Analysis
- max time kernel
148s - max time network
141s - platform
windows11-ltsc_2024_x64 - resource
win11ltsc2024-20260709-en - resource tags
- submitted
10/07/2026, 19:40
General
- Target PmmUidBypass.exe
- Size 6.0MB
- Sample260710-ydn5lsav4x
- SHA256 c52321ba55644154661a8e3d7eba729cf0b33492c267655f073d3b3d2e4508f7
Malware Config
Signatures
- Looks for VirtualBox Guest Additions in registry 2 TTPs 1 IoCs
- Looks for VMWare Tools registry key 2 TTPs 1 IoCs
- Checks BIOS information in registry 2 TTPs 2 IoCs
BIOS information is often read in order to detect sandboxing environments.
- Loads dropped DLL 2 IoCs
- Contacts third-party web service commonly abused for C2 1 TTPs 2 IoCs
Legitimate web (hosting) services can be abused by malware authors to host malware or C2s.
- Maps connected drives based on registry 3 TTPs 2 IoCs
Disk information is often read in order to detect sandboxing environments.
- Costura .NET executable packer 1 IoCs
Costura packer aka Costura Fody, is an add-in for the .NET framework that embeds all external dependency .dll files as resources inside main executable.
- Enumerates system info in registry 2 TTPs 3 IoCs
- Suspicious behavior: EnumeratesProcesses 64 IoCs
- Suspicious use of AdjustPrivilegeToken 1 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\PmmUidBypass.exe"C:\Users\Admin\AppData\Local\Temp\PmmUidBypass.exe"1⤵
- Looks for VirtualBox Guest Additions in registry
- Looks for VMWare Tools registry key
- Checks BIOS information in registry
- Loads dropped DLL
- Maps connected drives based on registry
- Enumerates system info in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
MPXCJ.dll
UIDBypassDll.dll
memory/1760-13-0x00000279F2260000-0x00000279F307E000-memory.dmp
memory/1760-14-0x00007FFBCBBE0000-0x00007FFBCC584000-memory.dmp
memory/1760-7-0x00007FFBCBBE0000-0x00007FFBCC584000-memory.dmp
memory/1760-8-0x00007FFBCBBE0000-0x00007FFBCC584000-memory.dmp
memory/1760-9-0x00007FFBCBBE0000-0x00007FFBCC584000-memory.dmp
memory/1760-10-0x00007FFBCBBE0000-0x00007FFBCC584000-memory.dmp
memory/1760-11-0x00007FFBCBBE0000-0x00007FFBCC584000-memory.dmp
memory/1760-1-0x00000279EF490000-0x00000279EFA8E000-memory.dmp
memory/1760-17-0x00007FFBCBBE0000-0x00007FFBCC584000-memory.dmp
memory/1760-15-0x00007FFBCBBE0000-0x00007FFBCC584000-memory.dmp
memory/1760-3-0x00007FFBCBBE0000-0x00007FFBCC584000-memory.dmp
memory/1760-0-0x00007FFBCBD6F000-0x00007FFBCBD70000-memory.dmp
memory/1760-12-0x00007FFBCBBE0000-0x00007FFBCC584000-memory.dmp
memory/1760-21-0x00000279F16B0000-0x00000279F16C6000-memory.dmp
memory/1760-22-0x00000279F3E30000-0x00000279F404C000-memory.dmp
memory/1760-23-0x00007FFBCBBE0000-0x00007FFBCC584000-memory.dmp
memory/1760-24-0x00007FFBCBBE0000-0x00007FFBCC584000-memory.dmp
memory/1760-26-0x00007FFBCBBE0000-0x00007FFBCC584000-memory.dmp
memory/1760-27-0x00007FFBCBBE0000-0x00007FFBCC584000-memory.dmp
memory/1760-28-0x00007FFBCBBE0000-0x00007FFBCC584000-memory.dmp
memory/1760-29-0x00007FFBCBBE0000-0x00007FFBCC584000-memory.dmp
memory/1760-30-0x00007FFBCBBE0000-0x00007FFBCC584000-memory.dmp
memory/1760-31-0x00007FFBCBBE0000-0x00007FFBCC584000-memory.dmp