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Analysis
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max time kernel
151s -
max time network
157s -
platform
windows10-2004_x64 -
resource
win10v2004-20231215-en -
resource tags
arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system -
submitted
29/12/2023, 23:21
Static task
static1
Behavioral task
behavioral1
Sample
06c6fa9558585147c13a580261fc9d18.dll
Resource
win7-20231129-en
Behavioral task
behavioral2
Sample
06c6fa9558585147c13a580261fc9d18.dll
Resource
win10v2004-20231215-en
General
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Target
06c6fa9558585147c13a580261fc9d18.dll
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Size
33KB
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MD5
06c6fa9558585147c13a580261fc9d18
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SHA1
2181bb51dedc730da900318cbab45d37ff9be97d
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SHA256
2b1e8c69cba6382ac3f62dc217810640eaf414830dc30c1862321a0379f091f1
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SHA512
e88458dbd8f46e199e1f80e2443c8688f0134d28efdc0466b4de6a37d0831e4f59d7afd4bc9d79f91aa85c3c66867fc903d89af2d232cfda7798b5b2c5f8cafd
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SSDEEP
384:CsfaKYmTz9Wmn+RDwVXtUAfTvxTP3oxX9BkLyi3BYoyxqFbHqT3CMgIwbKbu:JhNTzsm+SFTZUxtBkp3BYooIu0IdC
Malware Config
Signatures
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Loads dropped DLL 3 IoCs
pid Process 2736 rundll32.exe 2736 rundll32.exe 1212 rundll32.exe -
Adds Run key to start application 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\MSServer = "rundll32.exe C:\\Windows\\system32\\rqRIxvTM.dll,#1" rundll32.exe -
Drops file in System32 directory 2 IoCs
description ioc Process File opened for modification C:\Windows\SysWOW64\rqRIxvTM.dll rundll32.exe File created C:\Windows\SysWOW64\rqRIxvTM.dll rundll32.exe -
Modifies registry class 4 IoCs
description ioc Process Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{A596175D-BBC7-476A-A152-FBA652B64505} rundll32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{A596175D-BBC7-476A-A152-FBA652B64505}\InprocServer32 rundll32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{A596175D-BBC7-476A-A152-FBA652B64505}\InprocServer32\ = "C:\\Windows\\SysWow64\\rqRIxvTM.dll" rundll32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{A596175D-BBC7-476A-A152-FBA652B64505}\InprocServer32\ThreadingModel = "Both" rundll32.exe -
Suspicious behavior: EnumeratesProcesses 64 IoCs
pid Process 2736 rundll32.exe 2736 rundll32.exe 1212 rundll32.exe 1212 rundll32.exe 1212 rundll32.exe 1212 rundll32.exe 1212 rundll32.exe 1212 rundll32.exe 1212 rundll32.exe 1212 rundll32.exe 1212 rundll32.exe 1212 rundll32.exe 1212 rundll32.exe 1212 rundll32.exe 1212 rundll32.exe 1212 rundll32.exe 1212 rundll32.exe 1212 rundll32.exe 1212 rundll32.exe 1212 rundll32.exe 1212 rundll32.exe 1212 rundll32.exe 1212 rundll32.exe 1212 rundll32.exe 1212 rundll32.exe 1212 rundll32.exe 1212 rundll32.exe 1212 rundll32.exe 1212 rundll32.exe 1212 rundll32.exe 1212 rundll32.exe 1212 rundll32.exe 1212 rundll32.exe 1212 rundll32.exe 1212 rundll32.exe 1212 rundll32.exe 1212 rundll32.exe 1212 rundll32.exe 1212 rundll32.exe 1212 rundll32.exe 1212 rundll32.exe 1212 rundll32.exe 1212 rundll32.exe 1212 rundll32.exe 1212 rundll32.exe 1212 rundll32.exe 1212 rundll32.exe 1212 rundll32.exe 1212 rundll32.exe 1212 rundll32.exe 1212 rundll32.exe 1212 rundll32.exe 1212 rundll32.exe 1212 rundll32.exe 1212 rundll32.exe 1212 rundll32.exe 1212 rundll32.exe 1212 rundll32.exe 1212 rundll32.exe 1212 rundll32.exe 1212 rundll32.exe 1212 rundll32.exe 1212 rundll32.exe 1212 rundll32.exe -
Suspicious behavior: RenamesItself 1 IoCs
pid Process 2736 rundll32.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
description pid Process Token: SeDebugPrivilege 2736 rundll32.exe -
Suspicious use of SetWindowsHookEx 1 IoCs
pid Process 2736 rundll32.exe -
Suspicious use of WriteProcessMemory 7 IoCs
description pid Process procid_target PID 2868 wrote to memory of 2736 2868 rundll32.exe 70 PID 2868 wrote to memory of 2736 2868 rundll32.exe 70 PID 2868 wrote to memory of 2736 2868 rundll32.exe 70 PID 2736 wrote to memory of 612 2736 rundll32.exe 4 PID 2736 wrote to memory of 1212 2736 rundll32.exe 100 PID 2736 wrote to memory of 1212 2736 rundll32.exe 100 PID 2736 wrote to memory of 1212 2736 rundll32.exe 100
Processes
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C:\Windows\system32\winlogon.exewinlogon.exe1⤵PID:612
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C:\Windows\system32\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\06c6fa9558585147c13a580261fc9d18.dll,#11⤵
- Suspicious use of WriteProcessMemory
PID:2868 -
C:\Windows\SysWOW64\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\06c6fa9558585147c13a580261fc9d18.dll,#12⤵
- Loads dropped DLL
- Drops file in System32 directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: RenamesItself
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2736 -
C:\Windows\SysWOW64\rundll32.exerundll32.exe C:\Windows\system32\rqRIxvTM.dll,a3⤵
- Loads dropped DLL
- Adds Run key to start application
- Modifies registry class
- Suspicious behavior: EnumeratesProcesses
PID:1212
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
33KB
MD506c6fa9558585147c13a580261fc9d18
SHA12181bb51dedc730da900318cbab45d37ff9be97d
SHA2562b1e8c69cba6382ac3f62dc217810640eaf414830dc30c1862321a0379f091f1
SHA512e88458dbd8f46e199e1f80e2443c8688f0134d28efdc0466b4de6a37d0831e4f59d7afd4bc9d79f91aa85c3c66867fc903d89af2d232cfda7798b5b2c5f8cafd