stealc | 917ea94350f22c3c0dbb935090db6d6a180d22d1f6e46f447c85fe196b14a3e1

General

Target

917ea94350f22c3c0dbb935090db6d6a180d22d1f6e46f447c85fe196b14a3e1.exe
Size

2.1MB
MD5

502a8628ac9f42b8258d3ee440d58db8
SHA1

ef7ff1d96bd374807b88a7a0f96cf49c49fe3309
SHA256

917ea94350f22c3c0dbb935090db6d6a180d22d1f6e46f447c85fe196b14a3e1
SHA512

673d52851e2cecc4220c3b7ddb4dc3f200ab8ceddb01df80f94f181c0dd53d95caa0006f1ea2e7bfc3f1e323278e75dab043849078ab5935d1126f73966ad96b
SSDEEP

49152:N6uDuaS9refi8JtTF+TxMoxc1TU+j+dAzGwlrh:N6uKb9H8tIuoITsdZ

Score

10^/10

stealc vidar discovery spyware stealer

Malware Config

Extracted

Family

stealc

rc4.plain

Signatures

Detect Vidar Stealer 8 IoCs

stealer

Processes:

resource	yara_rule
behavioral2/memory/248-1-0x0000000004050000-0x0000000004199000-memory.dmp	family_vidar_v7
behavioral2/memory/3504-8-0x0000000000400000-0x0000000000646000-memory.dmp	family_vidar_v7
behavioral2/memory/3504-10-0x0000000000400000-0x0000000000646000-memory.dmp	family_vidar_v7
behavioral2/memory/3504-4-0x0000000000400000-0x0000000000646000-memory.dmp	family_vidar_v7
behavioral2/memory/3504-16-0x0000000000400000-0x0000000000646000-memory.dmp	family_vidar_v7
behavioral2/memory/3504-17-0x0000000000400000-0x0000000000646000-memory.dmp	family_vidar_v7
behavioral2/memory/3504-34-0x0000000000400000-0x0000000000646000-memory.dmp	family_vidar_v7
behavioral2/memory/3504-35-0x0000000000400000-0x0000000000646000-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
Downloads MZ/PE file
Executes dropped EXE 1 IoCs

Processes:

kat590D.tmp

pid process

3504 kat590D.tmp
Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
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

pid	process
3504	kat590D.tmp

Suspicious use of SetThreadContext 1 IoCs

Processes:

917ea94350f22c3c0dbb935090db6d6a180d22d1f6e46f447c85fe196b14a3e1.exe

description	pid	process	target process
PID 248 set thread context of 3504	248	917ea94350f22c3c0dbb935090db6d6a180d22d1f6e46f447c85fe196b14a3e1.exe	kat590D.tmp

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:

kat590D.tmp

description ioc process

Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString kat590D.tmp
Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

kat590D.tmp

pid process

3504 kat590D.tmp
3504 kat590D.tmp

description	ioc	process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	kat590D.tmp

pid	process
3504	kat590D.tmp
3504	kat590D.tmp

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

917ea94350f22c3c0dbb935090db6d6a180d22d1f6e46f447c85fe196b14a3e1.exe

description	pid	process	target process
PID 248 wrote to memory of 3504	248	917ea94350f22c3c0dbb935090db6d6a180d22d1f6e46f447c85fe196b14a3e1.exe	kat590D.tmp
PID 248 wrote to memory of 3504	248	917ea94350f22c3c0dbb935090db6d6a180d22d1f6e46f447c85fe196b14a3e1.exe	kat590D.tmp
PID 248 wrote to memory of 3504	248	917ea94350f22c3c0dbb935090db6d6a180d22d1f6e46f447c85fe196b14a3e1.exe	kat590D.tmp
PID 248 wrote to memory of 3504	248	917ea94350f22c3c0dbb935090db6d6a180d22d1f6e46f447c85fe196b14a3e1.exe	kat590D.tmp
PID 248 wrote to memory of 3504	248	917ea94350f22c3c0dbb935090db6d6a180d22d1f6e46f447c85fe196b14a3e1.exe	kat590D.tmp
PID 248 wrote to memory of 3504	248	917ea94350f22c3c0dbb935090db6d6a180d22d1f6e46f447c85fe196b14a3e1.exe	kat590D.tmp
PID 248 wrote to memory of 3504	248	917ea94350f22c3c0dbb935090db6d6a180d22d1f6e46f447c85fe196b14a3e1.exe	kat590D.tmp
PID 248 wrote to memory of 3504	248	917ea94350f22c3c0dbb935090db6d6a180d22d1f6e46f447c85fe196b14a3e1.exe	kat590D.tmp

C:\Users\Admin\AppData\Local\Temp\917ea94350f22c3c0dbb935090db6d6a180d22d1f6e46f447c85fe196b14a3e1.exe
"C:\Users\Admin\AppData\Local\Temp\917ea94350f22c3c0dbb935090db6d6a180d22d1f6e46f447c85fe196b14a3e1.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:248

C:\Users\Admin\AppData\Local\Temp\kat590D.tmp
C:\Users\Admin\AppData\Local\Temp\kat590D.tmp
2⤵
- Executes dropped EXE
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
PID:3504

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Unsecured Credentials

1

T1552

Credentials In Files

1

T1552.001

Discovery

Query Registry

2

T1012

System Information Discovery

1

T1082

Lateral Movement

Collection

Data from Local System

1

T1005

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Temp\kat590D.tmp

Filesize
861KB

MD5
66064dbdb70a5eb15ebf3bf65aba254b

SHA1
0284fd320f99f62aca800fb1251eff4c31ec4ed7

SHA256
6a94dbda2dd1edcff2331061d65e1baf09d4861cc7ba590c5ec754f3ac96a795

SHA512
b05c6c09ae7372c381fba591c3cb13a69a2451b9d38da1a95aac89413d7438083475d06796acb5440cd6ec65b030c9fa6cbdaa0d2fe91a926bae6499c360f17f

Download Submit
memory/248-0-0x0000000002480000-0x0000000002481000-memory.dmp

Filesize
4KB

Download
memory/248-1-0x0000000004050000-0x0000000004199000-memory.dmp

Filesize
1.3MB

Download
memory/248-9-0x0000000000400000-0x000000000061C000-memory.dmp

Filesize
2.1MB

Download
memory/3504-8-0x0000000000400000-0x0000000000646000-memory.dmp

Filesize
2.3MB

Download
memory/3504-10-0x0000000000400000-0x0000000000646000-memory.dmp

Filesize
2.3MB

Download
memory/3504-4-0x0000000000400000-0x0000000000646000-memory.dmp

Filesize
2.3MB

Download
memory/3504-16-0x0000000000400000-0x0000000000646000-memory.dmp

Filesize
2.3MB

Download
memory/3504-17-0x0000000000400000-0x0000000000646000-memory.dmp

Filesize
2.3MB

Download
memory/3504-19-0x00000000193D0000-0x000000001962F000-memory.dmp

Filesize
2.4MB

Download
memory/3504-34-0x0000000000400000-0x0000000000646000-memory.dmp

Filesize
2.3MB

Download
memory/3504-35-0x0000000000400000-0x0000000000646000-memory.dmp

Filesize
2.3MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads