stealc | 2c2a52bfb552c1b2fb3af46a69f386ba25d78ac456b1574cec6ddb44e165bdc9

General

Target

2c2a52bfb552c1b2fb3af46a69f386ba25d78ac456b1574cec6ddb44e165bdc9.exe
Size

2.7MB
MD5

51bd77a19ae4f75d3fa1b78659faec55
SHA1

d150d5067ee4a840d7e709074d8fc6299f4e472c
SHA256

2c2a52bfb552c1b2fb3af46a69f386ba25d78ac456b1574cec6ddb44e165bdc9
SHA512

b5f9e5203ea9a03af592f69a9d5f7d6bab573991243c459cd3dc30c6fefea887a0439d824b65531c3d9020cd40e75118a85b50b63ce76608b5fb99e35ad905e4
SSDEEP

49152:2pFkcc8e8f9u/1yEU9ueV/w6fkc/q5kQfKRqoT9:2zTVf9u/1ylAowawueZC

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__	2c2a52bfb552c1b2fb3af46a69f386ba25d78ac456b1574cec6ddb44e165bdc9.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	2c2a52bfb552c1b2fb3af46a69f386ba25d78ac456b1574cec6ddb44e165bdc9.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	2c2a52bfb552c1b2fb3af46a69f386ba25d78ac456b1574cec6ddb44e165bdc9.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-1-5-21-312935884-697965778-3955649944-1000\Software\Wine	2c2a52bfb552c1b2fb3af46a69f386ba25d78ac456b1574cec6ddb44e165bdc9.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
2560	2c2a52bfb552c1b2fb3af46a69f386ba25d78ac456b1574cec6ddb44e165bdc9.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
2708	2560	WerFault.exe	29

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	2c2a52bfb552c1b2fb3af46a69f386ba25d78ac456b1574cec6ddb44e165bdc9.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	2c2a52bfb552c1b2fb3af46a69f386ba25d78ac456b1574cec6ddb44e165bdc9.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	2c2a52bfb552c1b2fb3af46a69f386ba25d78ac456b1574cec6ddb44e165bdc9.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2560	2c2a52bfb552c1b2fb3af46a69f386ba25d78ac456b1574cec6ddb44e165bdc9.exe
2560	2c2a52bfb552c1b2fb3af46a69f386ba25d78ac456b1574cec6ddb44e165bdc9.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2560 wrote to memory of 2708	2560	2c2a52bfb552c1b2fb3af46a69f386ba25d78ac456b1574cec6ddb44e165bdc9.exe	32
PID 2560 wrote to memory of 2708	2560	2c2a52bfb552c1b2fb3af46a69f386ba25d78ac456b1574cec6ddb44e165bdc9.exe	32
PID 2560 wrote to memory of 2708	2560	2c2a52bfb552c1b2fb3af46a69f386ba25d78ac456b1574cec6ddb44e165bdc9.exe	32
PID 2560 wrote to memory of 2708	2560	2c2a52bfb552c1b2fb3af46a69f386ba25d78ac456b1574cec6ddb44e165bdc9.exe	32

C:\Users\Admin\AppData\Local\Temp\2c2a52bfb552c1b2fb3af46a69f386ba25d78ac456b1574cec6ddb44e165bdc9.exe
"C:\Users\Admin\AppData\Local\Temp\2c2a52bfb552c1b2fb3af46a69f386ba25d78ac456b1574cec6ddb44e165bdc9.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:2560
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2560 -s 932
  2⤵
  - Program crash
  PID:2708

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/2560-0-0x0000000001260000-0x0000000001754000-memory.dmp

Filesize
5.0MB

Download
memory/2560-1-0x0000000077010000-0x0000000077012000-memory.dmp

Filesize
8KB

Download
memory/2560-2-0x0000000001261000-0x0000000001278000-memory.dmp

Filesize
92KB

Download
memory/2560-3-0x0000000001260000-0x0000000001754000-memory.dmp

Filesize
5.0MB

Download
memory/2560-4-0x0000000001260000-0x0000000001754000-memory.dmp

Filesize
5.0MB

Download
memory/2560-5-0x0000000001260000-0x0000000001754000-memory.dmp

Filesize
5.0MB

Download
memory/2560-6-0x0000000001260000-0x0000000001754000-memory.dmp

Filesize
5.0MB

Download
memory/2560-7-0x0000000001260000-0x0000000001754000-memory.dmp

Filesize
5.0MB

Download
memory/2560-8-0x0000000001260000-0x0000000001754000-memory.dmp

Filesize
5.0MB

Download
memory/2560-9-0x0000000001260000-0x0000000001754000-memory.dmp

Filesize
5.0MB

Download
memory/2560-10-0x0000000001260000-0x0000000001754000-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