Analysis
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max time kernel
44s -
max time network
49s -
platform
windows7_x64 -
resource
win7-20220901-en -
resource tags
arch:x64arch:x86image:win7-20220901-enlocale:en-usos:windows7-x64system -
submitted
02-10-2022 10:09
Static task
static1
Behavioral task
behavioral1
Sample
def70f9266363ea88b8c3a7a47084b041aa6208f9e7c335be3c08bf341c746b0.exe
Resource
win7-20220901-en
Behavioral task
behavioral2
Sample
def70f9266363ea88b8c3a7a47084b041aa6208f9e7c335be3c08bf341c746b0.exe
Resource
win10v2004-20220812-en
General
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Target
def70f9266363ea88b8c3a7a47084b041aa6208f9e7c335be3c08bf341c746b0.exe
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Size
40KB
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MD5
5718e56b11e5bfa6bfd6a62b5656d1c0
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SHA1
81bc4ab540b5613613284521789ab89ee4f4df5b
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SHA256
def70f9266363ea88b8c3a7a47084b041aa6208f9e7c335be3c08bf341c746b0
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SHA512
6a8781089239a3e50ad8e5c205e10cc6c9441302b3ae50034d779704c8706b62b1e62701b40faa904e25ef842d15eb2a215ee5c2954ef636cd6cee936dba57e3
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SSDEEP
768:/TO+hvTGEfCxzjSGBcvZZrt4qWhv4Co57BNdOviIqmKtwpjJFg7a:/iu7AFkxeyCo5VXODFg7a
Malware Config
Signatures
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Possible privilege escalation attempt 2 IoCs
Processes:
takeown.exeicacls.exepid process 1688 takeown.exe 1160 icacls.exe -
Modifies file permissions 1 TTPs 2 IoCs
Processes:
takeown.exeicacls.exepid process 1688 takeown.exe 1160 icacls.exe -
Adds Run key to start application 2 TTPs 2 IoCs
Processes:
def70f9266363ea88b8c3a7a47084b041aa6208f9e7c335be3c08bf341c746b0.exedescription ioc process Key created \REGISTRY\MACHINE\Software\Wow6432Node\Microsoft\Windows\CurrentVersion\Run def70f9266363ea88b8c3a7a47084b041aa6208f9e7c335be3c08bf341c746b0.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\dox = "C:\\Windows\\system32\\mtesy.exe" def70f9266363ea88b8c3a7a47084b041aa6208f9e7c335be3c08bf341c746b0.exe -
Drops file in System32 directory 2 IoCs
Processes:
def70f9266363ea88b8c3a7a47084b041aa6208f9e7c335be3c08bf341c746b0.exedescription ioc process File created C:\Windows\SysWOW64\mtesy.exe def70f9266363ea88b8c3a7a47084b041aa6208f9e7c335be3c08bf341c746b0.exe File opened for modification C:\Windows\SysWOW64\mtesy.exe def70f9266363ea88b8c3a7a47084b041aa6208f9e7c335be3c08bf341c746b0.exe -
Suspicious use of SetWindowsHookEx 1 IoCs
Processes:
def70f9266363ea88b8c3a7a47084b041aa6208f9e7c335be3c08bf341c746b0.exepid process 1492 def70f9266363ea88b8c3a7a47084b041aa6208f9e7c335be3c08bf341c746b0.exe -
Suspicious use of WriteProcessMemory 8 IoCs
Processes:
def70f9266363ea88b8c3a7a47084b041aa6208f9e7c335be3c08bf341c746b0.exedescription pid process target process PID 1492 wrote to memory of 1688 1492 def70f9266363ea88b8c3a7a47084b041aa6208f9e7c335be3c08bf341c746b0.exe takeown.exe PID 1492 wrote to memory of 1688 1492 def70f9266363ea88b8c3a7a47084b041aa6208f9e7c335be3c08bf341c746b0.exe takeown.exe PID 1492 wrote to memory of 1688 1492 def70f9266363ea88b8c3a7a47084b041aa6208f9e7c335be3c08bf341c746b0.exe takeown.exe PID 1492 wrote to memory of 1688 1492 def70f9266363ea88b8c3a7a47084b041aa6208f9e7c335be3c08bf341c746b0.exe takeown.exe PID 1492 wrote to memory of 1160 1492 def70f9266363ea88b8c3a7a47084b041aa6208f9e7c335be3c08bf341c746b0.exe icacls.exe PID 1492 wrote to memory of 1160 1492 def70f9266363ea88b8c3a7a47084b041aa6208f9e7c335be3c08bf341c746b0.exe icacls.exe PID 1492 wrote to memory of 1160 1492 def70f9266363ea88b8c3a7a47084b041aa6208f9e7c335be3c08bf341c746b0.exe icacls.exe PID 1492 wrote to memory of 1160 1492 def70f9266363ea88b8c3a7a47084b041aa6208f9e7c335be3c08bf341c746b0.exe icacls.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\def70f9266363ea88b8c3a7a47084b041aa6208f9e7c335be3c08bf341c746b0.exe"C:\Users\Admin\AppData\Local\Temp\def70f9266363ea88b8c3a7a47084b041aa6208f9e7c335be3c08bf341c746b0.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\mtesy.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\mtesy.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\mtesy.exeFilesize
40KB
MD55718e56b11e5bfa6bfd6a62b5656d1c0
SHA181bc4ab540b5613613284521789ab89ee4f4df5b
SHA256def70f9266363ea88b8c3a7a47084b041aa6208f9e7c335be3c08bf341c746b0
SHA5126a8781089239a3e50ad8e5c205e10cc6c9441302b3ae50034d779704c8706b62b1e62701b40faa904e25ef842d15eb2a215ee5c2954ef636cd6cee936dba57e3
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memory/1160-57-0x0000000000000000-mapping.dmp
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memory/1688-56-0x0000000000000000-mapping.dmp