Analysis
-
max time kernel
141s -
max time network
126s -
platform
windows10-2004_x64 -
resource
win10v2004-20240802-en -
resource tags
arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system -
submitted
20-08-2024 11:30
Behavioral task
behavioral1
Sample
af0b8f5af76165683f16c178e20703f0_JaffaCakes118.exe
Resource
win7-20240704-en
Behavioral task
behavioral2
Sample
af0b8f5af76165683f16c178e20703f0_JaffaCakes118.exe
Resource
win10v2004-20240802-en
General
-
Target
af0b8f5af76165683f16c178e20703f0_JaffaCakes118.exe
-
Size
812KB
-
MD5
af0b8f5af76165683f16c178e20703f0
-
SHA1
9d6e0772131c0a338caa0458e59b9e66f6ee1e2c
-
SHA256
22ed8ba56c9a195d2f2b50133b9ba06e6cc0705fd3003cd76c2717547443f3d4
-
SHA512
99010c90cf3d71d1577724f3726a90d03e49595f7b32d7daf50ff076bd712d383c34639a28ab3c49c45e468ee4cbc186ba39b28806ab74c9f3705b376dcdf03a
-
SSDEEP
24576:9r33kKHXw2x9eo20ZcWB7kHkIreRbLd6:9LkKgo1Z/BIEIr2
Malware Config
Extracted
djvu
http://cjto.top/nddddhsspen6/get.php
-
extension
.copa
-
offline_id
5sHsKew2XYnEguRaSVYIA8rudOB16MVLvPgGIOt1
-
payload_url
http://cjto.top/files/penelop/updatewin1.exe
http://cjto.top/files/penelop/updatewin2.exe
http://cjto.top/files/penelop/updatewin.exe
http://cjto.top/files/penelop/3.exe
http://cjto.top/files/penelop/4.exe
http://cjto.top/files/penelop/5.exe
-
ransomnote
ATTENTION! Don't worry, you can return all your files! All your files like pictures, databases, documents and other important are encrypted with strongest encryption and unique key. The only method of recovering files is to purchase decrypt tool and unique key for you. This software will decrypt all your encrypted files. What guarantees you have? You can send one of your encrypted file from your PC and we decrypt it for free. But we can decrypt only 1 file for free. File must not contain valuable information. You can get and look video overview decrypt tool: https://we.tl/t-NYlGSMNN9r Price of private key and decrypt software is $980. Discount 50% available if you contact us first 72 hours, that's price for you is $490. Please note that you'll never restore your data without payment. Check your e-mail "Spam" or "Junk" folder if you don't get answer more than 6 hours. To get this software you need write on our e-mail: [email protected] Reserve e-mail address to contact us: [email protected] Your personal ID: 0253Ijrfg
Signatures
-
Detected Djvu ransomware 12 IoCs
Processes:
resource yara_rule behavioral2/memory/4928-3-0x00000000012C0000-0x00000000013DA000-memory.dmp family_djvu behavioral2/memory/4928-4-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/4928-18-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/4928-17-0x00000000012C0000-0x00000000013DA000-memory.dmp family_djvu behavioral2/memory/4928-16-0x0000000000400000-0x0000000000CCB000-memory.dmp family_djvu behavioral2/memory/2160-21-0x0000000000400000-0x0000000000CCB000-memory.dmp family_djvu behavioral2/memory/2160-28-0x0000000000400000-0x0000000000CCB000-memory.dmp family_djvu behavioral2/memory/2160-32-0x0000000000400000-0x0000000000CCB000-memory.dmp family_djvu behavioral2/memory/2160-33-0x0000000000400000-0x0000000000CCB000-memory.dmp family_djvu behavioral2/memory/872-46-0x0000000000400000-0x0000000000CCB000-memory.dmp family_djvu behavioral2/memory/872-49-0x0000000000400000-0x0000000000CCB000-memory.dmp family_djvu behavioral2/memory/2160-412-0x0000000000400000-0x0000000000CCB000-memory.dmp family_djvu -
Djvu Ransomware
Ransomware which is a variant of the STOP family.
-
Renames multiple (180) files with added filename extension
This suggests ransomware activity of encrypting all the files on the system.
-
Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
Processes:
af0b8f5af76165683f16c178e20703f0_JaffaCakes118.exedescription ioc process Key value queried \REGISTRY\USER\S-1-5-21-2412658365-3084825385-3340777666-1000\Control Panel\International\Geo\Nation af0b8f5af76165683f16c178e20703f0_JaffaCakes118.exe -
Executes dropped EXE 1 IoCs
Processes:
af0b8f5af76165683f16c178e20703f0_JaffaCakes118.exepid process 872 af0b8f5af76165683f16c178e20703f0_JaffaCakes118.exe -
Modifies file permissions 1 TTPs 1 IoCs
-
Processes:
resource yara_rule behavioral2/memory/4928-0-0x0000000000400000-0x0000000000CCB000-memory.dmp upx C:\Users\Admin\AppData\Local\b402d343-a5d2-4929-a5ae-a92a6778fdf2\af0b8f5af76165683f16c178e20703f0_JaffaCakes118.exe upx behavioral2/memory/2160-20-0x0000000000400000-0x0000000000CCB000-memory.dmp upx -
Adds Run key to start application 2 TTPs 1 IoCs
Processes:
af0b8f5af76165683f16c178e20703f0_JaffaCakes118.exedescription ioc process Set value (str) \REGISTRY\USER\S-1-5-21-2412658365-3084825385-3340777666-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\b402d343-a5d2-4929-a5ae-a92a6778fdf2\\af0b8f5af76165683f16c178e20703f0_JaffaCakes118.exe\" --AutoStart" af0b8f5af76165683f16c178e20703f0_JaffaCakes118.exe -
Looks up external IP address via web service 4 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.
Processes:
flow ioc 28 api.2ip.ua 76 api.2ip.ua 19 api.2ip.ua 20 api.2ip.ua -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
-
Program crash 3 IoCs
Processes:
WerFault.exeWerFault.exeWerFault.exepid pid_target process target process 452 4928 WerFault.exe af0b8f5af76165683f16c178e20703f0_JaffaCakes118.exe 4988 872 WerFault.exe af0b8f5af76165683f16c178e20703f0_JaffaCakes118.exe 1756 2160 WerFault.exe af0b8f5af76165683f16c178e20703f0_JaffaCakes118.exe -
System Location Discovery: System Language Discovery 1 TTPs 4 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
Processes:
af0b8f5af76165683f16c178e20703f0_JaffaCakes118.exeicacls.exeaf0b8f5af76165683f16c178e20703f0_JaffaCakes118.exeaf0b8f5af76165683f16c178e20703f0_JaffaCakes118.exedescription ioc process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language af0b8f5af76165683f16c178e20703f0_JaffaCakes118.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language icacls.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language af0b8f5af76165683f16c178e20703f0_JaffaCakes118.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language af0b8f5af76165683f16c178e20703f0_JaffaCakes118.exe -
Suspicious behavior: EnumeratesProcesses 8 IoCs
Processes:
af0b8f5af76165683f16c178e20703f0_JaffaCakes118.exeaf0b8f5af76165683f16c178e20703f0_JaffaCakes118.exeaf0b8f5af76165683f16c178e20703f0_JaffaCakes118.exepid process 4928 af0b8f5af76165683f16c178e20703f0_JaffaCakes118.exe 4928 af0b8f5af76165683f16c178e20703f0_JaffaCakes118.exe 2160 af0b8f5af76165683f16c178e20703f0_JaffaCakes118.exe 2160 af0b8f5af76165683f16c178e20703f0_JaffaCakes118.exe 872 af0b8f5af76165683f16c178e20703f0_JaffaCakes118.exe 872 af0b8f5af76165683f16c178e20703f0_JaffaCakes118.exe 2160 af0b8f5af76165683f16c178e20703f0_JaffaCakes118.exe 2160 af0b8f5af76165683f16c178e20703f0_JaffaCakes118.exe -
Suspicious use of WriteProcessMemory 6 IoCs
Processes:
af0b8f5af76165683f16c178e20703f0_JaffaCakes118.exedescription pid process target process PID 4928 wrote to memory of 5044 4928 af0b8f5af76165683f16c178e20703f0_JaffaCakes118.exe icacls.exe PID 4928 wrote to memory of 5044 4928 af0b8f5af76165683f16c178e20703f0_JaffaCakes118.exe icacls.exe PID 4928 wrote to memory of 5044 4928 af0b8f5af76165683f16c178e20703f0_JaffaCakes118.exe icacls.exe PID 4928 wrote to memory of 2160 4928 af0b8f5af76165683f16c178e20703f0_JaffaCakes118.exe af0b8f5af76165683f16c178e20703f0_JaffaCakes118.exe PID 4928 wrote to memory of 2160 4928 af0b8f5af76165683f16c178e20703f0_JaffaCakes118.exe af0b8f5af76165683f16c178e20703f0_JaffaCakes118.exe PID 4928 wrote to memory of 2160 4928 af0b8f5af76165683f16c178e20703f0_JaffaCakes118.exe af0b8f5af76165683f16c178e20703f0_JaffaCakes118.exe
Processes
-
C:\Users\Admin\AppData\Local\Temp\af0b8f5af76165683f16c178e20703f0_JaffaCakes118.exe"C:\Users\Admin\AppData\Local\Temp\af0b8f5af76165683f16c178e20703f0_JaffaCakes118.exe"1⤵
- Checks computer location settings
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:4928 -
C:\Windows\SysWOW64\icacls.exeicacls "C:\Users\Admin\AppData\Local\b402d343-a5d2-4929-a5ae-a92a6778fdf2" /deny *S-1-1-0:(OI)(CI)(DE,DC)2⤵
- Modifies file permissions
- System Location Discovery: System Language Discovery
PID:5044 -
C:\Users\Admin\AppData\Local\Temp\af0b8f5af76165683f16c178e20703f0_JaffaCakes118.exe"C:\Users\Admin\AppData\Local\Temp\af0b8f5af76165683f16c178e20703f0_JaffaCakes118.exe" --Admin IsNotAutoStart IsNotTask2⤵
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
PID:2160 -
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 2160 -s 16963⤵
- Program crash
PID:1756 -
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 4928 -s 17762⤵
- Program crash
PID:452
-
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 4928 -ip 49281⤵PID:1472
-
C:\Users\Admin\AppData\Local\b402d343-a5d2-4929-a5ae-a92a6778fdf2\af0b8f5af76165683f16c178e20703f0_JaffaCakes118.exeC:\Users\Admin\AppData\Local\b402d343-a5d2-4929-a5ae-a92a6778fdf2\af0b8f5af76165683f16c178e20703f0_JaffaCakes118.exe --Task1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
PID:872 -
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 872 -s 10922⤵
- Program crash
PID:4988
-
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 360 -p 872 -ip 8721⤵PID:3776
-
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 488 -p 2160 -ip 21601⤵PID:4796
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
-
Filesize
1KB
MD57fb5fa1534dcf77f2125b2403b30a0ee
SHA1365d96812a69ac0a4611ea4b70a3f306576cc3ea
SHA25633a39e9ec2133230533a686ec43760026e014a3828c703707acbc150fe40fd6f
SHA512a9279fd60505a1bfeef6fb07834cad0fd5be02fd405573fc1a5f59b991e9f88f5e81c32fe910f69bdc6585e71f02559895149eaf49c25b8ff955459fd60c0d2e
-
Filesize
436B
MD5971c514f84bba0785f80aa1c23edfd79
SHA1732acea710a87530c6b08ecdf32a110d254a54c8
SHA256f157ed17fcaf8837fa82f8b69973848c9b10a02636848f995698212a08f31895
SHA51243dc1425d80e170c645a3e3bb56da8c3acd31bd637329e9e37094ac346ac85434df4edcdbefc05ae00aea33a80a88e2af695997a495611217fe6706075a63c58
-
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\8B2B9A00839EED1DFDCCC3BFC2F5DF12
Filesize174B
MD5bf0cff7d9f699b55c41f996cf9eaaf76
SHA156d6b3e38b6825262a1010b1f74940babd37068e
SHA256d53028af6c6bcd4ed488b81db2312c845a39495bf68997b575f8d4ce909ec6bc
SHA512fe5a5b70f502bc1e2692ed6e2961af42e5f0ef5fcebf405337cd1a86041013db5608e370e2bebecf876b0152918db1735ebb50676fb0ae8eb145c46638d582d2
-
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\B46811C17859FFB409CF0E904A4AA8F8
Filesize170B
MD5e50b4ab669264447fa2ef8e138cc724b
SHA16f285bd602f3b704712119852b581658e38962df
SHA2563c7be33eb9f7e2dbc3e5bb48b50a39b2a153a0688833a1c4affb49ddc26407a9
SHA512a2cd1fc55317bbda3b0b55505afe5da8f5a918c9de4c4ff98c6e6b0181d30f3efd25b0cd0e77145a1fef15dcaa383b083e16be022f50412a71dfec4b13debe44
-
C:\Users\Admin\AppData\Local\b402d343-a5d2-4929-a5ae-a92a6778fdf2\af0b8f5af76165683f16c178e20703f0_JaffaCakes118.exe
Filesize812KB
MD5af0b8f5af76165683f16c178e20703f0
SHA19d6e0772131c0a338caa0458e59b9e66f6ee1e2c
SHA25622ed8ba56c9a195d2f2b50133b9ba06e6cc0705fd3003cd76c2717547443f3d4
SHA51299010c90cf3d71d1577724f3726a90d03e49595f7b32d7daf50ff076bd712d383c34639a28ab3c49c45e468ee4cbc186ba39b28806ab74c9f3705b376dcdf03a