Analysis Overview
SHA256
2f75621a9d1b0e38358b5a1e21bf0ddddadb8a6a1d714d761efa77024241a138
Threat Level: Known bad
The file 2f75621a9d1b0e38358b5a1e21bf0ddddadb8a6a1d714d761efa77024241a138 was found to be: Known bad.
Malicious Activity Summary
Detected Djvu ransomware
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
2024-04-16 00:01
Signatures
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2024-04-16 00:01
Reported
2024-04-16 00:04
Platform
win10v2004-20240412-en
Max time kernel
147s
Max time network
155s
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-1-5-21-553605503-2331009851-2137262461-1000\Control Panel\International\Geo\Nation | C:\Users\Admin\AppData\Local\Temp\2f75621a9d1b0e38358b5a1e21bf0ddddadb8a6a1d714d761efa77024241a138.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-1-5-21-553605503-2331009851-2137262461-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\dafa3828-ae75-4115-83ce-b4cd1a24279c\\2f75621a9d1b0e38358b5a1e21bf0ddddadb8a6a1d714d761efa77024241a138.exe\" --AutoStart" | C:\Users\Admin\AppData\Local\Temp\2f75621a9d1b0e38358b5a1e21bf0ddddadb8a6a1d714d761efa77024241a138.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 2292 set thread context of 60 | N/A | C:\Users\Admin\AppData\Local\Temp\2f75621a9d1b0e38358b5a1e21bf0ddddadb8a6a1d714d761efa77024241a138.exe | C:\Users\Admin\AppData\Local\Temp\2f75621a9d1b0e38358b5a1e21bf0ddddadb8a6a1d714d761efa77024241a138.exe |
| PID 5060 set thread context of 4060 | N/A | C:\Users\Admin\AppData\Local\Temp\2f75621a9d1b0e38358b5a1e21bf0ddddadb8a6a1d714d761efa77024241a138.exe | C:\Users\Admin\AppData\Local\Temp\2f75621a9d1b0e38358b5a1e21bf0ddddadb8a6a1d714d761efa77024241a138.exe |
Enumerates physical storage devices
Suspicious behavior: EnumeratesProcesses
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\2f75621a9d1b0e38358b5a1e21bf0ddddadb8a6a1d714d761efa77024241a138.exe
"C:\Users\Admin\AppData\Local\Temp\2f75621a9d1b0e38358b5a1e21bf0ddddadb8a6a1d714d761efa77024241a138.exe"
C:\Users\Admin\AppData\Local\Temp\2f75621a9d1b0e38358b5a1e21bf0ddddadb8a6a1d714d761efa77024241a138.exe
"C:\Users\Admin\AppData\Local\Temp\2f75621a9d1b0e38358b5a1e21bf0ddddadb8a6a1d714d761efa77024241a138.exe"
C:\Windows\SysWOW64\icacls.exe
icacls "C:\Users\Admin\AppData\Local\dafa3828-ae75-4115-83ce-b4cd1a24279c" /deny *S-1-1-0:(OI)(CI)(DE,DC)
C:\Users\Admin\AppData\Local\Temp\2f75621a9d1b0e38358b5a1e21bf0ddddadb8a6a1d714d761efa77024241a138.exe
"C:\Users\Admin\AppData\Local\Temp\2f75621a9d1b0e38358b5a1e21bf0ddddadb8a6a1d714d761efa77024241a138.exe" --Admin IsNotAutoStart IsNotTask
C:\Users\Admin\AppData\Local\Temp\2f75621a9d1b0e38358b5a1e21bf0ddddadb8a6a1d714d761efa77024241a138.exe
"C:\Users\Admin\AppData\Local\Temp\2f75621a9d1b0e38358b5a1e21bf0ddddadb8a6a1d714d761efa77024241a138.exe" --Admin IsNotAutoStart IsNotTask
Network
| Country | Destination | Domain | Proto |
| 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 | 73.159.190.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 240.221.184.93.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 241.154.82.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 237.197.79.204.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 | 45.19.74.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 220.139.67.172.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 21.114.53.23.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 |
| ZA | 169.1.51.101:80 | sajdfue.com | tcp |
| PK | 116.58.10.60:80 | sdfjhuz.com | tcp |
| ZA | 169.1.51.101:80 | sajdfue.com | tcp |
| US | 8.8.8.8:53 | 60.10.58.116.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 101.51.1.169.in-addr.arpa | udp |
| ZA | 169.1.51.101:80 | sajdfue.com | tcp |
| ZA | 169.1.51.101:80 | sajdfue.com | tcp |
| ZA | 169.1.51.101:80 | sajdfue.com | tcp |
| US | 8.8.8.8:53 | 183.59.114.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 171.39.242.20.in-addr.arpa | udp |
| US | 52.111.229.43:443 | tcp | |
| US | 8.8.8.8:53 | 30.243.111.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 35.197.79.40.in-addr.arpa | udp |
Files
memory/2292-1-0x0000000004B30000-0x0000000004BC6000-memory.dmp
memory/2292-2-0x0000000004BD0000-0x0000000004CEB000-memory.dmp
memory/60-3-0x0000000000400000-0x0000000000537000-memory.dmp
memory/60-4-0x0000000000400000-0x0000000000537000-memory.dmp
memory/60-5-0x0000000000400000-0x0000000000537000-memory.dmp
memory/60-6-0x0000000000400000-0x0000000000537000-memory.dmp
C:\Users\Admin\AppData\Local\dafa3828-ae75-4115-83ce-b4cd1a24279c\2f75621a9d1b0e38358b5a1e21bf0ddddadb8a6a1d714d761efa77024241a138.exe
| MD5 | ebdd98ee7607a3d6300406ddcdb955b1 |
| SHA1 | 659a2dd87be33c334fc153c9a7d6867f4beea607 |
| SHA256 | 2f75621a9d1b0e38358b5a1e21bf0ddddadb8a6a1d714d761efa77024241a138 |
| SHA512 | d8f240d51c6ca1ddee7c1602cd397c39ddd4aab8d050bc454fdbbcb65b7663ab0f53708b981eb2daa8b85cfe5892242b8f575784409fb8795838647d6673e350 |
memory/60-15-0x0000000000400000-0x0000000000537000-memory.dmp
memory/5060-18-0x0000000004A00000-0x0000000004A95000-memory.dmp
memory/4060-20-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4060-21-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4060-22-0x0000000000400000-0x0000000000537000-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 | abd1057f75d426321573780e1e3e21cc |
| SHA1 | 528ae9bf35e5a85d7bfef9ed0d16d5f6b5ae8530 |
| SHA256 | 86c102bc1032a57f161f0c27e196d6eec00622129e7919d9b9a793d4fe7a07d4 |
| SHA512 | adbfc0f380a03792bd09441b06bae4d0fb3c3030b3b3880f91fddce4dfdc774d220de770dffd7baabd3c8fea90659a810e9a9f3f73ff7069253ffef328fa3256 |
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 | 7a33b03ec4f6168285117dddd7b4f2b3 |
| SHA1 | 2c4b71fc2713dba0efc0269cb45078c6b6eed50f |
| SHA256 | fdc51462614302a924a8b5567df082c05d3750a90ec8f00933b3ab298a506625 |
| SHA512 | 041ed3cb105c37f768be7b3ec089c5c63883eb2b29d9878b0c7c60d8f85cbf3b4184c06a579a91a8f6bf78b02716296c6957436a82e7b563e95d377656b9a52b |
memory/4060-27-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4060-28-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4060-29-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4060-32-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4060-34-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4060-35-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4060-36-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4060-37-0x0000000000400000-0x0000000000537000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2024-04-16 00:01
Reported
2024-04-16 00:04
Platform
win11-20240412-en
Max time kernel
146s
Max time network
154s
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-1-5-21-4041115548-3858121278-1660933110-1000\Software\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\0ec00c4b-da95-4020-b807-c94e2b29b681\\2f75621a9d1b0e38358b5a1e21bf0ddddadb8a6a1d714d761efa77024241a138.exe\" --AutoStart" | C:\Users\Admin\AppData\Local\Temp\2f75621a9d1b0e38358b5a1e21bf0ddddadb8a6a1d714d761efa77024241a138.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 3768 set thread context of 4864 | N/A | C:\Users\Admin\AppData\Local\Temp\2f75621a9d1b0e38358b5a1e21bf0ddddadb8a6a1d714d761efa77024241a138.exe | C:\Users\Admin\AppData\Local\Temp\2f75621a9d1b0e38358b5a1e21bf0ddddadb8a6a1d714d761efa77024241a138.exe |
| PID 3796 set thread context of 3732 | N/A | C:\Users\Admin\AppData\Local\Temp\2f75621a9d1b0e38358b5a1e21bf0ddddadb8a6a1d714d761efa77024241a138.exe | C:\Users\Admin\AppData\Local\Temp\2f75621a9d1b0e38358b5a1e21bf0ddddadb8a6a1d714d761efa77024241a138.exe |
Enumerates physical storage devices
Suspicious behavior: EnumeratesProcesses
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\2f75621a9d1b0e38358b5a1e21bf0ddddadb8a6a1d714d761efa77024241a138.exe
"C:\Users\Admin\AppData\Local\Temp\2f75621a9d1b0e38358b5a1e21bf0ddddadb8a6a1d714d761efa77024241a138.exe"
C:\Users\Admin\AppData\Local\Temp\2f75621a9d1b0e38358b5a1e21bf0ddddadb8a6a1d714d761efa77024241a138.exe
"C:\Users\Admin\AppData\Local\Temp\2f75621a9d1b0e38358b5a1e21bf0ddddadb8a6a1d714d761efa77024241a138.exe"
C:\Windows\SysWOW64\icacls.exe
icacls "C:\Users\Admin\AppData\Local\0ec00c4b-da95-4020-b807-c94e2b29b681" /deny *S-1-1-0:(OI)(CI)(DE,DC)
C:\Users\Admin\AppData\Local\Temp\2f75621a9d1b0e38358b5a1e21bf0ddddadb8a6a1d714d761efa77024241a138.exe
"C:\Users\Admin\AppData\Local\Temp\2f75621a9d1b0e38358b5a1e21bf0ddddadb8a6a1d714d761efa77024241a138.exe" --Admin IsNotAutoStart IsNotTask
C:\Users\Admin\AppData\Local\Temp\2f75621a9d1b0e38358b5a1e21bf0ddddadb8a6a1d714d761efa77024241a138.exe
"C:\Users\Admin\AppData\Local\Temp\2f75621a9d1b0e38358b5a1e21bf0ddddadb8a6a1d714d761efa77024241a138.exe" --Admin IsNotAutoStart IsNotTask
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 | 0.159.190.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 240.197.17.2.in-addr.arpa | udp |
| US | 172.67.139.220:443 | api.2ip.ua | tcp |
| US | 172.67.139.220:443 | api.2ip.ua | tcp |
| CO | 190.145.136.42:80 | sdfjhuz.com | tcp |
| MX | 189.181.27.55:80 | sajdfue.com | tcp |
| MX | 189.181.27.55:80 | sajdfue.com | tcp |
| MX | 189.181.27.55:80 | sajdfue.com | tcp |
| MX | 189.181.27.55:80 | sajdfue.com | tcp |
| MX | 189.181.27.55:80 | sajdfue.com | tcp |
| US | 204.79.197.200:443 | tse1.mm.bing.net | tcp |
| US | 204.79.197.200:443 | tse1.mm.bing.net | tcp |
| US | 204.79.197.200:443 | tse1.mm.bing.net | tcp |
| US | 204.79.197.200:443 | tse1.mm.bing.net | tcp |
Files
memory/3768-1-0x0000000004C50000-0x0000000004CE8000-memory.dmp
memory/3768-2-0x0000000004CF0000-0x0000000004E0B000-memory.dmp
memory/4864-3-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4864-4-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4864-5-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4864-6-0x0000000000400000-0x0000000000537000-memory.dmp
C:\Users\Admin\AppData\Local\0ec00c4b-da95-4020-b807-c94e2b29b681\2f75621a9d1b0e38358b5a1e21bf0ddddadb8a6a1d714d761efa77024241a138.exe
| MD5 | ebdd98ee7607a3d6300406ddcdb955b1 |
| SHA1 | 659a2dd87be33c334fc153c9a7d6867f4beea607 |
| SHA256 | 2f75621a9d1b0e38358b5a1e21bf0ddddadb8a6a1d714d761efa77024241a138 |
| SHA512 | d8f240d51c6ca1ddee7c1602cd397c39ddd4aab8d050bc454fdbbcb65b7663ab0f53708b981eb2daa8b85cfe5892242b8f575784409fb8795838647d6673e350 |
memory/4864-15-0x0000000000400000-0x0000000000537000-memory.dmp
memory/3796-18-0x00000000049C0000-0x0000000004A52000-memory.dmp
memory/3732-20-0x0000000000400000-0x0000000000537000-memory.dmp
memory/3732-21-0x0000000000400000-0x0000000000537000-memory.dmp
memory/3732-22-0x0000000000400000-0x0000000000537000-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 | 7a2fb411d906ae6341854d895b992a14 |
| SHA1 | 01184db179b8feb2c0fa6d52b5c089b300ddf3b6 |
| SHA256 | 2dbcc6b982c8a02447a4cd207f3f7cbad0d41768207745008506bbbd60cb22eb |
| SHA512 | 5bab14f5d25e721595faf663aedf07e093ad178955c5faf05fbf1833b126133b6067e6d766603c646f1d06ea8ff8ae5777aa004b0975fd67dc92b1516a977267 |
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 | c41d6cb6f3d5f8f8e14fc56a16082509 |
| SHA1 | 525fc197f9a2184a409d7b9482a2b84bb5b12559 |
| SHA256 | 07dcd6c74759bdde38c94a294da42be5ae0e6aad23a3c1d486c800c28126d0a8 |
| SHA512 | 0d67e253fff5444f7b9d72af3e3fc8a7cd8f670c4ae852c619df7b7eed775dedaee5095c09033e5c2f831a94514399481112bb366b53464285658758916199fd |
memory/3732-27-0x0000000000400000-0x0000000000537000-memory.dmp
memory/3732-28-0x0000000000400000-0x0000000000537000-memory.dmp
memory/3732-29-0x0000000000400000-0x0000000000537000-memory.dmp
memory/3732-32-0x0000000000400000-0x0000000000537000-memory.dmp
memory/3732-34-0x0000000000400000-0x0000000000537000-memory.dmp
memory/3732-35-0x0000000000400000-0x0000000000537000-memory.dmp
memory/3732-36-0x0000000000400000-0x0000000000537000-memory.dmp
memory/3732-37-0x0000000000400000-0x0000000000537000-memory.dmp