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Analysis
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max time kernel
144s -
max time network
118s -
platform
windows7_x64 -
resource
win7-20240708-en -
resource tags
arch:x64arch:x86image:win7-20240708-enlocale:en-usos:windows7-x64system -
submitted
31/12/2024, 13:52
Static task
static1
Behavioral task
behavioral1
Sample
JaffaCakes118_1fee8e2da2d002444a602391a4dc1b7b.exe
Resource
win7-20240708-en
Behavioral task
behavioral2
Sample
JaffaCakes118_1fee8e2da2d002444a602391a4dc1b7b.exe
Resource
win10v2004-20241007-en
General
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Target
JaffaCakes118_1fee8e2da2d002444a602391a4dc1b7b.exe
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Size
815KB
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MD5
1fee8e2da2d002444a602391a4dc1b7b
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SHA1
c141c05103bfd6464ae59a0f5b194b4d8eba8598
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SHA256
3f23068954a420723036b05e95eb7f3d0cfcae0c4e71ce3f09dc99203c074083
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SHA512
f48d534843b110b69bf0a45cc9b1f7fb6c037fe2eca46f838344e0a00b033f53e0783bf881f338bf15e25ea431097ae1c1a67d0831ef338b9d8743089b2b0fdb
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SSDEEP
12288:Whb8E/vK17prPrtM9zDJWP2Rl7+rxFUo26JbkoOF+1zV7iDOeJCyu8+AztGGbJNH:c4my1L592gxFU2kGhcCX9E5Il
Malware Config
Extracted
djvu
http://rlrz.org/fhsgtsspen6/get.php
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extension
.irjg
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offline_id
xcdIdDNFh62dy3iJsba1COhcfDENsbjPHQQ2Eht1
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payload_url
http://znpst.top/dl/build2.exe
http://rlrz.org/files/1/build3.exe
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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-xl2bbDnZSN 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: 0338gSd743d
Signatures
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Detected Djvu ransomware 14 IoCs
resource yara_rule behavioral1/memory/1908-2-0x0000000002F90000-0x00000000030AB000-memory.dmp family_djvu behavioral1/memory/1608-5-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/1608-8-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/1608-9-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/1608-29-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/2728-33-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/2728-46-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/2728-47-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/2728-48-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/2728-50-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/2728-52-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/2728-54-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/2728-55-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/2728-56-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu -
Djvu Ransomware
Ransomware which is a variant of the STOP family.
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Djvu family
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Modifies file permissions 1 TTPs 1 IoCs
pid Process 2592 icacls.exe -
Adds Run key to start application 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-3551809350-4263495960-1443967649-1000\Software\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\52ea3cd7-5d60-4ee6-87a5-0b4f3d8b4bba\\JaffaCakes118_1fee8e2da2d002444a602391a4dc1b7b.exe\" --AutoStart" JaffaCakes118_1fee8e2da2d002444a602391a4dc1b7b.exe -
Looks up external IP address via web service 3 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.
flow ioc 3 api.2ip.ua 4 api.2ip.ua 9 api.2ip.ua -
Suspicious use of SetThreadContext 2 IoCs
description pid Process procid_target PID 1908 set thread context of 1608 1908 JaffaCakes118_1fee8e2da2d002444a602391a4dc1b7b.exe 30 PID 2896 set thread context of 2728 2896 JaffaCakes118_1fee8e2da2d002444a602391a4dc1b7b.exe 33 -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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System Location Discovery: System Language Discovery 1 TTPs 5 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
description ioc Process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language JaffaCakes118_1fee8e2da2d002444a602391a4dc1b7b.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language JaffaCakes118_1fee8e2da2d002444a602391a4dc1b7b.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language JaffaCakes118_1fee8e2da2d002444a602391a4dc1b7b.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language JaffaCakes118_1fee8e2da2d002444a602391a4dc1b7b.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language icacls.exe -
Suspicious behavior: EnumeratesProcesses 4 IoCs
pid Process 1608 JaffaCakes118_1fee8e2da2d002444a602391a4dc1b7b.exe 1608 JaffaCakes118_1fee8e2da2d002444a602391a4dc1b7b.exe 2728 JaffaCakes118_1fee8e2da2d002444a602391a4dc1b7b.exe 2728 JaffaCakes118_1fee8e2da2d002444a602391a4dc1b7b.exe -
Suspicious use of WriteProcessMemory 30 IoCs
description pid Process procid_target PID 1908 wrote to memory of 1608 1908 JaffaCakes118_1fee8e2da2d002444a602391a4dc1b7b.exe 30 PID 1908 wrote to memory of 1608 1908 JaffaCakes118_1fee8e2da2d002444a602391a4dc1b7b.exe 30 PID 1908 wrote to memory of 1608 1908 JaffaCakes118_1fee8e2da2d002444a602391a4dc1b7b.exe 30 PID 1908 wrote to memory of 1608 1908 JaffaCakes118_1fee8e2da2d002444a602391a4dc1b7b.exe 30 PID 1908 wrote to memory of 1608 1908 JaffaCakes118_1fee8e2da2d002444a602391a4dc1b7b.exe 30 PID 1908 wrote to memory of 1608 1908 JaffaCakes118_1fee8e2da2d002444a602391a4dc1b7b.exe 30 PID 1908 wrote to memory of 1608 1908 JaffaCakes118_1fee8e2da2d002444a602391a4dc1b7b.exe 30 PID 1908 wrote to memory of 1608 1908 JaffaCakes118_1fee8e2da2d002444a602391a4dc1b7b.exe 30 PID 1908 wrote to memory of 1608 1908 JaffaCakes118_1fee8e2da2d002444a602391a4dc1b7b.exe 30 PID 1908 wrote to memory of 1608 1908 JaffaCakes118_1fee8e2da2d002444a602391a4dc1b7b.exe 30 PID 1908 wrote to memory of 1608 1908 JaffaCakes118_1fee8e2da2d002444a602391a4dc1b7b.exe 30 PID 1608 wrote to memory of 2592 1608 JaffaCakes118_1fee8e2da2d002444a602391a4dc1b7b.exe 31 PID 1608 wrote to memory of 2592 1608 JaffaCakes118_1fee8e2da2d002444a602391a4dc1b7b.exe 31 PID 1608 wrote to memory of 2592 1608 JaffaCakes118_1fee8e2da2d002444a602391a4dc1b7b.exe 31 PID 1608 wrote to memory of 2592 1608 JaffaCakes118_1fee8e2da2d002444a602391a4dc1b7b.exe 31 PID 1608 wrote to memory of 2896 1608 JaffaCakes118_1fee8e2da2d002444a602391a4dc1b7b.exe 32 PID 1608 wrote to memory of 2896 1608 JaffaCakes118_1fee8e2da2d002444a602391a4dc1b7b.exe 32 PID 1608 wrote to memory of 2896 1608 JaffaCakes118_1fee8e2da2d002444a602391a4dc1b7b.exe 32 PID 1608 wrote to memory of 2896 1608 JaffaCakes118_1fee8e2da2d002444a602391a4dc1b7b.exe 32 PID 2896 wrote to memory of 2728 2896 JaffaCakes118_1fee8e2da2d002444a602391a4dc1b7b.exe 33 PID 2896 wrote to memory of 2728 2896 JaffaCakes118_1fee8e2da2d002444a602391a4dc1b7b.exe 33 PID 2896 wrote to memory of 2728 2896 JaffaCakes118_1fee8e2da2d002444a602391a4dc1b7b.exe 33 PID 2896 wrote to memory of 2728 2896 JaffaCakes118_1fee8e2da2d002444a602391a4dc1b7b.exe 33 PID 2896 wrote to memory of 2728 2896 JaffaCakes118_1fee8e2da2d002444a602391a4dc1b7b.exe 33 PID 2896 wrote to memory of 2728 2896 JaffaCakes118_1fee8e2da2d002444a602391a4dc1b7b.exe 33 PID 2896 wrote to memory of 2728 2896 JaffaCakes118_1fee8e2da2d002444a602391a4dc1b7b.exe 33 PID 2896 wrote to memory of 2728 2896 JaffaCakes118_1fee8e2da2d002444a602391a4dc1b7b.exe 33 PID 2896 wrote to memory of 2728 2896 JaffaCakes118_1fee8e2da2d002444a602391a4dc1b7b.exe 33 PID 2896 wrote to memory of 2728 2896 JaffaCakes118_1fee8e2da2d002444a602391a4dc1b7b.exe 33 PID 2896 wrote to memory of 2728 2896 JaffaCakes118_1fee8e2da2d002444a602391a4dc1b7b.exe 33
Processes
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C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_1fee8e2da2d002444a602391a4dc1b7b.exe"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_1fee8e2da2d002444a602391a4dc1b7b.exe"1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1908 -
C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_1fee8e2da2d002444a602391a4dc1b7b.exe"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_1fee8e2da2d002444a602391a4dc1b7b.exe"2⤵
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:1608 -
C:\Windows\SysWOW64\icacls.exeicacls "C:\Users\Admin\AppData\Local\52ea3cd7-5d60-4ee6-87a5-0b4f3d8b4bba" /deny *S-1-1-0:(OI)(CI)(DE,DC)3⤵
- Modifies file permissions
- System Location Discovery: System Language Discovery
PID:2592
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C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_1fee8e2da2d002444a602391a4dc1b7b.exe"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_1fee8e2da2d002444a602391a4dc1b7b.exe" --Admin IsNotAutoStart IsNotTask3⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2896 -
C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_1fee8e2da2d002444a602391a4dc1b7b.exe"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_1fee8e2da2d002444a602391a4dc1b7b.exe" --Admin IsNotAutoStart IsNotTask4⤵
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
PID:2728
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
1KB
MD567e486b2f148a3fca863728242b6273e
SHA1452a84c183d7ea5b7c015b597e94af8eef66d44a
SHA256facaf1c3a4bf232abce19a2d534e495b0d3adc7dbe3797d336249aa6f70adcfb
SHA512d3a37da3bb10a9736dc03e8b2b49baceef5d73c026e2077b8ebc1b786f2c9b2f807e0aa13a5866cf3b3cafd2bc506242ef139c423eaffb050bbb87773e53881e
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Filesize
436B
MD5971c514f84bba0785f80aa1c23edfd79
SHA1732acea710a87530c6b08ecdf32a110d254a54c8
SHA256f157ed17fcaf8837fa82f8b69973848c9b10a02636848f995698212a08f31895
SHA51243dc1425d80e170c645a3e3bb56da8c3acd31bd637329e9e37094ac346ac85434df4edcdbefc05ae00aea33a80a88e2af695997a495611217fe6706075a63c58
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C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\8B2B9A00839EED1DFDCCC3BFC2F5DF12
Filesize174B
MD54855cb97a3e6853274821ff24a31adde
SHA1afadceb02d6b2b74d51f283f8157c4888777c1b7
SHA256b426ee84c033c981146a83f7059ab2ea78ea2a48a253c343d9229c5e8bdd1beb
SHA512921d1591c8a08c31fe58bff15187bedfa176c25dd73c6f901010a049861d56fb06f3d56f757259f58a1f4abf3212c4ef4b145063288f49675df2ae3f1fc020f4
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C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015
Filesize342B
MD52224e344a2065a67810330e3bd80f979
SHA1273964fa81414bb23065324dd3847119aca0e020
SHA256768966e56a17d49ee5dd6f031911d997b7f2831d7c3585e2d8eeb5c6f841ccc8
SHA512960c156ed8abec198776c3fdd29b18e9a75e717f4676f005ff9c0631413b9128470fc7e44d2c6fb6221c28a37af696edfc22b4612805e20dd4953ffe49d68158
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C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\B46811C17859FFB409CF0E904A4AA8F8
Filesize170B
MD59329492632ceba657760502cf5127a17
SHA1940c3f05e5a8eb8715d8940e7066847a6cf48562
SHA2561d796108eae84ad4416938f310ab42c1fa14cdc8afe84ad5259505bd8d2e0796
SHA512f4add1ca80346107499b4d4c51536e5905007a1f44be1766ef1f0fd856b3203d65f157ba513ec18d3ee5b24bbafc6d1e4e4f10b9b24207fea239e4f684825ab7
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C:\Users\Admin\AppData\Local\52ea3cd7-5d60-4ee6-87a5-0b4f3d8b4bba\JaffaCakes118_1fee8e2da2d002444a602391a4dc1b7b.exe
Filesize815KB
MD51fee8e2da2d002444a602391a4dc1b7b
SHA1c141c05103bfd6464ae59a0f5b194b4d8eba8598
SHA2563f23068954a420723036b05e95eb7f3d0cfcae0c4e71ce3f09dc99203c074083
SHA512f48d534843b110b69bf0a45cc9b1f7fb6c037fe2eca46f838344e0a00b033f53e0783bf881f338bf15e25ea431097ae1c1a67d0831ef338b9d8743089b2b0fdb
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Filesize
70KB
MD549aebf8cbd62d92ac215b2923fb1b9f5
SHA11723be06719828dda65ad804298d0431f6aff976
SHA256b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f
SHA512bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b