Analysis
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max time kernel
149s -
max time network
150s -
platform
windows11-21h2_x64 -
resource
win11-20240426-en -
resource tags
arch:x64arch:x86image:win11-20240426-enlocale:en-usos:windows11-21h2-x64system -
submitted
28-05-2024 02:31
Static task
static1
Behavioral task
behavioral1
Sample
682ce4744110926ffe33e9b9739fc8d1ddf41a758d3a4ed39466993e1bc27e0b.exe
Resource
win10v2004-20240508-en
General
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Target
682ce4744110926ffe33e9b9739fc8d1ddf41a758d3a4ed39466993e1bc27e0b.exe
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Size
1.9MB
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MD5
bbbf146e8129c4e8f9ad7f17953af30f
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SHA1
6314235cd5d2124efaf3cefa3d8dfd3119a15358
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SHA256
682ce4744110926ffe33e9b9739fc8d1ddf41a758d3a4ed39466993e1bc27e0b
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SHA512
6c5c735602a67f2719a436cbc2b328b429c05682ac4e7b2f3b04ee10388eecbae7d8262d1621ee1a893182301e7f26e53889550064d6465d37b06b43a9d70cea
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SSDEEP
49152:CdKfTn6v+JtTF+TxMoxc1TU+j+dAzGwlrh:CdKfTn1tIuoITsdZ
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/1868-2-0x0000000004020000-0x0000000004169000-memory.dmp family_vidar_v7 behavioral2/memory/2436-8-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/2436-9-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/2436-4-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/2436-19-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/2436-20-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/2436-37-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/2436-38-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 -
Downloads MZ/PE file
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Executes dropped EXE 1 IoCs
Processes:
kat4C3B.tmppid process 2436 kat4C3B.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:
682ce4744110926ffe33e9b9739fc8d1ddf41a758d3a4ed39466993e1bc27e0b.exedescription pid process target process PID 1868 set thread context of 2436 1868 682ce4744110926ffe33e9b9739fc8d1ddf41a758d3a4ed39466993e1bc27e0b.exe kat4C3B.tmp -
Checks processor information in registry 2 TTPs 1 IoCs
Processor information is often read in order to detect sandboxing environments.
Processes:
kat4C3B.tmpdescription ioc process Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString kat4C3B.tmp -
Suspicious behavior: EnumeratesProcesses 2 IoCs
Processes:
kat4C3B.tmppid process 2436 kat4C3B.tmp 2436 kat4C3B.tmp -
Suspicious use of WriteProcessMemory 8 IoCs
Processes:
682ce4744110926ffe33e9b9739fc8d1ddf41a758d3a4ed39466993e1bc27e0b.exedescription pid process target process PID 1868 wrote to memory of 2436 1868 682ce4744110926ffe33e9b9739fc8d1ddf41a758d3a4ed39466993e1bc27e0b.exe kat4C3B.tmp PID 1868 wrote to memory of 2436 1868 682ce4744110926ffe33e9b9739fc8d1ddf41a758d3a4ed39466993e1bc27e0b.exe kat4C3B.tmp PID 1868 wrote to memory of 2436 1868 682ce4744110926ffe33e9b9739fc8d1ddf41a758d3a4ed39466993e1bc27e0b.exe kat4C3B.tmp PID 1868 wrote to memory of 2436 1868 682ce4744110926ffe33e9b9739fc8d1ddf41a758d3a4ed39466993e1bc27e0b.exe kat4C3B.tmp PID 1868 wrote to memory of 2436 1868 682ce4744110926ffe33e9b9739fc8d1ddf41a758d3a4ed39466993e1bc27e0b.exe kat4C3B.tmp PID 1868 wrote to memory of 2436 1868 682ce4744110926ffe33e9b9739fc8d1ddf41a758d3a4ed39466993e1bc27e0b.exe kat4C3B.tmp PID 1868 wrote to memory of 2436 1868 682ce4744110926ffe33e9b9739fc8d1ddf41a758d3a4ed39466993e1bc27e0b.exe kat4C3B.tmp PID 1868 wrote to memory of 2436 1868 682ce4744110926ffe33e9b9739fc8d1ddf41a758d3a4ed39466993e1bc27e0b.exe kat4C3B.tmp
Processes
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C:\Users\Admin\AppData\Local\Temp\682ce4744110926ffe33e9b9739fc8d1ddf41a758d3a4ed39466993e1bc27e0b.exe"C:\Users\Admin\AppData\Local\Temp\682ce4744110926ffe33e9b9739fc8d1ddf41a758d3a4ed39466993e1bc27e0b.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1868 -
C:\Users\Admin\AppData\Local\Temp\kat4C3B.tmpC:\Users\Admin\AppData\Local\Temp\kat4C3B.tmp2⤵
- Executes dropped EXE
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
PID:2436
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
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C:\Users\Admin\AppData\Local\Temp\kat4C3B.tmpFilesize
861KB
MD566064dbdb70a5eb15ebf3bf65aba254b
SHA10284fd320f99f62aca800fb1251eff4c31ec4ed7
SHA2566a94dbda2dd1edcff2331061d65e1baf09d4861cc7ba590c5ec754f3ac96a795
SHA512b05c6c09ae7372c381fba591c3cb13a69a2451b9d38da1a95aac89413d7438083475d06796acb5440cd6ec65b030c9fa6cbdaa0d2fe91a926bae6499c360f17f
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memory/1868-0-0x0000000002340000-0x0000000002341000-memory.dmpFilesize
4KB
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memory/1868-2-0x0000000004020000-0x0000000004169000-memory.dmpFilesize
1.3MB
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memory/1868-10-0x0000000000400000-0x00000000005EC000-memory.dmpFilesize
1.9MB
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memory/2436-8-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/2436-9-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/2436-4-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/2436-19-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/2436-20-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/2436-22-0x0000000026020000-0x000000002627F000-memory.dmpFilesize
2.4MB
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memory/2436-37-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/2436-38-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB