Analysis
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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
29-06-2024 01:37
Static task
static1
Behavioral task
behavioral1
Sample
a3f9ac504293544a21874fc40f5def840941a9f6fe975b9ca02a2b49438ce3bb.exe
Resource
win10v2004-20240508-en
General
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Target
a3f9ac504293544a21874fc40f5def840941a9f6fe975b9ca02a2b49438ce3bb.exe
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Size
2.2MB
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MD5
e80b223a08679f9aa8bfce755e144ffe
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SHA1
2b853c21a2bf68e18c1bdda8ffd5873a841abfec
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SHA256
a3f9ac504293544a21874fc40f5def840941a9f6fe975b9ca02a2b49438ce3bb
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SHA512
6258223c825a77485e33db34a889325224cfd8b6a8b773bb67fa0cfd98180d7bc6146be353f1eba91130ea5da29088527c4a628e8608f22a053a5ab48467db24
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SSDEEP
49152:qpjNvr9ySAOmw41HHO+SASagXkJr4MDkUwm:qpjNp7p41HH8n5A
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/1828-1-0x0000000004130000-0x0000000004240000-memory.dmp family_vidar_v7 behavioral1/memory/4880-10-0x0000000000400000-0x0000000000648000-memory.dmp family_vidar_v7 behavioral1/memory/4880-8-0x0000000000400000-0x0000000000648000-memory.dmp family_vidar_v7 behavioral1/memory/4880-4-0x0000000000400000-0x0000000000648000-memory.dmp family_vidar_v7 behavioral1/memory/4880-11-0x0000000000400000-0x0000000000648000-memory.dmp family_vidar_v7 behavioral1/memory/4880-12-0x0000000000400000-0x0000000000648000-memory.dmp family_vidar_v7 behavioral1/memory/4880-13-0x0000000000400000-0x0000000000648000-memory.dmp family_vidar_v7 behavioral1/memory/4880-14-0x0000000000400000-0x0000000000648000-memory.dmp family_vidar_v7 behavioral1/memory/4880-15-0x0000000000400000-0x0000000000648000-memory.dmp family_vidar_v7 -
Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
Processes:
kat49BB.tmpdescription ioc process Key value queried \REGISTRY\USER\S-1-5-21-1337824034-2731376981-3755436523-1000\Control Panel\International\Geo\Nation kat49BB.tmp -
Executes dropped EXE 1 IoCs
Processes:
kat49BB.tmppid process 4880 kat49BB.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:
a3f9ac504293544a21874fc40f5def840941a9f6fe975b9ca02a2b49438ce3bb.exedescription pid process target process PID 1828 set thread context of 4880 1828 a3f9ac504293544a21874fc40f5def840941a9f6fe975b9ca02a2b49438ce3bb.exe kat49BB.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:
kat49BB.tmpdescription ioc process Key opened \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0 kat49BB.tmp Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString kat49BB.tmp -
Delays execution with timeout.exe 1 IoCs
Processes:
timeout.exepid process 4928 timeout.exe -
Suspicious behavior: EnumeratesProcesses 6 IoCs
Processes:
kat49BB.tmppid process 4880 kat49BB.tmp 4880 kat49BB.tmp 4880 kat49BB.tmp 4880 kat49BB.tmp 4880 kat49BB.tmp 4880 kat49BB.tmp -
Suspicious use of WriteProcessMemory 14 IoCs
Processes:
a3f9ac504293544a21874fc40f5def840941a9f6fe975b9ca02a2b49438ce3bb.exekat49BB.tmpcmd.exedescription pid process target process PID 1828 wrote to memory of 4880 1828 a3f9ac504293544a21874fc40f5def840941a9f6fe975b9ca02a2b49438ce3bb.exe kat49BB.tmp PID 1828 wrote to memory of 4880 1828 a3f9ac504293544a21874fc40f5def840941a9f6fe975b9ca02a2b49438ce3bb.exe kat49BB.tmp PID 1828 wrote to memory of 4880 1828 a3f9ac504293544a21874fc40f5def840941a9f6fe975b9ca02a2b49438ce3bb.exe kat49BB.tmp PID 1828 wrote to memory of 4880 1828 a3f9ac504293544a21874fc40f5def840941a9f6fe975b9ca02a2b49438ce3bb.exe kat49BB.tmp PID 1828 wrote to memory of 4880 1828 a3f9ac504293544a21874fc40f5def840941a9f6fe975b9ca02a2b49438ce3bb.exe kat49BB.tmp PID 1828 wrote to memory of 4880 1828 a3f9ac504293544a21874fc40f5def840941a9f6fe975b9ca02a2b49438ce3bb.exe kat49BB.tmp PID 1828 wrote to memory of 4880 1828 a3f9ac504293544a21874fc40f5def840941a9f6fe975b9ca02a2b49438ce3bb.exe kat49BB.tmp PID 1828 wrote to memory of 4880 1828 a3f9ac504293544a21874fc40f5def840941a9f6fe975b9ca02a2b49438ce3bb.exe kat49BB.tmp PID 4880 wrote to memory of 3964 4880 kat49BB.tmp cmd.exe PID 4880 wrote to memory of 3964 4880 kat49BB.tmp cmd.exe PID 4880 wrote to memory of 3964 4880 kat49BB.tmp cmd.exe PID 3964 wrote to memory of 4928 3964 cmd.exe timeout.exe PID 3964 wrote to memory of 4928 3964 cmd.exe timeout.exe PID 3964 wrote to memory of 4928 3964 cmd.exe timeout.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\a3f9ac504293544a21874fc40f5def840941a9f6fe975b9ca02a2b49438ce3bb.exe"C:\Users\Admin\AppData\Local\Temp\a3f9ac504293544a21874fc40f5def840941a9f6fe975b9ca02a2b49438ce3bb.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1828 -
C:\Users\Admin\AppData\Local\Temp\kat49BB.tmpC:\Users\Admin\AppData\Local\Temp\kat49BB.tmp2⤵
- Checks computer location settings
- Executes dropped EXE
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:4880 -
C:\Windows\SysWOW64\cmd.exe"C:\Windows\system32\cmd.exe" /c timeout /t 10 & del /f /q "C:\Users\Admin\AppData\Local\Temp\kat49BB.tmp" & rd /s /q "C:\ProgramData\CAKKKJEHDBGI" & exit3⤵
- Suspicious use of WriteProcessMemory
PID:3964 -
C:\Windows\SysWOW64\timeout.exetimeout /t 104⤵
- Delays execution with timeout.exe
PID:4928
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
861KB
MD566064dbdb70a5eb15ebf3bf65aba254b
SHA10284fd320f99f62aca800fb1251eff4c31ec4ed7
SHA2566a94dbda2dd1edcff2331061d65e1baf09d4861cc7ba590c5ec754f3ac96a795
SHA512b05c6c09ae7372c381fba591c3cb13a69a2451b9d38da1a95aac89413d7438083475d06796acb5440cd6ec65b030c9fa6cbdaa0d2fe91a926bae6499c360f17f