Analysis
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max time kernel
146s -
max time network
148s -
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 17:31
Static task
static1
Behavioral task
behavioral1
Sample
4a603605ec2d6291e35c1270233a509d8dc4a0a5cd78df0f42f357755a83765f.exe
Resource
win10v2004-20240508-en
General
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Target
4a603605ec2d6291e35c1270233a509d8dc4a0a5cd78df0f42f357755a83765f.exe
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Size
2.2MB
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MD5
393c09adf4402dd8a3f2a5ac563477bc
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SHA1
57680476466612f930b7033cf4dc366b50b0ef6d
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SHA256
4a603605ec2d6291e35c1270233a509d8dc4a0a5cd78df0f42f357755a83765f
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SHA512
59653ecffeed9db18bb77dafb1263ed4ca85ee87162939de84e4a9b23a6a28c4d44148514ed32afe1c8ac004edb2805ff052f2345e97d26101f825fbdf3f6481
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SSDEEP
24576:Uc0PyhhGkCI1wUL24jtYkYGbawg757CgXueAgX/QU2MZQti1u8LnsDJY6WpEYGYG:UJ0hsA91MPX21tuuIeNHYGY0LzjsJxK
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 10 IoCs
Processes:
resource yara_rule behavioral1/memory/3036-1-0x0000000004120000-0x0000000004233000-memory.dmp family_vidar_v7 behavioral1/memory/840-8-0x0000000000400000-0x0000000000648000-memory.dmp family_vidar_v7 behavioral1/memory/840-9-0x0000000000400000-0x0000000000648000-memory.dmp family_vidar_v7 behavioral1/memory/840-4-0x0000000000400000-0x0000000000648000-memory.dmp family_vidar_v7 behavioral1/memory/840-22-0x0000000000400000-0x0000000000648000-memory.dmp family_vidar_v7 behavioral1/memory/840-39-0x0000000000400000-0x0000000000648000-memory.dmp family_vidar_v7 behavioral1/memory/840-40-0x0000000000400000-0x0000000000648000-memory.dmp family_vidar_v7 behavioral1/memory/840-41-0x0000000000400000-0x0000000000648000-memory.dmp family_vidar_v7 behavioral1/memory/840-57-0x0000000000400000-0x0000000000648000-memory.dmp family_vidar_v7 behavioral1/memory/840-58-0x0000000000400000-0x0000000000648000-memory.dmp family_vidar_v7 -
Downloads MZ/PE file
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Executes dropped EXE 1 IoCs
Processes:
kat53DD.tmppid process 840 kat53DD.tmp -
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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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:
4a603605ec2d6291e35c1270233a509d8dc4a0a5cd78df0f42f357755a83765f.exedescription pid process target process PID 3036 set thread context of 840 3036 4a603605ec2d6291e35c1270233a509d8dc4a0a5cd78df0f42f357755a83765f.exe kat53DD.tmp -
Checks processor information in registry 2 TTPs 2 IoCs
Processor information is often read in order to detect sandboxing environments.
Processes:
kat53DD.tmpdescription ioc process Key opened \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0 kat53DD.tmp Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString kat53DD.tmp -
Suspicious behavior: EnumeratesProcesses 4 IoCs
Processes:
kat53DD.tmppid process 840 kat53DD.tmp 840 kat53DD.tmp 840 kat53DD.tmp 840 kat53DD.tmp -
Suspicious use of WriteProcessMemory 8 IoCs
Processes:
4a603605ec2d6291e35c1270233a509d8dc4a0a5cd78df0f42f357755a83765f.exedescription pid process target process PID 3036 wrote to memory of 840 3036 4a603605ec2d6291e35c1270233a509d8dc4a0a5cd78df0f42f357755a83765f.exe kat53DD.tmp PID 3036 wrote to memory of 840 3036 4a603605ec2d6291e35c1270233a509d8dc4a0a5cd78df0f42f357755a83765f.exe kat53DD.tmp PID 3036 wrote to memory of 840 3036 4a603605ec2d6291e35c1270233a509d8dc4a0a5cd78df0f42f357755a83765f.exe kat53DD.tmp PID 3036 wrote to memory of 840 3036 4a603605ec2d6291e35c1270233a509d8dc4a0a5cd78df0f42f357755a83765f.exe kat53DD.tmp PID 3036 wrote to memory of 840 3036 4a603605ec2d6291e35c1270233a509d8dc4a0a5cd78df0f42f357755a83765f.exe kat53DD.tmp PID 3036 wrote to memory of 840 3036 4a603605ec2d6291e35c1270233a509d8dc4a0a5cd78df0f42f357755a83765f.exe kat53DD.tmp PID 3036 wrote to memory of 840 3036 4a603605ec2d6291e35c1270233a509d8dc4a0a5cd78df0f42f357755a83765f.exe kat53DD.tmp PID 3036 wrote to memory of 840 3036 4a603605ec2d6291e35c1270233a509d8dc4a0a5cd78df0f42f357755a83765f.exe kat53DD.tmp
Processes
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C:\Users\Admin\AppData\Local\Temp\4a603605ec2d6291e35c1270233a509d8dc4a0a5cd78df0f42f357755a83765f.exe"C:\Users\Admin\AppData\Local\Temp\4a603605ec2d6291e35c1270233a509d8dc4a0a5cd78df0f42f357755a83765f.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\kat53DD.tmpC:\Users\Admin\AppData\Local\Temp\kat53DD.tmp2⤵
- Executes dropped EXE
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
Network
MITRE ATT&CK Matrix ATT&CK v13
Replay Monitor
Loading Replay Monitor...
Downloads
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C:\Users\Admin\AppData\Local\Temp\kat53DD.tmpFilesize
861KB
MD566064dbdb70a5eb15ebf3bf65aba254b
SHA10284fd320f99f62aca800fb1251eff4c31ec4ed7
SHA2566a94dbda2dd1edcff2331061d65e1baf09d4861cc7ba590c5ec754f3ac96a795
SHA512b05c6c09ae7372c381fba591c3cb13a69a2451b9d38da1a95aac89413d7438083475d06796acb5440cd6ec65b030c9fa6cbdaa0d2fe91a926bae6499c360f17f
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memory/840-4-0x0000000000400000-0x0000000000648000-memory.dmpFilesize
2.3MB
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memory/840-8-0x0000000000400000-0x0000000000648000-memory.dmpFilesize
2.3MB
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memory/840-9-0x0000000000400000-0x0000000000648000-memory.dmpFilesize
2.3MB
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memory/840-22-0x0000000000400000-0x0000000000648000-memory.dmpFilesize
2.3MB
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memory/840-24-0x0000000020150000-0x00000000203AF000-memory.dmpFilesize
2.4MB
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memory/840-39-0x0000000000400000-0x0000000000648000-memory.dmpFilesize
2.3MB
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memory/840-40-0x0000000000400000-0x0000000000648000-memory.dmpFilesize
2.3MB
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memory/840-41-0x0000000000400000-0x0000000000648000-memory.dmpFilesize
2.3MB
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memory/840-57-0x0000000000400000-0x0000000000648000-memory.dmpFilesize
2.3MB
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memory/840-58-0x0000000000400000-0x0000000000648000-memory.dmpFilesize
2.3MB
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memory/3036-1-0x0000000004120000-0x0000000004233000-memory.dmpFilesize
1.1MB
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memory/3036-10-0x0000000000400000-0x0000000000641000-memory.dmpFilesize
2.3MB
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memory/3036-0-0x0000000000910000-0x0000000000911000-memory.dmpFilesize
4KB