stealc | 7228fcec0d053ae3cdc9aacc192c2dccf3c159211a44eb390608c586f013c65c

Analysis

max time kernel
94s
max time network
97s
platform
windows10-2004_x64
resource
win10v2004-20240704-en
resource tags

arch:x64arch:x86image:win10v2004-20240704-enlocale:en-usos:windows10-2004-x64system
submitted
08/07/2024, 12:46

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General

Target

file.exe
Size

4.0MB
MD5

3d8c6425d1a2106f055331464e86c44c
SHA1

5d511d67ab61ee5e3d57c05846979f2a4d4ae2dd
SHA256

7228fcec0d053ae3cdc9aacc192c2dccf3c159211a44eb390608c586f013c65c
SHA512

95b15bea9bb0ae90c90fe6659666bbcf59f2cb17fbf9de7ca348eb0f54706a839cf882c6de365ac45e0861f7677d1b79d88439e7c5f90359c6830828f8ae5fe6
SSDEEP

98304:ed0I3rg8oRURlZ3uxd+lBb0v681D5/NP:ed0I3rgfkL35/k683/9

Score

10^/10

stealc vidar spyware stealer

Malware Config

Extracted

Family

vidar

https://t.me/bu77un

https://steamcommunity.com/profiles/76561199730044335

Attributes

user_agent
Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:128.1) Gecko/20100101 Firefox/128.1

Signatures

Detect Vidar Stealer 5 IoCs

stealer

resource	yara_rule
behavioral2/memory/2564-69-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral2/memory/2564-67-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral2/memory/2564-72-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral2/memory/2564-82-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral2/memory/2564-131-0x0000000000400000-0x0000000000648000-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
Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
spyware

Data from Local System
T1005

Credentials In Files
T1552.001

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 896 set thread context of 2564	896	file.exe	85

Checks processor information in registry 2 TTPs 2 IoCs

Processor information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	MSBuild.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	MSBuild.exe

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
1208	timeout.exe

Suspicious behavior: EnumeratesProcesses 8 IoCs

pid	Process
2564	MSBuild.exe
2564	MSBuild.exe
2564	MSBuild.exe
2564	MSBuild.exe
2564	MSBuild.exe
2564	MSBuild.exe
2564	MSBuild.exe
2564	MSBuild.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	896	file.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 896 wrote to memory of 2564	896	file.exe	85
PID 896 wrote to memory of 2564	896	file.exe	85
PID 896 wrote to memory of 2564	896	file.exe	85
PID 896 wrote to memory of 2564	896	file.exe	85
PID 896 wrote to memory of 2564	896	file.exe	85
PID 896 wrote to memory of 2564	896	file.exe	85
PID 896 wrote to memory of 2564	896	file.exe	85
PID 896 wrote to memory of 2564	896	file.exe	85
PID 896 wrote to memory of 2564	896	file.exe	85
PID 2564 wrote to memory of 2120	2564	MSBuild.exe	87
PID 2564 wrote to memory of 2120	2564	MSBuild.exe	87
PID 2564 wrote to memory of 2120	2564	MSBuild.exe	87
PID 2120 wrote to memory of 1208	2120	cmd.exe	89
PID 2120 wrote to memory of 1208	2120	cmd.exe	89
PID 2120 wrote to memory of 1208	2120	cmd.exe	89

C:\Users\Admin\AppData\Local\Temp\file.exe
"C:\Users\Admin\AppData\Local\Temp\file.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:896
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe"
  2⤵
  - Checks processor information in registry
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:2564
- - C:\Windows\SysWOW64\cmd.exe
    "C:\Windows\system32\cmd.exe" /c timeout /t 10 & rd /s /q "C:\ProgramData\CFIIIJJKJKFH" & exit
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:2120
  - - C:\Windows\SysWOW64\timeout.exe
      timeout /t 10
      4⤵
      Delays execution with timeout.exe
      PID:1208

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/896-46-0x00000000050A0000-0x00000000050B5000-memory.dmp

Filesize
84KB

Download
memory/896-1-0x0000000000280000-0x000000000067E000-memory.dmp

Filesize
4.0MB

Download
memory/896-2-0x0000000005120000-0x00000000051BC000-memory.dmp

Filesize
624KB

Download
memory/896-4-0x00000000052C0000-0x0000000005464000-memory.dmp

Filesize
1.6MB

Download
memory/896-3-0x0000000074F60000-0x0000000075710000-memory.dmp

Filesize
7.7MB

Download
memory/896-5-0x0000000005460000-0x00000000055B8000-memory.dmp

Filesize
1.3MB

Download
memory/896-6-0x00000000050A0000-0x00000000050BC000-memory.dmp

Filesize
112KB

Download
memory/896-11-0x00000000050A0000-0x00000000050B5000-memory.dmp

Filesize
84KB

Download
memory/896-8-0x00000000050A0000-0x00000000050B5000-memory.dmp

Filesize
84KB

Download
memory/896-59-0x00000000050A0000-0x00000000050B5000-memory.dmp

Filesize
84KB

Download
memory/896-66-0x00000000050A0000-0x00000000050B5000-memory.dmp

Filesize
84KB

Download
memory/896-65-0x00000000050A0000-0x00000000050B5000-memory.dmp

Filesize
84KB

Download
memory/896-7-0x00000000050A0000-0x00000000050B5000-memory.dmp

Filesize
84KB

Download
memory/896-71-0x0000000074F60000-0x0000000075710000-memory.dmp

Filesize
7.7MB

Download
memory/896-12-0x00000000050A0000-0x00000000050B5000-memory.dmp

Filesize
84KB

Download
memory/896-62-0x00000000050A0000-0x00000000050B5000-memory.dmp

Filesize
84KB

Download
memory/896-60-0x00000000050A0000-0x00000000050B5000-memory.dmp

Filesize
84KB

Download
memory/896-56-0x00000000050A0000-0x00000000050B5000-memory.dmp

Filesize
84KB

Download
memory/896-54-0x00000000050A0000-0x00000000050B5000-memory.dmp

Filesize
84KB

Download
memory/896-53-0x00000000050A0000-0x00000000050B5000-memory.dmp

Filesize
84KB

Download
memory/896-0-0x0000000074F6E000-0x0000000074F6F000-memory.dmp

Filesize
4KB

Download
memory/896-50-0x00000000050A0000-0x00000000050B5000-memory.dmp

Filesize
84KB

Download
memory/896-48-0x00000000050A0000-0x00000000050B5000-memory.dmp

Filesize
84KB

Download
memory/896-44-0x00000000050A0000-0x00000000050B5000-memory.dmp

Filesize
84KB

Download
memory/896-42-0x00000000050A0000-0x00000000050B5000-memory.dmp

Filesize
84KB

Download
memory/896-40-0x00000000050A0000-0x00000000050B5000-memory.dmp

Filesize
84KB

Download
memory/896-38-0x00000000050A0000-0x00000000050B5000-memory.dmp

Filesize
84KB

Download
memory/896-37-0x00000000050A0000-0x00000000050B5000-memory.dmp

Filesize
84KB

Download
memory/896-34-0x00000000050A0000-0x00000000050B5000-memory.dmp

Filesize
84KB

Download
memory/896-32-0x00000000050A0000-0x00000000050B5000-memory.dmp

Filesize
84KB

Download
memory/896-30-0x00000000050A0000-0x00000000050B5000-memory.dmp

Filesize
84KB

Download
memory/896-28-0x00000000050A0000-0x00000000050B5000-memory.dmp

Filesize
84KB

Download
memory/896-26-0x00000000050A0000-0x00000000050B5000-memory.dmp

Filesize
84KB

Download
memory/896-24-0x00000000050A0000-0x00000000050B5000-memory.dmp

Filesize
84KB

Download
memory/896-22-0x00000000050A0000-0x00000000050B5000-memory.dmp

Filesize
84KB

Download
memory/896-20-0x00000000050A0000-0x00000000050B5000-memory.dmp

Filesize
84KB

Download
memory/896-18-0x00000000050A0000-0x00000000050B5000-memory.dmp

Filesize
84KB

Download
memory/896-16-0x00000000050A0000-0x00000000050B5000-memory.dmp

Filesize
84KB

Download
memory/896-14-0x00000000050A0000-0x00000000050B5000-memory.dmp

Filesize
84KB

Download
memory/2564-67-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/2564-69-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/2564-72-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/2564-82-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/2564-131-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download