Analysis Overview
SHA256
884288ae594b1b0e7bbbf748ee01e9f48e213e27d810fc9e8582421c8c59d78c
Threat Level: Known bad
The file 884288ae594b1b0e7bbbf748ee01e9f48e213e27d810fc9e8582421c8c59d78c was found to be: Known bad.
Malicious Activity Summary
Detected Djvu ransomware
Djvu Ransomware
Checks computer location settings
Modifies file permissions
Adds Run key to start application
Looks up external IP address via web service
Suspicious use of SetThreadContext
Unsigned PE
Enumerates physical storage devices
Program crash
Suspicious behavior: EnumeratesProcesses
Suspicious use of WriteProcessMemory
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-05-22 02:35
Signatures
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2024-05-22 02:35
Reported
2024-05-22 02:37
Platform
win7-20240221-en
Max time kernel
143s
Max time network
120s
Command Line
Signatures
Detected Djvu ransomware
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
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Djvu Ransomware
Modifies file permissions
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\icacls.exe | N/A |
Adds Run key to start application
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\USER\S-1-5-21-2297530677-1229052932-2803917579-1000\Software\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\808f39dc-8d54-4b6e-9393-4755bf5e8447\\884288ae594b1b0e7bbbf748ee01e9f48e213e27d810fc9e8582421c8c59d78c.exe\" --AutoStart" | C:\Users\Admin\AppData\Local\Temp\884288ae594b1b0e7bbbf748ee01e9f48e213e27d810fc9e8582421c8c59d78c.exe | N/A |
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 1728 set thread context of 2216 | N/A | C:\Users\Admin\AppData\Local\Temp\884288ae594b1b0e7bbbf748ee01e9f48e213e27d810fc9e8582421c8c59d78c.exe | C:\Users\Admin\AppData\Local\Temp\884288ae594b1b0e7bbbf748ee01e9f48e213e27d810fc9e8582421c8c59d78c.exe |
| PID 2500 set thread context of 2516 | N/A | C:\Users\Admin\AppData\Local\Temp\884288ae594b1b0e7bbbf748ee01e9f48e213e27d810fc9e8582421c8c59d78c.exe | C:\Users\Admin\AppData\Local\Temp\884288ae594b1b0e7bbbf748ee01e9f48e213e27d810fc9e8582421c8c59d78c.exe |
Enumerates physical storage devices
Suspicious behavior: EnumeratesProcesses
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\884288ae594b1b0e7bbbf748ee01e9f48e213e27d810fc9e8582421c8c59d78c.exe
"C:\Users\Admin\AppData\Local\Temp\884288ae594b1b0e7bbbf748ee01e9f48e213e27d810fc9e8582421c8c59d78c.exe"
C:\Users\Admin\AppData\Local\Temp\884288ae594b1b0e7bbbf748ee01e9f48e213e27d810fc9e8582421c8c59d78c.exe
"C:\Users\Admin\AppData\Local\Temp\884288ae594b1b0e7bbbf748ee01e9f48e213e27d810fc9e8582421c8c59d78c.exe"
C:\Windows\SysWOW64\icacls.exe
icacls "C:\Users\Admin\AppData\Local\808f39dc-8d54-4b6e-9393-4755bf5e8447" /deny *S-1-1-0:(OI)(CI)(DE,DC)
C:\Users\Admin\AppData\Local\Temp\884288ae594b1b0e7bbbf748ee01e9f48e213e27d810fc9e8582421c8c59d78c.exe
"C:\Users\Admin\AppData\Local\Temp\884288ae594b1b0e7bbbf748ee01e9f48e213e27d810fc9e8582421c8c59d78c.exe" --Admin IsNotAutoStart IsNotTask
C:\Users\Admin\AppData\Local\Temp\884288ae594b1b0e7bbbf748ee01e9f48e213e27d810fc9e8582421c8c59d78c.exe
"C:\Users\Admin\AppData\Local\Temp\884288ae594b1b0e7bbbf748ee01e9f48e213e27d810fc9e8582421c8c59d78c.exe" --Admin IsNotAutoStart IsNotTask
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | api.2ip.ua | udp |
| US | 104.21.65.24:443 | api.2ip.ua | tcp |
| US | 104.21.65.24:443 | api.2ip.ua | tcp |
| US | 8.8.8.8:53 | sdfjhuz.com | udp |
| US | 8.8.8.8:53 | cajgtus.com | udp |
| CO | 190.147.128.172:80 | cajgtus.com | tcp |
| KR | 183.100.39.16:80 | sdfjhuz.com | tcp |
| CO | 190.147.128.172:80 | cajgtus.com | tcp |
| CO | 190.147.128.172:80 | cajgtus.com | tcp |
| CO | 190.147.128.172:80 | cajgtus.com | tcp |
| CO | 190.147.128.172:80 | cajgtus.com | tcp |
Files
memory/1728-0-0x00000000002E0000-0x0000000000371000-memory.dmp
memory/2216-1-0x000000007EFDE000-0x000000007EFDF000-memory.dmp
memory/1728-6-0x00000000006B0000-0x00000000007CB000-memory.dmp
memory/2216-3-0x0000000000400000-0x0000000000537000-memory.dmp
memory/1728-5-0x00000000002E0000-0x0000000000371000-memory.dmp
memory/2216-7-0x0000000000400000-0x0000000000537000-memory.dmp
memory/2216-8-0x0000000000400000-0x0000000000537000-memory.dmp
C:\Users\Admin\AppData\Local\808f39dc-8d54-4b6e-9393-4755bf5e8447\884288ae594b1b0e7bbbf748ee01e9f48e213e27d810fc9e8582421c8c59d78c.exe
| MD5 | 4b82d5ef17c6f3905db22541c87894b3 |
| SHA1 | 4574488beb1c852d724535b8868ea0211fe9a7e8 |
| SHA256 | 884288ae594b1b0e7bbbf748ee01e9f48e213e27d810fc9e8582421c8c59d78c |
| SHA512 | 4e0ad8fce5e492bfbb9641b27a91925e1446146045425863f4c6ff6b6281f902dcdcd3471d11ffed026a8f661c2c7c7ebd75b92a3d691c930b42437ff6d06ebb |
memory/2216-28-0x0000000000400000-0x0000000000537000-memory.dmp
memory/2500-29-0x0000000000500000-0x0000000000591000-memory.dmp
memory/2500-30-0x0000000000400000-0x00000000004FF000-memory.dmp
memory/2516-37-0x0000000000400000-0x0000000000537000-memory.dmp
memory/2516-36-0x0000000000400000-0x0000000000537000-memory.dmp
memory/2500-35-0x0000000000400000-0x00000000004FF000-memory.dmp
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\24BD96D5497F70B3F510A6B53CD43F3E_3A89246FB90C5EE6620004F1AE0EB0EA
| MD5 | 11e2d75e1b43da817a7bcd923557ba3e |
| SHA1 | e8b49548856c2502162cdfbb2d1ca4a95b39195e |
| SHA256 | a41239bada9417032cfd258a4e08a1d757619431b08d19ee47305dc605581a44 |
| SHA512 | 3efcb07681cae7ea723c46f492585da1f6bf28a6cb7350ddedb8e93b98002c11923ba06a58001afa2d5fc790698579473feed9e4d75b5c8f3959af2c4b8c22cc |
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\CAF4703619713E3F18D8A9D5D88D6288_F2DAF19C1F776537105D08FC8D978464
| MD5 | 8202a1cd02e7d69597995cabbe881a12 |
| SHA1 | 8858d9d934b7aa9330ee73de6c476acf19929ff6 |
| SHA256 | 58f381c3a0a0ace6321da22e40bd44a597bd98b9c9390ab9258426b5cf75a7a5 |
| SHA512 | 97ba9fceab995d4bef706f8deef99e06862999734ebe6a05832c710104479c6337cbf0a76e1c1e0f91566a61334dc100d837dfd049e20da765fe49def684f9c9 |
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\CAF4703619713E3F18D8A9D5D88D6288_F2DAF19C1F776537105D08FC8D978464
| MD5 | 15cb03b6984b65202ef67aebaf94a3d9 |
| SHA1 | 4a1cfa05f1b82564802ca5afd9b8f13950ef78c5 |
| SHA256 | b15e725c1e4302bc16b290e728031dcefcb580be539ae351331004746c89e757 |
| SHA512 | 232c6972ef010742d30cab0c5f44256444261aede2979b2f3cc576756bb82b803f08ef95e5754fd4d12b0df9ed79ea5739375ccb29b3b23b7f608ec6cdb1eb3b |
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\24BD96D5497F70B3F510A6B53CD43F3E_3A89246FB90C5EE6620004F1AE0EB0EA
| MD5 | cb35bd9d6c5a4fd50a9263018bbd9784 |
| SHA1 | efec24f93d2af7bd01969c36870ebc928fa6c790 |
| SHA256 | be648ee93df285417e494e28c01e3ab8f3d043845f4d3b397dfd137d187ed612 |
| SHA512 | ac26182fb167458da4b465b118720470859e8028db8d3d71ddbe0c5be0e46b9178c5f7ccb8b1252c38754e27da1af546f8d2f6e32e1bfcbeac0d510aa831bf11 |
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015
| MD5 | 761f02051d1293eb80763018ccd1c09c |
| SHA1 | e7151839e18e1796f637d44a677af00a4c135775 |
| SHA256 | 0bab6a112acc2eed972bd50d190b79309da14d1fba4f9734d6d00eaca2c7fbed |
| SHA512 | caeb91789211a478dfc31c7f92d0ef30710e577a0a755fffe1d03800a2305aa274b90f6bf77c7a3fb2f863fbdb5283561047b213f87280757d12fe79ac4ffeec |
C:\Users\Admin\AppData\Local\Temp\Cab1DBE.tmp
| MD5 | ac05d27423a85adc1622c714f2cb6184 |
| SHA1 | b0fe2b1abddb97837ea0195be70ab2ff14d43198 |
| SHA256 | c6456e12e5e53287a547af4103e0397cb9697e466cf75844312dc296d43d144d |
| SHA512 | 6d0ef9050e41fbae680e0e59dd0f90b6ac7fea5579ef5708b69d5da33a0ece7e8b16574b58b17b64a34cc34a4ffc22b4a62c1ece61f36c4a11a0665e0536b90d |
memory/2516-50-0x0000000000400000-0x0000000000537000-memory.dmp
memory/2516-51-0x0000000000400000-0x0000000000537000-memory.dmp
memory/2516-52-0x0000000000400000-0x0000000000537000-memory.dmp
memory/2516-57-0x0000000000400000-0x0000000000537000-memory.dmp
memory/2516-58-0x0000000000400000-0x0000000000537000-memory.dmp
memory/2516-55-0x0000000000400000-0x0000000000537000-memory.dmp
memory/2516-59-0x0000000000400000-0x0000000000537000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2024-05-22 02:35
Reported
2024-05-22 02:37
Platform
win10v2004-20240508-en
Max time kernel
140s
Max time network
128s
Command Line
Signatures
Detected Djvu ransomware
| 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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| 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 |
Djvu Ransomware
Checks computer location settings
| Description | Indicator | Process | Target |
| Key value queried | \REGISTRY\USER\S-1-5-21-1181767204-2009306918-3718769404-1000\Control Panel\International\Geo\Nation | C:\Users\Admin\AppData\Local\Temp\884288ae594b1b0e7bbbf748ee01e9f48e213e27d810fc9e8582421c8c59d78c.exe | N/A |
Modifies file permissions
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\icacls.exe | N/A |
Adds Run key to start application
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\USER\S-1-5-21-1181767204-2009306918-3718769404-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\d08ba524-2b03-406e-9f22-1e79a7c6434f\\884288ae594b1b0e7bbbf748ee01e9f48e213e27d810fc9e8582421c8c59d78c.exe\" --AutoStart" | C:\Users\Admin\AppData\Local\Temp\884288ae594b1b0e7bbbf748ee01e9f48e213e27d810fc9e8582421c8c59d78c.exe | N/A |
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 |
Suspicious use of SetThreadContext
| Description | Indicator | Process | Target |
| PID 4040 set thread context of 788 | N/A | C:\Users\Admin\AppData\Local\Temp\884288ae594b1b0e7bbbf748ee01e9f48e213e27d810fc9e8582421c8c59d78c.exe | C:\Users\Admin\AppData\Local\Temp\884288ae594b1b0e7bbbf748ee01e9f48e213e27d810fc9e8582421c8c59d78c.exe |
| PID 3288 set thread context of 4684 | N/A | C:\Users\Admin\AppData\Local\Temp\884288ae594b1b0e7bbbf748ee01e9f48e213e27d810fc9e8582421c8c59d78c.exe | C:\Users\Admin\AppData\Local\Temp\884288ae594b1b0e7bbbf748ee01e9f48e213e27d810fc9e8582421c8c59d78c.exe |
Enumerates physical storage devices
Program crash
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\WerFault.exe | C:\Users\Admin\AppData\Local\Temp\884288ae594b1b0e7bbbf748ee01e9f48e213e27d810fc9e8582421c8c59d78c.exe |
Suspicious behavior: EnumeratesProcesses
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\884288ae594b1b0e7bbbf748ee01e9f48e213e27d810fc9e8582421c8c59d78c.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\884288ae594b1b0e7bbbf748ee01e9f48e213e27d810fc9e8582421c8c59d78c.exe | N/A |
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\884288ae594b1b0e7bbbf748ee01e9f48e213e27d810fc9e8582421c8c59d78c.exe
"C:\Users\Admin\AppData\Local\Temp\884288ae594b1b0e7bbbf748ee01e9f48e213e27d810fc9e8582421c8c59d78c.exe"
C:\Users\Admin\AppData\Local\Temp\884288ae594b1b0e7bbbf748ee01e9f48e213e27d810fc9e8582421c8c59d78c.exe
"C:\Users\Admin\AppData\Local\Temp\884288ae594b1b0e7bbbf748ee01e9f48e213e27d810fc9e8582421c8c59d78c.exe"
C:\Windows\SysWOW64\icacls.exe
icacls "C:\Users\Admin\AppData\Local\d08ba524-2b03-406e-9f22-1e79a7c6434f" /deny *S-1-1-0:(OI)(CI)(DE,DC)
C:\Users\Admin\AppData\Local\Temp\884288ae594b1b0e7bbbf748ee01e9f48e213e27d810fc9e8582421c8c59d78c.exe
"C:\Users\Admin\AppData\Local\Temp\884288ae594b1b0e7bbbf748ee01e9f48e213e27d810fc9e8582421c8c59d78c.exe" --Admin IsNotAutoStart IsNotTask
C:\Users\Admin\AppData\Local\Temp\884288ae594b1b0e7bbbf748ee01e9f48e213e27d810fc9e8582421c8c59d78c.exe
"C:\Users\Admin\AppData\Local\Temp\884288ae594b1b0e7bbbf748ee01e9f48e213e27d810fc9e8582421c8c59d78c.exe" --Admin IsNotAutoStart IsNotTask
C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 4684 -ip 4684
C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 4684 -s 572
C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --field-trial-handle=4436,i,7012731823941922179,12386606396608877869,262144 --variations-seed-version --mojo-platform-channel-handle=4024 /prefetch:8
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | 8.8.8.8.in-addr.arpa | udp |
| US | 8.8.8.8:53 | api.2ip.ua | udp |
| US | 172.67.139.220:443 | api.2ip.ua | tcp |
| US | 8.8.8.8:53 | 28.118.140.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 91.90.14.23.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 220.139.67.172.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 67.169.217.172.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 4.159.190.20.in-addr.arpa | udp |
| NL | 23.62.61.97:443 | www.bing.com | tcp |
| US | 8.8.8.8:53 | 97.61.62.23.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 154.239.44.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 50.23.12.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 18.31.95.13.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 43.58.199.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | tse1.mm.bing.net | udp |
| US | 204.79.197.200:443 | tse1.mm.bing.net | tcp |
| US | 204.79.197.200:443 | tse1.mm.bing.net | tcp |
| US | 8.8.8.8:53 | 26.35.223.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 200.197.79.204.in-addr.arpa | udp |
Files
memory/4040-1-0x0000000002190000-0x0000000002226000-memory.dmp
memory/788-2-0x0000000000400000-0x0000000000537000-memory.dmp
memory/788-3-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4040-4-0x0000000002230000-0x000000000234B000-memory.dmp
memory/788-6-0x0000000000400000-0x0000000000537000-memory.dmp
memory/788-5-0x0000000000400000-0x0000000000537000-memory.dmp
C:\Users\Admin\AppData\Local\d08ba524-2b03-406e-9f22-1e79a7c6434f\884288ae594b1b0e7bbbf748ee01e9f48e213e27d810fc9e8582421c8c59d78c.exe
| MD5 | 4b82d5ef17c6f3905db22541c87894b3 |
| SHA1 | 4574488beb1c852d724535b8868ea0211fe9a7e8 |
| SHA256 | 884288ae594b1b0e7bbbf748ee01e9f48e213e27d810fc9e8582421c8c59d78c |
| SHA512 | 4e0ad8fce5e492bfbb9641b27a91925e1446146045425863f4c6ff6b6281f902dcdcd3471d11ffed026a8f661c2c7c7ebd75b92a3d691c930b42437ff6d06ebb |
memory/788-17-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4684-24-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4684-22-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4684-20-0x0000000000400000-0x0000000000537000-memory.dmp
memory/3288-21-0x0000000000400000-0x00000000004FF000-memory.dmp