Analysis Overview
SHA256
840eafcc049686862409a38742294380855dc957ddd4887889f4d4ec46f499e0
Threat Level: Known bad
The file 840eafcc049686862409a38742294380855dc957ddd4887889f4d4ec46f499e0 was found to be: Known bad.
Malicious Activity Summary
Detected Djvu ransomware
Vidar
Djvu Ransomware
Vidar Stealer
Downloads MZ/PE file
Executes dropped EXE
Modifies file permissions
Checks computer location settings
Reads user/profile data of web browsers
Loads dropped DLL
Adds Run key to start application
Accesses cryptocurrency files/wallets, possible credential harvesting
Looks up external IP address via web service
Accesses 2FA software files, possible credential harvesting
Checks installed software on the system
Suspicious use of SetThreadContext
Enumerates physical storage devices
Modifies system certificate store
Suspicious behavior: EnumeratesProcesses
Checks processor information in registry
Suspicious use of WriteProcessMemory
MITRE ATT&CK
Enterprise Matrix V6
Analysis: static1
Detonation Overview
Reported
2022-04-23 22:22
Signatures
Analysis: behavioral1
Detonation Overview
Submitted
2022-04-23 22:22
Reported
2022-04-23 22:25
Platform
win10v2004-20220414-en
Max time kernel
99s
Max time network
136s
Command Line
Signatures
Detected Djvu ransomware
| Description | Indicator | Process | Target |
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Djvu Ransomware
Vidar
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 |
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| N/A | N/A | N/A | N/A |
Downloads MZ/PE file
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\c793363a-7c99-47be-abb0-742c6572581f\build2.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\c793363a-7c99-47be-abb0-742c6572581f\build2.exe | N/A |
Checks computer location settings
| Description | Indicator | Process | Target |
| Key value queried | \REGISTRY\USER\S-1-5-21-1809750270-3141839489-3074374771-1000\Control Panel\International\Geo\Nation | C:\Users\Admin\AppData\Local\Temp\840eafcc049686862409a38742294380855dc957ddd4887889f4d4ec46f499e0.exe | N/A |
| Key value queried | \REGISTRY\USER\S-1-5-21-1809750270-3141839489-3074374771-1000\Control Panel\International\Geo\Nation | C:\Users\Admin\AppData\Local\Temp\840eafcc049686862409a38742294380855dc957ddd4887889f4d4ec46f499e0.exe | N/A |
Loads dropped DLL
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\c793363a-7c99-47be-abb0-742c6572581f\build2.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\c793363a-7c99-47be-abb0-742c6572581f\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-1-5-21-1809750270-3141839489-3074374771-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\79fe4ee0-9693-47a4-bd8d-fa171e662bf6\\840eafcc049686862409a38742294380855dc957ddd4887889f4d4ec46f499e0.exe\" --AutoStart" | C:\Users\Admin\AppData\Local\Temp\840eafcc049686862409a38742294380855dc957ddd4887889f4d4ec46f499e0.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 4328 set thread context of 1324 | N/A | C:\Users\Admin\AppData\Local\Temp\840eafcc049686862409a38742294380855dc957ddd4887889f4d4ec46f499e0.exe | C:\Users\Admin\AppData\Local\Temp\840eafcc049686862409a38742294380855dc957ddd4887889f4d4ec46f499e0.exe |
| PID 220 set thread context of 3996 | N/A | C:\Users\Admin\AppData\Local\Temp\840eafcc049686862409a38742294380855dc957ddd4887889f4d4ec46f499e0.exe | C:\Users\Admin\AppData\Local\Temp\840eafcc049686862409a38742294380855dc957ddd4887889f4d4ec46f499e0.exe |
| PID 3840 set thread context of 4028 | N/A | C:\Users\Admin\AppData\Local\c793363a-7c99-47be-abb0-742c6572581f\build2.exe | C:\Users\Admin\AppData\Local\c793363a-7c99-47be-abb0-742c6572581f\build2.exe |
Enumerates physical storage devices
Checks processor information in registry
| Description | Indicator | Process | Target |
| Key value queried | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString | C:\Users\Admin\AppData\Local\c793363a-7c99-47be-abb0-742c6572581f\build2.exe | N/A |
| Key opened | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0 | C:\Users\Admin\AppData\Local\c793363a-7c99-47be-abb0-742c6572581f\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\840eafcc049686862409a38742294380855dc957ddd4887889f4d4ec46f499e0.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\840eafcc049686862409a38742294380855dc957ddd4887889f4d4ec46f499e0.exe | N/A |
Suspicious behavior: EnumeratesProcesses
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\840eafcc049686862409a38742294380855dc957ddd4887889f4d4ec46f499e0.exe
"C:\Users\Admin\AppData\Local\Temp\840eafcc049686862409a38742294380855dc957ddd4887889f4d4ec46f499e0.exe"
C:\Users\Admin\AppData\Local\Temp\840eafcc049686862409a38742294380855dc957ddd4887889f4d4ec46f499e0.exe
"C:\Users\Admin\AppData\Local\Temp\840eafcc049686862409a38742294380855dc957ddd4887889f4d4ec46f499e0.exe"
C:\Windows\SysWOW64\icacls.exe
icacls "C:\Users\Admin\AppData\Local\79fe4ee0-9693-47a4-bd8d-fa171e662bf6" /deny *S-1-1-0:(OI)(CI)(DE,DC)
C:\Users\Admin\AppData\Local\Temp\840eafcc049686862409a38742294380855dc957ddd4887889f4d4ec46f499e0.exe
"C:\Users\Admin\AppData\Local\Temp\840eafcc049686862409a38742294380855dc957ddd4887889f4d4ec46f499e0.exe" --Admin IsNotAutoStart IsNotTask
C:\Users\Admin\AppData\Local\Temp\840eafcc049686862409a38742294380855dc957ddd4887889f4d4ec46f499e0.exe
"C:\Users\Admin\AppData\Local\Temp\840eafcc049686862409a38742294380855dc957ddd4887889f4d4ec46f499e0.exe" --Admin IsNotAutoStart IsNotTask
C:\Users\Admin\AppData\Local\c793363a-7c99-47be-abb0-742c6572581f\build2.exe
"C:\Users\Admin\AppData\Local\c793363a-7c99-47be-abb0-742c6572581f\build2.exe"
C:\Users\Admin\AppData\Local\c793363a-7c99-47be-abb0-742c6572581f\build2.exe
"C:\Users\Admin\AppData\Local\c793363a-7c99-47be-abb0-742c6572581f\build2.exe"
Network
| Country | Destination | Domain | Proto |
| 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 | 1.248.122.240:80 | fuyt.org | tcp |
| BG | 91.139.196.113:80 | zerit.top | tcp |
| KR | 1.248.122.240:80 | fuyt.org | tcp |
| US | 52.168.117.170:443 | tcp | |
| NL | 104.110.191.140:80 | 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 |
| US | 8.238.111.126:80 | tcp | |
| US | 8.238.111.126:80 | tcp | |
| US | 204.79.197.203:80 | tcp | |
| DE | 116.202.1.195:80 | 116.202.1.195 | tcp |
Files
memory/1324-130-0x0000000000000000-mapping.dmp
memory/1324-131-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4328-133-0x0000000000781000-0x0000000000812000-memory.dmp
memory/4328-134-0x0000000000A50000-0x0000000000B6B000-memory.dmp
memory/1324-132-0x0000000000400000-0x0000000000537000-memory.dmp
memory/1324-135-0x0000000000400000-0x0000000000537000-memory.dmp
memory/1324-136-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4452-137-0x0000000000000000-mapping.dmp
C:\Users\Admin\AppData\Local\79fe4ee0-9693-47a4-bd8d-fa171e662bf6\840eafcc049686862409a38742294380855dc957ddd4887889f4d4ec46f499e0.exe
| MD5 | e9d23558abb161bd905a1fce81941a60 |
| SHA1 | 09716e32ab8cc782f6cae48528a599ad3983f284 |
| SHA256 | 840eafcc049686862409a38742294380855dc957ddd4887889f4d4ec46f499e0 |
| SHA512 | 9d56f9f57504edb844db042f1a42b7b8046122124cb9820da2f50ca8d5aa5fb3716ef55960a0fef805f248412fc1d42fafbaabaa9554729174abd119ddeb1a18 |
memory/220-139-0x0000000000000000-mapping.dmp
memory/3996-140-0x0000000000000000-mapping.dmp
memory/3996-142-0x0000000000400000-0x0000000000537000-memory.dmp
memory/220-143-0x000000000094F000-0x00000000009E0000-memory.dmp
memory/3996-144-0x0000000000400000-0x0000000000537000-memory.dmp
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\07CEF2F654E3ED6050FFC9B6EB844250_3431D4C539FB2CFCB781821E9902850D
| MD5 | ae80420644f9d17a1ceb04dfe52b4551 |
| SHA1 | aca7052dea384b8d31813c11839d16dcef04a4b5 |
| SHA256 | 8893c680c876c7e9a453e301b2763e4310c2fc165bcb8e6cf23ae117f6cff476 |
| SHA512 | 3f742909f7dc09e109f0eec4c245f3be76121dfdab494252eba5edb1907402cf7867cdc7595c529d3445a1676750aebbf9aba4df760ad58645aaf3d897a82a6d |
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\07CEF2F654E3ED6050FFC9B6EB844250_3431D4C539FB2CFCB781821E9902850D
| MD5 | f678657b2d1ac3fdfddefde403553fb0 |
| SHA1 | 7ebe7f58a8559fd900be4776293c551dc686309f |
| SHA256 | 77f6f0979ed174e0c8c2fb1576e9cd8d4306f7b39f3ee8a278219f13b74cbd47 |
| SHA512 | 584b0ba93d6e3ac6f6acdc039cf52b840d590a571372415c14509ba94e396474bc110abebf93cc754088ef963e9b43291743209999e2e21f008303b6047c5f19 |
memory/3996-149-0x0000000000400000-0x0000000000537000-memory.dmp
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\B2FAF7692FD9FFBD64EDE317E42334BA_D7393C8F62BDE4D4CB606228BC7A711E
| MD5 | 4b48eeea719432bc0719653be71e6ecf |
| SHA1 | 41367524cf7d0c34d7737722cb2212558fca9938 |
| SHA256 | 2d25e68537528a81bcadb24f24afda11671512a17d04ed304cf138a30b228866 |
| SHA512 | 152b287e3d0c05f3b4dea98a20e1fc39a61008b3d5c4acc7632647bdffc090ef2ea76d4ec3a6d0cf3387c9f2f43fde1624f213908beb9583b6ad43429f551533 |
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\B2FAF7692FD9FFBD64EDE317E42334BA_D7393C8F62BDE4D4CB606228BC7A711E
| MD5 | b3a6dd7448d81180f72220198f7d7b56 |
| SHA1 | fa030536eba9b5d63612c997195c6c5815dfd07e |
| SHA256 | ba5214514e8222ffc133b8a233ed7bf0ad17ce269a8f8f541d30475ce2d77d43 |
| SHA512 | 2636d437ea6c3ba13f5e05f85e5f0d8e941fd95894582c757f5011284234b92b5703f3dad347e9de7d1db3e731e0ccf00fc126974816b7df053cca690d42cb8b |
memory/3840-150-0x0000000000000000-mapping.dmp
C:\Users\Admin\AppData\Local\c793363a-7c99-47be-abb0-742c6572581f\build2.exe
| MD5 | ad1b502b6714c0a374b055332018974b |
| SHA1 | 672f4e44475177ddcb1bfa73db3c5dee0f031bc2 |
| SHA256 | f2cfbc265125aca3cbf385120f7489e8044f444976ba43ee3a19e706257c9e95 |
| SHA512 | 0197d74e6eb9fa11d48e6939dbd091c6896908870a59fef1d40830e43caf2539fd03ac933d47eae4c3b0ec74e2bfb0ece7f44c4a525b075fe4235ca6086c355e |
C:\Users\Admin\AppData\Local\c793363a-7c99-47be-abb0-742c6572581f\build2.exe
| MD5 | ad1b502b6714c0a374b055332018974b |
| SHA1 | 672f4e44475177ddcb1bfa73db3c5dee0f031bc2 |
| SHA256 | f2cfbc265125aca3cbf385120f7489e8044f444976ba43ee3a19e706257c9e95 |
| SHA512 | 0197d74e6eb9fa11d48e6939dbd091c6896908870a59fef1d40830e43caf2539fd03ac933d47eae4c3b0ec74e2bfb0ece7f44c4a525b075fe4235ca6086c355e |
memory/4028-153-0x0000000000000000-mapping.dmp
C:\Users\Admin\AppData\Local\c793363a-7c99-47be-abb0-742c6572581f\build2.exe
| MD5 | ad1b502b6714c0a374b055332018974b |
| SHA1 | 672f4e44475177ddcb1bfa73db3c5dee0f031bc2 |
| SHA256 | f2cfbc265125aca3cbf385120f7489e8044f444976ba43ee3a19e706257c9e95 |
| SHA512 | 0197d74e6eb9fa11d48e6939dbd091c6896908870a59fef1d40830e43caf2539fd03ac933d47eae4c3b0ec74e2bfb0ece7f44c4a525b075fe4235ca6086c355e |
memory/4028-154-0x0000000000400000-0x000000000044C000-memory.dmp
memory/3840-156-0x00000000005D8000-0x0000000000602000-memory.dmp
memory/3840-158-0x0000000000510000-0x0000000000559000-memory.dmp
memory/4028-157-0x0000000000400000-0x000000000044C000-memory.dmp
memory/4028-159-0x0000000000400000-0x000000000044C000-memory.dmp
memory/4028-160-0x0000000000400000-0x000000000044C000-memory.dmp
memory/4028-161-0x0000000060900000-0x0000000060992000-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 |