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Analysis
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max time kernel
150s -
max time network
155s -
platform
windows7_x64 -
resource
win7-20220901-en -
resource tags
arch:x64arch:x86image:win7-20220901-enlocale:en-usos:windows7-x64system -
submitted
04/10/2022, 01:19
Behavioral task
behavioral1
Sample
c9fb30c59e33216f6474894ac190bbe8f431d338c4d11b649e0466f2295afcdf.exe
Resource
win7-20220901-en
Behavioral task
behavioral2
Sample
c9fb30c59e33216f6474894ac190bbe8f431d338c4d11b649e0466f2295afcdf.exe
Resource
win10v2004-20220901-en
General
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Target
c9fb30c59e33216f6474894ac190bbe8f431d338c4d11b649e0466f2295afcdf.exe
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Size
127KB
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MD5
3b5854809fa6c65c3660116d1e054df0
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SHA1
777e5e6d47f553a128584098cf9ec9109ce6c5b1
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SHA256
c9fb30c59e33216f6474894ac190bbe8f431d338c4d11b649e0466f2295afcdf
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SHA512
c72439d25654709f4291b74ea7da4b65739424536f5fa62ecc87cdc836afc6e5f0705740764f0318907652bc31e7c75ea63e49e442ce70557101e3d9df415885
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SSDEEP
3072:XmBes5HVuSQ7lr1ia2FHS6p4SwnzSJ0H9K/GyKoKLB/:XeeszuSFTH/4nm0dgGyKo0
Malware Config
Signatures
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Deletes itself 1 IoCs
pid Process 1728 mspaint.exe -
Adds Run key to start application 2 TTPs 2 IoCs
description ioc Process Key created \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows\CurrentVersion\Run mspaint.exe Set value (str) \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows\CurrentVersion\Run\Yhfwfu = "C:\\Users\\Admin\\AppData\\Roaming\\Microsoft\\Yhfwfu.exe" mspaint.exe -
Enumerates connected drives 3 TTPs 24 IoCs
Attempts to read the root path of hard drives other than the default C: drive.
description ioc Process File opened (read-only) \??\U: svchost.exe File opened (read-only) \??\V: svchost.exe File opened (read-only) \??\W: svchost.exe File opened (read-only) \??\B: svchost.exe File opened (read-only) \??\G: svchost.exe File opened (read-only) \??\I: svchost.exe File opened (read-only) \??\P: svchost.exe File opened (read-only) \??\R: svchost.exe File opened (read-only) \??\D: mspaint.exe File opened (read-only) \??\E: svchost.exe File opened (read-only) \??\F: svchost.exe File opened (read-only) \??\N: svchost.exe File opened (read-only) \??\X: svchost.exe File opened (read-only) \??\S: svchost.exe File opened (read-only) \??\T: svchost.exe File opened (read-only) \??\K: svchost.exe File opened (read-only) \??\L: svchost.exe File opened (read-only) \??\M: svchost.exe File opened (read-only) \??\O: svchost.exe File opened (read-only) \??\Q: svchost.exe File opened (read-only) \??\H: svchost.exe File opened (read-only) \??\J: svchost.exe File opened (read-only) \??\Y: svchost.exe File opened (read-only) \??\Z: svchost.exe -
Suspicious use of SetThreadContext 1 IoCs
description pid Process procid_target PID 1288 set thread context of 1352 1288 c9fb30c59e33216f6474894ac190bbe8f431d338c4d11b649e0466f2295afcdf.exe 28 -
Drops file in Windows directory 1 IoCs
description ioc Process File opened for modification C:\Windows\Debug\WIA\wiatrace.log mspaint.exe -
description ioc Process Key created \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\Zoom IEXPLORE.EXE Key created \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\Recovery\AdminActive IEXPLORE.EXE Set value (int) \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\DomainSuggestion\NextUpdateDate = "371644763" IEXPLORE.EXE Key created \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\IETld\LowMic IEXPLORE.EXE Key created \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\LowRegistry IEXPLORE.EXE Key created \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\BrowserEmulation\LowMic IEXPLORE.EXE Set value (int) \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\Recovery\AdminActive\{676C70E1-43D0-11ED-A45B-DAC72961D548} = "0" IEXPLORE.EXE Set value (str) \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch\Version = "WS not running" IEXPLORE.EXE Set value (str) \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\Main\FullScreen = "no" IEXPLORE.EXE Key created \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\IntelliForms IEXPLORE.EXE Key created \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\Toolbar\WebBrowser IEXPLORE.EXE Key created \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\LowRegistry\DontShowMeThisDialogAgain IEXPLORE.EXE Key created \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\GPU IEXPLORE.EXE Key created \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\LowRegistry\DOMStorage IEXPLORE.EXE Key created \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\DomainSuggestion IEXPLORE.EXE Key created \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\InternetRegistry IEXPLORE.EXE Key created \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\DomainSuggestion\FileNames\ IEXPLORE.EXE Set value (data) \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\Main\Window_Placement = 2c0000000200000003000000ffffffffffffffffffffffffffffffff2400000024000000aa04000089020000 IEXPLORE.EXE Key created \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\Recovery\PendingRecovery IEXPLORE.EXE Set value (int) \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\Recovery\PendingRecovery\AdminActive = "0" IEXPLORE.EXE Key created \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\Toolbar IEXPLORE.EXE Set value (int) \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\Main\CompatibilityFlags = "0" IEXPLORE.EXE Key created \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\Main IEXPLORE.EXE Key created \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\DomainSuggestion\FileNames IEXPLORE.EXE Set value (str) \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\DomainSuggestion\FileNames\en-US = "en-US.1" IEXPLORE.EXE Key created \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\Main IEXPLORE.EXE Key created \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\PageSetup IEXPLORE.EXE Key created \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch IEXPLORE.EXE -
Suspicious behavior: EnumeratesProcesses 2 IoCs
pid Process 1352 c9fb30c59e33216f6474894ac190bbe8f431d338c4d11b649e0466f2295afcdf.exe 1352 c9fb30c59e33216f6474894ac190bbe8f431d338c4d11b649e0466f2295afcdf.exe -
Suspicious use of AdjustPrivilegeToken 5 IoCs
description pid Process Token: SeDebugPrivilege 1352 c9fb30c59e33216f6474894ac190bbe8f431d338c4d11b649e0466f2295afcdf.exe Token: SeDebugPrivilege 1560 svchost.exe Token: SeDebugPrivilege 1352 c9fb30c59e33216f6474894ac190bbe8f431d338c4d11b649e0466f2295afcdf.exe Token: SeDebugPrivilege 1728 mspaint.exe Token: SeDebugPrivilege 1048 IEXPLORE.EXE -
Suspicious use of FindShellTrayWindow 1 IoCs
pid Process 1480 IEXPLORE.EXE -
Suspicious use of SetWindowsHookEx 10 IoCs
pid Process 1728 mspaint.exe 1728 mspaint.exe 1728 mspaint.exe 1728 mspaint.exe 1480 IEXPLORE.EXE 1480 IEXPLORE.EXE 1048 IEXPLORE.EXE 1048 IEXPLORE.EXE 1048 IEXPLORE.EXE 1048 IEXPLORE.EXE -
Suspicious use of WriteProcessMemory 39 IoCs
description pid Process procid_target PID 1288 wrote to memory of 1560 1288 c9fb30c59e33216f6474894ac190bbe8f431d338c4d11b649e0466f2295afcdf.exe 27 PID 1288 wrote to memory of 1560 1288 c9fb30c59e33216f6474894ac190bbe8f431d338c4d11b649e0466f2295afcdf.exe 27 PID 1288 wrote to memory of 1560 1288 c9fb30c59e33216f6474894ac190bbe8f431d338c4d11b649e0466f2295afcdf.exe 27 PID 1288 wrote to memory of 1560 1288 c9fb30c59e33216f6474894ac190bbe8f431d338c4d11b649e0466f2295afcdf.exe 27 PID 1288 wrote to memory of 1560 1288 c9fb30c59e33216f6474894ac190bbe8f431d338c4d11b649e0466f2295afcdf.exe 27 PID 1288 wrote to memory of 1560 1288 c9fb30c59e33216f6474894ac190bbe8f431d338c4d11b649e0466f2295afcdf.exe 27 PID 1288 wrote to memory of 1560 1288 c9fb30c59e33216f6474894ac190bbe8f431d338c4d11b649e0466f2295afcdf.exe 27 PID 1288 wrote to memory of 1352 1288 c9fb30c59e33216f6474894ac190bbe8f431d338c4d11b649e0466f2295afcdf.exe 28 PID 1288 wrote to memory of 1352 1288 c9fb30c59e33216f6474894ac190bbe8f431d338c4d11b649e0466f2295afcdf.exe 28 PID 1288 wrote to memory of 1352 1288 c9fb30c59e33216f6474894ac190bbe8f431d338c4d11b649e0466f2295afcdf.exe 28 PID 1288 wrote to memory of 1352 1288 c9fb30c59e33216f6474894ac190bbe8f431d338c4d11b649e0466f2295afcdf.exe 28 PID 1288 wrote to memory of 1352 1288 c9fb30c59e33216f6474894ac190bbe8f431d338c4d11b649e0466f2295afcdf.exe 28 PID 1288 wrote to memory of 1352 1288 c9fb30c59e33216f6474894ac190bbe8f431d338c4d11b649e0466f2295afcdf.exe 28 PID 1288 wrote to memory of 1352 1288 c9fb30c59e33216f6474894ac190bbe8f431d338c4d11b649e0466f2295afcdf.exe 28 PID 1288 wrote to memory of 1352 1288 c9fb30c59e33216f6474894ac190bbe8f431d338c4d11b649e0466f2295afcdf.exe 28 PID 1560 wrote to memory of 1728 1560 svchost.exe 29 PID 1560 wrote to memory of 1728 1560 svchost.exe 29 PID 1560 wrote to memory of 1728 1560 svchost.exe 29 PID 1560 wrote to memory of 1728 1560 svchost.exe 29 PID 1288 wrote to memory of 1352 1288 c9fb30c59e33216f6474894ac190bbe8f431d338c4d11b649e0466f2295afcdf.exe 28 PID 1288 wrote to memory of 1352 1288 c9fb30c59e33216f6474894ac190bbe8f431d338c4d11b649e0466f2295afcdf.exe 28 PID 1352 wrote to memory of 1476 1352 c9fb30c59e33216f6474894ac190bbe8f431d338c4d11b649e0466f2295afcdf.exe 31 PID 1352 wrote to memory of 1476 1352 c9fb30c59e33216f6474894ac190bbe8f431d338c4d11b649e0466f2295afcdf.exe 31 PID 1352 wrote to memory of 1476 1352 c9fb30c59e33216f6474894ac190bbe8f431d338c4d11b649e0466f2295afcdf.exe 31 PID 1352 wrote to memory of 1476 1352 c9fb30c59e33216f6474894ac190bbe8f431d338c4d11b649e0466f2295afcdf.exe 31 PID 1476 wrote to memory of 1480 1476 iexplore.exe 32 PID 1476 wrote to memory of 1480 1476 iexplore.exe 32 PID 1476 wrote to memory of 1480 1476 iexplore.exe 32 PID 1476 wrote to memory of 1480 1476 iexplore.exe 32 PID 1480 wrote to memory of 1048 1480 IEXPLORE.EXE 34 PID 1480 wrote to memory of 1048 1480 IEXPLORE.EXE 34 PID 1480 wrote to memory of 1048 1480 IEXPLORE.EXE 34 PID 1480 wrote to memory of 1048 1480 IEXPLORE.EXE 34 PID 1352 wrote to memory of 1560 1352 c9fb30c59e33216f6474894ac190bbe8f431d338c4d11b649e0466f2295afcdf.exe 27 PID 1352 wrote to memory of 1560 1352 c9fb30c59e33216f6474894ac190bbe8f431d338c4d11b649e0466f2295afcdf.exe 27 PID 1352 wrote to memory of 1728 1352 c9fb30c59e33216f6474894ac190bbe8f431d338c4d11b649e0466f2295afcdf.exe 29 PID 1352 wrote to memory of 1728 1352 c9fb30c59e33216f6474894ac190bbe8f431d338c4d11b649e0466f2295afcdf.exe 29 PID 1352 wrote to memory of 1048 1352 c9fb30c59e33216f6474894ac190bbe8f431d338c4d11b649e0466f2295afcdf.exe 34 PID 1352 wrote to memory of 1048 1352 c9fb30c59e33216f6474894ac190bbe8f431d338c4d11b649e0466f2295afcdf.exe 34
Processes
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C:\Users\Admin\AppData\Local\Temp\c9fb30c59e33216f6474894ac190bbe8f431d338c4d11b649e0466f2295afcdf.exe"C:\Users\Admin\AppData\Local\Temp\c9fb30c59e33216f6474894ac190bbe8f431d338c4d11b649e0466f2295afcdf.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1288 -
C:\Windows\SysWOW64\svchost.exe"C:\Windows\system32\svchost.exe"2⤵
- Enumerates connected drives
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1560 -
C:\Windows\SysWOW64\mspaint.exe"C:\Windows\system32\mspaint.exe"3⤵
- Deletes itself
- Adds Run key to start application
- Enumerates connected drives
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
PID:1728
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C:\Users\Admin\AppData\Local\Temp\c9fb30c59e33216f6474894ac190bbe8f431d338c4d11b649e0466f2295afcdf.exe"C:\Users\Admin\AppData\Local\Temp\c9fb30c59e33216f6474894ac190bbe8f431d338c4d11b649e0466f2295afcdf.exe"2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1352 -
C:\Program Files (x86)\Internet Explorer\iexplore.exe"C:\Program Files (x86)\Internet Explorer\iexplore.exe"3⤵
- Suspicious use of WriteProcessMemory
PID:1476 -
C:\Program Files\Internet Explorer\IEXPLORE.EXE"C:\Program Files\Internet Explorer\IEXPLORE.EXE"4⤵
- Modifies Internet Explorer settings
- Suspicious use of FindShellTrayWindow
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1480 -
C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE"C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:1480 CREDAT:275457 /prefetch:25⤵
- Modifies Internet Explorer settings
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
PID:1048
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
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Filesize
608B
MD50e6e1a01d5e6249306ee7854347d7e5d
SHA1caf0085498dab3a1e475bd1c2a22398650c0021c
SHA256a50499dad446264712914c760edce670a9d15b62c17e6b641092776200ff0887
SHA512f49b31ab52e14f3897faeb7f31a892106eaccd335ac982a32ae524be06f0fe07064cc9d7c0b832acbb58173988efb154a9e8678325d79f5827dc134e856c1c62