Analysis
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max time kernel
93s -
max time network
124s -
platform
windows10-2004_x64 -
resource
win10v2004-20240426-en -
resource tags
arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system -
submitted
28-05-2024 12:01
Static task
static1
Behavioral task
behavioral1
Sample
18139aec31967373c65a25400649bfd85f8eae4bb9cffdb9ed8e1a9c1f257fd5.exe
Resource
win10v2004-20240426-en
General
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Target
18139aec31967373c65a25400649bfd85f8eae4bb9cffdb9ed8e1a9c1f257fd5.exe
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Size
2.6MB
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MD5
845e7101c77693f1640876c8c3a7a449
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SHA1
e60c85a56203a59701df6c3d14d7bd5c574994ef
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SHA256
18139aec31967373c65a25400649bfd85f8eae4bb9cffdb9ed8e1a9c1f257fd5
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SHA512
fa1b6fdc4f1126c88f47c977d06d253cb984e84877404ac74b34a8b294e422ce0810104d2c58e23ce0048339282f95668a4a6e027cac3aa237ced16c37086f22
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SSDEEP
49152:XQzIzMiqCNwFJtTF+TxMoxc1TU+j+dAzGwlrh:XY598AtIuoITsdZ
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/4864-2-0x0000000004120000-0x0000000004269000-memory.dmp family_vidar_v7 behavioral1/memory/1412-4-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral1/memory/1412-8-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral1/memory/1412-9-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral1/memory/1412-17-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral1/memory/1412-18-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral1/memory/1412-35-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral1/memory/1412-36-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 -
Downloads MZ/PE file
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Executes dropped EXE 1 IoCs
Processes:
kat350A.tmppid process 1412 kat350A.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:
18139aec31967373c65a25400649bfd85f8eae4bb9cffdb9ed8e1a9c1f257fd5.exedescription pid process target process PID 4864 set thread context of 1412 4864 18139aec31967373c65a25400649bfd85f8eae4bb9cffdb9ed8e1a9c1f257fd5.exe kat350A.tmp -
Checks processor information in registry 2 TTPs 1 IoCs
Processor information is often read in order to detect sandboxing environments.
Processes:
kat350A.tmpdescription ioc process Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString kat350A.tmp -
Suspicious behavior: EnumeratesProcesses 2 IoCs
Processes:
kat350A.tmppid process 1412 kat350A.tmp 1412 kat350A.tmp -
Suspicious use of WriteProcessMemory 8 IoCs
Processes:
18139aec31967373c65a25400649bfd85f8eae4bb9cffdb9ed8e1a9c1f257fd5.exedescription pid process target process PID 4864 wrote to memory of 1412 4864 18139aec31967373c65a25400649bfd85f8eae4bb9cffdb9ed8e1a9c1f257fd5.exe kat350A.tmp PID 4864 wrote to memory of 1412 4864 18139aec31967373c65a25400649bfd85f8eae4bb9cffdb9ed8e1a9c1f257fd5.exe kat350A.tmp PID 4864 wrote to memory of 1412 4864 18139aec31967373c65a25400649bfd85f8eae4bb9cffdb9ed8e1a9c1f257fd5.exe kat350A.tmp PID 4864 wrote to memory of 1412 4864 18139aec31967373c65a25400649bfd85f8eae4bb9cffdb9ed8e1a9c1f257fd5.exe kat350A.tmp PID 4864 wrote to memory of 1412 4864 18139aec31967373c65a25400649bfd85f8eae4bb9cffdb9ed8e1a9c1f257fd5.exe kat350A.tmp PID 4864 wrote to memory of 1412 4864 18139aec31967373c65a25400649bfd85f8eae4bb9cffdb9ed8e1a9c1f257fd5.exe kat350A.tmp PID 4864 wrote to memory of 1412 4864 18139aec31967373c65a25400649bfd85f8eae4bb9cffdb9ed8e1a9c1f257fd5.exe kat350A.tmp PID 4864 wrote to memory of 1412 4864 18139aec31967373c65a25400649bfd85f8eae4bb9cffdb9ed8e1a9c1f257fd5.exe kat350A.tmp
Processes
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C:\Users\Admin\AppData\Local\Temp\18139aec31967373c65a25400649bfd85f8eae4bb9cffdb9ed8e1a9c1f257fd5.exe"C:\Users\Admin\AppData\Local\Temp\18139aec31967373c65a25400649bfd85f8eae4bb9cffdb9ed8e1a9c1f257fd5.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4864 -
C:\Users\Admin\AppData\Local\Temp\kat350A.tmpC:\Users\Admin\AppData\Local\Temp\kat350A.tmp2⤵
- Executes dropped EXE
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
PID:1412
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
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C:\Users\Admin\AppData\Local\Temp\kat350A.tmpFilesize
861KB
MD566064dbdb70a5eb15ebf3bf65aba254b
SHA10284fd320f99f62aca800fb1251eff4c31ec4ed7
SHA2566a94dbda2dd1edcff2331061d65e1baf09d4861cc7ba590c5ec754f3ac96a795
SHA512b05c6c09ae7372c381fba591c3cb13a69a2451b9d38da1a95aac89413d7438083475d06796acb5440cd6ec65b030c9fa6cbdaa0d2fe91a926bae6499c360f17f
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memory/1412-4-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/1412-8-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/1412-9-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/1412-17-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/1412-18-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/1412-20-0x000000001DBF0000-0x000000001DE4F000-memory.dmpFilesize
2.4MB
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memory/1412-35-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/1412-36-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/4864-0-0x00000000022F0000-0x00000000022F1000-memory.dmpFilesize
4KB
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memory/4864-2-0x0000000004120000-0x0000000004269000-memory.dmpFilesize
1.3MB
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memory/4864-10-0x0000000000400000-0x000000000069E000-memory.dmpFilesize
2.6MB