Analysis
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max time kernel
147s -
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
25-05-2024 18:01
Static task
static1
Behavioral task
behavioral1
Sample
bac9d2d3dcee0e7785cfbab90c3f4419f48afd6fafc07074f97114d14beca203.exe
Resource
win10v2004-20240508-en
General
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Target
bac9d2d3dcee0e7785cfbab90c3f4419f48afd6fafc07074f97114d14beca203.exe
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Size
2.0MB
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MD5
522d64a252bd7e004a4100c8e69aa411
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SHA1
46a8c318eea6440e6649d682f189186b97c3fb15
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SHA256
bac9d2d3dcee0e7785cfbab90c3f4419f48afd6fafc07074f97114d14beca203
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SHA512
8b8744e6d700bf76641c391ae1f9106e0fe746729b7af5e36ce0b1c16b9a31dcf18c26462a6c8e4efcebd84487576a0872bcfe4971c937aaf39b4500f094832c
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SSDEEP
49152:s4K3x1vUyJtTF+TxMoxc1TU+j+dAzGwlrh:s4Ex18ytIuoITsdZ
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/4956-1-0x0000000004160000-0x00000000042A9000-memory.dmp family_vidar_v7 behavioral2/memory/4320-8-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/4320-4-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/4320-10-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/4320-16-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/4320-17-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/4320-34-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/4320-35-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 -
Downloads MZ/PE file
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Executes dropped EXE 1 IoCs
Processes:
kat48D0.tmppid process 4320 kat48D0.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:
bac9d2d3dcee0e7785cfbab90c3f4419f48afd6fafc07074f97114d14beca203.exedescription pid process target process PID 4956 set thread context of 4320 4956 bac9d2d3dcee0e7785cfbab90c3f4419f48afd6fafc07074f97114d14beca203.exe kat48D0.tmp -
Checks processor information in registry 2 TTPs 1 IoCs
Processor information is often read in order to detect sandboxing environments.
Processes:
kat48D0.tmpdescription ioc process Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString kat48D0.tmp -
Suspicious behavior: EnumeratesProcesses 2 IoCs
Processes:
kat48D0.tmppid process 4320 kat48D0.tmp 4320 kat48D0.tmp -
Suspicious use of WriteProcessMemory 8 IoCs
Processes:
bac9d2d3dcee0e7785cfbab90c3f4419f48afd6fafc07074f97114d14beca203.exedescription pid process target process PID 4956 wrote to memory of 4320 4956 bac9d2d3dcee0e7785cfbab90c3f4419f48afd6fafc07074f97114d14beca203.exe kat48D0.tmp PID 4956 wrote to memory of 4320 4956 bac9d2d3dcee0e7785cfbab90c3f4419f48afd6fafc07074f97114d14beca203.exe kat48D0.tmp PID 4956 wrote to memory of 4320 4956 bac9d2d3dcee0e7785cfbab90c3f4419f48afd6fafc07074f97114d14beca203.exe kat48D0.tmp PID 4956 wrote to memory of 4320 4956 bac9d2d3dcee0e7785cfbab90c3f4419f48afd6fafc07074f97114d14beca203.exe kat48D0.tmp PID 4956 wrote to memory of 4320 4956 bac9d2d3dcee0e7785cfbab90c3f4419f48afd6fafc07074f97114d14beca203.exe kat48D0.tmp PID 4956 wrote to memory of 4320 4956 bac9d2d3dcee0e7785cfbab90c3f4419f48afd6fafc07074f97114d14beca203.exe kat48D0.tmp PID 4956 wrote to memory of 4320 4956 bac9d2d3dcee0e7785cfbab90c3f4419f48afd6fafc07074f97114d14beca203.exe kat48D0.tmp PID 4956 wrote to memory of 4320 4956 bac9d2d3dcee0e7785cfbab90c3f4419f48afd6fafc07074f97114d14beca203.exe kat48D0.tmp
Processes
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C:\Users\Admin\AppData\Local\Temp\bac9d2d3dcee0e7785cfbab90c3f4419f48afd6fafc07074f97114d14beca203.exe"C:\Users\Admin\AppData\Local\Temp\bac9d2d3dcee0e7785cfbab90c3f4419f48afd6fafc07074f97114d14beca203.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4956 -
C:\Users\Admin\AppData\Local\Temp\kat48D0.tmpC:\Users\Admin\AppData\Local\Temp\kat48D0.tmp2⤵
- Executes dropped EXE
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
PID:4320
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
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C:\Users\Admin\AppData\Local\Temp\kat48D0.tmpFilesize
861KB
MD566064dbdb70a5eb15ebf3bf65aba254b
SHA10284fd320f99f62aca800fb1251eff4c31ec4ed7
SHA2566a94dbda2dd1edcff2331061d65e1baf09d4861cc7ba590c5ec754f3ac96a795
SHA512b05c6c09ae7372c381fba591c3cb13a69a2451b9d38da1a95aac89413d7438083475d06796acb5440cd6ec65b030c9fa6cbdaa0d2fe91a926bae6499c360f17f
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memory/4320-8-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/4320-4-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/4320-10-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/4320-16-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/4320-17-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/4320-20-0x0000000019360000-0x00000000195BF000-memory.dmpFilesize
2.4MB
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memory/4320-34-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/4320-35-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/4956-0-0x0000000002360000-0x0000000002361000-memory.dmpFilesize
4KB
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memory/4956-1-0x0000000004160000-0x00000000042A9000-memory.dmpFilesize
1.3MB
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memory/4956-9-0x0000000000400000-0x000000000060C000-memory.dmpFilesize
2.0MB