Analysis
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max time kernel
146s -
max time network
150s -
platform
windows11-21h2_x64 -
resource
win11-20240508-en -
resource tags
arch:x64arch:x86image:win11-20240508-enlocale:en-usos:windows11-21h2-x64system -
submitted
27-05-2024 13:12
Static task
static1
Behavioral task
behavioral1
Sample
f518326e84b36bc2777f3056e8ed4cd2f5ed959fb25f4d33c817571188cabe86.exe
Resource
win10v2004-20240508-en
General
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Target
f518326e84b36bc2777f3056e8ed4cd2f5ed959fb25f4d33c817571188cabe86.exe
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Size
1.9MB
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MD5
50b5de502d560091c9e64159cb64a1b8
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SHA1
34eece44d9f709984d2fd3acb2963621e980e1b6
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SHA256
f518326e84b36bc2777f3056e8ed4cd2f5ed959fb25f4d33c817571188cabe86
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SHA512
caa836ed41be1e4eb96ca302cc554ef00c7fca034ac92bfd1016e5b3ca421fbb51152746c58be6570acef419371ca5c78ce1e475aa873b9d9bd6ec10c671f81b
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SSDEEP
49152:CdKfTn6veJtTF+TxMoxc1TU+j+dAzGwlrh:CdKfTn9tIuoITsdZ
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 9 IoCs
Processes:
resource yara_rule behavioral2/memory/4464-1-0x0000000004040000-0x0000000004189000-memory.dmp family_vidar_v7 behavioral2/memory/5116-4-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/5116-8-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/5116-9-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/5116-16-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/5116-17-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/5116-34-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/5116-50-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/5116-51-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 -
Downloads MZ/PE file
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Executes dropped EXE 1 IoCs
Processes:
kat6978.tmppid process 5116 kat6978.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:
f518326e84b36bc2777f3056e8ed4cd2f5ed959fb25f4d33c817571188cabe86.exedescription pid process target process PID 4464 set thread context of 5116 4464 f518326e84b36bc2777f3056e8ed4cd2f5ed959fb25f4d33c817571188cabe86.exe kat6978.tmp -
Checks processor information in registry 2 TTPs 1 IoCs
Processor information is often read in order to detect sandboxing environments.
Processes:
kat6978.tmpdescription ioc process Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString kat6978.tmp -
Suspicious behavior: EnumeratesProcesses 2 IoCs
Processes:
kat6978.tmppid process 5116 kat6978.tmp 5116 kat6978.tmp -
Suspicious use of WriteProcessMemory 8 IoCs
Processes:
f518326e84b36bc2777f3056e8ed4cd2f5ed959fb25f4d33c817571188cabe86.exedescription pid process target process PID 4464 wrote to memory of 5116 4464 f518326e84b36bc2777f3056e8ed4cd2f5ed959fb25f4d33c817571188cabe86.exe kat6978.tmp PID 4464 wrote to memory of 5116 4464 f518326e84b36bc2777f3056e8ed4cd2f5ed959fb25f4d33c817571188cabe86.exe kat6978.tmp PID 4464 wrote to memory of 5116 4464 f518326e84b36bc2777f3056e8ed4cd2f5ed959fb25f4d33c817571188cabe86.exe kat6978.tmp PID 4464 wrote to memory of 5116 4464 f518326e84b36bc2777f3056e8ed4cd2f5ed959fb25f4d33c817571188cabe86.exe kat6978.tmp PID 4464 wrote to memory of 5116 4464 f518326e84b36bc2777f3056e8ed4cd2f5ed959fb25f4d33c817571188cabe86.exe kat6978.tmp PID 4464 wrote to memory of 5116 4464 f518326e84b36bc2777f3056e8ed4cd2f5ed959fb25f4d33c817571188cabe86.exe kat6978.tmp PID 4464 wrote to memory of 5116 4464 f518326e84b36bc2777f3056e8ed4cd2f5ed959fb25f4d33c817571188cabe86.exe kat6978.tmp PID 4464 wrote to memory of 5116 4464 f518326e84b36bc2777f3056e8ed4cd2f5ed959fb25f4d33c817571188cabe86.exe kat6978.tmp
Processes
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C:\Users\Admin\AppData\Local\Temp\f518326e84b36bc2777f3056e8ed4cd2f5ed959fb25f4d33c817571188cabe86.exe"C:\Users\Admin\AppData\Local\Temp\f518326e84b36bc2777f3056e8ed4cd2f5ed959fb25f4d33c817571188cabe86.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4464 -
C:\Users\Admin\AppData\Local\Temp\kat6978.tmpC:\Users\Admin\AppData\Local\Temp\kat6978.tmp2⤵
- Executes dropped EXE
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
PID:5116
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
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C:\Users\Admin\AppData\Local\Temp\kat6978.tmpFilesize
861KB
MD566064dbdb70a5eb15ebf3bf65aba254b
SHA10284fd320f99f62aca800fb1251eff4c31ec4ed7
SHA2566a94dbda2dd1edcff2331061d65e1baf09d4861cc7ba590c5ec754f3ac96a795
SHA512b05c6c09ae7372c381fba591c3cb13a69a2451b9d38da1a95aac89413d7438083475d06796acb5440cd6ec65b030c9fa6cbdaa0d2fe91a926bae6499c360f17f
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memory/4464-10-0x0000000000400000-0x00000000005EC000-memory.dmpFilesize
1.9MB
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memory/4464-1-0x0000000004040000-0x0000000004189000-memory.dmpFilesize
1.3MB
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memory/4464-0-0x0000000002420000-0x0000000002421000-memory.dmpFilesize
4KB
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memory/5116-4-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/5116-9-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/5116-8-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/5116-16-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/5116-17-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/5116-20-0x000000001B870000-0x000000001BACF000-memory.dmpFilesize
2.4MB
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memory/5116-34-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/5116-50-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/5116-51-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB