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Analysis
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max time kernel
145s -
max time network
146s -
platform
windows10-2004_x64 -
resource
win10v2004-20241007-en -
resource tags
arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system -
submitted
22/12/2024, 10:04
Static task
static1
Behavioral task
behavioral1
Sample
JaffaCakes118_bb4ef0f38dc73163c5284ea31437abdf17130321883d04cfd04c041efc922af9.exe
Resource
win7-20240903-en
Behavioral task
behavioral2
Sample
JaffaCakes118_bb4ef0f38dc73163c5284ea31437abdf17130321883d04cfd04c041efc922af9.exe
Resource
win10v2004-20241007-en
General
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Target
JaffaCakes118_bb4ef0f38dc73163c5284ea31437abdf17130321883d04cfd04c041efc922af9.exe
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Size
838KB
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MD5
361d9b1bee71debf8d966051c0369a9a
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SHA1
757949978d35abf2d24b77a4497e19a02a999307
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SHA256
bb4ef0f38dc73163c5284ea31437abdf17130321883d04cfd04c041efc922af9
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SHA512
2c859936590be2be37e3460378d8d832dec16add1ce87bb70c9cdf84e080fc0bde1c4444121890a32346ed56384060171e06aa208c27d0a7027aa017af23ef83
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SSDEEP
12288:Y/IZf5Of+cXoWFfvSn8tcJtkW5lvL1QjSLAPv8SzZtZaAkmEjPR5y7j:Y/0ROfQ0tGsW5hL64u8SzHiHLR5q
Malware Config
Extracted
djvu
http://fuyt.org/test1/get.php
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extension
.tuid
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offline_id
LgcOIftV0dQfFBQStVNfb8BhHy8tHRPvXwSiFwt1
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payload_url
http://zerit.top/dl/build2.exe
http://fuyt.org/files/1/build3.exe
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ransomnote
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Signatures
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Detected Djvu ransomware 18 IoCs
resource yara_rule behavioral2/memory/5088-2-0x0000000002200000-0x000000000231B000-memory.dmp family_djvu behavioral2/memory/2036-4-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/2036-3-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/2036-5-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/2036-6-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/2036-17-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/2944-22-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/2944-24-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/2944-21-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/2944-29-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/2944-30-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/2944-31-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/2944-35-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/2944-44-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/2944-46-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/2944-47-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/2944-48-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/2944-49-0x0000000000400000-0x0000000000537000-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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Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
description ioc Process Key value queried \REGISTRY\USER\S-1-5-21-2437139445-1151884604-3026847218-1000\Control Panel\International\Geo\Nation JaffaCakes118_bb4ef0f38dc73163c5284ea31437abdf17130321883d04cfd04c041efc922af9.exe -
Modifies file permissions 1 TTPs 1 IoCs
pid Process 116 icacls.exe -
Adds Run key to start application 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-2437139445-1151884604-3026847218-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\40c00c89-66e9-41f7-b57d-56bfd481b5f0\\JaffaCakes118_bb4ef0f38dc73163c5284ea31437abdf17130321883d04cfd04c041efc922af9.exe\" --AutoStart" JaffaCakes118_bb4ef0f38dc73163c5284ea31437abdf17130321883d04cfd04c041efc922af9.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 12 api.2ip.ua 13 api.2ip.ua 21 api.2ip.ua -
Suspicious use of SetThreadContext 2 IoCs
description pid Process procid_target PID 5088 set thread context of 2036 5088 JaffaCakes118_bb4ef0f38dc73163c5284ea31437abdf17130321883d04cfd04c041efc922af9.exe 83 PID 2144 set thread context of 2944 2144 JaffaCakes118_bb4ef0f38dc73163c5284ea31437abdf17130321883d04cfd04c041efc922af9.exe 88 -
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_bb4ef0f38dc73163c5284ea31437abdf17130321883d04cfd04c041efc922af9.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language JaffaCakes118_bb4ef0f38dc73163c5284ea31437abdf17130321883d04cfd04c041efc922af9.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language JaffaCakes118_bb4ef0f38dc73163c5284ea31437abdf17130321883d04cfd04c041efc922af9.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language JaffaCakes118_bb4ef0f38dc73163c5284ea31437abdf17130321883d04cfd04c041efc922af9.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language icacls.exe -
Suspicious behavior: EnumeratesProcesses 4 IoCs
pid Process 2036 JaffaCakes118_bb4ef0f38dc73163c5284ea31437abdf17130321883d04cfd04c041efc922af9.exe 2036 JaffaCakes118_bb4ef0f38dc73163c5284ea31437abdf17130321883d04cfd04c041efc922af9.exe 2944 JaffaCakes118_bb4ef0f38dc73163c5284ea31437abdf17130321883d04cfd04c041efc922af9.exe 2944 JaffaCakes118_bb4ef0f38dc73163c5284ea31437abdf17130321883d04cfd04c041efc922af9.exe -
Suspicious use of WriteProcessMemory 26 IoCs
description pid Process procid_target PID 5088 wrote to memory of 2036 5088 JaffaCakes118_bb4ef0f38dc73163c5284ea31437abdf17130321883d04cfd04c041efc922af9.exe 83 PID 5088 wrote to memory of 2036 5088 JaffaCakes118_bb4ef0f38dc73163c5284ea31437abdf17130321883d04cfd04c041efc922af9.exe 83 PID 5088 wrote to memory of 2036 5088 JaffaCakes118_bb4ef0f38dc73163c5284ea31437abdf17130321883d04cfd04c041efc922af9.exe 83 PID 5088 wrote to memory of 2036 5088 JaffaCakes118_bb4ef0f38dc73163c5284ea31437abdf17130321883d04cfd04c041efc922af9.exe 83 PID 5088 wrote to memory of 2036 5088 JaffaCakes118_bb4ef0f38dc73163c5284ea31437abdf17130321883d04cfd04c041efc922af9.exe 83 PID 5088 wrote to memory of 2036 5088 JaffaCakes118_bb4ef0f38dc73163c5284ea31437abdf17130321883d04cfd04c041efc922af9.exe 83 PID 5088 wrote to memory of 2036 5088 JaffaCakes118_bb4ef0f38dc73163c5284ea31437abdf17130321883d04cfd04c041efc922af9.exe 83 PID 5088 wrote to memory of 2036 5088 JaffaCakes118_bb4ef0f38dc73163c5284ea31437abdf17130321883d04cfd04c041efc922af9.exe 83 PID 5088 wrote to memory of 2036 5088 JaffaCakes118_bb4ef0f38dc73163c5284ea31437abdf17130321883d04cfd04c041efc922af9.exe 83 PID 5088 wrote to memory of 2036 5088 JaffaCakes118_bb4ef0f38dc73163c5284ea31437abdf17130321883d04cfd04c041efc922af9.exe 83 PID 2036 wrote to memory of 116 2036 JaffaCakes118_bb4ef0f38dc73163c5284ea31437abdf17130321883d04cfd04c041efc922af9.exe 84 PID 2036 wrote to memory of 116 2036 JaffaCakes118_bb4ef0f38dc73163c5284ea31437abdf17130321883d04cfd04c041efc922af9.exe 84 PID 2036 wrote to memory of 116 2036 JaffaCakes118_bb4ef0f38dc73163c5284ea31437abdf17130321883d04cfd04c041efc922af9.exe 84 PID 2036 wrote to memory of 2144 2036 JaffaCakes118_bb4ef0f38dc73163c5284ea31437abdf17130321883d04cfd04c041efc922af9.exe 85 PID 2036 wrote to memory of 2144 2036 JaffaCakes118_bb4ef0f38dc73163c5284ea31437abdf17130321883d04cfd04c041efc922af9.exe 85 PID 2036 wrote to memory of 2144 2036 JaffaCakes118_bb4ef0f38dc73163c5284ea31437abdf17130321883d04cfd04c041efc922af9.exe 85 PID 2144 wrote to memory of 2944 2144 JaffaCakes118_bb4ef0f38dc73163c5284ea31437abdf17130321883d04cfd04c041efc922af9.exe 88 PID 2144 wrote to memory of 2944 2144 JaffaCakes118_bb4ef0f38dc73163c5284ea31437abdf17130321883d04cfd04c041efc922af9.exe 88 PID 2144 wrote to memory of 2944 2144 JaffaCakes118_bb4ef0f38dc73163c5284ea31437abdf17130321883d04cfd04c041efc922af9.exe 88 PID 2144 wrote to memory of 2944 2144 JaffaCakes118_bb4ef0f38dc73163c5284ea31437abdf17130321883d04cfd04c041efc922af9.exe 88 PID 2144 wrote to memory of 2944 2144 JaffaCakes118_bb4ef0f38dc73163c5284ea31437abdf17130321883d04cfd04c041efc922af9.exe 88 PID 2144 wrote to memory of 2944 2144 JaffaCakes118_bb4ef0f38dc73163c5284ea31437abdf17130321883d04cfd04c041efc922af9.exe 88 PID 2144 wrote to memory of 2944 2144 JaffaCakes118_bb4ef0f38dc73163c5284ea31437abdf17130321883d04cfd04c041efc922af9.exe 88 PID 2144 wrote to memory of 2944 2144 JaffaCakes118_bb4ef0f38dc73163c5284ea31437abdf17130321883d04cfd04c041efc922af9.exe 88 PID 2144 wrote to memory of 2944 2144 JaffaCakes118_bb4ef0f38dc73163c5284ea31437abdf17130321883d04cfd04c041efc922af9.exe 88 PID 2144 wrote to memory of 2944 2144 JaffaCakes118_bb4ef0f38dc73163c5284ea31437abdf17130321883d04cfd04c041efc922af9.exe 88
Processes
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C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_bb4ef0f38dc73163c5284ea31437abdf17130321883d04cfd04c041efc922af9.exe"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_bb4ef0f38dc73163c5284ea31437abdf17130321883d04cfd04c041efc922af9.exe"1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:5088 -
C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_bb4ef0f38dc73163c5284ea31437abdf17130321883d04cfd04c041efc922af9.exe"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_bb4ef0f38dc73163c5284ea31437abdf17130321883d04cfd04c041efc922af9.exe"2⤵
- Checks computer location settings
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:2036 -
C:\Windows\SysWOW64\icacls.exeicacls "C:\Users\Admin\AppData\Local\40c00c89-66e9-41f7-b57d-56bfd481b5f0" /deny *S-1-1-0:(OI)(CI)(DE,DC)3⤵
- Modifies file permissions
- System Location Discovery: System Language Discovery
PID:116
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C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_bb4ef0f38dc73163c5284ea31437abdf17130321883d04cfd04c041efc922af9.exe"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_bb4ef0f38dc73163c5284ea31437abdf17130321883d04cfd04c041efc922af9.exe" --Admin IsNotAutoStart IsNotTask3⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2144 -
C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_bb4ef0f38dc73163c5284ea31437abdf17130321883d04cfd04c041efc922af9.exe"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_bb4ef0f38dc73163c5284ea31437abdf17130321883d04cfd04c041efc922af9.exe" --Admin IsNotAutoStart IsNotTask4⤵
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
PID:2944
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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
MD5cc36580cfc6efce67782656ca4d9d400
SHA14d8d3b44edbc1d4d70b4e8330f2338002d43cf11
SHA256afa262312eb6443352b67a7cd9b856ff83a2fbfb56149cfd32a9b0f4e433a5d2
SHA512c0d694b5b280418c17ce500aaf6037104a84bfe5a9b868b6c39415659be9dd75c22bcf6b3ff5da7a7f0253cdb41405c014811fe2504c3d65030b411f81a883dc
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C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\B46811C17859FFB409CF0E904A4AA8F8
Filesize170B
MD56705d45e00093d3493ca9854220f7b11
SHA1097fc167c50fc4962cfcc9c4c3b4e64b8b7abd32
SHA256e1c1c34a83ca8aa096d476ef0e11418d4d2e18f13791e1c4890b1751560d88aa
SHA512a7e7e29608c68d1f17c5d153f35f2a319c862f0ba750c787d82e3c31aadc00b2aa7147093f120479d59dca31bea9064c7ed66dcedf8090e89ca62b76841d37c0
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C:\Users\Admin\AppData\Local\40c00c89-66e9-41f7-b57d-56bfd481b5f0\JaffaCakes118_bb4ef0f38dc73163c5284ea31437abdf17130321883d04cfd04c041efc922af9.exe
Filesize838KB
MD5361d9b1bee71debf8d966051c0369a9a
SHA1757949978d35abf2d24b77a4497e19a02a999307
SHA256bb4ef0f38dc73163c5284ea31437abdf17130321883d04cfd04c041efc922af9
SHA5122c859936590be2be37e3460378d8d832dec16add1ce87bb70c9cdf84e080fc0bde1c4444121890a32346ed56384060171e06aa208c27d0a7027aa017af23ef83