stealc | ca824063e8c7314965676fe79d070e85bf5318557873481ed572f18045469610

General

Target

ca824063e8c7314965676fe79d070e85bf5318557873481ed572f18045469610.exe
Size

2.0MB
MD5

5350325dada034c32fed608093b3e031
SHA1

c02697defc30a64610ca7230125f9f37290c3f30
SHA256

ca824063e8c7314965676fe79d070e85bf5318557873481ed572f18045469610
SHA512

b3a80c5dc9a934442666ae9e2fbf791189bc8b07f190d34d5ce273a0334bfd5fa54550975b3818e8d5c574a995f4bc879b7c80563565e64d3206d02f01ed7c41
SSDEEP

49152:s4K3x1vUKJtTF+TxMoxc1TU+j+dAzGwlrh:s4Ex18KtIuoITsdZ

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
behavioral1/memory/3528-1-0x0000000004050000-0x0000000004199000-memory.dmp	family_vidar_v7
behavioral1/memory/540-9-0x0000000000400000-0x0000000000646000-memory.dmp	family_vidar_v7
behavioral1/memory/540-8-0x0000000000400000-0x0000000000646000-memory.dmp	family_vidar_v7
behavioral1/memory/540-4-0x0000000000400000-0x0000000000646000-memory.dmp	family_vidar_v7
behavioral1/memory/540-17-0x0000000000400000-0x0000000000646000-memory.dmp	family_vidar_v7
behavioral1/memory/540-18-0x0000000000400000-0x0000000000646000-memory.dmp	family_vidar_v7
behavioral1/memory/540-35-0x0000000000400000-0x0000000000646000-memory.dmp	family_vidar_v7
behavioral1/memory/540-36-0x0000000000400000-0x0000000000646000-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:

kat3354.tmp

pid process

540 kat3354.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
540	kat3354.tmp

Suspicious use of SetThreadContext 1 IoCs

Processes:

ca824063e8c7314965676fe79d070e85bf5318557873481ed572f18045469610.exe

description	pid	process	target process
PID 3528 set thread context of 540	3528	ca824063e8c7314965676fe79d070e85bf5318557873481ed572f18045469610.exe	kat3354.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:

kat3354.tmp

description ioc process

Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString kat3354.tmp
Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

kat3354.tmp

pid process

540 kat3354.tmp
540 kat3354.tmp

description	ioc	process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	kat3354.tmp

pid	process
540	kat3354.tmp
540	kat3354.tmp

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

ca824063e8c7314965676fe79d070e85bf5318557873481ed572f18045469610.exe

description	pid	process	target process
PID 3528 wrote to memory of 540	3528	ca824063e8c7314965676fe79d070e85bf5318557873481ed572f18045469610.exe	kat3354.tmp
PID 3528 wrote to memory of 540	3528	ca824063e8c7314965676fe79d070e85bf5318557873481ed572f18045469610.exe	kat3354.tmp
PID 3528 wrote to memory of 540	3528	ca824063e8c7314965676fe79d070e85bf5318557873481ed572f18045469610.exe	kat3354.tmp
PID 3528 wrote to memory of 540	3528	ca824063e8c7314965676fe79d070e85bf5318557873481ed572f18045469610.exe	kat3354.tmp
PID 3528 wrote to memory of 540	3528	ca824063e8c7314965676fe79d070e85bf5318557873481ed572f18045469610.exe	kat3354.tmp
PID 3528 wrote to memory of 540	3528	ca824063e8c7314965676fe79d070e85bf5318557873481ed572f18045469610.exe	kat3354.tmp
PID 3528 wrote to memory of 540	3528	ca824063e8c7314965676fe79d070e85bf5318557873481ed572f18045469610.exe	kat3354.tmp
PID 3528 wrote to memory of 540	3528	ca824063e8c7314965676fe79d070e85bf5318557873481ed572f18045469610.exe	kat3354.tmp

C:\Users\Admin\AppData\Local\Temp\ca824063e8c7314965676fe79d070e85bf5318557873481ed572f18045469610.exe
"C:\Users\Admin\AppData\Local\Temp\ca824063e8c7314965676fe79d070e85bf5318557873481ed572f18045469610.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:3528

C:\Users\Admin\AppData\Local\Temp\kat3354.tmp
C:\Users\Admin\AppData\Local\Temp\kat3354.tmp
2⤵
- Executes dropped EXE
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
PID:540

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

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Downloads

C:\Users\Admin\AppData\Local\Temp\kat3354.tmp

Filesize
861KB

MD5
66064dbdb70a5eb15ebf3bf65aba254b

SHA1
0284fd320f99f62aca800fb1251eff4c31ec4ed7

SHA256
6a94dbda2dd1edcff2331061d65e1baf09d4861cc7ba590c5ec754f3ac96a795

SHA512
b05c6c09ae7372c381fba591c3cb13a69a2451b9d38da1a95aac89413d7438083475d06796acb5440cd6ec65b030c9fa6cbdaa0d2fe91a926bae6499c360f17f

Download Submit
memory/540-9-0x0000000000400000-0x0000000000646000-memory.dmp

Filesize
2.3MB

Download
memory/540-8-0x0000000000400000-0x0000000000646000-memory.dmp

Filesize
2.3MB

Download
memory/540-4-0x0000000000400000-0x0000000000646000-memory.dmp

Filesize
2.3MB

Download
memory/540-17-0x0000000000400000-0x0000000000646000-memory.dmp

Filesize
2.3MB

Download
memory/540-18-0x0000000000400000-0x0000000000646000-memory.dmp

Filesize
2.3MB

Download
memory/540-20-0x000000001DC10000-0x000000001DE6F000-memory.dmp

Filesize
2.4MB

Download
memory/540-35-0x0000000000400000-0x0000000000646000-memory.dmp

Filesize
2.3MB

Download
memory/540-36-0x0000000000400000-0x0000000000646000-memory.dmp

Filesize
2.3MB

Download
memory/3528-0-0x0000000002240000-0x0000000002241000-memory.dmp

Filesize
4KB

Download
memory/3528-1-0x0000000004050000-0x0000000004199000-memory.dmp

Filesize
1.3MB

Download
memory/3528-10-0x0000000000400000-0x000000000060C000-memory.dmp

Filesize
2.0MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads