stealc | 00c66edc8b41592e299f449a6b7a4e3ab949f7cca0c27bba9a279feacc6e5b6b

Analysis

max time kernel
147s
max time network
150s
platform
windows11-21h2_x64
resource
win11-20240802-en
resource tags

arch:x64arch:x86image:win11-20240802-enlocale:en-usos:windows11-21h2-x64system
submitted
09-09-2024 15:48

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General

Target

00c66edc8b41592e299f449a6b7a4e3ab949f7cca0c27bba9a279feacc6e5b6b.exe
Size

205KB
MD5

46a221059a8fae9bbbc96fdf1f794884
SHA1

8917f7e3f471c5eaa6fb8a026236fd229b4e3af3
SHA256

00c66edc8b41592e299f449a6b7a4e3ab949f7cca0c27bba9a279feacc6e5b6b
SHA512

b6914b29eebed8592c3c8974969b127ad07a0b147126d0656959ff9175a7da5e989a0cf2fdd4883c777aa98f8cae7382cc2247676526f975390693ee5342aa3b
SSDEEP

3072:nXYvri+tmY5sIFxuwQJXYG01XslEjKaflcpYVM6AjnJaYe53MDk2UKYzEO:nXYvu2mYAlal5lcpR6AjIKyEO

Score

10^/10

stealc vidar default credential_access discovery spyware stealer

Malware Config

Extracted

Family

stealc

Botnet

default

http://46.8.231.109

Attributes

url_path
/c4754d4f680ead72.php

Extracted

Family

vidar

https://t.me/fneogr

https://t.me/edm0d

https://steamcommunity.com/profiles/76561199768374681

Attributes

user_agent
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/124.0.0.0 Safari/537.36 OPR/110.0.0.0

Signatures

Detect Vidar Stealer 6 IoCs

stealer

resource	yara_rule
behavioral2/memory/2672-91-0x0000000000400000-0x0000000000657000-memory.dmp	family_vidar_v7
behavioral2/memory/2672-99-0x0000000000400000-0x0000000000657000-memory.dmp	family_vidar_v7
behavioral2/memory/2672-103-0x0000000000400000-0x0000000000657000-memory.dmp	family_vidar_v7
behavioral2/memory/2672-126-0x0000000000400000-0x0000000000657000-memory.dmp	family_vidar_v7
behavioral2/memory/2672-127-0x0000000000400000-0x0000000000657000-memory.dmp	family_vidar_v7
behavioral2/memory/2672-128-0x0000000000400000-0x0000000000657000-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
Credentials from Password Stores: Credentials from Web Browsers 1 TTPs
Malicious Access or copy of Web Browser Credential store.
credential_access stealer

Credentials from Web Browsers
T1555.003
Downloads MZ/PE file

Executes dropped EXE 2 IoCs

pid	Process
1892	AdminJJECGHJDBF.exe
2752	AdminJJKEBGHJKF.exe

Loads dropped DLL 2 IoCs

pid	Process
3860	RegAsm.exe
3860	RegAsm.exe

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
Unsecured Credentials: Credentials In Files 1 TTPs
Steal credentials from unsecured files.
credential_access stealer

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 3 IoCs

description	pid	Process	procid_target
PID 1704 set thread context of 3860	1704	00c66edc8b41592e299f449a6b7a4e3ab949f7cca0c27bba9a279feacc6e5b6b.exe	81
PID 1892 set thread context of 2672	1892	AdminJJECGHJDBF.exe	90
PID 2752 set thread context of 1456	2752	AdminJJKEBGHJKF.exe	95

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

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 8 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	AdminJJKEBGHJKF.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	RegAsm.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	00c66edc8b41592e299f449a6b7a4e3ab949f7cca0c27bba9a279feacc6e5b6b.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	RegAsm.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	AdminJJECGHJDBF.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	RegAsm.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Checks processor information in registry 2 TTPs 4 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
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	RegAsm.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	RegAsm.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	RegAsm.exe

Suspicious behavior: EnumeratesProcesses 8 IoCs

pid	Process
3860	RegAsm.exe
3860	RegAsm.exe
3860	RegAsm.exe
3860	RegAsm.exe
2672	RegAsm.exe
2672	RegAsm.exe
2672	RegAsm.exe
2672	RegAsm.exe

Suspicious use of WriteProcessMemory 49 IoCs

description	pid	Process	procid_target
PID 1704 wrote to memory of 3860	1704	00c66edc8b41592e299f449a6b7a4e3ab949f7cca0c27bba9a279feacc6e5b6b.exe	81
PID 1704 wrote to memory of 3860	1704	00c66edc8b41592e299f449a6b7a4e3ab949f7cca0c27bba9a279feacc6e5b6b.exe	81
PID 1704 wrote to memory of 3860	1704	00c66edc8b41592e299f449a6b7a4e3ab949f7cca0c27bba9a279feacc6e5b6b.exe	81
PID 1704 wrote to memory of 3860	1704	00c66edc8b41592e299f449a6b7a4e3ab949f7cca0c27bba9a279feacc6e5b6b.exe	81
PID 1704 wrote to memory of 3860	1704	00c66edc8b41592e299f449a6b7a4e3ab949f7cca0c27bba9a279feacc6e5b6b.exe	81
PID 1704 wrote to memory of 3860	1704	00c66edc8b41592e299f449a6b7a4e3ab949f7cca0c27bba9a279feacc6e5b6b.exe	81
PID 1704 wrote to memory of 3860	1704	00c66edc8b41592e299f449a6b7a4e3ab949f7cca0c27bba9a279feacc6e5b6b.exe	81
PID 1704 wrote to memory of 3860	1704	00c66edc8b41592e299f449a6b7a4e3ab949f7cca0c27bba9a279feacc6e5b6b.exe	81
PID 1704 wrote to memory of 3860	1704	00c66edc8b41592e299f449a6b7a4e3ab949f7cca0c27bba9a279feacc6e5b6b.exe	81
PID 3860 wrote to memory of 504	3860	RegAsm.exe	83
PID 3860 wrote to memory of 504	3860	RegAsm.exe	83
PID 3860 wrote to memory of 504	3860	RegAsm.exe	83
PID 504 wrote to memory of 1892	504	cmd.exe	85
PID 504 wrote to memory of 1892	504	cmd.exe	85
PID 504 wrote to memory of 1892	504	cmd.exe	85
PID 1892 wrote to memory of 4604	1892	AdminJJECGHJDBF.exe	87
PID 1892 wrote to memory of 4604	1892	AdminJJECGHJDBF.exe	87
PID 1892 wrote to memory of 4604	1892	AdminJJECGHJDBF.exe	87
PID 1892 wrote to memory of 2680	1892	AdminJJECGHJDBF.exe	88
PID 1892 wrote to memory of 2680	1892	AdminJJECGHJDBF.exe	88
PID 1892 wrote to memory of 2680	1892	AdminJJECGHJDBF.exe	88
PID 1892 wrote to memory of 3320	1892	AdminJJECGHJDBF.exe	89
PID 1892 wrote to memory of 3320	1892	AdminJJECGHJDBF.exe	89
PID 1892 wrote to memory of 3320	1892	AdminJJECGHJDBF.exe	89
PID 1892 wrote to memory of 2672	1892	AdminJJECGHJDBF.exe	90
PID 1892 wrote to memory of 2672	1892	AdminJJECGHJDBF.exe	90
PID 1892 wrote to memory of 2672	1892	AdminJJECGHJDBF.exe	90
PID 1892 wrote to memory of 2672	1892	AdminJJECGHJDBF.exe	90
PID 1892 wrote to memory of 2672	1892	AdminJJECGHJDBF.exe	90
PID 1892 wrote to memory of 2672	1892	AdminJJECGHJDBF.exe	90
PID 1892 wrote to memory of 2672	1892	AdminJJECGHJDBF.exe	90
PID 1892 wrote to memory of 2672	1892	AdminJJECGHJDBF.exe	90
PID 1892 wrote to memory of 2672	1892	AdminJJECGHJDBF.exe	90
PID 1892 wrote to memory of 2672	1892	AdminJJECGHJDBF.exe	90
PID 3860 wrote to memory of 2872	3860	RegAsm.exe	91
PID 3860 wrote to memory of 2872	3860	RegAsm.exe	91
PID 3860 wrote to memory of 2872	3860	RegAsm.exe	91
PID 2872 wrote to memory of 2752	2872	cmd.exe	93
PID 2872 wrote to memory of 2752	2872	cmd.exe	93
PID 2872 wrote to memory of 2752	2872	cmd.exe	93
PID 2752 wrote to memory of 1456	2752	AdminJJKEBGHJKF.exe	95
PID 2752 wrote to memory of 1456	2752	AdminJJKEBGHJKF.exe	95
PID 2752 wrote to memory of 1456	2752	AdminJJKEBGHJKF.exe	95
PID 2752 wrote to memory of 1456	2752	AdminJJKEBGHJKF.exe	95
PID 2752 wrote to memory of 1456	2752	AdminJJKEBGHJKF.exe	95
PID 2752 wrote to memory of 1456	2752	AdminJJKEBGHJKF.exe	95
PID 2752 wrote to memory of 1456	2752	AdminJJKEBGHJKF.exe	95
PID 2752 wrote to memory of 1456	2752	AdminJJKEBGHJKF.exe	95
PID 2752 wrote to memory of 1456	2752	AdminJJKEBGHJKF.exe	95

C:\Users\Admin\AppData\Local\Temp\00c66edc8b41592e299f449a6b7a4e3ab949f7cca0c27bba9a279feacc6e5b6b.exe
"C:\Users\Admin\AppData\Local\Temp\00c66edc8b41592e299f449a6b7a4e3ab949f7cca0c27bba9a279feacc6e5b6b.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1704
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
  2⤵
  - Loads dropped DLL
  - System Location Discovery: System Language Discovery
  - Checks processor information in registry
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:3860
- - C:\Windows\SysWOW64\cmd.exe
    "C:\Windows\system32\cmd.exe" /c start "" "C:\Users\AdminJJECGHJDBF.exe"
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:504
  - - C:\Users\AdminJJECGHJDBF.exe
      "C:\Users\AdminJJECGHJDBF.exe"
      4⤵
      Executes dropped EXE
      Suspicious use of SetThreadContext
      System Location Discovery: System Language Discovery
      Suspicious use of WriteProcessMemory
      PID:1892
    - - C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
        
        "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
        5⤵
        
        PID:4604
    - - C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
        
        "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
        5⤵
        
        PID:2680
    - - C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
        
        "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
        5⤵
        
        PID:3320
    - - C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
        
        "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
        5⤵
        System Location Discovery: System Language Discovery
        Checks processor information in registry
        Suspicious behavior: EnumeratesProcesses
        
        PID:2672
- - C:\Windows\SysWOW64\cmd.exe
    "C:\Windows\system32\cmd.exe" /c start "" "C:\Users\AdminJJKEBGHJKF.exe"
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:2872
  - - C:\Users\AdminJJKEBGHJKF.exe
      "C:\Users\AdminJJKEBGHJKF.exe"
      4⤵
      Executes dropped EXE
      Suspicious use of SetThreadContext
      System Location Discovery: System Language Discovery
      Suspicious use of WriteProcessMemory
      PID:2752
    - - C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
        
        "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
        5⤵
        System Location Discovery: System Language Discovery
        
        PID:1456

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Credentials from Password Stores

T1555

Credentials from Web Browsers

T1555.003

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Discovery

Query Registry

T1012

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\ProgramData\mozglue.dll

Filesize
593KB

MD5
c8fd9be83bc728cc04beffafc2907fe9

SHA1
95ab9f701e0024cedfbd312bcfe4e726744c4f2e

SHA256
ba06a6ee0b15f5be5c4e67782eec8b521e36c107a329093ec400fe0404eb196a

SHA512
fbb446f4a27ef510e616caad52945d6c9cc1fd063812c41947e579ec2b54df57c6dc46237ded80fca5847f38cbe1747a6c66a13e2c8c19c664a72be35eb8b040

Download Submit
C:\ProgramData\nss3.dll

Filesize
2.0MB

MD5
1cc453cdf74f31e4d913ff9c10acdde2

SHA1
6e85eae544d6e965f15fa5c39700fa7202f3aafe

SHA256
ac5c92fe6c51cfa742e475215b83b3e11a4379820043263bf50d4068686c6fa5

SHA512
dd9ff4e06b00dc831439bab11c10e9b2ae864ea6e780d3835ea7468818f35439f352ef137da111efcdf2bb6465f6ca486719451bf6cf32c6a4420a56b1d64571

Download Submit
C:\Users\AdminJJECGHJDBF.exe

Filesize
283KB

MD5
84354d3c9965d9a0878596e347a34f39

SHA1
f8e6d9f00d72f6f023e8d793462b7bb90cc31583

SHA256
4e20a0aa3d323c0a1aa676c7eb3656cdd34cb69da614b4dc8aa946f5bcb2be39

SHA512
2356ba4867985b609e1727f2a4877649f6c1b415d089dcef22c695baa42d3051cb6fb799eb7056ca75301a1aba47e71354e5051868f5bda04a62932a3ef72ad3

Download Submit
C:\Users\AdminJJKEBGHJKF.exe

Filesize
321KB

MD5
e318c6ab13d30b93d2d43bf5d2c31fe5

SHA1
2096056b203ea938312af04ce137353eac6a03d3

SHA256
f43e034a2bee82ed71caf1f838be515abef3bd8bb562bdae3d5abb4f194c492d

SHA512
bc0bfbdf77a6da47f67201f6a1f049072ff0bb1c289eccc739c07b49c4eafe3b9053d31671f08ffdb833ee469dfcab95374ed199267fab86f38e9db7d7fbce75

Download Submit
memory/1456-113-0x0000000000400000-0x0000000000458000-memory.dmp

Filesize
352KB

Download
memory/1456-109-0x0000000000400000-0x0000000000458000-memory.dmp

Filesize
352KB

Download
memory/1456-111-0x0000000000400000-0x0000000000458000-memory.dmp

Filesize
352KB

Download
memory/1704-7-0x0000000074CB0000-0x0000000075461000-memory.dmp

Filesize
7.7MB

Download
memory/1704-9-0x0000000074CB0000-0x0000000075461000-memory.dmp

Filesize
7.7MB

Download
memory/1704-1-0x0000000000750000-0x0000000000788000-memory.dmp

Filesize
224KB

Download
memory/1704-0-0x0000000074CBE000-0x0000000074CBF000-memory.dmp

Filesize
4KB

Download
memory/1892-94-0x0000000072290000-0x0000000072A41000-memory.dmp

Filesize
7.7MB

Download
memory/1892-93-0x0000000072290000-0x0000000072A41000-memory.dmp

Filesize
7.7MB

Download
memory/1892-88-0x000000007229E000-0x000000007229F000-memory.dmp

Filesize
4KB

Download
memory/1892-89-0x0000000000AB0000-0x0000000000AFA000-memory.dmp

Filesize
296KB

Download
memory/2672-91-0x0000000000400000-0x0000000000657000-memory.dmp

Filesize
2.3MB

Download
memory/2672-99-0x0000000000400000-0x0000000000657000-memory.dmp

Filesize
2.3MB

Download
memory/2672-103-0x0000000000400000-0x0000000000657000-memory.dmp

Filesize
2.3MB

Download
memory/2672-126-0x0000000000400000-0x0000000000657000-memory.dmp

Filesize
2.3MB

Download
memory/2672-127-0x0000000000400000-0x0000000000657000-memory.dmp

Filesize
2.3MB

Download
memory/2672-128-0x0000000000400000-0x0000000000657000-memory.dmp

Filesize
2.3MB

Download
memory/2752-107-0x0000000000CA0000-0x0000000000CF4000-memory.dmp

Filesize
336KB

Download
memory/3860-11-0x0000000061E00000-0x0000000061EF3000-memory.dmp

Filesize
972KB

Download
memory/3860-10-0x0000000000400000-0x0000000000643000-memory.dmp

Filesize
2.3MB

Download
memory/3860-8-0x0000000000400000-0x0000000000643000-memory.dmp

Filesize
2.3MB

Download
memory/3860-5-0x0000000000400000-0x0000000000643000-memory.dmp

Filesize
2.3MB

Download
memory/3860-6-0x0000000000400000-0x0000000000643000-memory.dmp

Filesize
2.3MB

Download
memory/3860-114-0x0000000000400000-0x0000000000643000-memory.dmp

Filesize
2.3MB

Download