Analysis
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max time kernel
134s -
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
26-05-2024 14:42
Static task
static1
Behavioral task
behavioral1
Sample
0a138ba32939189743324ffde02c0c0665353e7527d9881fa109e6f714ed707d.exe
Resource
win7-20240419-en
General
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Target
0a138ba32939189743324ffde02c0c0665353e7527d9881fa109e6f714ed707d.exe
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Size
2.4MB
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MD5
4a221503e71f3bd85d0cad0879029730
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SHA1
4d391c99beb04868ee6c912d31daf4aaac72fd84
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SHA256
0a138ba32939189743324ffde02c0c0665353e7527d9881fa109e6f714ed707d
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SHA512
724a789a3ea90a9e6141671edf12fbe81f24999a7cb4164f83d04179e566e978f5dd1150794669b5ec4402def718614629df922dc6bd480382f2940a98445024
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SSDEEP
49152:jxIRJF1HL+VdX68kUmJtTF+TxMoxc1TU+j+dAzGwlrh:jEJF16dX68dmtIuoITsdZ
Malware Config
Extracted
stealc
Extracted
vidar
https://steamcommunity.com/profiles/76561199689717899
https://t.me/copterwin
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user_agent
Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:128.0) Gecko/20100101 Firefox/128.0
Signatures
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Detect Vidar Stealer 8 IoCs
Processes:
resource yara_rule behavioral2/memory/2712-2-0x0000000004070000-0x00000000041B9000-memory.dmp family_vidar_v7 behavioral2/memory/2500-4-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/2500-8-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/2500-9-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/2500-14-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/2500-15-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/2500-32-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/2500-33-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 -
Downloads MZ/PE file
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Executes dropped EXE 1 IoCs
Processes:
kat4C5B.tmppid process 2500 kat4C5B.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:
0a138ba32939189743324ffde02c0c0665353e7527d9881fa109e6f714ed707d.exedescription pid process target process PID 2712 set thread context of 2500 2712 0a138ba32939189743324ffde02c0c0665353e7527d9881fa109e6f714ed707d.exe kat4C5B.tmp -
Checks processor information in registry 2 TTPs 1 IoCs
Processor information is often read in order to detect sandboxing environments.
Processes:
kat4C5B.tmpdescription ioc process Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString kat4C5B.tmp -
Suspicious behavior: EnumeratesProcesses 2 IoCs
Processes:
kat4C5B.tmppid process 2500 kat4C5B.tmp 2500 kat4C5B.tmp -
Suspicious use of WriteProcessMemory 8 IoCs
Processes:
0a138ba32939189743324ffde02c0c0665353e7527d9881fa109e6f714ed707d.exedescription pid process target process PID 2712 wrote to memory of 2500 2712 0a138ba32939189743324ffde02c0c0665353e7527d9881fa109e6f714ed707d.exe kat4C5B.tmp PID 2712 wrote to memory of 2500 2712 0a138ba32939189743324ffde02c0c0665353e7527d9881fa109e6f714ed707d.exe kat4C5B.tmp PID 2712 wrote to memory of 2500 2712 0a138ba32939189743324ffde02c0c0665353e7527d9881fa109e6f714ed707d.exe kat4C5B.tmp PID 2712 wrote to memory of 2500 2712 0a138ba32939189743324ffde02c0c0665353e7527d9881fa109e6f714ed707d.exe kat4C5B.tmp PID 2712 wrote to memory of 2500 2712 0a138ba32939189743324ffde02c0c0665353e7527d9881fa109e6f714ed707d.exe kat4C5B.tmp PID 2712 wrote to memory of 2500 2712 0a138ba32939189743324ffde02c0c0665353e7527d9881fa109e6f714ed707d.exe kat4C5B.tmp PID 2712 wrote to memory of 2500 2712 0a138ba32939189743324ffde02c0c0665353e7527d9881fa109e6f714ed707d.exe kat4C5B.tmp PID 2712 wrote to memory of 2500 2712 0a138ba32939189743324ffde02c0c0665353e7527d9881fa109e6f714ed707d.exe kat4C5B.tmp
Processes
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C:\Users\Admin\AppData\Local\Temp\0a138ba32939189743324ffde02c0c0665353e7527d9881fa109e6f714ed707d.exe"C:\Users\Admin\AppData\Local\Temp\0a138ba32939189743324ffde02c0c0665353e7527d9881fa109e6f714ed707d.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\kat4C5B.tmpC:\Users\Admin\AppData\Local\Temp\kat4C5B.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\kat4C5B.tmpFilesize
861KB
MD566064dbdb70a5eb15ebf3bf65aba254b
SHA10284fd320f99f62aca800fb1251eff4c31ec4ed7
SHA2566a94dbda2dd1edcff2331061d65e1baf09d4861cc7ba590c5ec754f3ac96a795
SHA512b05c6c09ae7372c381fba591c3cb13a69a2451b9d38da1a95aac89413d7438083475d06796acb5440cd6ec65b030c9fa6cbdaa0d2fe91a926bae6499c360f17f
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memory/2500-4-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/2500-8-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/2500-9-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/2500-14-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/2500-15-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/2500-18-0x000000001B730000-0x000000001B98F000-memory.dmpFilesize
2.4MB
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memory/2500-32-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/2500-33-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/2712-0-0x0000000000850000-0x0000000000851000-memory.dmpFilesize
4KB
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memory/2712-2-0x0000000004070000-0x00000000041B9000-memory.dmpFilesize
1.3MB
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memory/2712-10-0x0000000000400000-0x0000000000678000-memory.dmpFilesize
2.5MB