Analysis
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max time kernel
45s -
max time network
49s -
platform
windows7_x64 -
resource
win7-20220812-en -
resource tags
arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system -
submitted
19-11-2022 07:24
Static task
static1
Behavioral task
behavioral1
Sample
6e85e093f460673b937a31c0e42946768bc808efee649872437d37403385afd0.exe
Resource
win7-20220812-en
Behavioral task
behavioral2
Sample
6e85e093f460673b937a31c0e42946768bc808efee649872437d37403385afd0.exe
Resource
win10v2004-20221111-en
General
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Target
6e85e093f460673b937a31c0e42946768bc808efee649872437d37403385afd0.exe
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Size
40KB
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MD5
39e06fa3fe6139e3e5a6ed304b24fef1
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SHA1
37cf399df7c64470ee93d3fe93d71aa0b823ad73
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SHA256
6e85e093f460673b937a31c0e42946768bc808efee649872437d37403385afd0
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SHA512
37ed818cc28645184f6354be6152d222b165ff85de6e6bb708945da9122f5bc8ae1eb07818004e8d5391fd3310a1878223a57427f00e70e14a8db20bf33781fc
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SSDEEP
768:/LzFu+aS/kEI6w9yBfey0/RklFRCfq6RB:/Lgo9w9yZX0/KFRCfq6RB
Malware Config
Signatures
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Possible privilege escalation attempt 2 IoCs
Processes:
icacls.exetakeown.exepid process 936 icacls.exe 1756 takeown.exe -
Modifies file permissions 1 TTPs 2 IoCs
Processes:
takeown.exeicacls.exepid process 1756 takeown.exe 936 icacls.exe -
Adds Run key to start application 2 TTPs 2 IoCs
Processes:
6e85e093f460673b937a31c0e42946768bc808efee649872437d37403385afd0.exedescription ioc process Key created \REGISTRY\MACHINE\Software\Wow6432Node\Microsoft\Windows\CurrentVersion\Run 6e85e093f460673b937a31c0e42946768bc808efee649872437d37403385afd0.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\oFE = "C:\\Windows\\system32\\ytml.exe" 6e85e093f460673b937a31c0e42946768bc808efee649872437d37403385afd0.exe -
Drops file in System32 directory 2 IoCs
Processes:
6e85e093f460673b937a31c0e42946768bc808efee649872437d37403385afd0.exedescription ioc process File opened for modification C:\Windows\SysWOW64\ytml.exe 6e85e093f460673b937a31c0e42946768bc808efee649872437d37403385afd0.exe File created C:\Windows\SysWOW64\ytml.exe 6e85e093f460673b937a31c0e42946768bc808efee649872437d37403385afd0.exe -
Suspicious use of SetWindowsHookEx 1 IoCs
Processes:
6e85e093f460673b937a31c0e42946768bc808efee649872437d37403385afd0.exepid process 2020 6e85e093f460673b937a31c0e42946768bc808efee649872437d37403385afd0.exe -
Suspicious use of WriteProcessMemory 8 IoCs
Processes:
6e85e093f460673b937a31c0e42946768bc808efee649872437d37403385afd0.exedescription pid process target process PID 2020 wrote to memory of 1756 2020 6e85e093f460673b937a31c0e42946768bc808efee649872437d37403385afd0.exe takeown.exe PID 2020 wrote to memory of 1756 2020 6e85e093f460673b937a31c0e42946768bc808efee649872437d37403385afd0.exe takeown.exe PID 2020 wrote to memory of 1756 2020 6e85e093f460673b937a31c0e42946768bc808efee649872437d37403385afd0.exe takeown.exe PID 2020 wrote to memory of 1756 2020 6e85e093f460673b937a31c0e42946768bc808efee649872437d37403385afd0.exe takeown.exe PID 2020 wrote to memory of 936 2020 6e85e093f460673b937a31c0e42946768bc808efee649872437d37403385afd0.exe icacls.exe PID 2020 wrote to memory of 936 2020 6e85e093f460673b937a31c0e42946768bc808efee649872437d37403385afd0.exe icacls.exe PID 2020 wrote to memory of 936 2020 6e85e093f460673b937a31c0e42946768bc808efee649872437d37403385afd0.exe icacls.exe PID 2020 wrote to memory of 936 2020 6e85e093f460673b937a31c0e42946768bc808efee649872437d37403385afd0.exe icacls.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\6e85e093f460673b937a31c0e42946768bc808efee649872437d37403385afd0.exe"C:\Users\Admin\AppData\Local\Temp\6e85e093f460673b937a31c0e42946768bc808efee649872437d37403385afd0.exe"1⤵
- Adds Run key to start application
- Drops file in System32 directory
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\takeown.exeC:\Windows\system32\takeown.exe /f "C:\Windows\system32\ytml.exe"2⤵
- Possible privilege escalation attempt
- Modifies file permissions
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C:\Windows\SysWOW64\icacls.exeC:\Windows\system32\icacls.exe "C:\Windows\system32\ytml.exe" /grant Users:F2⤵
- Possible privilege escalation attempt
- Modifies file permissions
Network
MITRE ATT&CK Matrix ATT&CK v6
Replay Monitor
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Downloads
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C:\Windows\SysWOW64\ytml.exeFilesize
40KB
MD539e06fa3fe6139e3e5a6ed304b24fef1
SHA137cf399df7c64470ee93d3fe93d71aa0b823ad73
SHA2566e85e093f460673b937a31c0e42946768bc808efee649872437d37403385afd0
SHA51237ed818cc28645184f6354be6152d222b165ff85de6e6bb708945da9122f5bc8ae1eb07818004e8d5391fd3310a1878223a57427f00e70e14a8db20bf33781fc
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memory/936-57-0x0000000000000000-mapping.dmp
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memory/1756-56-0x0000000000000000-mapping.dmp