stealc | 92927ec504b479d7c379cc85ee6d3353619e394722cad1e9987c3081b3799d9d

General

Target

92927ec504b479d7c379cc85ee6d3353619e394722cad1e9987c3081b3799d9d.exe
Size

1.9MB
MD5

2d6d44708edfafa3b6852ef12834a7a6
SHA1

e2b88770808c0c7f5e4a93cfce8c4906ec1e86e7
SHA256

92927ec504b479d7c379cc85ee6d3353619e394722cad1e9987c3081b3799d9d
SHA512

4fd382499f314e2adbee770714edee4d0faddf873ac746649d6d2fc2ac1b67208ae139d0007a24ff2ca866f3c0b393b5227fcdd0569970cf6a1e09b7b0c33c77
SSDEEP

49152:CdKfTn6vCJtTF+TxMoxc1TU+j+dAzGwlrh:CdKfTnBtIuoITsdZ

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/4936-2-0x0000000004000000-0x0000000004149000-memory.dmp	family_vidar_v7
behavioral2/memory/3816-4-0x0000000000400000-0x0000000000646000-memory.dmp	family_vidar_v7
behavioral2/memory/3816-8-0x0000000000400000-0x0000000000646000-memory.dmp	family_vidar_v7
behavioral2/memory/3816-9-0x0000000000400000-0x0000000000646000-memory.dmp	family_vidar_v7
behavioral2/memory/3816-16-0x0000000000400000-0x0000000000646000-memory.dmp	family_vidar_v7
behavioral2/memory/3816-17-0x0000000000400000-0x0000000000646000-memory.dmp	family_vidar_v7
behavioral2/memory/3816-34-0x0000000000400000-0x0000000000646000-memory.dmp	family_vidar_v7
behavioral2/memory/3816-35-0x0000000000400000-0x0000000000646000-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:

kat68DC.tmp

pid process

3816 kat68DC.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
3816	kat68DC.tmp

Suspicious use of SetThreadContext 1 IoCs

Processes:

92927ec504b479d7c379cc85ee6d3353619e394722cad1e9987c3081b3799d9d.exe

description	pid	process	target process
PID 4936 set thread context of 3816	4936	92927ec504b479d7c379cc85ee6d3353619e394722cad1e9987c3081b3799d9d.exe	kat68DC.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:

kat68DC.tmp

description ioc process

Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString kat68DC.tmp
Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

kat68DC.tmp

pid process

3816 kat68DC.tmp
3816 kat68DC.tmp

description	ioc	process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	kat68DC.tmp

pid	process
3816	kat68DC.tmp
3816	kat68DC.tmp

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

92927ec504b479d7c379cc85ee6d3353619e394722cad1e9987c3081b3799d9d.exe

description	pid	process	target process
PID 4936 wrote to memory of 3816	4936	92927ec504b479d7c379cc85ee6d3353619e394722cad1e9987c3081b3799d9d.exe	kat68DC.tmp
PID 4936 wrote to memory of 3816	4936	92927ec504b479d7c379cc85ee6d3353619e394722cad1e9987c3081b3799d9d.exe	kat68DC.tmp
PID 4936 wrote to memory of 3816	4936	92927ec504b479d7c379cc85ee6d3353619e394722cad1e9987c3081b3799d9d.exe	kat68DC.tmp
PID 4936 wrote to memory of 3816	4936	92927ec504b479d7c379cc85ee6d3353619e394722cad1e9987c3081b3799d9d.exe	kat68DC.tmp
PID 4936 wrote to memory of 3816	4936	92927ec504b479d7c379cc85ee6d3353619e394722cad1e9987c3081b3799d9d.exe	kat68DC.tmp
PID 4936 wrote to memory of 3816	4936	92927ec504b479d7c379cc85ee6d3353619e394722cad1e9987c3081b3799d9d.exe	kat68DC.tmp
PID 4936 wrote to memory of 3816	4936	92927ec504b479d7c379cc85ee6d3353619e394722cad1e9987c3081b3799d9d.exe	kat68DC.tmp
PID 4936 wrote to memory of 3816	4936	92927ec504b479d7c379cc85ee6d3353619e394722cad1e9987c3081b3799d9d.exe	kat68DC.tmp

C:\Users\Admin\AppData\Local\Temp\92927ec504b479d7c379cc85ee6d3353619e394722cad1e9987c3081b3799d9d.exe
"C:\Users\Admin\AppData\Local\Temp\92927ec504b479d7c379cc85ee6d3353619e394722cad1e9987c3081b3799d9d.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4936

C:\Users\Admin\AppData\Local\Temp\kat68DC.tmp
C:\Users\Admin\AppData\Local\Temp\kat68DC.tmp
2⤵
- Executes dropped EXE
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
PID:3816

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\kat68DC.tmp
Filesize
861KB

MD5
66064dbdb70a5eb15ebf3bf65aba254b

SHA1
0284fd320f99f62aca800fb1251eff4c31ec4ed7

SHA256
6a94dbda2dd1edcff2331061d65e1baf09d4861cc7ba590c5ec754f3ac96a795

SHA512
b05c6c09ae7372c381fba591c3cb13a69a2451b9d38da1a95aac89413d7438083475d06796acb5440cd6ec65b030c9fa6cbdaa0d2fe91a926bae6499c360f17f

Download Submit
memory/3816-4-0x0000000000400000-0x0000000000646000-memory.dmp

Filesize
2.3MB

Download
memory/3816-8-0x0000000000400000-0x0000000000646000-memory.dmp

Filesize
2.3MB

Download
memory/3816-9-0x0000000000400000-0x0000000000646000-memory.dmp

Filesize
2.3MB

Download
memory/3816-16-0x0000000000400000-0x0000000000646000-memory.dmp

Filesize
2.3MB

Download
memory/3816-17-0x0000000000400000-0x0000000000646000-memory.dmp

Filesize
2.3MB

Download
memory/3816-19-0x000000001B860000-0x000000001BABF000-memory.dmp

Filesize
2.4MB

Download
memory/3816-34-0x0000000000400000-0x0000000000646000-memory.dmp

Filesize
2.3MB

Download
memory/3816-35-0x0000000000400000-0x0000000000646000-memory.dmp

Filesize
2.3MB

Download
memory/4936-0-0x00000000008B0000-0x00000000008B1000-memory.dmp

Filesize
4KB

Download
memory/4936-2-0x0000000004000000-0x0000000004149000-memory.dmp

Filesize
1.3MB

Download
memory/4936-10-0x0000000000400000-0x00000000005EC000-memory.dmp

Filesize
1.9MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads