Analysis
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max time kernel
19s -
max time network
112s -
platform
windows10_x64 -
resource
win10v20201028 -
submitted
10-03-2021 23:23
Static task
static1
Behavioral task
behavioral1
Sample
dubi.exe
Resource
win7v20201028
Behavioral task
behavioral2
Sample
dubi.exe
Resource
win10v20201028
General
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Target
dubi.exe
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Size
827KB
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MD5
648f0d37b65ec97fd1754d53d78a6a24
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SHA1
ba9c8a94d83f66f93523345aa7fe266cf9769a0e
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SHA256
894efce31cc70924a097c89b02eb544cb1303268b569f39ccbfba492d6c2b166
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SHA512
e222e2ef11a00605575bc8431587f9e89dbd6c3579f43cd36c97527385c85e837f831a583ede7a4c3413f6c0c8ff2139c4b1e4821224c6e4f57eb5cd18fe8410
Malware Config
Signatures
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Executes dropped EXE 2 IoCs
Processes:
updatewin.exe5.exepid Process 1860 updatewin.exe 3488 5.exe -
Loads dropped DLL 2 IoCs
Processes:
5.exepid Process 3488 5.exe 3488 5.exe -
Modifies file permissions 1 TTPs 1 IoCs
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Reads local data of messenger clients 2 TTPs
Infostealers often target stored data of messaging applications, which can include saved credentials and account information.
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Reads user/profile data of local email clients 2 TTPs
Email clients store some user data on disk where infostealers will often target it.
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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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Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
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Adds Run key to start application 2 TTPs 1 IoCs
Processes:
dubi.exedescription ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-3341490333-719741536-2920803124-1000\Software\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\92a0a174-cb1b-436a-9a18-92e6b32169be\\dubi.exe\" --AutoStart" dubi.exe -
Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
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Looks up external IP address via web service 3 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.
Processes:
flow ioc 10 api.2ip.ua 11 api.2ip.ua 20 api.2ip.ua -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
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Checks processor information in registry 2 TTPs 2 IoCs
Processor information is often read in order to detect sandboxing environments.
Processes:
5.exedescription ioc Process Key opened \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0 5.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString 5.exe -
Delays execution with timeout.exe 2 IoCs
Processes:
timeout.exetimeout.exepid Process 4392 timeout.exe 1588 timeout.exe -
Kills process with taskkill 1 IoCs
Processes:
taskkill.exepid Process 1220 taskkill.exe -
Processes:
dubi.exedescription ioc Process Key created \REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\D1EB23A46D17D68FD92564C2F1F1601764D8E349 dubi.exe Set value (data) \REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\D1EB23A46D17D68FD92564C2F1F1601764D8E349\Blob = 5c000000010000000400000000080000090000000100000054000000305206082b0601050507030206082b06010505070303060a2b0601040182370a030406082b0601050507030406082b0601050507030606082b0601050507030706082b0601050507030106082b0601050507030853000000010000004300000030413022060c2b06010401b231010201050130123010060a2b0601040182373c0101030200c0301b060567810c010330123010060a2b0601040182373c0101030200c0620000000100000020000000d7a7a0fb5d7e2731d771e9484ebcdef71d5f0c3e0a2948782bc83ee0ea699ef40b000000010000001c0000005300650063007400690067006f002000280041004100410029000000140000000100000014000000a0110a233e96f107ece2af29ef82a57fd030a4b41d00000001000000100000002e0d6875874a44c820912e85e964cfdb030000000100000014000000d1eb23a46d17d68fd92564c2f1f1601764d8e349200000000100000036040000308204323082031aa003020102020101300d06092a864886f70d0101050500307b310b3009060355040613024742311b301906035504080c1247726561746572204d616e636865737465723110300e06035504070c0753616c666f7264311a3018060355040a0c11436f6d6f646f204341204c696d697465643121301f06035504030c18414141204365727469666963617465205365727669636573301e170d3034303130313030303030305a170d3238313233313233353935395a307b310b3009060355040613024742311b301906035504080c1247726561746572204d616e636865737465723110300e06035504070c0753616c666f7264311a3018060355040a0c11436f6d6f646f204341204c696d697465643121301f06035504030c1841414120436572746966696361746520536572766963657330820122300d06092a864886f70d01010105000382010f003082010a0282010100be409df46ee1ea76871c4d45448ebe46c883069dc12afe181f8ee402faf3ab5d508a16310b9a06d0c57022cd492d5463ccb66e68460b53eacb4c24c0bc724eeaf115aef4549a120ac37ab23360e2da8955f32258f3dedccfef8386a28c944f9f68f29890468427c776bfe3cc352c8b5e07646582c048b0a891f9619f762050a891c766b5eb78620356f08a1a13ea31a31ea099fd38f6f62732586f07f56bb8fb142bafb7aaccd6635f738cda0599a838a8cb17783651ace99ef4783a8dcf0fd942e2980cab2f9f0e01deef9f9949f12ddfac744d1b98b547c5e529d1f99018c7629cbe83c7267b3e8a25c7c0dd9de6356810209d8fd8ded2c3849c0d5ee82fc90203010001a381c03081bd301d0603551d0e04160414a0110a233e96f107ece2af29ef82a57fd030a4b4300e0603551d0f0101ff040403020106300f0603551d130101ff040530030101ff307b0603551d1f047430723038a036a0348632687474703a2f2f63726c2e636f6d6f646f63612e636f6d2f414141436572746966696361746553657276696365732e63726c3036a034a0328630687474703a2f2f63726c2e636f6d6f646f2e6e65742f414141436572746966696361746553657276696365732e63726c300d06092a864886f70d010105050003820101000856fc02f09be8ffa4fad67bc64480ce4fc4c5f60058cca6b6bc1449680476e8e6ee5dec020f60d68d50184f264e01e3e6b0a5eebfbc745441bffdfc12b8c74f5af48960057f60b7054af3f6f1c2bfc4b97486b62d7d6bccd2f346dd2fc6e06ac3c334032c7d96dd5ac20ea70a99c1058bab0c2ff35c3acf6c37550987de53406c58effcb6ab656e04f61bdc3ce05a15c69ed9f15948302165036cece92173ec9b03a1e037ada015188ffaba02cea72ca910132cd4e50826ab229760f8905e74d4a29a53bdf2a968e0a26ec2d76cb1a30f9ebfeb68e756f2aef2e32b383a0981b56b85d7be2ded3f1ab7b263e2f5622c82d46a004150f139839f95e93696986e dubi.exe -
Suspicious behavior: EnumeratesProcesses 12 IoCs
Processes:
dubi.exedubi.exe5.exepid Process 4648 dubi.exe 4648 dubi.exe 4240 dubi.exe 4240 dubi.exe 3488 5.exe 3488 5.exe 3488 5.exe 3488 5.exe 3488 5.exe 3488 5.exe 3488 5.exe 3488 5.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
Processes:
taskkill.exedescription pid Process Token: SeDebugPrivilege 1220 taskkill.exe -
Suspicious use of WriteProcessMemory 27 IoCs
Processes:
dubi.exedubi.exeupdatewin.execmd.exe5.execmd.exedescription pid Process procid_target PID 4648 wrote to memory of 3688 4648 dubi.exe 75 PID 4648 wrote to memory of 3688 4648 dubi.exe 75 PID 4648 wrote to memory of 3688 4648 dubi.exe 75 PID 4648 wrote to memory of 4240 4648 dubi.exe 76 PID 4648 wrote to memory of 4240 4648 dubi.exe 76 PID 4648 wrote to memory of 4240 4648 dubi.exe 76 PID 4240 wrote to memory of 1860 4240 dubi.exe 78 PID 4240 wrote to memory of 1860 4240 dubi.exe 78 PID 4240 wrote to memory of 1860 4240 dubi.exe 78 PID 4240 wrote to memory of 3488 4240 dubi.exe 79 PID 4240 wrote to memory of 3488 4240 dubi.exe 79 PID 4240 wrote to memory of 3488 4240 dubi.exe 79 PID 1860 wrote to memory of 4416 1860 updatewin.exe 82 PID 1860 wrote to memory of 4416 1860 updatewin.exe 82 PID 1860 wrote to memory of 4416 1860 updatewin.exe 82 PID 4416 wrote to memory of 4392 4416 cmd.exe 84 PID 4416 wrote to memory of 4392 4416 cmd.exe 84 PID 4416 wrote to memory of 4392 4416 cmd.exe 84 PID 3488 wrote to memory of 364 3488 5.exe 86 PID 3488 wrote to memory of 364 3488 5.exe 86 PID 3488 wrote to memory of 364 3488 5.exe 86 PID 364 wrote to memory of 1220 364 cmd.exe 88 PID 364 wrote to memory of 1220 364 cmd.exe 88 PID 364 wrote to memory of 1220 364 cmd.exe 88 PID 364 wrote to memory of 1588 364 cmd.exe 90 PID 364 wrote to memory of 1588 364 cmd.exe 90 PID 364 wrote to memory of 1588 364 cmd.exe 90
Processes
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C:\Users\Admin\AppData\Local\Temp\dubi.exe"C:\Users\Admin\AppData\Local\Temp\dubi.exe"1⤵
- Adds Run key to start application
- Modifies system certificate store
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:4648 -
C:\Windows\SysWOW64\icacls.exeicacls "C:\Users\Admin\AppData\Local\92a0a174-cb1b-436a-9a18-92e6b32169be" /deny *S-1-1-0:(OI)(CI)(DE,DC)2⤵
- Modifies file permissions
PID:3688
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C:\Users\Admin\AppData\Local\Temp\dubi.exe"C:\Users\Admin\AppData\Local\Temp\dubi.exe" --Admin IsNotAutoStart IsNotTask2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:4240 -
C:\Users\Admin\AppData\Local\bd3fc194-0f76-4e55-90d6-f315c1a9b39e\updatewin.exe"C:\Users\Admin\AppData\Local\bd3fc194-0f76-4e55-90d6-f315c1a9b39e\updatewin.exe"3⤵
- Executes dropped EXE
- Suspicious use of WriteProcessMemory
PID:1860 -
C:\Windows\SysWOW64\cmd.exe/c timeout /t 3 & del /f /q C:\Users\Admin\AppData\Local\bd3fc194-0f76-4e55-90d6-f315c1a9b39e\updatewin.exe4⤵
- Suspicious use of WriteProcessMemory
PID:4416 -
C:\Windows\SysWOW64\timeout.exetimeout /t 35⤵
- Delays execution with timeout.exe
PID:4392
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C:\Users\Admin\AppData\Local\bd3fc194-0f76-4e55-90d6-f315c1a9b39e\5.exe"C:\Users\Admin\AppData\Local\bd3fc194-0f76-4e55-90d6-f315c1a9b39e\5.exe"3⤵
- Executes dropped EXE
- Loads dropped DLL
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:3488 -
C:\Windows\SysWOW64\cmd.exe"C:\Windows\System32\cmd.exe" /c taskkill /im 5.exe /f & timeout /t 6 & del /f /q "C:\Users\Admin\AppData\Local\bd3fc194-0f76-4e55-90d6-f315c1a9b39e\5.exe" & del C:\ProgramData\*.dll & exit4⤵
- Suspicious use of WriteProcessMemory
PID:364 -
C:\Windows\SysWOW64\taskkill.exetaskkill /im 5.exe /f5⤵
- Kills process with taskkill
- Suspicious use of AdjustPrivilegeToken
PID:1220
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C:\Windows\SysWOW64\timeout.exetimeout /t 65⤵
- Delays execution with timeout.exe
PID:1588
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
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MD5
ef2834ac4ee7d6724f255beaf527e635
SHA15be8c1e73a21b49f353c2ecfa4108e43a883cb7b
SHA256a770ecba3b08bbabd0a567fc978e50615f8b346709f8eb3cfacf3faab24090ba
SHA512c6ea0e4347cbd7ef5e80ae8c0afdca20ea23ac2bdd963361dfaf562a9aed58dcbc43f89dd826692a064d76c3f4b3e92361af7b79a6d16a75d9951591ae3544d2
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MD5
8f73c08a9660691143661bf7332c3c27
SHA137fa65dd737c50fda710fdbde89e51374d0c204a
SHA2563fe6b1c54b8cf28f571e0c5d6636b4069a8ab00b4f11dd842cfec00691d0c9cd
SHA5120042ecf9b3571bb5eba2de893e8b2371df18f7c5a589f52ee66e4bfbaa15a5b8b7cc6a155792aaa8988528c27196896d5e82e1751c998bacea0d92395f66ad89
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MD5
109f0f02fd37c84bfc7508d4227d7ed5
SHA1ef7420141bb15ac334d3964082361a460bfdb975
SHA256334e69ac9367f708ce601a6f490ff227d6c20636da5222f148b25831d22e13d4
SHA51246eb62b65817365c249b48863d894b4669e20fcb3992e747cd5c9fdd57968e1b2cf7418d1c9340a89865eadda362b8db51947eb4427412eb83b35994f932fd39
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MD5
bfac4e3c5908856ba17d41edcd455a51
SHA18eec7e888767aa9e4cca8ff246eb2aacb9170428
SHA256e2935b5b28550d47dc971f456d6961f20d1633b4892998750140e0eaa9ae9d78
SHA5122565bab776c4d732ffb1f9b415992a4c65b81bcd644a9a1df1333a269e322925fc1df4f76913463296efd7c88ef194c3056de2f1ca1357d7b5fe5ff0da877a66
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MD5
a2ee53de9167bf0d6c019303b7ca84e5
SHA12a3c737fa1157e8483815e98b666408a18c0db42
SHA25643536adef2ddcc811c28d35fa6ce3031029a2424ad393989db36169ff2995083
SHA51245b56432244f86321fa88fbcca6a0d2a2f7f4e0648c1d7d7b1866adc9daa5eddd9f6bb73662149f279c9ab60930dad1113c8337cb5e6ec9eed5048322f65f7d8
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MD5
7587bf9cb4147022cd5681b015183046
SHA1f2106306a8f6f0da5afb7fc765cfa0757ad5a628
SHA256c40bb03199a2054dabfc7a8e01d6098e91de7193619effbd0f142a7bf031c14d
SHA5120b63e4979846ceba1b1ed8470432ea6aa18cca66b5f5322d17b14bc0dfa4b2ee09ca300a016e16a01db5123e4e022820698f46d9bad1078bd24675b4b181e91f
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C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\07CEF2F654E3ED6050FFC9B6EB844250_3431D4C539FB2CFCB781821E9902850D
MD54c9af35a7edd6351ed1b0369aa5fdaad
SHA1a31deacfdba98949799105169f460234a356d1b6
SHA256272b1eae7ab0152427b63c9f44b954394ce8e69b39e60f4d768b00b1d6365d6c
SHA512928cc4be39b1dca84af72b09067b1553ce04cac8020aba3e2f37023fb396a792ddacde4d68121d4736311aa8dd761fcc161f52224d243ae68cd6d5f6fe8a038d
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C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\B2FAF7692FD9FFBD64EDE317E42334BA_D7393C8F62BDE4D4CB606228BC7A711E
MD5a4f1a3227ff7283cc8dd2f9e68025e12
SHA167c2de733b15f65c5157a6d495534ebdd00311c2
SHA256f0e3107fe54fa10875ee7b53675713b6835c31e21d4f2c6c00880fa1b7166982
SHA5123d66e1cc35685bb0ceac80e368b0743582046f3d3a6566486aeb4f956473f17dde1ef1dbd6a584ef2492e6bf0555068e0d672fa34194a6b9f37a19134670f10e
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C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\07CEF2F654E3ED6050FFC9B6EB844250_3431D4C539FB2CFCB781821E9902850D
MD50c6e932ad785f3658855033f3875ab22
SHA1df0bb203d160e17ef2595b10393bf4d9b0e1a2f2
SHA25639010bc9b43d70f35798ce822e00993b2b6d48ddd3fcaa7f53997dd0ba9c8fab
SHA512b546fadba1d1501d1b137717747c4186684868b7b98db75d765242e110a48247b4545eb507c4cdfdf46e6317890dbd14b09d7a72e0fb11c5c111b080769511ef
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C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\B2FAF7692FD9FFBD64EDE317E42334BA_D7393C8F62BDE4D4CB606228BC7A711E
MD5689eb9f15bee174f50b07b83fea252fc
SHA12c685acc250896f4f033e0cc6ea606ca26c2722d
SHA2564391227edeba723fd9350e389f1f3838f1186ad9654e3501af17263ce8206b85
SHA51267f82bf8e8d4f0862924edf86e12b5fb9f8f5f4e1386facf7f9263984b2f43480a13185ba5f658a8b6d0021acef03ecebd7153dbf522fc614ae2a052d3b343a7
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MD5
648f0d37b65ec97fd1754d53d78a6a24
SHA1ba9c8a94d83f66f93523345aa7fe266cf9769a0e
SHA256894efce31cc70924a097c89b02eb544cb1303268b569f39ccbfba492d6c2b166
SHA512e222e2ef11a00605575bc8431587f9e89dbd6c3579f43cd36c97527385c85e837f831a583ede7a4c3413f6c0c8ff2139c4b1e4821224c6e4f57eb5cd18fe8410
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MD5
6a50d5e91b193be284aa02106ee35e97
SHA1097137cb64eb18ce55c13f1e841d5312d07fbbf4
SHA25682c1ccbd7db7615a982f7b8072784575972aff3f0ab4597efda9d2e7ca17b961
SHA5127f79ef4c3b2cd32e6e1fe6c64d1a693115789665f705144cb912500f25f669f28ac61f709d29057b66bf2a6c1f8376b3a8ef7ccb95668cabf2d15455745f1f03
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MD5
6a50d5e91b193be284aa02106ee35e97
SHA1097137cb64eb18ce55c13f1e841d5312d07fbbf4
SHA25682c1ccbd7db7615a982f7b8072784575972aff3f0ab4597efda9d2e7ca17b961
SHA5127f79ef4c3b2cd32e6e1fe6c64d1a693115789665f705144cb912500f25f669f28ac61f709d29057b66bf2a6c1f8376b3a8ef7ccb95668cabf2d15455745f1f03
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MD5
9010fa92cc83afe00fab38703e6ffa77
SHA14d603ec27d02d84a65d1555c2df0896d7675fafc
SHA25638e6f4d8f53e8a38950594d9588cb00218bf46113c51b5241771181a521b9c75
SHA512a39ea249da189fedd5f8d1c13d03693626c70ba08c69c4ec76396d3475c5480e98c8dba1da0b74089252d8d781fc050e4eed9346b648ccbb42e22cf6d15399e8
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MD5
9010fa92cc83afe00fab38703e6ffa77
SHA14d603ec27d02d84a65d1555c2df0896d7675fafc
SHA25638e6f4d8f53e8a38950594d9588cb00218bf46113c51b5241771181a521b9c75
SHA512a39ea249da189fedd5f8d1c13d03693626c70ba08c69c4ec76396d3475c5480e98c8dba1da0b74089252d8d781fc050e4eed9346b648ccbb42e22cf6d15399e8
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MD5
8f73c08a9660691143661bf7332c3c27
SHA137fa65dd737c50fda710fdbde89e51374d0c204a
SHA2563fe6b1c54b8cf28f571e0c5d6636b4069a8ab00b4f11dd842cfec00691d0c9cd
SHA5120042ecf9b3571bb5eba2de893e8b2371df18f7c5a589f52ee66e4bfbaa15a5b8b7cc6a155792aaa8988528c27196896d5e82e1751c998bacea0d92395f66ad89
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MD5
bfac4e3c5908856ba17d41edcd455a51
SHA18eec7e888767aa9e4cca8ff246eb2aacb9170428
SHA256e2935b5b28550d47dc971f456d6961f20d1633b4892998750140e0eaa9ae9d78
SHA5122565bab776c4d732ffb1f9b415992a4c65b81bcd644a9a1df1333a269e322925fc1df4f76913463296efd7c88ef194c3056de2f1ca1357d7b5fe5ff0da877a66