eeea5b139b976efba5455337c3db52ac5c1c3297a.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2408	b95f229193be047ca9c5978eeea5b139b976efba5455337c3db52ac5c1c3297a.exe
2408	b95f229193be047ca9c5978eeea5b139b976efba5455337c3db52ac5c1c3297a.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2408 wrote to memory of 2668	2408	b95f229193be047ca9c5978eeea5b139b976efba5455337c3db52ac5c1c3297a.exe	32
PID 2408 wrote to memory of 2668	2408	b95f229193be047ca9c5978eeea5b139b976efba5455337c3db52ac5c1c3297a.exe	32
PID 2408 wrote to memory of 2668	2408	b95f229193be047ca9c5978eeea5b139b976efba5455337c3db52ac5c1c3297a.exe	32
PID 2408 wrote to memory of 2668	2408	b95f229193be047ca9c5978eeea5b139b976efba5455337c3db52ac5c1c3297a.exe	32

C:\Users\Admin\AppData\Local\Temp\b95f229193be047ca9c5978eeea5b139b976efba5455337c3db52ac5c1c3297a.exe
"C:\Users\Admin\AppData\Local\Temp\b95f229193be047ca9c5978eeea5b139b976efba5455337c3db52ac5c1c3297a.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:2408
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2408 -s 920
  2⤵
  - Program crash
  PID:2668

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/2408-0-0x0000000000D40000-0x0000000001235000-memory.dmp

Filesize
5.0MB

Download
memory/2408-1-0x0000000077DB0000-0x0000000077DB2000-memory.dmp

Filesize
8KB

Download
memory/2408-2-0x0000000000D41000-0x0000000000D58000-memory.dmp

Filesize
92KB

Download
memory/2408-3-0x0000000000D40000-0x0000000001235000-memory.dmp

Filesize
5.0MB

Download
memory/2408-4-0x0000000000D40000-0x0000000001235000-memory.dmp

Filesize
5.0MB

Download
memory/2408-5-0x0000000000D40000-0x0000000001235000-memory.dmp

Filesize
5.0MB

Download
memory/2408-6-0x0000000000D40000-0x0000000001235000-memory.dmp

Filesize
5.0MB

Download
memory/2408-7-0x0000000000D40000-0x0000000001235000-memory.dmp

Filesize
5.0MB

Download
memory/2408-8-0x0000000000D40000-0x0000000001235000-memory.dmp

Filesize
5.0MB

Download
memory/2408-9-0x0000000000D40000-0x0000000001235000-memory.dmp

Filesize
5.0MB

Download
memory/2408-10-0x0000000000D40000-0x0000000001235000-memory.dmp

Filesize
5.0MB

Download
memory/2408-11-0x0000000000D40000-0x0000000001235000-memory.dmp

Filesize
5.0MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads