Analysis
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max time kernel
146s -
max time network
152s -
platform
windows11-21h2_x64 -
resource
win11-20240508-en -
resource tags
arch:x64arch:x86image:win11-20240508-enlocale:en-usos:windows11-21h2-x64system -
submitted
28-05-2024 03:51
Static task
static1
Behavioral task
behavioral1
Sample
a3d0bc5f6e959410caee1353b15a67d5dbba25172b593fe06436acb7a312cfc9.exe
Resource
win10v2004-20240508-en
General
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Target
a3d0bc5f6e959410caee1353b15a67d5dbba25172b593fe06436acb7a312cfc9.exe
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Size
1.9MB
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MD5
2f237011f5f088a4de202490813061a0
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SHA1
d7934ff9d27654ebfcf1d07d6ec1f9c6104f67b0
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SHA256
a3d0bc5f6e959410caee1353b15a67d5dbba25172b593fe06436acb7a312cfc9
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SHA512
5e475596618df2d5369bb4f16bba293fa03f5e4f67684070782bff9e867e7308d6a1ba6d72fca77b143109ce69c21e40547e121e8450ed5f480fb45d87a8a8e0
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SSDEEP
49152:CdKfTn6v2JtTF+TxMoxc1TU+j+dAzGwlrh:CdKfTnFtIuoITsdZ
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/2924-1-0x0000000004010000-0x0000000004159000-memory.dmp family_vidar_v7 behavioral2/memory/3672-4-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/3672-8-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/3672-10-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/3672-14-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/3672-15-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/3672-16-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/3672-33-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/3672-34-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 -
Downloads MZ/PE file
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Executes dropped EXE 1 IoCs
Processes:
kat7203.tmppid process 3672 kat7203.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:
a3d0bc5f6e959410caee1353b15a67d5dbba25172b593fe06436acb7a312cfc9.exedescription pid process target process PID 2924 set thread context of 3672 2924 a3d0bc5f6e959410caee1353b15a67d5dbba25172b593fe06436acb7a312cfc9.exe kat7203.tmp -
Checks processor information in registry 2 TTPs 1 IoCs
Processor information is often read in order to detect sandboxing environments.
Processes:
kat7203.tmpdescription ioc process Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString kat7203.tmp -
Suspicious behavior: EnumeratesProcesses 2 IoCs
Processes:
kat7203.tmppid process 3672 kat7203.tmp 3672 kat7203.tmp -
Suspicious use of WriteProcessMemory 8 IoCs
Processes:
a3d0bc5f6e959410caee1353b15a67d5dbba25172b593fe06436acb7a312cfc9.exedescription pid process target process PID 2924 wrote to memory of 3672 2924 a3d0bc5f6e959410caee1353b15a67d5dbba25172b593fe06436acb7a312cfc9.exe kat7203.tmp PID 2924 wrote to memory of 3672 2924 a3d0bc5f6e959410caee1353b15a67d5dbba25172b593fe06436acb7a312cfc9.exe kat7203.tmp PID 2924 wrote to memory of 3672 2924 a3d0bc5f6e959410caee1353b15a67d5dbba25172b593fe06436acb7a312cfc9.exe kat7203.tmp PID 2924 wrote to memory of 3672 2924 a3d0bc5f6e959410caee1353b15a67d5dbba25172b593fe06436acb7a312cfc9.exe kat7203.tmp PID 2924 wrote to memory of 3672 2924 a3d0bc5f6e959410caee1353b15a67d5dbba25172b593fe06436acb7a312cfc9.exe kat7203.tmp PID 2924 wrote to memory of 3672 2924 a3d0bc5f6e959410caee1353b15a67d5dbba25172b593fe06436acb7a312cfc9.exe kat7203.tmp PID 2924 wrote to memory of 3672 2924 a3d0bc5f6e959410caee1353b15a67d5dbba25172b593fe06436acb7a312cfc9.exe kat7203.tmp PID 2924 wrote to memory of 3672 2924 a3d0bc5f6e959410caee1353b15a67d5dbba25172b593fe06436acb7a312cfc9.exe kat7203.tmp
Processes
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C:\Users\Admin\AppData\Local\Temp\a3d0bc5f6e959410caee1353b15a67d5dbba25172b593fe06436acb7a312cfc9.exe"C:\Users\Admin\AppData\Local\Temp\a3d0bc5f6e959410caee1353b15a67d5dbba25172b593fe06436acb7a312cfc9.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2924 -
C:\Users\Admin\AppData\Local\Temp\kat7203.tmpC:\Users\Admin\AppData\Local\Temp\kat7203.tmp2⤵
- Executes dropped EXE
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
PID:3672
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
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C:\Users\Admin\AppData\Local\Temp\kat7203.tmpFilesize
861KB
MD566064dbdb70a5eb15ebf3bf65aba254b
SHA10284fd320f99f62aca800fb1251eff4c31ec4ed7
SHA2566a94dbda2dd1edcff2331061d65e1baf09d4861cc7ba590c5ec754f3ac96a795
SHA512b05c6c09ae7372c381fba591c3cb13a69a2451b9d38da1a95aac89413d7438083475d06796acb5440cd6ec65b030c9fa6cbdaa0d2fe91a926bae6499c360f17f
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memory/2924-9-0x0000000000400000-0x00000000005EC000-memory.dmpFilesize
1.9MB
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memory/2924-1-0x0000000004010000-0x0000000004159000-memory.dmpFilesize
1.3MB
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memory/2924-0-0x0000000002340000-0x0000000002341000-memory.dmpFilesize
4KB
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memory/3672-4-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/3672-10-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/3672-8-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/3672-14-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/3672-15-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/3672-16-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/3672-19-0x00000000193F0000-0x000000001964F000-memory.dmpFilesize
2.4MB
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memory/3672-33-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/3672-34-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB