Analysis
- max time kernel
148s - max time network
148s - platform
windows10_x64 - resource
win10v20210410 - submitted
29/05/2021, 07:01
Static task
static1
Behavioral task
behavioral1
Sample
a51a47dc9871c874291574368331ed76.exe
Resource
win7v20210408
Behavioral task
behavioral2
Sample
a51a47dc9871c874291574368331ed76.exe
Resource
win10v20210410
General
- Target a51a47dc9871c874291574368331ed76.exe
- Size 868KB
- Sample210529-fehf2sv4da
- SHA256 7633b4acaf0a9b58ceb77197cd65aa1279b0eb0b47c503b263a0da486019f717
- MD5 a51a47dc9871c874291574368331ed76
- SHA1 312da86edc860c2779a77e2f3dfce70e3d4d8704
- SHA512 d55441fc80e12006c718f6842ebb2ba1db2de23ff9a8a0be9d4093e8d4cf91b85a3650b44be906c5f94d5019e7802337bcd1d01eb646dee0cea04b021ed9b097
- MD5 SHA1 SHA512
Malware Config
Extracted
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C:\_readme.txt
- ATTENTION! Don't worry, you can return all your files! All your files like pictures, databases, documents and other important are encrypted with strongest encryption and unique key. The only method of recovering files is to purchase decrypt tool and unique key for you. This software will decrypt all your encrypted files. What guarantees you have? You can send one of your encrypted file from your PC and we decrypt it for free. But we can decrypt only 1 file for free. File must not contain valuable information. You can get and look video overview decrypt tool: https://we.tl/t-IMhsjaUZQE Price of private key and decrypt software is $980. Discount 50% available if you contact us first 72 hours, that's price for you is $490. Please note that you'll never restore your data without payment. Check your e-mail "Spam" or "Junk" folder if you don't get answer more than 6 hours. To get this software you need write on our e-mail: [email protected] Reserve e-mail address to contact us: [email protected] Your personal ID: 0299ewgfDdMVRPbSnFtySupDwbPHDki6lHhdaU8yRerXrXB00l
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https://we.tl/t-IMhsjaUZQE
Extracted
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raccoon
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1d76a465540f6a904ac9f1310fe3a3824b5b4549
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url4cnc
https://tttttt.me/kokajakprozak
Signatures
- Deletes Windows Defender Definitions 2 TTPs 1 IoCs
Uses mpcmdrun utility to delete all AV definitions.
pid Process 2300 mpcmdrun.exe - Disables Task Manager via registry modification
- Downloads MZ/PE file
- Drops file in Drivers directory 1 IoCs
description ioc Process File opened for modification C:\Windows\System32\drivers\etc\hosts updatewin2.exe - Executes dropped EXE 7 IoCs
pid Process 2884 updatewin1.exe 3200 updatewin2.exe 2540 updatewin1.exe 3540 5.exe 784 5.exe 2060 a51a47dc9871c874291574368331ed76.exe 2216 a51a47dc9871c874291574368331ed76.exe - Modifies extensions of user files 9 IoCs
Ransomware generally changes the extension on encrypted files.
description ioc Process File renamed C:\Users\Admin\Pictures\StepRename.tif => C:\Users\Admin\Pictures\StepRename.tif.ehiz a51a47dc9871c874291574368331ed76.exe File renamed C:\Users\Admin\Pictures\StepResolve.crw => C:\Users\Admin\Pictures\StepResolve.crw.ehiz a51a47dc9871c874291574368331ed76.exe File renamed C:\Users\Admin\Pictures\UnblockClear.tif => C:\Users\Admin\Pictures\UnblockClear.tif.ehiz a51a47dc9871c874291574368331ed76.exe File renamed C:\Users\Admin\Pictures\ResizeConfirm.tif => C:\Users\Admin\Pictures\ResizeConfirm.tif.ehiz a51a47dc9871c874291574368331ed76.exe File opened for modification C:\Users\Admin\Pictures\LimitEdit.tiff a51a47dc9871c874291574368331ed76.exe File renamed C:\Users\Admin\Pictures\LimitEdit.tiff => C:\Users\Admin\Pictures\LimitEdit.tiff.ehiz a51a47dc9871c874291574368331ed76.exe File renamed C:\Users\Admin\Pictures\RequestSelect.png => C:\Users\Admin\Pictures\RequestSelect.png.ehiz a51a47dc9871c874291574368331ed76.exe File renamed C:\Users\Admin\Pictures\SelectRevoke.tif => C:\Users\Admin\Pictures\SelectRevoke.tif.ehiz a51a47dc9871c874291574368331ed76.exe File renamed C:\Users\Admin\Pictures\ConvertToRepair.crw => C:\Users\Admin\Pictures\ConvertToRepair.crw.ehiz a51a47dc9871c874291574368331ed76.exe - Loads dropped DLL 6 IoCs
pid Process 784 5.exe 784 5.exe 784 5.exe 784 5.exe 784 5.exe 784 5.exe - Modifies file permissions 1 TTPs 1 IoCs
pid Process 3784 icacls.exe - Reads user/profile data of local email clients 2 TTPs
Email clients store some user data on disk where infostealers will often target it.
- Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
- Adds Run key to start application 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-3686645723-710336880-414668232-1000\Software\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\010f0782-038f-4ec9-bcd0-c81a8ac5aa52\\a51a47dc9871c874291574368331ed76.exe\" --AutoStart" a51a47dc9871c874291574368331ed76.exe - Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
- Looks up external IP address via web service 5 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.
flow ioc 20 api.2ip.ua 35 api.2ip.ua 36 api.2ip.ua 10 api.2ip.ua 11 api.2ip.ua - Suspicious use of SetThreadContext 4 IoCs
description pid Process procid_target PID 4036 set thread context of 2528 4036 a51a47dc9871c874291574368331ed76.exe 77 PID 2696 set thread context of 3912 2696 a51a47dc9871c874291574368331ed76.exe 82 PID 3540 set thread context of 784 3540 5.exe 89 PID 2060 set thread context of 2216 2060 a51a47dc9871c874291574368331ed76.exe 103 - Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
- Delays execution with timeout.exe 1 IoCs
pid Process 2292 timeout.exe -
description ioc Process Key created \REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\D1EB23A46D17D68FD92564C2F1F1601764D8E349 a51a47dc9871c874291574368331ed76.exe Set value (data) \REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\D1EB23A46D17D68FD92564C2F1F1601764D8E349\Blob = 5c000000010000000400000000080000090000000100000054000000305206082b0601050507030206082b06010505070303060a2b0601040182370a030406082b0601050507030406082b0601050507030606082b0601050507030706082b0601050507030106082b0601050507030853000000010000004300000030413022060c2b06010401b231010201050130123010060a2b0601040182373c0101030200c0301b060567810c010330123010060a2b0601040182373c0101030200c0620000000100000020000000d7a7a0fb5d7e2731d771e9484ebcdef71d5f0c3e0a2948782bc83ee0ea699ef40b000000010000001c0000005300650063007400690067006f002000280041004100410029000000140000000100000014000000a0110a233e96f107ece2af29ef82a57fd030a4b41d00000001000000100000002e0d6875874a44c820912e85e964cfdb030000000100000014000000d1eb23a46d17d68fd92564c2f1f1601764d8e349200000000100000036040000308204323082031aa003020102020101300d06092a864886f70d0101050500307b310b3009060355040613024742311b301906035504080c1247726561746572204d616e636865737465723110300e06035504070c0753616c666f7264311a3018060355040a0c11436f6d6f646f204341204c696d697465643121301f06035504030c18414141204365727469666963617465205365727669636573301e170d3034303130313030303030305a170d3238313233313233353935395a307b310b3009060355040613024742311b301906035504080c1247726561746572204d616e636865737465723110300e06035504070c0753616c666f7264311a3018060355040a0c11436f6d6f646f204341204c696d697465643121301f06035504030c1841414120436572746966696361746520536572766963657330820122300d06092a864886f70d01010105000382010f003082010a0282010100be409df46ee1ea76871c4d45448ebe46c883069dc12afe181f8ee402faf3ab5d508a16310b9a06d0c57022cd492d5463ccb66e68460b53eacb4c24c0bc724eeaf115aef4549a120ac37ab23360e2da8955f32258f3dedccfef8386a28c944f9f68f29890468427c776bfe3cc352c8b5e07646582c048b0a891f9619f762050a891c766b5eb78620356f08a1a13ea31a31ea099fd38f6f62732586f07f56bb8fb142bafb7aaccd6635f738cda0599a838a8cb17783651ace99ef4783a8dcf0fd942e2980cab2f9f0e01deef9f9949f12ddfac744d1b98b547c5e529d1f99018c7629cbe83c7267b3e8a25c7c0dd9de6356810209d8fd8ded2c3849c0d5ee82fc90203010001a381c03081bd301d0603551d0e04160414a0110a233e96f107ece2af29ef82a57fd030a4b4300e0603551d0f0101ff040403020106300f0603551d130101ff040530030101ff307b0603551d1f047430723038a036a0348632687474703a2f2f63726c2e636f6d6f646f63612e636f6d2f414141436572746966696361746553657276696365732e63726c3036a034a0328630687474703a2f2f63726c2e636f6d6f646f2e6e65742f414141436572746966696361746553657276696365732e63726c300d06092a864886f70d010105050003820101000856fc02f09be8ffa4fad67bc64480ce4fc4c5f60058cca6b6bc1449680476e8e6ee5dec020f60d68d50184f264e01e3e6b0a5eebfbc745441bffdfc12b8c74f5af48960057f60b7054af3f6f1c2bfc4b97486b62d7d6bccd2f346dd2fc6e06ac3c334032c7d96dd5ac20ea70a99c1058bab0c2ff35c3acf6c37550987de53406c58effcb6ab656e04f61bdc3ce05a15c69ed9f15948302165036cece92173ec9b03a1e037ada015188ffaba02cea72ca910132cd4e50826ab229760f8905e74d4a29a53bdf2a968e0a26ec2d76cb1a30f9ebfeb68e756f2aef2e32b383a0981b56b85d7be2ded3f1ab7b263e2f5622c82d46a004150f139839f95e93696986e a51a47dc9871c874291574368331ed76.exe - Suspicious behavior: EnumeratesProcesses 18 IoCs
pid Process 2528 a51a47dc9871c874291574368331ed76.exe 2528 a51a47dc9871c874291574368331ed76.exe 3912 a51a47dc9871c874291574368331ed76.exe 3912 a51a47dc9871c874291574368331ed76.exe 2688 powershell.exe 2688 powershell.exe 2688 powershell.exe 2688 powershell.exe 2684 powershell.exe 2684 powershell.exe 2684 powershell.exe 2204 powershell.exe 2204 powershell.exe 2204 powershell.exe 3912 a51a47dc9871c874291574368331ed76.exe 3912 a51a47dc9871c874291574368331ed76.exe 2216 a51a47dc9871c874291574368331ed76.exe 2216 a51a47dc9871c874291574368331ed76.exe - Suspicious use of AdjustPrivilegeToken 3 IoCs
description pid Process Token: SeDebugPrivilege 2688 powershell.exe Token: SeDebugPrivilege 2684 powershell.exe Token: SeDebugPrivilege 2204 powershell.exe - Suspicious use of WriteProcessMemory 64 IoCs
description pid Process procid_target PID 4036 wrote to memory of 2528 4036 a51a47dc9871c874291574368331ed76.exe 77 PID 4036 wrote to memory of 2528 4036 a51a47dc9871c874291574368331ed76.exe 77 PID 4036 wrote to memory of 2528 4036 a51a47dc9871c874291574368331ed76.exe 77 PID 4036 wrote to memory of 2528 4036 a51a47dc9871c874291574368331ed76.exe 77 PID 4036 wrote to memory of 2528 4036 a51a47dc9871c874291574368331ed76.exe 77 PID 4036 wrote to memory of 2528 4036 a51a47dc9871c874291574368331ed76.exe 77 PID 4036 wrote to memory of 2528 4036 a51a47dc9871c874291574368331ed76.exe 77 PID 4036 wrote to memory of 2528 4036 a51a47dc9871c874291574368331ed76.exe 77 PID 4036 wrote to memory of 2528 4036 a51a47dc9871c874291574368331ed76.exe 77 PID 4036 wrote to memory of 2528 4036 a51a47dc9871c874291574368331ed76.exe 77 PID 2528 wrote to memory of 3784 2528 a51a47dc9871c874291574368331ed76.exe 78 PID 2528 wrote to memory of 3784 2528 a51a47dc9871c874291574368331ed76.exe 78 PID 2528 wrote to memory of 3784 2528 a51a47dc9871c874291574368331ed76.exe 78 PID 2528 wrote to memory of 2696 2528 a51a47dc9871c874291574368331ed76.exe 79 PID 2528 wrote to memory of 2696 2528 a51a47dc9871c874291574368331ed76.exe 79 PID 2528 wrote to memory of 2696 2528 a51a47dc9871c874291574368331ed76.exe 79 PID 2696 wrote to memory of 3912 2696 a51a47dc9871c874291574368331ed76.exe 82 PID 2696 wrote to memory of 3912 2696 a51a47dc9871c874291574368331ed76.exe 82 PID 2696 wrote to memory of 3912 2696 a51a47dc9871c874291574368331ed76.exe 82 PID 2696 wrote to memory of 3912 2696 a51a47dc9871c874291574368331ed76.exe 82 PID 2696 wrote to memory of 3912 2696 a51a47dc9871c874291574368331ed76.exe 82 PID 2696 wrote to memory of 3912 2696 a51a47dc9871c874291574368331ed76.exe 82 PID 2696 wrote to memory of 3912 2696 a51a47dc9871c874291574368331ed76.exe 82 PID 2696 wrote to memory of 3912 2696 a51a47dc9871c874291574368331ed76.exe 82 PID 2696 wrote to memory of 3912 2696 a51a47dc9871c874291574368331ed76.exe 82 PID 2696 wrote to memory of 3912 2696 a51a47dc9871c874291574368331ed76.exe 82 PID 3912 wrote to memory of 2884 3912 a51a47dc9871c874291574368331ed76.exe 83 PID 3912 wrote to memory of 2884 3912 a51a47dc9871c874291574368331ed76.exe 83 PID 3912 wrote to memory of 2884 3912 a51a47dc9871c874291574368331ed76.exe 83 PID 3912 wrote to memory of 3200 3912 a51a47dc9871c874291574368331ed76.exe 84 PID 3912 wrote to memory of 3200 3912 a51a47dc9871c874291574368331ed76.exe 84 PID 3912 wrote to memory of 3200 3912 a51a47dc9871c874291574368331ed76.exe 84 PID 2884 wrote to memory of 2540 2884 updatewin1.exe 85 PID 2884 wrote to memory of 2540 2884 updatewin1.exe 85 PID 2884 wrote to memory of 2540 2884 updatewin1.exe 85 PID 3912 wrote to memory of 3540 3912 a51a47dc9871c874291574368331ed76.exe 86 PID 3912 wrote to memory of 3540 3912 a51a47dc9871c874291574368331ed76.exe 86 PID 3912 wrote to memory of 3540 3912 a51a47dc9871c874291574368331ed76.exe 86 PID 2540 wrote to memory of 2688 2540 updatewin1.exe 87 PID 2540 wrote to memory of 2688 2540 updatewin1.exe 87 PID 2540 wrote to memory of 2688 2540 updatewin1.exe 87 PID 3540 wrote to memory of 784 3540 5.exe 89 PID 3540 wrote to memory of 784 3540 5.exe 89 PID 3540 wrote to memory of 784 3540 5.exe 89 PID 3540 wrote to memory of 784 3540 5.exe 89 PID 3540 wrote to memory of 784 3540 5.exe 89 PID 3540 wrote to memory of 784 3540 5.exe 89 PID 3540 wrote to memory of 784 3540 5.exe 89 PID 3540 wrote to memory of 784 3540 5.exe 89 PID 3540 wrote to memory of 784 3540 5.exe 89 PID 2540 wrote to memory of 2684 2540 updatewin1.exe 90 PID 2540 wrote to memory of 2684 2540 updatewin1.exe 90 PID 2540 wrote to memory of 2684 2540 updatewin1.exe 90 PID 2684 wrote to memory of 2204 2684 powershell.exe 92 PID 2684 wrote to memory of 2204 2684 powershell.exe 92 PID 2684 wrote to memory of 2204 2684 powershell.exe 92 PID 2540 wrote to memory of 2300 2540 updatewin1.exe 94 PID 2540 wrote to memory of 2300 2540 updatewin1.exe 94 PID 2540 wrote to memory of 1696 2540 updatewin1.exe 96 PID 2540 wrote to memory of 1696 2540 updatewin1.exe 96 PID 2540 wrote to memory of 1696 2540 updatewin1.exe 96 PID 784 wrote to memory of 3164 784 5.exe 98 PID 784 wrote to memory of 3164 784 5.exe 98 PID 784 wrote to memory of 3164 784 5.exe 98
Processes
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C:\Users\Admin\AppData\Local\Temp\a51a47dc9871c874291574368331ed76.exe"C:\Users\Admin\AppData\Local\Temp\a51a47dc9871c874291574368331ed76.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4036 -
C:\Users\Admin\AppData\Local\Temp\a51a47dc9871c874291574368331ed76.exe"C:\Users\Admin\AppData\Local\Temp\a51a47dc9871c874291574368331ed76.exe"2⤵
- Adds Run key to start application
- Modifies system certificate store
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:2528 -
C:\Windows\SysWOW64\icacls.exeicacls "C:\Users\Admin\AppData\Local\010f0782-038f-4ec9-bcd0-c81a8ac5aa52" /deny *S-1-1-0:(OI)(CI)(DE,DC)3⤵
- Modifies file permissions
PID:3784
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C:\Users\Admin\AppData\Local\Temp\a51a47dc9871c874291574368331ed76.exe"C:\Users\Admin\AppData\Local\Temp\a51a47dc9871c874291574368331ed76.exe" --Admin IsNotAutoStart IsNotTask3⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2696 -
C:\Users\Admin\AppData\Local\Temp\a51a47dc9871c874291574368331ed76.exe"C:\Users\Admin\AppData\Local\Temp\a51a47dc9871c874291574368331ed76.exe" --Admin IsNotAutoStart IsNotTask4⤵
- Modifies extensions of user files
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:3912 -
C:\Users\Admin\AppData\Local\11def758-c919-48b1-9d5c-02703cd102ae\updatewin1.exe"C:\Users\Admin\AppData\Local\11def758-c919-48b1-9d5c-02703cd102ae\updatewin1.exe"5⤵
- Executes dropped EXE
- Suspicious use of WriteProcessMemory
PID:2884 -
C:\Users\Admin\AppData\Local\11def758-c919-48b1-9d5c-02703cd102ae\updatewin1.exe"C:\Users\Admin\AppData\Local\11def758-c919-48b1-9d5c-02703cd102ae\updatewin1.exe" --Admin6⤵
- Executes dropped EXE
- Suspicious use of WriteProcessMemory
PID:2540 -
C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exepowershell -Command Set-ExecutionPolicy -Scope CurrentUser RemoteSigned7⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:2688
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C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exepowershell -NoProfile -ExecutionPolicy Bypass -Command "& {Start-Process PowerShell -ArgumentList '-NoProfile -ExecutionPolicy Bypass -File ""C:\Users\Admin\AppData\Local\script.ps1""' -Verb RunAs}"7⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2684 -
C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -NoProfile -ExecutionPolicy Bypass -File "C:\Users\Admin\AppData\Local\script.ps18⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:2204
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C:\Program Files\Windows Defender\mpcmdrun.exe"C:\Program Files\Windows Defender\mpcmdrun.exe" -removedefinitions -all7⤵
- Deletes Windows Defender Definitions
PID:2300
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C:\Windows\SysWOW64\cmd.exeC:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\delself.bat""7⤵PID:1696
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C:\Users\Admin\AppData\Local\11def758-c919-48b1-9d5c-02703cd102ae\updatewin2.exe"C:\Users\Admin\AppData\Local\11def758-c919-48b1-9d5c-02703cd102ae\updatewin2.exe"5⤵
- Drops file in Drivers directory
- Executes dropped EXE
PID:3200
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C:\Users\Admin\AppData\Local\11def758-c919-48b1-9d5c-02703cd102ae\5.exe"C:\Users\Admin\AppData\Local\11def758-c919-48b1-9d5c-02703cd102ae\5.exe"5⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:3540 -
C:\Users\Admin\AppData\Local\11def758-c919-48b1-9d5c-02703cd102ae\5.exe"C:\Users\Admin\AppData\Local\11def758-c919-48b1-9d5c-02703cd102ae\5.exe"6⤵
- Executes dropped EXE
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:784 -
C:\Windows\SysWOW64\cmd.execmd.exe /C timeout /T 10 /NOBREAK > Nul & Del /f /q "C:\Users\Admin\AppData\Local\11def758-c919-48b1-9d5c-02703cd102ae\5.exe"7⤵PID:3164
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C:\Windows\SysWOW64\timeout.exetimeout /T 10 /NOBREAK8⤵
- Delays execution with timeout.exe
PID:2292
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C:\Users\Admin\AppData\Local\010f0782-038f-4ec9-bcd0-c81a8ac5aa52\a51a47dc9871c874291574368331ed76.exeC:\Users\Admin\AppData\Local\010f0782-038f-4ec9-bcd0-c81a8ac5aa52\a51a47dc9871c874291574368331ed76.exe --Task1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
PID:2060 -
C:\Users\Admin\AppData\Local\010f0782-038f-4ec9-bcd0-c81a8ac5aa52\a51a47dc9871c874291574368331ed76.exeC:\Users\Admin\AppData\Local\010f0782-038f-4ec9-bcd0-c81a8ac5aa52\a51a47dc9871c874291574368331ed76.exe --Task2⤵
- Executes dropped EXE
- Suspicious behavior: EnumeratesProcesses
PID:2216
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