Analysis
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max time kernel
148s -
max time network
194s -
platform
windows7_x64 -
resource
win7v20210410 -
submitted
26-07-2021 12:41
Static task
static1
Behavioral task
behavioral1
Sample
91514e6be3f581a77daa79e2a4905dcbdf6bdcc32ee0f713599a94d453a26fc1.sample.exe
Resource
win7v20210410
General
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Target
91514e6be3f581a77daa79e2a4905dcbdf6bdcc32ee0f713599a94d453a26fc1.sample.exe
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Size
484KB
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MD5
8205a1106ae91d0b0705992d61e84ab2
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SHA1
49cdc85728bf604a50f838f7ae941977852cc7a2
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SHA256
91514e6be3f581a77daa79e2a4905dcbdf6bdcc32ee0f713599a94d453a26fc1
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SHA512
8fc53dacd6b21ed9e1dc2a00edf154c40699754a116bdaf6566b8341c70ac293c8ba69d69a767af5ad8d0c8737a22dbe2609594983a1200375d40af3f4953b2e
Malware Config
Extracted
C:\DECRYPT-FILES.txt
maze
http://aoacugmutagkwctu.onion/87fe09937d76ac8c
https://mazedecrypt.top/87fe09937d76ac8c
Signatures
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Maze
Ransomware family also known as ChaCha.
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Deletes shadow copies 2 TTPs
Ransomware often targets backup files to inhibit system recovery.
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Modifies extensions of user files 6 IoCs
Ransomware generally changes the extension on encrypted files.
Processes:
91514e6be3f581a77daa79e2a4905dcbdf6bdcc32ee0f713599a94d453a26fc1.sample.exedescription ioc Process File renamed C:\Users\Admin\Pictures\BackupProtect.raw => C:\Users\Admin\Pictures\BackupProtect.raw.8VYH3oU 91514e6be3f581a77daa79e2a4905dcbdf6bdcc32ee0f713599a94d453a26fc1.sample.exe File renamed C:\Users\Admin\Pictures\MergeComplete.png => C:\Users\Admin\Pictures\MergeComplete.png.qulB 91514e6be3f581a77daa79e2a4905dcbdf6bdcc32ee0f713599a94d453a26fc1.sample.exe File renamed C:\Users\Admin\Pictures\RedoMove.raw => C:\Users\Admin\Pictures\RedoMove.raw.qulB 91514e6be3f581a77daa79e2a4905dcbdf6bdcc32ee0f713599a94d453a26fc1.sample.exe File renamed C:\Users\Admin\Pictures\SaveBlock.tif => C:\Users\Admin\Pictures\SaveBlock.tif.qulB 91514e6be3f581a77daa79e2a4905dcbdf6bdcc32ee0f713599a94d453a26fc1.sample.exe File renamed C:\Users\Admin\Pictures\UnblockUndo.crw => C:\Users\Admin\Pictures\UnblockUndo.crw.1Qbsa 91514e6be3f581a77daa79e2a4905dcbdf6bdcc32ee0f713599a94d453a26fc1.sample.exe File renamed C:\Users\Admin\Pictures\UnprotectSelect.raw => C:\Users\Admin\Pictures\UnprotectSelect.raw.1Qbsa 91514e6be3f581a77daa79e2a4905dcbdf6bdcc32ee0f713599a94d453a26fc1.sample.exe -
Drops startup file 2 IoCs
Processes:
91514e6be3f581a77daa79e2a4905dcbdf6bdcc32ee0f713599a94d453a26fc1.sample.exedescription ioc Process File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\DECRYPT-FILES.txt 91514e6be3f581a77daa79e2a4905dcbdf6bdcc32ee0f713599a94d453a26fc1.sample.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\u33ssl.tmp 91514e6be3f581a77daa79e2a4905dcbdf6bdcc32ee0f713599a94d453a26fc1.sample.exe -
Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
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Sets desktop wallpaper using registry 2 TTPs 1 IoCs
Processes:
91514e6be3f581a77daa79e2a4905dcbdf6bdcc32ee0f713599a94d453a26fc1.sample.exedescription ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-2513283230-931923277-594887482-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\AppData\\Local\\Temp\\\\000.bmp" 91514e6be3f581a77daa79e2a4905dcbdf6bdcc32ee0f713599a94d453a26fc1.sample.exe -
Drops file in Program Files directory 30 IoCs
Processes:
91514e6be3f581a77daa79e2a4905dcbdf6bdcc32ee0f713599a94d453a26fc1.sample.exedescription ioc Process File opened for modification C:\Program Files\LimitMove.emz 91514e6be3f581a77daa79e2a4905dcbdf6bdcc32ee0f713599a94d453a26fc1.sample.exe File opened for modification C:\Program Files\MergeMount.M2TS 91514e6be3f581a77daa79e2a4905dcbdf6bdcc32ee0f713599a94d453a26fc1.sample.exe File opened for modification C:\Program Files\ReceiveLock.vbe 91514e6be3f581a77daa79e2a4905dcbdf6bdcc32ee0f713599a94d453a26fc1.sample.exe File opened for modification C:\Program Files\RepairRemove.dot 91514e6be3f581a77daa79e2a4905dcbdf6bdcc32ee0f713599a94d453a26fc1.sample.exe File opened for modification C:\Program Files (x86)\Microsoft SQL Server Compact Edition\v3.5\u33ssl.tmp 91514e6be3f581a77daa79e2a4905dcbdf6bdcc32ee0f713599a94d453a26fc1.sample.exe File opened for modification C:\Program Files\EnableSubmit.mpeg 91514e6be3f581a77daa79e2a4905dcbdf6bdcc32ee0f713599a94d453a26fc1.sample.exe File opened for modification C:\Program Files\BlockPing.mpg 91514e6be3f581a77daa79e2a4905dcbdf6bdcc32ee0f713599a94d453a26fc1.sample.exe File opened for modification C:\Program Files\ConfirmSuspend.jtx 91514e6be3f581a77daa79e2a4905dcbdf6bdcc32ee0f713599a94d453a26fc1.sample.exe File opened for modification C:\Program Files\u33ssl.tmp 91514e6be3f581a77daa79e2a4905dcbdf6bdcc32ee0f713599a94d453a26fc1.sample.exe File created C:\Program Files (x86)\Microsoft SQL Server Compact Edition\v3.5\DECRYPT-FILES.txt 91514e6be3f581a77daa79e2a4905dcbdf6bdcc32ee0f713599a94d453a26fc1.sample.exe File created C:\Program Files\DECRYPT-FILES.txt 91514e6be3f581a77daa79e2a4905dcbdf6bdcc32ee0f713599a94d453a26fc1.sample.exe File opened for modification C:\Program Files\StartEnter.ini 91514e6be3f581a77daa79e2a4905dcbdf6bdcc32ee0f713599a94d453a26fc1.sample.exe File opened for modification C:\Program Files\HideExpand.m4v 91514e6be3f581a77daa79e2a4905dcbdf6bdcc32ee0f713599a94d453a26fc1.sample.exe File created C:\Program Files (x86)\DECRYPT-FILES.txt 91514e6be3f581a77daa79e2a4905dcbdf6bdcc32ee0f713599a94d453a26fc1.sample.exe File created C:\Program Files (x86)\Microsoft SQL Server Compact Edition\DECRYPT-FILES.txt 91514e6be3f581a77daa79e2a4905dcbdf6bdcc32ee0f713599a94d453a26fc1.sample.exe File opened for modification C:\Program Files (x86)\Microsoft SQL Server Compact Edition\v3.5\Desktop\u33ssl.tmp 91514e6be3f581a77daa79e2a4905dcbdf6bdcc32ee0f713599a94d453a26fc1.sample.exe File opened for modification C:\Program Files\PingComplete.mp4 91514e6be3f581a77daa79e2a4905dcbdf6bdcc32ee0f713599a94d453a26fc1.sample.exe File opened for modification C:\Program Files\UnpublishCheckpoint.DVR 91514e6be3f581a77daa79e2a4905dcbdf6bdcc32ee0f713599a94d453a26fc1.sample.exe File opened for modification C:\Program Files (x86)\Microsoft SQL Server Compact Edition\u33ssl.tmp 91514e6be3f581a77daa79e2a4905dcbdf6bdcc32ee0f713599a94d453a26fc1.sample.exe File opened for modification C:\Program Files (x86)\u33ssl.tmp 91514e6be3f581a77daa79e2a4905dcbdf6bdcc32ee0f713599a94d453a26fc1.sample.exe File opened for modification C:\Program Files\BackupExpand.mpeg 91514e6be3f581a77daa79e2a4905dcbdf6bdcc32ee0f713599a94d453a26fc1.sample.exe File opened for modification C:\Program Files\RequestDisconnect.eps 91514e6be3f581a77daa79e2a4905dcbdf6bdcc32ee0f713599a94d453a26fc1.sample.exe File opened for modification C:\Program Files\SkipDisable.jfif 91514e6be3f581a77daa79e2a4905dcbdf6bdcc32ee0f713599a94d453a26fc1.sample.exe File opened for modification C:\Program Files\SplitEdit.wmv 91514e6be3f581a77daa79e2a4905dcbdf6bdcc32ee0f713599a94d453a26fc1.sample.exe File opened for modification C:\Program Files\StartSync.docx 91514e6be3f581a77daa79e2a4905dcbdf6bdcc32ee0f713599a94d453a26fc1.sample.exe File opened for modification C:\Program Files\InitializeDebug.vstx 91514e6be3f581a77daa79e2a4905dcbdf6bdcc32ee0f713599a94d453a26fc1.sample.exe File opened for modification C:\Program Files\GrantResolve.zip 91514e6be3f581a77daa79e2a4905dcbdf6bdcc32ee0f713599a94d453a26fc1.sample.exe File opened for modification C:\Program Files\TraceOpen.png 91514e6be3f581a77daa79e2a4905dcbdf6bdcc32ee0f713599a94d453a26fc1.sample.exe File created C:\Program Files (x86)\Microsoft SQL Server Compact Edition\v3.5\Desktop\DECRYPT-FILES.txt 91514e6be3f581a77daa79e2a4905dcbdf6bdcc32ee0f713599a94d453a26fc1.sample.exe File opened for modification C:\Program Files\FindLimit.wdp 91514e6be3f581a77daa79e2a4905dcbdf6bdcc32ee0f713599a94d453a26fc1.sample.exe -
Suspicious behavior: EnumeratesProcesses 1 IoCs
Processes:
91514e6be3f581a77daa79e2a4905dcbdf6bdcc32ee0f713599a94d453a26fc1.sample.exepid Process 1620 91514e6be3f581a77daa79e2a4905dcbdf6bdcc32ee0f713599a94d453a26fc1.sample.exe -
Suspicious use of AdjustPrivilegeToken 47 IoCs
Processes:
vssvc.exewmic.exeAUDIODG.EXEdescription pid Process Token: SeBackupPrivilege 516 vssvc.exe Token: SeRestorePrivilege 516 vssvc.exe Token: SeAuditPrivilege 516 vssvc.exe Token: SeIncreaseQuotaPrivilege 2020 wmic.exe Token: SeSecurityPrivilege 2020 wmic.exe Token: SeTakeOwnershipPrivilege 2020 wmic.exe Token: SeLoadDriverPrivilege 2020 wmic.exe Token: SeSystemProfilePrivilege 2020 wmic.exe Token: SeSystemtimePrivilege 2020 wmic.exe Token: SeProfSingleProcessPrivilege 2020 wmic.exe Token: SeIncBasePriorityPrivilege 2020 wmic.exe Token: SeCreatePagefilePrivilege 2020 wmic.exe Token: SeBackupPrivilege 2020 wmic.exe Token: SeRestorePrivilege 2020 wmic.exe Token: SeShutdownPrivilege 2020 wmic.exe Token: SeDebugPrivilege 2020 wmic.exe Token: SeSystemEnvironmentPrivilege 2020 wmic.exe Token: SeRemoteShutdownPrivilege 2020 wmic.exe Token: SeUndockPrivilege 2020 wmic.exe Token: SeManageVolumePrivilege 2020 wmic.exe Token: 33 2020 wmic.exe Token: 34 2020 wmic.exe Token: 35 2020 wmic.exe Token: SeIncreaseQuotaPrivilege 2020 wmic.exe Token: SeSecurityPrivilege 2020 wmic.exe Token: SeTakeOwnershipPrivilege 2020 wmic.exe Token: SeLoadDriverPrivilege 2020 wmic.exe Token: SeSystemProfilePrivilege 2020 wmic.exe Token: SeSystemtimePrivilege 2020 wmic.exe Token: SeProfSingleProcessPrivilege 2020 wmic.exe Token: SeIncBasePriorityPrivilege 2020 wmic.exe Token: SeCreatePagefilePrivilege 2020 wmic.exe Token: SeBackupPrivilege 2020 wmic.exe Token: SeRestorePrivilege 2020 wmic.exe Token: SeShutdownPrivilege 2020 wmic.exe Token: SeDebugPrivilege 2020 wmic.exe Token: SeSystemEnvironmentPrivilege 2020 wmic.exe Token: SeRemoteShutdownPrivilege 2020 wmic.exe Token: SeUndockPrivilege 2020 wmic.exe Token: SeManageVolumePrivilege 2020 wmic.exe Token: 33 2020 wmic.exe Token: 34 2020 wmic.exe Token: 35 2020 wmic.exe Token: 33 2008 AUDIODG.EXE Token: SeIncBasePriorityPrivilege 2008 AUDIODG.EXE Token: 33 2008 AUDIODG.EXE Token: SeIncBasePriorityPrivilege 2008 AUDIODG.EXE -
Suspicious use of WriteProcessMemory 4 IoCs
Processes:
91514e6be3f581a77daa79e2a4905dcbdf6bdcc32ee0f713599a94d453a26fc1.sample.exedescription pid Process procid_target PID 1620 wrote to memory of 2020 1620 91514e6be3f581a77daa79e2a4905dcbdf6bdcc32ee0f713599a94d453a26fc1.sample.exe 35 PID 1620 wrote to memory of 2020 1620 91514e6be3f581a77daa79e2a4905dcbdf6bdcc32ee0f713599a94d453a26fc1.sample.exe 35 PID 1620 wrote to memory of 2020 1620 91514e6be3f581a77daa79e2a4905dcbdf6bdcc32ee0f713599a94d453a26fc1.sample.exe 35 PID 1620 wrote to memory of 2020 1620 91514e6be3f581a77daa79e2a4905dcbdf6bdcc32ee0f713599a94d453a26fc1.sample.exe 35
Processes
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C:\Users\Admin\AppData\Local\Temp\91514e6be3f581a77daa79e2a4905dcbdf6bdcc32ee0f713599a94d453a26fc1.sample.exe"C:\Users\Admin\AppData\Local\Temp\91514e6be3f581a77daa79e2a4905dcbdf6bdcc32ee0f713599a94d453a26fc1.sample.exe"1⤵
- Modifies extensions of user files
- Drops startup file
- Sets desktop wallpaper using registry
- Drops file in Program Files directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:1620 -
C:\Windows\system32\wbem\wmic.exe"C:\dvcsj\l\..\..\Windows\sb\..\system32\yun\jh\vrv\..\..\..\wbem\fehdw\ynjdr\..\..\wmic.exe" shadowcopy delete2⤵
- Suspicious use of AdjustPrivilegeToken
PID:2020
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C:\Windows\system32\vssvc.exeC:\Windows\system32\vssvc.exe1⤵
- Suspicious use of AdjustPrivilegeToken
PID:516
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C:\Windows\SysWOW64\DllHost.exeC:\Windows\SysWOW64\DllHost.exe /Processid:{3F6B5E16-092A-41ED-930B-0B4125D91D4E}1⤵PID:1592
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C:\Windows\system32\AUDIODG.EXEC:\Windows\system32\AUDIODG.EXE 0x57c1⤵
- Suspicious use of AdjustPrivilegeToken
PID:2008