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Analysis
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max time kernel
149s -
max time network
151s -
platform
windows10-2004_x64 -
resource
win10v2004-20241007-en -
resource tags
arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system -
submitted
30/12/2024, 22:48
Static task
static1
Behavioral task
behavioral1
Sample
JaffaCakes118_30a3db8a5b8a6dd193bc6e14f130c297cc82cf3fcc100a269f991ccb307a6b3c.exe
Resource
win7-20240903-en
Behavioral task
behavioral2
Sample
JaffaCakes118_30a3db8a5b8a6dd193bc6e14f130c297cc82cf3fcc100a269f991ccb307a6b3c.exe
Resource
win10v2004-20241007-en
General
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Target
JaffaCakes118_30a3db8a5b8a6dd193bc6e14f130c297cc82cf3fcc100a269f991ccb307a6b3c.exe
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Size
823KB
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MD5
b1dc0821d7a3beb1ab6275b0fddf2ea7
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SHA1
f2e20326079083b3148a45fefee85128f6df1472
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SHA256
30a3db8a5b8a6dd193bc6e14f130c297cc82cf3fcc100a269f991ccb307a6b3c
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SHA512
39d26d805e77dba631e5fbd62c346c3e401f3826d2c89c65c4503f8be6fe8148414244d558a69823af8ca8e6ce357043abd0592dd7a29b8da9ed02cac0fc9e7f
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SSDEEP
12288:LG6IxduDAtyEwzC+Ij0JNWR12A0qqcR8a/Xj/dqwpCve5exgyI25To11PfCBo:LG6I1kzcoJNWjn5D5q7e5JC5ToPPKB
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/824-2-0x0000000002230000-0x000000000234B000-memory.dmp family_djvu behavioral2/memory/2992-3-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/2992-4-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/2992-5-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/2992-6-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/2992-19-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/1392-23-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/1392-24-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/1392-26-0x0000000000400000-0x0000000000537000-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-1-5-21-2878641211-696417878-3864914810-1000\Control Panel\International\Geo\Nation JaffaCakes118_30a3db8a5b8a6dd193bc6e14f130c297cc82cf3fcc100a269f991ccb307a6b3c.exe -
Modifies file permissions 1 TTPs 1 IoCs
pid Process 800 icacls.exe -
Adds Run key to start application 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\bca3f397-fe72-4f22-9530-047f67135869\\JaffaCakes118_30a3db8a5b8a6dd193bc6e14f130c297cc82cf3fcc100a269f991ccb307a6b3c.exe\" --AutoStart" JaffaCakes118_30a3db8a5b8a6dd193bc6e14f130c297cc82cf3fcc100a269f991ccb307a6b3c.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 14 api.2ip.ua -
Suspicious use of SetThreadContext 2 IoCs
description pid Process procid_target PID 824 set thread context of 2992 824 JaffaCakes118_30a3db8a5b8a6dd193bc6e14f130c297cc82cf3fcc100a269f991ccb307a6b3c.exe 83 PID 2796 set thread context of 1392 2796 JaffaCakes118_30a3db8a5b8a6dd193bc6e14f130c297cc82cf3fcc100a269f991ccb307a6b3c.exe 89 -
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 4576 1392 WerFault.exe 89 -
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_30a3db8a5b8a6dd193bc6e14f130c297cc82cf3fcc100a269f991ccb307a6b3c.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language icacls.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language JaffaCakes118_30a3db8a5b8a6dd193bc6e14f130c297cc82cf3fcc100a269f991ccb307a6b3c.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language JaffaCakes118_30a3db8a5b8a6dd193bc6e14f130c297cc82cf3fcc100a269f991ccb307a6b3c.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language JaffaCakes118_30a3db8a5b8a6dd193bc6e14f130c297cc82cf3fcc100a269f991ccb307a6b3c.exe -
Suspicious behavior: EnumeratesProcesses 2 IoCs
pid Process 2992 JaffaCakes118_30a3db8a5b8a6dd193bc6e14f130c297cc82cf3fcc100a269f991ccb307a6b3c.exe 2992 JaffaCakes118_30a3db8a5b8a6dd193bc6e14f130c297cc82cf3fcc100a269f991ccb307a6b3c.exe -
Suspicious use of WriteProcessMemory 26 IoCs
description pid Process procid_target PID 824 wrote to memory of 2992 824 JaffaCakes118_30a3db8a5b8a6dd193bc6e14f130c297cc82cf3fcc100a269f991ccb307a6b3c.exe 83 PID 824 wrote to memory of 2992 824 JaffaCakes118_30a3db8a5b8a6dd193bc6e14f130c297cc82cf3fcc100a269f991ccb307a6b3c.exe 83 PID 824 wrote to memory of 2992 824 JaffaCakes118_30a3db8a5b8a6dd193bc6e14f130c297cc82cf3fcc100a269f991ccb307a6b3c.exe 83 PID 824 wrote to memory of 2992 824 JaffaCakes118_30a3db8a5b8a6dd193bc6e14f130c297cc82cf3fcc100a269f991ccb307a6b3c.exe 83 PID 824 wrote to memory of 2992 824 JaffaCakes118_30a3db8a5b8a6dd193bc6e14f130c297cc82cf3fcc100a269f991ccb307a6b3c.exe 83 PID 824 wrote to memory of 2992 824 JaffaCakes118_30a3db8a5b8a6dd193bc6e14f130c297cc82cf3fcc100a269f991ccb307a6b3c.exe 83 PID 824 wrote to memory of 2992 824 JaffaCakes118_30a3db8a5b8a6dd193bc6e14f130c297cc82cf3fcc100a269f991ccb307a6b3c.exe 83 PID 824 wrote to memory of 2992 824 JaffaCakes118_30a3db8a5b8a6dd193bc6e14f130c297cc82cf3fcc100a269f991ccb307a6b3c.exe 83 PID 824 wrote to memory of 2992 824 JaffaCakes118_30a3db8a5b8a6dd193bc6e14f130c297cc82cf3fcc100a269f991ccb307a6b3c.exe 83 PID 824 wrote to memory of 2992 824 JaffaCakes118_30a3db8a5b8a6dd193bc6e14f130c297cc82cf3fcc100a269f991ccb307a6b3c.exe 83 PID 2992 wrote to memory of 800 2992 JaffaCakes118_30a3db8a5b8a6dd193bc6e14f130c297cc82cf3fcc100a269f991ccb307a6b3c.exe 85 PID 2992 wrote to memory of 800 2992 JaffaCakes118_30a3db8a5b8a6dd193bc6e14f130c297cc82cf3fcc100a269f991ccb307a6b3c.exe 85 PID 2992 wrote to memory of 800 2992 JaffaCakes118_30a3db8a5b8a6dd193bc6e14f130c297cc82cf3fcc100a269f991ccb307a6b3c.exe 85 PID 2992 wrote to memory of 2796 2992 JaffaCakes118_30a3db8a5b8a6dd193bc6e14f130c297cc82cf3fcc100a269f991ccb307a6b3c.exe 86 PID 2992 wrote to memory of 2796 2992 JaffaCakes118_30a3db8a5b8a6dd193bc6e14f130c297cc82cf3fcc100a269f991ccb307a6b3c.exe 86 PID 2992 wrote to memory of 2796 2992 JaffaCakes118_30a3db8a5b8a6dd193bc6e14f130c297cc82cf3fcc100a269f991ccb307a6b3c.exe 86 PID 2796 wrote to memory of 1392 2796 JaffaCakes118_30a3db8a5b8a6dd193bc6e14f130c297cc82cf3fcc100a269f991ccb307a6b3c.exe 89 PID 2796 wrote to memory of 1392 2796 JaffaCakes118_30a3db8a5b8a6dd193bc6e14f130c297cc82cf3fcc100a269f991ccb307a6b3c.exe 89 PID 2796 wrote to memory of 1392 2796 JaffaCakes118_30a3db8a5b8a6dd193bc6e14f130c297cc82cf3fcc100a269f991ccb307a6b3c.exe 89 PID 2796 wrote to memory of 1392 2796 JaffaCakes118_30a3db8a5b8a6dd193bc6e14f130c297cc82cf3fcc100a269f991ccb307a6b3c.exe 89 PID 2796 wrote to memory of 1392 2796 JaffaCakes118_30a3db8a5b8a6dd193bc6e14f130c297cc82cf3fcc100a269f991ccb307a6b3c.exe 89 PID 2796 wrote to memory of 1392 2796 JaffaCakes118_30a3db8a5b8a6dd193bc6e14f130c297cc82cf3fcc100a269f991ccb307a6b3c.exe 89 PID 2796 wrote to memory of 1392 2796 JaffaCakes118_30a3db8a5b8a6dd193bc6e14f130c297cc82cf3fcc100a269f991ccb307a6b3c.exe 89 PID 2796 wrote to memory of 1392 2796 JaffaCakes118_30a3db8a5b8a6dd193bc6e14f130c297cc82cf3fcc100a269f991ccb307a6b3c.exe 89 PID 2796 wrote to memory of 1392 2796 JaffaCakes118_30a3db8a5b8a6dd193bc6e14f130c297cc82cf3fcc100a269f991ccb307a6b3c.exe 89 PID 2796 wrote to memory of 1392 2796 JaffaCakes118_30a3db8a5b8a6dd193bc6e14f130c297cc82cf3fcc100a269f991ccb307a6b3c.exe 89
Processes
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C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_30a3db8a5b8a6dd193bc6e14f130c297cc82cf3fcc100a269f991ccb307a6b3c.exe"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_30a3db8a5b8a6dd193bc6e14f130c297cc82cf3fcc100a269f991ccb307a6b3c.exe"1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:824 -
C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_30a3db8a5b8a6dd193bc6e14f130c297cc82cf3fcc100a269f991ccb307a6b3c.exe"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_30a3db8a5b8a6dd193bc6e14f130c297cc82cf3fcc100a269f991ccb307a6b3c.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:2992 -
C:\Windows\SysWOW64\icacls.exeicacls "C:\Users\Admin\AppData\Local\bca3f397-fe72-4f22-9530-047f67135869" /deny *S-1-1-0:(OI)(CI)(DE,DC)3⤵
- Modifies file permissions
- System Location Discovery: System Language Discovery
PID:800
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C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_30a3db8a5b8a6dd193bc6e14f130c297cc82cf3fcc100a269f991ccb307a6b3c.exe"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_30a3db8a5b8a6dd193bc6e14f130c297cc82cf3fcc100a269f991ccb307a6b3c.exe" --Admin IsNotAutoStart IsNotTask3⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2796 -
C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_30a3db8a5b8a6dd193bc6e14f130c297cc82cf3fcc100a269f991ccb307a6b3c.exe"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_30a3db8a5b8a6dd193bc6e14f130c297cc82cf3fcc100a269f991ccb307a6b3c.exe" --Admin IsNotAutoStart IsNotTask4⤵
- System Location Discovery: System Language Discovery
PID:1392 -
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 1392 -s 5685⤵
- Program crash
PID:4576
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 1392 -ip 13921⤵PID:4672
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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C:\Users\Admin\AppData\Local\bca3f397-fe72-4f22-9530-047f67135869\JaffaCakes118_30a3db8a5b8a6dd193bc6e14f130c297cc82cf3fcc100a269f991ccb307a6b3c.exe
Filesize823KB
MD5b1dc0821d7a3beb1ab6275b0fddf2ea7
SHA1f2e20326079083b3148a45fefee85128f6df1472
SHA25630a3db8a5b8a6dd193bc6e14f130c297cc82cf3fcc100a269f991ccb307a6b3c
SHA51239d26d805e77dba631e5fbd62c346c3e401f3826d2c89c65c4503f8be6fe8148414244d558a69823af8ca8e6ce357043abd0592dd7a29b8da9ed02cac0fc9e7f