Analysis
- max time kernel
152s - max time network
155s - platform
windows10-2004_x64 - resource
win10v2004-20240226-en - resource tags
- submitted
26/05/2024, 15:18
General
- Target abc6549b39ea1c21d44b1ca196a7bc5b85207f9b2be75ea78f233ea6f34afa62.exe
- Size 8.3MB
- Sample240526-sppydsbf88
- SHA256 abc6549b39ea1c21d44b1ca196a7bc5b85207f9b2be75ea78f233ea6f34afa62
Malware Config
Signatures
- Detect PurpleFox Rootkit 13 IoCs
Detect PurpleFox Rootkit.
- Gh0st RAT payload 14 IoCs
- Gh0strat
Gh0st RAT is a remote access tool (RAT) with its source code public and it has been used by multiple Chinese groups.
- PurpleFox
PurpleFox is an exploit kit used to distribute other malware families and first seen in 2018.
- Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs 1 IoCs
- Drops file in Drivers directory 1 IoCs
- Sets DLL path for service in the registry 2 TTPs 1 IoCs
- Sets service image path in registry 2 TTPs 1 IoCs
- Checks BIOS information in registry 2 TTPs 2 IoCs
BIOS information is often read in order to detect sandboxing environments.
- Executes dropped EXE 6 IoCs
- Loads dropped DLL 3 IoCs
- UPX packed file 14 IoCs
Detects executables packed with UPX/modified UPX open source packer.
- Checks whether UAC is enabled 1 TTPs 1 IoCs
- Writes to the Master Boot Record (MBR) 1 TTPs 1 IoCs
Bootkits write to the MBR to gain persistence at a level below the operating system.
- Drops file in System32 directory 6 IoCs
- Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs
- Drops file in Program Files directory 5 IoCs
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- Program crash 1 IoCs
- Runs ping.exe 1 TTPs 1 IoCs
- Suspicious behavior: EnumeratesProcesses 4 IoCs
- Suspicious behavior: LoadsDriver 1 IoCs
- Suspicious use of AdjustPrivilegeToken 6 IoCs
- Suspicious use of SetWindowsHookEx 2 IoCs
- Suspicious use of WriteProcessMemory 21 IoCs
Processes
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C:\Users\Admin\AppData\Local\Temp\abc6549b39ea1c21d44b1ca196a7bc5b85207f9b2be75ea78f233ea6f34afa62.exe"C:\Users\Admin\AppData\Local\Temp\abc6549b39ea1c21d44b1ca196a7bc5b85207f9b2be75ea78f233ea6f34afa62.exe"1⤵
- Drops file in Program Files directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\svchost.exeC:\Users\Admin\AppData\Local\Temp\\svchost.exe2⤵
- Executes dropped EXE
- Drops file in System32 directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\cmd.exeC:\Windows\system32\cmd.exe /c ping -n 2 127.0.0.1 > nul && del C:\Users\Admin\AppData\Local\Temp\svchost.exe > nul3⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\PING.EXEping -n 2 127.0.0.14⤵
- Runs ping.exe
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C:\Users\Admin\AppData\Local\Temp\svchos.exeC:\Users\Admin\AppData\Local\Temp\\svchos.exe2⤵
- Sets DLL path for service in the registry
- Executes dropped EXE
- Loads dropped DLL
- Drops file in System32 directory
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C:\Users\Admin\AppData\Local\Temp\HD_abc6549b39ea1c21d44b1ca196a7bc5b85207f9b2be75ea78f233ea6f34afa62.exeC:\Users\Admin\AppData\Local\Temp\HD_abc6549b39ea1c21d44b1ca196a7bc5b85207f9b2be75ea78f233ea6f34afa62.exe2⤵
- Identifies VirtualBox via ACPI registry values (likely anti-VM)
- Checks BIOS information in registry
- Executes dropped EXE
- Checks whether UAC is enabled
- Writes to the Master Boot Record (MBR)
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious behavior: EnumeratesProcesses
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 4352 -s 11523⤵
- Program crash
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C:\Windows\SysWOW64\TXPlatforn.exeC:\Windows\SysWOW64\TXPlatforn.exe -auto1⤵
- Executes dropped EXE
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\TXPlatforn.exeC:\Windows\SysWOW64\TXPlatforn.exe -acsi2⤵
- Drops file in Drivers directory
- Sets service image path in registry
- Executes dropped EXE
- Suspicious behavior: LoadsDriver
- Suspicious use of AdjustPrivilegeToken
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C:\Windows\SysWOW64\svchost.exeC:\Windows\SysWOW64\svchost.exe -k "Ö÷¶¯·ÀÓù·þÎñÄ£¿é"1⤵
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C:\Windows\SysWOW64\svchost.exeC:\Windows\SysWOW64\svchost.exe -k "Ö÷¶¯·ÀÓù·þÎñÄ£¿é"1⤵
- Loads dropped DLL
- Drops file in System32 directory
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\Ö÷¶¯·ÀÓù·þÎñÄ£¿é.exeC:\Windows\system32\Ö÷¶¯·ÀÓù·þÎñÄ£¿é.exe "c:\windows\system32\240650375.txt",MainThread2⤵
- Executes dropped EXE
- Loads dropped DLL
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 432 -p 4352 -ip 43521⤵
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C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=4140 --field-trial-handle=2692,i,8678872182442199182,12502579059484928042,262144 --variations-seed-version /prefetch:81⤵
Network
MITRE ATT&CK Enterprise v15
Persistence
Boot or Logon Autostart Execution
2Registry Run Keys / Startup Folder
2Pre-OS Boot
1Bootkit
1Privilege Escalation
Boot or Logon Autostart Execution
2Registry Run Keys / Startup Folder
2Defense Evasion
Modify Registry
2Pre-OS Boot
1Bootkit
1Virtualization/Sandbox Evasion
1Replay Monitor
Loading Replay Monitor...
Downloads
HD_X.dat
HD_abc6549b39ea1c21d44b1ca196a7bc5b85207f9b2be75ea78f233ea6f34afa62.exe
RCXB2F5.tmp
X.ico
svchos.exe
svchost.exe
240650375.txt
Ö÷¶¯·ÀÓù·þÎñÄ£¿é.exe
memory/1612-7-0x0000000010000000-0x00000000101B6000-memory.dmp
memory/1612-22-0x0000000010000000-0x00000000101B6000-memory.dmp
memory/1612-8-0x0000000010000000-0x00000000101B6000-memory.dmp
memory/1612-6-0x0000000010000000-0x00000000101B6000-memory.dmp
memory/1612-4-0x0000000010000000-0x00000000101B6000-memory.dmp
memory/3764-27-0x0000000010000000-0x00000000101B6000-memory.dmp
memory/3764-16-0x0000000010000000-0x00000000101B6000-memory.dmp
memory/3764-17-0x0000000010000000-0x00000000101B6000-memory.dmp
memory/3764-15-0x0000000010000000-0x00000000101B6000-memory.dmp
memory/3764-13-0x0000000010000000-0x00000000101B6000-memory.dmp
memory/4352-50-0x0000000000410000-0x00000000015A0000-memory.dmp
memory/4352-97-0x0000000000410000-0x00000000015A0000-memory.dmp
memory/4352-98-0x0000000000410000-0x00000000015A0000-memory.dmp
memory/4352-105-0x0000000000410000-0x00000000015A0000-memory.dmp
memory/4604-39-0x0000000010000000-0x00000000101B6000-memory.dmp
memory/4604-42-0x0000000010000000-0x00000000101B6000-memory.dmp
memory/4604-34-0x0000000010000000-0x00000000101B6000-memory.dmp
memory/4604-24-0x0000000010000000-0x00000000101B6000-memory.dmp