Analysis Overview
SHA256
a4520e17b63c5503219d9c36435b26054ac63e4539883c5244b3129535d82879
Threat Level: Known bad
The file e950889fc7f88cbc4408d934e2e220f6_JaffaCakes118 was found to be: Known bad.
Malicious Activity Summary
Detected Djvu ransomware
Djvu Ransomware
Modifies file permissions
Checks computer location settings
Looks up external IP address via web service
Adds Run key to start application
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
2024-04-09 05:21
Signatures
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2024-04-09 05:21
Reported
2024-04-09 05:23
Platform
win7-20240221-en
Max time kernel
148s
Max time network
119s
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-1-5-21-3452737119-3959686427-228443150-1000\Software\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\53b29552-40bb-424c-b5c6-c1f6011e9abf\\e950889fc7f88cbc4408d934e2e220f6_JaffaCakes118.exe\" --AutoStart" | C:\Users\Admin\AppData\Local\Temp\e950889fc7f88cbc4408d934e2e220f6_JaffaCakes118.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 2084 set thread context of 1780 | N/A | C:\Users\Admin\AppData\Local\Temp\e950889fc7f88cbc4408d934e2e220f6_JaffaCakes118.exe | C:\Users\Admin\AppData\Local\Temp\e950889fc7f88cbc4408d934e2e220f6_JaffaCakes118.exe |
| PID 2628 set thread context of 2428 | N/A | C:\Users\Admin\AppData\Local\Temp\e950889fc7f88cbc4408d934e2e220f6_JaffaCakes118.exe | C:\Users\Admin\AppData\Local\Temp\e950889fc7f88cbc4408d934e2e220f6_JaffaCakes118.exe |
Enumerates physical storage devices
Suspicious behavior: EnumeratesProcesses
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\e950889fc7f88cbc4408d934e2e220f6_JaffaCakes118.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\e950889fc7f88cbc4408d934e2e220f6_JaffaCakes118.exe | N/A |
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\e950889fc7f88cbc4408d934e2e220f6_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\e950889fc7f88cbc4408d934e2e220f6_JaffaCakes118.exe"
C:\Users\Admin\AppData\Local\Temp\e950889fc7f88cbc4408d934e2e220f6_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\e950889fc7f88cbc4408d934e2e220f6_JaffaCakes118.exe"
C:\Windows\SysWOW64\icacls.exe
icacls "C:\Users\Admin\AppData\Local\53b29552-40bb-424c-b5c6-c1f6011e9abf" /deny *S-1-1-0:(OI)(CI)(DE,DC)
C:\Users\Admin\AppData\Local\Temp\e950889fc7f88cbc4408d934e2e220f6_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\e950889fc7f88cbc4408d934e2e220f6_JaffaCakes118.exe" --Admin IsNotAutoStart IsNotTask
C:\Users\Admin\AppData\Local\Temp\e950889fc7f88cbc4408d934e2e220f6_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\e950889fc7f88cbc4408d934e2e220f6_JaffaCakes118.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 | securebiz.org | udp |
| US | 8.8.8.8:53 | astdg.top | udp |
Files
memory/2084-0-0x0000000000230000-0x00000000002C1000-memory.dmp
memory/1780-2-0x000000007EFDE000-0x000000007EFDF000-memory.dmp
memory/2084-4-0x0000000002D00000-0x0000000002E1B000-memory.dmp
memory/1780-5-0x0000000000400000-0x0000000000537000-memory.dmp
memory/2084-1-0x0000000000230000-0x00000000002C1000-memory.dmp
memory/1780-7-0x0000000000400000-0x0000000000537000-memory.dmp
memory/1780-8-0x0000000000400000-0x0000000000537000-memory.dmp
C:\Users\Admin\AppData\Local\53b29552-40bb-424c-b5c6-c1f6011e9abf\e950889fc7f88cbc4408d934e2e220f6_JaffaCakes118.exe
| MD5 | e950889fc7f88cbc4408d934e2e220f6 |
| SHA1 | cefca2c4538365655cb1eead3f3390313b9ea18a |
| SHA256 | a4520e17b63c5503219d9c36435b26054ac63e4539883c5244b3129535d82879 |
| SHA512 | 82b07bab3625f0f6abd85f477ebcd6df334ac1f7e9a186dea82e9101c14b4990ad461aa552df27ba3b121b799c2f164335524b1309f7bb96ef1eead5675ad7bb |
memory/2628-27-0x00000000002E0000-0x0000000000371000-memory.dmp
memory/1780-26-0x0000000000400000-0x0000000000537000-memory.dmp
memory/2628-29-0x00000000002E0000-0x0000000000371000-memory.dmp
memory/2428-34-0x0000000000400000-0x0000000000537000-memory.dmp
memory/2428-35-0x0000000000400000-0x0000000000537000-memory.dmp
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015
| MD5 | 2eb6b2da09454ea922752130773add02 |
| SHA1 | daf11cda2fc5e53c04beed64adec1c83fb21c242 |
| SHA256 | 6a6cc07d0c1b46a9d1c971a032006eebcc854b67e440fbb41d0d6c1d93dff406 |
| SHA512 | 758cd992fd44973d6b13ab085cf3723f03ad3cc18e552379b81800a4c9fc81e843240f1216e6a5d044fe8e08ecae27ba895e54386586f3064bbc2ae555449d18 |
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 | a40e6081ebb759cf5d244fa769fd0d1e |
| SHA1 | ee1cd5aa0506ef5b0a646e375f04d23447f234c6 |
| SHA256 | 11fe606a81d7fcb159266f6b0871803db54b2451d6030afbfc68b0b2d00f94f1 |
| SHA512 | a95dfc4efbc7b3cdd7c8bad13598319ea1c283c448f419ef6730fd231dfb9c80236ad0854adb9d8685427aa34072f7c16a5376b4da3f4f567291cacec4d56aeb |
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\24BD96D5497F70B3F510A6B53CD43F3E_3A89246FB90C5EE6620004F1AE0EB0EA
| MD5 | 580071ebd24cccfd9268e1474bb8134e |
| SHA1 | 443665efe7009fe1d4c5bc4786dc9cc540e59ef6 |
| SHA256 | 53e3fd53196b53d23b724612cf2704518edf3e979dca02f5674ac419b5f7b461 |
| SHA512 | 13d52455d8a30a0af06c420cd01f13f55efc4c55b59883c5208bf4929352e7b783557bff6a157c4fc71a8e7cbfadf00d55eef8ebef4b984624d8feb116a960a4 |
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\24BD96D5497F70B3F510A6B53CD43F3E_3A89246FB90C5EE6620004F1AE0EB0EA
| MD5 | dee0d584312b1218b8c25a1025e361c7 |
| SHA1 | 7d66aa421782438a997e6b3781c96869f692df14 |
| SHA256 | 613972f1636eecce1563f567a29b049735b496eb82d44566e40f89df64901d9f |
| SHA512 | 9ed20ac5fa9ce8e6e46edc641e0103cd96c42df8156238102b0b2874d221c7e1c71d4e7bdc47ddabb687d211c3d9c0ebc8a83592caa1a4935d05f8f430d5b121 |
C:\Users\Admin\AppData\Local\Temp\Cab225F.tmp
| MD5 | ac05d27423a85adc1622c714f2cb6184 |
| SHA1 | b0fe2b1abddb97837ea0195be70ab2ff14d43198 |
| SHA256 | c6456e12e5e53287a547af4103e0397cb9697e466cf75844312dc296d43d144d |
| SHA512 | 6d0ef9050e41fbae680e0e59dd0f90b6ac7fea5579ef5708b69d5da33a0ece7e8b16574b58b17b64a34cc34a4ffc22b4a62c1ece61f36c4a11a0665e0536b90d |
memory/2428-49-0x0000000000400000-0x0000000000537000-memory.dmp
memory/2428-48-0x0000000000400000-0x0000000000537000-memory.dmp
memory/2428-50-0x0000000000400000-0x0000000000537000-memory.dmp
memory/2428-53-0x0000000000400000-0x0000000000537000-memory.dmp
memory/2428-56-0x0000000000400000-0x0000000000537000-memory.dmp
memory/2428-55-0x0000000000400000-0x0000000000537000-memory.dmp
memory/2428-57-0x0000000000400000-0x0000000000537000-memory.dmp
memory/2428-58-0x0000000000400000-0x0000000000537000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2024-04-09 05:21
Reported
2024-04-09 05:23
Platform
win10v2004-20240226-en
Max time kernel
145s
Max time network
125s
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-1-5-21-566096764-1992588923-1249862864-1000\Control Panel\International\Geo\Nation | C:\Users\Admin\AppData\Local\Temp\e950889fc7f88cbc4408d934e2e220f6_JaffaCakes118.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-1-5-21-566096764-1992588923-1249862864-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\83424aee-9955-4559-b024-016c853d1f90\\e950889fc7f88cbc4408d934e2e220f6_JaffaCakes118.exe\" --AutoStart" | C:\Users\Admin\AppData\Local\Temp\e950889fc7f88cbc4408d934e2e220f6_JaffaCakes118.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 3864 set thread context of 5020 | N/A | C:\Users\Admin\AppData\Local\Temp\e950889fc7f88cbc4408d934e2e220f6_JaffaCakes118.exe | C:\Users\Admin\AppData\Local\Temp\e950889fc7f88cbc4408d934e2e220f6_JaffaCakes118.exe |
| PID 1188 set thread context of 3968 | N/A | C:\Users\Admin\AppData\Local\Temp\e950889fc7f88cbc4408d934e2e220f6_JaffaCakes118.exe | C:\Users\Admin\AppData\Local\Temp\e950889fc7f88cbc4408d934e2e220f6_JaffaCakes118.exe |
Enumerates physical storage devices
Suspicious behavior: EnumeratesProcesses
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\e950889fc7f88cbc4408d934e2e220f6_JaffaCakes118.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\e950889fc7f88cbc4408d934e2e220f6_JaffaCakes118.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\e950889fc7f88cbc4408d934e2e220f6_JaffaCakes118.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\e950889fc7f88cbc4408d934e2e220f6_JaffaCakes118.exe | N/A |
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\e950889fc7f88cbc4408d934e2e220f6_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\e950889fc7f88cbc4408d934e2e220f6_JaffaCakes118.exe"
C:\Users\Admin\AppData\Local\Temp\e950889fc7f88cbc4408d934e2e220f6_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\e950889fc7f88cbc4408d934e2e220f6_JaffaCakes118.exe"
C:\Windows\SysWOW64\icacls.exe
icacls "C:\Users\Admin\AppData\Local\83424aee-9955-4559-b024-016c853d1f90" /deny *S-1-1-0:(OI)(CI)(DE,DC)
C:\Users\Admin\AppData\Local\Temp\e950889fc7f88cbc4408d934e2e220f6_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\e950889fc7f88cbc4408d934e2e220f6_JaffaCakes118.exe" --Admin IsNotAutoStart IsNotTask
C:\Users\Admin\AppData\Local\Temp\e950889fc7f88cbc4408d934e2e220f6_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\e950889fc7f88cbc4408d934e2e220f6_JaffaCakes118.exe" --Admin IsNotAutoStart IsNotTask
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | 58.55.71.13.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 138.136.73.23.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 | 23.159.190.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 3.180.250.142.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 79.121.231.20.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 |
| US | 8.8.8.8:53 | securebiz.org | udp |
| US | 8.8.8.8:53 | astdg.top | udp |
| US | 8.8.8.8:53 | astdg.top | udp |
| US | 8.8.8.8:53 | 97.17.167.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | astdg.top | udp |
| US | 8.8.8.8:53 | astdg.top | udp |
| US | 8.8.8.8:53 | 103.169.127.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 15.164.165.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 172.210.232.199.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 82.90.14.23.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 22.236.111.52.in-addr.arpa | udp |
Files
memory/3864-1-0x0000000003300000-0x0000000003399000-memory.dmp
memory/3864-2-0x00000000033A0000-0x00000000034BB000-memory.dmp
memory/5020-3-0x0000000000400000-0x0000000000537000-memory.dmp
memory/5020-4-0x0000000000400000-0x0000000000537000-memory.dmp
memory/5020-5-0x0000000000400000-0x0000000000537000-memory.dmp
memory/5020-6-0x0000000000400000-0x0000000000537000-memory.dmp
C:\Users\Admin\AppData\Local\83424aee-9955-4559-b024-016c853d1f90\e950889fc7f88cbc4408d934e2e220f6_JaffaCakes118.exe
| MD5 | e950889fc7f88cbc4408d934e2e220f6 |
| SHA1 | cefca2c4538365655cb1eead3f3390313b9ea18a |
| SHA256 | a4520e17b63c5503219d9c36435b26054ac63e4539883c5244b3129535d82879 |
| SHA512 | 82b07bab3625f0f6abd85f477ebcd6df334ac1f7e9a186dea82e9101c14b4990ad461aa552df27ba3b121b799c2f164335524b1309f7bb96ef1eead5675ad7bb |
memory/5020-15-0x0000000000400000-0x0000000000537000-memory.dmp
memory/1188-19-0x0000000002FE0000-0x0000000003073000-memory.dmp
memory/3968-20-0x0000000000400000-0x0000000000537000-memory.dmp
memory/3968-21-0x0000000000400000-0x0000000000537000-memory.dmp
memory/3968-22-0x0000000000400000-0x0000000000537000-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 | 0cb61ca512884acf25d2ebbda01513ce |
| SHA1 | 41ebe16290aaa63ab7cf9b7f90b8f828524bd9c6 |
| SHA256 | bae7842eb139a77a8a8fe83438c2935f9debaed3bc8db5e25e8fd4e32a0606f8 |
| SHA512 | ae5fe9dbb980bb6d824d1edeb08da551d63cd7314cb7b6b2937f5b934962865baf52038d6902dbe00a551a6e44eb57136a047c77f6cc63ee6b5453ed6d782c5d |
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\24BD96D5497F70B3F510A6B53CD43F3E_3A89246FB90C5EE6620004F1AE0EB0EA
| MD5 | 580071ebd24cccfd9268e1474bb8134e |
| SHA1 | 443665efe7009fe1d4c5bc4786dc9cc540e59ef6 |
| SHA256 | 53e3fd53196b53d23b724612cf2704518edf3e979dca02f5674ac419b5f7b461 |
| SHA512 | 13d52455d8a30a0af06c420cd01f13f55efc4c55b59883c5208bf4929352e7b783557bff6a157c4fc71a8e7cbfadf00d55eef8ebef4b984624d8feb116a960a4 |
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\24BD96D5497F70B3F510A6B53CD43F3E_3A89246FB90C5EE6620004F1AE0EB0EA
| MD5 | 02fc04a05f0ab5b286ca315ccd1d0afc |
| SHA1 | 8922bf13880c9ae26a18fec2585fb90baaefa97c |
| SHA256 | 80ccbc092f36b25cd6140e6aac7716db1bb0ad0f95d7d3eddf9c0d808360c760 |
| SHA512 | 91bd335b6845756586b0f7c630d5ead7fe3a4ce9c8581b1541436c4399ac00c52a80ed471c7d04207ebafab62b99668724c0fc60a552f223f3309edddcfffa21 |
memory/3968-27-0x0000000000400000-0x0000000000537000-memory.dmp
memory/3968-28-0x0000000000400000-0x0000000000537000-memory.dmp
memory/3968-29-0x0000000000400000-0x0000000000537000-memory.dmp
memory/3968-31-0x0000000000400000-0x0000000000537000-memory.dmp
memory/3968-33-0x0000000000400000-0x0000000000537000-memory.dmp
memory/3968-34-0x0000000000400000-0x0000000000537000-memory.dmp
memory/3968-35-0x0000000000400000-0x0000000000537000-memory.dmp
memory/3968-37-0x0000000000400000-0x0000000000537000-memory.dmp