Analysis
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max time kernel
122s -
max time network
123s -
platform
windows7_x64 -
resource
win7-en-20211208 -
submitted
30-01-2022 07:59
Static task
static1
Behavioral task
behavioral1
Sample
1638d7ce9e804cd3e017fe2d8effa0d0d48aa74baa93c8c50f1927bc25fcd281.exe
Resource
win7-en-20211208
Behavioral task
behavioral2
Sample
1638d7ce9e804cd3e017fe2d8effa0d0d48aa74baa93c8c50f1927bc25fcd281.exe
Resource
win10-en-20211208
General
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Target
1638d7ce9e804cd3e017fe2d8effa0d0d48aa74baa93c8c50f1927bc25fcd281.exe
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Size
114KB
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MD5
5a38c1570c196b855ef2ce54986efae4
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SHA1
f792d8798fc1fc32e9cfc2cdf0f635d178e4c5a2
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SHA256
1638d7ce9e804cd3e017fe2d8effa0d0d48aa74baa93c8c50f1927bc25fcd281
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SHA512
8382b88202d6a3c10dcbe971c789a2cb8d0b3b0b48bced1df8d32e89661f0262bc50b39426db2a7cfc549763c5579c203db9b2ce88186b9f75550f6dfbf4a6b8
Malware Config
Extracted
C:\fmf5s773-readme.txt
http://dnpscnbaix6nkwvystl3yxglz7nteicqrou3t75tpcc5532cztc46qyd.onion/posts/63
http://aplebzu47wgazapdqks6vrcv6zcnjppkbxbr6wketf56nf6aq2nmyoyd.onion/A3131A20B8F1ADDA
http://decryptor.cc/A3131A20B8F1ADDA
Signatures
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Modifies extensions of user files 7 IoCs
Ransomware generally changes the extension on encrypted files.
Processes:
1638d7ce9e804cd3e017fe2d8effa0d0d48aa74baa93c8c50f1927bc25fcd281.exedescription ioc process File renamed C:\Users\Admin\Pictures\UninstallExit.tiff => \??\c:\users\admin\pictures\UninstallExit.tiff.fmf5s773 1638d7ce9e804cd3e017fe2d8effa0d0d48aa74baa93c8c50f1927bc25fcd281.exe File opened for modification \??\c:\users\admin\pictures\ExpandExport.tiff 1638d7ce9e804cd3e017fe2d8effa0d0d48aa74baa93c8c50f1927bc25fcd281.exe File opened for modification \??\c:\users\admin\pictures\UninstallExit.tiff 1638d7ce9e804cd3e017fe2d8effa0d0d48aa74baa93c8c50f1927bc25fcd281.exe File renamed C:\Users\Admin\Pictures\ExpandExport.tiff => \??\c:\users\admin\pictures\ExpandExport.tiff.fmf5s773 1638d7ce9e804cd3e017fe2d8effa0d0d48aa74baa93c8c50f1927bc25fcd281.exe File renamed C:\Users\Admin\Pictures\ShowConvertFrom.crw => \??\c:\users\admin\pictures\ShowConvertFrom.crw.fmf5s773 1638d7ce9e804cd3e017fe2d8effa0d0d48aa74baa93c8c50f1927bc25fcd281.exe File renamed C:\Users\Admin\Pictures\SendUndo.raw => \??\c:\users\admin\pictures\SendUndo.raw.fmf5s773 1638d7ce9e804cd3e017fe2d8effa0d0d48aa74baa93c8c50f1927bc25fcd281.exe File renamed C:\Users\Admin\Pictures\TestConfirm.raw => \??\c:\users\admin\pictures\TestConfirm.raw.fmf5s773 1638d7ce9e804cd3e017fe2d8effa0d0d48aa74baa93c8c50f1927bc25fcd281.exe -
Enumerates connected drives 3 TTPs 25 IoCs
Attempts to read the root path of hard drives other than the default C: drive.
Processes:
1638d7ce9e804cd3e017fe2d8effa0d0d48aa74baa93c8c50f1927bc25fcd281.exedescription ioc process File opened (read-only) \??\B: 1638d7ce9e804cd3e017fe2d8effa0d0d48aa74baa93c8c50f1927bc25fcd281.exe File opened (read-only) \??\F: 1638d7ce9e804cd3e017fe2d8effa0d0d48aa74baa93c8c50f1927bc25fcd281.exe File opened (read-only) \??\H: 1638d7ce9e804cd3e017fe2d8effa0d0d48aa74baa93c8c50f1927bc25fcd281.exe File opened (read-only) \??\O: 1638d7ce9e804cd3e017fe2d8effa0d0d48aa74baa93c8c50f1927bc25fcd281.exe File opened (read-only) \??\X: 1638d7ce9e804cd3e017fe2d8effa0d0d48aa74baa93c8c50f1927bc25fcd281.exe File opened (read-only) \??\N: 1638d7ce9e804cd3e017fe2d8effa0d0d48aa74baa93c8c50f1927bc25fcd281.exe File opened (read-only) \??\S: 1638d7ce9e804cd3e017fe2d8effa0d0d48aa74baa93c8c50f1927bc25fcd281.exe File opened (read-only) \??\U: 1638d7ce9e804cd3e017fe2d8effa0d0d48aa74baa93c8c50f1927bc25fcd281.exe File opened (read-only) \??\W: 1638d7ce9e804cd3e017fe2d8effa0d0d48aa74baa93c8c50f1927bc25fcd281.exe File opened (read-only) \??\K: 1638d7ce9e804cd3e017fe2d8effa0d0d48aa74baa93c8c50f1927bc25fcd281.exe File opened (read-only) \??\L: 1638d7ce9e804cd3e017fe2d8effa0d0d48aa74baa93c8c50f1927bc25fcd281.exe File opened (read-only) \??\Q: 1638d7ce9e804cd3e017fe2d8effa0d0d48aa74baa93c8c50f1927bc25fcd281.exe File opened (read-only) \??\R: 1638d7ce9e804cd3e017fe2d8effa0d0d48aa74baa93c8c50f1927bc25fcd281.exe File opened (read-only) \??\A: 1638d7ce9e804cd3e017fe2d8effa0d0d48aa74baa93c8c50f1927bc25fcd281.exe File opened (read-only) \??\G: 1638d7ce9e804cd3e017fe2d8effa0d0d48aa74baa93c8c50f1927bc25fcd281.exe File opened (read-only) \??\I: 1638d7ce9e804cd3e017fe2d8effa0d0d48aa74baa93c8c50f1927bc25fcd281.exe File opened (read-only) \??\J: 1638d7ce9e804cd3e017fe2d8effa0d0d48aa74baa93c8c50f1927bc25fcd281.exe File opened (read-only) \??\V: 1638d7ce9e804cd3e017fe2d8effa0d0d48aa74baa93c8c50f1927bc25fcd281.exe File opened (read-only) \??\Z: 1638d7ce9e804cd3e017fe2d8effa0d0d48aa74baa93c8c50f1927bc25fcd281.exe File opened (read-only) \??\Y: 1638d7ce9e804cd3e017fe2d8effa0d0d48aa74baa93c8c50f1927bc25fcd281.exe File opened (read-only) \??\D: 1638d7ce9e804cd3e017fe2d8effa0d0d48aa74baa93c8c50f1927bc25fcd281.exe File opened (read-only) \??\E: 1638d7ce9e804cd3e017fe2d8effa0d0d48aa74baa93c8c50f1927bc25fcd281.exe File opened (read-only) \??\M: 1638d7ce9e804cd3e017fe2d8effa0d0d48aa74baa93c8c50f1927bc25fcd281.exe File opened (read-only) \??\P: 1638d7ce9e804cd3e017fe2d8effa0d0d48aa74baa93c8c50f1927bc25fcd281.exe File opened (read-only) \??\T: 1638d7ce9e804cd3e017fe2d8effa0d0d48aa74baa93c8c50f1927bc25fcd281.exe -
Sets desktop wallpaper using registry 2 TTPs 1 IoCs
Processes:
1638d7ce9e804cd3e017fe2d8effa0d0d48aa74baa93c8c50f1927bc25fcd281.exedescription ioc process Set value (str) \REGISTRY\USER\S-1-5-21-2329389628-4064185017-3901522362-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\AppData\\Local\\Temp\\ynevslfautuy.bmp" 1638d7ce9e804cd3e017fe2d8effa0d0d48aa74baa93c8c50f1927bc25fcd281.exe -
Drops file in Program Files directory 39 IoCs
Processes:
1638d7ce9e804cd3e017fe2d8effa0d0d48aa74baa93c8c50f1927bc25fcd281.exedescription ioc process File opened for modification \??\c:\program files\ConnectUninstall.doc 1638d7ce9e804cd3e017fe2d8effa0d0d48aa74baa93c8c50f1927bc25fcd281.exe File opened for modification \??\c:\program files\RegisterPublish.ppsm 1638d7ce9e804cd3e017fe2d8effa0d0d48aa74baa93c8c50f1927bc25fcd281.exe File opened for modification \??\c:\program files\StepOut.easmx 1638d7ce9e804cd3e017fe2d8effa0d0d48aa74baa93c8c50f1927bc25fcd281.exe File opened for modification \??\c:\program files\SyncPing.doc 1638d7ce9e804cd3e017fe2d8effa0d0d48aa74baa93c8c50f1927bc25fcd281.exe File created \??\c:\program files (x86)\fmf5s773-readme.txt 1638d7ce9e804cd3e017fe2d8effa0d0d48aa74baa93c8c50f1927bc25fcd281.exe File opened for modification \??\c:\program files\ConfirmBackup.crw 1638d7ce9e804cd3e017fe2d8effa0d0d48aa74baa93c8c50f1927bc25fcd281.exe File opened for modification \??\c:\program files\GrantUnblock.mp4 1638d7ce9e804cd3e017fe2d8effa0d0d48aa74baa93c8c50f1927bc25fcd281.exe File opened for modification \??\c:\program files\UndoDeny.AAC 1638d7ce9e804cd3e017fe2d8effa0d0d48aa74baa93c8c50f1927bc25fcd281.exe File created \??\c:\program files (x86)\microsoft sql server compact edition\v3.5\desktop\fmf5s773-readme.txt 1638d7ce9e804cd3e017fe2d8effa0d0d48aa74baa93c8c50f1927bc25fcd281.exe File opened for modification \??\c:\program files\RegisterLimit.potx 1638d7ce9e804cd3e017fe2d8effa0d0d48aa74baa93c8c50f1927bc25fcd281.exe File opened for modification \??\c:\program files\RenameAssert.emf 1638d7ce9e804cd3e017fe2d8effa0d0d48aa74baa93c8c50f1927bc25fcd281.exe File opened for modification \??\c:\program files\ReadInvoke.tiff 1638d7ce9e804cd3e017fe2d8effa0d0d48aa74baa93c8c50f1927bc25fcd281.exe File opened for modification \??\c:\program files\RestoreSelect.mhtml 1638d7ce9e804cd3e017fe2d8effa0d0d48aa74baa93c8c50f1927bc25fcd281.exe File opened for modification \??\c:\program files\UndoExport.iso 1638d7ce9e804cd3e017fe2d8effa0d0d48aa74baa93c8c50f1927bc25fcd281.exe File opened for modification \??\c:\program files\UnlockPop.xsl 1638d7ce9e804cd3e017fe2d8effa0d0d48aa74baa93c8c50f1927bc25fcd281.exe File created \??\c:\program files (x86)\microsoft sql server compact edition\fmf5s773-readme.txt 1638d7ce9e804cd3e017fe2d8effa0d0d48aa74baa93c8c50f1927bc25fcd281.exe File opened for modification \??\c:\program files\ApproveRevoke.html 1638d7ce9e804cd3e017fe2d8effa0d0d48aa74baa93c8c50f1927bc25fcd281.exe File opened for modification \??\c:\program files\PublishRevoke.3gpp 1638d7ce9e804cd3e017fe2d8effa0d0d48aa74baa93c8c50f1927bc25fcd281.exe File opened for modification \??\c:\program files\SplitRestart.tif 1638d7ce9e804cd3e017fe2d8effa0d0d48aa74baa93c8c50f1927bc25fcd281.exe File opened for modification \??\c:\program files\GetConvert.snd 1638d7ce9e804cd3e017fe2d8effa0d0d48aa74baa93c8c50f1927bc25fcd281.exe File opened for modification \??\c:\program files\InitializeGroup.avi 1638d7ce9e804cd3e017fe2d8effa0d0d48aa74baa93c8c50f1927bc25fcd281.exe File opened for modification \??\c:\program files\RevokeUse.jfif 1638d7ce9e804cd3e017fe2d8effa0d0d48aa74baa93c8c50f1927bc25fcd281.exe File opened for modification \??\c:\program files\SyncRevoke.wmf 1638d7ce9e804cd3e017fe2d8effa0d0d48aa74baa93c8c50f1927bc25fcd281.exe File opened for modification \??\c:\program files\UnlockConvert.m4v 1638d7ce9e804cd3e017fe2d8effa0d0d48aa74baa93c8c50f1927bc25fcd281.exe File created \??\c:\program files (x86)\microsoft sql server compact edition\v3.5\fmf5s773-readme.txt 1638d7ce9e804cd3e017fe2d8effa0d0d48aa74baa93c8c50f1927bc25fcd281.exe File created \??\c:\program files\fmf5s773-readme.txt 1638d7ce9e804cd3e017fe2d8effa0d0d48aa74baa93c8c50f1927bc25fcd281.exe File opened for modification \??\c:\program files\PopAssert.xht 1638d7ce9e804cd3e017fe2d8effa0d0d48aa74baa93c8c50f1927bc25fcd281.exe File opened for modification \??\c:\program files\InstallRemove.xlt 1638d7ce9e804cd3e017fe2d8effa0d0d48aa74baa93c8c50f1927bc25fcd281.exe File opened for modification \??\c:\program files\OpenRename.jpg 1638d7ce9e804cd3e017fe2d8effa0d0d48aa74baa93c8c50f1927bc25fcd281.exe File opened for modification \??\c:\program files\DismountSave.bmp 1638d7ce9e804cd3e017fe2d8effa0d0d48aa74baa93c8c50f1927bc25fcd281.exe File opened for modification \??\c:\program files\FindReset.dxf 1638d7ce9e804cd3e017fe2d8effa0d0d48aa74baa93c8c50f1927bc25fcd281.exe File opened for modification \??\c:\program files\ImportFormat.avi 1638d7ce9e804cd3e017fe2d8effa0d0d48aa74baa93c8c50f1927bc25fcd281.exe File opened for modification \??\c:\program files\MoveInvoke.mp3 1638d7ce9e804cd3e017fe2d8effa0d0d48aa74baa93c8c50f1927bc25fcd281.exe File opened for modification \??\c:\program files\MoveLock.mp4 1638d7ce9e804cd3e017fe2d8effa0d0d48aa74baa93c8c50f1927bc25fcd281.exe File opened for modification \??\c:\program files\StepTrace.vb 1638d7ce9e804cd3e017fe2d8effa0d0d48aa74baa93c8c50f1927bc25fcd281.exe File opened for modification \??\c:\program files\CloseRepair.jpg 1638d7ce9e804cd3e017fe2d8effa0d0d48aa74baa93c8c50f1927bc25fcd281.exe File opened for modification \??\c:\program files\CloseWrite.svg 1638d7ce9e804cd3e017fe2d8effa0d0d48aa74baa93c8c50f1927bc25fcd281.exe File opened for modification \??\c:\program files\UnlockMove.snd 1638d7ce9e804cd3e017fe2d8effa0d0d48aa74baa93c8c50f1927bc25fcd281.exe File opened for modification \??\c:\program files\UseReceive.ods 1638d7ce9e804cd3e017fe2d8effa0d0d48aa74baa93c8c50f1927bc25fcd281.exe -
Suspicious behavior: EnumeratesProcesses 2 IoCs
Processes:
1638d7ce9e804cd3e017fe2d8effa0d0d48aa74baa93c8c50f1927bc25fcd281.exepowershell.exepid process 1604 1638d7ce9e804cd3e017fe2d8effa0d0d48aa74baa93c8c50f1927bc25fcd281.exe 952 powershell.exe -
Suspicious use of AdjustPrivilegeToken 6 IoCs
Processes:
1638d7ce9e804cd3e017fe2d8effa0d0d48aa74baa93c8c50f1927bc25fcd281.exepowershell.exevssvc.exedescription pid process Token: SeDebugPrivilege 1604 1638d7ce9e804cd3e017fe2d8effa0d0d48aa74baa93c8c50f1927bc25fcd281.exe Token: SeDebugPrivilege 952 powershell.exe Token: SeBackupPrivilege 1052 vssvc.exe Token: SeRestorePrivilege 1052 vssvc.exe Token: SeAuditPrivilege 1052 vssvc.exe Token: SeTakeOwnershipPrivilege 1604 1638d7ce9e804cd3e017fe2d8effa0d0d48aa74baa93c8c50f1927bc25fcd281.exe -
Suspicious use of WriteProcessMemory 4 IoCs
Processes:
1638d7ce9e804cd3e017fe2d8effa0d0d48aa74baa93c8c50f1927bc25fcd281.exedescription pid process target process PID 1604 wrote to memory of 952 1604 1638d7ce9e804cd3e017fe2d8effa0d0d48aa74baa93c8c50f1927bc25fcd281.exe powershell.exe PID 1604 wrote to memory of 952 1604 1638d7ce9e804cd3e017fe2d8effa0d0d48aa74baa93c8c50f1927bc25fcd281.exe powershell.exe PID 1604 wrote to memory of 952 1604 1638d7ce9e804cd3e017fe2d8effa0d0d48aa74baa93c8c50f1927bc25fcd281.exe powershell.exe PID 1604 wrote to memory of 952 1604 1638d7ce9e804cd3e017fe2d8effa0d0d48aa74baa93c8c50f1927bc25fcd281.exe powershell.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\1638d7ce9e804cd3e017fe2d8effa0d0d48aa74baa93c8c50f1927bc25fcd281.exe"C:\Users\Admin\AppData\Local\Temp\1638d7ce9e804cd3e017fe2d8effa0d0d48aa74baa93c8c50f1927bc25fcd281.exe"1⤵
- Modifies extensions of user files
- Enumerates connected drives
- Sets desktop wallpaper using registry
- Drops file in Program Files directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1604 -
C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exepowershell -e RwBlAHQALQBXAG0AaQBPAGIAagBlAGMAdAAgAFcAaQBuADMAMgBfAFMAaABhAGQAbwB3AGMAbwBwAHkAIAB8ACAARgBvAHIARQBhAGMAaAAtAE8AYgBqAGUAYwB0ACAAewAkAF8ALgBEAGUAbABlAHQAZQAoACkAOwB9AA==2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:952
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C:\Windows\system32\wbem\unsecapp.exeC:\Windows\system32\wbem\unsecapp.exe -Embedding1⤵PID:1440
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C:\Windows\system32\vssvc.exeC:\Windows\system32\vssvc.exe1⤵
- Suspicious use of AdjustPrivilegeToken
PID:1052
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
Loading Replay Monitor...
Downloads
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memory/952-56-0x000007FEFBC31000-0x000007FEFBC33000-memory.dmpFilesize
8KB
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memory/952-58-0x0000000002940000-0x0000000002942000-memory.dmpFilesize
8KB
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memory/952-59-0x0000000002942000-0x0000000002944000-memory.dmpFilesize
8KB
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memory/952-60-0x0000000002944000-0x0000000002947000-memory.dmpFilesize
12KB
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memory/952-57-0x000007FEF2CE0000-0x000007FEF383D000-memory.dmpFilesize
11.4MB
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memory/952-61-0x000000000294B000-0x000000000296A000-memory.dmpFilesize
124KB
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memory/1604-55-0x00000000762C1000-0x00000000762C3000-memory.dmpFilesize
8KB