Analysis
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max time kernel
122s -
max time network
127s -
platform
windows7_x64 -
resource
win7-20230712-en -
resource tags
arch:x64arch:x86image:win7-20230712-enlocale:en-usos:windows7-x64system -
submitted
03-08-2023 15:51
Static task
static1
Behavioral task
behavioral1
Sample
45fd36c20df0c6d0bc44a80a1377d379aad5901eb80418c848249d57238a33c5exe_JC.exe
Resource
win7-20230712-en
Behavioral task
behavioral2
Sample
45fd36c20df0c6d0bc44a80a1377d379aad5901eb80418c848249d57238a33c5exe_JC.exe
Resource
win10v2004-20230703-en
General
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Target
45fd36c20df0c6d0bc44a80a1377d379aad5901eb80418c848249d57238a33c5exe_JC.exe
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Size
836KB
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MD5
97f65414b331bda98d55063e56bb4a91
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SHA1
dbd84e5b5a6e191e3c5cf5f74ab67e661a318ecb
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SHA256
45fd36c20df0c6d0bc44a80a1377d379aad5901eb80418c848249d57238a33c5
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SHA512
62f23f53e30581b8adeff86d1fbd71214c27749a99af0ba2a5b1b2959d0c5a9add313ed40ab45837f39e87ae2e6fae08b51988105eea1a98a8f6d93f4192c634
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SSDEEP
24576:F1pppNpppppoOQpppNpppppoOX5u+enW/j5n:F8O7OXXl5
Malware Config
Signatures
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Reads data files stored by FTP clients 2 TTPs
Tries to access configuration files associated with programs like FileZilla.
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Reads user/profile data of local email clients 2 TTPs
Email clients store some user data on disk where infostealers will often target it.
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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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Adds Run key to start application 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-4159544280-4273523227-683900707-1000\Software\Microsoft\Windows\CurrentVersion\Run\yStNrF = "C:\\Users\\Admin\\AppData\\Roaming\\yStNrF\\yStNrF.exe" 45fd36c20df0c6d0bc44a80a1377d379aad5901eb80418c848249d57238a33c5exe_JC.exe -
Looks up external IP address via web service 1 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.
flow ioc 2 api.ipify.org -
Suspicious use of SetThreadContext 1 IoCs
description pid Process procid_target PID 2524 set thread context of 2964 2524 45fd36c20df0c6d0bc44a80a1377d379aad5901eb80418c848249d57238a33c5exe_JC.exe 32 -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Creates scheduled task(s) 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
pid Process 2832 schtasks.exe -
Suspicious behavior: EnumeratesProcesses 3 IoCs
pid Process 2524 45fd36c20df0c6d0bc44a80a1377d379aad5901eb80418c848249d57238a33c5exe_JC.exe 2964 45fd36c20df0c6d0bc44a80a1377d379aad5901eb80418c848249d57238a33c5exe_JC.exe 2964 45fd36c20df0c6d0bc44a80a1377d379aad5901eb80418c848249d57238a33c5exe_JC.exe -
Suspicious use of AdjustPrivilegeToken 2 IoCs
description pid Process Token: SeDebugPrivilege 2524 45fd36c20df0c6d0bc44a80a1377d379aad5901eb80418c848249d57238a33c5exe_JC.exe Token: SeDebugPrivilege 2964 45fd36c20df0c6d0bc44a80a1377d379aad5901eb80418c848249d57238a33c5exe_JC.exe -
Suspicious use of SetWindowsHookEx 1 IoCs
pid Process 2964 45fd36c20df0c6d0bc44a80a1377d379aad5901eb80418c848249d57238a33c5exe_JC.exe -
Suspicious use of WriteProcessMemory 13 IoCs
description pid Process procid_target PID 2524 wrote to memory of 2832 2524 45fd36c20df0c6d0bc44a80a1377d379aad5901eb80418c848249d57238a33c5exe_JC.exe 30 PID 2524 wrote to memory of 2832 2524 45fd36c20df0c6d0bc44a80a1377d379aad5901eb80418c848249d57238a33c5exe_JC.exe 30 PID 2524 wrote to memory of 2832 2524 45fd36c20df0c6d0bc44a80a1377d379aad5901eb80418c848249d57238a33c5exe_JC.exe 30 PID 2524 wrote to memory of 2832 2524 45fd36c20df0c6d0bc44a80a1377d379aad5901eb80418c848249d57238a33c5exe_JC.exe 30 PID 2524 wrote to memory of 2964 2524 45fd36c20df0c6d0bc44a80a1377d379aad5901eb80418c848249d57238a33c5exe_JC.exe 32 PID 2524 wrote to memory of 2964 2524 45fd36c20df0c6d0bc44a80a1377d379aad5901eb80418c848249d57238a33c5exe_JC.exe 32 PID 2524 wrote to memory of 2964 2524 45fd36c20df0c6d0bc44a80a1377d379aad5901eb80418c848249d57238a33c5exe_JC.exe 32 PID 2524 wrote to memory of 2964 2524 45fd36c20df0c6d0bc44a80a1377d379aad5901eb80418c848249d57238a33c5exe_JC.exe 32 PID 2524 wrote to memory of 2964 2524 45fd36c20df0c6d0bc44a80a1377d379aad5901eb80418c848249d57238a33c5exe_JC.exe 32 PID 2524 wrote to memory of 2964 2524 45fd36c20df0c6d0bc44a80a1377d379aad5901eb80418c848249d57238a33c5exe_JC.exe 32 PID 2524 wrote to memory of 2964 2524 45fd36c20df0c6d0bc44a80a1377d379aad5901eb80418c848249d57238a33c5exe_JC.exe 32 PID 2524 wrote to memory of 2964 2524 45fd36c20df0c6d0bc44a80a1377d379aad5901eb80418c848249d57238a33c5exe_JC.exe 32 PID 2524 wrote to memory of 2964 2524 45fd36c20df0c6d0bc44a80a1377d379aad5901eb80418c848249d57238a33c5exe_JC.exe 32
Processes
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C:\Users\Admin\AppData\Local\Temp\45fd36c20df0c6d0bc44a80a1377d379aad5901eb80418c848249d57238a33c5exe_JC.exe"C:\Users\Admin\AppData\Local\Temp\45fd36c20df0c6d0bc44a80a1377d379aad5901eb80418c848249d57238a33c5exe_JC.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2524 -
C:\Windows\SysWOW64\schtasks.exe"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\WxyEYFaoEO" /XML "C:\Users\Admin\AppData\Local\Temp\tmpF2A8.tmp"2⤵
- Creates scheduled task(s)
PID:2832
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C:\Users\Admin\AppData\Local\Temp\45fd36c20df0c6d0bc44a80a1377d379aad5901eb80418c848249d57238a33c5exe_JC.exe"{path}"2⤵
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
PID:2964
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
1KB
MD58a0ea9449a24f69b631e8de503c983f9
SHA116dea7ddbc5c1f91bc9c200b98ace75b852c5a9c
SHA256cb0526853173a7e163adffb102e77d04a5539652cee1613140577e779ce45149
SHA512e9219844d9222e51722c864725d739950163d7395c5698f213cf08a2f1db3592be54d9af5025c79ea18a72dac76b94e55a023925415929432d5fbce440d5dd07