Analysis
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max time kernel
146s -
max time network
151s -
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 04:33
Static task
static1
Behavioral task
behavioral1
Sample
6800fe3c1923b3ad9a1f097bea0031632790d1cda2ae67cdde3cb2c354762a37.exe
Resource
win10v2004-20240508-en
General
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Target
6800fe3c1923b3ad9a1f097bea0031632790d1cda2ae67cdde3cb2c354762a37.exe
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Size
1.9MB
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MD5
c7d4ed4e92f40543452d5bf63492a2c1
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SHA1
1138a962fa36c0dc9301920855710017beaeb208
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SHA256
6800fe3c1923b3ad9a1f097bea0031632790d1cda2ae67cdde3cb2c354762a37
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SHA512
dfd340049f0dab82c93cf605c6780ba5200067ed269b526b516766b310327710cf24ae5599b4a7e03fcb80643cc61f26d0918ff3a113d01c9270aea2907c1dbf
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SSDEEP
49152:CdKfTn6vqJtTF+TxMoxc1TU+j+dAzGwlrh:CdKfTnZtIuoITsdZ
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/4736-1-0x0000000004070000-0x00000000041B9000-memory.dmp family_vidar_v7 behavioral2/memory/3988-4-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/3988-8-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/3988-9-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/3988-17-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/3988-18-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/3988-35-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/3988-36-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 -
Downloads MZ/PE file
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Executes dropped EXE 1 IoCs
Processes:
kat77FF.tmppid process 3988 kat77FF.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:
6800fe3c1923b3ad9a1f097bea0031632790d1cda2ae67cdde3cb2c354762a37.exedescription pid process target process PID 4736 set thread context of 3988 4736 6800fe3c1923b3ad9a1f097bea0031632790d1cda2ae67cdde3cb2c354762a37.exe kat77FF.tmp -
Checks processor information in registry 2 TTPs 1 IoCs
Processor information is often read in order to detect sandboxing environments.
Processes:
kat77FF.tmpdescription ioc process Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString kat77FF.tmp -
Suspicious behavior: EnumeratesProcesses 2 IoCs
Processes:
kat77FF.tmppid process 3988 kat77FF.tmp 3988 kat77FF.tmp -
Suspicious use of WriteProcessMemory 8 IoCs
Processes:
6800fe3c1923b3ad9a1f097bea0031632790d1cda2ae67cdde3cb2c354762a37.exedescription pid process target process PID 4736 wrote to memory of 3988 4736 6800fe3c1923b3ad9a1f097bea0031632790d1cda2ae67cdde3cb2c354762a37.exe kat77FF.tmp PID 4736 wrote to memory of 3988 4736 6800fe3c1923b3ad9a1f097bea0031632790d1cda2ae67cdde3cb2c354762a37.exe kat77FF.tmp PID 4736 wrote to memory of 3988 4736 6800fe3c1923b3ad9a1f097bea0031632790d1cda2ae67cdde3cb2c354762a37.exe kat77FF.tmp PID 4736 wrote to memory of 3988 4736 6800fe3c1923b3ad9a1f097bea0031632790d1cda2ae67cdde3cb2c354762a37.exe kat77FF.tmp PID 4736 wrote to memory of 3988 4736 6800fe3c1923b3ad9a1f097bea0031632790d1cda2ae67cdde3cb2c354762a37.exe kat77FF.tmp PID 4736 wrote to memory of 3988 4736 6800fe3c1923b3ad9a1f097bea0031632790d1cda2ae67cdde3cb2c354762a37.exe kat77FF.tmp PID 4736 wrote to memory of 3988 4736 6800fe3c1923b3ad9a1f097bea0031632790d1cda2ae67cdde3cb2c354762a37.exe kat77FF.tmp PID 4736 wrote to memory of 3988 4736 6800fe3c1923b3ad9a1f097bea0031632790d1cda2ae67cdde3cb2c354762a37.exe kat77FF.tmp
Processes
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C:\Users\Admin\AppData\Local\Temp\6800fe3c1923b3ad9a1f097bea0031632790d1cda2ae67cdde3cb2c354762a37.exe"C:\Users\Admin\AppData\Local\Temp\6800fe3c1923b3ad9a1f097bea0031632790d1cda2ae67cdde3cb2c354762a37.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4736 -
C:\Users\Admin\AppData\Local\Temp\kat77FF.tmpC:\Users\Admin\AppData\Local\Temp\kat77FF.tmp2⤵
- Executes dropped EXE
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
PID:3988
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
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C:\Users\Admin\AppData\Local\Temp\kat77FF.tmpFilesize
861KB
MD566064dbdb70a5eb15ebf3bf65aba254b
SHA10284fd320f99f62aca800fb1251eff4c31ec4ed7
SHA2566a94dbda2dd1edcff2331061d65e1baf09d4861cc7ba590c5ec754f3ac96a795
SHA512b05c6c09ae7372c381fba591c3cb13a69a2451b9d38da1a95aac89413d7438083475d06796acb5440cd6ec65b030c9fa6cbdaa0d2fe91a926bae6499c360f17f
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memory/3988-4-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/3988-8-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/3988-9-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/3988-17-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/3988-18-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/3988-20-0x0000000019470000-0x00000000196CF000-memory.dmpFilesize
2.4MB
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memory/3988-35-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/3988-36-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/4736-0-0x0000000002340000-0x0000000002341000-memory.dmpFilesize
4KB
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memory/4736-1-0x0000000004070000-0x00000000041B9000-memory.dmpFilesize
1.3MB
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memory/4736-10-0x0000000000400000-0x00000000005EC000-memory.dmpFilesize
1.9MB