Analysis Overview
SHA256
55b578abeac4dc12620a26126730aeb33e198f1d3ed5177682505760c0fcde76
Threat Level: Known bad
The file 55b578abeac4dc12620a26126730aeb33e198f1d3ed5177682505760c0fcde76 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
Suspicious behavior: EnumeratesProcesses
Suspicious use of WriteProcessMemory
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-04-15 19:26
Signatures
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2024-04-15 19:26
Reported
2024-04-15 19:29
Platform
win10v2004-20240412-en
Max time kernel
143s
Max time network
114s
Command Line
Signatures
Detected Djvu ransomware
| Description | Indicator | Process | Target |
| 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-1-5-21-2177723727-746291240-1644359950-1000\Control Panel\International\Geo\Nation | C:\Users\Admin\AppData\Local\Temp\55b578abeac4dc12620a26126730aeb33e198f1d3ed5177682505760c0fcde76.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-1-5-21-2177723727-746291240-1644359950-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\91cdf799-50a1-4918-9445-81594792f183\\55b578abeac4dc12620a26126730aeb33e198f1d3ed5177682505760c0fcde76.exe\" --AutoStart" | C:\Users\Admin\AppData\Local\Temp\55b578abeac4dc12620a26126730aeb33e198f1d3ed5177682505760c0fcde76.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 4440 set thread context of 1208 | N/A | C:\Users\Admin\AppData\Local\Temp\55b578abeac4dc12620a26126730aeb33e198f1d3ed5177682505760c0fcde76.exe | C:\Users\Admin\AppData\Local\Temp\55b578abeac4dc12620a26126730aeb33e198f1d3ed5177682505760c0fcde76.exe |
| PID 2168 set thread context of 2600 | N/A | C:\Users\Admin\AppData\Local\Temp\55b578abeac4dc12620a26126730aeb33e198f1d3ed5177682505760c0fcde76.exe | C:\Users\Admin\AppData\Local\Temp\55b578abeac4dc12620a26126730aeb33e198f1d3ed5177682505760c0fcde76.exe |
Enumerates physical storage devices
Suspicious behavior: EnumeratesProcesses
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\55b578abeac4dc12620a26126730aeb33e198f1d3ed5177682505760c0fcde76.exe
"C:\Users\Admin\AppData\Local\Temp\55b578abeac4dc12620a26126730aeb33e198f1d3ed5177682505760c0fcde76.exe"
C:\Users\Admin\AppData\Local\Temp\55b578abeac4dc12620a26126730aeb33e198f1d3ed5177682505760c0fcde76.exe
"C:\Users\Admin\AppData\Local\Temp\55b578abeac4dc12620a26126730aeb33e198f1d3ed5177682505760c0fcde76.exe"
C:\Windows\SysWOW64\icacls.exe
icacls "C:\Users\Admin\AppData\Local\91cdf799-50a1-4918-9445-81594792f183" /deny *S-1-1-0:(OI)(CI)(DE,DC)
C:\Users\Admin\AppData\Local\Temp\55b578abeac4dc12620a26126730aeb33e198f1d3ed5177682505760c0fcde76.exe
"C:\Users\Admin\AppData\Local\Temp\55b578abeac4dc12620a26126730aeb33e198f1d3ed5177682505760c0fcde76.exe" --Admin IsNotAutoStart IsNotTask
C:\Users\Admin\AppData\Local\Temp\55b578abeac4dc12620a26126730aeb33e198f1d3ed5177682505760c0fcde76.exe
"C:\Users\Admin\AppData\Local\Temp\55b578abeac4dc12620a26126730aeb33e198f1d3ed5177682505760c0fcde76.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 | g.bing.com | udp |
| US | 204.79.197.237:443 | g.bing.com | tcp |
| US | 8.8.8.8:53 | 71.159.190.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 9.228.82.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 205.178.17.96.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 220.139.67.172.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 237.197.79.204.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 3.180.250.142.in-addr.arpa | udp |
| US | 172.67.139.220:443 | api.2ip.ua | tcp |
| US | 8.8.8.8:53 | sdfjhuz.com | udp |
| US | 8.8.8.8:53 | sajdfue.com | udp |
| US | 8.8.8.8:53 | 21.114.53.23.in-addr.arpa | udp |
| MX | 189.232.19.193:80 | sajdfue.com | tcp |
| MX | 187.204.32.54:80 | sdfjhuz.com | tcp |
| MX | 189.232.19.193:80 | sajdfue.com | tcp |
| US | 8.8.8.8:53 | 193.19.232.189.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 54.32.204.187.in-addr.arpa | udp |
| MX | 189.232.19.193:80 | sajdfue.com | tcp |
| MX | 189.232.19.193:80 | sajdfue.com | tcp |
| MX | 189.232.19.193:80 | sajdfue.com | tcp |
| US | 8.8.8.8:53 | 103.169.127.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 56.126.166.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 140.71.91.104.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 240.221.184.93.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 22.236.111.52.in-addr.arpa | udp |
Files
memory/1208-4-0x0000000000400000-0x0000000000537000-memory.dmp
memory/1208-5-0x0000000000400000-0x0000000000537000-memory.dmp
memory/1208-6-0x0000000000400000-0x0000000000537000-memory.dmp
memory/1208-3-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4440-2-0x0000000004A70000-0x0000000004B8B000-memory.dmp
memory/4440-1-0x00000000049D0000-0x0000000004A6F000-memory.dmp
C:\Users\Admin\AppData\Local\91cdf799-50a1-4918-9445-81594792f183\55b578abeac4dc12620a26126730aeb33e198f1d3ed5177682505760c0fcde76.exe
| MD5 | 3e2828108fe38b09181ea613e630edb2 |
| SHA1 | aac8e6bd8bba210aa59621fcc88213e181873ec6 |
| SHA256 | 55b578abeac4dc12620a26126730aeb33e198f1d3ed5177682505760c0fcde76 |
| SHA512 | 5e12d56a995c01786f12547c7e5c02e03ed74a27c6f18ccb28d8751875416cf66509ba09e461b78b113241a023a8e69ef4e4a8df73689323cb33173d1b09e558 |
memory/1208-15-0x0000000000400000-0x0000000000537000-memory.dmp
memory/2600-20-0x0000000000400000-0x0000000000537000-memory.dmp
memory/2600-21-0x0000000000400000-0x0000000000537000-memory.dmp
memory/2600-22-0x0000000000400000-0x0000000000537000-memory.dmp
memory/2168-18-0x0000000004A40000-0x0000000004AD3000-memory.dmp
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 | 9885af92b72b49ec7ee1e9450de91e31 |
| SHA1 | 42ece4c7ab99c0bd30bd9ac2302cedd14191ce8a |
| SHA256 | 702b73212d82d94e3e0e0b02ed560c83409640d3fda200c2e21f67d37c854c1e |
| SHA512 | 60a3d96499bad3b41e8e60ad580d47d8abc8d790e62ca46313564313a23fcdb4423e4e4f3e394b080cbcd65ff3174b14de08265f766260812f098039ecf250db |
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\24BD96D5497F70B3F510A6B53CD43F3E_3A89246FB90C5EE6620004F1AE0EB0EA
| MD5 | 3c6a98dff2c8e5d41183fb934602bccf |
| SHA1 | 389eea4f6c8b9a19dd6efd65b2c979feeb4262a7 |
| SHA256 | 8c5e90026091280487ae42d5c0f266528cacb6de18c7f3d693ecfdb547b06ac8 |
| SHA512 | fde8e5de812641dc896e8d8182dcf4244670e431f3310aba576f0f330a9d8a4221eb7513005e9755512d0c645cbf164c4c5f8872689d2e52a58b3f39668de8fd |
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\24BD96D5497F70B3F510A6B53CD43F3E_3A89246FB90C5EE6620004F1AE0EB0EA
| MD5 | e91ab60736e7fd57b14a1be02a45fa57 |
| SHA1 | 43364689a7c8afd6207360d0f7733a83591dd32b |
| SHA256 | c3cf903404938336567945b3ba459c44cb4e9c96bcf5fd472a7be347b59508ed |
| SHA512 | c98abf7f546338c5d8bf69da7218aa0e6e640d7021947e736942547a2085c85320ca6e9f220e9f1d77b2c1c995e698ae36cfc56ef844663ebf8d0738f33dca1a |
memory/2600-27-0x0000000000400000-0x0000000000537000-memory.dmp
memory/2600-28-0x0000000000400000-0x0000000000537000-memory.dmp
memory/2600-29-0x0000000000400000-0x0000000000537000-memory.dmp
memory/2600-34-0x0000000000400000-0x0000000000537000-memory.dmp
memory/2600-35-0x0000000000400000-0x0000000000537000-memory.dmp
memory/2600-32-0x0000000000400000-0x0000000000537000-memory.dmp
memory/2600-36-0x0000000000400000-0x0000000000537000-memory.dmp
memory/2600-37-0x0000000000400000-0x0000000000537000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2024-04-15 19:26
Reported
2024-04-15 19:29
Platform
win11-20240412-en
Max time kernel
145s
Max time network
128s
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-1-5-21-8492748-3358837828-1435473090-1000\Software\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\8139baff-acbe-4a61-a438-c8e174823f4c\\55b578abeac4dc12620a26126730aeb33e198f1d3ed5177682505760c0fcde76.exe\" --AutoStart" | C:\Users\Admin\AppData\Local\Temp\55b578abeac4dc12620a26126730aeb33e198f1d3ed5177682505760c0fcde76.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 228 set thread context of 3580 | N/A | C:\Users\Admin\AppData\Local\Temp\55b578abeac4dc12620a26126730aeb33e198f1d3ed5177682505760c0fcde76.exe | C:\Users\Admin\AppData\Local\Temp\55b578abeac4dc12620a26126730aeb33e198f1d3ed5177682505760c0fcde76.exe |
| PID 3648 set thread context of 4828 | N/A | C:\Users\Admin\AppData\Local\Temp\55b578abeac4dc12620a26126730aeb33e198f1d3ed5177682505760c0fcde76.exe | C:\Users\Admin\AppData\Local\Temp\55b578abeac4dc12620a26126730aeb33e198f1d3ed5177682505760c0fcde76.exe |
Enumerates physical storage devices
Suspicious behavior: EnumeratesProcesses
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\55b578abeac4dc12620a26126730aeb33e198f1d3ed5177682505760c0fcde76.exe
"C:\Users\Admin\AppData\Local\Temp\55b578abeac4dc12620a26126730aeb33e198f1d3ed5177682505760c0fcde76.exe"
C:\Users\Admin\AppData\Local\Temp\55b578abeac4dc12620a26126730aeb33e198f1d3ed5177682505760c0fcde76.exe
"C:\Users\Admin\AppData\Local\Temp\55b578abeac4dc12620a26126730aeb33e198f1d3ed5177682505760c0fcde76.exe"
C:\Windows\SysWOW64\icacls.exe
icacls "C:\Users\Admin\AppData\Local\8139baff-acbe-4a61-a438-c8e174823f4c" /deny *S-1-1-0:(OI)(CI)(DE,DC)
C:\Users\Admin\AppData\Local\Temp\55b578abeac4dc12620a26126730aeb33e198f1d3ed5177682505760c0fcde76.exe
"C:\Users\Admin\AppData\Local\Temp\55b578abeac4dc12620a26126730aeb33e198f1d3ed5177682505760c0fcde76.exe" --Admin IsNotAutoStart IsNotTask
C:\Users\Admin\AppData\Local\Temp\55b578abeac4dc12620a26126730aeb33e198f1d3ed5177682505760c0fcde76.exe
"C:\Users\Admin\AppData\Local\Temp\55b578abeac4dc12620a26126730aeb33e198f1d3ed5177682505760c0fcde76.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 | 220.139.67.172.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 240.221.184.93.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 3.180.250.142.in-addr.arpa | udp |
| US | 172.67.139.220:443 | api.2ip.ua | tcp |
| UY | 179.27.75.59:80 | sajdfue.com | tcp |
| JM | 63.143.98.185:80 | sajdfue.com | tcp |
| UY | 179.27.75.59:80 | sajdfue.com | tcp |
| UY | 179.27.75.59:80 | sajdfue.com | tcp |
| UY | 179.27.75.59:80 | sajdfue.com | tcp |
| UY | 179.27.75.59:80 | sajdfue.com | tcp |
Files
memory/228-1-0x0000000004BF0000-0x0000000004C85000-memory.dmp
memory/228-2-0x0000000004C90000-0x0000000004DAB000-memory.dmp
memory/3580-3-0x0000000000400000-0x0000000000537000-memory.dmp
memory/3580-4-0x0000000000400000-0x0000000000537000-memory.dmp
memory/3580-5-0x0000000000400000-0x0000000000537000-memory.dmp
memory/3580-6-0x0000000000400000-0x0000000000537000-memory.dmp
C:\Users\Admin\AppData\Local\8139baff-acbe-4a61-a438-c8e174823f4c\55b578abeac4dc12620a26126730aeb33e198f1d3ed5177682505760c0fcde76.exe
| MD5 | 3e2828108fe38b09181ea613e630edb2 |
| SHA1 | aac8e6bd8bba210aa59621fcc88213e181873ec6 |
| SHA256 | 55b578abeac4dc12620a26126730aeb33e198f1d3ed5177682505760c0fcde76 |
| SHA512 | 5e12d56a995c01786f12547c7e5c02e03ed74a27c6f18ccb28d8751875416cf66509ba09e461b78b113241a023a8e69ef4e4a8df73689323cb33173d1b09e558 |
memory/3580-17-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4828-22-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4828-23-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4828-24-0x0000000000400000-0x0000000000537000-memory.dmp
memory/3648-20-0x0000000004AB0000-0x0000000004B51000-memory.dmp
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 | ec512ccb4ab710e350df0800678de7df |
| SHA1 | 98351a9f7f118bb6c7935d81698da29f7c70838c |
| SHA256 | 9d582d44f37afa569ecef47bc03a5160bd9823173a0e2cdf4c95db2332f9e04c |
| SHA512 | 0ba5e506190cb1a7041cb66b92ce1572cf9022006a49d1c0bbe90c790d4c5186b477dbed7fe8699323d333823639a776fdc0542551aa08a8e139076d5a972b55 |
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\24BD96D5497F70B3F510A6B53CD43F3E_3A89246FB90C5EE6620004F1AE0EB0EA
| MD5 | 3c6a98dff2c8e5d41183fb934602bccf |
| SHA1 | 389eea4f6c8b9a19dd6efd65b2c979feeb4262a7 |
| SHA256 | 8c5e90026091280487ae42d5c0f266528cacb6de18c7f3d693ecfdb547b06ac8 |
| SHA512 | fde8e5de812641dc896e8d8182dcf4244670e431f3310aba576f0f330a9d8a4221eb7513005e9755512d0c645cbf164c4c5f8872689d2e52a58b3f39668de8fd |
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\24BD96D5497F70B3F510A6B53CD43F3E_3A89246FB90C5EE6620004F1AE0EB0EA
| MD5 | d6ce54e8befb2ffcc06141beb5c4fef5 |
| SHA1 | 2045642322333bf2fbe6997900a1d6b729c6d284 |
| SHA256 | 3e0d549a17fb65712518918cf113810972d491c303cda7acc80ff3324d9365b9 |
| SHA512 | ecf7431c30367c5a475dc160ca37a52c5924bd932e7005f466c3035a7f8c6b9198268a7fb158f0b6d5d22a8e2d68e330987291951c6c8e708b8e6bc57767b074 |
memory/4828-30-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4828-29-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4828-31-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4828-34-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4828-37-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4828-36-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4828-38-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4828-39-0x0000000000400000-0x0000000000537000-memory.dmp