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Analysis
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max time kernel
152s -
max time network
98s -
platform
windows7_x64 -
resource
win7-20220812-en -
resource tags
arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system -
submitted
11/10/2022, 09:05
Behavioral task
behavioral1
Sample
39bff9aa1a4551fe7c27316f4fb3bfe0634264901740e64204ae23d6146cebf1.exe
Resource
win7-20220812-en
Behavioral task
behavioral2
Sample
39bff9aa1a4551fe7c27316f4fb3bfe0634264901740e64204ae23d6146cebf1.exe
Resource
win10v2004-20220812-en
General
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Target
39bff9aa1a4551fe7c27316f4fb3bfe0634264901740e64204ae23d6146cebf1.exe
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Size
237KB
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MD5
17e2fcdbaf0724579c546d6ff79f33a2
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SHA1
5fef56eee5488758b969685092213a42cb775463
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SHA256
39bff9aa1a4551fe7c27316f4fb3bfe0634264901740e64204ae23d6146cebf1
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SHA512
0799ee12f6823f2e159adbb9815eabb45e97e474d518ce45305490708caa174a683d9f102d485caf04e8ff9bcd8141869ab3fd2d2b9be0c56ebac2644bbd0366
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SSDEEP
3072:TGvo6giwpW9DGD2VdKvY/gIg/CtTIuOmxkiozXgeXdHwTBf4Wgczc+0ie/53H:TG377xS2Vp2CeiorXdwTBgWx4/53H
Malware Config
Signatures
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ModiLoader, DBatLoader
ModiLoader is a Delphi loader that misuses cloud services to download other malicious families.
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description ioc Process Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0" mstwain32.exe -
ModiLoader Second Stage 1 IoCs
resource yara_rule behavioral1/files/0x00140000000054ab-56.dat modiloader_stage2 -
Executes dropped EXE 1 IoCs
pid Process 1836 mstwain32.exe -
Adds Run key to start application 2 TTPs 2 IoCs
description ioc Process Key created \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\ mstwain32.exe Set value (str) \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run\mstwain32 = "C:\\Windows\\mstwain32.exe" mstwain32.exe -
description ioc Process Key value queried \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA 39bff9aa1a4551fe7c27316f4fb3bfe0634264901740e64204ae23d6146cebf1.exe Key value queried \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA mstwain32.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0" mstwain32.exe -
Drops file in Windows directory 3 IoCs
description ioc Process File opened for modification C:\Windows\mstwain32.exe 39bff9aa1a4551fe7c27316f4fb3bfe0634264901740e64204ae23d6146cebf1.exe File created C:\Windows\ntdtcstp.dll mstwain32.exe File created C:\Windows\mstwain32.exe 39bff9aa1a4551fe7c27316f4fb3bfe0634264901740e64204ae23d6146cebf1.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
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Suspicious use of AdjustPrivilegeToken 5 IoCs
description pid Process Token: SeDebugPrivilege 916 39bff9aa1a4551fe7c27316f4fb3bfe0634264901740e64204ae23d6146cebf1.exe Token: SeBackupPrivilege 1304 vssvc.exe Token: SeRestorePrivilege 1304 vssvc.exe Token: SeAuditPrivilege 1304 vssvc.exe Token: SeDebugPrivilege 1836 mstwain32.exe -
Suspicious use of SetWindowsHookEx 1 IoCs
pid Process 1836 mstwain32.exe -
Suspicious use of WriteProcessMemory 4 IoCs
description pid Process procid_target PID 916 wrote to memory of 1836 916 39bff9aa1a4551fe7c27316f4fb3bfe0634264901740e64204ae23d6146cebf1.exe 31 PID 916 wrote to memory of 1836 916 39bff9aa1a4551fe7c27316f4fb3bfe0634264901740e64204ae23d6146cebf1.exe 31 PID 916 wrote to memory of 1836 916 39bff9aa1a4551fe7c27316f4fb3bfe0634264901740e64204ae23d6146cebf1.exe 31 PID 916 wrote to memory of 1836 916 39bff9aa1a4551fe7c27316f4fb3bfe0634264901740e64204ae23d6146cebf1.exe 31 -
System policy modification 1 TTPs 1 IoCs
description ioc Process Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0" mstwain32.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\39bff9aa1a4551fe7c27316f4fb3bfe0634264901740e64204ae23d6146cebf1.exe"C:\Users\Admin\AppData\Local\Temp\39bff9aa1a4551fe7c27316f4fb3bfe0634264901740e64204ae23d6146cebf1.exe"1⤵
- Checks whether UAC is enabled
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:916 -
C:\Windows\mstwain32.exe"C:\Windows\mstwain32.exe"2⤵
- UAC bypass
- Executes dropped EXE
- Adds Run key to start application
- Checks whether UAC is enabled
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- System policy modification
PID:1836
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C:\Windows\system32\vssvc.exeC:\Windows\system32\vssvc.exe1⤵
- Suspicious use of AdjustPrivilegeToken
PID:1304
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
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Filesize
237KB
MD517e2fcdbaf0724579c546d6ff79f33a2
SHA15fef56eee5488758b969685092213a42cb775463
SHA25639bff9aa1a4551fe7c27316f4fb3bfe0634264901740e64204ae23d6146cebf1
SHA5120799ee12f6823f2e159adbb9815eabb45e97e474d518ce45305490708caa174a683d9f102d485caf04e8ff9bcd8141869ab3fd2d2b9be0c56ebac2644bbd0366