Analysis
- max time kernel
149s - max time network
151s - platform
windows10-2004_x64 - resource
win10v2004-20240412-en - resource tags
- submitted
21/04/2024, 19:08
General
- Target fff794a08feb067c1b118bc9fe7c7beb_JaffaCakes118.exe
- Size 760KB
- Sample240421-xtgj2aab2v
- SHA256 46c3e433f35f63be6fbc3f0aee54abbddadc8078db9fef091a84253b3aa0b41a
Malware Config
Extracted
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djvu
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http://astdg.top/nddddhsspen6/get.php
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extension
.moqs
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offline_id
CatwRkqdYh2Jomn6DqwFoGgcSbDsle1xlE1NPtt1
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payload_url
http://securebiz.org/dl/build2.exe
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ransomnote
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Signatures
- Detected Djvu ransomware 17 IoCs
- Djvu Ransomware
Ransomware which is a variant of the STOP family.
- Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
- Modifies file permissions 1 TTPs 1 IoCs
- Adds Run key to start application 2 TTPs 1 IoCs
- Looks up external IP address via web service 3 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.
- Suspicious use of SetThreadContext 2 IoCs
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- Suspicious behavior: EnumeratesProcesses 4 IoCs
- Suspicious use of WriteProcessMemory 26 IoCs
Processes
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C:\Users\Admin\AppData\Local\Temp\fff794a08feb067c1b118bc9fe7c7beb_JaffaCakes118.exe"C:\Users\Admin\AppData\Local\Temp\fff794a08feb067c1b118bc9fe7c7beb_JaffaCakes118.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\fff794a08feb067c1b118bc9fe7c7beb_JaffaCakes118.exe"C:\Users\Admin\AppData\Local\Temp\fff794a08feb067c1b118bc9fe7c7beb_JaffaCakes118.exe"2⤵
- Checks computer location settings
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\icacls.exeicacls "C:\Users\Admin\AppData\Local\00676118-d494-42cc-b145-bf41b20e53f8" /deny *S-1-1-0:(OI)(CI)(DE,DC)3⤵
- Modifies file permissions
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C:\Users\Admin\AppData\Local\Temp\fff794a08feb067c1b118bc9fe7c7beb_JaffaCakes118.exe"C:\Users\Admin\AppData\Local\Temp\fff794a08feb067c1b118bc9fe7c7beb_JaffaCakes118.exe" --Admin IsNotAutoStart IsNotTask3⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\fff794a08feb067c1b118bc9fe7c7beb_JaffaCakes118.exe"C:\Users\Admin\AppData\Local\Temp\fff794a08feb067c1b118bc9fe7c7beb_JaffaCakes118.exe" --Admin IsNotAutoStart IsNotTask4⤵
- Suspicious behavior: EnumeratesProcesses
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
24BD96D5497F70B3F510A6B53CD43F3E_3A89246FB90C5EE6620004F1AE0EB0EA
CAF4703619713E3F18D8A9D5D88D6288_F2DAF19C1F776537105D08FC8D978464
24BD96D5497F70B3F510A6B53CD43F3E_3A89246FB90C5EE6620004F1AE0EB0EA
CAF4703619713E3F18D8A9D5D88D6288_F2DAF19C1F776537105D08FC8D978464
fff794a08feb067c1b118bc9fe7c7beb_JaffaCakes118.exe
memory/1296-5-0x0000000000400000-0x0000000000537000-memory.dmp
memory/1296-15-0x0000000000400000-0x0000000000537000-memory.dmp
memory/1296-6-0x0000000000400000-0x0000000000537000-memory.dmp
memory/1296-3-0x0000000000400000-0x0000000000537000-memory.dmp
memory/1296-4-0x0000000000400000-0x0000000000537000-memory.dmp
memory/1412-1-0x0000000002590000-0x000000000262A000-memory.dmp
memory/1412-2-0x0000000002630000-0x000000000274B000-memory.dmp
memory/4516-19-0x0000000002460000-0x00000000024F8000-memory.dmp
memory/4988-22-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4988-21-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4988-20-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4988-27-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4988-28-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4988-29-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4988-32-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4988-34-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4988-35-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4988-36-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4988-37-0x0000000000400000-0x0000000000537000-memory.dmp