Analysis
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max time kernel
44s -
max time network
54s -
platform
windows10-2004_x64 -
resource
win10v2004-20240508-en -
resource tags
arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system -
submitted
30-06-2024 19:38
Static task
static1
Behavioral task
behavioral1
Sample
8228391118e1475949504f7b156f8055e30f3fc6b1b8b8f17c3dc9cc094dd700.exe
Resource
win10v2004-20240508-en
General
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Target
8228391118e1475949504f7b156f8055e30f3fc6b1b8b8f17c3dc9cc094dd700.exe
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Size
2.2MB
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MD5
aff8776e8db950502e5b9b9e8f98ee58
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SHA1
c5cdb3b8c3b755118775f1861cbe6007b1d948e2
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SHA256
8228391118e1475949504f7b156f8055e30f3fc6b1b8b8f17c3dc9cc094dd700
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SHA512
3431204f88963198dad7ea88c3f2eca34c43496faa850e1986e8f4f60ab756b7ce9bc88ad4b73d5bcd9fa4fe3a0aaa2fcc124de94e9770522521c10db8ada709
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SSDEEP
24576:Uc0PyhhGkCI1wUL24jtYkYGbawg757CgXueAgXD6U2MZQti1u8LnsDJY6WpEYGYG:UJ0hsA91MPl21tuuIeNHYGY0LzjsJxK
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 behavioral1/memory/448-2-0x0000000004160000-0x0000000004273000-memory.dmp family_vidar_v7 behavioral1/memory/3996-4-0x0000000000400000-0x0000000000648000-memory.dmp family_vidar_v7 behavioral1/memory/3996-8-0x0000000000400000-0x0000000000648000-memory.dmp family_vidar_v7 behavioral1/memory/3996-9-0x0000000000400000-0x0000000000648000-memory.dmp family_vidar_v7 behavioral1/memory/3996-11-0x0000000000400000-0x0000000000648000-memory.dmp family_vidar_v7 behavioral1/memory/3996-12-0x0000000000400000-0x0000000000648000-memory.dmp family_vidar_v7 behavioral1/memory/3996-13-0x0000000000400000-0x0000000000648000-memory.dmp family_vidar_v7 behavioral1/memory/3996-14-0x0000000000400000-0x0000000000648000-memory.dmp family_vidar_v7 behavioral1/memory/3996-15-0x0000000000400000-0x0000000000648000-memory.dmp family_vidar_v7 -
Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
Processes:
kat3865.tmpdescription ioc process Key value queried \REGISTRY\USER\S-1-5-21-2539840389-1261165778-1087677076-1000\Control Panel\International\Geo\Nation kat3865.tmp -
Executes dropped EXE 1 IoCs
Processes:
kat3865.tmppid process 3996 kat3865.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:
8228391118e1475949504f7b156f8055e30f3fc6b1b8b8f17c3dc9cc094dd700.exedescription pid process target process PID 448 set thread context of 3996 448 8228391118e1475949504f7b156f8055e30f3fc6b1b8b8f17c3dc9cc094dd700.exe kat3865.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:
kat3865.tmpdescription ioc process Key opened \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0 kat3865.tmp Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString kat3865.tmp -
Delays execution with timeout.exe 1 IoCs
Processes:
timeout.exepid process 5064 timeout.exe -
Suspicious behavior: EnumeratesProcesses 6 IoCs
Processes:
kat3865.tmppid process 3996 kat3865.tmp 3996 kat3865.tmp 3996 kat3865.tmp 3996 kat3865.tmp 3996 kat3865.tmp 3996 kat3865.tmp -
Suspicious use of WriteProcessMemory 14 IoCs
Processes:
8228391118e1475949504f7b156f8055e30f3fc6b1b8b8f17c3dc9cc094dd700.exekat3865.tmpcmd.exedescription pid process target process PID 448 wrote to memory of 3996 448 8228391118e1475949504f7b156f8055e30f3fc6b1b8b8f17c3dc9cc094dd700.exe kat3865.tmp PID 448 wrote to memory of 3996 448 8228391118e1475949504f7b156f8055e30f3fc6b1b8b8f17c3dc9cc094dd700.exe kat3865.tmp PID 448 wrote to memory of 3996 448 8228391118e1475949504f7b156f8055e30f3fc6b1b8b8f17c3dc9cc094dd700.exe kat3865.tmp PID 448 wrote to memory of 3996 448 8228391118e1475949504f7b156f8055e30f3fc6b1b8b8f17c3dc9cc094dd700.exe kat3865.tmp PID 448 wrote to memory of 3996 448 8228391118e1475949504f7b156f8055e30f3fc6b1b8b8f17c3dc9cc094dd700.exe kat3865.tmp PID 448 wrote to memory of 3996 448 8228391118e1475949504f7b156f8055e30f3fc6b1b8b8f17c3dc9cc094dd700.exe kat3865.tmp PID 448 wrote to memory of 3996 448 8228391118e1475949504f7b156f8055e30f3fc6b1b8b8f17c3dc9cc094dd700.exe kat3865.tmp PID 448 wrote to memory of 3996 448 8228391118e1475949504f7b156f8055e30f3fc6b1b8b8f17c3dc9cc094dd700.exe kat3865.tmp PID 3996 wrote to memory of 4544 3996 kat3865.tmp cmd.exe PID 3996 wrote to memory of 4544 3996 kat3865.tmp cmd.exe PID 3996 wrote to memory of 4544 3996 kat3865.tmp cmd.exe PID 4544 wrote to memory of 5064 4544 cmd.exe timeout.exe PID 4544 wrote to memory of 5064 4544 cmd.exe timeout.exe PID 4544 wrote to memory of 5064 4544 cmd.exe timeout.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\8228391118e1475949504f7b156f8055e30f3fc6b1b8b8f17c3dc9cc094dd700.exe"C:\Users\Admin\AppData\Local\Temp\8228391118e1475949504f7b156f8055e30f3fc6b1b8b8f17c3dc9cc094dd700.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\kat3865.tmpC:\Users\Admin\AppData\Local\Temp\kat3865.tmp2⤵
- Checks computer location settings
- 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\kat3865.tmp" & rd /s /q "C:\ProgramData\EGHCBKKKFHCG" & 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\kat3865.tmpFilesize
861KB
MD566064dbdb70a5eb15ebf3bf65aba254b
SHA10284fd320f99f62aca800fb1251eff4c31ec4ed7
SHA2566a94dbda2dd1edcff2331061d65e1baf09d4861cc7ba590c5ec754f3ac96a795
SHA512b05c6c09ae7372c381fba591c3cb13a69a2451b9d38da1a95aac89413d7438083475d06796acb5440cd6ec65b030c9fa6cbdaa0d2fe91a926bae6499c360f17f
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memory/448-0-0x00000000024F0000-0x00000000024F1000-memory.dmpFilesize
4KB
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memory/448-2-0x0000000004160000-0x0000000004273000-memory.dmpFilesize
1.1MB
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memory/448-10-0x0000000000400000-0x0000000000641000-memory.dmpFilesize
2.3MB
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memory/3996-4-0x0000000000400000-0x0000000000648000-memory.dmpFilesize
2.3MB
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memory/3996-8-0x0000000000400000-0x0000000000648000-memory.dmpFilesize
2.3MB
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memory/3996-9-0x0000000000400000-0x0000000000648000-memory.dmpFilesize
2.3MB
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memory/3996-11-0x0000000000400000-0x0000000000648000-memory.dmpFilesize
2.3MB
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memory/3996-12-0x0000000000400000-0x0000000000648000-memory.dmpFilesize
2.3MB
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memory/3996-13-0x0000000000400000-0x0000000000648000-memory.dmpFilesize
2.3MB
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memory/3996-14-0x0000000000400000-0x0000000000648000-memory.dmpFilesize
2.3MB
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memory/3996-15-0x0000000000400000-0x0000000000648000-memory.dmpFilesize
2.3MB