Analysis
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max time kernel
129s -
max time network
124s -
platform
windows10-2004_x64 -
resource
win10v2004-20240611-en -
resource tags
arch:x64arch:x86image:win10v2004-20240611-enlocale:en-usos:windows10-2004-x64system -
submitted
29-06-2024 01:28
Static task
static1
Behavioral task
behavioral1
Sample
f4ab4a7a92d6788ca043965600e1b43d0318b4def0d64eba07dedaa99b12d7bc.exe
Resource
win10v2004-20240611-en
General
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Target
f4ab4a7a92d6788ca043965600e1b43d0318b4def0d64eba07dedaa99b12d7bc.exe
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Size
2.2MB
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MD5
5e162e500cb0e454a31071a06417b762
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SHA1
6cd1e6d05556db31922aad60c007cab682a5b172
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SHA256
f4ab4a7a92d6788ca043965600e1b43d0318b4def0d64eba07dedaa99b12d7bc
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SHA512
2b70406b21028896f59bd518dabd98dfd906d1826853190afeae5e9ac55bd24c046c45628055d8435f5c984e0ddabfa64ebe1dede05e9d8e0c303d0b2d230d34
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SSDEEP
49152:qpjNvr9ySAOmw49HHO+SASagXkJr4MDkUwm:qpjNp7p49HH8n5A
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 16 IoCs
Processes:
resource yara_rule behavioral1/memory/2760-1-0x0000000002BF0000-0x0000000002D00000-memory.dmp family_vidar_v7 behavioral1/memory/4408-4-0x0000000000400000-0x0000000000648000-memory.dmp family_vidar_v7 behavioral1/memory/4408-8-0x0000000000400000-0x0000000000648000-memory.dmp family_vidar_v7 behavioral1/memory/4408-9-0x0000000000400000-0x0000000000648000-memory.dmp family_vidar_v7 behavioral1/memory/4408-22-0x0000000000400000-0x0000000000648000-memory.dmp family_vidar_v7 behavioral1/memory/4408-23-0x0000000000400000-0x0000000000648000-memory.dmp family_vidar_v7 behavioral1/memory/4408-33-0x0000000000400000-0x0000000000648000-memory.dmp family_vidar_v7 behavioral1/memory/4408-34-0x0000000000400000-0x0000000000648000-memory.dmp family_vidar_v7 behavioral1/memory/4408-42-0x0000000000400000-0x0000000000648000-memory.dmp family_vidar_v7 behavioral1/memory/4408-43-0x0000000000400000-0x0000000000648000-memory.dmp family_vidar_v7 behavioral1/memory/4408-59-0x0000000000400000-0x0000000000648000-memory.dmp family_vidar_v7 behavioral1/memory/4408-60-0x0000000000400000-0x0000000000648000-memory.dmp family_vidar_v7 behavioral1/memory/4408-71-0x0000000000400000-0x0000000000648000-memory.dmp family_vidar_v7 behavioral1/memory/4408-72-0x0000000000400000-0x0000000000648000-memory.dmp family_vidar_v7 behavioral1/memory/4408-73-0x0000000000400000-0x0000000000648000-memory.dmp family_vidar_v7 behavioral1/memory/4408-74-0x0000000000400000-0x0000000000648000-memory.dmp family_vidar_v7 -
Downloads MZ/PE file
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Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
Processes:
kat38F2.tmpdescription ioc process Key value queried \REGISTRY\USER\S-1-5-21-4204450073-1267028356-951339405-1000\Control Panel\International\Geo\Nation kat38F2.tmp -
Executes dropped EXE 1 IoCs
Processes:
kat38F2.tmppid process 4408 kat38F2.tmp -
Reads data files stored by FTP clients 2 TTPs
Tries to access configuration files associated with programs like FileZilla.
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Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
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Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
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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:
f4ab4a7a92d6788ca043965600e1b43d0318b4def0d64eba07dedaa99b12d7bc.exedescription pid process target process PID 2760 set thread context of 4408 2760 f4ab4a7a92d6788ca043965600e1b43d0318b4def0d64eba07dedaa99b12d7bc.exe kat38F2.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:
kat38F2.tmpdescription ioc process Key opened \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0 kat38F2.tmp Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString kat38F2.tmp -
Delays execution with timeout.exe 1 IoCs
Processes:
timeout.exepid process 5104 timeout.exe -
Suspicious behavior: EnumeratesProcesses 8 IoCs
Processes:
kat38F2.tmppid process 4408 kat38F2.tmp 4408 kat38F2.tmp 4408 kat38F2.tmp 4408 kat38F2.tmp 4408 kat38F2.tmp 4408 kat38F2.tmp 4408 kat38F2.tmp 4408 kat38F2.tmp -
Suspicious use of WriteProcessMemory 14 IoCs
Processes:
f4ab4a7a92d6788ca043965600e1b43d0318b4def0d64eba07dedaa99b12d7bc.exekat38F2.tmpcmd.exedescription pid process target process PID 2760 wrote to memory of 4408 2760 f4ab4a7a92d6788ca043965600e1b43d0318b4def0d64eba07dedaa99b12d7bc.exe kat38F2.tmp PID 2760 wrote to memory of 4408 2760 f4ab4a7a92d6788ca043965600e1b43d0318b4def0d64eba07dedaa99b12d7bc.exe kat38F2.tmp PID 2760 wrote to memory of 4408 2760 f4ab4a7a92d6788ca043965600e1b43d0318b4def0d64eba07dedaa99b12d7bc.exe kat38F2.tmp PID 2760 wrote to memory of 4408 2760 f4ab4a7a92d6788ca043965600e1b43d0318b4def0d64eba07dedaa99b12d7bc.exe kat38F2.tmp PID 2760 wrote to memory of 4408 2760 f4ab4a7a92d6788ca043965600e1b43d0318b4def0d64eba07dedaa99b12d7bc.exe kat38F2.tmp PID 2760 wrote to memory of 4408 2760 f4ab4a7a92d6788ca043965600e1b43d0318b4def0d64eba07dedaa99b12d7bc.exe kat38F2.tmp PID 2760 wrote to memory of 4408 2760 f4ab4a7a92d6788ca043965600e1b43d0318b4def0d64eba07dedaa99b12d7bc.exe kat38F2.tmp PID 2760 wrote to memory of 4408 2760 f4ab4a7a92d6788ca043965600e1b43d0318b4def0d64eba07dedaa99b12d7bc.exe kat38F2.tmp PID 4408 wrote to memory of 2528 4408 kat38F2.tmp cmd.exe PID 4408 wrote to memory of 2528 4408 kat38F2.tmp cmd.exe PID 4408 wrote to memory of 2528 4408 kat38F2.tmp cmd.exe PID 2528 wrote to memory of 5104 2528 cmd.exe timeout.exe PID 2528 wrote to memory of 5104 2528 cmd.exe timeout.exe PID 2528 wrote to memory of 5104 2528 cmd.exe timeout.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\f4ab4a7a92d6788ca043965600e1b43d0318b4def0d64eba07dedaa99b12d7bc.exe"C:\Users\Admin\AppData\Local\Temp\f4ab4a7a92d6788ca043965600e1b43d0318b4def0d64eba07dedaa99b12d7bc.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2760 -
C:\Users\Admin\AppData\Local\Temp\kat38F2.tmpC:\Users\Admin\AppData\Local\Temp\kat38F2.tmp2⤵
- Checks computer location settings
- Executes dropped EXE
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:4408 -
C:\Windows\SysWOW64\cmd.exe"C:\Windows\system32\cmd.exe" /c timeout /t 10 & del /f /q "C:\Users\Admin\AppData\Local\Temp\kat38F2.tmp" & rd /s /q "C:\ProgramData\CAFHDBGHJKFI" & exit3⤵
- Suspicious use of WriteProcessMemory
PID:2528 -
C:\Windows\SysWOW64\timeout.exetimeout /t 104⤵
- Delays execution with timeout.exe
PID:5104
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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