Analysis
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max time kernel
193s -
max time network
215s -
platform
windows10-2004_x64 -
resource
win10v2004-20221111-en -
resource tags
arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system -
submitted
03-12-2022 20:13
Static task
static1
Behavioral task
behavioral1
Sample
c7df3718eae96ea3ce5e24c47bddcd0da9f841428f8309913385cf33ebb668b5.exe
Resource
win7-20221111-en
windows7-x64
9 signatures
150 seconds
Behavioral task
behavioral2
Sample
c7df3718eae96ea3ce5e24c47bddcd0da9f841428f8309913385cf33ebb668b5.exe
Resource
win10v2004-20221111-en
windows10-2004-x64
10 signatures
150 seconds
General
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Target
c7df3718eae96ea3ce5e24c47bddcd0da9f841428f8309913385cf33ebb668b5.exe
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Size
220KB
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MD5
1fcbfae25b304f08679537ae249ed3d2
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SHA1
84216d14c98df02ddf0e888d30c0347f54ae8ede
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SHA256
c7df3718eae96ea3ce5e24c47bddcd0da9f841428f8309913385cf33ebb668b5
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SHA512
63b367b620b0cd979086e3567e46ee89ba0697dbb51e865e183cc04b883a503195aa0094bc3c46bd45e48d5e8819c11ae9ec3670915868557f8b07cdc560e711
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SSDEEP
3072:HAVeTJnoM5ZdEI+5RhY/3zt8WS0FDtW7M2Zm2+0lZHwuj55UqwsdoDNbh4YVud:z3ZdElRq/3zCW0m2+YmEdoDNFVI
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-1-5-21-4246620582-653642754-1174164128-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0" c7df3718eae96ea3ce5e24c47bddcd0da9f841428f8309913385cf33ebb668b5.exe Set value (int) \REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0" yiiife.exe -
Executes dropped EXE 1 IoCs
pid Process 3504 yiiife.exe -
Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
description ioc Process Key value queried \REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\Control Panel\International\Geo\Nation c7df3718eae96ea3ce5e24c47bddcd0da9f841428f8309913385cf33ebb668b5.exe -
Adds Run key to start application 2 TTPs 29 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yiiife = "C:\\Users\\Admin\\yiiife.exe /g" yiiife.exe Key created \REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\Software\Microsoft\Windows\CurrentVersion\Run\ c7df3718eae96ea3ce5e24c47bddcd0da9f841428f8309913385cf33ebb668b5.exe Set value (str) \REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yiiife = "C:\\Users\\Admin\\yiiife.exe /w" yiiife.exe Set value (str) \REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yiiife = "C:\\Users\\Admin\\yiiife.exe /l" yiiife.exe Set value (str) \REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yiiife = "C:\\Users\\Admin\\yiiife.exe /e" yiiife.exe Set value (str) \REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yiiife = "C:\\Users\\Admin\\yiiife.exe /a" yiiife.exe Set value (str) \REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yiiife = "C:\\Users\\Admin\\yiiife.exe /y" yiiife.exe Set value (str) \REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yiiife = "C:\\Users\\Admin\\yiiife.exe /x" yiiife.exe Set value (str) \REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yiiife = "C:\\Users\\Admin\\yiiife.exe /b" yiiife.exe Set value (str) \REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yiiife = "C:\\Users\\Admin\\yiiife.exe /s" yiiife.exe Set value (str) \REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yiiife = "C:\\Users\\Admin\\yiiife.exe /u" yiiife.exe Set value (str) \REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yiiife = "C:\\Users\\Admin\\yiiife.exe /r" yiiife.exe Set value (str) \REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yiiife = "C:\\Users\\Admin\\yiiife.exe /d" yiiife.exe Set value (str) \REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yiiife = "C:\\Users\\Admin\\yiiife.exe /i" yiiife.exe Set value (str) \REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yiiife = "C:\\Users\\Admin\\yiiife.exe /h" yiiife.exe Set value (str) \REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yiiife = "C:\\Users\\Admin\\yiiife.exe /p" yiiife.exe Set value (str) \REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yiiife = "C:\\Users\\Admin\\yiiife.exe /i" c7df3718eae96ea3ce5e24c47bddcd0da9f841428f8309913385cf33ebb668b5.exe Set value (str) \REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yiiife = "C:\\Users\\Admin\\yiiife.exe /j" yiiife.exe Set value (str) \REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yiiife = "C:\\Users\\Admin\\yiiife.exe /n" yiiife.exe Set value (str) \REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yiiife = "C:\\Users\\Admin\\yiiife.exe /c" yiiife.exe Set value (str) \REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yiiife = "C:\\Users\\Admin\\yiiife.exe /f" yiiife.exe Set value (str) \REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yiiife = "C:\\Users\\Admin\\yiiife.exe /q" yiiife.exe Set value (str) \REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yiiife = "C:\\Users\\Admin\\yiiife.exe /m" yiiife.exe Set value (str) \REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yiiife = "C:\\Users\\Admin\\yiiife.exe /v" yiiife.exe Set value (str) \REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yiiife = "C:\\Users\\Admin\\yiiife.exe /z" yiiife.exe Set value (str) \REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yiiife = "C:\\Users\\Admin\\yiiife.exe /o" yiiife.exe Key created \REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\Software\Microsoft\Windows\CurrentVersion\Run\ yiiife.exe Set value (str) \REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yiiife = "C:\\Users\\Admin\\yiiife.exe /k" yiiife.exe Set value (str) \REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yiiife = "C:\\Users\\Admin\\yiiife.exe /t" yiiife.exe -
Maps connected drives based on registry 3 TTPs 4 IoCs
Disk information is often read in order to detect sandboxing environments.
description ioc Process Key value queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\disk\Enum\0 c7df3718eae96ea3ce5e24c47bddcd0da9f841428f8309913385cf33ebb668b5.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum yiiife.exe Key value queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\disk\Enum\0 yiiife.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum c7df3718eae96ea3ce5e24c47bddcd0da9f841428f8309913385cf33ebb668b5.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
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Modifies registry class 1 IoCs
description ioc Process Key created \REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000_Classes\Local Settings c7df3718eae96ea3ce5e24c47bddcd0da9f841428f8309913385cf33ebb668b5.exe -
Suspicious behavior: EnumeratesProcesses 64 IoCs
pid Process 4252 c7df3718eae96ea3ce5e24c47bddcd0da9f841428f8309913385cf33ebb668b5.exe 4252 c7df3718eae96ea3ce5e24c47bddcd0da9f841428f8309913385cf33ebb668b5.exe 3504 yiiife.exe 3504 yiiife.exe 3504 yiiife.exe 3504 yiiife.exe 3504 yiiife.exe 3504 yiiife.exe 3504 yiiife.exe 3504 yiiife.exe 3504 yiiife.exe 3504 yiiife.exe 3504 yiiife.exe 3504 yiiife.exe 3504 yiiife.exe 3504 yiiife.exe 3504 yiiife.exe 3504 yiiife.exe 3504 yiiife.exe 3504 yiiife.exe 3504 yiiife.exe 3504 yiiife.exe 3504 yiiife.exe 3504 yiiife.exe 3504 yiiife.exe 3504 yiiife.exe 3504 yiiife.exe 3504 yiiife.exe 3504 yiiife.exe 3504 yiiife.exe 3504 yiiife.exe 3504 yiiife.exe 3504 yiiife.exe 3504 yiiife.exe 3504 yiiife.exe 3504 yiiife.exe 3504 yiiife.exe 3504 yiiife.exe 3504 yiiife.exe 3504 yiiife.exe 3504 yiiife.exe 3504 yiiife.exe 3504 yiiife.exe 3504 yiiife.exe 3504 yiiife.exe 3504 yiiife.exe 3504 yiiife.exe 3504 yiiife.exe 3504 yiiife.exe 3504 yiiife.exe 3504 yiiife.exe 3504 yiiife.exe 3504 yiiife.exe 3504 yiiife.exe 3504 yiiife.exe 3504 yiiife.exe 3504 yiiife.exe 3504 yiiife.exe 3504 yiiife.exe 3504 yiiife.exe 3504 yiiife.exe 3504 yiiife.exe 3504 yiiife.exe 3504 yiiife.exe -
Suspicious use of SetWindowsHookEx 2 IoCs
pid Process 4252 c7df3718eae96ea3ce5e24c47bddcd0da9f841428f8309913385cf33ebb668b5.exe 3504 yiiife.exe -
Suspicious use of WriteProcessMemory 3 IoCs
description pid Process procid_target PID 4252 wrote to memory of 3504 4252 c7df3718eae96ea3ce5e24c47bddcd0da9f841428f8309913385cf33ebb668b5.exe 85 PID 4252 wrote to memory of 3504 4252 c7df3718eae96ea3ce5e24c47bddcd0da9f841428f8309913385cf33ebb668b5.exe 85 PID 4252 wrote to memory of 3504 4252 c7df3718eae96ea3ce5e24c47bddcd0da9f841428f8309913385cf33ebb668b5.exe 85
Processes
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C:\Users\Admin\AppData\Local\Temp\c7df3718eae96ea3ce5e24c47bddcd0da9f841428f8309913385cf33ebb668b5.exe"C:\Users\Admin\AppData\Local\Temp\c7df3718eae96ea3ce5e24c47bddcd0da9f841428f8309913385cf33ebb668b5.exe"1⤵
- Modifies visiblity of hidden/system files in Explorer
- Checks computer location settings
- Adds Run key to start application
- Maps connected drives based on registry
- Modifies registry class
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4252 -
C:\Users\Admin\yiiife.exe"C:\Users\Admin\yiiife.exe"2⤵
- Modifies visiblity of hidden/system files in Explorer
- Executes dropped EXE
- Adds Run key to start application
- Maps connected drives based on registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetWindowsHookEx
PID:3504
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C:\Windows\System32\rundll32.exeC:\Windows\System32\rundll32.exe C:\Windows\System32\shell32.dll,SHCreateLocalServerRunDll {9aa46009-3ce0-458a-a354-715610a075e6} -Embedding1⤵PID:4940
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
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Filesize
220KB
MD51fcbfae25b304f08679537ae249ed3d2
SHA184216d14c98df02ddf0e888d30c0347f54ae8ede
SHA256c7df3718eae96ea3ce5e24c47bddcd0da9f841428f8309913385cf33ebb668b5
SHA51263b367b620b0cd979086e3567e46ee89ba0697dbb51e865e183cc04b883a503195aa0094bc3c46bd45e48d5e8819c11ae9ec3670915868557f8b07cdc560e711
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Filesize
220KB
MD51fcbfae25b304f08679537ae249ed3d2
SHA184216d14c98df02ddf0e888d30c0347f54ae8ede
SHA256c7df3718eae96ea3ce5e24c47bddcd0da9f841428f8309913385cf33ebb668b5
SHA51263b367b620b0cd979086e3567e46ee89ba0697dbb51e865e183cc04b883a503195aa0094bc3c46bd45e48d5e8819c11ae9ec3670915868557f8b07cdc560e711