Analysis
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max time kernel
146s -
max time network
153s -
platform
windows11-21h2_x64 -
resource
win11-20240508-en -
resource tags
arch:x64arch:x86image:win11-20240508-enlocale:en-usos:windows11-21h2-x64system -
submitted
01-07-2024 01:43
Static task
static1
Behavioral task
behavioral1
Sample
5d9dc933ef0ac86a4cc822780674239e2166d70fc45ea67aebc75456b9da803f.exe
Resource
win10v2004-20240611-en
General
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Target
5d9dc933ef0ac86a4cc822780674239e2166d70fc45ea67aebc75456b9da803f.exe
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Size
2.2MB
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MD5
f6c70e61be060afb38a02279082880f4
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SHA1
16c5e255fcfe2cea29c1277899f08b80c6f5de04
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SHA256
5d9dc933ef0ac86a4cc822780674239e2166d70fc45ea67aebc75456b9da803f
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SHA512
6693199de657802583bd56af51edf90d6f44951df0be69ca54ea7394e201c9cecd75e1948af5e8c14bdca581bae53feac1e92a67819b53e54faa36d3d9b4e363
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SSDEEP
24576:Uc0PyhhGkCI1wUL24jtYkYGbawg757CgXueAgXb0U2MZQti1u8LnsDJY6WpEYGYG:UJ0hsA91MPn21tuuIeNHYGY0LzjsJxK
Malware Config
Extracted
vidar
https://t.me/g067n
https://steamcommunity.com/profiles/76561199707802586
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user_agent
Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:129.0) Gecko/20100101 Firefox/129.0
Signatures
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Detect Vidar Stealer 9 IoCs
Processes:
resource yara_rule behavioral2/memory/1444-1-0x0000000004240000-0x0000000004353000-memory.dmp family_vidar_v7 behavioral2/memory/1776-4-0x0000000000400000-0x0000000000648000-memory.dmp family_vidar_v7 behavioral2/memory/1776-10-0x0000000000400000-0x0000000000648000-memory.dmp family_vidar_v7 behavioral2/memory/1776-8-0x0000000000400000-0x0000000000648000-memory.dmp family_vidar_v7 behavioral2/memory/1776-11-0x0000000000400000-0x0000000000648000-memory.dmp family_vidar_v7 behavioral2/memory/1776-12-0x0000000000400000-0x0000000000648000-memory.dmp family_vidar_v7 behavioral2/memory/1776-13-0x0000000000400000-0x0000000000648000-memory.dmp family_vidar_v7 behavioral2/memory/1776-14-0x0000000000400000-0x0000000000648000-memory.dmp family_vidar_v7 behavioral2/memory/1776-15-0x0000000000400000-0x0000000000648000-memory.dmp family_vidar_v7 -
Executes dropped EXE 1 IoCs
Processes:
kat4B22.tmppid process 1776 kat4B22.tmp -
Reads data files stored by FTP clients 2 TTPs
Tries to access configuration files associated with programs like FileZilla.
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Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
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Suspicious use of SetThreadContext 1 IoCs
Processes:
5d9dc933ef0ac86a4cc822780674239e2166d70fc45ea67aebc75456b9da803f.exedescription pid process target process PID 1444 set thread context of 1776 1444 5d9dc933ef0ac86a4cc822780674239e2166d70fc45ea67aebc75456b9da803f.exe kat4B22.tmp -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Checks processor information in registry 2 TTPs 2 IoCs
Processor information is often read in order to detect sandboxing environments.
Processes:
kat4B22.tmpdescription ioc process Key opened \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0 kat4B22.tmp Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString kat4B22.tmp -
Delays execution with timeout.exe 1 IoCs
Processes:
timeout.exepid process 2360 timeout.exe -
Suspicious behavior: EnumeratesProcesses 6 IoCs
Processes:
kat4B22.tmppid process 1776 kat4B22.tmp 1776 kat4B22.tmp 1776 kat4B22.tmp 1776 kat4B22.tmp 1776 kat4B22.tmp 1776 kat4B22.tmp -
Suspicious use of WriteProcessMemory 14 IoCs
Processes:
5d9dc933ef0ac86a4cc822780674239e2166d70fc45ea67aebc75456b9da803f.exekat4B22.tmpcmd.exedescription pid process target process PID 1444 wrote to memory of 1776 1444 5d9dc933ef0ac86a4cc822780674239e2166d70fc45ea67aebc75456b9da803f.exe kat4B22.tmp PID 1444 wrote to memory of 1776 1444 5d9dc933ef0ac86a4cc822780674239e2166d70fc45ea67aebc75456b9da803f.exe kat4B22.tmp PID 1444 wrote to memory of 1776 1444 5d9dc933ef0ac86a4cc822780674239e2166d70fc45ea67aebc75456b9da803f.exe kat4B22.tmp PID 1444 wrote to memory of 1776 1444 5d9dc933ef0ac86a4cc822780674239e2166d70fc45ea67aebc75456b9da803f.exe kat4B22.tmp PID 1444 wrote to memory of 1776 1444 5d9dc933ef0ac86a4cc822780674239e2166d70fc45ea67aebc75456b9da803f.exe kat4B22.tmp PID 1444 wrote to memory of 1776 1444 5d9dc933ef0ac86a4cc822780674239e2166d70fc45ea67aebc75456b9da803f.exe kat4B22.tmp PID 1444 wrote to memory of 1776 1444 5d9dc933ef0ac86a4cc822780674239e2166d70fc45ea67aebc75456b9da803f.exe kat4B22.tmp PID 1444 wrote to memory of 1776 1444 5d9dc933ef0ac86a4cc822780674239e2166d70fc45ea67aebc75456b9da803f.exe kat4B22.tmp PID 1776 wrote to memory of 1696 1776 kat4B22.tmp cmd.exe PID 1776 wrote to memory of 1696 1776 kat4B22.tmp cmd.exe PID 1776 wrote to memory of 1696 1776 kat4B22.tmp cmd.exe PID 1696 wrote to memory of 2360 1696 cmd.exe timeout.exe PID 1696 wrote to memory of 2360 1696 cmd.exe timeout.exe PID 1696 wrote to memory of 2360 1696 cmd.exe timeout.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\5d9dc933ef0ac86a4cc822780674239e2166d70fc45ea67aebc75456b9da803f.exe"C:\Users\Admin\AppData\Local\Temp\5d9dc933ef0ac86a4cc822780674239e2166d70fc45ea67aebc75456b9da803f.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\kat4B22.tmpC:\Users\Admin\AppData\Local\Temp\kat4B22.tmp2⤵
- Executes dropped EXE
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\cmd.exe"C:\Windows\system32\cmd.exe" /c timeout /t 10 & del /f /q "C:\Users\Admin\AppData\Local\Temp\kat4B22.tmp" & rd /s /q "C:\ProgramData\IJEGDBGDBFIJ" & exit3⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\timeout.exetimeout /t 104⤵
- Delays execution with timeout.exe
Network
MITRE ATT&CK Matrix ATT&CK v13
Replay Monitor
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Downloads
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C:\Users\Admin\AppData\Local\Temp\kat4B22.tmpFilesize
861KB
MD566064dbdb70a5eb15ebf3bf65aba254b
SHA10284fd320f99f62aca800fb1251eff4c31ec4ed7
SHA2566a94dbda2dd1edcff2331061d65e1baf09d4861cc7ba590c5ec754f3ac96a795
SHA512b05c6c09ae7372c381fba591c3cb13a69a2451b9d38da1a95aac89413d7438083475d06796acb5440cd6ec65b030c9fa6cbdaa0d2fe91a926bae6499c360f17f
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memory/1444-0-0x00000000025F0000-0x00000000025F1000-memory.dmpFilesize
4KB
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memory/1444-1-0x0000000004240000-0x0000000004353000-memory.dmpFilesize
1.1MB
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memory/1444-9-0x0000000000400000-0x0000000000641000-memory.dmpFilesize
2.3MB
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memory/1776-4-0x0000000000400000-0x0000000000648000-memory.dmpFilesize
2.3MB
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memory/1776-10-0x0000000000400000-0x0000000000648000-memory.dmpFilesize
2.3MB
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memory/1776-8-0x0000000000400000-0x0000000000648000-memory.dmpFilesize
2.3MB
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memory/1776-11-0x0000000000400000-0x0000000000648000-memory.dmpFilesize
2.3MB
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memory/1776-12-0x0000000000400000-0x0000000000648000-memory.dmpFilesize
2.3MB
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memory/1776-13-0x0000000000400000-0x0000000000648000-memory.dmpFilesize
2.3MB
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memory/1776-14-0x0000000000400000-0x0000000000648000-memory.dmpFilesize
2.3MB
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memory/1776-15-0x0000000000400000-0x0000000000648000-memory.dmpFilesize
2.3MB