stealc | 7234f92276988b82c07ff97ac5cc5e2b2bcfc313ed0c881a217ef2c9878f2eaf

General

Target
7234f92276988b82c07ff97ac5cc5e2b2bcfc313ed0c881a217ef2c9878f2eaf.exe
Size 425KB
Sample240627-2xdprsyfpn
SHA256 7234f92276988b82c07ff97ac5cc5e2b2bcfc313ed0c881a217ef2c9878f2eaf
MD5 fe77f68d75713af1c66ab1e98ab76c07
SHA1 8dd48cbc8174edb6884862b35673b84cc10bbe6f
SHA512 73667ca9fea3a2249520fe92e1caa3be940aa82eeb37a40790dea9b665a55ddd1b6d62594a08fa89462db38488d9737cd021fa5ec8f2a2d2e92a6bb1c9b61fb2
SSDEEP 6144:LA4n+cZIJNpjHICzqu7MJruQPZLhXCdMw8xCNSGlsYiVkZ0ipooqgz9:LnZeNp7sSQxAGw8xCNXbqq9
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

stealc vidar 673ad4d1558c47b58d4f59c1d86488e2 discovery spyware stealer

Malware Config

Extracted

Family

stealc

rc4.plain

Extracted

Family

vidar

Version

10.1

Botnet

673ad4d1558c47b58d4f59c1d86488e2

C2

https://t.me/memve4erin
https://steamcommunity.com/profiles/76561199699680841

Attributes

user_agent
Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:129.0) Gecko/20100101 Firefox/129.0

Signatures

Detect Vidar Stealer 9 IoCs

stealer

resource	yara_rule
behavioral2/memory/3128-1-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral2/memory/3128-3-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral2/memory/3128-5-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral2/memory/3128-12-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral2/memory/3128-13-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral2/memory/3128-26-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral2/memory/3128-34-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral2/memory/3128-42-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral2/memory/3128-43-0x0000000000400000-0x0000000000648000-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 local email clients 2 TTPs
Email clients store some user data on disk where infostealers will often target it.
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 4588 set thread context of 3128	4588	7234f92276988b82c07ff97ac5cc5e2b2bcfc313ed0c881a217ef2c9878f2eaf.exe	74

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

System Information Discovery
T1082

Program crash 1 IoCs

pid	pid_target	Process	procid_target
1156	4588	WerFault.exe	72

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
1516	timeout.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
3128	RegAsm.exe
3128	RegAsm.exe
3128	RegAsm.exe
3128	RegAsm.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 4588 wrote to memory of 3128	4588	7234f92276988b82c07ff97ac5cc5e2b2bcfc313ed0c881a217ef2c9878f2eaf.exe	74
PID 4588 wrote to memory of 3128	4588	7234f92276988b82c07ff97ac5cc5e2b2bcfc313ed0c881a217ef2c9878f2eaf.exe	74
PID 4588 wrote to memory of 3128	4588	7234f92276988b82c07ff97ac5cc5e2b2bcfc313ed0c881a217ef2c9878f2eaf.exe	74
PID 4588 wrote to memory of 3128	4588	7234f92276988b82c07ff97ac5cc5e2b2bcfc313ed0c881a217ef2c9878f2eaf.exe	74
PID 4588 wrote to memory of 3128	4588	7234f92276988b82c07ff97ac5cc5e2b2bcfc313ed0c881a217ef2c9878f2eaf.exe	74
PID 4588 wrote to memory of 3128	4588	7234f92276988b82c07ff97ac5cc5e2b2bcfc313ed0c881a217ef2c9878f2eaf.exe	74
PID 4588 wrote to memory of 3128	4588	7234f92276988b82c07ff97ac5cc5e2b2bcfc313ed0c881a217ef2c9878f2eaf.exe	74
PID 4588 wrote to memory of 3128	4588	7234f92276988b82c07ff97ac5cc5e2b2bcfc313ed0c881a217ef2c9878f2eaf.exe	74
PID 4588 wrote to memory of 3128	4588	7234f92276988b82c07ff97ac5cc5e2b2bcfc313ed0c881a217ef2c9878f2eaf.exe	74
PID 3128 wrote to memory of 2248	3128	RegAsm.exe	78
PID 3128 wrote to memory of 2248	3128	RegAsm.exe	78
PID 3128 wrote to memory of 2248	3128	RegAsm.exe	78
PID 2248 wrote to memory of 1516	2248	cmd.exe	80
PID 2248 wrote to memory of 1516	2248	cmd.exe	80
PID 2248 wrote to memory of 1516	2248	cmd.exe	80

C:\Users\Admin\AppData\Local\Temp\7234f92276988b82c07ff97ac5cc5e2b2bcfc313ed0c881a217ef2c9878f2eaf.exe
"C:\Users\Admin\AppData\Local\Temp\7234f92276988b82c07ff97ac5cc5e2b2bcfc313ed0c881a217ef2c9878f2eaf.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4588
- 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:3128
- - C:\Windows\SysWOW64\cmd.exe
    "C:\Windows\System32\cmd.exe" /c timeout /t 10 & rd /s /q "C:\ProgramData\GDHIIIIEHCFI" & exit
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:2248
  - - C:\Windows\SysWOW64\timeout.exe
      timeout /t 10
      4⤵
      Delays execution with timeout.exe
      PID:1516
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4588 -s 288
  2⤵
  - Program crash
  PID:1156

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Unsecured Credentials

4

T1552

Credentials In Files

4

T1552.001

Discovery

Query Registry

2

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Data from Local System

4

T1005

Command and Control

Exfiltration

Impact

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Downloads

memory/3128-1-0x0000000000400000-0x0000000000648000-memory.dmp

Download

memory/3128-3-0x0000000000400000-0x0000000000648000-memory.dmp

Download

memory/3128-5-0x0000000000400000-0x0000000000648000-memory.dmp

Download

memory/3128-12-0x0000000000400000-0x0000000000648000-memory.dmp

Download

memory/3128-13-0x0000000000400000-0x0000000000648000-memory.dmp

Download

memory/3128-15-0x0000000019340000-0x000000001959F000-memory.dmp

Download

memory/3128-26-0x0000000000400000-0x0000000000648000-memory.dmp

Download

memory/3128-34-0x0000000000400000-0x0000000000648000-memory.dmp

Download

memory/3128-42-0x0000000000400000-0x0000000000648000-memory.dmp

Download

memory/3128-43-0x0000000000400000-0x0000000000648000-memory.dmp

Download

memory/4588-0-0x0000000000230000-0x0000000000231000-memory.dmp

Download

memory/4588-11-0x0000000000230000-0x0000000000231000-memory.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads