stealc | 8dd5303574d1139eb32f3d974c3e7f8028f239b75db7f2723d3b215b771b182c

General

Target

8dd5303574d1139eb32f3d974c3e7f8028f239b75db7f2723d3b215b771b182c.exe
Size

1.9MB
MD5

0b9c39a0be0ab2bd1317486bbb3a133a
SHA1

3ab5156839e02bd89b39f9d2b01b234e315e3015
SHA256

8dd5303574d1139eb32f3d974c3e7f8028f239b75db7f2723d3b215b771b182c
SHA512

e65d555537f3248ed270d02864ae6f28df9f8ec2e2799309a28a199fa62183ebe45fe37b796bef4d3bddc941229059e19f378423837332849224410900c6d9a1
SSDEEP

49152:CdKfTn6v2JtTF+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

resource	yara_rule
behavioral1/memory/4424-2-0x0000000004050000-0x0000000004199000-memory.dmp	family_vidar_v7
behavioral1/memory/3456-4-0x0000000000400000-0x0000000000646000-memory.dmp	family_vidar_v7
behavioral1/memory/3456-9-0x0000000000400000-0x0000000000646000-memory.dmp	family_vidar_v7
behavioral1/memory/3456-8-0x0000000000400000-0x0000000000646000-memory.dmp	family_vidar_v7
behavioral1/memory/3456-17-0x0000000000400000-0x0000000000646000-memory.dmp	family_vidar_v7
behavioral1/memory/3456-18-0x0000000000400000-0x0000000000646000-memory.dmp	family_vidar_v7
behavioral1/memory/3456-35-0x0000000000400000-0x0000000000646000-memory.dmp	family_vidar_v7
behavioral1/memory/3456-36-0x0000000000400000-0x0000000000646000-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

pid	Process
3456	kat320C.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

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4424 set thread context of 3456	4424	8dd5303574d1139eb32f3d974c3e7f8028f239b75db7f2723d3b215b771b182c.exe	84

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

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	kat320C.tmp

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
3456	kat320C.tmp
3456	kat320C.tmp

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 4424 wrote to memory of 3456	4424	8dd5303574d1139eb32f3d974c3e7f8028f239b75db7f2723d3b215b771b182c.exe	84
PID 4424 wrote to memory of 3456	4424	8dd5303574d1139eb32f3d974c3e7f8028f239b75db7f2723d3b215b771b182c.exe	84
PID 4424 wrote to memory of 3456	4424	8dd5303574d1139eb32f3d974c3e7f8028f239b75db7f2723d3b215b771b182c.exe	84
PID 4424 wrote to memory of 3456	4424	8dd5303574d1139eb32f3d974c3e7f8028f239b75db7f2723d3b215b771b182c.exe	84
PID 4424 wrote to memory of 3456	4424	8dd5303574d1139eb32f3d974c3e7f8028f239b75db7f2723d3b215b771b182c.exe	84
PID 4424 wrote to memory of 3456	4424	8dd5303574d1139eb32f3d974c3e7f8028f239b75db7f2723d3b215b771b182c.exe	84
PID 4424 wrote to memory of 3456	4424	8dd5303574d1139eb32f3d974c3e7f8028f239b75db7f2723d3b215b771b182c.exe	84
PID 4424 wrote to memory of 3456	4424	8dd5303574d1139eb32f3d974c3e7f8028f239b75db7f2723d3b215b771b182c.exe	84

C:\Users\Admin\AppData\Local\Temp\8dd5303574d1139eb32f3d974c3e7f8028f239b75db7f2723d3b215b771b182c.exe
"C:\Users\Admin\AppData\Local\Temp\8dd5303574d1139eb32f3d974c3e7f8028f239b75db7f2723d3b215b771b182c.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4424
- C:\Users\Admin\AppData\Local\Temp\kat320C.tmp
  C:\Users\Admin\AppData\Local\Temp\kat320C.tmp
  2⤵
  - Executes dropped EXE
  - Checks processor information in registry
  - Suspicious behavior: EnumeratesProcesses
  PID:3456

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\kat320C.tmp

Filesize
861KB

MD5
66064dbdb70a5eb15ebf3bf65aba254b

SHA1
0284fd320f99f62aca800fb1251eff4c31ec4ed7

SHA256
6a94dbda2dd1edcff2331061d65e1baf09d4861cc7ba590c5ec754f3ac96a795

SHA512
b05c6c09ae7372c381fba591c3cb13a69a2451b9d38da1a95aac89413d7438083475d06796acb5440cd6ec65b030c9fa6cbdaa0d2fe91a926bae6499c360f17f

Download Submit
memory/3456-4-0x0000000000400000-0x0000000000646000-memory.dmp

Filesize
2.3MB

Download
memory/3456-9-0x0000000000400000-0x0000000000646000-memory.dmp

Filesize
2.3MB

Download
memory/3456-8-0x0000000000400000-0x0000000000646000-memory.dmp

Filesize
2.3MB

Download
memory/3456-17-0x0000000000400000-0x0000000000646000-memory.dmp

Filesize
2.3MB

Download
memory/3456-18-0x0000000000400000-0x0000000000646000-memory.dmp

Filesize
2.3MB

Download
memory/3456-21-0x000000001B810000-0x000000001BA6F000-memory.dmp

Filesize
2.4MB

Download
memory/3456-35-0x0000000000400000-0x0000000000646000-memory.dmp

Filesize
2.3MB

Download
memory/3456-36-0x0000000000400000-0x0000000000646000-memory.dmp

Filesize
2.3MB

Download
memory/4424-0-0x0000000002340000-0x0000000002341000-memory.dmp

Filesize
4KB

Download
memory/4424-2-0x0000000004050000-0x0000000004199000-memory.dmp

Filesize
1.3MB

Download
memory/4424-10-0x0000000000400000-0x00000000005EC000-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