Analysis
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max time kernel
149s -
max time network
139s -
platform
windows10_x64 -
resource
win10v20201028 -
submitted
18/12/2020, 08:38
Static task
static1
Behavioral task
behavioral1
Sample
WANACRYPTOR.bin.exe
Resource
win7v20201028
Behavioral task
behavioral2
Sample
WANACRYPTOR.bin.exe
Resource
win10v20201028
General
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Target
WANACRYPTOR.bin.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 2504 taskdl.exe 3152 @[email protected] 3520 @[email protected] 416 taskhsvc.exe 2312 taskse.exe 3328 @[email protected] 3656 taskdl.exe 2152 taskdl.exe 3640 taskse.exe 3908 @[email protected] 2640 taskdl.exe 2204 taskse.exe 1540 @[email protected] 2540 taskse.exe 2124 @[email protected] 3808 taskdl.exe -
Modifies extensions of user files 14 IoCs
Ransomware generally changes the extension on encrypted files.
description ioc Process File opened for modification C:\Users\Admin\Pictures\FindPublish.tif.WNCRY WANACRYPTOR.bin.exe File opened for modification C:\Users\Admin\Pictures\RequestRegister.tiff.WNCRY WANACRYPTOR.bin.exe File renamed C:\Users\Admin\Pictures\WaitRestart.tiff.WNCRYT => C:\Users\Admin\Pictures\WaitRestart.tiff.WNCRY WANACRYPTOR.bin.exe File renamed C:\Users\Admin\Pictures\JoinRepair.tif.WNCRYT => C:\Users\Admin\Pictures\JoinRepair.tif.WNCRY WANACRYPTOR.bin.exe File opened for modification C:\Users\Admin\Pictures\JoinRepair.tif.WNCRY WANACRYPTOR.bin.exe File renamed C:\Users\Admin\Pictures\RequestRegister.tiff.WNCRYT => C:\Users\Admin\Pictures\RequestRegister.tiff.WNCRY WANACRYPTOR.bin.exe File opened for modification C:\Users\Admin\Pictures\WaitRestart.tiff.WNCRY WANACRYPTOR.bin.exe File opened for modification C:\Users\Admin\Pictures\RequestRegister.tiff WANACRYPTOR.bin.exe File created C:\Users\Admin\Pictures\FindPublish.tif.WNCRYT WANACRYPTOR.bin.exe File renamed C:\Users\Admin\Pictures\FindPublish.tif.WNCRYT => C:\Users\Admin\Pictures\FindPublish.tif.WNCRY WANACRYPTOR.bin.exe File created C:\Users\Admin\Pictures\JoinRepair.tif.WNCRYT WANACRYPTOR.bin.exe File created C:\Users\Admin\Pictures\RequestRegister.tiff.WNCRYT WANACRYPTOR.bin.exe File created C:\Users\Admin\Pictures\WaitRestart.tiff.WNCRYT WANACRYPTOR.bin.exe File opened for modification C:\Users\Admin\Pictures\WaitRestart.tiff WANACRYPTOR.bin.exe -
Drops startup file 2 IoCs
description ioc Process File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\~SD9474.tmp WANACRYPTOR.bin.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Word\STARTUP\~SD948A.tmp WANACRYPTOR.bin.exe -
Loads dropped DLL 9 IoCs
pid Process 416 taskhsvc.exe 416 taskhsvc.exe 416 taskhsvc.exe 416 taskhsvc.exe 416 taskhsvc.exe 416 taskhsvc.exe 416 taskhsvc.exe 416 taskhsvc.exe 416 taskhsvc.exe -
Modifies file permissions 1 TTPs 1 IoCs
pid Process 3928 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\ykfyrlrehuhmwcj780 = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\tasksche.exe\"" reg.exe -
JavaScript code in executable 5 IoCs
resource yara_rule behavioral2/files/0x000100000001ad28-57.dat js behavioral2/files/0x000100000001ad28-58.dat js behavioral2/files/0x000100000001ad1e-62.dat js behavioral2/files/0x000100000001ad1e-69.dat js behavioral2/files/0x000100000001ad1e-70.dat js -
Sets desktop wallpaper using registry 2 TTPs 2 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-1985363256-3005190890-1182679451-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\Desktop\\@[email protected]" WANACRYPTOR.bin.exe Set value (str) \REGISTRY\USER\S-1-5-21-1985363256-3005190890-1182679451-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\Desktop\\@[email protected]" @[email protected] -
Interacts with shadow copies 2 TTPs 1 IoCs
Shadow copies are often targeted by ransomware to inhibit system recovery.
pid Process 2108 vssadmin.exe -
Modifies registry key 1 TTPs 1 IoCs
pid Process 3876 reg.exe -
Suspicious behavior: EnumeratesProcesses 6 IoCs
pid Process 416 taskhsvc.exe 416 taskhsvc.exe 416 taskhsvc.exe 416 taskhsvc.exe 416 taskhsvc.exe 416 taskhsvc.exe -
Suspicious use of AdjustPrivilegeToken 53 IoCs
description pid Process Token: SeBackupPrivilege 3816 vssvc.exe Token: SeRestorePrivilege 3816 vssvc.exe Token: SeAuditPrivilege 3816 vssvc.exe Token: SeIncreaseQuotaPrivilege 580 WMIC.exe Token: SeSecurityPrivilege 580 WMIC.exe Token: SeTakeOwnershipPrivilege 580 WMIC.exe Token: SeLoadDriverPrivilege 580 WMIC.exe Token: SeSystemProfilePrivilege 580 WMIC.exe Token: SeSystemtimePrivilege 580 WMIC.exe Token: SeProfSingleProcessPrivilege 580 WMIC.exe Token: SeIncBasePriorityPrivilege 580 WMIC.exe Token: SeCreatePagefilePrivilege 580 WMIC.exe Token: SeBackupPrivilege 580 WMIC.exe Token: SeRestorePrivilege 580 WMIC.exe Token: SeShutdownPrivilege 580 WMIC.exe Token: SeDebugPrivilege 580 WMIC.exe Token: SeSystemEnvironmentPrivilege 580 WMIC.exe Token: SeRemoteShutdownPrivilege 580 WMIC.exe Token: SeUndockPrivilege 580 WMIC.exe Token: SeManageVolumePrivilege 580 WMIC.exe Token: 33 580 WMIC.exe Token: 34 580 WMIC.exe Token: 35 580 WMIC.exe Token: 36 580 WMIC.exe Token: SeTcbPrivilege 2312 taskse.exe Token: SeTcbPrivilege 2312 taskse.exe Token: SeIncreaseQuotaPrivilege 580 WMIC.exe Token: SeSecurityPrivilege 580 WMIC.exe Token: SeTakeOwnershipPrivilege 580 WMIC.exe Token: SeLoadDriverPrivilege 580 WMIC.exe Token: SeSystemProfilePrivilege 580 WMIC.exe Token: SeSystemtimePrivilege 580 WMIC.exe Token: SeProfSingleProcessPrivilege 580 WMIC.exe Token: SeIncBasePriorityPrivilege 580 WMIC.exe Token: SeCreatePagefilePrivilege 580 WMIC.exe Token: SeBackupPrivilege 580 WMIC.exe Token: SeRestorePrivilege 580 WMIC.exe Token: SeShutdownPrivilege 580 WMIC.exe Token: SeDebugPrivilege 580 WMIC.exe Token: SeSystemEnvironmentPrivilege 580 WMIC.exe Token: SeRemoteShutdownPrivilege 580 WMIC.exe Token: SeUndockPrivilege 580 WMIC.exe Token: SeManageVolumePrivilege 580 WMIC.exe Token: 33 580 WMIC.exe Token: 34 580 WMIC.exe Token: 35 580 WMIC.exe Token: 36 580 WMIC.exe Token: SeTcbPrivilege 3640 taskse.exe Token: SeTcbPrivilege 3640 taskse.exe Token: SeTcbPrivilege 2204 taskse.exe Token: SeTcbPrivilege 2204 taskse.exe Token: SeTcbPrivilege 2540 taskse.exe Token: SeTcbPrivilege 2540 taskse.exe -
Suspicious use of SetWindowsHookEx 9 IoCs
pid Process 3520 @[email protected] 3152 @[email protected] 3520 @[email protected] 3152 @[email protected] 3328 @[email protected] 3328 @[email protected] 3908 @[email protected] 1540 @[email protected] 2124 @[email protected] -
Suspicious use of WriteProcessMemory 78 IoCs
description pid Process procid_target PID 3116 wrote to memory of 3900 3116 WANACRYPTOR.bin.exe 74 PID 3116 wrote to memory of 3900 3116 WANACRYPTOR.bin.exe 74 PID 3116 wrote to memory of 3900 3116 WANACRYPTOR.bin.exe 74 PID 3116 wrote to memory of 3928 3116 WANACRYPTOR.bin.exe 76 PID 3116 wrote to memory of 3928 3116 WANACRYPTOR.bin.exe 76 PID 3116 wrote to memory of 3928 3116 WANACRYPTOR.bin.exe 76 PID 3116 wrote to memory of 2504 3116 WANACRYPTOR.bin.exe 79 PID 3116 wrote to memory of 2504 3116 WANACRYPTOR.bin.exe 79 PID 3116 wrote to memory of 2504 3116 WANACRYPTOR.bin.exe 79 PID 3116 wrote to memory of 3208 3116 WANACRYPTOR.bin.exe 80 PID 3116 wrote to memory of 3208 3116 WANACRYPTOR.bin.exe 80 PID 3116 wrote to memory of 3208 3116 WANACRYPTOR.bin.exe 80 PID 3208 wrote to memory of 4088 3208 cmd.exe 82 PID 3208 wrote to memory of 4088 3208 cmd.exe 82 PID 3208 wrote to memory of 4088 3208 cmd.exe 82 PID 3116 wrote to memory of 3152 3116 WANACRYPTOR.bin.exe 84 PID 3116 wrote to memory of 3152 3116 WANACRYPTOR.bin.exe 84 PID 3116 wrote to memory of 3152 3116 WANACRYPTOR.bin.exe 84 PID 3116 wrote to memory of 3440 3116 WANACRYPTOR.bin.exe 85 PID 3116 wrote to memory of 3440 3116 WANACRYPTOR.bin.exe 85 PID 3116 wrote to memory of 3440 3116 WANACRYPTOR.bin.exe 85 PID 3440 wrote to memory of 3520 3440 cmd.exe 87 PID 3440 wrote to memory of 3520 3440 cmd.exe 87 PID 3440 wrote to memory of 3520 3440 cmd.exe 87 PID 3152 wrote to memory of 416 3152 @[email protected] 89 PID 3152 wrote to memory of 416 3152 @[email protected] 89 PID 3152 wrote to memory of 416 3152 @[email protected] 89 PID 3520 wrote to memory of 1176 3520 @[email protected] 94 PID 3520 wrote to memory of 1176 3520 @[email protected] 94 PID 3520 wrote to memory of 1176 3520 @[email protected] 94 PID 1176 wrote to memory of 2108 1176 cmd.exe 96 PID 1176 wrote to memory of 2108 1176 cmd.exe 96 PID 1176 wrote to memory of 2108 1176 cmd.exe 96 PID 1176 wrote to memory of 580 1176 cmd.exe 98 PID 1176 wrote to memory of 580 1176 cmd.exe 98 PID 1176 wrote to memory of 580 1176 cmd.exe 98 PID 3116 wrote to memory of 2312 3116 WANACRYPTOR.bin.exe 99 PID 3116 wrote to memory of 2312 3116 WANACRYPTOR.bin.exe 99 PID 3116 wrote to memory of 2312 3116 WANACRYPTOR.bin.exe 99 PID 3116 wrote to memory of 3328 3116 WANACRYPTOR.bin.exe 100 PID 3116 wrote to memory of 3328 3116 WANACRYPTOR.bin.exe 100 PID 3116 wrote to memory of 3328 3116 WANACRYPTOR.bin.exe 100 PID 3116 wrote to memory of 3656 3116 WANACRYPTOR.bin.exe 102 PID 3116 wrote to memory of 3656 3116 WANACRYPTOR.bin.exe 102 PID 3116 wrote to memory of 3656 3116 WANACRYPTOR.bin.exe 102 PID 3116 wrote to memory of 2288 3116 WANACRYPTOR.bin.exe 101 PID 3116 wrote to memory of 2288 3116 WANACRYPTOR.bin.exe 101 PID 3116 wrote to memory of 2288 3116 WANACRYPTOR.bin.exe 101 PID 2288 wrote to memory of 3876 2288 cmd.exe 104 PID 2288 wrote to memory of 3876 2288 cmd.exe 104 PID 2288 wrote to memory of 3876 2288 cmd.exe 104 PID 3116 wrote to memory of 2152 3116 WANACRYPTOR.bin.exe 107 PID 3116 wrote to memory of 2152 3116 WANACRYPTOR.bin.exe 107 PID 3116 wrote to memory of 2152 3116 WANACRYPTOR.bin.exe 107 PID 3116 wrote to memory of 3640 3116 WANACRYPTOR.bin.exe 108 PID 3116 wrote to memory of 3640 3116 WANACRYPTOR.bin.exe 108 PID 3116 wrote to memory of 3640 3116 WANACRYPTOR.bin.exe 108 PID 3116 wrote to memory of 3908 3116 WANACRYPTOR.bin.exe 109 PID 3116 wrote to memory of 3908 3116 WANACRYPTOR.bin.exe 109 PID 3116 wrote to memory of 3908 3116 WANACRYPTOR.bin.exe 109 PID 3116 wrote to memory of 2640 3116 WANACRYPTOR.bin.exe 111 PID 3116 wrote to memory of 2640 3116 WANACRYPTOR.bin.exe 111 PID 3116 wrote to memory of 2640 3116 WANACRYPTOR.bin.exe 111 PID 3116 wrote to memory of 2204 3116 WANACRYPTOR.bin.exe 112 PID 3116 wrote to memory of 2204 3116 WANACRYPTOR.bin.exe 112 PID 3116 wrote to memory of 2204 3116 WANACRYPTOR.bin.exe 112 PID 3116 wrote to memory of 1540 3116 WANACRYPTOR.bin.exe 113 PID 3116 wrote to memory of 1540 3116 WANACRYPTOR.bin.exe 113 PID 3116 wrote to memory of 1540 3116 WANACRYPTOR.bin.exe 113 PID 3116 wrote to memory of 2540 3116 WANACRYPTOR.bin.exe 114 PID 3116 wrote to memory of 2540 3116 WANACRYPTOR.bin.exe 114 PID 3116 wrote to memory of 2540 3116 WANACRYPTOR.bin.exe 114 PID 3116 wrote to memory of 2124 3116 WANACRYPTOR.bin.exe 115 PID 3116 wrote to memory of 2124 3116 WANACRYPTOR.bin.exe 115 PID 3116 wrote to memory of 2124 3116 WANACRYPTOR.bin.exe 115 PID 3116 wrote to memory of 3808 3116 WANACRYPTOR.bin.exe 116 PID 3116 wrote to memory of 3808 3116 WANACRYPTOR.bin.exe 116 PID 3116 wrote to memory of 3808 3116 WANACRYPTOR.bin.exe 116 -
Views/modifies file attributes 1 TTPs 1 IoCs
pid Process 3900 attrib.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\WANACRYPTOR.bin.exe"C:\Users\Admin\AppData\Local\Temp\WANACRYPTOR.bin.exe"1⤵
- Modifies extensions of user files
- Drops startup file
- Sets desktop wallpaper using registry
- Suspicious use of WriteProcessMemory
PID:3116 -
C:\Windows\SysWOW64\attrib.exeattrib +h .2⤵
- Views/modifies file attributes
PID:3900
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C:\Windows\SysWOW64\icacls.exeicacls . /grant Everyone:F /T /C /Q2⤵
- Modifies file permissions
PID:3928
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C:\Users\Admin\AppData\Local\Temp\taskdl.exetaskdl.exe2⤵
- Executes dropped EXE
PID:2504
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C:\Windows\SysWOW64\cmd.exeC:\Windows\system32\cmd.exe /c 150141608284113.bat2⤵
- Suspicious use of WriteProcessMemory
PID:3208 -
C:\Windows\SysWOW64\cscript.execscript.exe //nologo m.vbs3⤵PID:4088
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C:\Users\Admin\AppData\Local\Temp\@[email protected]2⤵
- Executes dropped EXE
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3152 -
C:\Users\Admin\AppData\Local\Temp\TaskData\Tor\taskhsvc.exeTaskData\Tor\taskhsvc.exe3⤵
- Executes dropped EXE
- Loads dropped DLL
- Suspicious behavior: EnumeratesProcesses
PID:416
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C:\Windows\SysWOW64\cmd.exePID:3440
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C:\Users\Admin\AppData\Local\Temp\@[email protected]3⤵
- Executes dropped EXE
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3520 -
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:1176 -
C:\Windows\SysWOW64\vssadmin.exevssadmin delete shadows /all /quiet5⤵
- Interacts with shadow copies
PID:2108
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C:\Windows\SysWOW64\Wbem\WMIC.exewmic shadowcopy delete5⤵
- Suspicious use of AdjustPrivilegeToken
PID:580
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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:2312
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C:\Users\Admin\AppData\Local\Temp\@[email protected]2⤵
- Executes dropped EXE
- Sets desktop wallpaper using registry
- Suspicious use of SetWindowsHookEx
PID:3328
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C:\Windows\SysWOW64\cmd.execmd.exe /c reg add HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Run /v "ykfyrlrehuhmwcj780" /t REG_SZ /d "\"C:\Users\Admin\AppData\Local\Temp\tasksche.exe\"" /f2⤵
- Suspicious use of WriteProcessMemory
PID:2288 -
C:\Windows\SysWOW64\reg.exereg add HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Run /v "ykfyrlrehuhmwcj780" /t REG_SZ /d "\"C:\Users\Admin\AppData\Local\Temp\tasksche.exe\"" /f3⤵
- Adds Run key to start application
- Modifies registry key
PID:3876
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C:\Users\Admin\AppData\Local\Temp\taskdl.exetaskdl.exe2⤵
- Executes dropped EXE
PID:3656
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C:\Users\Admin\AppData\Local\Temp\taskdl.exetaskdl.exe2⤵
- Executes dropped EXE
PID:2152
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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:3640
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C:\Users\Admin\AppData\Local\Temp\@[email protected]PID:3908
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C:\Users\Admin\AppData\Local\Temp\taskdl.exetaskdl.exe2⤵
- Executes dropped EXE
PID:2640
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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:2204
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C:\Users\Admin\AppData\Local\Temp\@[email protected]PID:1540
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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:2540
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C:\Users\Admin\AppData\Local\Temp\@[email protected]PID:2124
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C:\Users\Admin\AppData\Local\Temp\taskdl.exetaskdl.exe2⤵
- Executes dropped EXE
PID:3808
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C:\Windows\system32\vssvc.exeC:\Windows\system32\vssvc.exe1⤵
- Suspicious use of AdjustPrivilegeToken
PID:3816