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Analysis
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max time kernel
118s -
max time network
121s -
platform
windows7_x64 -
resource
win7-20231020-en -
resource tags
arch:x64arch:x86image:win7-20231020-enlocale:en-usos:windows7-x64system -
submitted
22/10/2023, 21:26
Static task
static1
Behavioral task
behavioral1
Sample
file.exe
Resource
win7-20231020-en
General
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Target
file.exe
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Size
179KB
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MD5
47f987b03e24da52bfebfde931100fd0
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SHA1
9e3bab845efc3c82d28f016582dd2261b1213109
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SHA256
3ec9c6f702632d0576786567b7cb5756a7de4c77e200dd0b744dc0e32f3e5ddf
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SHA512
02f7bec413f6288a54ee1390a623e24f0831e4497fbf83d505af2c31898ad6829751833c97e2ec604fd055eed093be14abf5a887766cc8150a1b752c6e6e66c7
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SSDEEP
3072:9fyBN6fnr6AMsGrPxVCfRF7XN8wZAgjNyeaEBX:9O2+AM/rPfoRNXSwZbjYe
Malware Config
Extracted
stealc
http://wy�ttsebastian.top
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url_path
/e9c345fc99a4e67e.php
Signatures
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Downloads MZ/PE file
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Deletes itself 1 IoCs
pid Process 2184 cmd.exe -
Loads dropped DLL 2 IoCs
pid Process 2560 file.exe 2560 file.exe -
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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Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
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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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Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Checks processor information in registry 2 TTPs 2 IoCs
Processor information is often read in order to detect sandboxing environments.
description ioc Process Key opened \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0 file.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString file.exe -
Delays execution with timeout.exe 1 IoCs
pid Process 1968 timeout.exe -
Suspicious behavior: EnumeratesProcesses 1 IoCs
pid Process 2560 file.exe -
Suspicious use of WriteProcessMemory 8 IoCs
description pid Process procid_target PID 2560 wrote to memory of 2184 2560 file.exe 31 PID 2560 wrote to memory of 2184 2560 file.exe 31 PID 2560 wrote to memory of 2184 2560 file.exe 31 PID 2560 wrote to memory of 2184 2560 file.exe 31 PID 2184 wrote to memory of 1968 2184 cmd.exe 33 PID 2184 wrote to memory of 1968 2184 cmd.exe 33 PID 2184 wrote to memory of 1968 2184 cmd.exe 33 PID 2184 wrote to memory of 1968 2184 cmd.exe 33
Processes
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C:\Users\Admin\AppData\Local\Temp\file.exe"C:\Users\Admin\AppData\Local\Temp\file.exe"1⤵
- Loads dropped DLL
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:2560 -
C:\Windows\SysWOW64\cmd.exe"C:\Windows\system32\cmd.exe" /c timeout /t 5 & del /f /q "C:\Users\Admin\AppData\Local\Temp\file.exe" & del "C:\ProgramData\*.dll"" & exit2⤵
- Deletes itself
- Suspicious use of WriteProcessMemory
PID:2184 -
C:\Windows\SysWOW64\timeout.exetimeout /t 53⤵
- Delays execution with timeout.exe
PID:1968
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
593KB
MD5c8fd9be83bc728cc04beffafc2907fe9
SHA195ab9f701e0024cedfbd312bcfe4e726744c4f2e
SHA256ba06a6ee0b15f5be5c4e67782eec8b521e36c107a329093ec400fe0404eb196a
SHA512fbb446f4a27ef510e616caad52945d6c9cc1fd063812c41947e579ec2b54df57c6dc46237ded80fca5847f38cbe1747a6c66a13e2c8c19c664a72be35eb8b040
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Filesize
2.0MB
MD51cc453cdf74f31e4d913ff9c10acdde2
SHA16e85eae544d6e965f15fa5c39700fa7202f3aafe
SHA256ac5c92fe6c51cfa742e475215b83b3e11a4379820043263bf50d4068686c6fa5
SHA512dd9ff4e06b00dc831439bab11c10e9b2ae864ea6e780d3835ea7468818f35439f352ef137da111efcdf2bb6465f6ca486719451bf6cf32c6a4420a56b1d64571