stealc | 56ad460c63c005e8049142132ffa08c7c30f2fe9dbd24c60ff746c2e61138495

General

Target
56ad460c63c005e8049142132ffa08c7c30f2fe9dbd24c60ff746c2e61138495.exe
Size 467KB
Sample240613-2v69astfpc
SHA256 56ad460c63c005e8049142132ffa08c7c30f2fe9dbd24c60ff746c2e61138495
MD5 d74e5939e3ad989ab0187c1127f9db3a
SHA1 a2e3697f89cc1c31b4d342dfaddb738f28d420fb
SHA512 47824d39685d4b583099bc907881d30736f3a39b7636baf20dab9d480026f87d0b54031fff6ac369bb053f65cfd1f95e83a5a5d0eed84f82c4b1a440f7d6d218
SSDEEP 12288:4w5ZLCWvqJQL9+l9RBG/w/SWFM57OWCd:4w5Z5qJQLwlvOIP0OW
MD5 SHA1 SHA512 SSDEEP

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/4796-2-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral2/memory/4796-5-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral2/memory/4796-7-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral2/memory/4796-13-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral2/memory/4796-14-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral2/memory/4796-27-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral2/memory/4796-28-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral2/memory/4796-43-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral2/memory/4796-44-0x0000000000400000-0x0000000000648000-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 3936 set thread context of 4796	3936	56ad460c63c005e8049142132ffa08c7c30f2fe9dbd24c60ff746c2e61138495.exe	74

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
596	timeout.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
4796	RegAsm.exe
4796	RegAsm.exe
4796	RegAsm.exe
4796	RegAsm.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 3936 wrote to memory of 4796	3936	56ad460c63c005e8049142132ffa08c7c30f2fe9dbd24c60ff746c2e61138495.exe	74
PID 3936 wrote to memory of 4796	3936	56ad460c63c005e8049142132ffa08c7c30f2fe9dbd24c60ff746c2e61138495.exe	74
PID 3936 wrote to memory of 4796	3936	56ad460c63c005e8049142132ffa08c7c30f2fe9dbd24c60ff746c2e61138495.exe	74
PID 3936 wrote to memory of 4796	3936	56ad460c63c005e8049142132ffa08c7c30f2fe9dbd24c60ff746c2e61138495.exe	74
PID 3936 wrote to memory of 4796	3936	56ad460c63c005e8049142132ffa08c7c30f2fe9dbd24c60ff746c2e61138495.exe	74
PID 3936 wrote to memory of 4796	3936	56ad460c63c005e8049142132ffa08c7c30f2fe9dbd24c60ff746c2e61138495.exe	74
PID 3936 wrote to memory of 4796	3936	56ad460c63c005e8049142132ffa08c7c30f2fe9dbd24c60ff746c2e61138495.exe	74
PID 3936 wrote to memory of 4796	3936	56ad460c63c005e8049142132ffa08c7c30f2fe9dbd24c60ff746c2e61138495.exe	74
PID 3936 wrote to memory of 4796	3936	56ad460c63c005e8049142132ffa08c7c30f2fe9dbd24c60ff746c2e61138495.exe	74
PID 4796 wrote to memory of 4112	4796	RegAsm.exe	76
PID 4796 wrote to memory of 4112	4796	RegAsm.exe	76
PID 4796 wrote to memory of 4112	4796	RegAsm.exe	76
PID 4112 wrote to memory of 596	4112	cmd.exe	78
PID 4112 wrote to memory of 596	4112	cmd.exe	78
PID 4112 wrote to memory of 596	4112	cmd.exe	78

C:\Users\Admin\AppData\Local\Temp\56ad460c63c005e8049142132ffa08c7c30f2fe9dbd24c60ff746c2e61138495.exe
"C:\Users\Admin\AppData\Local\Temp\56ad460c63c005e8049142132ffa08c7c30f2fe9dbd24c60ff746c2e61138495.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:3936
- 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:4796
- - C:\Windows\SysWOW64\cmd.exe
    "C:\Windows\System32\cmd.exe" /c timeout /t 10 & rd /s /q "C:\ProgramData\BKEBFHIJECFI" & exit
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:4112
  - - C:\Windows\SysWOW64\timeout.exe
      timeout /t 10
      4⤵
      Delays execution with timeout.exe
      PID:596

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/3936-0-0x0000000001320000-0x0000000001321000-memory.dmp

Download

memory/3936-1-0x0000000001320000-0x0000000001321000-memory.dmp

Download

memory/3936-3-0x0000000001320000-0x0000000001321000-memory.dmp

Download

memory/4796-2-0x0000000000400000-0x0000000000648000-memory.dmp

Download

memory/4796-5-0x0000000000400000-0x0000000000648000-memory.dmp

Download

memory/4796-7-0x0000000000400000-0x0000000000648000-memory.dmp

Download

memory/4796-13-0x0000000000400000-0x0000000000648000-memory.dmp

Download

memory/4796-14-0x0000000000400000-0x0000000000648000-memory.dmp

Download

memory/4796-16-0x0000000019440000-0x000000001969F000-memory.dmp

Download

memory/4796-27-0x0000000000400000-0x0000000000648000-memory.dmp

Download

memory/4796-28-0x0000000000400000-0x0000000000648000-memory.dmp

Download

memory/4796-43-0x0000000000400000-0x0000000000648000-memory.dmp

Download

memory/4796-44-0x0000000000400000-0x0000000000648000-memory.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads