stealc | 220fe23a30228c363d816fb619345ab1ce40dd67541ec6b17083a45c67cc4a9b

General

Target

220fe23a30228c363d816fb619345ab1ce40dd67541ec6b17083a45c67cc4a9b.exe
Size

421KB
MD5

0af645b0d5ba2f665c227545523fb8f6
SHA1

6b59ed2186e1554bccba0e3c3b9f517cfdaefe0a
SHA256

220fe23a30228c363d816fb619345ab1ce40dd67541ec6b17083a45c67cc4a9b
SHA512

605fae3c8eb499b2d903e0c2c539de7ef2d645486f15229ba8cd9e4c84d7680e43a7ba9c4ed264cf96cd77948dba136e223c320de88ebdade39c8410b8a6aa14
SSDEEP

12288:EwOa1fvniVvr7G6JMOCyHPocXX4brLRgx3rSDLC:EwOUniVzK6JMOxHPocn+cbSDG

Score

10^/10

stealc vidar discovery spyware stealer

Malware Config

Extracted

Family

stealc

rc4.plain

Extracted

Family

vidar

C2

https://t.me/r8z0l

https://steamcommunity.com/profiles/76561199698764354

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 9 IoCs

stealer

resource	yara_rule
behavioral2/memory/4660-2-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral2/memory/4660-7-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral2/memory/4660-5-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral2/memory/4660-13-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral2/memory/4660-14-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral2/memory/4660-31-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral2/memory/4660-32-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral2/memory/4660-44-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral2/memory/4660-45-0x0000000000400000-0x0000000000648000-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
Reads data files stored by FTP clients 2 TTPs
Tries to access configuration files associated with programs like FileZilla.
spyware stealer

Data from Local System
T1005

Credentials In Files
T1552.001
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
Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
spyware

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 4184 set thread context of 4660	4184	220fe23a30228c363d816fb619345ab1ce40dd67541ec6b17083a45c67cc4a9b.exe	72

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

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	RegAsm.exe

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
4276	timeout.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
4660	RegAsm.exe
4660	RegAsm.exe
4660	RegAsm.exe
4660	RegAsm.exe
4660	RegAsm.exe
4660	RegAsm.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 4184 wrote to memory of 4660	4184	220fe23a30228c363d816fb619345ab1ce40dd67541ec6b17083a45c67cc4a9b.exe	72
PID 4184 wrote to memory of 4660	4184	220fe23a30228c363d816fb619345ab1ce40dd67541ec6b17083a45c67cc4a9b.exe	72
PID 4184 wrote to memory of 4660	4184	220fe23a30228c363d816fb619345ab1ce40dd67541ec6b17083a45c67cc4a9b.exe	72
PID 4184 wrote to memory of 4660	4184	220fe23a30228c363d816fb619345ab1ce40dd67541ec6b17083a45c67cc4a9b.exe	72
PID 4184 wrote to memory of 4660	4184	220fe23a30228c363d816fb619345ab1ce40dd67541ec6b17083a45c67cc4a9b.exe	72
PID 4184 wrote to memory of 4660	4184	220fe23a30228c363d816fb619345ab1ce40dd67541ec6b17083a45c67cc4a9b.exe	72
PID 4184 wrote to memory of 4660	4184	220fe23a30228c363d816fb619345ab1ce40dd67541ec6b17083a45c67cc4a9b.exe	72
PID 4184 wrote to memory of 4660	4184	220fe23a30228c363d816fb619345ab1ce40dd67541ec6b17083a45c67cc4a9b.exe	72
PID 4184 wrote to memory of 4660	4184	220fe23a30228c363d816fb619345ab1ce40dd67541ec6b17083a45c67cc4a9b.exe	72
PID 4660 wrote to memory of 3324	4660	RegAsm.exe	74
PID 4660 wrote to memory of 3324	4660	RegAsm.exe	74
PID 4660 wrote to memory of 3324	4660	RegAsm.exe	74
PID 3324 wrote to memory of 4276	3324	cmd.exe	76
PID 3324 wrote to memory of 4276	3324	cmd.exe	76
PID 3324 wrote to memory of 4276	3324	cmd.exe	76

C:\Users\Admin\AppData\Local\Temp\220fe23a30228c363d816fb619345ab1ce40dd67541ec6b17083a45c67cc4a9b.exe
"C:\Users\Admin\AppData\Local\Temp\220fe23a30228c363d816fb619345ab1ce40dd67541ec6b17083a45c67cc4a9b.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4184
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
  2⤵
  - Checks processor information in registry
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:4660
- - C:\Windows\SysWOW64\cmd.exe
    "C:\Windows\System32\cmd.exe" /c timeout /t 10 & rd /s /q "C:\ProgramData\KKJJEBFCGDAK" & exit
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:3324
  - - C:\Windows\SysWOW64\timeout.exe
      timeout /t 10
      4⤵
      Delays execution with timeout.exe
      PID:4276

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Unsecured Credentials

3

T1552

Credentials In Files

3

T1552.001

Discovery

Query Registry

2

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Data from Local System

3

T1005

Command and Control

Exfiltration

Impact

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Downloads

memory/4184-0-0x0000000000850000-0x0000000000851000-memory.dmp

Filesize
4KB

Download
memory/4184-1-0x0000000000850000-0x0000000000851000-memory.dmp

Filesize
4KB

Download
memory/4184-3-0x0000000000850000-0x0000000000851000-memory.dmp

Filesize
4KB

Download
memory/4660-2-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/4660-7-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/4660-5-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/4660-13-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/4660-14-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/4660-16-0x0000000018F80000-0x00000000191DF000-memory.dmp

Filesize
2.4MB

Download
memory/4660-31-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/4660-32-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/4660-44-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/4660-45-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download

Resubmissions

Analysis

Sharing

General

Malware Config

Extracted

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads