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Analysis
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max time kernel
151s -
max time network
48s -
platform
windows7_x64 -
resource
win7-20220812-en -
resource tags
arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system -
submitted
02/12/2022, 21:28
Static task
static1
Behavioral task
behavioral1
Sample
73b9918ab31e9e2f32c766ab84032563608c734ed434878257bd1512fe11e947.exe
Resource
win7-20220812-en
windows7-x64
8 signatures
150 seconds
Behavioral task
behavioral2
Sample
73b9918ab31e9e2f32c766ab84032563608c734ed434878257bd1512fe11e947.exe
Resource
win10v2004-20220812-en
windows10-2004-x64
8 signatures
150 seconds
General
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Target
73b9918ab31e9e2f32c766ab84032563608c734ed434878257bd1512fe11e947.exe
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Size
100KB
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MD5
d2c41cd8ad89eebb63b469a7d8e7c5b8
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SHA1
d76a75d40543282c68d8697e3bcf9d636f2c3b31
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SHA256
73b9918ab31e9e2f32c766ab84032563608c734ed434878257bd1512fe11e947
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SHA512
6026118b71e439e23c143a512f9a22eb96080778f22e4f2b6159ccfe283e171186200abe75fc8102538281502209c718d0fd67d51e48830d8bfd57a8587bf3cf
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SSDEEP
1536:F3tGR82NTzw82MGAc4ohrPXo+73Rez8b0Sy2NIjnZMd:4wcurPX7C2Cned
Score
10/10
Malware Config
Signatures
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Modifies visiblity of hidden/system files in Explorer 2 TTPs 2 IoCs
description ioc Process Set value (int) \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0" 73b9918ab31e9e2f32c766ab84032563608c734ed434878257bd1512fe11e947.exe Set value (int) \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0" vunaf.exe -
Executes dropped EXE 1 IoCs
pid Process 944 vunaf.exe -
Loads dropped DLL 2 IoCs
pid Process 1932 73b9918ab31e9e2f32c766ab84032563608c734ed434878257bd1512fe11e947.exe 1932 73b9918ab31e9e2f32c766ab84032563608c734ed434878257bd1512fe11e947.exe -
Adds Run key to start application 2 TTPs 53 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run\vunaf = "C:\\Users\\Admin\\vunaf.exe /D" vunaf.exe Set value (str) \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run\vunaf = "C:\\Users\\Admin\\vunaf.exe /k" vunaf.exe Set value (str) \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run\vunaf = "C:\\Users\\Admin\\vunaf.exe /C" vunaf.exe Set value (str) \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run\vunaf = "C:\\Users\\Admin\\vunaf.exe /t" vunaf.exe Set value (str) \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run\vunaf = "C:\\Users\\Admin\\vunaf.exe /y" vunaf.exe Set value (str) \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run\vunaf = "C:\\Users\\Admin\\vunaf.exe /o" vunaf.exe Set value (str) \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run\vunaf = "C:\\Users\\Admin\\vunaf.exe /b" vunaf.exe Set value (str) \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run\vunaf = "C:\\Users\\Admin\\vunaf.exe /G" vunaf.exe Set value (str) \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run\vunaf = "C:\\Users\\Admin\\vunaf.exe /Z" vunaf.exe Set value (str) \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run\vunaf = "C:\\Users\\Admin\\vunaf.exe /X" vunaf.exe Set value (str) \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run\vunaf = "C:\\Users\\Admin\\vunaf.exe /Q" vunaf.exe Set value (str) \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run\vunaf = "C:\\Users\\Admin\\vunaf.exe /d" vunaf.exe Set value (str) \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run\vunaf = "C:\\Users\\Admin\\vunaf.exe /q" vunaf.exe Key created \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run\ vunaf.exe Set value (str) \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run\vunaf = "C:\\Users\\Admin\\vunaf.exe /f" vunaf.exe Set value (str) \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run\vunaf = "C:\\Users\\Admin\\vunaf.exe /T" vunaf.exe Set value (str) \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run\vunaf = "C:\\Users\\Admin\\vunaf.exe /Y" vunaf.exe Set value (str) \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run\vunaf = "C:\\Users\\Admin\\vunaf.exe /V" vunaf.exe Set value (str) \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run\vunaf = "C:\\Users\\Admin\\vunaf.exe /W" vunaf.exe Set value (str) \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run\vunaf = "C:\\Users\\Admin\\vunaf.exe /p" vunaf.exe Set value (str) \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run\vunaf = "C:\\Users\\Admin\\vunaf.exe /S" vunaf.exe Set value (str) \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run\vunaf = "C:\\Users\\Admin\\vunaf.exe /e" vunaf.exe Set value (str) \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run\vunaf = "C:\\Users\\Admin\\vunaf.exe /l" vunaf.exe Set value (str) \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run\vunaf = "C:\\Users\\Admin\\vunaf.exe /n" vunaf.exe Set value (str) \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run\vunaf = "C:\\Users\\Admin\\vunaf.exe /H" vunaf.exe Set value (str) \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run\vunaf = "C:\\Users\\Admin\\vunaf.exe /s" vunaf.exe Set value (str) \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run\vunaf = "C:\\Users\\Admin\\vunaf.exe /P" vunaf.exe Set value (str) \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run\vunaf = "C:\\Users\\Admin\\vunaf.exe /K" vunaf.exe Set value (str) \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run\vunaf = "C:\\Users\\Admin\\vunaf.exe /U" vunaf.exe Set value (str) \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run\vunaf = "C:\\Users\\Admin\\vunaf.exe /j" vunaf.exe Set value (str) \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run\vunaf = "C:\\Users\\Admin\\vunaf.exe /g" vunaf.exe Set value (str) \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run\vunaf = "C:\\Users\\Admin\\vunaf.exe /R" vunaf.exe Set value (str) \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run\vunaf = "C:\\Users\\Admin\\vunaf.exe /I" vunaf.exe Set value (str) \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run\vunaf = "C:\\Users\\Admin\\vunaf.exe /d" 73b9918ab31e9e2f32c766ab84032563608c734ed434878257bd1512fe11e947.exe Set value (str) \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run\vunaf = "C:\\Users\\Admin\\vunaf.exe /A" vunaf.exe Set value (str) \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run\vunaf = "C:\\Users\\Admin\\vunaf.exe /u" vunaf.exe Set value (str) \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run\vunaf = "C:\\Users\\Admin\\vunaf.exe /E" vunaf.exe Set value (str) \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run\vunaf = "C:\\Users\\Admin\\vunaf.exe /z" vunaf.exe Set value (str) \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run\vunaf = "C:\\Users\\Admin\\vunaf.exe /F" vunaf.exe Set value (str) \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run\vunaf = "C:\\Users\\Admin\\vunaf.exe /i" vunaf.exe Set value (str) \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run\vunaf = "C:\\Users\\Admin\\vunaf.exe /B" vunaf.exe Set value (str) \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run\vunaf = "C:\\Users\\Admin\\vunaf.exe /x" vunaf.exe Set value (str) \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run\vunaf = "C:\\Users\\Admin\\vunaf.exe /h" vunaf.exe Set value (str) \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run\vunaf = "C:\\Users\\Admin\\vunaf.exe /w" vunaf.exe Set value (str) \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run\vunaf = "C:\\Users\\Admin\\vunaf.exe /N" vunaf.exe Key created \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run\ 73b9918ab31e9e2f32c766ab84032563608c734ed434878257bd1512fe11e947.exe Set value (str) \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run\vunaf = "C:\\Users\\Admin\\vunaf.exe /r" vunaf.exe Set value (str) \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run\vunaf = "C:\\Users\\Admin\\vunaf.exe /J" vunaf.exe Set value (str) \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run\vunaf = "C:\\Users\\Admin\\vunaf.exe /m" vunaf.exe Set value (str) \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run\vunaf = "C:\\Users\\Admin\\vunaf.exe /v" vunaf.exe Set value (str) \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run\vunaf = "C:\\Users\\Admin\\vunaf.exe /O" vunaf.exe Set value (str) \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run\vunaf = "C:\\Users\\Admin\\vunaf.exe /M" vunaf.exe Set value (str) \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run\vunaf = "C:\\Users\\Admin\\vunaf.exe /c" vunaf.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
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Suspicious behavior: EnumeratesProcesses 64 IoCs
pid Process 1932 73b9918ab31e9e2f32c766ab84032563608c734ed434878257bd1512fe11e947.exe 944 vunaf.exe 944 vunaf.exe 944 vunaf.exe 944 vunaf.exe 944 vunaf.exe 944 vunaf.exe 944 vunaf.exe 944 vunaf.exe 944 vunaf.exe 944 vunaf.exe 944 vunaf.exe 944 vunaf.exe 944 vunaf.exe 944 vunaf.exe 944 vunaf.exe 944 vunaf.exe 944 vunaf.exe 944 vunaf.exe 944 vunaf.exe 944 vunaf.exe 944 vunaf.exe 944 vunaf.exe 944 vunaf.exe 944 vunaf.exe 944 vunaf.exe 944 vunaf.exe 944 vunaf.exe 944 vunaf.exe 944 vunaf.exe 944 vunaf.exe 944 vunaf.exe 944 vunaf.exe 944 vunaf.exe 944 vunaf.exe 944 vunaf.exe 944 vunaf.exe 944 vunaf.exe 944 vunaf.exe 944 vunaf.exe 944 vunaf.exe 944 vunaf.exe 944 vunaf.exe 944 vunaf.exe 944 vunaf.exe 944 vunaf.exe 944 vunaf.exe 944 vunaf.exe 944 vunaf.exe 944 vunaf.exe 944 vunaf.exe 944 vunaf.exe 944 vunaf.exe 944 vunaf.exe 944 vunaf.exe 944 vunaf.exe 944 vunaf.exe 944 vunaf.exe 944 vunaf.exe 944 vunaf.exe 944 vunaf.exe 944 vunaf.exe 944 vunaf.exe 944 vunaf.exe -
Suspicious use of SetWindowsHookEx 2 IoCs
pid Process 1932 73b9918ab31e9e2f32c766ab84032563608c734ed434878257bd1512fe11e947.exe 944 vunaf.exe -
Suspicious use of WriteProcessMemory 4 IoCs
description pid Process procid_target PID 1932 wrote to memory of 944 1932 73b9918ab31e9e2f32c766ab84032563608c734ed434878257bd1512fe11e947.exe 28 PID 1932 wrote to memory of 944 1932 73b9918ab31e9e2f32c766ab84032563608c734ed434878257bd1512fe11e947.exe 28 PID 1932 wrote to memory of 944 1932 73b9918ab31e9e2f32c766ab84032563608c734ed434878257bd1512fe11e947.exe 28 PID 1932 wrote to memory of 944 1932 73b9918ab31e9e2f32c766ab84032563608c734ed434878257bd1512fe11e947.exe 28
Processes
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C:\Users\Admin\AppData\Local\Temp\73b9918ab31e9e2f32c766ab84032563608c734ed434878257bd1512fe11e947.exe"C:\Users\Admin\AppData\Local\Temp\73b9918ab31e9e2f32c766ab84032563608c734ed434878257bd1512fe11e947.exe"1⤵
- Modifies visiblity of hidden/system files in Explorer
- Loads dropped DLL
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1932 -
C:\Users\Admin\vunaf.exe"C:\Users\Admin\vunaf.exe"2⤵
- Modifies visiblity of hidden/system files in Explorer
- Executes dropped EXE
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetWindowsHookEx
PID:944
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
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Filesize
100KB
MD55c9dc41afcc7163561deeb2762976b44
SHA1deb10121b672e1c2030b09af4e5dcfb6b467cda0
SHA256705a768a3e35e25d51c3b13033cad25ef7e9ff4491b2ce0e766b6168e87b3592
SHA512caa62f2fd7e91895c85be97bc0c71a81604aa47232fef8f855b06c23f9a26380075d3f5d29d9811feeb5e0b0413b01b10c4c91245e89f40ad2a5c29a8a5d0c3a
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Filesize
100KB
MD55c9dc41afcc7163561deeb2762976b44
SHA1deb10121b672e1c2030b09af4e5dcfb6b467cda0
SHA256705a768a3e35e25d51c3b13033cad25ef7e9ff4491b2ce0e766b6168e87b3592
SHA512caa62f2fd7e91895c85be97bc0c71a81604aa47232fef8f855b06c23f9a26380075d3f5d29d9811feeb5e0b0413b01b10c4c91245e89f40ad2a5c29a8a5d0c3a
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Filesize
100KB
MD55c9dc41afcc7163561deeb2762976b44
SHA1deb10121b672e1c2030b09af4e5dcfb6b467cda0
SHA256705a768a3e35e25d51c3b13033cad25ef7e9ff4491b2ce0e766b6168e87b3592
SHA512caa62f2fd7e91895c85be97bc0c71a81604aa47232fef8f855b06c23f9a26380075d3f5d29d9811feeb5e0b0413b01b10c4c91245e89f40ad2a5c29a8a5d0c3a
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Filesize
100KB
MD55c9dc41afcc7163561deeb2762976b44
SHA1deb10121b672e1c2030b09af4e5dcfb6b467cda0
SHA256705a768a3e35e25d51c3b13033cad25ef7e9ff4491b2ce0e766b6168e87b3592
SHA512caa62f2fd7e91895c85be97bc0c71a81604aa47232fef8f855b06c23f9a26380075d3f5d29d9811feeb5e0b0413b01b10c4c91245e89f40ad2a5c29a8a5d0c3a