Analysis
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max time kernel
40s -
max time network
49s -
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 07:53
Static task
static1
Behavioral task
behavioral1
Sample
6636f60fbbac1eb2e4983cbbd921cbe9b64d66071a735a7fe843aa93d7948bcb.exe
Resource
win10v2004-20240508-en
General
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Target
6636f60fbbac1eb2e4983cbbd921cbe9b64d66071a735a7fe843aa93d7948bcb.exe
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Size
2.2MB
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MD5
25693670a7f36d30aeb7996337bb94c3
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SHA1
1886d3e111cf8529871f73a6b0bdb10df96f5e21
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SHA256
6636f60fbbac1eb2e4983cbbd921cbe9b64d66071a735a7fe843aa93d7948bcb
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SHA512
3388cdce9d46bb25d06fe046b69914c73f484961177bd7babc0171b5f7d1ad94405a014aee06a9515f451853dbea0abccf707862c6495c4326502932a2572d9a
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SSDEEP
49152:qpjNvr9ySAOmw4lHHO+SASagXkJr4MDkUwm:qpjNp7p4lHH8n5A
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/1816-1-0x0000000004010000-0x0000000004120000-memory.dmp family_vidar_v7 behavioral1/memory/3608-4-0x0000000000400000-0x0000000000648000-memory.dmp family_vidar_v7 behavioral1/memory/3608-8-0x0000000000400000-0x0000000000648000-memory.dmp family_vidar_v7 behavioral1/memory/3608-9-0x0000000000400000-0x0000000000648000-memory.dmp family_vidar_v7 behavioral1/memory/3608-11-0x0000000000400000-0x0000000000648000-memory.dmp family_vidar_v7 behavioral1/memory/3608-12-0x0000000000400000-0x0000000000648000-memory.dmp family_vidar_v7 behavioral1/memory/3608-13-0x0000000000400000-0x0000000000648000-memory.dmp family_vidar_v7 behavioral1/memory/3608-14-0x0000000000400000-0x0000000000648000-memory.dmp family_vidar_v7 behavioral1/memory/3608-15-0x0000000000400000-0x0000000000648000-memory.dmp family_vidar_v7 -
Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
Processes:
kat4FC6.tmpdescription ioc process Key value queried \REGISTRY\USER\S-1-5-21-2539840389-1261165778-1087677076-1000\Control Panel\International\Geo\Nation kat4FC6.tmp -
Executes dropped EXE 1 IoCs
Processes:
kat4FC6.tmppid process 3608 kat4FC6.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:
6636f60fbbac1eb2e4983cbbd921cbe9b64d66071a735a7fe843aa93d7948bcb.exedescription pid process target process PID 1816 set thread context of 3608 1816 6636f60fbbac1eb2e4983cbbd921cbe9b64d66071a735a7fe843aa93d7948bcb.exe kat4FC6.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:
kat4FC6.tmpdescription ioc process Key opened \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0 kat4FC6.tmp Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString kat4FC6.tmp -
Delays execution with timeout.exe 1 IoCs
Processes:
timeout.exepid process 2504 timeout.exe -
Suspicious behavior: EnumeratesProcesses 6 IoCs
Processes:
kat4FC6.tmppid process 3608 kat4FC6.tmp 3608 kat4FC6.tmp 3608 kat4FC6.tmp 3608 kat4FC6.tmp 3608 kat4FC6.tmp 3608 kat4FC6.tmp -
Suspicious use of WriteProcessMemory 14 IoCs
Processes:
6636f60fbbac1eb2e4983cbbd921cbe9b64d66071a735a7fe843aa93d7948bcb.exekat4FC6.tmpcmd.exedescription pid process target process PID 1816 wrote to memory of 3608 1816 6636f60fbbac1eb2e4983cbbd921cbe9b64d66071a735a7fe843aa93d7948bcb.exe kat4FC6.tmp PID 1816 wrote to memory of 3608 1816 6636f60fbbac1eb2e4983cbbd921cbe9b64d66071a735a7fe843aa93d7948bcb.exe kat4FC6.tmp PID 1816 wrote to memory of 3608 1816 6636f60fbbac1eb2e4983cbbd921cbe9b64d66071a735a7fe843aa93d7948bcb.exe kat4FC6.tmp PID 1816 wrote to memory of 3608 1816 6636f60fbbac1eb2e4983cbbd921cbe9b64d66071a735a7fe843aa93d7948bcb.exe kat4FC6.tmp PID 1816 wrote to memory of 3608 1816 6636f60fbbac1eb2e4983cbbd921cbe9b64d66071a735a7fe843aa93d7948bcb.exe kat4FC6.tmp PID 1816 wrote to memory of 3608 1816 6636f60fbbac1eb2e4983cbbd921cbe9b64d66071a735a7fe843aa93d7948bcb.exe kat4FC6.tmp PID 1816 wrote to memory of 3608 1816 6636f60fbbac1eb2e4983cbbd921cbe9b64d66071a735a7fe843aa93d7948bcb.exe kat4FC6.tmp PID 1816 wrote to memory of 3608 1816 6636f60fbbac1eb2e4983cbbd921cbe9b64d66071a735a7fe843aa93d7948bcb.exe kat4FC6.tmp PID 3608 wrote to memory of 5044 3608 kat4FC6.tmp cmd.exe PID 3608 wrote to memory of 5044 3608 kat4FC6.tmp cmd.exe PID 3608 wrote to memory of 5044 3608 kat4FC6.tmp cmd.exe PID 5044 wrote to memory of 2504 5044 cmd.exe timeout.exe PID 5044 wrote to memory of 2504 5044 cmd.exe timeout.exe PID 5044 wrote to memory of 2504 5044 cmd.exe timeout.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\6636f60fbbac1eb2e4983cbbd921cbe9b64d66071a735a7fe843aa93d7948bcb.exe"C:\Users\Admin\AppData\Local\Temp\6636f60fbbac1eb2e4983cbbd921cbe9b64d66071a735a7fe843aa93d7948bcb.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\kat4FC6.tmpC:\Users\Admin\AppData\Local\Temp\kat4FC6.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\kat4FC6.tmp" & rd /s /q "C:\ProgramData\BKFIJJEGHDAE" & 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
Loading Replay Monitor...
Downloads
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C:\Users\Admin\AppData\Local\Temp\kat4FC6.tmpFilesize
861KB
MD566064dbdb70a5eb15ebf3bf65aba254b
SHA10284fd320f99f62aca800fb1251eff4c31ec4ed7
SHA2566a94dbda2dd1edcff2331061d65e1baf09d4861cc7ba590c5ec754f3ac96a795
SHA512b05c6c09ae7372c381fba591c3cb13a69a2451b9d38da1a95aac89413d7438083475d06796acb5440cd6ec65b030c9fa6cbdaa0d2fe91a926bae6499c360f17f
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memory/1816-0-0x0000000002290000-0x0000000002291000-memory.dmpFilesize
4KB
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memory/1816-1-0x0000000004010000-0x0000000004120000-memory.dmpFilesize
1.1MB
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memory/1816-10-0x0000000000400000-0x0000000000635000-memory.dmpFilesize
2.2MB
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memory/3608-4-0x0000000000400000-0x0000000000648000-memory.dmpFilesize
2.3MB
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memory/3608-8-0x0000000000400000-0x0000000000648000-memory.dmpFilesize
2.3MB
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memory/3608-9-0x0000000000400000-0x0000000000648000-memory.dmpFilesize
2.3MB
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memory/3608-11-0x0000000000400000-0x0000000000648000-memory.dmpFilesize
2.3MB
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memory/3608-12-0x0000000000400000-0x0000000000648000-memory.dmpFilesize
2.3MB
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memory/3608-13-0x0000000000400000-0x0000000000648000-memory.dmpFilesize
2.3MB
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memory/3608-14-0x0000000000400000-0x0000000000648000-memory.dmpFilesize
2.3MB
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memory/3608-15-0x0000000000400000-0x0000000000648000-memory.dmpFilesize
2.3MB