stealc | 19c5da486734eb34499ff1a9d9e5c48a921237b5d3b6ce363596ae281d8a46ac

General

Target

19c5da486734eb34499ff1a9d9e5c48a921237b5d3b6ce363596ae281d8a46ac.exe
Size

2.0MB
MD5

d172f4efeb2bbe525ace5b59a821c9ed
SHA1

ac38dbbb9c9fb383dab5eb90991d5edb45131caa
SHA256

19c5da486734eb34499ff1a9d9e5c48a921237b5d3b6ce363596ae281d8a46ac
SHA512

98dda633c63a573fdb6d2988009ddee6a6c39893df53f70380dd1a9ad886d99ae6cefc485b4703c8bec6fdd1281dce91de772e7313303df678b7894f7d537919
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/4772-2-0x0000000004190000-0x00000000042D9000-memory.dmp	family_vidar_v7
behavioral2/memory/2164-8-0x0000000000400000-0x0000000000646000-memory.dmp	family_vidar_v7
behavioral2/memory/2164-10-0x0000000000400000-0x0000000000646000-memory.dmp	family_vidar_v7
behavioral2/memory/2164-4-0x0000000000400000-0x0000000000646000-memory.dmp	family_vidar_v7
behavioral2/memory/2164-14-0x0000000000400000-0x0000000000646000-memory.dmp	family_vidar_v7
behavioral2/memory/2164-15-0x0000000000400000-0x0000000000646000-memory.dmp	family_vidar_v7
behavioral2/memory/2164-32-0x0000000000400000-0x0000000000646000-memory.dmp	family_vidar_v7
behavioral2/memory/2164-33-0x0000000000400000-0x0000000000646000-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:

kat2700.tmp

pid process

2164 kat2700.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
2164	kat2700.tmp

Suspicious use of SetThreadContext 1 IoCs

Processes:

19c5da486734eb34499ff1a9d9e5c48a921237b5d3b6ce363596ae281d8a46ac.exe

description	pid	process	target process
PID 4772 set thread context of 2164	4772	19c5da486734eb34499ff1a9d9e5c48a921237b5d3b6ce363596ae281d8a46ac.exe	kat2700.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:

kat2700.tmp

description ioc process

Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString kat2700.tmp
Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

kat2700.tmp

pid process

2164 kat2700.tmp
2164 kat2700.tmp

description	ioc	process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	kat2700.tmp

pid	process
2164	kat2700.tmp
2164	kat2700.tmp

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

19c5da486734eb34499ff1a9d9e5c48a921237b5d3b6ce363596ae281d8a46ac.exe

description	pid	process	target process
PID 4772 wrote to memory of 2164	4772	19c5da486734eb34499ff1a9d9e5c48a921237b5d3b6ce363596ae281d8a46ac.exe	kat2700.tmp
PID 4772 wrote to memory of 2164	4772	19c5da486734eb34499ff1a9d9e5c48a921237b5d3b6ce363596ae281d8a46ac.exe	kat2700.tmp
PID 4772 wrote to memory of 2164	4772	19c5da486734eb34499ff1a9d9e5c48a921237b5d3b6ce363596ae281d8a46ac.exe	kat2700.tmp
PID 4772 wrote to memory of 2164	4772	19c5da486734eb34499ff1a9d9e5c48a921237b5d3b6ce363596ae281d8a46ac.exe	kat2700.tmp
PID 4772 wrote to memory of 2164	4772	19c5da486734eb34499ff1a9d9e5c48a921237b5d3b6ce363596ae281d8a46ac.exe	kat2700.tmp
PID 4772 wrote to memory of 2164	4772	19c5da486734eb34499ff1a9d9e5c48a921237b5d3b6ce363596ae281d8a46ac.exe	kat2700.tmp
PID 4772 wrote to memory of 2164	4772	19c5da486734eb34499ff1a9d9e5c48a921237b5d3b6ce363596ae281d8a46ac.exe	kat2700.tmp
PID 4772 wrote to memory of 2164	4772	19c5da486734eb34499ff1a9d9e5c48a921237b5d3b6ce363596ae281d8a46ac.exe	kat2700.tmp

C:\Users\Admin\AppData\Local\Temp\19c5da486734eb34499ff1a9d9e5c48a921237b5d3b6ce363596ae281d8a46ac.exe
"C:\Users\Admin\AppData\Local\Temp\19c5da486734eb34499ff1a9d9e5c48a921237b5d3b6ce363596ae281d8a46ac.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4772

C:\Users\Admin\AppData\Local\Temp\kat2700.tmp
C:\Users\Admin\AppData\Local\Temp\kat2700.tmp
2⤵
- Executes dropped EXE
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
PID:2164

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

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Downloads

C:\Users\Admin\AppData\Local\Temp\kat2700.tmp
Filesize
861KB

MD5
66064dbdb70a5eb15ebf3bf65aba254b

SHA1
0284fd320f99f62aca800fb1251eff4c31ec4ed7

SHA256
6a94dbda2dd1edcff2331061d65e1baf09d4861cc7ba590c5ec754f3ac96a795

SHA512
b05c6c09ae7372c381fba591c3cb13a69a2451b9d38da1a95aac89413d7438083475d06796acb5440cd6ec65b030c9fa6cbdaa0d2fe91a926bae6499c360f17f

Download Submit
memory/2164-8-0x0000000000400000-0x0000000000646000-memory.dmp

Filesize
2.3MB

Download
memory/2164-10-0x0000000000400000-0x0000000000646000-memory.dmp

Filesize
2.3MB

Download
memory/2164-4-0x0000000000400000-0x0000000000646000-memory.dmp

Filesize
2.3MB

Download
memory/2164-14-0x0000000000400000-0x0000000000646000-memory.dmp

Filesize
2.3MB

Download
memory/2164-15-0x0000000000400000-0x0000000000646000-memory.dmp

Filesize
2.3MB

Download
memory/2164-17-0x000000001DBB0000-0x000000001DE0F000-memory.dmp

Filesize
2.4MB

Download
memory/2164-32-0x0000000000400000-0x0000000000646000-memory.dmp

Filesize
2.3MB

Download
memory/2164-33-0x0000000000400000-0x0000000000646000-memory.dmp

Filesize
2.3MB

Download
memory/4772-0-0x00000000023B0000-0x00000000023B1000-memory.dmp

Filesize
4KB

Download
memory/4772-2-0x0000000004190000-0x00000000042D9000-memory.dmp

Filesize
1.3MB

Download
memory/4772-9-0x0000000000400000-0x000000000060C000-memory.dmp

Filesize
2.0MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v13

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Downloads