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Analysis
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max time kernel
169s -
max time network
47s -
platform
windows7_x64 -
resource
win7-20220812-en -
resource tags
arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system -
submitted
29/10/2022, 16:04
Static task
static1
Behavioral task
behavioral1
Sample
ca4cf2eb21af4addede0cb8eccf12a6727fd521f2f23a5647a943449df84cbc2.exe
Resource
win7-20220812-en
windows7-x64
8 signatures
150 seconds
Behavioral task
behavioral2
Sample
ca4cf2eb21af4addede0cb8eccf12a6727fd521f2f23a5647a943449df84cbc2.exe
Resource
win10v2004-20220901-en
windows10-2004-x64
8 signatures
150 seconds
General
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Target
ca4cf2eb21af4addede0cb8eccf12a6727fd521f2f23a5647a943449df84cbc2.exe
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Size
212KB
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MD5
a36c0124ac08bf78287a4c88ed88c6d0
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SHA1
070ea214ed792e40b93787216396e029df34b6b9
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SHA256
ca4cf2eb21af4addede0cb8eccf12a6727fd521f2f23a5647a943449df84cbc2
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SHA512
9ae060910d09edf5ffa824160802a402ec2d051515e82747cb553d6d5120d20c264c6aee1eba8180ecfb5908847ec9015db3b4148976ee387c2aeafa0413e8a5
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SSDEEP
3072:DALW27jpF/nCd3MiaDN/bG0sCO4FpNkNZran/SA1:sDCd3MiK/SxCO4FpbR
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-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0" ca4cf2eb21af4addede0cb8eccf12a6727fd521f2f23a5647a943449df84cbc2.exe Set value (int) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0" kuumoa.exe -
Executes dropped EXE 1 IoCs
pid Process 900 kuumoa.exe -
Loads dropped DLL 2 IoCs
pid Process 1492 ca4cf2eb21af4addede0cb8eccf12a6727fd521f2f23a5647a943449df84cbc2.exe 1492 ca4cf2eb21af4addede0cb8eccf12a6727fd521f2f23a5647a943449df84cbc2.exe -
Adds Run key to start application 2 TTPs 29 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\kuumoa = "C:\\Users\\Admin\\kuumoa.exe /x" kuumoa.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\kuumoa = "C:\\Users\\Admin\\kuumoa.exe /o" kuumoa.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\kuumoa = "C:\\Users\\Admin\\kuumoa.exe /y" kuumoa.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\kuumoa = "C:\\Users\\Admin\\kuumoa.exe /s" kuumoa.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\kuumoa = "C:\\Users\\Admin\\kuumoa.exe /a" kuumoa.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\kuumoa = "C:\\Users\\Admin\\kuumoa.exe /n" kuumoa.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\kuumoa = "C:\\Users\\Admin\\kuumoa.exe /q" kuumoa.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\kuumoa = "C:\\Users\\Admin\\kuumoa.exe /m" kuumoa.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\kuumoa = "C:\\Users\\Admin\\kuumoa.exe /k" kuumoa.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\kuumoa = "C:\\Users\\Admin\\kuumoa.exe /f" kuumoa.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\kuumoa = "C:\\Users\\Admin\\kuumoa.exe /l" kuumoa.exe Key created \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\ ca4cf2eb21af4addede0cb8eccf12a6727fd521f2f23a5647a943449df84cbc2.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\kuumoa = "C:\\Users\\Admin\\kuumoa.exe /j" kuumoa.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\kuumoa = "C:\\Users\\Admin\\kuumoa.exe /t" kuumoa.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\kuumoa = "C:\\Users\\Admin\\kuumoa.exe /b" kuumoa.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\kuumoa = "C:\\Users\\Admin\\kuumoa.exe /e" kuumoa.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\kuumoa = "C:\\Users\\Admin\\kuumoa.exe /d" kuumoa.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\kuumoa = "C:\\Users\\Admin\\kuumoa.exe /g" kuumoa.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\kuumoa = "C:\\Users\\Admin\\kuumoa.exe /p" kuumoa.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\kuumoa = "C:\\Users\\Admin\\kuumoa.exe /w" kuumoa.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\kuumoa = "C:\\Users\\Admin\\kuumoa.exe /z" kuumoa.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\kuumoa = "C:\\Users\\Admin\\kuumoa.exe /w" ca4cf2eb21af4addede0cb8eccf12a6727fd521f2f23a5647a943449df84cbc2.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\kuumoa = "C:\\Users\\Admin\\kuumoa.exe /u" kuumoa.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\kuumoa = "C:\\Users\\Admin\\kuumoa.exe /i" kuumoa.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\kuumoa = "C:\\Users\\Admin\\kuumoa.exe /h" kuumoa.exe Key created \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\ kuumoa.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\kuumoa = "C:\\Users\\Admin\\kuumoa.exe /v" kuumoa.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\kuumoa = "C:\\Users\\Admin\\kuumoa.exe /r" kuumoa.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\kuumoa = "C:\\Users\\Admin\\kuumoa.exe /c" kuumoa.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 1492 ca4cf2eb21af4addede0cb8eccf12a6727fd521f2f23a5647a943449df84cbc2.exe 900 kuumoa.exe 900 kuumoa.exe 900 kuumoa.exe 900 kuumoa.exe 900 kuumoa.exe 900 kuumoa.exe 900 kuumoa.exe 900 kuumoa.exe 900 kuumoa.exe 900 kuumoa.exe 900 kuumoa.exe 900 kuumoa.exe 900 kuumoa.exe 900 kuumoa.exe 900 kuumoa.exe 900 kuumoa.exe 900 kuumoa.exe 900 kuumoa.exe 900 kuumoa.exe 900 kuumoa.exe 900 kuumoa.exe 900 kuumoa.exe 900 kuumoa.exe 900 kuumoa.exe 900 kuumoa.exe 900 kuumoa.exe 900 kuumoa.exe 900 kuumoa.exe 900 kuumoa.exe 900 kuumoa.exe 900 kuumoa.exe 900 kuumoa.exe 900 kuumoa.exe 900 kuumoa.exe 900 kuumoa.exe 900 kuumoa.exe 900 kuumoa.exe 900 kuumoa.exe 900 kuumoa.exe 900 kuumoa.exe 900 kuumoa.exe 900 kuumoa.exe 900 kuumoa.exe 900 kuumoa.exe 900 kuumoa.exe 900 kuumoa.exe 900 kuumoa.exe 900 kuumoa.exe 900 kuumoa.exe 900 kuumoa.exe 900 kuumoa.exe 900 kuumoa.exe 900 kuumoa.exe 900 kuumoa.exe 900 kuumoa.exe 900 kuumoa.exe 900 kuumoa.exe 900 kuumoa.exe 900 kuumoa.exe 900 kuumoa.exe 900 kuumoa.exe 900 kuumoa.exe 900 kuumoa.exe -
Suspicious use of SetWindowsHookEx 2 IoCs
pid Process 1492 ca4cf2eb21af4addede0cb8eccf12a6727fd521f2f23a5647a943449df84cbc2.exe 900 kuumoa.exe -
Suspicious use of WriteProcessMemory 4 IoCs
description pid Process procid_target PID 1492 wrote to memory of 900 1492 ca4cf2eb21af4addede0cb8eccf12a6727fd521f2f23a5647a943449df84cbc2.exe 28 PID 1492 wrote to memory of 900 1492 ca4cf2eb21af4addede0cb8eccf12a6727fd521f2f23a5647a943449df84cbc2.exe 28 PID 1492 wrote to memory of 900 1492 ca4cf2eb21af4addede0cb8eccf12a6727fd521f2f23a5647a943449df84cbc2.exe 28 PID 1492 wrote to memory of 900 1492 ca4cf2eb21af4addede0cb8eccf12a6727fd521f2f23a5647a943449df84cbc2.exe 28
Processes
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C:\Users\Admin\AppData\Local\Temp\ca4cf2eb21af4addede0cb8eccf12a6727fd521f2f23a5647a943449df84cbc2.exe"C:\Users\Admin\AppData\Local\Temp\ca4cf2eb21af4addede0cb8eccf12a6727fd521f2f23a5647a943449df84cbc2.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:1492 -
C:\Users\Admin\kuumoa.exe"C:\Users\Admin\kuumoa.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:900
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
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Filesize
212KB
MD53b3f73d6253e303a76b557abc379b889
SHA1f89d8dc03a952a83ec31fa7ba71524b092cac191
SHA2561523eb50309e3e41aee075c3da63f3fe9c492f7dda86d1c78cf028d135e998f0
SHA5120d4f9e5146d42eaa1319d7388b58a068278dad8a0f7cdbc2e0106e4d7cbe20c565c01cf907f5fedefa27885137c1bfdb9e728261d50d0ed0a9df14db6dbe58db
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Filesize
212KB
MD53b3f73d6253e303a76b557abc379b889
SHA1f89d8dc03a952a83ec31fa7ba71524b092cac191
SHA2561523eb50309e3e41aee075c3da63f3fe9c492f7dda86d1c78cf028d135e998f0
SHA5120d4f9e5146d42eaa1319d7388b58a068278dad8a0f7cdbc2e0106e4d7cbe20c565c01cf907f5fedefa27885137c1bfdb9e728261d50d0ed0a9df14db6dbe58db
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Filesize
212KB
MD53b3f73d6253e303a76b557abc379b889
SHA1f89d8dc03a952a83ec31fa7ba71524b092cac191
SHA2561523eb50309e3e41aee075c3da63f3fe9c492f7dda86d1c78cf028d135e998f0
SHA5120d4f9e5146d42eaa1319d7388b58a068278dad8a0f7cdbc2e0106e4d7cbe20c565c01cf907f5fedefa27885137c1bfdb9e728261d50d0ed0a9df14db6dbe58db
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Filesize
212KB
MD53b3f73d6253e303a76b557abc379b889
SHA1f89d8dc03a952a83ec31fa7ba71524b092cac191
SHA2561523eb50309e3e41aee075c3da63f3fe9c492f7dda86d1c78cf028d135e998f0
SHA5120d4f9e5146d42eaa1319d7388b58a068278dad8a0f7cdbc2e0106e4d7cbe20c565c01cf907f5fedefa27885137c1bfdb9e728261d50d0ed0a9df14db6dbe58db