Analysis Overview
SHA256
b92a587e4d9c109b7ed4915a2568be502a989d5ce36668a184244be7437846d9
Threat Level: Known bad
The file b92a587e4d9c109b7ed4915a2568be502a989d5ce36668a184244be7437846d9 was found to be: Known bad.
Malicious Activity Summary
Djvu Ransomware
Detected Djvu ransomware
suricata: ET MALWARE Potential Dridex.Maldoc Minimal Executable Request
Vidar
Vidar Stealer
Downloads MZ/PE file
Executes dropped EXE
Checks computer location settings
Loads dropped DLL
Modifies file permissions
Reads user/profile data of web browsers
Accesses 2FA software files, possible credential harvesting
Accesses cryptocurrency files/wallets, possible credential harvesting
Adds Run key to start application
Checks installed software on the system
Looks up external IP address via web service
Suspicious use of SetThreadContext
Enumerates physical storage devices
Modifies system certificate store
Suspicious behavior: EnumeratesProcesses
Suspicious use of WriteProcessMemory
Checks processor information in registry
MITRE ATT&CK
Enterprise Matrix V6
Analysis: static1
Detonation Overview
Reported
2022-04-24 17:27
Signatures
Analysis: behavioral1
Detonation Overview
Submitted
2022-04-24 17:27
Reported
2022-04-24 17:29
Platform
win10v2004-20220414-en
Max time kernel
100s
Max time network
144s
Command Line
Signatures
Detected Djvu ransomware
| Description | Indicator | Process | Target |
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Djvu Ransomware
Vidar
suricata: ET MALWARE Potential Dridex.Maldoc Minimal Executable Request
Vidar Stealer
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
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Downloads MZ/PE file
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\f99b5b11-8a07-4d3a-b910-980d4931a3e7\build2.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\f99b5b11-8a07-4d3a-b910-980d4931a3e7\build2.exe | N/A |
Checks computer location settings
| Description | Indicator | Process | Target |
| Key value queried | \REGISTRY\USER\S-1-5-21-2632097139-1792035885-811742494-1000\Control Panel\International\Geo\Nation | C:\Users\Admin\AppData\Local\Temp\b92a587e4d9c109b7ed4915a2568be502a989d5ce36668a184244be7437846d9.exe | N/A |
| Key value queried | \REGISTRY\USER\S-1-5-21-2632097139-1792035885-811742494-1000\Control Panel\International\Geo\Nation | C:\Users\Admin\AppData\Local\Temp\b92a587e4d9c109b7ed4915a2568be502a989d5ce36668a184244be7437846d9.exe | N/A |
Loads dropped DLL
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\f99b5b11-8a07-4d3a-b910-980d4931a3e7\build2.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\f99b5b11-8a07-4d3a-b910-980d4931a3e7\build2.exe | N/A |
Modifies file permissions
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\icacls.exe | N/A |
Reads user/profile data of web browsers
Accesses 2FA software files, possible credential harvesting
Accesses cryptocurrency files/wallets, possible credential harvesting
Adds Run key to start application
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\USER\S-1-5-21-2632097139-1792035885-811742494-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\bf710cb3-9dc9-46da-8a84-bb8e0cacbfe4\\b92a587e4d9c109b7ed4915a2568be502a989d5ce36668a184244be7437846d9.exe\" --AutoStart" | C:\Users\Admin\AppData\Local\Temp\b92a587e4d9c109b7ed4915a2568be502a989d5ce36668a184244be7437846d9.exe | N/A |
Checks installed software on the system
Looks up external IP address via web service
| Description | Indicator | Process | Target |
| N/A | api.2ip.ua | N/A | N/A |
| N/A | api.2ip.ua | N/A | N/A |
| N/A | api.2ip.ua | N/A | N/A |
Suspicious use of SetThreadContext
| Description | Indicator | Process | Target |
| PID 3888 set thread context of 300 | N/A | C:\Users\Admin\AppData\Local\Temp\b92a587e4d9c109b7ed4915a2568be502a989d5ce36668a184244be7437846d9.exe | C:\Users\Admin\AppData\Local\Temp\b92a587e4d9c109b7ed4915a2568be502a989d5ce36668a184244be7437846d9.exe |
| PID 4572 set thread context of 1632 | N/A | C:\Users\Admin\AppData\Local\Temp\b92a587e4d9c109b7ed4915a2568be502a989d5ce36668a184244be7437846d9.exe | C:\Users\Admin\AppData\Local\Temp\b92a587e4d9c109b7ed4915a2568be502a989d5ce36668a184244be7437846d9.exe |
| PID 1508 set thread context of 1236 | N/A | C:\Users\Admin\AppData\Local\f99b5b11-8a07-4d3a-b910-980d4931a3e7\build2.exe | C:\Users\Admin\AppData\Local\f99b5b11-8a07-4d3a-b910-980d4931a3e7\build2.exe |
Enumerates physical storage devices
Checks processor information in registry
| Description | Indicator | Process | Target |
| Key opened | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0 | C:\Users\Admin\AppData\Local\f99b5b11-8a07-4d3a-b910-980d4931a3e7\build2.exe | N/A |
| Key value queried | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString | C:\Users\Admin\AppData\Local\f99b5b11-8a07-4d3a-b910-980d4931a3e7\build2.exe | N/A |
Modifies system certificate store
| Description | Indicator | Process | Target |
| Key created | \REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\D1EB23A46D17D68FD92564C2F1F1601764D8E349 | C:\Users\Admin\AppData\Local\Temp\b92a587e4d9c109b7ed4915a2568be502a989d5ce36668a184244be7437846d9.exe | N/A |
| Set value (data) | \REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\D1EB23A46D17D68FD92564C2F1F1601764D8E349\Blob = 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 | C:\Users\Admin\AppData\Local\Temp\b92a587e4d9c109b7ed4915a2568be502a989d5ce36668a184244be7437846d9.exe | N/A |
Suspicious behavior: EnumeratesProcesses
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\b92a587e4d9c109b7ed4915a2568be502a989d5ce36668a184244be7437846d9.exe
"C:\Users\Admin\AppData\Local\Temp\b92a587e4d9c109b7ed4915a2568be502a989d5ce36668a184244be7437846d9.exe"
C:\Users\Admin\AppData\Local\Temp\b92a587e4d9c109b7ed4915a2568be502a989d5ce36668a184244be7437846d9.exe
"C:\Users\Admin\AppData\Local\Temp\b92a587e4d9c109b7ed4915a2568be502a989d5ce36668a184244be7437846d9.exe"
C:\Windows\SysWOW64\icacls.exe
icacls "C:\Users\Admin\AppData\Local\bf710cb3-9dc9-46da-8a84-bb8e0cacbfe4" /deny *S-1-1-0:(OI)(CI)(DE,DC)
C:\Users\Admin\AppData\Local\Temp\b92a587e4d9c109b7ed4915a2568be502a989d5ce36668a184244be7437846d9.exe
"C:\Users\Admin\AppData\Local\Temp\b92a587e4d9c109b7ed4915a2568be502a989d5ce36668a184244be7437846d9.exe" --Admin IsNotAutoStart IsNotTask
C:\Users\Admin\AppData\Local\Temp\b92a587e4d9c109b7ed4915a2568be502a989d5ce36668a184244be7437846d9.exe
"C:\Users\Admin\AppData\Local\Temp\b92a587e4d9c109b7ed4915a2568be502a989d5ce36668a184244be7437846d9.exe" --Admin IsNotAutoStart IsNotTask
C:\Users\Admin\AppData\Local\f99b5b11-8a07-4d3a-b910-980d4931a3e7\build2.exe
"C:\Users\Admin\AppData\Local\f99b5b11-8a07-4d3a-b910-980d4931a3e7\build2.exe"
C:\Users\Admin\AppData\Local\f99b5b11-8a07-4d3a-b910-980d4931a3e7\build2.exe
"C:\Users\Admin\AppData\Local\f99b5b11-8a07-4d3a-b910-980d4931a3e7\build2.exe"
Network
| Country | Destination | Domain | Proto |
| US | 93.184.220.29:80 | tcp | |
| US | 93.184.220.29:80 | tcp | |
| US | 8.8.8.8:53 | api.2ip.ua | udp |
| DE | 162.0.217.254:443 | api.2ip.ua | tcp |
| DE | 162.0.217.254:443 | api.2ip.ua | tcp |
| US | 8.8.8.8:53 | zerit.top | udp |
| US | 8.8.8.8:53 | fuyt.org | udp |
| KR | 116.121.62.237:80 | fuyt.org | tcp |
| MX | 187.212.195.33:80 | zerit.top | tcp |
| KR | 116.121.62.237:80 | fuyt.org | tcp |
| US | 8.8.8.8:53 | t.me | udp |
| NL | 149.154.167.99:443 | t.me | tcp |
| DE | 116.202.1.195:80 | 116.202.1.195 | tcp |
| NL | 52.178.17.2:443 | tcp | |
| NL | 104.110.191.140:80 | tcp | |
| NL | 104.110.191.140:80 | tcp | |
| NL | 104.110.191.140:80 | tcp |
Files
memory/300-130-0x0000000000000000-mapping.dmp
memory/300-131-0x0000000000400000-0x0000000000537000-memory.dmp
memory/300-132-0x0000000000400000-0x0000000000537000-memory.dmp
memory/3888-133-0x0000000002152000-0x00000000021E4000-memory.dmp
memory/300-134-0x0000000000400000-0x0000000000537000-memory.dmp
memory/3888-135-0x00000000021F0000-0x000000000230B000-memory.dmp
memory/300-136-0x0000000000400000-0x0000000000537000-memory.dmp
memory/2348-137-0x0000000000000000-mapping.dmp
C:\Users\Admin\AppData\Local\bf710cb3-9dc9-46da-8a84-bb8e0cacbfe4\b92a587e4d9c109b7ed4915a2568be502a989d5ce36668a184244be7437846d9.exe
| MD5 | 4cdf609d21d2c966d9890920a9918999 |
| SHA1 | 332e54ed884feb3d64d46feeccfb144bb9fc4127 |
| SHA256 | b92a587e4d9c109b7ed4915a2568be502a989d5ce36668a184244be7437846d9 |
| SHA512 | 860d5ed3fd6d6bf362fe900029f2b812a145c97702355e316583742c565ba848100857539fa136d810e452d433663156e4fe72837269e80d6103ad0fa8825811 |
memory/4572-139-0x0000000000000000-mapping.dmp
memory/1632-140-0x0000000000000000-mapping.dmp
memory/1632-143-0x0000000000400000-0x0000000000537000-memory.dmp
memory/1632-144-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4572-142-0x0000000002171000-0x0000000002203000-memory.dmp
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\07CEF2F654E3ED6050FFC9B6EB844250_3431D4C539FB2CFCB781821E9902850D
| MD5 | d9c694c2d95c6812aa0be903de46da96 |
| SHA1 | df1a733a9c6c27997c798ae4c5715cabe1ffa5e4 |
| SHA256 | f6f85bc0d1770803a206fbfb83c4cb888b3a24b494feac38baa3ea764cda37c0 |
| SHA512 | 97a2eddf197aa74d1d05241008ead092f836b561bc1ad1d731d91db23d6dcce7a65d3dc1609384a3ad3fd5c858bae6c3a4361588b5a965ebf233f14410864793 |
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\07CEF2F654E3ED6050FFC9B6EB844250_3431D4C539FB2CFCB781821E9902850D
| MD5 | 155af151119a7e7f3588597acc5ac13c |
| SHA1 | 1204230ab9b64824bdcb31a0e7565498107d3860 |
| SHA256 | 56e3707c5e4dc986b84ba83d1c8e3046813b750885a4da8aa2df94eed0483775 |
| SHA512 | b1ac9eeaf2fb13b8cf8383188ecc43d98d301f06f03d00d47df98a70569504c5acf3d56d1e218428b075041e9741b4945ceb1a71a0cf521534892af234fa33f3 |
memory/1632-147-0x0000000000400000-0x0000000000537000-memory.dmp
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\B2FAF7692FD9FFBD64EDE317E42334BA_D7393C8F62BDE4D4CB606228BC7A711E
| MD5 | ad8e032271f02af2a955ce10661cc3a8 |
| SHA1 | 967d1bd99bea34c3110cc75c0c0d8b8565eae9f9 |
| SHA256 | d5081bf75d530e9336a6da0f9142bc10f4d06368c365cf0e33f7c99b0f643ce8 |
| SHA512 | bc69dfb03284cf1b8d172ff55938f238b928a0c7846306d8232ab697f54c771a9acf8b0e04a85e149da87ea8cfd9395605d0d95afc30eae1793e91399aa7eef7 |
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\B2FAF7692FD9FFBD64EDE317E42334BA_D7393C8F62BDE4D4CB606228BC7A711E
| MD5 | 5ba6526c3786bf0b58596c38ac21b8b7 |
| SHA1 | b23893baaba95bde2c15efc611060611e650b154 |
| SHA256 | d8dadf5afe3f2989a26eb2c6a65f4b1f50a779ee999e563423bcf86f1e0af12c |
| SHA512 | b2c5dee374c8a1396f90b9288be626cf11d315ad33fd8f9d02080a6d2d2837eb9b596e0da07c8549c2a5c207404c23135c2305d26d1e6cc43ba8f15c2f4dca74 |
C:\Users\Admin\AppData\Local\f99b5b11-8a07-4d3a-b910-980d4931a3e7\build2.exe
| MD5 | ad1b502b6714c0a374b055332018974b |
| SHA1 | 672f4e44475177ddcb1bfa73db3c5dee0f031bc2 |
| SHA256 | f2cfbc265125aca3cbf385120f7489e8044f444976ba43ee3a19e706257c9e95 |
| SHA512 | 0197d74e6eb9fa11d48e6939dbd091c6896908870a59fef1d40830e43caf2539fd03ac933d47eae4c3b0ec74e2bfb0ece7f44c4a525b075fe4235ca6086c355e |
memory/1508-150-0x0000000000000000-mapping.dmp
C:\Users\Admin\AppData\Local\f99b5b11-8a07-4d3a-b910-980d4931a3e7\build2.exe
| MD5 | ad1b502b6714c0a374b055332018974b |
| SHA1 | 672f4e44475177ddcb1bfa73db3c5dee0f031bc2 |
| SHA256 | f2cfbc265125aca3cbf385120f7489e8044f444976ba43ee3a19e706257c9e95 |
| SHA512 | 0197d74e6eb9fa11d48e6939dbd091c6896908870a59fef1d40830e43caf2539fd03ac933d47eae4c3b0ec74e2bfb0ece7f44c4a525b075fe4235ca6086c355e |
memory/1508-153-0x0000000000839000-0x0000000000864000-memory.dmp
memory/1236-154-0x0000000000000000-mapping.dmp
memory/1236-155-0x0000000000400000-0x000000000044C000-memory.dmp
C:\Users\Admin\AppData\Local\f99b5b11-8a07-4d3a-b910-980d4931a3e7\build2.exe
| MD5 | ad1b502b6714c0a374b055332018974b |
| SHA1 | 672f4e44475177ddcb1bfa73db3c5dee0f031bc2 |
| SHA256 | f2cfbc265125aca3cbf385120f7489e8044f444976ba43ee3a19e706257c9e95 |
| SHA512 | 0197d74e6eb9fa11d48e6939dbd091c6896908870a59fef1d40830e43caf2539fd03ac933d47eae4c3b0ec74e2bfb0ece7f44c4a525b075fe4235ca6086c355e |
memory/1236-157-0x0000000000400000-0x000000000044C000-memory.dmp
memory/1508-158-0x0000000000839000-0x0000000000864000-memory.dmp
memory/1236-160-0x0000000000400000-0x000000000044C000-memory.dmp
memory/1508-159-0x00000000005E0000-0x0000000000629000-memory.dmp
memory/1236-161-0x0000000000400000-0x000000000044C000-memory.dmp
C:\ProgramData\nss3.dll
| MD5 | bfac4e3c5908856ba17d41edcd455a51 |
| SHA1 | 8eec7e888767aa9e4cca8ff246eb2aacb9170428 |
| SHA256 | e2935b5b28550d47dc971f456d6961f20d1633b4892998750140e0eaa9ae9d78 |
| SHA512 | 2565bab776c4d732ffb1f9b415992a4c65b81bcd644a9a1df1333a269e322925fc1df4f76913463296efd7c88ef194c3056de2f1ca1357d7b5fe5ff0da877a66 |
C:\ProgramData\mozglue.dll
| MD5 | 8f73c08a9660691143661bf7332c3c27 |
| SHA1 | 37fa65dd737c50fda710fdbde89e51374d0c204a |
| SHA256 | 3fe6b1c54b8cf28f571e0c5d6636b4069a8ab00b4f11dd842cfec00691d0c9cd |
| SHA512 | 0042ecf9b3571bb5eba2de893e8b2371df18f7c5a589f52ee66e4bfbaa15a5b8b7cc6a155792aaa8988528c27196896d5e82e1751c998bacea0d92395f66ad89 |