Analysis Overview
SHA256
79147711755a81a678f0ae1de32757babf1ce43ad8f9375a36bfde621e86ed6b
Threat Level: Known bad
The file 79147711755a81a678f0ae1de32757babf1ce43ad8f9375a36bfde621e86ed6b was found to be: Known bad.
Malicious Activity Summary
Djvu Ransomware
Detected Djvu ransomware
Modifies file permissions
Checks computer location settings
Adds Run key to start application
Looks up external IP address via web service
Suspicious use of SetThreadContext
Enumerates physical storage devices
Unsigned PE
Suspicious behavior: EnumeratesProcesses
Suspicious use of WriteProcessMemory
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-04-15 19:56
Signatures
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2024-04-15 19:56
Reported
2024-04-15 19:58
Platform
win10v2004-20240412-en
Max time kernel
143s
Max time network
140s
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-1-5-21-4084619521-2220719027-1909462854-1000\Control Panel\International\Geo\Nation | C:\Users\Admin\AppData\Local\Temp\79147711755a81a678f0ae1de32757babf1ce43ad8f9375a36bfde621e86ed6b.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-1-5-21-4084619521-2220719027-1909462854-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\68012a70-3a11-4ed5-b6c2-ff58a39a1b12\\79147711755a81a678f0ae1de32757babf1ce43ad8f9375a36bfde621e86ed6b.exe\" --AutoStart" | C:\Users\Admin\AppData\Local\Temp\79147711755a81a678f0ae1de32757babf1ce43ad8f9375a36bfde621e86ed6b.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 4004 set thread context of 2848 | N/A | C:\Users\Admin\AppData\Local\Temp\79147711755a81a678f0ae1de32757babf1ce43ad8f9375a36bfde621e86ed6b.exe | C:\Users\Admin\AppData\Local\Temp\79147711755a81a678f0ae1de32757babf1ce43ad8f9375a36bfde621e86ed6b.exe |
| PID 812 set thread context of 2188 | N/A | C:\Users\Admin\AppData\Local\Temp\79147711755a81a678f0ae1de32757babf1ce43ad8f9375a36bfde621e86ed6b.exe | C:\Users\Admin\AppData\Local\Temp\79147711755a81a678f0ae1de32757babf1ce43ad8f9375a36bfde621e86ed6b.exe |
Enumerates physical storage devices
Suspicious behavior: EnumeratesProcesses
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\79147711755a81a678f0ae1de32757babf1ce43ad8f9375a36bfde621e86ed6b.exe
"C:\Users\Admin\AppData\Local\Temp\79147711755a81a678f0ae1de32757babf1ce43ad8f9375a36bfde621e86ed6b.exe"
C:\Users\Admin\AppData\Local\Temp\79147711755a81a678f0ae1de32757babf1ce43ad8f9375a36bfde621e86ed6b.exe
"C:\Users\Admin\AppData\Local\Temp\79147711755a81a678f0ae1de32757babf1ce43ad8f9375a36bfde621e86ed6b.exe"
C:\Windows\SysWOW64\icacls.exe
icacls "C:\Users\Admin\AppData\Local\68012a70-3a11-4ed5-b6c2-ff58a39a1b12" /deny *S-1-1-0:(OI)(CI)(DE,DC)
C:\Users\Admin\AppData\Local\Temp\79147711755a81a678f0ae1de32757babf1ce43ad8f9375a36bfde621e86ed6b.exe
"C:\Users\Admin\AppData\Local\Temp\79147711755a81a678f0ae1de32757babf1ce43ad8f9375a36bfde621e86ed6b.exe" --Admin IsNotAutoStart IsNotTask
C:\Users\Admin\AppData\Local\Temp\79147711755a81a678f0ae1de32757babf1ce43ad8f9375a36bfde621e86ed6b.exe
"C:\Users\Admin\AppData\Local\Temp\79147711755a81a678f0ae1de32757babf1ce43ad8f9375a36bfde621e86ed6b.exe" --Admin IsNotAutoStart IsNotTask
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | 140.32.126.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | api.2ip.ua | udp |
| US | 104.21.65.24:443 | api.2ip.ua | tcp |
| US | 8.8.8.8:53 | 241.154.82.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 24.65.21.104.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 249.197.17.2.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 3.180.250.142.in-addr.arpa | udp |
| US | 104.21.65.24:443 | api.2ip.ua | tcp |
| US | 8.8.8.8:53 | 21.114.53.23.in-addr.arpa | udp |
| US | 8.8.8.8:53 | sdfjhuz.com | udp |
| US | 8.8.8.8:53 | sajdfue.com | udp |
| MX | 189.195.132.134:80 | sajdfue.com | tcp |
| LY | 102.218.198.12:80 | sdfjhuz.com | tcp |
| MX | 189.195.132.134:80 | sajdfue.com | tcp |
| US | 8.8.8.8:53 | 12.198.218.102.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 134.132.195.189.in-addr.arpa | udp |
| MX | 189.195.132.134:80 | sajdfue.com | tcp |
| MX | 189.195.132.134:80 | sajdfue.com | tcp |
| MX | 189.195.132.134:80 | sajdfue.com | tcp |
| US | 8.8.8.8:53 | 26.165.165.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 171.39.242.20.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 | 48.229.111.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 171.117.168.52.in-addr.arpa | udp |
Files
memory/4004-1-0x0000000004AF0000-0x0000000004B8A000-memory.dmp
memory/4004-2-0x0000000004B90000-0x0000000004CAB000-memory.dmp
memory/2848-3-0x0000000000400000-0x0000000000537000-memory.dmp
memory/2848-4-0x0000000000400000-0x0000000000537000-memory.dmp
memory/2848-5-0x0000000000400000-0x0000000000537000-memory.dmp
memory/2848-6-0x0000000000400000-0x0000000000537000-memory.dmp
C:\Users\Admin\AppData\Local\68012a70-3a11-4ed5-b6c2-ff58a39a1b12\79147711755a81a678f0ae1de32757babf1ce43ad8f9375a36bfde621e86ed6b.exe
| MD5 | cabc5d4f81025ea43f2477adb2e2627d |
| SHA1 | f4273023a6efe7896d1f6ef9ba1ad5c04e7fe3a7 |
| SHA256 | 79147711755a81a678f0ae1de32757babf1ce43ad8f9375a36bfde621e86ed6b |
| SHA512 | f97a6c0d32ed8bbdeacf29a1a9f84458bc26801b86504a90594652aef2cbce30cfc96407c453d171f1d3072a7e402bd26871f1fdd3e41e5a5143576b17e4ad4f |
memory/2848-17-0x0000000000400000-0x0000000000537000-memory.dmp
memory/812-20-0x00000000049C0000-0x0000000004A53000-memory.dmp
memory/2188-22-0x0000000000400000-0x0000000000537000-memory.dmp
memory/2188-23-0x0000000000400000-0x0000000000537000-memory.dmp
memory/2188-24-0x0000000000400000-0x0000000000537000-memory.dmp
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 | 5ef3c52b977a64e856381950e6ad7d14 |
| SHA1 | 2f302e79ed27952c3d558fc8c44080a6308ddbb6 |
| SHA256 | 3db56af8bcd35aef1f0942cd429003b135cd0c40c915ad43cdcaa9fa178649d0 |
| SHA512 | a0cf4c19c9b6c6185a967846fc7840bc1cd18cd05ba61775a1be795a771baf33d7add1df0b35a5dc6ad37808e6209ab7b027d465bb0e8e90191103596945e26e |
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 | 6b3319425a05670ca0e7a748830b9c33 |
| SHA1 | 616704b9907bd8809a8cff8cdaea574b17b2eb64 |
| SHA256 | a1b0b92b65dbafded44431600167c09d14f41e524c680c6ea1f6f3ea78345914 |
| SHA512 | 9f7049f5ea3aceeb333476fe4cf452ad6139c676379c11eb4c45fa22dd166b3515874176611a41ebbb86cdfad9ec407014f8ea4a306034fdfaa603b3e2169b62 |
memory/2188-29-0x0000000000400000-0x0000000000537000-memory.dmp
memory/2188-30-0x0000000000400000-0x0000000000537000-memory.dmp
memory/2188-31-0x0000000000400000-0x0000000000537000-memory.dmp
memory/2188-34-0x0000000000400000-0x0000000000537000-memory.dmp
memory/2188-37-0x0000000000400000-0x0000000000537000-memory.dmp
memory/2188-36-0x0000000000400000-0x0000000000537000-memory.dmp
memory/2188-38-0x0000000000400000-0x0000000000537000-memory.dmp
memory/2188-39-0x0000000000400000-0x0000000000537000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2024-04-15 19:56
Reported
2024-04-15 19:58
Platform
win11-20240412-en
Max time kernel
149s
Max time network
157s
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-1-5-21-243033537-3771492294-1461557691-1000\Software\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\2db20583-a3a5-44bb-b1ae-fd0eebffe91c\\79147711755a81a678f0ae1de32757babf1ce43ad8f9375a36bfde621e86ed6b.exe\" --AutoStart" | C:\Users\Admin\AppData\Local\Temp\79147711755a81a678f0ae1de32757babf1ce43ad8f9375a36bfde621e86ed6b.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 2040 set thread context of 4804 | N/A | C:\Users\Admin\AppData\Local\Temp\79147711755a81a678f0ae1de32757babf1ce43ad8f9375a36bfde621e86ed6b.exe | C:\Users\Admin\AppData\Local\Temp\79147711755a81a678f0ae1de32757babf1ce43ad8f9375a36bfde621e86ed6b.exe |
| PID 1856 set thread context of 1920 | N/A | C:\Users\Admin\AppData\Local\Temp\79147711755a81a678f0ae1de32757babf1ce43ad8f9375a36bfde621e86ed6b.exe | C:\Users\Admin\AppData\Local\Temp\79147711755a81a678f0ae1de32757babf1ce43ad8f9375a36bfde621e86ed6b.exe |
Enumerates physical storage devices
Suspicious behavior: EnumeratesProcesses
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\79147711755a81a678f0ae1de32757babf1ce43ad8f9375a36bfde621e86ed6b.exe
"C:\Users\Admin\AppData\Local\Temp\79147711755a81a678f0ae1de32757babf1ce43ad8f9375a36bfde621e86ed6b.exe"
C:\Users\Admin\AppData\Local\Temp\79147711755a81a678f0ae1de32757babf1ce43ad8f9375a36bfde621e86ed6b.exe
"C:\Users\Admin\AppData\Local\Temp\79147711755a81a678f0ae1de32757babf1ce43ad8f9375a36bfde621e86ed6b.exe"
C:\Windows\SysWOW64\icacls.exe
icacls "C:\Users\Admin\AppData\Local\2db20583-a3a5-44bb-b1ae-fd0eebffe91c" /deny *S-1-1-0:(OI)(CI)(DE,DC)
C:\Users\Admin\AppData\Local\Temp\79147711755a81a678f0ae1de32757babf1ce43ad8f9375a36bfde621e86ed6b.exe
"C:\Users\Admin\AppData\Local\Temp\79147711755a81a678f0ae1de32757babf1ce43ad8f9375a36bfde621e86ed6b.exe" --Admin IsNotAutoStart IsNotTask
C:\Users\Admin\AppData\Local\Temp\79147711755a81a678f0ae1de32757babf1ce43ad8f9375a36bfde621e86ed6b.exe
"C:\Users\Admin\AppData\Local\Temp\79147711755a81a678f0ae1de32757babf1ce43ad8f9375a36bfde621e86ed6b.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 | 8.8.8.8:53 | 24.65.21.104.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 240.221.184.93.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 3.180.250.142.in-addr.arpa | udp |
| US | 104.21.65.24:443 | api.2ip.ua | tcp |
| MX | 189.195.132.134:80 | sajdfue.com | tcp |
| KR | 123.140.161.243:80 | sdfjhuz.com | tcp |
| MX | 189.195.132.134:80 | sajdfue.com | tcp |
| MX | 189.195.132.134:80 | sajdfue.com | tcp |
| MX | 189.195.132.134:80 | sajdfue.com | tcp |
| MX | 189.195.132.134:80 | sajdfue.com | tcp |
Files
memory/2040-1-0x0000000004BF0000-0x0000000004C8A000-memory.dmp
memory/2040-2-0x0000000004C90000-0x0000000004DAB000-memory.dmp
memory/4804-3-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4804-4-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4804-5-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4804-6-0x0000000000400000-0x0000000000537000-memory.dmp
C:\Users\Admin\AppData\Local\2db20583-a3a5-44bb-b1ae-fd0eebffe91c\79147711755a81a678f0ae1de32757babf1ce43ad8f9375a36bfde621e86ed6b.exe
| MD5 | cabc5d4f81025ea43f2477adb2e2627d |
| SHA1 | f4273023a6efe7896d1f6ef9ba1ad5c04e7fe3a7 |
| SHA256 | 79147711755a81a678f0ae1de32757babf1ce43ad8f9375a36bfde621e86ed6b |
| SHA512 | f97a6c0d32ed8bbdeacf29a1a9f84458bc26801b86504a90594652aef2cbce30cfc96407c453d171f1d3072a7e402bd26871f1fdd3e41e5a5143576b17e4ad4f |
memory/4804-17-0x0000000000400000-0x0000000000537000-memory.dmp
memory/1856-20-0x0000000004AB0000-0x0000000004B46000-memory.dmp
memory/1920-22-0x0000000000400000-0x0000000000537000-memory.dmp
memory/1920-23-0x0000000000400000-0x0000000000537000-memory.dmp
memory/1920-24-0x0000000000400000-0x0000000000537000-memory.dmp
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\24BD96D5497F70B3F510A6B53CD43F3E_3A89246FB90C5EE6620004F1AE0EB0EA
| MD5 | f387c740c473efe63d4032941654a5be |
| SHA1 | f7282763258453833c4be2ddae471f3e920a5263 |
| SHA256 | 81ac7d07ea325edb8c2de60894636507c7c9b0c83085d87834967c879b419136 |
| SHA512 | 22c9592f91e6bc105040cb1081315d0d9b453363f908ea2fddd43737b995056f1290d58be83fb8e894713888129c0eb3d89b2f1c2dc21ab5fe2ad0677823dfdd |
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 | c0a2510d40b44fc6b4a3348742653003 |
| SHA1 | b1653f2d804e63f8e1ac992d7e69c75125d26e13 |
| SHA256 | 4f74e03bfa79c12f4d2b5f69e2d0e5eb79babce52a7b1636a5b8bac8239071cd |
| SHA512 | 2771108809fd3955ab158837204fb14b216c532e24b8065bceefdaf51c2330d409e07d5d3b4b1162ef70fc198e7b0e2b6fb2ed67dd7f97b6efb3ad2b8b50e43e |
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\24BD96D5497F70B3F510A6B53CD43F3E_3A89246FB90C5EE6620004F1AE0EB0EA
| MD5 | 3c6a98dff2c8e5d41183fb934602bccf |
| SHA1 | 389eea4f6c8b9a19dd6efd65b2c979feeb4262a7 |
| SHA256 | 8c5e90026091280487ae42d5c0f266528cacb6de18c7f3d693ecfdb547b06ac8 |
| SHA512 | fde8e5de812641dc896e8d8182dcf4244670e431f3310aba576f0f330a9d8a4221eb7513005e9755512d0c645cbf164c4c5f8872689d2e52a58b3f39668de8fd |
memory/1920-29-0x0000000000400000-0x0000000000537000-memory.dmp
memory/1920-30-0x0000000000400000-0x0000000000537000-memory.dmp
memory/1920-31-0x0000000000400000-0x0000000000537000-memory.dmp
memory/1920-34-0x0000000000400000-0x0000000000537000-memory.dmp
memory/1920-36-0x0000000000400000-0x0000000000537000-memory.dmp
memory/1920-37-0x0000000000400000-0x0000000000537000-memory.dmp
memory/1920-38-0x0000000000400000-0x0000000000537000-memory.dmp
memory/1920-39-0x0000000000400000-0x0000000000537000-memory.dmp