Analysis
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max time kernel
134s -
max time network
124s -
platform
windows10-2004_x64 -
resource
win10v2004-20240508-en -
resource tags
arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system -
submitted
27-05-2024 11:52
Static task
static1
Behavioral task
behavioral1
Sample
5a999f30c3aaba3676b7a62747f74315a7771bc5bdc09c83c7e99d6446136c47.exe
Resource
win10v2004-20240508-en
General
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Target
5a999f30c3aaba3676b7a62747f74315a7771bc5bdc09c83c7e99d6446136c47.exe
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Size
1.9MB
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MD5
6b9a4d2e63304d3f921dc8b50443a348
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SHA1
2df6b1d896fb623e62509adec6b147abfcb77340
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SHA256
5a999f30c3aaba3676b7a62747f74315a7771bc5bdc09c83c7e99d6446136c47
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SHA512
30e33013fc89667a5ddaa4ab5bf4ad614a28bd40e6180e882d23019274138a06d220bcae4278f8719adb13c9a15edd3514b224ddbc7ec6119e475baeb45f3dec
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SSDEEP
49152:CdKfTn6vKJtTF+TxMoxc1TU+j+dAzGwlrh:CdKfTnJtIuoITsdZ
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 behavioral1/memory/4600-1-0x0000000004020000-0x0000000004169000-memory.dmp family_vidar_v7 behavioral1/memory/2856-4-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral1/memory/2856-9-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral1/memory/2856-8-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral1/memory/2856-17-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral1/memory/2856-18-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral1/memory/2856-35-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral1/memory/2856-36-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 -
Downloads MZ/PE file
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Executes dropped EXE 1 IoCs
Processes:
kat56CB.tmppid process 2856 kat56CB.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:
5a999f30c3aaba3676b7a62747f74315a7771bc5bdc09c83c7e99d6446136c47.exedescription pid process target process PID 4600 set thread context of 2856 4600 5a999f30c3aaba3676b7a62747f74315a7771bc5bdc09c83c7e99d6446136c47.exe kat56CB.tmp -
Checks processor information in registry 2 TTPs 1 IoCs
Processor information is often read in order to detect sandboxing environments.
Processes:
kat56CB.tmpdescription ioc process Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString kat56CB.tmp -
Suspicious behavior: EnumeratesProcesses 2 IoCs
Processes:
kat56CB.tmppid process 2856 kat56CB.tmp 2856 kat56CB.tmp -
Suspicious use of WriteProcessMemory 8 IoCs
Processes:
5a999f30c3aaba3676b7a62747f74315a7771bc5bdc09c83c7e99d6446136c47.exedescription pid process target process PID 4600 wrote to memory of 2856 4600 5a999f30c3aaba3676b7a62747f74315a7771bc5bdc09c83c7e99d6446136c47.exe kat56CB.tmp PID 4600 wrote to memory of 2856 4600 5a999f30c3aaba3676b7a62747f74315a7771bc5bdc09c83c7e99d6446136c47.exe kat56CB.tmp PID 4600 wrote to memory of 2856 4600 5a999f30c3aaba3676b7a62747f74315a7771bc5bdc09c83c7e99d6446136c47.exe kat56CB.tmp PID 4600 wrote to memory of 2856 4600 5a999f30c3aaba3676b7a62747f74315a7771bc5bdc09c83c7e99d6446136c47.exe kat56CB.tmp PID 4600 wrote to memory of 2856 4600 5a999f30c3aaba3676b7a62747f74315a7771bc5bdc09c83c7e99d6446136c47.exe kat56CB.tmp PID 4600 wrote to memory of 2856 4600 5a999f30c3aaba3676b7a62747f74315a7771bc5bdc09c83c7e99d6446136c47.exe kat56CB.tmp PID 4600 wrote to memory of 2856 4600 5a999f30c3aaba3676b7a62747f74315a7771bc5bdc09c83c7e99d6446136c47.exe kat56CB.tmp PID 4600 wrote to memory of 2856 4600 5a999f30c3aaba3676b7a62747f74315a7771bc5bdc09c83c7e99d6446136c47.exe kat56CB.tmp
Processes
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C:\Users\Admin\AppData\Local\Temp\5a999f30c3aaba3676b7a62747f74315a7771bc5bdc09c83c7e99d6446136c47.exe"C:\Users\Admin\AppData\Local\Temp\5a999f30c3aaba3676b7a62747f74315a7771bc5bdc09c83c7e99d6446136c47.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4600 -
C:\Users\Admin\AppData\Local\Temp\kat56CB.tmpC:\Users\Admin\AppData\Local\Temp\kat56CB.tmp2⤵
- Executes dropped EXE
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
PID:2856
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
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C:\Users\Admin\AppData\Local\Temp\kat56CB.tmpFilesize
861KB
MD566064dbdb70a5eb15ebf3bf65aba254b
SHA10284fd320f99f62aca800fb1251eff4c31ec4ed7
SHA2566a94dbda2dd1edcff2331061d65e1baf09d4861cc7ba590c5ec754f3ac96a795
SHA512b05c6c09ae7372c381fba591c3cb13a69a2451b9d38da1a95aac89413d7438083475d06796acb5440cd6ec65b030c9fa6cbdaa0d2fe91a926bae6499c360f17f
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memory/2856-4-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/2856-9-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/2856-8-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/2856-17-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/2856-18-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/2856-20-0x000000001DBE0000-0x000000001DE3F000-memory.dmpFilesize
2.4MB
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memory/2856-35-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/2856-36-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/4600-0-0x0000000002220000-0x0000000002221000-memory.dmpFilesize
4KB
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memory/4600-1-0x0000000004020000-0x0000000004169000-memory.dmpFilesize
1.3MB
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memory/4600-10-0x0000000000400000-0x00000000005EC000-memory.dmpFilesize
1.9MB