stealc | 38300f513b13136da06d17928459a4a6daa64e5cc7a6ca3db1cc73e48222808d

General

Target

38300f513b13136da06d17928459a4a6daa64e5cc7a6ca3db1cc73e48222808d.exe
Size

4.9MB
MD5

918e4d1abf21f088a94746a2f17768ec
SHA1

a1684d7b99be71ae852a9cab4978d98506c9166b
SHA256

38300f513b13136da06d17928459a4a6daa64e5cc7a6ca3db1cc73e48222808d
SHA512

be471f8fc4aaff9349a764ce3766d979c5c706b5528d0ce8aa82f3970ede0bede292253203e720caa578cc019aea60ec5ce1acf147091f0f00aac25e6e3d682f
SSDEEP

49152:hKUB1fmtN7YQhLqSPM7xvNfhCmKRr+fBGbIfvyM:hNPmtN7YQhLqSPsxvNfh9KRafBGbsy

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__	38300f513b13136da06d17928459a4a6daa64e5cc7a6ca3db1cc73e48222808d.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\VideoBiosVersion	38300f513b13136da06d17928459a4a6daa64e5cc7a6ca3db1cc73e48222808d.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	38300f513b13136da06d17928459a4a6daa64e5cc7a6ca3db1cc73e48222808d.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-1-5-21-3442511616-637977696-3186306149-1000\Software\Wine	38300f513b13136da06d17928459a4a6daa64e5cc7a6ca3db1cc73e48222808d.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
4240	38300f513b13136da06d17928459a4a6daa64e5cc7a6ca3db1cc73e48222808d.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
3316	4240	WerFault.exe	81

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	38300f513b13136da06d17928459a4a6daa64e5cc7a6ca3db1cc73e48222808d.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 value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	38300f513b13136da06d17928459a4a6daa64e5cc7a6ca3db1cc73e48222808d.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	38300f513b13136da06d17928459a4a6daa64e5cc7a6ca3db1cc73e48222808d.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
4240	38300f513b13136da06d17928459a4a6daa64e5cc7a6ca3db1cc73e48222808d.exe
4240	38300f513b13136da06d17928459a4a6daa64e5cc7a6ca3db1cc73e48222808d.exe
4240	38300f513b13136da06d17928459a4a6daa64e5cc7a6ca3db1cc73e48222808d.exe
4240	38300f513b13136da06d17928459a4a6daa64e5cc7a6ca3db1cc73e48222808d.exe

C:\Users\Admin\AppData\Local\Temp\38300f513b13136da06d17928459a4a6daa64e5cc7a6ca3db1cc73e48222808d.exe
"C:\Users\Admin\AppData\Local\Temp\38300f513b13136da06d17928459a4a6daa64e5cc7a6ca3db1cc73e48222808d.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:4240
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4240 -s 1492
  2⤵
  - Program crash
  PID:3316

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 420 -p 4240 -ip 4240
1⤵
PID:1320

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/4240-0-0x0000000000BC0000-0x00000000010A7000-memory.dmp

Filesize
4.9MB

Download
memory/4240-1-0x0000000077594000-0x0000000077596000-memory.dmp

Filesize
8KB

Download
memory/4240-2-0x0000000000BC1000-0x0000000000E0A000-memory.dmp

Filesize
2.3MB

Download
memory/4240-3-0x0000000000BC0000-0x00000000010A7000-memory.dmp

Filesize
4.9MB

Download
memory/4240-4-0x0000000000BC0000-0x00000000010A7000-memory.dmp

Filesize
4.9MB

Download
memory/4240-5-0x0000000000BC1000-0x0000000000E0A000-memory.dmp

Filesize
2.3MB

Download
memory/4240-6-0x0000000000BC0000-0x00000000010A7000-memory.dmp

Filesize
4.9MB

Download
memory/4240-7-0x0000000000BC0000-0x00000000010A7000-memory.dmp

Filesize
4.9MB

Download
memory/4240-8-0x0000000000BC0000-0x00000000010A7000-memory.dmp

Filesize
4.9MB

Download
memory/4240-9-0x0000000000BC0000-0x00000000010A7000-memory.dmp

Filesize
4.9MB

Download
memory/4240-10-0x0000000000BC1000-0x0000000000E0A000-memory.dmp

Filesize
2.3MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads