Analysis
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max time kernel
89s -
max time network
125s -
platform
windows11-21h2_x64 -
resource
win11-20240508-en -
resource tags
arch:x64arch:x86image:win11-20240508-enlocale:en-usos:windows11-21h2-x64system -
submitted
23-05-2024 10:02
Static task
static1
Behavioral task
behavioral1
Sample
79a8a05cc8390c81d05a519f362fda1cbc145907867c85b2a819c8dcb6660aaa.exe
Resource
win10v2004-20240508-en
General
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Target
79a8a05cc8390c81d05a519f362fda1cbc145907867c85b2a819c8dcb6660aaa.exe
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Size
1.8MB
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MD5
1881e115a57a40aa86493f5424972c04
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SHA1
9ea6315817acb0f6a5e226f7482d1b8735b07133
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SHA256
79a8a05cc8390c81d05a519f362fda1cbc145907867c85b2a819c8dcb6660aaa
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SHA512
70e0b4f60514035f003797ff475cfd4693367bef4d3326dfc402da564b8d8317db816c81dd24679a302cf484718e705943907fff2a20930f419c2631285bd0bd
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SSDEEP
24576:FBfuZfeq6sdO6hTdtTF+TxMoxQH1Tj4wtjYZH1DmoYYzi3WH45yv+OueSJhm9e:F7qFPJtTF+TxMoxc1TU+j+dAzGwlrh
Malware Config
Extracted
stealc
Signatures
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Detect Vidar Stealer 8 IoCs
Processes:
resource yara_rule behavioral2/memory/4852-2-0x0000000004060000-0x00000000041A9000-memory.dmp family_vidar_v7 behavioral2/memory/3304-9-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/3304-8-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/3304-4-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/3304-19-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/3304-20-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/3304-37-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/3304-38-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 -
Downloads MZ/PE file
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Executes dropped EXE 1 IoCs
Processes:
kat41BC.tmppid process 3304 kat41BC.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:
79a8a05cc8390c81d05a519f362fda1cbc145907867c85b2a819c8dcb6660aaa.exedescription pid process target process PID 4852 set thread context of 3304 4852 79a8a05cc8390c81d05a519f362fda1cbc145907867c85b2a819c8dcb6660aaa.exe kat41BC.tmp -
Checks processor information in registry 2 TTPs 1 IoCs
Processor information is often read in order to detect sandboxing environments.
Processes:
kat41BC.tmpdescription ioc process Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString kat41BC.tmp -
Suspicious behavior: EnumeratesProcesses 2 IoCs
Processes:
kat41BC.tmppid process 3304 kat41BC.tmp 3304 kat41BC.tmp -
Suspicious use of WriteProcessMemory 8 IoCs
Processes:
79a8a05cc8390c81d05a519f362fda1cbc145907867c85b2a819c8dcb6660aaa.exedescription pid process target process PID 4852 wrote to memory of 3304 4852 79a8a05cc8390c81d05a519f362fda1cbc145907867c85b2a819c8dcb6660aaa.exe kat41BC.tmp PID 4852 wrote to memory of 3304 4852 79a8a05cc8390c81d05a519f362fda1cbc145907867c85b2a819c8dcb6660aaa.exe kat41BC.tmp PID 4852 wrote to memory of 3304 4852 79a8a05cc8390c81d05a519f362fda1cbc145907867c85b2a819c8dcb6660aaa.exe kat41BC.tmp PID 4852 wrote to memory of 3304 4852 79a8a05cc8390c81d05a519f362fda1cbc145907867c85b2a819c8dcb6660aaa.exe kat41BC.tmp PID 4852 wrote to memory of 3304 4852 79a8a05cc8390c81d05a519f362fda1cbc145907867c85b2a819c8dcb6660aaa.exe kat41BC.tmp PID 4852 wrote to memory of 3304 4852 79a8a05cc8390c81d05a519f362fda1cbc145907867c85b2a819c8dcb6660aaa.exe kat41BC.tmp PID 4852 wrote to memory of 3304 4852 79a8a05cc8390c81d05a519f362fda1cbc145907867c85b2a819c8dcb6660aaa.exe kat41BC.tmp PID 4852 wrote to memory of 3304 4852 79a8a05cc8390c81d05a519f362fda1cbc145907867c85b2a819c8dcb6660aaa.exe kat41BC.tmp
Processes
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C:\Users\Admin\AppData\Local\Temp\79a8a05cc8390c81d05a519f362fda1cbc145907867c85b2a819c8dcb6660aaa.exe"C:\Users\Admin\AppData\Local\Temp\79a8a05cc8390c81d05a519f362fda1cbc145907867c85b2a819c8dcb6660aaa.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4852 -
C:\Users\Admin\AppData\Local\Temp\kat41BC.tmpC:\Users\Admin\AppData\Local\Temp\kat41BC.tmp2⤵
- Executes dropped EXE
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
PID:3304
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
861KB
MD566064dbdb70a5eb15ebf3bf65aba254b
SHA10284fd320f99f62aca800fb1251eff4c31ec4ed7
SHA2566a94dbda2dd1edcff2331061d65e1baf09d4861cc7ba590c5ec754f3ac96a795
SHA512b05c6c09ae7372c381fba591c3cb13a69a2451b9d38da1a95aac89413d7438083475d06796acb5440cd6ec65b030c9fa6cbdaa0d2fe91a926bae6499c360f17f