stealc | 50c0cbafc373b681cbfbf19308ba55fabf5b02c91884ffddcf27eb3fd67ec478

Analysis

max time kernel
120s
max time network
159s
platform
windows7_x64
resource
win7-20240708-en
resource tags

arch:x64arch:x86image:win7-20240708-enlocale:en-usos:windows7-x64system
submitted
11/07/2024, 22:34

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General

Target

50c0cbafc373b681cbfbf19308ba55fabf5b02c91884ffddcf27eb3fd67ec478.exe
Size

5.0MB
MD5

7888f9f71da2bfb52f5480c2721168f8
SHA1

955b213b2e4bd923720e1c942edc293111bf7c51
SHA256

50c0cbafc373b681cbfbf19308ba55fabf5b02c91884ffddcf27eb3fd67ec478
SHA512

1cc69d026a264f98a7314717da3a8d1ff8a44682cfc31dff70f21c8823c3ac7c10106207294818f1bd3f39894403473062c25acdd11596b0d1c3790a50208bd4
SSDEEP

98304:fMHIOnyxaYFQEYkcUSEj/5Yo40e2ewr2DJtyg:EHIOn+aYFQ87GKJyDyg

Score

10^/10

stealc vidar 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 3 IoCs

stealer

resource	yara_rule
behavioral1/memory/2984-77-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral1/memory/2984-127-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral1/memory/2984-132-0x0000000000400000-0x0000000000648000-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

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2356 set thread context of 2984	2356	50c0cbafc373b681cbfbf19308ba55fabf5b02c91884ffddcf27eb3fd67ec478.exe	30

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
900	timeout.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
2984	MSBuild.exe
2984	MSBuild.exe
2984	MSBuild.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2356	50c0cbafc373b681cbfbf19308ba55fabf5b02c91884ffddcf27eb3fd67ec478.exe

Suspicious use of WriteProcessMemory 18 IoCs

description	pid	Process	procid_target
PID 2356 wrote to memory of 2984	2356	50c0cbafc373b681cbfbf19308ba55fabf5b02c91884ffddcf27eb3fd67ec478.exe	30
PID 2356 wrote to memory of 2984	2356	50c0cbafc373b681cbfbf19308ba55fabf5b02c91884ffddcf27eb3fd67ec478.exe	30
PID 2356 wrote to memory of 2984	2356	50c0cbafc373b681cbfbf19308ba55fabf5b02c91884ffddcf27eb3fd67ec478.exe	30
PID 2356 wrote to memory of 2984	2356	50c0cbafc373b681cbfbf19308ba55fabf5b02c91884ffddcf27eb3fd67ec478.exe	30
PID 2356 wrote to memory of 2984	2356	50c0cbafc373b681cbfbf19308ba55fabf5b02c91884ffddcf27eb3fd67ec478.exe	30
PID 2356 wrote to memory of 2984	2356	50c0cbafc373b681cbfbf19308ba55fabf5b02c91884ffddcf27eb3fd67ec478.exe	30
PID 2356 wrote to memory of 2984	2356	50c0cbafc373b681cbfbf19308ba55fabf5b02c91884ffddcf27eb3fd67ec478.exe	30
PID 2356 wrote to memory of 2984	2356	50c0cbafc373b681cbfbf19308ba55fabf5b02c91884ffddcf27eb3fd67ec478.exe	30
PID 2356 wrote to memory of 2984	2356	50c0cbafc373b681cbfbf19308ba55fabf5b02c91884ffddcf27eb3fd67ec478.exe	30
PID 2356 wrote to memory of 2984	2356	50c0cbafc373b681cbfbf19308ba55fabf5b02c91884ffddcf27eb3fd67ec478.exe	30
PID 2984 wrote to memory of 2080	2984	MSBuild.exe	34
PID 2984 wrote to memory of 2080	2984	MSBuild.exe	34
PID 2984 wrote to memory of 2080	2984	MSBuild.exe	34
PID 2984 wrote to memory of 2080	2984	MSBuild.exe	34
PID 2080 wrote to memory of 900	2080	cmd.exe	36
PID 2080 wrote to memory of 900	2080	cmd.exe	36
PID 2080 wrote to memory of 900	2080	cmd.exe	36
PID 2080 wrote to memory of 900	2080	cmd.exe	36

C:\Users\Admin\AppData\Local\Temp\50c0cbafc373b681cbfbf19308ba55fabf5b02c91884ffddcf27eb3fd67ec478.exe
"C:\Users\Admin\AppData\Local\Temp\50c0cbafc373b681cbfbf19308ba55fabf5b02c91884ffddcf27eb3fd67ec478.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2356
- 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:2984
- - C:\Windows\SysWOW64\cmd.exe
    "C:\Windows\system32\cmd.exe" /c timeout /t 10 & del /f /q "C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe" & rd /s /q "C:\ProgramData\DGDHJEGIEBFH" & exit
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:2080
  - - C:\Windows\SysWOW64\timeout.exe
      timeout /t 10
      4⤵
      Delays execution with timeout.exe
      PID:900

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\CabBDD5.tmp

Filesize
70KB

MD5
49aebf8cbd62d92ac215b2923fb1b9f5

SHA1
1723be06719828dda65ad804298d0431f6aff976

SHA256
b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f

SHA512
bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b

Download Submit
C:\Users\Admin\AppData\Local\Temp\TarBDF7.tmp

Filesize
181KB

MD5
4ea6026cf93ec6338144661bf1202cd1

SHA1
a1dec9044f750ad887935a01430bf49322fbdcb7

SHA256
8efbc21559ef8b1bcf526800d8070baad42474ce7198e26fa771dbb41a76b1d8

SHA512
6c7e0980e39aacf4c3689802353f464a08cd17753bd210ee997e5f2a455deb4f287a9ef74d84579dbde49bc96213cd2b8b247723919c412ea980aa6e6bfe218b

Download Submit
memory/2356-38-0x00000000004A0000-0x00000000004B5000-memory.dmp

Filesize
84KB

Download
memory/2356-34-0x00000000004A0000-0x00000000004B5000-memory.dmp

Filesize
84KB

Download
memory/2356-4-0x00000000004A0000-0x00000000004BC000-memory.dmp

Filesize
112KB

Download
memory/2356-5-0x00000000004A0000-0x00000000004B5000-memory.dmp

Filesize
84KB

Download
memory/2356-6-0x00000000004A0000-0x00000000004B5000-memory.dmp

Filesize
84KB

Download
memory/2356-14-0x00000000004A0000-0x00000000004B5000-memory.dmp

Filesize
84KB

Download
memory/2356-24-0x00000000004A0000-0x00000000004B5000-memory.dmp

Filesize
84KB

Download
memory/2356-64-0x00000000004A0000-0x00000000004B5000-memory.dmp

Filesize
84KB

Download
memory/2356-62-0x00000000004A0000-0x00000000004B5000-memory.dmp

Filesize
84KB

Download
memory/2356-60-0x00000000004A0000-0x00000000004B5000-memory.dmp

Filesize
84KB

Download
memory/2356-58-0x00000000004A0000-0x00000000004B5000-memory.dmp

Filesize
84KB

Download
memory/2356-56-0x00000000004A0000-0x00000000004B5000-memory.dmp

Filesize
84KB

Download
memory/2356-54-0x00000000004A0000-0x00000000004B5000-memory.dmp

Filesize
84KB

Download
memory/2356-52-0x00000000004A0000-0x00000000004B5000-memory.dmp

Filesize
84KB

Download
memory/2356-50-0x00000000004A0000-0x00000000004B5000-memory.dmp

Filesize
84KB

Download
memory/2356-48-0x00000000004A0000-0x00000000004B5000-memory.dmp

Filesize
84KB

Download
memory/2356-46-0x00000000004A0000-0x00000000004B5000-memory.dmp

Filesize
84KB

Download
memory/2356-36-0x00000000004A0000-0x00000000004B5000-memory.dmp

Filesize
84KB

Download
memory/2356-43-0x00000000004A0000-0x00000000004B5000-memory.dmp

Filesize
84KB

Download
memory/2356-40-0x00000000004A0000-0x00000000004B5000-memory.dmp

Filesize
84KB

Download
memory/2356-3-0x0000000074A00000-0x00000000750EE000-memory.dmp

Filesize
6.9MB

Download
memory/2356-0-0x0000000074A0E000-0x0000000074A0F000-memory.dmp

Filesize
4KB

Download
memory/2356-44-0x00000000004A0000-0x00000000004B5000-memory.dmp

Filesize
84KB

Download
memory/2356-32-0x00000000004A0000-0x00000000004B5000-memory.dmp

Filesize
84KB

Download
memory/2356-30-0x00000000004A0000-0x00000000004B5000-memory.dmp

Filesize
84KB

Download
memory/2356-28-0x00000000004A0000-0x00000000004B5000-memory.dmp

Filesize
84KB

Download
memory/2356-26-0x00000000004A0000-0x00000000004B5000-memory.dmp

Filesize
84KB

Download
memory/2356-22-0x00000000004A0000-0x00000000004B5000-memory.dmp

Filesize
84KB

Download
memory/2356-20-0x00000000004A0000-0x00000000004B5000-memory.dmp

Filesize
84KB

Download
memory/2356-18-0x00000000004A0000-0x00000000004B5000-memory.dmp

Filesize
84KB

Download
memory/2356-16-0x00000000004A0000-0x00000000004B5000-memory.dmp

Filesize
84KB

Download
memory/2356-12-0x00000000004A0000-0x00000000004B5000-memory.dmp

Filesize
84KB

Download
memory/2356-10-0x00000000004A0000-0x00000000004B5000-memory.dmp

Filesize
84KB

Download
memory/2356-8-0x00000000004A0000-0x00000000004B5000-memory.dmp

Filesize
84KB

Download
memory/2356-65-0x0000000074A00000-0x00000000750EE000-memory.dmp

Filesize
6.9MB

Download
memory/2356-1-0x0000000001120000-0x0000000001630000-memory.dmp

Filesize
5.1MB

Download
memory/2356-2-0x0000000005570000-0x00000000056B8000-memory.dmp

Filesize
1.3MB

Download
memory/2356-78-0x0000000074A00000-0x00000000750EE000-memory.dmp

Filesize
6.9MB

Download
memory/2984-77-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/2984-68-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/2984-67-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/2984-127-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/2984-132-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download