stealc | 17f603f7a4512dda63bcf10410831f35cdf2bf8f2f9bd92267efc94e7394c402

General

Target

17f603f7a4512dda63bcf10410831f35cdf2bf8f2f9bd92267efc94e7394c402.exe
Size

2.0MB
MD5

3bf4b95a00e7e3f2bf6f348729356a9e
SHA1

535f17c394d408a69ed8678478c05a2b440a03c3
SHA256

17f603f7a4512dda63bcf10410831f35cdf2bf8f2f9bd92267efc94e7394c402
SHA512

a117fd1aa62438715cd3906bf0d04b157ea86997aee52ba52132ef21fe96346beee6ac77544edca3156a536f539570edef8661721fd30e49ccadbaeff36f5e4d
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
behavioral2/memory/2832-1-0x0000000004100000-0x0000000004249000-memory.dmp	family_vidar_v7
behavioral2/memory/3712-4-0x0000000000400000-0x0000000000646000-memory.dmp	family_vidar_v7
behavioral2/memory/3712-8-0x0000000000400000-0x0000000000646000-memory.dmp	family_vidar_v7
behavioral2/memory/3712-9-0x0000000000400000-0x0000000000646000-memory.dmp	family_vidar_v7
behavioral2/memory/3712-14-0x0000000000400000-0x0000000000646000-memory.dmp	family_vidar_v7
behavioral2/memory/3712-15-0x0000000000400000-0x0000000000646000-memory.dmp	family_vidar_v7
behavioral2/memory/3712-32-0x0000000000400000-0x0000000000646000-memory.dmp	family_vidar_v7
behavioral2/memory/3712-33-0x0000000000400000-0x0000000000646000-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:

katEBC7.tmp

pid process

3712 katEBC7.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
3712	katEBC7.tmp

Suspicious use of SetThreadContext 1 IoCs

Processes:

17f603f7a4512dda63bcf10410831f35cdf2bf8f2f9bd92267efc94e7394c402.exe

description	pid	process	target process
PID 2832 set thread context of 3712	2832	17f603f7a4512dda63bcf10410831f35cdf2bf8f2f9bd92267efc94e7394c402.exe	katEBC7.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:

katEBC7.tmp

description ioc process

Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString katEBC7.tmp
Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

katEBC7.tmp

pid process

3712 katEBC7.tmp
3712 katEBC7.tmp

description	ioc	process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	katEBC7.tmp

pid	process
3712	katEBC7.tmp
3712	katEBC7.tmp

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

17f603f7a4512dda63bcf10410831f35cdf2bf8f2f9bd92267efc94e7394c402.exe

description	pid	process	target process
PID 2832 wrote to memory of 3712	2832	17f603f7a4512dda63bcf10410831f35cdf2bf8f2f9bd92267efc94e7394c402.exe	katEBC7.tmp
PID 2832 wrote to memory of 3712	2832	17f603f7a4512dda63bcf10410831f35cdf2bf8f2f9bd92267efc94e7394c402.exe	katEBC7.tmp
PID 2832 wrote to memory of 3712	2832	17f603f7a4512dda63bcf10410831f35cdf2bf8f2f9bd92267efc94e7394c402.exe	katEBC7.tmp
PID 2832 wrote to memory of 3712	2832	17f603f7a4512dda63bcf10410831f35cdf2bf8f2f9bd92267efc94e7394c402.exe	katEBC7.tmp
PID 2832 wrote to memory of 3712	2832	17f603f7a4512dda63bcf10410831f35cdf2bf8f2f9bd92267efc94e7394c402.exe	katEBC7.tmp
PID 2832 wrote to memory of 3712	2832	17f603f7a4512dda63bcf10410831f35cdf2bf8f2f9bd92267efc94e7394c402.exe	katEBC7.tmp
PID 2832 wrote to memory of 3712	2832	17f603f7a4512dda63bcf10410831f35cdf2bf8f2f9bd92267efc94e7394c402.exe	katEBC7.tmp
PID 2832 wrote to memory of 3712	2832	17f603f7a4512dda63bcf10410831f35cdf2bf8f2f9bd92267efc94e7394c402.exe	katEBC7.tmp

C:\Users\Admin\AppData\Local\Temp\17f603f7a4512dda63bcf10410831f35cdf2bf8f2f9bd92267efc94e7394c402.exe
"C:\Users\Admin\AppData\Local\Temp\17f603f7a4512dda63bcf10410831f35cdf2bf8f2f9bd92267efc94e7394c402.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2832

C:\Users\Admin\AppData\Local\Temp\katEBC7.tmp
C:\Users\Admin\AppData\Local\Temp\katEBC7.tmp
2⤵
- Executes dropped EXE
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
PID:3712

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --field-trial-handle=3144,i,1697479186275492802,18058102846092193784,262144 --variations-seed-version --mojo-platform-channel-handle=4404 /prefetch:8
1⤵
PID:3528

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\katEBC7.tmp
Filesize
861KB

MD5
66064dbdb70a5eb15ebf3bf65aba254b

SHA1
0284fd320f99f62aca800fb1251eff4c31ec4ed7

SHA256
6a94dbda2dd1edcff2331061d65e1baf09d4861cc7ba590c5ec754f3ac96a795

SHA512
b05c6c09ae7372c381fba591c3cb13a69a2451b9d38da1a95aac89413d7438083475d06796acb5440cd6ec65b030c9fa6cbdaa0d2fe91a926bae6499c360f17f

Download Submit
memory/2832-0-0x00000000007C0000-0x00000000007C1000-memory.dmp

Filesize
4KB

Download
memory/2832-1-0x0000000004100000-0x0000000004249000-memory.dmp

Filesize
1.3MB

Download
memory/2832-10-0x0000000000400000-0x000000000060C000-memory.dmp

Filesize
2.0MB

Download
memory/3712-4-0x0000000000400000-0x0000000000646000-memory.dmp

Filesize
2.3MB

Download
memory/3712-8-0x0000000000400000-0x0000000000646000-memory.dmp

Filesize
2.3MB

Download
memory/3712-9-0x0000000000400000-0x0000000000646000-memory.dmp

Filesize
2.3MB

Download
memory/3712-14-0x0000000000400000-0x0000000000646000-memory.dmp

Filesize
2.3MB

Download
memory/3712-15-0x0000000000400000-0x0000000000646000-memory.dmp

Filesize
2.3MB

Download
memory/3712-18-0x000000001B730000-0x000000001B98F000-memory.dmp

Filesize
2.4MB

Download
memory/3712-32-0x0000000000400000-0x0000000000646000-memory.dmp

Filesize
2.3MB

Download
memory/3712-33-0x0000000000400000-0x0000000000646000-memory.dmp

Filesize
2.3MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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