stealc | 207fb4aeffd47811049fe5c6366f09f70b859c6987883dcd9244a915af91a342

Analysis

max time kernel
147s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
25/06/2024, 14:48

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General

Target

207fb4aeffd47811049fe5c6366f09f70b859c6987883dcd9244a915af91a342.exe
Size

4.4MB
MD5

4a8099ca44ad78fa5414bab4f54ba030
SHA1

ad1e9ee328d7eb870ebdaf9cf592a183f838f459
SHA256

207fb4aeffd47811049fe5c6366f09f70b859c6987883dcd9244a915af91a342
SHA512

b1f905210d372c8352c07ea6c27bd71f12f7ee3a1e40375925bc6cb295b08d07d5bd9407e4da6e7d303a0951fb19e060a652951bfdf67f1151f19720e8698d03
SSDEEP

49152:0fhvX07qcsIUv5z95W+diSQJAoCWFf4z6X5MS/tl3odglPCpgVS84OH:+hc7qcvWzE4OX53C+V5r

Score

10^/10

stealc vidar stealer

Malware Config

Extracted

Family

vidar

https://t.me/g067n

https://steamcommunity.com/profiles/76561199707802586

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 6 IoCs

stealer

resource	yara_rule
behavioral1/memory/4092-70-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral1/memory/4092-68-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral1/memory/4092-73-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral1/memory/4092-74-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral1/memory/4092-75-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral1/memory/4092-77-0x0000000000400000-0x0000000000648000-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

.NET Reactor proctector 1 IoCs

Detects an executable protected by an unregistered version of Eziriz's .NET Reactor.

resource	yara_rule
behavioral1/memory/3040-1-0x0000000000AC0000-0x0000000000F26000-memory.dmp	net_reactor

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3040 set thread context of 4092	3040	207fb4aeffd47811049fe5c6366f09f70b859c6987883dcd9244a915af91a342.exe	83

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
1052	timeout.exe

Suspicious behavior: EnumeratesProcesses 12 IoCs

pid	Process
3040	207fb4aeffd47811049fe5c6366f09f70b859c6987883dcd9244a915af91a342.exe
3040	207fb4aeffd47811049fe5c6366f09f70b859c6987883dcd9244a915af91a342.exe
3040	207fb4aeffd47811049fe5c6366f09f70b859c6987883dcd9244a915af91a342.exe
3040	207fb4aeffd47811049fe5c6366f09f70b859c6987883dcd9244a915af91a342.exe
3040	207fb4aeffd47811049fe5c6366f09f70b859c6987883dcd9244a915af91a342.exe
3040	207fb4aeffd47811049fe5c6366f09f70b859c6987883dcd9244a915af91a342.exe
4092	MSBuild.exe
4092	MSBuild.exe
4092	MSBuild.exe
4092	MSBuild.exe
4092	MSBuild.exe
4092	MSBuild.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3040	207fb4aeffd47811049fe5c6366f09f70b859c6987883dcd9244a915af91a342.exe

Suspicious use of WriteProcessMemory 24 IoCs

description	pid	Process	procid_target
PID 3040 wrote to memory of 224	3040	207fb4aeffd47811049fe5c6366f09f70b859c6987883dcd9244a915af91a342.exe	80
PID 3040 wrote to memory of 224	3040	207fb4aeffd47811049fe5c6366f09f70b859c6987883dcd9244a915af91a342.exe	80
PID 3040 wrote to memory of 224	3040	207fb4aeffd47811049fe5c6366f09f70b859c6987883dcd9244a915af91a342.exe	80
PID 3040 wrote to memory of 216	3040	207fb4aeffd47811049fe5c6366f09f70b859c6987883dcd9244a915af91a342.exe	81
PID 3040 wrote to memory of 216	3040	207fb4aeffd47811049fe5c6366f09f70b859c6987883dcd9244a915af91a342.exe	81
PID 3040 wrote to memory of 216	3040	207fb4aeffd47811049fe5c6366f09f70b859c6987883dcd9244a915af91a342.exe	81
PID 3040 wrote to memory of 2656	3040	207fb4aeffd47811049fe5c6366f09f70b859c6987883dcd9244a915af91a342.exe	82
PID 3040 wrote to memory of 2656	3040	207fb4aeffd47811049fe5c6366f09f70b859c6987883dcd9244a915af91a342.exe	82
PID 3040 wrote to memory of 2656	3040	207fb4aeffd47811049fe5c6366f09f70b859c6987883dcd9244a915af91a342.exe	82
PID 3040 wrote to memory of 4092	3040	207fb4aeffd47811049fe5c6366f09f70b859c6987883dcd9244a915af91a342.exe	83
PID 3040 wrote to memory of 4092	3040	207fb4aeffd47811049fe5c6366f09f70b859c6987883dcd9244a915af91a342.exe	83
PID 3040 wrote to memory of 4092	3040	207fb4aeffd47811049fe5c6366f09f70b859c6987883dcd9244a915af91a342.exe	83
PID 3040 wrote to memory of 4092	3040	207fb4aeffd47811049fe5c6366f09f70b859c6987883dcd9244a915af91a342.exe	83
PID 3040 wrote to memory of 4092	3040	207fb4aeffd47811049fe5c6366f09f70b859c6987883dcd9244a915af91a342.exe	83
PID 3040 wrote to memory of 4092	3040	207fb4aeffd47811049fe5c6366f09f70b859c6987883dcd9244a915af91a342.exe	83
PID 3040 wrote to memory of 4092	3040	207fb4aeffd47811049fe5c6366f09f70b859c6987883dcd9244a915af91a342.exe	83
PID 3040 wrote to memory of 4092	3040	207fb4aeffd47811049fe5c6366f09f70b859c6987883dcd9244a915af91a342.exe	83
PID 3040 wrote to memory of 4092	3040	207fb4aeffd47811049fe5c6366f09f70b859c6987883dcd9244a915af91a342.exe	83
PID 4092 wrote to memory of 4816	4092	MSBuild.exe	85
PID 4092 wrote to memory of 4816	4092	MSBuild.exe	85
PID 4092 wrote to memory of 4816	4092	MSBuild.exe	85
PID 4816 wrote to memory of 1052	4816	cmd.exe	87
PID 4816 wrote to memory of 1052	4816	cmd.exe	87
PID 4816 wrote to memory of 1052	4816	cmd.exe	87

C:\Users\Admin\AppData\Local\Temp\207fb4aeffd47811049fe5c6366f09f70b859c6987883dcd9244a915af91a342.exe
"C:\Users\Admin\AppData\Local\Temp\207fb4aeffd47811049fe5c6366f09f70b859c6987883dcd9244a915af91a342.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3040
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe"
  2⤵
  PID:224
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe"
  2⤵
  PID:216
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe"
  2⤵
  PID:2656
- 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:4092
- - 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\FCAFIJJJKEGI" & exit
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:4816
  - - C:\Windows\SysWOW64\timeout.exe
      timeout /t 10
      4⤵
      Delays execution with timeout.exe
      PID:1052

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

memory/3040-47-0x0000000005AF0000-0x0000000005B05000-memory.dmp

Filesize
84KB

Download
memory/3040-25-0x0000000005AF0000-0x0000000005B05000-memory.dmp

Filesize
84KB

Download
memory/3040-2-0x00000000059E0000-0x0000000005A7C000-memory.dmp

Filesize
624KB

Download
memory/3040-3-0x0000000001980000-0x000000000198A000-memory.dmp

Filesize
40KB

Download
memory/3040-4-0x0000000074640000-0x0000000074DF0000-memory.dmp

Filesize
7.7MB

Download
memory/3040-5-0x0000000003360000-0x000000000342E000-memory.dmp

Filesize
824KB

Download
memory/3040-6-0x0000000003450000-0x0000000003458000-memory.dmp

Filesize
32KB

Download
memory/3040-7-0x0000000005AF0000-0x0000000005B0C000-memory.dmp

Filesize
112KB

Download
memory/3040-15-0x0000000005AF0000-0x0000000005B05000-memory.dmp

Filesize
84KB

Download
memory/3040-37-0x0000000005AF0000-0x0000000005B05000-memory.dmp

Filesize
84KB

Download
memory/3040-8-0x0000000005AF0000-0x0000000005B05000-memory.dmp

Filesize
84KB

Download
memory/3040-72-0x0000000074640000-0x0000000074DF0000-memory.dmp

Filesize
7.7MB

Download
memory/3040-9-0x0000000005AF0000-0x0000000005B05000-memory.dmp

Filesize
84KB

Download
memory/3040-67-0x0000000005AF0000-0x0000000005B05000-memory.dmp

Filesize
84KB

Download
memory/3040-65-0x0000000005AF0000-0x0000000005B05000-memory.dmp

Filesize
84KB

Download
memory/3040-45-0x0000000005AF0000-0x0000000005B05000-memory.dmp

Filesize
84KB

Download
memory/3040-59-0x0000000005AF0000-0x0000000005B05000-memory.dmp

Filesize
84KB

Download
memory/3040-57-0x0000000005AF0000-0x0000000005B05000-memory.dmp

Filesize
84KB

Download
memory/3040-55-0x0000000005AF0000-0x0000000005B05000-memory.dmp

Filesize
84KB

Download
memory/3040-53-0x0000000005AF0000-0x0000000005B05000-memory.dmp

Filesize
84KB

Download
memory/3040-52-0x0000000005AF0000-0x0000000005B05000-memory.dmp

Filesize
84KB

Download
memory/3040-49-0x0000000005AF0000-0x0000000005B05000-memory.dmp

Filesize
84KB

Download
memory/3040-1-0x0000000000AC0000-0x0000000000F26000-memory.dmp

Filesize
4.4MB

Download
memory/3040-63-0x0000000005AF0000-0x0000000005B05000-memory.dmp

Filesize
84KB

Download
memory/3040-17-0x0000000005AF0000-0x0000000005B05000-memory.dmp

Filesize
84KB

Download
memory/3040-41-0x0000000005AF0000-0x0000000005B05000-memory.dmp

Filesize
84KB

Download
memory/3040-39-0x0000000005AF0000-0x0000000005B05000-memory.dmp

Filesize
84KB

Download
memory/3040-35-0x0000000005AF0000-0x0000000005B05000-memory.dmp

Filesize
84KB

Download
memory/3040-33-0x0000000005AF0000-0x0000000005B05000-memory.dmp

Filesize
84KB

Download
memory/3040-31-0x0000000005AF0000-0x0000000005B05000-memory.dmp

Filesize
84KB

Download
memory/3040-29-0x0000000005AF0000-0x0000000005B05000-memory.dmp

Filesize
84KB

Download
memory/3040-11-0x0000000005AF0000-0x0000000005B05000-memory.dmp

Filesize
84KB

Download
memory/3040-27-0x0000000005AF0000-0x0000000005B05000-memory.dmp

Filesize
84KB

Download
memory/3040-61-0x0000000005AF0000-0x0000000005B05000-memory.dmp

Filesize
84KB

Download
memory/3040-0-0x000000007464E000-0x000000007464F000-memory.dmp

Filesize
4KB

Download
memory/3040-23-0x0000000005AF0000-0x0000000005B05000-memory.dmp

Filesize
84KB

Download
memory/3040-21-0x0000000005AF0000-0x0000000005B05000-memory.dmp

Filesize
84KB

Download
memory/3040-19-0x0000000005AF0000-0x0000000005B05000-memory.dmp

Filesize
84KB

Download
memory/3040-43-0x0000000005AF0000-0x0000000005B05000-memory.dmp

Filesize
84KB

Download
memory/3040-13-0x0000000005AF0000-0x0000000005B05000-memory.dmp

Filesize
84KB

Download
memory/4092-73-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/4092-68-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/4092-70-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/4092-74-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/4092-75-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/4092-77-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download