Analysis
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max time kernel
229s -
max time network
231s -
platform
windows7_x64 -
resource
win7-20221111-en -
resource tags
arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system -
submitted
05-12-2022 09:19
Static task
static1
Behavioral task
behavioral1
Sample
cdb45add999d513cf4e9583651555c75f4e1f333c859e7811d75b9d93700fc4f.exe
Resource
win7-20221111-en
windows7-x64
8 signatures
150 seconds
Behavioral task
behavioral2
Sample
cdb45add999d513cf4e9583651555c75f4e1f333c859e7811d75b9d93700fc4f.exe
Resource
win10v2004-20221111-en
windows10-2004-x64
8 signatures
150 seconds
General
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Target
cdb45add999d513cf4e9583651555c75f4e1f333c859e7811d75b9d93700fc4f.exe
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Size
240KB
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MD5
3c74ab1f4881ec76b902f8d03381caca
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SHA1
00cb9486865eefa5427a63933eaa688d30be3558
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SHA256
cdb45add999d513cf4e9583651555c75f4e1f333c859e7811d75b9d93700fc4f
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SHA512
d680a154343b0bf0d1b226045ab1ab8cc84ede12dadda66a70c94f4eedcad503cd3f923681b0b369eb0a08821db2f57f277fa4a2896cf1cbccd26eae13fa19f1
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SSDEEP
6144:XUOG3dwqsNwemAB0EqxF6snji81RUinKchhyCSQ:JkdQQJsN
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-1-5-21-1214520366-621468234-4062160515-1000\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0" cdb45add999d513cf4e9583651555c75f4e1f333c859e7811d75b9d93700fc4f.exe Set value (int) \REGISTRY\USER\S-1-5-21-1214520366-621468234-4062160515-1000\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0" yauihum.exe -
Executes dropped EXE 1 IoCs
pid Process 1176 yauihum.exe -
Loads dropped DLL 2 IoCs
pid Process 1260 cdb45add999d513cf4e9583651555c75f4e1f333c859e7811d75b9d93700fc4f.exe 1260 cdb45add999d513cf4e9583651555c75f4e1f333c859e7811d75b9d93700fc4f.exe -
Adds Run key to start application 2 TTPs 29 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-1214520366-621468234-4062160515-1000\Software\Microsoft\Windows\CurrentVersion\Run\yauihum = "C:\\Users\\Admin\\yauihum.exe /c" yauihum.exe Set value (str) \REGISTRY\USER\S-1-5-21-1214520366-621468234-4062160515-1000\Software\Microsoft\Windows\CurrentVersion\Run\yauihum = "C:\\Users\\Admin\\yauihum.exe /y" yauihum.exe Key created \REGISTRY\USER\S-1-5-21-1214520366-621468234-4062160515-1000\Software\Microsoft\Windows\CurrentVersion\Run\ cdb45add999d513cf4e9583651555c75f4e1f333c859e7811d75b9d93700fc4f.exe Set value (str) \REGISTRY\USER\S-1-5-21-1214520366-621468234-4062160515-1000\Software\Microsoft\Windows\CurrentVersion\Run\yauihum = "C:\\Users\\Admin\\yauihum.exe /z" yauihum.exe Set value (str) \REGISTRY\USER\S-1-5-21-1214520366-621468234-4062160515-1000\Software\Microsoft\Windows\CurrentVersion\Run\yauihum = "C:\\Users\\Admin\\yauihum.exe /j" yauihum.exe Set value (str) \REGISTRY\USER\S-1-5-21-1214520366-621468234-4062160515-1000\Software\Microsoft\Windows\CurrentVersion\Run\yauihum = "C:\\Users\\Admin\\yauihum.exe /v" yauihum.exe Set value (str) \REGISTRY\USER\S-1-5-21-1214520366-621468234-4062160515-1000\Software\Microsoft\Windows\CurrentVersion\Run\yauihum = "C:\\Users\\Admin\\yauihum.exe /d" yauihum.exe Set value (str) \REGISTRY\USER\S-1-5-21-1214520366-621468234-4062160515-1000\Software\Microsoft\Windows\CurrentVersion\Run\yauihum = "C:\\Users\\Admin\\yauihum.exe /i" yauihum.exe Set value (str) \REGISTRY\USER\S-1-5-21-1214520366-621468234-4062160515-1000\Software\Microsoft\Windows\CurrentVersion\Run\yauihum = "C:\\Users\\Admin\\yauihum.exe /e" yauihum.exe Set value (str) \REGISTRY\USER\S-1-5-21-1214520366-621468234-4062160515-1000\Software\Microsoft\Windows\CurrentVersion\Run\yauihum = "C:\\Users\\Admin\\yauihum.exe /q" yauihum.exe Set value (str) \REGISTRY\USER\S-1-5-21-1214520366-621468234-4062160515-1000\Software\Microsoft\Windows\CurrentVersion\Run\yauihum = "C:\\Users\\Admin\\yauihum.exe /l" yauihum.exe Set value (str) \REGISTRY\USER\S-1-5-21-1214520366-621468234-4062160515-1000\Software\Microsoft\Windows\CurrentVersion\Run\yauihum = "C:\\Users\\Admin\\yauihum.exe /g" yauihum.exe Set value (str) \REGISTRY\USER\S-1-5-21-1214520366-621468234-4062160515-1000\Software\Microsoft\Windows\CurrentVersion\Run\yauihum = "C:\\Users\\Admin\\yauihum.exe /f" yauihum.exe Set value (str) \REGISTRY\USER\S-1-5-21-1214520366-621468234-4062160515-1000\Software\Microsoft\Windows\CurrentVersion\Run\yauihum = "C:\\Users\\Admin\\yauihum.exe /m" yauihum.exe Set value (str) \REGISTRY\USER\S-1-5-21-1214520366-621468234-4062160515-1000\Software\Microsoft\Windows\CurrentVersion\Run\yauihum = "C:\\Users\\Admin\\yauihum.exe /x" cdb45add999d513cf4e9583651555c75f4e1f333c859e7811d75b9d93700fc4f.exe Set value (str) \REGISTRY\USER\S-1-5-21-1214520366-621468234-4062160515-1000\Software\Microsoft\Windows\CurrentVersion\Run\yauihum = "C:\\Users\\Admin\\yauihum.exe /r" yauihum.exe Set value (str) \REGISTRY\USER\S-1-5-21-1214520366-621468234-4062160515-1000\Software\Microsoft\Windows\CurrentVersion\Run\yauihum = "C:\\Users\\Admin\\yauihum.exe /n" yauihum.exe Set value (str) \REGISTRY\USER\S-1-5-21-1214520366-621468234-4062160515-1000\Software\Microsoft\Windows\CurrentVersion\Run\yauihum = "C:\\Users\\Admin\\yauihum.exe /x" yauihum.exe Set value (str) \REGISTRY\USER\S-1-5-21-1214520366-621468234-4062160515-1000\Software\Microsoft\Windows\CurrentVersion\Run\yauihum = "C:\\Users\\Admin\\yauihum.exe /b" yauihum.exe Set value (str) \REGISTRY\USER\S-1-5-21-1214520366-621468234-4062160515-1000\Software\Microsoft\Windows\CurrentVersion\Run\yauihum = "C:\\Users\\Admin\\yauihum.exe /o" yauihum.exe Set value (str) \REGISTRY\USER\S-1-5-21-1214520366-621468234-4062160515-1000\Software\Microsoft\Windows\CurrentVersion\Run\yauihum = "C:\\Users\\Admin\\yauihum.exe /a" yauihum.exe Set value (str) \REGISTRY\USER\S-1-5-21-1214520366-621468234-4062160515-1000\Software\Microsoft\Windows\CurrentVersion\Run\yauihum = "C:\\Users\\Admin\\yauihum.exe /k" yauihum.exe Set value (str) \REGISTRY\USER\S-1-5-21-1214520366-621468234-4062160515-1000\Software\Microsoft\Windows\CurrentVersion\Run\yauihum = "C:\\Users\\Admin\\yauihum.exe /h" yauihum.exe Key created \REGISTRY\USER\S-1-5-21-1214520366-621468234-4062160515-1000\Software\Microsoft\Windows\CurrentVersion\Run\ yauihum.exe Set value (str) \REGISTRY\USER\S-1-5-21-1214520366-621468234-4062160515-1000\Software\Microsoft\Windows\CurrentVersion\Run\yauihum = "C:\\Users\\Admin\\yauihum.exe /t" yauihum.exe Set value (str) \REGISTRY\USER\S-1-5-21-1214520366-621468234-4062160515-1000\Software\Microsoft\Windows\CurrentVersion\Run\yauihum = "C:\\Users\\Admin\\yauihum.exe /u" yauihum.exe Set value (str) \REGISTRY\USER\S-1-5-21-1214520366-621468234-4062160515-1000\Software\Microsoft\Windows\CurrentVersion\Run\yauihum = "C:\\Users\\Admin\\yauihum.exe /s" yauihum.exe Set value (str) \REGISTRY\USER\S-1-5-21-1214520366-621468234-4062160515-1000\Software\Microsoft\Windows\CurrentVersion\Run\yauihum = "C:\\Users\\Admin\\yauihum.exe /w" yauihum.exe Set value (str) \REGISTRY\USER\S-1-5-21-1214520366-621468234-4062160515-1000\Software\Microsoft\Windows\CurrentVersion\Run\yauihum = "C:\\Users\\Admin\\yauihum.exe /p" yauihum.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 1260 cdb45add999d513cf4e9583651555c75f4e1f333c859e7811d75b9d93700fc4f.exe 1176 yauihum.exe 1176 yauihum.exe 1176 yauihum.exe 1176 yauihum.exe 1176 yauihum.exe 1176 yauihum.exe 1176 yauihum.exe 1176 yauihum.exe 1176 yauihum.exe 1176 yauihum.exe 1176 yauihum.exe 1176 yauihum.exe 1176 yauihum.exe 1176 yauihum.exe 1176 yauihum.exe 1176 yauihum.exe 1176 yauihum.exe 1176 yauihum.exe 1176 yauihum.exe 1176 yauihum.exe 1176 yauihum.exe 1176 yauihum.exe 1176 yauihum.exe 1176 yauihum.exe 1176 yauihum.exe 1176 yauihum.exe 1176 yauihum.exe 1176 yauihum.exe 1176 yauihum.exe 1176 yauihum.exe 1176 yauihum.exe 1176 yauihum.exe 1176 yauihum.exe 1176 yauihum.exe 1176 yauihum.exe 1176 yauihum.exe 1176 yauihum.exe 1176 yauihum.exe 1176 yauihum.exe 1176 yauihum.exe 1176 yauihum.exe 1176 yauihum.exe 1176 yauihum.exe 1176 yauihum.exe 1176 yauihum.exe 1176 yauihum.exe 1176 yauihum.exe 1176 yauihum.exe 1176 yauihum.exe 1176 yauihum.exe 1176 yauihum.exe 1176 yauihum.exe 1176 yauihum.exe 1176 yauihum.exe 1176 yauihum.exe 1176 yauihum.exe 1176 yauihum.exe 1176 yauihum.exe 1176 yauihum.exe 1176 yauihum.exe 1176 yauihum.exe 1176 yauihum.exe 1176 yauihum.exe -
Suspicious use of SetWindowsHookEx 2 IoCs
pid Process 1260 cdb45add999d513cf4e9583651555c75f4e1f333c859e7811d75b9d93700fc4f.exe 1176 yauihum.exe -
Suspicious use of WriteProcessMemory 4 IoCs
description pid Process procid_target PID 1260 wrote to memory of 1176 1260 cdb45add999d513cf4e9583651555c75f4e1f333c859e7811d75b9d93700fc4f.exe 28 PID 1260 wrote to memory of 1176 1260 cdb45add999d513cf4e9583651555c75f4e1f333c859e7811d75b9d93700fc4f.exe 28 PID 1260 wrote to memory of 1176 1260 cdb45add999d513cf4e9583651555c75f4e1f333c859e7811d75b9d93700fc4f.exe 28 PID 1260 wrote to memory of 1176 1260 cdb45add999d513cf4e9583651555c75f4e1f333c859e7811d75b9d93700fc4f.exe 28
Processes
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C:\Users\Admin\AppData\Local\Temp\cdb45add999d513cf4e9583651555c75f4e1f333c859e7811d75b9d93700fc4f.exe"C:\Users\Admin\AppData\Local\Temp\cdb45add999d513cf4e9583651555c75f4e1f333c859e7811d75b9d93700fc4f.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:1260 -
C:\Users\Admin\yauihum.exe"C:\Users\Admin\yauihum.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:1176
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
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Filesize
240KB
MD520e055e7a90ded1a473bbf6ffac7ac69
SHA1f024302f1c90b4db508b7d8eb199c12daa60416c
SHA256b8a0b7e5bf50962700789e65d0ec0088f44fd5dc1f0edbef45d6b417f77c21cd
SHA512c993ed30abadd2c96e1f77a5ea0be6edcdf8779eae3c274623944907dd73d43a88c9006c69e0f37cb1be9cf75e0360f865b5f37a6f490ff120f0bbf07999f03c
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Filesize
240KB
MD520e055e7a90ded1a473bbf6ffac7ac69
SHA1f024302f1c90b4db508b7d8eb199c12daa60416c
SHA256b8a0b7e5bf50962700789e65d0ec0088f44fd5dc1f0edbef45d6b417f77c21cd
SHA512c993ed30abadd2c96e1f77a5ea0be6edcdf8779eae3c274623944907dd73d43a88c9006c69e0f37cb1be9cf75e0360f865b5f37a6f490ff120f0bbf07999f03c
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Filesize
240KB
MD520e055e7a90ded1a473bbf6ffac7ac69
SHA1f024302f1c90b4db508b7d8eb199c12daa60416c
SHA256b8a0b7e5bf50962700789e65d0ec0088f44fd5dc1f0edbef45d6b417f77c21cd
SHA512c993ed30abadd2c96e1f77a5ea0be6edcdf8779eae3c274623944907dd73d43a88c9006c69e0f37cb1be9cf75e0360f865b5f37a6f490ff120f0bbf07999f03c
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Filesize
240KB
MD520e055e7a90ded1a473bbf6ffac7ac69
SHA1f024302f1c90b4db508b7d8eb199c12daa60416c
SHA256b8a0b7e5bf50962700789e65d0ec0088f44fd5dc1f0edbef45d6b417f77c21cd
SHA512c993ed30abadd2c96e1f77a5ea0be6edcdf8779eae3c274623944907dd73d43a88c9006c69e0f37cb1be9cf75e0360f865b5f37a6f490ff120f0bbf07999f03c