Analysis
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max time kernel
67s -
max time network
151s -
platform
windows10_x64 -
resource
win10v20201028 -
submitted
09-03-2021 12:58
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
698KB
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MD5
839609b011f03a293a0573ea5fb1277e
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SHA1
fe48ac0a84e79bc2dd0024e55a62e86b077f8c12
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SHA256
d466ef9698569363af4f08b64235817c7838c726c1faee300582aab3d90f5683
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SHA512
526f6345e367950bc775213663fd68bd7bae2b82c71df70e8589dccc173da66af0171183c4abc4a102e45e151453ff8a8d67c2e4c8fcf72c54d85def22d37ac4
Malware Config
Signatures
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Executes dropped EXE 2 IoCs
Processes:
updatewin.exe5.exepid process 1904 updatewin.exe 1504 5.exe -
Loads dropped DLL 2 IoCs
Processes:
5.exepid process 1504 5.exe 1504 5.exe -
Modifies file permissions 1 TTPs 1 IoCs
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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-1-5-21-1985363256-3005190890-1182679451-1000\Software\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\556e4a1b-f0ae-42e9-bae4-cb4ebcfa510d\\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 11 api.2ip.ua 12 api.2ip.ua 21 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 2976 timeout.exe 1508 timeout.exe -
Kills process with taskkill 1 IoCs
Processes:
taskkill.exepid process 3604 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 = 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 dubi.exe -
Suspicious behavior: EnumeratesProcesses 12 IoCs
Processes:
dubi.exedubi.exe5.exepid process 728 dubi.exe 728 dubi.exe 576 dubi.exe 576 dubi.exe 1504 5.exe 1504 5.exe 1504 5.exe 1504 5.exe 1504 5.exe 1504 5.exe 1504 5.exe 1504 5.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
Processes:
taskkill.exedescription pid process Token: SeDebugPrivilege 3604 taskkill.exe -
Suspicious use of WriteProcessMemory 27 IoCs
Processes:
dubi.exedubi.exeupdatewin.execmd.exe5.execmd.exedescription pid process target process PID 728 wrote to memory of 2568 728 dubi.exe icacls.exe PID 728 wrote to memory of 2568 728 dubi.exe icacls.exe PID 728 wrote to memory of 2568 728 dubi.exe icacls.exe PID 728 wrote to memory of 576 728 dubi.exe dubi.exe PID 728 wrote to memory of 576 728 dubi.exe dubi.exe PID 728 wrote to memory of 576 728 dubi.exe dubi.exe PID 576 wrote to memory of 1904 576 dubi.exe updatewin.exe PID 576 wrote to memory of 1904 576 dubi.exe updatewin.exe PID 576 wrote to memory of 1904 576 dubi.exe updatewin.exe PID 576 wrote to memory of 1504 576 dubi.exe 5.exe PID 576 wrote to memory of 1504 576 dubi.exe 5.exe PID 576 wrote to memory of 1504 576 dubi.exe 5.exe PID 1904 wrote to memory of 2900 1904 updatewin.exe cmd.exe PID 1904 wrote to memory of 2900 1904 updatewin.exe cmd.exe PID 1904 wrote to memory of 2900 1904 updatewin.exe cmd.exe PID 2900 wrote to memory of 2976 2900 cmd.exe timeout.exe PID 2900 wrote to memory of 2976 2900 cmd.exe timeout.exe PID 2900 wrote to memory of 2976 2900 cmd.exe timeout.exe PID 1504 wrote to memory of 1840 1504 5.exe cmd.exe PID 1504 wrote to memory of 1840 1504 5.exe cmd.exe PID 1504 wrote to memory of 1840 1504 5.exe cmd.exe PID 1840 wrote to memory of 3604 1840 cmd.exe taskkill.exe PID 1840 wrote to memory of 3604 1840 cmd.exe taskkill.exe PID 1840 wrote to memory of 3604 1840 cmd.exe taskkill.exe PID 1840 wrote to memory of 1508 1840 cmd.exe timeout.exe PID 1840 wrote to memory of 1508 1840 cmd.exe timeout.exe PID 1840 wrote to memory of 1508 1840 cmd.exe timeout.exe
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:728 -
C:\Windows\SysWOW64\icacls.exeicacls "C:\Users\Admin\AppData\Local\556e4a1b-f0ae-42e9-bae4-cb4ebcfa510d" /deny *S-1-1-0:(OI)(CI)(DE,DC)2⤵
- Modifies file permissions
PID:2568
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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:576 -
C:\Users\Admin\AppData\Local\34290c94-8201-4e5a-8cc2-25c5d973227a\updatewin.exe"C:\Users\Admin\AppData\Local\34290c94-8201-4e5a-8cc2-25c5d973227a\updatewin.exe"3⤵
- Executes dropped EXE
- Suspicious use of WriteProcessMemory
PID:1904 -
C:\Windows\SysWOW64\cmd.exe/c timeout /t 3 & del /f /q C:\Users\Admin\AppData\Local\34290c94-8201-4e5a-8cc2-25c5d973227a\updatewin.exe4⤵
- Suspicious use of WriteProcessMemory
PID:2900 -
C:\Windows\SysWOW64\timeout.exetimeout /t 35⤵
- Delays execution with timeout.exe
PID:2976
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C:\Users\Admin\AppData\Local\34290c94-8201-4e5a-8cc2-25c5d973227a\5.exe"C:\Users\Admin\AppData\Local\34290c94-8201-4e5a-8cc2-25c5d973227a\5.exe"3⤵
- Executes dropped EXE
- Loads dropped DLL
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:1504 -
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\34290c94-8201-4e5a-8cc2-25c5d973227a\5.exe" & del C:\ProgramData\*.dll & exit4⤵
- Suspicious use of WriteProcessMemory
PID:1840 -
C:\Windows\SysWOW64\taskkill.exetaskkill /im 5.exe /f5⤵
- Kills process with taskkill
- Suspicious use of AdjustPrivilegeToken
PID:3604
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C:\Windows\SysWOW64\timeout.exetimeout /t 65⤵
- Delays execution with timeout.exe
PID:1508
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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
MD5f1405cbe9a463ec9abba40056ae1249e
SHA1102894b2526d4f37487ad7e4618aa9e161ca7fe7
SHA256eee9c0fcd367afda06280332d384d8505eac33f5ff4e623bb3b615b2e2814492
SHA512b445068a2fed11b614919719b21037d5155ef22e732b58b280347f69ee0302645200522619a50d8e0c4312c93ee7aec76efa638aad2d24d2c2bd6ccc5f6166cd
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C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\B2FAF7692FD9FFBD64EDE317E42334BA_D7393C8F62BDE4D4CB606228BC7A711E
MD583a69b7893e6f24064bc929a34107faf
SHA15824f62d9e070e5596de7cb060a27cac25faf584
SHA256cf24bbe8853cbbf66fdbf1bdd9a5521313d32f6f1529af99f92c2f9e5de5608e
SHA51293bedabf32405768f6035c11e98a0bac6d2c65736b52c170a2bfc648f417257b04e4778490e7056f8b7af2c50d67e8c07d4c21063ae67c521498bd63fe657041
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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
839609b011f03a293a0573ea5fb1277e
SHA1fe48ac0a84e79bc2dd0024e55a62e86b077f8c12
SHA256d466ef9698569363af4f08b64235817c7838c726c1faee300582aab3d90f5683
SHA512526f6345e367950bc775213663fd68bd7bae2b82c71df70e8589dccc173da66af0171183c4abc4a102e45e151453ff8a8d67c2e4c8fcf72c54d85def22d37ac4
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MD5
8f73c08a9660691143661bf7332c3c27
SHA137fa65dd737c50fda710fdbde89e51374d0c204a
SHA2563fe6b1c54b8cf28f571e0c5d6636b4069a8ab00b4f11dd842cfec00691d0c9cd
SHA5120042ecf9b3571bb5eba2de893e8b2371df18f7c5a589f52ee66e4bfbaa15a5b8b7cc6a155792aaa8988528c27196896d5e82e1751c998bacea0d92395f66ad89
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MD5
bfac4e3c5908856ba17d41edcd455a51
SHA18eec7e888767aa9e4cca8ff246eb2aacb9170428
SHA256e2935b5b28550d47dc971f456d6961f20d1633b4892998750140e0eaa9ae9d78
SHA5122565bab776c4d732ffb1f9b415992a4c65b81bcd644a9a1df1333a269e322925fc1df4f76913463296efd7c88ef194c3056de2f1ca1357d7b5fe5ff0da877a66