stealc | 5b020ca97bcd0211fe9f77547987a0dc617ef3c69e312e5f578057f1d128c609

General

Target

5b020ca97bcd0211fe9f77547987a0dc617ef3c69e312e5f578057f1d128c609.exe
Size

2.0MB
MD5

f6eba94f7b1a285f9c487f9b5afcb5c1
SHA1

98279be4fa42e125e7a0fcc8a26eef242913e482
SHA256

5b020ca97bcd0211fe9f77547987a0dc617ef3c69e312e5f578057f1d128c609
SHA512

39d6c3120fa08bb498ef87533d3c9b8e6b8bea78c69c736e345dc151d73407f834133967980c7af99504568534b96e78693d5845dcd6d243915bda7c58e06019
SSDEEP

49152:s4K3x1vUeJtTF+TxMoxc1TU+j+dAzGwlrh:s4Ex18etIuoITsdZ

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/4564-2-0x0000000004090000-0x00000000041D9000-memory.dmp	family_vidar_v7
behavioral1/memory/2872-8-0x0000000000400000-0x0000000000646000-memory.dmp	family_vidar_v7
behavioral1/memory/2872-10-0x0000000000400000-0x0000000000646000-memory.dmp	family_vidar_v7
behavioral1/memory/2872-4-0x0000000000400000-0x0000000000646000-memory.dmp	family_vidar_v7
behavioral1/memory/2872-17-0x0000000000400000-0x0000000000646000-memory.dmp	family_vidar_v7
behavioral1/memory/2872-18-0x0000000000400000-0x0000000000646000-memory.dmp	family_vidar_v7
behavioral1/memory/2872-35-0x0000000000400000-0x0000000000646000-memory.dmp	family_vidar_v7
behavioral1/memory/2872-36-0x0000000000400000-0x0000000000646000-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:

kat321C.tmp

pid process

2872 kat321C.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
2872	kat321C.tmp

Suspicious use of SetThreadContext 1 IoCs

Processes:

5b020ca97bcd0211fe9f77547987a0dc617ef3c69e312e5f578057f1d128c609.exe

description	pid	process	target process
PID 4564 set thread context of 2872	4564	5b020ca97bcd0211fe9f77547987a0dc617ef3c69e312e5f578057f1d128c609.exe	kat321C.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:

kat321C.tmp

description ioc process

Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString kat321C.tmp
Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

kat321C.tmp

pid process

2872 kat321C.tmp
2872 kat321C.tmp

description	ioc	process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	kat321C.tmp

pid	process
2872	kat321C.tmp
2872	kat321C.tmp

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

5b020ca97bcd0211fe9f77547987a0dc617ef3c69e312e5f578057f1d128c609.exe

description	pid	process	target process
PID 4564 wrote to memory of 2872	4564	5b020ca97bcd0211fe9f77547987a0dc617ef3c69e312e5f578057f1d128c609.exe	kat321C.tmp
PID 4564 wrote to memory of 2872	4564	5b020ca97bcd0211fe9f77547987a0dc617ef3c69e312e5f578057f1d128c609.exe	kat321C.tmp
PID 4564 wrote to memory of 2872	4564	5b020ca97bcd0211fe9f77547987a0dc617ef3c69e312e5f578057f1d128c609.exe	kat321C.tmp
PID 4564 wrote to memory of 2872	4564	5b020ca97bcd0211fe9f77547987a0dc617ef3c69e312e5f578057f1d128c609.exe	kat321C.tmp
PID 4564 wrote to memory of 2872	4564	5b020ca97bcd0211fe9f77547987a0dc617ef3c69e312e5f578057f1d128c609.exe	kat321C.tmp
PID 4564 wrote to memory of 2872	4564	5b020ca97bcd0211fe9f77547987a0dc617ef3c69e312e5f578057f1d128c609.exe	kat321C.tmp
PID 4564 wrote to memory of 2872	4564	5b020ca97bcd0211fe9f77547987a0dc617ef3c69e312e5f578057f1d128c609.exe	kat321C.tmp
PID 4564 wrote to memory of 2872	4564	5b020ca97bcd0211fe9f77547987a0dc617ef3c69e312e5f578057f1d128c609.exe	kat321C.tmp

C:\Users\Admin\AppData\Local\Temp\5b020ca97bcd0211fe9f77547987a0dc617ef3c69e312e5f578057f1d128c609.exe
"C:\Users\Admin\AppData\Local\Temp\5b020ca97bcd0211fe9f77547987a0dc617ef3c69e312e5f578057f1d128c609.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4564

C:\Users\Admin\AppData\Local\Temp\kat321C.tmp
C:\Users\Admin\AppData\Local\Temp\kat321C.tmp
2⤵
- Executes dropped EXE
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
PID:2872

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\kat321C.tmp
Filesize
861KB

MD5
66064dbdb70a5eb15ebf3bf65aba254b

SHA1
0284fd320f99f62aca800fb1251eff4c31ec4ed7

SHA256
6a94dbda2dd1edcff2331061d65e1baf09d4861cc7ba590c5ec754f3ac96a795

SHA512
b05c6c09ae7372c381fba591c3cb13a69a2451b9d38da1a95aac89413d7438083475d06796acb5440cd6ec65b030c9fa6cbdaa0d2fe91a926bae6499c360f17f

Download Submit
memory/2872-8-0x0000000000400000-0x0000000000646000-memory.dmp

Filesize
2.3MB

Download
memory/2872-10-0x0000000000400000-0x0000000000646000-memory.dmp

Filesize
2.3MB

Download
memory/2872-4-0x0000000000400000-0x0000000000646000-memory.dmp

Filesize
2.3MB

Download
memory/2872-17-0x0000000000400000-0x0000000000646000-memory.dmp

Filesize
2.3MB

Download
memory/2872-18-0x0000000000400000-0x0000000000646000-memory.dmp

Filesize
2.3MB

Download
memory/2872-20-0x000000001DC40000-0x000000001DE9F000-memory.dmp

Filesize
2.4MB

Download
memory/2872-35-0x0000000000400000-0x0000000000646000-memory.dmp

Filesize
2.3MB

Download
memory/2872-36-0x0000000000400000-0x0000000000646000-memory.dmp

Filesize
2.3MB

Download
memory/4564-0-0x0000000002260000-0x0000000002261000-memory.dmp

Filesize
4KB

Download
memory/4564-2-0x0000000004090000-0x00000000041D9000-memory.dmp

Filesize
1.3MB

Download
memory/4564-9-0x0000000000400000-0x000000000060C000-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