stealc | 5f5d2d0921c6917bd07ea44fbfef38efc470942736a13283ba4e15df051c0f38

General

Target

5f5d2d0921c6917bd07ea44fbfef38efc470942736a13283ba4e15df051c0f38.exe
Size

7.4MB
MD5

4c3f0027d2e0e9c8664bf102fc2840e4
SHA1

1af682cc65c9a3c4f1f06fc1a698cf18bfeb3e12
SHA256

5f5d2d0921c6917bd07ea44fbfef38efc470942736a13283ba4e15df051c0f38
SHA512

3baeaecaae645fe329eccabd4e9e05a589ee69edf3e60e16ed3987f2ecb5c874dc75858dfd71871ed4a116aac2f9b58822d0a2c35fcbf7a8e4e77357e63af238
SSDEEP

196608:w6Oakf78Ql8X6OAfiZ8AY/5iEvCidMtCVHb1QR:LOXDra6OP5OiEvCi+IaR

Score

10^/10

stealc vidar discovery spyware stealer

Malware Config

Extracted

Family

stealc

rc4.plain

Signatures

Detect Vidar Stealer 1 IoCs

stealer

Processes:

resource	yara_rule
behavioral2/memory/2504-8-0x0000000000F30000-0x0000000001CF5000-memory.dmp	family_vidar_v7

Stealc
Stealc is an infostealer written in C++.
stealer stealc
Vidar
Vidar is an infostealer based on Arkei stealer.
stealer vidar

Detects Windows executables referencing non-Windows User-Agents 1 IoCs

Processes:

resource	yara_rule
behavioral2/memory/2504-8-0x0000000000F30000-0x0000000001CF5000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_NoneWindowsUA

Detects binaries and memory artifacts referencing sandbox DLLs typically observed in sandbox evasion 1 IoCs

Processes:

resource	yara_rule
behavioral2/memory/2504-8-0x0000000000F30000-0x0000000001CF5000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_SandboxHookingDLL

Detects executables containing potential Windows Defender anti-emulation checks 1 IoCs

Processes:

resource	yara_rule
behavioral2/memory/2504-8-0x0000000000F30000-0x0000000001CF5000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_WindDefender_AntiEmaulation

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

Processes:

5f5d2d0921c6917bd07ea44fbfef38efc470942736a13283ba4e15df051c0f38.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-2539840389-1261165778-1087677076-1000\Control Panel\International\Geo\Nation	5f5d2d0921c6917bd07ea44fbfef38efc470942736a13283ba4e15df051c0f38.exe

Reads data files stored by FTP clients 2 TTPs
Tries to access configuration files associated with programs like FileZilla.
spyware stealer

Data from Local System
T1005

Credentials In Files
T1552.001
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
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Checks processor information in registry 2 TTPs 1 IoCs

Processor information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

Processes:

5f5d2d0921c6917bd07ea44fbfef38efc470942736a13283ba4e15df051c0f38.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	5f5d2d0921c6917bd07ea44fbfef38efc470942736a13283ba4e15df051c0f38.exe

Delays execution with timeout.exe 1 IoCs
evasion

Processes:

timeout.exe

pid process

2052 timeout.exe

pid	process
2052	timeout.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

Processes:

5f5d2d0921c6917bd07ea44fbfef38efc470942736a13283ba4e15df051c0f38.exe

pid	process
2504	5f5d2d0921c6917bd07ea44fbfef38efc470942736a13283ba4e15df051c0f38.exe
2504	5f5d2d0921c6917bd07ea44fbfef38efc470942736a13283ba4e15df051c0f38.exe
2504	5f5d2d0921c6917bd07ea44fbfef38efc470942736a13283ba4e15df051c0f38.exe
2504	5f5d2d0921c6917bd07ea44fbfef38efc470942736a13283ba4e15df051c0f38.exe

Suspicious use of WriteProcessMemory 6 IoCs

Processes:

5f5d2d0921c6917bd07ea44fbfef38efc470942736a13283ba4e15df051c0f38.execmd.exe

description	pid	process	target process
PID 2504 wrote to memory of 3100	2504	5f5d2d0921c6917bd07ea44fbfef38efc470942736a13283ba4e15df051c0f38.exe	cmd.exe
PID 2504 wrote to memory of 3100	2504	5f5d2d0921c6917bd07ea44fbfef38efc470942736a13283ba4e15df051c0f38.exe	cmd.exe
PID 2504 wrote to memory of 3100	2504	5f5d2d0921c6917bd07ea44fbfef38efc470942736a13283ba4e15df051c0f38.exe	cmd.exe
PID 3100 wrote to memory of 2052	3100	cmd.exe	timeout.exe
PID 3100 wrote to memory of 2052	3100	cmd.exe	timeout.exe
PID 3100 wrote to memory of 2052	3100	cmd.exe	timeout.exe

C:\Users\Admin\AppData\Local\Temp\5f5d2d0921c6917bd07ea44fbfef38efc470942736a13283ba4e15df051c0f38.exe
"C:\Users\Admin\AppData\Local\Temp\5f5d2d0921c6917bd07ea44fbfef38efc470942736a13283ba4e15df051c0f38.exe"
1⤵
- Checks computer location settings
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:2504

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /c timeout /t 10 & del /f /q "C:\Users\Admin\AppData\Local\Temp\5f5d2d0921c6917bd07ea44fbfef38efc470942736a13283ba4e15df051c0f38.exe" & rd /s /q "C:\ProgramData\CBGCBKFBGIII" & exit
2⤵
- Suspicious use of WriteProcessMemory
PID:3100

C:\Windows\SysWOW64\timeout.exe
timeout /t 10
3⤵
- Delays execution with timeout.exe
PID:2052

Network

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Unsecured Credentials

1

T1552

Credentials In Files

1

T1552.001

Discovery

Query Registry

3

T1012

System Information Discovery

3

T1082

Lateral Movement

Collection

Data from Local System

1

T1005

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

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Downloads

memory/2504-1-0x0000000000B70000-0x0000000000B71000-memory.dmp

Filesize
4KB

Download
memory/2504-0-0x0000000000B60000-0x0000000000B61000-memory.dmp

Filesize
4KB

Download
memory/2504-4-0x0000000001172000-0x000000000159A000-memory.dmp

Filesize
4.2MB

Download
memory/2504-6-0x0000000000EF0000-0x0000000000EF1000-memory.dmp

Filesize
4KB

Download
memory/2504-5-0x0000000000EE0000-0x0000000000EE1000-memory.dmp

Filesize
4KB

Download
memory/2504-8-0x0000000000F30000-0x0000000001CF5000-memory.dmp

Filesize
13.8MB

Download
memory/2504-3-0x0000000000ED0000-0x0000000000ED1000-memory.dmp

Filesize
4KB

Download
memory/2504-2-0x0000000000B80000-0x0000000000B81000-memory.dmp

Filesize
4KB

Download
memory/2504-10-0x0000000001172000-0x000000000159A000-memory.dmp

Filesize
4.2MB

Download
memory/2504-11-0x0000000001172000-0x000000000159A000-memory.dmp

Filesize
4.2MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v13

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Downloads