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220217-jxx5ascaan 1Analysis
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max time kernel
149s -
max time network
151s -
platform
windows7_x64 -
resource
win7v20210408 -
submitted
25-06-2021 19:16
Static task
static1
Behavioral task
behavioral1
Sample
important.exe
Resource
win7v20210408
Behavioral task
behavioral2
Sample
important.exe
Resource
win10v20210410
General
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Target
important.exe
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Size
3.4MB
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MD5
84c82835a5d21bbcf75a61706d8ab549
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SHA1
5ff465afaabcbf0150d1a3ab2c2e74f3a4426467
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SHA256
ed01ebfbc9eb5bbea545af4d01bf5f1071661840480439c6e5babe8e080e41aa
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SHA512
90723a50c20ba3643d625595fd6be8dcf88d70ff7f4b4719a88f055d5b3149a4231018ea30d375171507a147e59f73478c0c27948590794554d031e7d54b7244
Malware Config
Extracted
C:\Users\Admin\AppData\Local\Temp\@[email protected]
wannacry
12t9YDPgwueZ9NyMgw519p7AA8isjr6SMw
Signatures
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Wannacry
WannaCry is a ransomware cryptoworm.
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Deletes shadow copies 2 TTPs
Ransomware often targets backup files to inhibit system recovery.
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Executes dropped EXE 16 IoCs
pid Process 1628 taskdl.exe 1940 @[email protected] 932 @[email protected] 1852 taskhsvc.exe 1272 taskse.exe 1628 @[email protected] 1832 taskdl.exe 676 taskse.exe 2008 @[email protected] 1640 taskdl.exe 1508 taskse.exe 1348 @[email protected] 548 taskdl.exe 1332 taskse.exe 288 @[email protected] 944 taskdl.exe -
Modifies extensions of user files 27 IoCs
Ransomware generally changes the extension on encrypted files.
description ioc Process File created C:\Users\Admin\Pictures\ReadSuspend.png.WNCRYT important.exe File created C:\Users\Admin\Pictures\SkipAdd.tiff.WNCRYT important.exe File renamed C:\Users\Admin\Pictures\DenyCheckpoint.raw.WNCRYT => C:\Users\Admin\Pictures\DenyCheckpoint.raw.WNCRY important.exe File opened for modification C:\Users\Admin\Pictures\EditConvertTo.tiff.WNCRY important.exe File created C:\Users\Admin\Pictures\EnableRemove.raw.WNCRYT important.exe File created C:\Users\Admin\Pictures\ConvertFromFind.tif.WNCRYT important.exe File renamed C:\Users\Admin\Pictures\ReadMount.png.WNCRYT => C:\Users\Admin\Pictures\ReadMount.png.WNCRY important.exe File opened for modification C:\Users\Admin\Pictures\ReadMount.png.WNCRY important.exe File opened for modification C:\Users\Admin\Pictures\ApproveUse.tiff important.exe File opened for modification C:\Users\Admin\Pictures\SkipAdd.tiff important.exe File renamed C:\Users\Admin\Pictures\ConvertFromFind.tif.WNCRYT => C:\Users\Admin\Pictures\ConvertFromFind.tif.WNCRY important.exe File opened for modification C:\Users\Admin\Pictures\ConvertFromFind.tif.WNCRY important.exe File created C:\Users\Admin\Pictures\EditConvertTo.tiff.WNCRYT important.exe File renamed C:\Users\Admin\Pictures\EnableRemove.raw.WNCRYT => C:\Users\Admin\Pictures\EnableRemove.raw.WNCRY important.exe File created C:\Users\Admin\Pictures\ApproveUse.tiff.WNCRYT important.exe File opened for modification C:\Users\Admin\Pictures\DenyCheckpoint.raw.WNCRY important.exe File renamed C:\Users\Admin\Pictures\EditConvertTo.tiff.WNCRYT => C:\Users\Admin\Pictures\EditConvertTo.tiff.WNCRY important.exe File opened for modification C:\Users\Admin\Pictures\ReadSuspend.png.WNCRY important.exe File opened for modification C:\Users\Admin\Pictures\SkipAdd.tiff.WNCRY important.exe File opened for modification C:\Users\Admin\Pictures\EditConvertTo.tiff important.exe File created C:\Users\Admin\Pictures\ReadMount.png.WNCRYT important.exe File renamed C:\Users\Admin\Pictures\SkipAdd.tiff.WNCRYT => C:\Users\Admin\Pictures\SkipAdd.tiff.WNCRY important.exe File opened for modification C:\Users\Admin\Pictures\ApproveUse.tiff.WNCRY important.exe File created C:\Users\Admin\Pictures\DenyCheckpoint.raw.WNCRYT important.exe File opened for modification C:\Users\Admin\Pictures\EnableRemove.raw.WNCRY important.exe File renamed C:\Users\Admin\Pictures\ReadSuspend.png.WNCRYT => C:\Users\Admin\Pictures\ReadSuspend.png.WNCRY important.exe File renamed C:\Users\Admin\Pictures\ApproveUse.tiff.WNCRYT => C:\Users\Admin\Pictures\ApproveUse.tiff.WNCRY important.exe -
Drops startup file 1 IoCs
description ioc Process File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\~SDAC09.tmp important.exe -
Loads dropped DLL 39 IoCs
pid Process 1608 important.exe 1608 important.exe 1788 cscript.exe 1608 important.exe 1608 important.exe 268 cmd.exe 268 cmd.exe 1940 @[email protected] 1940 @[email protected] 1852 taskhsvc.exe 1852 taskhsvc.exe 1852 taskhsvc.exe 1852 taskhsvc.exe 1852 taskhsvc.exe 1852 taskhsvc.exe 1608 important.exe 1608 important.exe 1608 important.exe 1608 important.exe 1608 important.exe 1608 important.exe 1608 important.exe 1608 important.exe 1608 important.exe 1608 important.exe 1608 important.exe 1608 important.exe 1608 important.exe 1608 important.exe 1608 important.exe 1608 important.exe 1608 important.exe 1608 important.exe 1608 important.exe 1608 important.exe 1608 important.exe 1608 important.exe 1608 important.exe 1608 important.exe -
Modifies file permissions 1 TTPs 1 IoCs
pid Process 1204 icacls.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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Adds Run key to start application 2 TTPs 2 IoCs
description ioc Process Key created \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run reg.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\avwggwjmhgtjt701 = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\tasksche.exe\"" reg.exe -
Sets desktop wallpaper using registry 2 TTPs 2 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\Desktop\\@[email protected]" important.exe Set value (str) \REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\Desktop\\@[email protected]" @[email protected] -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
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Interacts with shadow copies 2 TTPs 1 IoCs
Shadow copies are often targeted by ransomware to inhibit system recovery.
pid Process 792 vssadmin.exe -
Modifies registry key 1 TTPs 1 IoCs
pid Process 1848 reg.exe -
Suspicious behavior: EnumeratesProcesses 3 IoCs
pid Process 1852 taskhsvc.exe 1852 taskhsvc.exe 1852 taskhsvc.exe -
Suspicious behavior: GetForegroundWindowSpam 1 IoCs
pid Process 1628 @[email protected] -
Suspicious use of AdjustPrivilegeToken 51 IoCs
description pid Process Token: SeBackupPrivilege 1944 vssvc.exe Token: SeRestorePrivilege 1944 vssvc.exe Token: SeAuditPrivilege 1944 vssvc.exe Token: SeIncreaseQuotaPrivilege 1996 WMIC.exe Token: SeSecurityPrivilege 1996 WMIC.exe Token: SeTakeOwnershipPrivilege 1996 WMIC.exe Token: SeLoadDriverPrivilege 1996 WMIC.exe Token: SeSystemProfilePrivilege 1996 WMIC.exe Token: SeSystemtimePrivilege 1996 WMIC.exe Token: SeProfSingleProcessPrivilege 1996 WMIC.exe Token: SeIncBasePriorityPrivilege 1996 WMIC.exe Token: SeCreatePagefilePrivilege 1996 WMIC.exe Token: SeBackupPrivilege 1996 WMIC.exe Token: SeRestorePrivilege 1996 WMIC.exe Token: SeShutdownPrivilege 1996 WMIC.exe Token: SeDebugPrivilege 1996 WMIC.exe Token: SeSystemEnvironmentPrivilege 1996 WMIC.exe Token: SeRemoteShutdownPrivilege 1996 WMIC.exe Token: SeUndockPrivilege 1996 WMIC.exe Token: SeManageVolumePrivilege 1996 WMIC.exe Token: 33 1996 WMIC.exe Token: 34 1996 WMIC.exe Token: 35 1996 WMIC.exe Token: SeIncreaseQuotaPrivilege 1996 WMIC.exe Token: SeSecurityPrivilege 1996 WMIC.exe Token: SeTakeOwnershipPrivilege 1996 WMIC.exe Token: SeLoadDriverPrivilege 1996 WMIC.exe Token: SeSystemProfilePrivilege 1996 WMIC.exe Token: SeSystemtimePrivilege 1996 WMIC.exe Token: SeProfSingleProcessPrivilege 1996 WMIC.exe Token: SeIncBasePriorityPrivilege 1996 WMIC.exe Token: SeCreatePagefilePrivilege 1996 WMIC.exe Token: SeBackupPrivilege 1996 WMIC.exe Token: SeRestorePrivilege 1996 WMIC.exe Token: SeShutdownPrivilege 1996 WMIC.exe Token: SeDebugPrivilege 1996 WMIC.exe Token: SeSystemEnvironmentPrivilege 1996 WMIC.exe Token: SeRemoteShutdownPrivilege 1996 WMIC.exe Token: SeUndockPrivilege 1996 WMIC.exe Token: SeManageVolumePrivilege 1996 WMIC.exe Token: 33 1996 WMIC.exe Token: 34 1996 WMIC.exe Token: 35 1996 WMIC.exe Token: SeTcbPrivilege 1272 taskse.exe Token: SeTcbPrivilege 1272 taskse.exe Token: SeTcbPrivilege 676 taskse.exe Token: SeTcbPrivilege 676 taskse.exe Token: SeTcbPrivilege 1508 taskse.exe Token: SeTcbPrivilege 1508 taskse.exe Token: SeTcbPrivilege 1332 taskse.exe Token: SeTcbPrivilege 1332 taskse.exe -
Suspicious use of SetWindowsHookEx 9 IoCs
pid Process 1940 @[email protected] 932 @[email protected] 1940 @[email protected] 932 @[email protected] 1628 @[email protected] 1628 @[email protected] 2008 @[email protected] 1348 @[email protected] 288 @[email protected] -
Suspicious use of WriteProcessMemory 64 IoCs
description pid Process procid_target PID 1608 wrote to memory of 2036 1608 important.exe 26 PID 1608 wrote to memory of 2036 1608 important.exe 26 PID 1608 wrote to memory of 2036 1608 important.exe 26 PID 1608 wrote to memory of 2036 1608 important.exe 26 PID 1608 wrote to memory of 1204 1608 important.exe 28 PID 1608 wrote to memory of 1204 1608 important.exe 28 PID 1608 wrote to memory of 1204 1608 important.exe 28 PID 1608 wrote to memory of 1204 1608 important.exe 28 PID 1608 wrote to memory of 1628 1608 important.exe 31 PID 1608 wrote to memory of 1628 1608 important.exe 31 PID 1608 wrote to memory of 1628 1608 important.exe 31 PID 1608 wrote to memory of 1628 1608 important.exe 31 PID 1608 wrote to memory of 1556 1608 important.exe 32 PID 1608 wrote to memory of 1556 1608 important.exe 32 PID 1608 wrote to memory of 1556 1608 important.exe 32 PID 1608 wrote to memory of 1556 1608 important.exe 32 PID 1556 wrote to memory of 1788 1556 cmd.exe 34 PID 1556 wrote to memory of 1788 1556 cmd.exe 34 PID 1556 wrote to memory of 1788 1556 cmd.exe 34 PID 1556 wrote to memory of 1788 1556 cmd.exe 34 PID 1608 wrote to memory of 1940 1608 important.exe 38 PID 1608 wrote to memory of 1940 1608 important.exe 38 PID 1608 wrote to memory of 1940 1608 important.exe 38 PID 1608 wrote to memory of 1940 1608 important.exe 38 PID 1608 wrote to memory of 268 1608 important.exe 39 PID 1608 wrote to memory of 268 1608 important.exe 39 PID 1608 wrote to memory of 268 1608 important.exe 39 PID 1608 wrote to memory of 268 1608 important.exe 39 PID 268 wrote to memory of 932 268 cmd.exe 41 PID 268 wrote to memory of 932 268 cmd.exe 41 PID 268 wrote to memory of 932 268 cmd.exe 41 PID 268 wrote to memory of 932 268 cmd.exe 41 PID 1940 wrote to memory of 1852 1940 @[email protected] 43 PID 1940 wrote to memory of 1852 1940 @[email protected] 43 PID 1940 wrote to memory of 1852 1940 @[email protected] 43 PID 1940 wrote to memory of 1852 1940 @[email protected] 43 PID 932 wrote to memory of 364 932 @[email protected] 45 PID 932 wrote to memory of 364 932 @[email protected] 45 PID 932 wrote to memory of 364 932 @[email protected] 45 PID 932 wrote to memory of 364 932 @[email protected] 45 PID 364 wrote to memory of 792 364 cmd.exe 47 PID 364 wrote to memory of 792 364 cmd.exe 47 PID 364 wrote to memory of 792 364 cmd.exe 47 PID 364 wrote to memory of 792 364 cmd.exe 47 PID 364 wrote to memory of 1996 364 cmd.exe 49 PID 364 wrote to memory of 1996 364 cmd.exe 49 PID 364 wrote to memory of 1996 364 cmd.exe 49 PID 364 wrote to memory of 1996 364 cmd.exe 49 PID 1608 wrote to memory of 1272 1608 important.exe 51 PID 1608 wrote to memory of 1272 1608 important.exe 51 PID 1608 wrote to memory of 1272 1608 important.exe 51 PID 1608 wrote to memory of 1272 1608 important.exe 51 PID 1608 wrote to memory of 1628 1608 important.exe 52 PID 1608 wrote to memory of 1628 1608 important.exe 52 PID 1608 wrote to memory of 1628 1608 important.exe 52 PID 1608 wrote to memory of 1628 1608 important.exe 52 PID 1608 wrote to memory of 1820 1608 important.exe 53 PID 1608 wrote to memory of 1820 1608 important.exe 53 PID 1608 wrote to memory of 1820 1608 important.exe 53 PID 1608 wrote to memory of 1820 1608 important.exe 53 PID 1608 wrote to memory of 1832 1608 important.exe 54 PID 1608 wrote to memory of 1832 1608 important.exe 54 PID 1608 wrote to memory of 1832 1608 important.exe 54 PID 1608 wrote to memory of 1832 1608 important.exe 54 -
Views/modifies file attributes 1 TTPs 1 IoCs
pid Process 2036 attrib.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\important.exe"C:\Users\Admin\AppData\Local\Temp\important.exe"1⤵
- Modifies extensions of user files
- Drops startup file
- Loads dropped DLL
- Sets desktop wallpaper using registry
- Suspicious use of WriteProcessMemory
PID:1608 -
C:\Windows\SysWOW64\attrib.exeattrib +h .2⤵
- Views/modifies file attributes
PID:2036
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C:\Windows\SysWOW64\icacls.exeicacls . /grant Everyone:F /T /C /Q2⤵
- Modifies file permissions
PID:1204
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C:\Users\Admin\AppData\Local\Temp\taskdl.exetaskdl.exe2⤵
- Executes dropped EXE
PID:1628
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C:\Windows\SysWOW64\cmd.execmd /c 62651624656015.bat2⤵
- Suspicious use of WriteProcessMemory
PID:1556 -
C:\Windows\SysWOW64\cscript.execscript.exe //nologo m.vbs3⤵
- Loads dropped DLL
PID:1788
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C:\Users\Admin\AppData\Local\Temp\@[email protected]2⤵
- Executes dropped EXE
- Loads dropped DLL
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1940 -
C:\Users\Admin\AppData\Local\Temp\TaskData\Tor\taskhsvc.exeTaskData\Tor\taskhsvc.exe3⤵
- Executes dropped EXE
- Loads dropped DLL
- Suspicious behavior: EnumeratesProcesses
PID:1852
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C:\Windows\SysWOW64\cmd.execmd.exe /c start /b @[email protected] vs2⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:268 -
C:\Users\Admin\AppData\Local\Temp\@[email protected]3⤵
- Executes dropped EXE
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:932 -
C:\Windows\SysWOW64\cmd.execmd.exe /c vssadmin delete shadows /all /quiet & wmic shadowcopy delete & bcdedit /set {default} bootstatuspolicy ignoreallfailures & bcdedit /set {default} recoveryenabled no & wbadmin delete catalog -quiet4⤵
- Suspicious use of WriteProcessMemory
PID:364 -
C:\Windows\SysWOW64\vssadmin.exevssadmin delete shadows /all /quiet5⤵
- Interacts with shadow copies
PID:792
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C:\Windows\SysWOW64\Wbem\WMIC.exewmic shadowcopy delete5⤵
- Suspicious use of AdjustPrivilegeToken
PID:1996
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C:\Users\Admin\AppData\Local\Temp\taskse.exetaskse.exe C:\Users\Admin\AppData\Local\Temp\@[email protected]2⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:1272
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C:\Users\Admin\AppData\Local\Temp\@[email protected]2⤵
- Executes dropped EXE
- Sets desktop wallpaper using registry
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of SetWindowsHookEx
PID:1628
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C:\Windows\SysWOW64\cmd.execmd.exe /c reg add HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Run /v "avwggwjmhgtjt701" /t REG_SZ /d "\"C:\Users\Admin\AppData\Local\Temp\tasksche.exe\"" /f2⤵PID:1820
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C:\Windows\SysWOW64\reg.exereg add HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Run /v "avwggwjmhgtjt701" /t REG_SZ /d "\"C:\Users\Admin\AppData\Local\Temp\tasksche.exe\"" /f3⤵
- Adds Run key to start application
- Modifies registry key
PID:1848
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C:\Users\Admin\AppData\Local\Temp\taskdl.exetaskdl.exe2⤵
- Executes dropped EXE
PID:1832
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C:\Users\Admin\AppData\Local\Temp\taskse.exetaskse.exe C:\Users\Admin\AppData\Local\Temp\@[email protected]2⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:676
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C:\Users\Admin\AppData\Local\Temp\@[email protected]PID:2008
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C:\Users\Admin\AppData\Local\Temp\taskdl.exetaskdl.exe2⤵
- Executes dropped EXE
PID:1640
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C:\Users\Admin\AppData\Local\Temp\taskse.exetaskse.exe C:\Users\Admin\AppData\Local\Temp\@[email protected]2⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:1508
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C:\Users\Admin\AppData\Local\Temp\@[email protected]PID:1348
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C:\Users\Admin\AppData\Local\Temp\taskdl.exetaskdl.exe2⤵
- Executes dropped EXE
PID:548
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C:\Users\Admin\AppData\Local\Temp\taskse.exetaskse.exe C:\Users\Admin\AppData\Local\Temp\@[email protected]2⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:1332
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C:\Users\Admin\AppData\Local\Temp\@[email protected]PID:288
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C:\Users\Admin\AppData\Local\Temp\taskdl.exetaskdl.exe2⤵
- Executes dropped EXE
PID:944
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C:\Windows\system32\vssvc.exeC:\Windows\system32\vssvc.exe1⤵
- Suspicious use of AdjustPrivilegeToken
PID:1944