Analysis
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max time kernel
151s -
max time network
52s -
platform
windows7_x64 -
resource
win7-20220901-en -
resource tags
arch:x64arch:x86image:win7-20220901-enlocale:en-usos:windows7-x64system -
submitted
02/10/2022, 15:40
Static task
static1
Behavioral task
behavioral1
Sample
4b4f2ccea241d808fe8d910c6e9375d7f332173149f13e18bb6d49ce0ebfae0a.exe
Resource
win7-20220901-en
windows7-x64
8 signatures
150 seconds
Behavioral task
behavioral2
Sample
4b4f2ccea241d808fe8d910c6e9375d7f332173149f13e18bb6d49ce0ebfae0a.exe
Resource
win10v2004-20220812-en
windows10-2004-x64
8 signatures
150 seconds
General
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Target
4b4f2ccea241d808fe8d910c6e9375d7f332173149f13e18bb6d49ce0ebfae0a.exe
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Size
100KB
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MD5
6571a95db715a73e4d8e93459b600751
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SHA1
b158ddfb2bd5bf6f29800d0f4c55c0272d217a22
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SHA256
4b4f2ccea241d808fe8d910c6e9375d7f332173149f13e18bb6d49ce0ebfae0a
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SHA512
c7d88340d3545773358dd925cc44cc8133cee630f99825a43933946e684c62d5a5974e3d63d5c89755c1bd2277bc5ad22e511f4428ad047bf47d40c7cd2a1bb7
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SSDEEP
1536:PzQcGEsTCfNEHYkJouJjcXCSuyAn7ZtOq13i6E:DGckJouJjcg9t
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-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0" 4b4f2ccea241d808fe8d910c6e9375d7f332173149f13e18bb6d49ce0ebfae0a.exe Set value (int) \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0" mmnuh.exe -
Executes dropped EXE 1 IoCs
pid Process 1464 mmnuh.exe -
Loads dropped DLL 2 IoCs
pid Process 1340 4b4f2ccea241d808fe8d910c6e9375d7f332173149f13e18bb6d49ce0ebfae0a.exe 1340 4b4f2ccea241d808fe8d910c6e9375d7f332173149f13e18bb6d49ce0ebfae0a.exe -
Adds Run key to start application 2 TTPs 29 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows\CurrentVersion\Run\mmnuh = "C:\\Users\\Admin\\mmnuh.exe /v" mmnuh.exe Set value (str) \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows\CurrentVersion\Run\mmnuh = "C:\\Users\\Admin\\mmnuh.exe /e" mmnuh.exe Set value (str) \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows\CurrentVersion\Run\mmnuh = "C:\\Users\\Admin\\mmnuh.exe /r" mmnuh.exe Set value (str) \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows\CurrentVersion\Run\mmnuh = "C:\\Users\\Admin\\mmnuh.exe /t" mmnuh.exe Set value (str) \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows\CurrentVersion\Run\mmnuh = "C:\\Users\\Admin\\mmnuh.exe /w" mmnuh.exe Set value (str) \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows\CurrentVersion\Run\mmnuh = "C:\\Users\\Admin\\mmnuh.exe /k" mmnuh.exe Set value (str) \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows\CurrentVersion\Run\mmnuh = "C:\\Users\\Admin\\mmnuh.exe /a" mmnuh.exe Set value (str) \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows\CurrentVersion\Run\mmnuh = "C:\\Users\\Admin\\mmnuh.exe /p" mmnuh.exe Set value (str) \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows\CurrentVersion\Run\mmnuh = "C:\\Users\\Admin\\mmnuh.exe /l" mmnuh.exe Set value (str) \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows\CurrentVersion\Run\mmnuh = "C:\\Users\\Admin\\mmnuh.exe /y" mmnuh.exe Set value (str) \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows\CurrentVersion\Run\mmnuh = "C:\\Users\\Admin\\mmnuh.exe /x" mmnuh.exe Key created \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows\CurrentVersion\Run\ mmnuh.exe Set value (str) \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows\CurrentVersion\Run\mmnuh = "C:\\Users\\Admin\\mmnuh.exe /f" mmnuh.exe Set value (str) \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows\CurrentVersion\Run\mmnuh = "C:\\Users\\Admin\\mmnuh.exe /z" mmnuh.exe Set value (str) \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows\CurrentVersion\Run\mmnuh = "C:\\Users\\Admin\\mmnuh.exe /m" mmnuh.exe Set value (str) \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows\CurrentVersion\Run\mmnuh = "C:\\Users\\Admin\\mmnuh.exe /u" mmnuh.exe Set value (str) \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows\CurrentVersion\Run\mmnuh = "C:\\Users\\Admin\\mmnuh.exe /o" mmnuh.exe Set value (str) \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows\CurrentVersion\Run\mmnuh = "C:\\Users\\Admin\\mmnuh.exe /n" mmnuh.exe Set value (str) \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows\CurrentVersion\Run\mmnuh = "C:\\Users\\Admin\\mmnuh.exe /s" mmnuh.exe Set value (str) \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows\CurrentVersion\Run\mmnuh = "C:\\Users\\Admin\\mmnuh.exe /c" mmnuh.exe Set value (str) \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows\CurrentVersion\Run\mmnuh = "C:\\Users\\Admin\\mmnuh.exe /y" 4b4f2ccea241d808fe8d910c6e9375d7f332173149f13e18bb6d49ce0ebfae0a.exe Set value (str) \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows\CurrentVersion\Run\mmnuh = "C:\\Users\\Admin\\mmnuh.exe /h" mmnuh.exe Set value (str) \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows\CurrentVersion\Run\mmnuh = "C:\\Users\\Admin\\mmnuh.exe /i" mmnuh.exe Set value (str) \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows\CurrentVersion\Run\mmnuh = "C:\\Users\\Admin\\mmnuh.exe /q" mmnuh.exe Set value (str) \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows\CurrentVersion\Run\mmnuh = "C:\\Users\\Admin\\mmnuh.exe /d" mmnuh.exe Set value (str) \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows\CurrentVersion\Run\mmnuh = "C:\\Users\\Admin\\mmnuh.exe /j" mmnuh.exe Set value (str) \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows\CurrentVersion\Run\mmnuh = "C:\\Users\\Admin\\mmnuh.exe /g" mmnuh.exe Key created \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows\CurrentVersion\Run\ 4b4f2ccea241d808fe8d910c6e9375d7f332173149f13e18bb6d49ce0ebfae0a.exe Set value (str) \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows\CurrentVersion\Run\mmnuh = "C:\\Users\\Admin\\mmnuh.exe /b" mmnuh.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 1340 4b4f2ccea241d808fe8d910c6e9375d7f332173149f13e18bb6d49ce0ebfae0a.exe 1464 mmnuh.exe 1464 mmnuh.exe 1464 mmnuh.exe 1464 mmnuh.exe 1464 mmnuh.exe 1464 mmnuh.exe 1464 mmnuh.exe 1464 mmnuh.exe 1464 mmnuh.exe 1464 mmnuh.exe 1464 mmnuh.exe 1464 mmnuh.exe 1464 mmnuh.exe 1464 mmnuh.exe 1464 mmnuh.exe 1464 mmnuh.exe 1464 mmnuh.exe 1464 mmnuh.exe 1464 mmnuh.exe 1464 mmnuh.exe 1464 mmnuh.exe 1464 mmnuh.exe 1464 mmnuh.exe 1464 mmnuh.exe 1464 mmnuh.exe 1464 mmnuh.exe 1464 mmnuh.exe 1464 mmnuh.exe 1464 mmnuh.exe 1464 mmnuh.exe 1464 mmnuh.exe 1464 mmnuh.exe 1464 mmnuh.exe 1464 mmnuh.exe 1464 mmnuh.exe 1464 mmnuh.exe 1464 mmnuh.exe 1464 mmnuh.exe 1464 mmnuh.exe 1464 mmnuh.exe 1464 mmnuh.exe 1464 mmnuh.exe 1464 mmnuh.exe 1464 mmnuh.exe 1464 mmnuh.exe 1464 mmnuh.exe 1464 mmnuh.exe 1464 mmnuh.exe 1464 mmnuh.exe 1464 mmnuh.exe 1464 mmnuh.exe 1464 mmnuh.exe 1464 mmnuh.exe 1464 mmnuh.exe 1464 mmnuh.exe 1464 mmnuh.exe 1464 mmnuh.exe 1464 mmnuh.exe 1464 mmnuh.exe 1464 mmnuh.exe 1464 mmnuh.exe 1464 mmnuh.exe 1464 mmnuh.exe -
Suspicious use of SetWindowsHookEx 2 IoCs
pid Process 1340 4b4f2ccea241d808fe8d910c6e9375d7f332173149f13e18bb6d49ce0ebfae0a.exe 1464 mmnuh.exe -
Suspicious use of WriteProcessMemory 4 IoCs
description pid Process procid_target PID 1340 wrote to memory of 1464 1340 4b4f2ccea241d808fe8d910c6e9375d7f332173149f13e18bb6d49ce0ebfae0a.exe 27 PID 1340 wrote to memory of 1464 1340 4b4f2ccea241d808fe8d910c6e9375d7f332173149f13e18bb6d49ce0ebfae0a.exe 27 PID 1340 wrote to memory of 1464 1340 4b4f2ccea241d808fe8d910c6e9375d7f332173149f13e18bb6d49ce0ebfae0a.exe 27 PID 1340 wrote to memory of 1464 1340 4b4f2ccea241d808fe8d910c6e9375d7f332173149f13e18bb6d49ce0ebfae0a.exe 27
Processes
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C:\Users\Admin\AppData\Local\Temp\4b4f2ccea241d808fe8d910c6e9375d7f332173149f13e18bb6d49ce0ebfae0a.exe"C:\Users\Admin\AppData\Local\Temp\4b4f2ccea241d808fe8d910c6e9375d7f332173149f13e18bb6d49ce0ebfae0a.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:1340 -
C:\Users\Admin\mmnuh.exe"C:\Users\Admin\mmnuh.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:1464
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
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Filesize
100KB
MD5a485307be57c5bdbe7f51e8786a45eb1
SHA1e91842971e857121fa1b3a3efc1fdc35e589bd35
SHA256f14d3ddc64d7acbf37c7a0a04cab793a33af14a522dd859d63472ba82f7862ab
SHA51276f51e6da8ab3bf71542ac2a87111c4535cec96b1014b6ed177198406ab49f13f14905d755d2e4f712e044d639990f9f04f6f12d35dcac928d420ef052262e84
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Filesize
100KB
MD5a485307be57c5bdbe7f51e8786a45eb1
SHA1e91842971e857121fa1b3a3efc1fdc35e589bd35
SHA256f14d3ddc64d7acbf37c7a0a04cab793a33af14a522dd859d63472ba82f7862ab
SHA51276f51e6da8ab3bf71542ac2a87111c4535cec96b1014b6ed177198406ab49f13f14905d755d2e4f712e044d639990f9f04f6f12d35dcac928d420ef052262e84
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Filesize
100KB
MD5a485307be57c5bdbe7f51e8786a45eb1
SHA1e91842971e857121fa1b3a3efc1fdc35e589bd35
SHA256f14d3ddc64d7acbf37c7a0a04cab793a33af14a522dd859d63472ba82f7862ab
SHA51276f51e6da8ab3bf71542ac2a87111c4535cec96b1014b6ed177198406ab49f13f14905d755d2e4f712e044d639990f9f04f6f12d35dcac928d420ef052262e84
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Filesize
100KB
MD5a485307be57c5bdbe7f51e8786a45eb1
SHA1e91842971e857121fa1b3a3efc1fdc35e589bd35
SHA256f14d3ddc64d7acbf37c7a0a04cab793a33af14a522dd859d63472ba82f7862ab
SHA51276f51e6da8ab3bf71542ac2a87111c4535cec96b1014b6ed177198406ab49f13f14905d755d2e4f712e044d639990f9f04f6f12d35dcac928d420ef052262e84