Analysis
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max time kernel
94s -
max time network
135s -
platform
windows10-2004_x64 -
resource
win10v2004-20240426-en -
resource tags
arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system -
submitted
01-06-2024 21:32
Static task
static1
Behavioral task
behavioral1
Sample
2024-06-01_821bbfc8f0a946efd3d8c9b8aa6d68ee_megazord.exe
Resource
win7-20240508-en
Behavioral task
behavioral2
Sample
2024-06-01_821bbfc8f0a946efd3d8c9b8aa6d68ee_megazord.exe
Resource
win10v2004-20240426-en
General
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Target
2024-06-01_821bbfc8f0a946efd3d8c9b8aa6d68ee_megazord.exe
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Size
6.0MB
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MD5
821bbfc8f0a946efd3d8c9b8aa6d68ee
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SHA1
5bf3f157d56a61fb4ebb92a35664aafcceb2b943
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SHA256
7b5cb683875a42757083a2e02fb6cc54d1f472569fc3d570992a18ac019f722e
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SHA512
c1ab71e6be5d67fa6fcae1b58c1f8528ebbda63cd790640fae6ebc1229b5cb85583abad16839d72e100dd393045a3ec322a81107a25ce38a3da319389915094d
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SSDEEP
98304:vBsvwVReAo6kSF8yYZl1gpJhFEo2ylLj0bsk4BAH6+6TEE:vBaanoJ5ZleLhKKbtY6bEE
Malware Config
Extracted
quasar
1.4.1
05KAN24
4Mekey.myftp.biz:4782
79b4968e-3635-4865-94f2-359cde910023
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encryption_key
5A1721840C7FCFA52998D9F98F97F4B8137E6734
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install_name
Windows Server.exe
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log_directory
Logs
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reconnect_delay
3000
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startup_key
Quasar Client Startup
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subdirectory
Windows Update
Signatures
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Quasar payload 1 IoCs
Processes:
resource yara_rule behavioral2/memory/2648-1-0x0000000000400000-0x0000000000724000-memory.dmp family_quasar -
Detects Windows executables referencing non-Windows User-Agents 1 IoCs
Processes:
resource yara_rule behavioral2/memory/2648-1-0x0000000000400000-0x0000000000724000-memory.dmp INDICATOR_SUSPICIOUS_EXE_NoneWindowsUA -
Detects binaries (Windows and macOS) referencing many web browsers. Observed in information stealers. 1 IoCs
Processes:
resource yara_rule behavioral2/memory/2648-1-0x0000000000400000-0x0000000000724000-memory.dmp INDICATOR_SUSPICIOUS_Binary_References_Browsers -
Detects executables containing common artifacts observed in infostealers 1 IoCs
Processes:
resource yara_rule behavioral2/memory/2648-1-0x0000000000400000-0x0000000000724000-memory.dmp INDICATOR_SUSPICIOUS_GENInfoStealer -
Adds Run key to start application 2 TTPs 1 IoCs
Processes:
2024-06-01_821bbfc8f0a946efd3d8c9b8aa6d68ee_megazord.exedescription ioc process Set value (str) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\2024-06-01_821bbfc8f0a946efd3d8c9b8aa6d68ee_megazord = "C:\\Users\\Admin\\2024-06-01_821bbfc8f0a946efd3d8c9b8aa6d68ee_megazord.exe" 2024-06-01_821bbfc8f0a946efd3d8c9b8aa6d68ee_megazord.exe -
Suspicious use of SetThreadContext 1 IoCs
Processes:
2024-06-01_821bbfc8f0a946efd3d8c9b8aa6d68ee_megazord.exedescription pid process target process PID 1432 set thread context of 2648 1432 2024-06-01_821bbfc8f0a946efd3d8c9b8aa6d68ee_megazord.exe jsc.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
Processes:
jsc.exedescription pid process Token: SeDebugPrivilege 2648 jsc.exe -
Suspicious use of SetWindowsHookEx 1 IoCs
Processes:
jsc.exepid process 2648 jsc.exe -
Suspicious use of WriteProcessMemory 8 IoCs
Processes:
2024-06-01_821bbfc8f0a946efd3d8c9b8aa6d68ee_megazord.exedescription pid process target process PID 1432 wrote to memory of 2648 1432 2024-06-01_821bbfc8f0a946efd3d8c9b8aa6d68ee_megazord.exe jsc.exe PID 1432 wrote to memory of 2648 1432 2024-06-01_821bbfc8f0a946efd3d8c9b8aa6d68ee_megazord.exe jsc.exe PID 1432 wrote to memory of 2648 1432 2024-06-01_821bbfc8f0a946efd3d8c9b8aa6d68ee_megazord.exe jsc.exe PID 1432 wrote to memory of 2648 1432 2024-06-01_821bbfc8f0a946efd3d8c9b8aa6d68ee_megazord.exe jsc.exe PID 1432 wrote to memory of 2648 1432 2024-06-01_821bbfc8f0a946efd3d8c9b8aa6d68ee_megazord.exe jsc.exe PID 1432 wrote to memory of 2648 1432 2024-06-01_821bbfc8f0a946efd3d8c9b8aa6d68ee_megazord.exe jsc.exe PID 1432 wrote to memory of 2648 1432 2024-06-01_821bbfc8f0a946efd3d8c9b8aa6d68ee_megazord.exe jsc.exe PID 1432 wrote to memory of 2648 1432 2024-06-01_821bbfc8f0a946efd3d8c9b8aa6d68ee_megazord.exe jsc.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-06-01_821bbfc8f0a946efd3d8c9b8aa6d68ee_megazord.exe"C:\Users\Admin\AppData\Local\Temp\2024-06-01_821bbfc8f0a946efd3d8c9b8aa6d68ee_megazord.exe"1⤵
- Adds Run key to start application
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
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C:\Windows\Microsoft.NET\Framework\v4.0.30319\jsc.exe"C:\Windows\Microsoft.NET\Framework\v4.0.30319\jsc.exe"2⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
Network
MITRE ATT&CK Matrix ATT&CK v13
Replay Monitor
Loading Replay Monitor...
Downloads
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memory/2648-1-0x0000000000400000-0x0000000000724000-memory.dmpFilesize
3.1MB
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memory/2648-2-0x00000000750EE000-0x00000000750EF000-memory.dmpFilesize
4KB
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memory/2648-3-0x00000000058A0000-0x0000000005E44000-memory.dmpFilesize
5.6MB
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memory/2648-4-0x00000000052F0000-0x0000000005382000-memory.dmpFilesize
584KB
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memory/2648-5-0x00000000750E0000-0x0000000075890000-memory.dmpFilesize
7.7MB
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memory/2648-6-0x0000000005490000-0x000000000549A000-memory.dmpFilesize
40KB
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memory/2648-7-0x0000000006470000-0x0000000006A88000-memory.dmpFilesize
6.1MB
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memory/2648-8-0x0000000005EC0000-0x0000000005F10000-memory.dmpFilesize
320KB
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memory/2648-9-0x0000000006130000-0x00000000061E2000-memory.dmpFilesize
712KB
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memory/2648-12-0x0000000007850000-0x0000000007862000-memory.dmpFilesize
72KB
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memory/2648-13-0x00000000078B0000-0x00000000078EC000-memory.dmpFilesize
240KB
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memory/2648-14-0x0000000007960000-0x00000000079C6000-memory.dmpFilesize
408KB
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memory/2648-15-0x00000000750EE000-0x00000000750EF000-memory.dmpFilesize
4KB
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memory/2648-16-0x00000000750E0000-0x0000000075890000-memory.dmpFilesize
7.7MB