stealc | 7382e2d12a0f1b6cdb9ea2ec8f4277c19c2480b3c973387de46f583cec8dbe77

General

Target

7382e2d12a0f1b6cdb9ea2ec8f4277c19c2480b3c973387de46f583cec8dbe77.exe
Size

1.9MB
MD5

ab0f980e39b9d1702c44fcaa36c2b228
SHA1

5ba505a1415e8cf30fa6e04a392a5fee6fd4b1e9
SHA256

7382e2d12a0f1b6cdb9ea2ec8f4277c19c2480b3c973387de46f583cec8dbe77
SHA512

af17ccad2274d53fb05f5a4e5585b2fa273b0a7191faa7f7732373cc93a51fa3b2d0935e4807a465a2702046bac2e4c06d889aef3a173aaaa579e3519db0b5fe
SSDEEP

49152:CdKfTn6vGJtTF+TxMoxc1TU+j+dAzGwlrh:CdKfTnFtIuoITsdZ

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/4120-1-0x00000000040A0000-0x00000000041E9000-memory.dmp	family_vidar_v7
behavioral2/memory/704-8-0x0000000000400000-0x0000000000646000-memory.dmp	family_vidar_v7
behavioral2/memory/704-4-0x0000000000400000-0x0000000000646000-memory.dmp	family_vidar_v7
behavioral2/memory/704-10-0x0000000000400000-0x0000000000646000-memory.dmp	family_vidar_v7
behavioral2/memory/704-16-0x0000000000400000-0x0000000000646000-memory.dmp	family_vidar_v7
behavioral2/memory/704-17-0x0000000000400000-0x0000000000646000-memory.dmp	family_vidar_v7
behavioral2/memory/704-34-0x0000000000400000-0x0000000000646000-memory.dmp	family_vidar_v7
behavioral2/memory/704-35-0x0000000000400000-0x0000000000646000-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:

kat5D33.tmp

pid process

704 kat5D33.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
704	kat5D33.tmp

Suspicious use of SetThreadContext 1 IoCs

Processes:

7382e2d12a0f1b6cdb9ea2ec8f4277c19c2480b3c973387de46f583cec8dbe77.exe

description	pid	process	target process
PID 4120 set thread context of 704	4120	7382e2d12a0f1b6cdb9ea2ec8f4277c19c2480b3c973387de46f583cec8dbe77.exe	kat5D33.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:

kat5D33.tmp

description ioc process

Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString kat5D33.tmp
Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

kat5D33.tmp

pid process

704 kat5D33.tmp
704 kat5D33.tmp

description	ioc	process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	kat5D33.tmp

pid	process
704	kat5D33.tmp
704	kat5D33.tmp

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

7382e2d12a0f1b6cdb9ea2ec8f4277c19c2480b3c973387de46f583cec8dbe77.exe

description	pid	process	target process
PID 4120 wrote to memory of 704	4120	7382e2d12a0f1b6cdb9ea2ec8f4277c19c2480b3c973387de46f583cec8dbe77.exe	kat5D33.tmp
PID 4120 wrote to memory of 704	4120	7382e2d12a0f1b6cdb9ea2ec8f4277c19c2480b3c973387de46f583cec8dbe77.exe	kat5D33.tmp
PID 4120 wrote to memory of 704	4120	7382e2d12a0f1b6cdb9ea2ec8f4277c19c2480b3c973387de46f583cec8dbe77.exe	kat5D33.tmp
PID 4120 wrote to memory of 704	4120	7382e2d12a0f1b6cdb9ea2ec8f4277c19c2480b3c973387de46f583cec8dbe77.exe	kat5D33.tmp
PID 4120 wrote to memory of 704	4120	7382e2d12a0f1b6cdb9ea2ec8f4277c19c2480b3c973387de46f583cec8dbe77.exe	kat5D33.tmp
PID 4120 wrote to memory of 704	4120	7382e2d12a0f1b6cdb9ea2ec8f4277c19c2480b3c973387de46f583cec8dbe77.exe	kat5D33.tmp
PID 4120 wrote to memory of 704	4120	7382e2d12a0f1b6cdb9ea2ec8f4277c19c2480b3c973387de46f583cec8dbe77.exe	kat5D33.tmp
PID 4120 wrote to memory of 704	4120	7382e2d12a0f1b6cdb9ea2ec8f4277c19c2480b3c973387de46f583cec8dbe77.exe	kat5D33.tmp

C:\Users\Admin\AppData\Local\Temp\7382e2d12a0f1b6cdb9ea2ec8f4277c19c2480b3c973387de46f583cec8dbe77.exe
"C:\Users\Admin\AppData\Local\Temp\7382e2d12a0f1b6cdb9ea2ec8f4277c19c2480b3c973387de46f583cec8dbe77.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4120

C:\Users\Admin\AppData\Local\Temp\kat5D33.tmp
C:\Users\Admin\AppData\Local\Temp\kat5D33.tmp
2⤵
- Executes dropped EXE
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
PID:704

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\kat5D33.tmp
Filesize
861KB

MD5
66064dbdb70a5eb15ebf3bf65aba254b

SHA1
0284fd320f99f62aca800fb1251eff4c31ec4ed7

SHA256
6a94dbda2dd1edcff2331061d65e1baf09d4861cc7ba590c5ec754f3ac96a795

SHA512
b05c6c09ae7372c381fba591c3cb13a69a2451b9d38da1a95aac89413d7438083475d06796acb5440cd6ec65b030c9fa6cbdaa0d2fe91a926bae6499c360f17f

Download Submit
memory/704-8-0x0000000000400000-0x0000000000646000-memory.dmp

Filesize
2.3MB

Download
memory/704-4-0x0000000000400000-0x0000000000646000-memory.dmp

Filesize
2.3MB

Download
memory/704-10-0x0000000000400000-0x0000000000646000-memory.dmp

Filesize
2.3MB

Download
memory/704-16-0x0000000000400000-0x0000000000646000-memory.dmp

Filesize
2.3MB

Download
memory/704-17-0x0000000000400000-0x0000000000646000-memory.dmp

Filesize
2.3MB

Download
memory/704-19-0x0000000019410000-0x000000001966F000-memory.dmp

Filesize
2.4MB

Download
memory/704-34-0x0000000000400000-0x0000000000646000-memory.dmp

Filesize
2.3MB

Download
memory/704-35-0x0000000000400000-0x0000000000646000-memory.dmp

Filesize
2.3MB

Download
memory/4120-0-0x00000000008A0000-0x00000000008A1000-memory.dmp

Filesize
4KB

Download
memory/4120-1-0x00000000040A0000-0x00000000041E9000-memory.dmp

Filesize
1.3MB

Download
memory/4120-9-0x0000000000400000-0x00000000005EC000-memory.dmp

Filesize
1.9MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads