Analysis Overview
SHA256
ef930a408ed514817f9c75ff5798748f1935d8b20ca49a68b59aa8d5c69de85b
Threat Level: Known bad
The file ef930a408ed514817f9c75ff5798748f1935d8b20ca49a68b59aa8d5c69de85b was found to be: Known bad.
Malicious Activity Summary
Detected Djvu ransomware
Djvu Ransomware
Vidar
Vidar Stealer
Executes dropped EXE
Downloads MZ/PE file
Checks computer location settings
Modifies file permissions
Reads user/profile data of web browsers
Loads dropped DLL
Adds Run key to start application
Looks up external IP address via web service
Accesses cryptocurrency files/wallets, possible credential harvesting
Accesses 2FA software files, possible credential harvesting
Checks installed software on the system
Suspicious use of SetThreadContext
Enumerates physical storage devices
Suspicious use of WriteProcessMemory
Modifies system certificate store
Checks processor information in registry
Suspicious behavior: EnumeratesProcesses
MITRE ATT&CK
Enterprise Matrix V6
Analysis: static1
Detonation Overview
Reported
2022-04-23 20:31
Signatures
Analysis: behavioral1
Detonation Overview
Submitted
2022-04-23 20:31
Reported
2022-04-23 20:34
Platform
win10v2004-20220414-en
Max time kernel
99s
Max time network
124s
Command Line
Signatures
Detected Djvu ransomware
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
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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 |
| N/A | N/A | N/A | N/A |
| 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\5426883d-ff14-40e4-902f-e3c1a9e2fde8\build2.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\5426883d-ff14-40e4-902f-e3c1a9e2fde8\build2.exe | N/A |
Checks computer location settings
| Description | Indicator | Process | Target |
| Key value queried | \REGISTRY\USER\S-1-5-21-3751123196-3323558407-1869646069-1000\Control Panel\International\Geo\Nation | C:\Users\Admin\AppData\Local\Temp\ef930a408ed514817f9c75ff5798748f1935d8b20ca49a68b59aa8d5c69de85b.exe | N/A |
| Key value queried | \REGISTRY\USER\S-1-5-21-3751123196-3323558407-1869646069-1000\Control Panel\International\Geo\Nation | C:\Users\Admin\AppData\Local\Temp\ef930a408ed514817f9c75ff5798748f1935d8b20ca49a68b59aa8d5c69de85b.exe | N/A |
Loads dropped DLL
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\5426883d-ff14-40e4-902f-e3c1a9e2fde8\build2.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\5426883d-ff14-40e4-902f-e3c1a9e2fde8\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-1-5-21-3751123196-3323558407-1869646069-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\aaaead5a-1753-4f64-85ae-8cd48e4f6c0f\\ef930a408ed514817f9c75ff5798748f1935d8b20ca49a68b59aa8d5c69de85b.exe\" --AutoStart" | C:\Users\Admin\AppData\Local\Temp\ef930a408ed514817f9c75ff5798748f1935d8b20ca49a68b59aa8d5c69de85b.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 2912 set thread context of 4388 | N/A | C:\Users\Admin\AppData\Local\Temp\ef930a408ed514817f9c75ff5798748f1935d8b20ca49a68b59aa8d5c69de85b.exe | C:\Users\Admin\AppData\Local\Temp\ef930a408ed514817f9c75ff5798748f1935d8b20ca49a68b59aa8d5c69de85b.exe |
| PID 4804 set thread context of 4492 | N/A | C:\Users\Admin\AppData\Local\Temp\ef930a408ed514817f9c75ff5798748f1935d8b20ca49a68b59aa8d5c69de85b.exe | C:\Users\Admin\AppData\Local\Temp\ef930a408ed514817f9c75ff5798748f1935d8b20ca49a68b59aa8d5c69de85b.exe |
| PID 4264 set thread context of 4204 | N/A | C:\Users\Admin\AppData\Local\5426883d-ff14-40e4-902f-e3c1a9e2fde8\build2.exe | C:\Users\Admin\AppData\Local\5426883d-ff14-40e4-902f-e3c1a9e2fde8\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\5426883d-ff14-40e4-902f-e3c1a9e2fde8\build2.exe | N/A |
| Key value queried | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString | C:\Users\Admin\AppData\Local\5426883d-ff14-40e4-902f-e3c1a9e2fde8\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\ef930a408ed514817f9c75ff5798748f1935d8b20ca49a68b59aa8d5c69de85b.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\ef930a408ed514817f9c75ff5798748f1935d8b20ca49a68b59aa8d5c69de85b.exe | N/A |
Suspicious behavior: EnumeratesProcesses
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\ef930a408ed514817f9c75ff5798748f1935d8b20ca49a68b59aa8d5c69de85b.exe
"C:\Users\Admin\AppData\Local\Temp\ef930a408ed514817f9c75ff5798748f1935d8b20ca49a68b59aa8d5c69de85b.exe"
C:\Users\Admin\AppData\Local\Temp\ef930a408ed514817f9c75ff5798748f1935d8b20ca49a68b59aa8d5c69de85b.exe
"C:\Users\Admin\AppData\Local\Temp\ef930a408ed514817f9c75ff5798748f1935d8b20ca49a68b59aa8d5c69de85b.exe"
C:\Windows\SysWOW64\icacls.exe
icacls "C:\Users\Admin\AppData\Local\aaaead5a-1753-4f64-85ae-8cd48e4f6c0f" /deny *S-1-1-0:(OI)(CI)(DE,DC)
C:\Users\Admin\AppData\Local\Temp\ef930a408ed514817f9c75ff5798748f1935d8b20ca49a68b59aa8d5c69de85b.exe
"C:\Users\Admin\AppData\Local\Temp\ef930a408ed514817f9c75ff5798748f1935d8b20ca49a68b59aa8d5c69de85b.exe" --Admin IsNotAutoStart IsNotTask
C:\Users\Admin\AppData\Local\Temp\ef930a408ed514817f9c75ff5798748f1935d8b20ca49a68b59aa8d5c69de85b.exe
"C:\Users\Admin\AppData\Local\Temp\ef930a408ed514817f9c75ff5798748f1935d8b20ca49a68b59aa8d5c69de85b.exe" --Admin IsNotAutoStart IsNotTask
C:\Users\Admin\AppData\Local\5426883d-ff14-40e4-902f-e3c1a9e2fde8\build2.exe
"C:\Users\Admin\AppData\Local\5426883d-ff14-40e4-902f-e3c1a9e2fde8\build2.exe"
C:\Users\Admin\AppData\Local\5426883d-ff14-40e4-902f-e3c1a9e2fde8\build2.exe
"C:\Users\Admin\AppData\Local\5426883d-ff14-40e4-902f-e3c1a9e2fde8\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 |
| RO | 109.98.58.98:80 | fuyt.org | tcp |
| KR | 211.40.39.251:80 | zerit.top | tcp |
| RO | 109.98.58.98:80 | 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 |
| US | 13.89.178.27:443 | tcp | |
| US | 8.8.8.8:53 | 96.108.152.52.in-addr.arpa | udp |
| US | 209.197.3.8:80 | tcp | |
| NL | 88.221.144.179:80 | tcp | |
| DE | 116.202.1.195:80 | 116.202.1.195 | tcp |
Files
memory/4388-130-0x0000000000000000-mapping.dmp
memory/4388-131-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4388-132-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4388-134-0x0000000000400000-0x0000000000537000-memory.dmp
memory/2912-135-0x00000000022B0000-0x00000000023CB000-memory.dmp
memory/2912-133-0x00000000009AB000-0x0000000000A3C000-memory.dmp
memory/4388-136-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4860-137-0x0000000000000000-mapping.dmp
C:\Users\Admin\AppData\Local\aaaead5a-1753-4f64-85ae-8cd48e4f6c0f\ef930a408ed514817f9c75ff5798748f1935d8b20ca49a68b59aa8d5c69de85b.exe
| MD5 | 744389cd974c11185fcc4099ad42c5bc |
| SHA1 | 9629d8652492825087bded93fd39684378dc0fc0 |
| SHA256 | ef930a408ed514817f9c75ff5798748f1935d8b20ca49a68b59aa8d5c69de85b |
| SHA512 | c5bfa5be3e931ea16273c15c6bb604f1207bb74c41fb7a635fd8d691c30d8be84fcfac37ce39cf3de2ea478c29209071163916efb3ded5645c0d842d2b4df183 |
memory/4804-139-0x0000000000000000-mapping.dmp
memory/4492-140-0x0000000000000000-mapping.dmp
memory/4804-143-0x0000000000B2B000-0x0000000000BBC000-memory.dmp
memory/4492-142-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4492-144-0x0000000000400000-0x0000000000537000-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 | 48078e99f68c9b3afbaa737f39e637b4 |
| SHA1 | fe30a661e1dfc1d238b451cb531d30670ebefef3 |
| SHA256 | 6f19503f7b364470c0a99a72a308672737fc957717e133d5356a1728530d42ec |
| SHA512 | d3fa39d332c0340fc46b50a620f63c88c878b8018603ecbce8d6289e2057aef7f0078f6855033804927d336aaddccb6b738dcdab4699bff14d137aa7066faae0 |
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 | d716d109cc787b761a5d75c0faf55a35 |
| SHA1 | faf637954e3ac51e4018114a07e0648a261c890a |
| SHA256 | 422d837e7193a0040360650a847e5c013df0ed351c816d893274b01f2176ecee |
| SHA512 | 35c50f549583b0d8038bbc5792c76e42e6d21488c5a40c24ef915d1b93c47a27ba04e06a971b4f27a647600761155c0a07e103856a2cb1b2ab32e7ea330cffde |
memory/4492-149-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4264-150-0x0000000000000000-mapping.dmp
C:\Users\Admin\AppData\Local\5426883d-ff14-40e4-902f-e3c1a9e2fde8\build2.exe
| MD5 | ad1b502b6714c0a374b055332018974b |
| SHA1 | 672f4e44475177ddcb1bfa73db3c5dee0f031bc2 |
| SHA256 | f2cfbc265125aca3cbf385120f7489e8044f444976ba43ee3a19e706257c9e95 |
| SHA512 | 0197d74e6eb9fa11d48e6939dbd091c6896908870a59fef1d40830e43caf2539fd03ac933d47eae4c3b0ec74e2bfb0ece7f44c4a525b075fe4235ca6086c355e |
C:\Users\Admin\AppData\Local\5426883d-ff14-40e4-902f-e3c1a9e2fde8\build2.exe
| MD5 | ad1b502b6714c0a374b055332018974b |
| SHA1 | 672f4e44475177ddcb1bfa73db3c5dee0f031bc2 |
| SHA256 | f2cfbc265125aca3cbf385120f7489e8044f444976ba43ee3a19e706257c9e95 |
| SHA512 | 0197d74e6eb9fa11d48e6939dbd091c6896908870a59fef1d40830e43caf2539fd03ac933d47eae4c3b0ec74e2bfb0ece7f44c4a525b075fe4235ca6086c355e |
memory/4264-153-0x0000000000588000-0x00000000005B3000-memory.dmp
memory/4204-154-0x0000000000000000-mapping.dmp
memory/4204-155-0x0000000000400000-0x000000000044C000-memory.dmp
C:\Users\Admin\AppData\Local\5426883d-ff14-40e4-902f-e3c1a9e2fde8\build2.exe
| MD5 | ad1b502b6714c0a374b055332018974b |
| SHA1 | 672f4e44475177ddcb1bfa73db3c5dee0f031bc2 |
| SHA256 | f2cfbc265125aca3cbf385120f7489e8044f444976ba43ee3a19e706257c9e95 |
| SHA512 | 0197d74e6eb9fa11d48e6939dbd091c6896908870a59fef1d40830e43caf2539fd03ac933d47eae4c3b0ec74e2bfb0ece7f44c4a525b075fe4235ca6086c355e |
memory/4204-158-0x0000000000400000-0x000000000044C000-memory.dmp
memory/4204-160-0x0000000000400000-0x000000000044C000-memory.dmp
memory/4264-159-0x0000000002090000-0x00000000020D9000-memory.dmp
memory/4264-157-0x0000000000588000-0x00000000005B3000-memory.dmp
memory/4204-161-0x0000000000400000-0x000000000044C000-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 |