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Analysis
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max time kernel
149s -
max time network
150s -
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, 01:58
Static task
static1
Behavioral task
behavioral1
Sample
JaffaCakes118_db15fe4dbfe6a64ee56c4cfae9b3ee2326120af78e18447e652d4f391803b9b3.exe
Resource
win7-20241010-en
Behavioral task
behavioral2
Sample
JaffaCakes118_db15fe4dbfe6a64ee56c4cfae9b3ee2326120af78e18447e652d4f391803b9b3.exe
Resource
win10v2004-20241007-en
General
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Target
JaffaCakes118_db15fe4dbfe6a64ee56c4cfae9b3ee2326120af78e18447e652d4f391803b9b3.exe
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Size
794KB
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MD5
efd086526dfe4c4f996223a0eeda211a
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SHA1
4a24572a3f4d71c2600e5b8ea8b8de9c4550da28
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SHA256
db15fe4dbfe6a64ee56c4cfae9b3ee2326120af78e18447e652d4f391803b9b3
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SHA512
4c0fd8feaf2775f9581ac3a2577b0e988284f44f8c26fe7bd2f1604cfc636bec1f17def1110eba7f5c2b548e4b4baa1bc6619738d1dfce792313447086d90eff
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SSDEEP
24576:3DVOtagkDGYTv0Jb/ZXNhs0YsWRsFx3hGB:3DM6cJ/ZHMpCG
Malware Config
Extracted
djvu
http://fuyt.org/fhsgtsspen6/get.php
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extension
.nuhb
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offline_id
PfLhykvDxmCghCq8peuxBtQ3c0QBuANi8WUkuet1
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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 9 IoCs
resource yara_rule behavioral2/memory/1224-2-0x00000000021D0000-0x00000000022EB000-memory.dmp family_djvu behavioral2/memory/3100-3-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/3100-4-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/3100-5-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/3100-6-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/3100-17-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/512-21-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/512-24-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/512-22-0x0000000000400000-0x0000000000537000-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-1-5-21-2045521122-590294423-3465680274-1000\Control Panel\International\Geo\Nation JaffaCakes118_db15fe4dbfe6a64ee56c4cfae9b3ee2326120af78e18447e652d4f391803b9b3.exe -
Modifies file permissions 1 TTPs 1 IoCs
pid Process 3512 icacls.exe -
Adds Run key to start application 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-2045521122-590294423-3465680274-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\24a1ea57-c472-4495-a710-52516584d7e0\\JaffaCakes118_db15fe4dbfe6a64ee56c4cfae9b3ee2326120af78e18447e652d4f391803b9b3.exe\" --AutoStart" JaffaCakes118_db15fe4dbfe6a64ee56c4cfae9b3ee2326120af78e18447e652d4f391803b9b3.exe -
Looks up external IP address via web service 2 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.
flow ioc 15 api.2ip.ua 16 api.2ip.ua -
Suspicious use of SetThreadContext 2 IoCs
description pid Process procid_target PID 1224 set thread context of 3100 1224 JaffaCakes118_db15fe4dbfe6a64ee56c4cfae9b3ee2326120af78e18447e652d4f391803b9b3.exe 83 PID 2864 set thread context of 512 2864 JaffaCakes118_db15fe4dbfe6a64ee56c4cfae9b3ee2326120af78e18447e652d4f391803b9b3.exe 88 -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Program crash 1 IoCs
pid pid_target Process procid_target 4348 512 WerFault.exe 88 -
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_db15fe4dbfe6a64ee56c4cfae9b3ee2326120af78e18447e652d4f391803b9b3.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language JaffaCakes118_db15fe4dbfe6a64ee56c4cfae9b3ee2326120af78e18447e652d4f391803b9b3.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language icacls.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language JaffaCakes118_db15fe4dbfe6a64ee56c4cfae9b3ee2326120af78e18447e652d4f391803b9b3.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language JaffaCakes118_db15fe4dbfe6a64ee56c4cfae9b3ee2326120af78e18447e652d4f391803b9b3.exe -
Suspicious behavior: EnumeratesProcesses 2 IoCs
pid Process 3100 JaffaCakes118_db15fe4dbfe6a64ee56c4cfae9b3ee2326120af78e18447e652d4f391803b9b3.exe 3100 JaffaCakes118_db15fe4dbfe6a64ee56c4cfae9b3ee2326120af78e18447e652d4f391803b9b3.exe -
Suspicious use of WriteProcessMemory 26 IoCs
description pid Process procid_target PID 1224 wrote to memory of 3100 1224 JaffaCakes118_db15fe4dbfe6a64ee56c4cfae9b3ee2326120af78e18447e652d4f391803b9b3.exe 83 PID 1224 wrote to memory of 3100 1224 JaffaCakes118_db15fe4dbfe6a64ee56c4cfae9b3ee2326120af78e18447e652d4f391803b9b3.exe 83 PID 1224 wrote to memory of 3100 1224 JaffaCakes118_db15fe4dbfe6a64ee56c4cfae9b3ee2326120af78e18447e652d4f391803b9b3.exe 83 PID 1224 wrote to memory of 3100 1224 JaffaCakes118_db15fe4dbfe6a64ee56c4cfae9b3ee2326120af78e18447e652d4f391803b9b3.exe 83 PID 1224 wrote to memory of 3100 1224 JaffaCakes118_db15fe4dbfe6a64ee56c4cfae9b3ee2326120af78e18447e652d4f391803b9b3.exe 83 PID 1224 wrote to memory of 3100 1224 JaffaCakes118_db15fe4dbfe6a64ee56c4cfae9b3ee2326120af78e18447e652d4f391803b9b3.exe 83 PID 1224 wrote to memory of 3100 1224 JaffaCakes118_db15fe4dbfe6a64ee56c4cfae9b3ee2326120af78e18447e652d4f391803b9b3.exe 83 PID 1224 wrote to memory of 3100 1224 JaffaCakes118_db15fe4dbfe6a64ee56c4cfae9b3ee2326120af78e18447e652d4f391803b9b3.exe 83 PID 1224 wrote to memory of 3100 1224 JaffaCakes118_db15fe4dbfe6a64ee56c4cfae9b3ee2326120af78e18447e652d4f391803b9b3.exe 83 PID 1224 wrote to memory of 3100 1224 JaffaCakes118_db15fe4dbfe6a64ee56c4cfae9b3ee2326120af78e18447e652d4f391803b9b3.exe 83 PID 3100 wrote to memory of 3512 3100 JaffaCakes118_db15fe4dbfe6a64ee56c4cfae9b3ee2326120af78e18447e652d4f391803b9b3.exe 84 PID 3100 wrote to memory of 3512 3100 JaffaCakes118_db15fe4dbfe6a64ee56c4cfae9b3ee2326120af78e18447e652d4f391803b9b3.exe 84 PID 3100 wrote to memory of 3512 3100 JaffaCakes118_db15fe4dbfe6a64ee56c4cfae9b3ee2326120af78e18447e652d4f391803b9b3.exe 84 PID 3100 wrote to memory of 2864 3100 JaffaCakes118_db15fe4dbfe6a64ee56c4cfae9b3ee2326120af78e18447e652d4f391803b9b3.exe 85 PID 3100 wrote to memory of 2864 3100 JaffaCakes118_db15fe4dbfe6a64ee56c4cfae9b3ee2326120af78e18447e652d4f391803b9b3.exe 85 PID 3100 wrote to memory of 2864 3100 JaffaCakes118_db15fe4dbfe6a64ee56c4cfae9b3ee2326120af78e18447e652d4f391803b9b3.exe 85 PID 2864 wrote to memory of 512 2864 JaffaCakes118_db15fe4dbfe6a64ee56c4cfae9b3ee2326120af78e18447e652d4f391803b9b3.exe 88 PID 2864 wrote to memory of 512 2864 JaffaCakes118_db15fe4dbfe6a64ee56c4cfae9b3ee2326120af78e18447e652d4f391803b9b3.exe 88 PID 2864 wrote to memory of 512 2864 JaffaCakes118_db15fe4dbfe6a64ee56c4cfae9b3ee2326120af78e18447e652d4f391803b9b3.exe 88 PID 2864 wrote to memory of 512 2864 JaffaCakes118_db15fe4dbfe6a64ee56c4cfae9b3ee2326120af78e18447e652d4f391803b9b3.exe 88 PID 2864 wrote to memory of 512 2864 JaffaCakes118_db15fe4dbfe6a64ee56c4cfae9b3ee2326120af78e18447e652d4f391803b9b3.exe 88 PID 2864 wrote to memory of 512 2864 JaffaCakes118_db15fe4dbfe6a64ee56c4cfae9b3ee2326120af78e18447e652d4f391803b9b3.exe 88 PID 2864 wrote to memory of 512 2864 JaffaCakes118_db15fe4dbfe6a64ee56c4cfae9b3ee2326120af78e18447e652d4f391803b9b3.exe 88 PID 2864 wrote to memory of 512 2864 JaffaCakes118_db15fe4dbfe6a64ee56c4cfae9b3ee2326120af78e18447e652d4f391803b9b3.exe 88 PID 2864 wrote to memory of 512 2864 JaffaCakes118_db15fe4dbfe6a64ee56c4cfae9b3ee2326120af78e18447e652d4f391803b9b3.exe 88 PID 2864 wrote to memory of 512 2864 JaffaCakes118_db15fe4dbfe6a64ee56c4cfae9b3ee2326120af78e18447e652d4f391803b9b3.exe 88
Processes
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C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_db15fe4dbfe6a64ee56c4cfae9b3ee2326120af78e18447e652d4f391803b9b3.exe"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_db15fe4dbfe6a64ee56c4cfae9b3ee2326120af78e18447e652d4f391803b9b3.exe"1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1224 -
C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_db15fe4dbfe6a64ee56c4cfae9b3ee2326120af78e18447e652d4f391803b9b3.exe"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_db15fe4dbfe6a64ee56c4cfae9b3ee2326120af78e18447e652d4f391803b9b3.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:3100 -
C:\Windows\SysWOW64\icacls.exeicacls "C:\Users\Admin\AppData\Local\24a1ea57-c472-4495-a710-52516584d7e0" /deny *S-1-1-0:(OI)(CI)(DE,DC)3⤵
- Modifies file permissions
- System Location Discovery: System Language Discovery
PID:3512
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C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_db15fe4dbfe6a64ee56c4cfae9b3ee2326120af78e18447e652d4f391803b9b3.exe"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_db15fe4dbfe6a64ee56c4cfae9b3ee2326120af78e18447e652d4f391803b9b3.exe" --Admin IsNotAutoStart IsNotTask3⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2864 -
C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_db15fe4dbfe6a64ee56c4cfae9b3ee2326120af78e18447e652d4f391803b9b3.exe"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_db15fe4dbfe6a64ee56c4cfae9b3ee2326120af78e18447e652d4f391803b9b3.exe" --Admin IsNotAutoStart IsNotTask4⤵
- System Location Discovery: System Language Discovery
PID:512 -
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 512 -s 5685⤵
- Program crash
PID:4348
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 512 -ip 5121⤵PID:1524
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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C:\Users\Admin\AppData\Local\24a1ea57-c472-4495-a710-52516584d7e0\JaffaCakes118_db15fe4dbfe6a64ee56c4cfae9b3ee2326120af78e18447e652d4f391803b9b3.exe
Filesize794KB
MD5efd086526dfe4c4f996223a0eeda211a
SHA14a24572a3f4d71c2600e5b8ea8b8de9c4550da28
SHA256db15fe4dbfe6a64ee56c4cfae9b3ee2326120af78e18447e652d4f391803b9b3
SHA5124c0fd8feaf2775f9581ac3a2577b0e988284f44f8c26fe7bd2f1604cfc636bec1f17def1110eba7f5c2b548e4b4baa1bc6619738d1dfce792313447086d90eff