Analysis Overview
SHA256
294ad75f41aedb3c48eaf9d6358fa780920d5270a9d45151ceda767b7ee9600b
Threat Level: Known bad
The file 294ad75f41aedb3c48eaf9d6358fa780920d5270a9d45151ceda767b7ee9600b was found to be: Known bad.
Malicious Activity Summary
Djvu Ransomware
Detected 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
Enumerates physical storage devices
Unsigned PE
Program crash
Suspicious behavior: EnumeratesProcesses
Suspicious use of WriteProcessMemory
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-04-17 10:40
Signatures
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2024-04-17 10:40
Reported
2024-04-17 10:43
Platform
win10v2004-20240226-en
Max time kernel
143s
Max time network
151s
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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Djvu Ransomware
Checks computer location settings
| Description | Indicator | Process | Target |
| Key value queried | \REGISTRY\USER\S-1-5-21-3808065738-1666277613-1125846146-1000\Control Panel\International\Geo\Nation | C:\Users\Admin\AppData\Local\Temp\294ad75f41aedb3c48eaf9d6358fa780920d5270a9d45151ceda767b7ee9600b.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-1-5-21-3808065738-1666277613-1125846146-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\4fecf919-6600-4481-a645-0e96ffb38cad\\294ad75f41aedb3c48eaf9d6358fa780920d5270a9d45151ceda767b7ee9600b.exe\" --AutoStart" | C:\Users\Admin\AppData\Local\Temp\294ad75f41aedb3c48eaf9d6358fa780920d5270a9d45151ceda767b7ee9600b.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 1844 set thread context of 32 | N/A | C:\Users\Admin\AppData\Local\Temp\294ad75f41aedb3c48eaf9d6358fa780920d5270a9d45151ceda767b7ee9600b.exe | C:\Users\Admin\AppData\Local\Temp\294ad75f41aedb3c48eaf9d6358fa780920d5270a9d45151ceda767b7ee9600b.exe |
| PID 2500 set thread context of 4084 | N/A | C:\Users\Admin\AppData\Local\Temp\294ad75f41aedb3c48eaf9d6358fa780920d5270a9d45151ceda767b7ee9600b.exe | C:\Users\Admin\AppData\Local\Temp\294ad75f41aedb3c48eaf9d6358fa780920d5270a9d45151ceda767b7ee9600b.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\294ad75f41aedb3c48eaf9d6358fa780920d5270a9d45151ceda767b7ee9600b.exe |
Suspicious behavior: EnumeratesProcesses
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\294ad75f41aedb3c48eaf9d6358fa780920d5270a9d45151ceda767b7ee9600b.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\294ad75f41aedb3c48eaf9d6358fa780920d5270a9d45151ceda767b7ee9600b.exe | N/A |
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\294ad75f41aedb3c48eaf9d6358fa780920d5270a9d45151ceda767b7ee9600b.exe
"C:\Users\Admin\AppData\Local\Temp\294ad75f41aedb3c48eaf9d6358fa780920d5270a9d45151ceda767b7ee9600b.exe"
C:\Users\Admin\AppData\Local\Temp\294ad75f41aedb3c48eaf9d6358fa780920d5270a9d45151ceda767b7ee9600b.exe
"C:\Users\Admin\AppData\Local\Temp\294ad75f41aedb3c48eaf9d6358fa780920d5270a9d45151ceda767b7ee9600b.exe"
C:\Windows\SysWOW64\icacls.exe
icacls "C:\Users\Admin\AppData\Local\4fecf919-6600-4481-a645-0e96ffb38cad" /deny *S-1-1-0:(OI)(CI)(DE,DC)
C:\Users\Admin\AppData\Local\Temp\294ad75f41aedb3c48eaf9d6358fa780920d5270a9d45151ceda767b7ee9600b.exe
"C:\Users\Admin\AppData\Local\Temp\294ad75f41aedb3c48eaf9d6358fa780920d5270a9d45151ceda767b7ee9600b.exe" --Admin IsNotAutoStart IsNotTask
C:\Users\Admin\AppData\Local\Temp\294ad75f41aedb3c48eaf9d6358fa780920d5270a9d45151ceda767b7ee9600b.exe
"C:\Users\Admin\AppData\Local\Temp\294ad75f41aedb3c48eaf9d6358fa780920d5270a9d45151ceda767b7ee9600b.exe" --Admin IsNotAutoStart IsNotTask
C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 4084 -ip 4084
C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 4084 -s 568
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 --mojo-platform-channel-handle=4076 --field-trial-handle=2900,i,14549994492153927475,12895178890800740987,262144 --variations-seed-version /prefetch:8
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | 241.150.49.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 216.197.17.2.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 | 220.139.67.172.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 157.123.68.40.in-addr.arpa | udp |
| US | 20.231.121.79:80 | tcp | |
| US | 8.8.8.8:53 | 18.31.95.13.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 67.169.217.172.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 172.210.232.199.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 23.159.190.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 95.221.229.192.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 228.249.119.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 97.17.167.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 249.197.17.2.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 31.243.111.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 241.197.17.2.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 27.173.189.20.in-addr.arpa | udp |
Files
memory/1844-1-0x0000000004B00000-0x0000000004BA1000-memory.dmp
memory/1844-2-0x0000000004BB0000-0x0000000004CCB000-memory.dmp
memory/32-3-0x0000000000400000-0x0000000000537000-memory.dmp
memory/32-4-0x0000000000400000-0x0000000000537000-memory.dmp
memory/32-5-0x0000000000400000-0x0000000000537000-memory.dmp
memory/32-6-0x0000000000400000-0x0000000000537000-memory.dmp
C:\Users\Admin\AppData\Local\4fecf919-6600-4481-a645-0e96ffb38cad\294ad75f41aedb3c48eaf9d6358fa780920d5270a9d45151ceda767b7ee9600b.exe
| MD5 | f1cfe760eb1c2a1b4c59558871649106 |
| SHA1 | e073e09713891f07988b3f1292df22e41753c412 |
| SHA256 | 294ad75f41aedb3c48eaf9d6358fa780920d5270a9d45151ceda767b7ee9600b |
| SHA512 | 7821f46cdf3b514365ea195051d3788cfd8e95c493528b5073a4eae2c5bbe37c79b1d30db99eab95f4331a3590fad7529926acf1f711fc3cf724d01a40ac9f9a |
memory/32-16-0x0000000000400000-0x0000000000537000-memory.dmp
memory/2500-20-0x0000000004A40000-0x0000000004AD5000-memory.dmp
memory/4084-22-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4084-25-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4084-23-0x0000000000400000-0x0000000000537000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2024-04-17 10:40
Reported
2024-04-17 10:43
Platform
win11-20240412-en
Max time kernel
147s
Max time network
150s
Command Line
Signatures
Detected Djvu ransomware
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
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| N/A | N/A | N/A | N/A |
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-1-5-21-2718508534-2116753757-2794822388-1000\Software\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\f6b6724e-3ec8-4032-a4e1-56c925fac715\\294ad75f41aedb3c48eaf9d6358fa780920d5270a9d45151ceda767b7ee9600b.exe\" --AutoStart" | C:\Users\Admin\AppData\Local\Temp\294ad75f41aedb3c48eaf9d6358fa780920d5270a9d45151ceda767b7ee9600b.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 3736 set thread context of 3516 | N/A | C:\Users\Admin\AppData\Local\Temp\294ad75f41aedb3c48eaf9d6358fa780920d5270a9d45151ceda767b7ee9600b.exe | C:\Users\Admin\AppData\Local\Temp\294ad75f41aedb3c48eaf9d6358fa780920d5270a9d45151ceda767b7ee9600b.exe |
| PID 1168 set thread context of 2916 | N/A | C:\Users\Admin\AppData\Local\Temp\294ad75f41aedb3c48eaf9d6358fa780920d5270a9d45151ceda767b7ee9600b.exe | C:\Users\Admin\AppData\Local\Temp\294ad75f41aedb3c48eaf9d6358fa780920d5270a9d45151ceda767b7ee9600b.exe |
Enumerates physical storage devices
Suspicious behavior: EnumeratesProcesses
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\294ad75f41aedb3c48eaf9d6358fa780920d5270a9d45151ceda767b7ee9600b.exe
"C:\Users\Admin\AppData\Local\Temp\294ad75f41aedb3c48eaf9d6358fa780920d5270a9d45151ceda767b7ee9600b.exe"
C:\Users\Admin\AppData\Local\Temp\294ad75f41aedb3c48eaf9d6358fa780920d5270a9d45151ceda767b7ee9600b.exe
"C:\Users\Admin\AppData\Local\Temp\294ad75f41aedb3c48eaf9d6358fa780920d5270a9d45151ceda767b7ee9600b.exe"
C:\Windows\SysWOW64\icacls.exe
icacls "C:\Users\Admin\AppData\Local\f6b6724e-3ec8-4032-a4e1-56c925fac715" /deny *S-1-1-0:(OI)(CI)(DE,DC)
C:\Users\Admin\AppData\Local\Temp\294ad75f41aedb3c48eaf9d6358fa780920d5270a9d45151ceda767b7ee9600b.exe
"C:\Users\Admin\AppData\Local\Temp\294ad75f41aedb3c48eaf9d6358fa780920d5270a9d45151ceda767b7ee9600b.exe" --Admin IsNotAutoStart IsNotTask
C:\Users\Admin\AppData\Local\Temp\294ad75f41aedb3c48eaf9d6358fa780920d5270a9d45151ceda767b7ee9600b.exe
"C:\Users\Admin\AppData\Local\Temp\294ad75f41aedb3c48eaf9d6358fa780920d5270a9d45151ceda767b7ee9600b.exe" --Admin IsNotAutoStart IsNotTask
Network
| Country | Destination | Domain | Proto |
| 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 | 8.8.8.8.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 220.139.67.172.in-addr.arpa | udp |
| US | 172.67.139.220:443 | api.2ip.ua | tcp |
| KR | 211.119.84.111:80 | sajdfue.com | tcp |
| CO | 186.145.236.18:80 | sdfjhuz.com | tcp |
| KR | 211.119.84.111:80 | sajdfue.com | tcp |
| KR | 211.119.84.111:80 | sajdfue.com | tcp |
| KR | 211.119.84.111:80 | sajdfue.com | tcp |
| KR | 211.119.84.111:80 | sajdfue.com | tcp |
Files
memory/3736-1-0x0000000004B00000-0x0000000004B9B000-memory.dmp
memory/3736-2-0x0000000004BA0000-0x0000000004CBB000-memory.dmp
memory/3516-3-0x0000000000400000-0x0000000000537000-memory.dmp
memory/3516-4-0x0000000000400000-0x0000000000537000-memory.dmp
memory/3516-5-0x0000000000400000-0x0000000000537000-memory.dmp
memory/3516-6-0x0000000000400000-0x0000000000537000-memory.dmp
C:\Users\Admin\AppData\Local\f6b6724e-3ec8-4032-a4e1-56c925fac715\294ad75f41aedb3c48eaf9d6358fa780920d5270a9d45151ceda767b7ee9600b.exe
| MD5 | f1cfe760eb1c2a1b4c59558871649106 |
| SHA1 | e073e09713891f07988b3f1292df22e41753c412 |
| SHA256 | 294ad75f41aedb3c48eaf9d6358fa780920d5270a9d45151ceda767b7ee9600b |
| SHA512 | 7821f46cdf3b514365ea195051d3788cfd8e95c493528b5073a4eae2c5bbe37c79b1d30db99eab95f4331a3590fad7529926acf1f711fc3cf724d01a40ac9f9a |
memory/3516-17-0x0000000000400000-0x0000000000537000-memory.dmp
memory/1168-20-0x0000000004AB0000-0x0000000004B4A000-memory.dmp
memory/2916-22-0x0000000000400000-0x0000000000537000-memory.dmp
memory/2916-23-0x0000000000400000-0x0000000000537000-memory.dmp
memory/2916-24-0x0000000000400000-0x0000000000537000-memory.dmp
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\CAF4703619713E3F18D8A9D5D88D6288_F2DAF19C1F776537105D08FC8D978464
| MD5 | 3b588eca3af3a6762c981a74ca2a9d99 |
| SHA1 | 984fe9c1a0162c106c8c91189026a69a1fbb1bdc |
| SHA256 | 6d92c9541d66892527ae8e1d75718c3bc972b542fe24b22e149516c082622eac |
| SHA512 | 9f1e6a127526aa3e578e44d567daf6be23c64817950d5c73f278768baaffc4b90f1090af61f8140f55565eac7512a749b25f6b455063986a655dc6486cec6140 |
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\24BD96D5497F70B3F510A6B53CD43F3E_3A89246FB90C5EE6620004F1AE0EB0EA
| MD5 | 84cc91708c444c30647ef07922bac2f1 |
| SHA1 | 97fec2794e5f14b4a9e54366d723d781161d7fb9 |
| SHA256 | 3e95b831913d3d7205a09c98cc185943fd810f6e2582607a54fa1e9cc30731aa |
| SHA512 | cc75685d2259bd362c076ce4941e9ce19d129801a9337e5d44f91de332d67f64f921d1a5870bf9ab5375ad2bc95a98398d7de91a8b72887767532e5933b3a175 |
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\24BD96D5497F70B3F510A6B53CD43F3E_3A89246FB90C5EE6620004F1AE0EB0EA
| MD5 | 0d93e70033faed62502680b3dc19d84a |
| SHA1 | 0f725c499bf535cc682ed0ae3bc07235b5e00c5b |
| SHA256 | 19e7cca4d7247d0e6af96eb651e53e535f737e44da7f911e878eb298aeddf403 |
| SHA512 | c0ca4d61b29a05629371e1186607b4f2e917391a45866ab73d7400d7867baae77e8edaac4452ca3f0963be5d8ddc46840ec8334e602b974c59b3c5b08a7987cf |
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\CAF4703619713E3F18D8A9D5D88D6288_F2DAF19C1F776537105D08FC8D978464
| MD5 | 8202a1cd02e7d69597995cabbe881a12 |
| SHA1 | 8858d9d934b7aa9330ee73de6c476acf19929ff6 |
| SHA256 | 58f381c3a0a0ace6321da22e40bd44a597bd98b9c9390ab9258426b5cf75a7a5 |
| SHA512 | 97ba9fceab995d4bef706f8deef99e06862999734ebe6a05832c710104479c6337cbf0a76e1c1e0f91566a61334dc100d837dfd049e20da765fe49def684f9c9 |
memory/2916-29-0x0000000000400000-0x0000000000537000-memory.dmp
memory/2916-30-0x0000000000400000-0x0000000000537000-memory.dmp
memory/2916-31-0x0000000000400000-0x0000000000537000-memory.dmp
memory/2916-34-0x0000000000400000-0x0000000000537000-memory.dmp
memory/2916-36-0x0000000000400000-0x0000000000537000-memory.dmp
memory/2916-37-0x0000000000400000-0x0000000000537000-memory.dmp
memory/2916-38-0x0000000000400000-0x0000000000537000-memory.dmp
memory/2916-39-0x0000000000400000-0x0000000000537000-memory.dmp