stealc | d626737a33a9d44f82f1e27a1b977ddb0cbc29019f7de000aac2dce1fe085440

General

Target

d626737a33a9d44f82f1e27a1b977ddb0cbc29019f7de000aac2dce1fe085440.exe
Size

2.8MB
MD5

20de5611a82d6bbff3cd044f5fb59ccc
SHA1

1c1f6cd50b6c5ba1c867dd0df8726c894d447da5
SHA256

d626737a33a9d44f82f1e27a1b977ddb0cbc29019f7de000aac2dce1fe085440
SHA512

3e30b780e84df976106072202a08cfc4ce2bcb19ddf883bf0b16cce8e75702fbbeb8836168ed5df8668ec72046baf382ce2c66aa89d2c7d8f993ae81b1b7dea0
SSDEEP

49152:iiXdeV888hu8N4FnLb+MEkIBKe92G9ZQLm9d3Jy0azN:iip0LKMEkIHHQLKdZTaB

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__	d626737a33a9d44f82f1e27a1b977ddb0cbc29019f7de000aac2dce1fe085440.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	d626737a33a9d44f82f1e27a1b977ddb0cbc29019f7de000aac2dce1fe085440.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	d626737a33a9d44f82f1e27a1b977ddb0cbc29019f7de000aac2dce1fe085440.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	d626737a33a9d44f82f1e27a1b977ddb0cbc29019f7de000aac2dce1fe085440.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
2016	d626737a33a9d44f82f1e27a1b977ddb0cbc29019f7de000aac2dce1fe085440.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
2604	2016	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	d626737a33a9d44f82f1e27a1b977ddb0cbc29019f7de000aac2dce1fe085440.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	d626737a33a9d44f82f1e27a1b977ddb0cbc29019f7de000aac2dce1fe085440.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	d626737a33a9d44f82f1e27a1b977ddb0cbc29019f7de000aac2dce1fe085440.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2016	d626737a33a9d44f82f1e27a1b977ddb0cbc29019f7de000aac2dce1fe085440.exe
2016	d626737a33a9d44f82f1e27a1b977ddb0cbc29019f7de000aac2dce1fe085440.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2016 wrote to memory of 2604	2016	d626737a33a9d44f82f1e27a1b977ddb0cbc29019f7de000aac2dce1fe085440.exe	32
PID 2016 wrote to memory of 2604	2016	d626737a33a9d44f82f1e27a1b977ddb0cbc29019f7de000aac2dce1fe085440.exe	32
PID 2016 wrote to memory of 2604	2016	d626737a33a9d44f82f1e27a1b977ddb0cbc29019f7de000aac2dce1fe085440.exe	32
PID 2016 wrote to memory of 2604	2016	d626737a33a9d44f82f1e27a1b977ddb0cbc29019f7de000aac2dce1fe085440.exe	32

C:\Users\Admin\AppData\Local\Temp\d626737a33a9d44f82f1e27a1b977ddb0cbc29019f7de000aac2dce1fe085440.exe
"C:\Users\Admin\AppData\Local\Temp\d626737a33a9d44f82f1e27a1b977ddb0cbc29019f7de000aac2dce1fe085440.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:2016
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2016 -s 924
  2⤵
  - Program crash
  PID:2604

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/2016-0-0x00000000009E0000-0x0000000000EDA000-memory.dmp

Filesize
5.0MB

Download
memory/2016-1-0x00000000779B0000-0x00000000779B2000-memory.dmp

Filesize
8KB

Download
memory/2016-2-0x00000000009E1000-0x00000000009F8000-memory.dmp

Filesize
92KB

Download
memory/2016-3-0x00000000009E0000-0x0000000000EDA000-memory.dmp

Filesize
5.0MB

Download
memory/2016-4-0x00000000009E0000-0x0000000000EDA000-memory.dmp

Filesize
5.0MB

Download
memory/2016-5-0x00000000009E0000-0x0000000000EDA000-memory.dmp

Filesize
5.0MB

Download
memory/2016-6-0x00000000009E0000-0x0000000000EDA000-memory.dmp

Filesize
5.0MB

Download
memory/2016-7-0x00000000009E0000-0x0000000000EDA000-memory.dmp

Filesize
5.0MB

Download
memory/2016-8-0x00000000009E0000-0x0000000000EDA000-memory.dmp

Filesize
5.0MB

Download
memory/2016-9-0x00000000009E0000-0x0000000000EDA000-memory.dmp

Filesize
5.0MB

Download
memory/2016-10-0x00000000009E0000-0x0000000000EDA000-memory.dmp

Filesize
5.0MB

Download
memory/2016-11-0x00000000009E0000-0x0000000000EDA000-memory.dmp

Filesize
5.0MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads