stealc | cdb96fe401203d67b6617aebdf69adab0e19a33af333974fa585018e93729ae7

General

Target

cdb96fe401203d67b6617aebdf69adab0e19a33af333974fa585018e93729ae7.exe
Size

2.0MB
MD5

106d55846976bec96fbeb384c6b3c175
SHA1

e3c919801473ecc9b1917c7b8213c5ac255ada09
SHA256

cdb96fe401203d67b6617aebdf69adab0e19a33af333974fa585018e93729ae7
SHA512

0cc97304873285b8a8849c458bff193f26588279f4ae7082272c0a42d6eb68ddc0e2e7855e4f9912309e21c937a3aa8aaf18da63ed91088a61f59baf10583b85
SSDEEP

49152:s4K3x1vUCJtTF+TxMoxc1TU+j+dAzGwlrh:s4Ex18CtIuoITsdZ

Score

10^/10

stealc vidar discovery spyware stealer

Malware Config

Extracted

Family

stealc

rc4.plain

Extracted

Family

vidar

C2

https://steamcommunity.com/profiles/76561199689717899

https://t.me/copterwin

Attributes

user_agent
Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:128.0) Gecko/20100101 Firefox/128.0

Signatures

Detect Vidar Stealer 8 IoCs

stealer

Processes:

resource	yara_rule
behavioral2/memory/4384-2-0x0000000004080000-0x00000000041C9000-memory.dmp	family_vidar_v7
behavioral2/memory/3140-4-0x0000000000400000-0x0000000000646000-memory.dmp	family_vidar_v7
behavioral2/memory/3140-8-0x0000000000400000-0x0000000000646000-memory.dmp	family_vidar_v7
behavioral2/memory/3140-9-0x0000000000400000-0x0000000000646000-memory.dmp	family_vidar_v7
behavioral2/memory/3140-19-0x0000000000400000-0x0000000000646000-memory.dmp	family_vidar_v7
behavioral2/memory/3140-20-0x0000000000400000-0x0000000000646000-memory.dmp	family_vidar_v7
behavioral2/memory/3140-37-0x0000000000400000-0x0000000000646000-memory.dmp	family_vidar_v7
behavioral2/memory/3140-38-0x0000000000400000-0x0000000000646000-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
Executes dropped EXE 1 IoCs

Processes:

kat78D9.tmp

pid process

3140 kat78D9.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
3140	kat78D9.tmp

Suspicious use of SetThreadContext 1 IoCs

Processes:

cdb96fe401203d67b6617aebdf69adab0e19a33af333974fa585018e93729ae7.exe

description	pid	process	target process
PID 4384 set thread context of 3140	4384	cdb96fe401203d67b6617aebdf69adab0e19a33af333974fa585018e93729ae7.exe	kat78D9.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:

kat78D9.tmp

description ioc process

Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString kat78D9.tmp
Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

kat78D9.tmp

pid process

3140 kat78D9.tmp
3140 kat78D9.tmp

description	ioc	process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	kat78D9.tmp

pid	process
3140	kat78D9.tmp
3140	kat78D9.tmp

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

cdb96fe401203d67b6617aebdf69adab0e19a33af333974fa585018e93729ae7.exe

description	pid	process	target process
PID 4384 wrote to memory of 3140	4384	cdb96fe401203d67b6617aebdf69adab0e19a33af333974fa585018e93729ae7.exe	kat78D9.tmp
PID 4384 wrote to memory of 3140	4384	cdb96fe401203d67b6617aebdf69adab0e19a33af333974fa585018e93729ae7.exe	kat78D9.tmp
PID 4384 wrote to memory of 3140	4384	cdb96fe401203d67b6617aebdf69adab0e19a33af333974fa585018e93729ae7.exe	kat78D9.tmp
PID 4384 wrote to memory of 3140	4384	cdb96fe401203d67b6617aebdf69adab0e19a33af333974fa585018e93729ae7.exe	kat78D9.tmp
PID 4384 wrote to memory of 3140	4384	cdb96fe401203d67b6617aebdf69adab0e19a33af333974fa585018e93729ae7.exe	kat78D9.tmp
PID 4384 wrote to memory of 3140	4384	cdb96fe401203d67b6617aebdf69adab0e19a33af333974fa585018e93729ae7.exe	kat78D9.tmp
PID 4384 wrote to memory of 3140	4384	cdb96fe401203d67b6617aebdf69adab0e19a33af333974fa585018e93729ae7.exe	kat78D9.tmp
PID 4384 wrote to memory of 3140	4384	cdb96fe401203d67b6617aebdf69adab0e19a33af333974fa585018e93729ae7.exe	kat78D9.tmp

C:\Users\Admin\AppData\Local\Temp\cdb96fe401203d67b6617aebdf69adab0e19a33af333974fa585018e93729ae7.exe
"C:\Users\Admin\AppData\Local\Temp\cdb96fe401203d67b6617aebdf69adab0e19a33af333974fa585018e93729ae7.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4384

C:\Users\Admin\AppData\Local\Temp\kat78D9.tmp
C:\Users\Admin\AppData\Local\Temp\kat78D9.tmp
2⤵
- Executes dropped EXE
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
PID:3140

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

2

T1012

System Information Discovery

1

T1082

Lateral Movement

Collection

Data from Local System

1

T1005

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Temp\kat78D9.tmp
Filesize
861KB

MD5
66064dbdb70a5eb15ebf3bf65aba254b

SHA1
0284fd320f99f62aca800fb1251eff4c31ec4ed7

SHA256
6a94dbda2dd1edcff2331061d65e1baf09d4861cc7ba590c5ec754f3ac96a795

SHA512
b05c6c09ae7372c381fba591c3cb13a69a2451b9d38da1a95aac89413d7438083475d06796acb5440cd6ec65b030c9fa6cbdaa0d2fe91a926bae6499c360f17f

Download Submit
memory/3140-4-0x0000000000400000-0x0000000000646000-memory.dmp

Filesize
2.3MB

Download
memory/3140-8-0x0000000000400000-0x0000000000646000-memory.dmp

Filesize
2.3MB

Download
memory/3140-9-0x0000000000400000-0x0000000000646000-memory.dmp

Filesize
2.3MB

Download
memory/3140-19-0x0000000000400000-0x0000000000646000-memory.dmp

Filesize
2.3MB

Download
memory/3140-20-0x0000000000400000-0x0000000000646000-memory.dmp

Filesize
2.3MB

Download
memory/3140-22-0x000000001B890000-0x000000001BAEF000-memory.dmp

Filesize
2.4MB

Download
memory/3140-37-0x0000000000400000-0x0000000000646000-memory.dmp

Filesize
2.3MB

Download
memory/3140-38-0x0000000000400000-0x0000000000646000-memory.dmp

Filesize
2.3MB

Download
memory/4384-0-0x0000000002360000-0x0000000002361000-memory.dmp

Filesize
4KB

Download
memory/4384-2-0x0000000004080000-0x00000000041C9000-memory.dmp

Filesize
1.3MB

Download
memory/4384-10-0x0000000000400000-0x000000000060C000-memory.dmp

Filesize
2.0MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v13

Replay Monitor

Loading Replay Monitor...

Downloads