Windows Analysis Report
dfsvc.exe

Overview

General Information

Sample name: dfsvc.exe
Analysis ID: 1541358
MD5: 3597d9e93852fddb92e0a0cf0452bb61
SHA1: d25c62a57ac3000244741bda129f483f2347efa6
SHA256: 6e6cb0729cb902420739148ae23bf1c7959bc8ea2bf6b6277c5c0de45aa77df6
Infos:

Detection

Score: 4
Range: 0 - 100
Whitelisted: false
Confidence: 60%

Signatures

Allocates memory with a write watch (potentially for evading sandboxes)
Contains long sleeps (>= 3 min)
May sleep (evasive loops) to hinder dynamic analysis
Program does not show much activity (idle)
Queries the volume information (name, serial number etc) of a device
Sample execution stops while process was sleeping (likely an evasion)
Sample file is different than original file name gathered from version info
Uses code obfuscation techniques (call, push, ret)

Classification

Source: dfsvc.exe Static PE information: certificate valid
Source: dfsvc.exe Static PE information: HIGH_ENTROPY_VA, DYNAMIC_BASE, NX_COMPAT, NO_SEH, TERMINAL_SERVER_AWARE
Source: Binary string: dfsvc.pdbD.^. P._CorExeMainmscoree.dll source: dfsvc.exe
Source: Binary string: dfsvc.pdb source: dfsvc.exe
Sample file is different than original file name gathered from version info
Source: dfsvc.exe, 00000000.00000002.751715006.000000000049D000.00000004.00000020.00020000.00000000.sdmp Binary or memory string: OriginalFilenameclr.dllT vs dfsvc.exe
Source: classification engine Classification label: clean4.winEXE@1/0@0/0
Source: C:\Users\user\Desktop\dfsvc.exe Mutant created: NULL
Source: dfsvc.exe Static PE information: Section: .text IMAGE_SCN_CNT_CODE, IMAGE_SCN_MEM_EXECUTE, IMAGE_SCN_MEM_READ
Source: dfsvc.exe Static file information: TRID: Win32 Executable (generic) Net Framework (10011505/4) 50.01%
Source: C:\Users\user\Desktop\dfsvc.exe Key opened: HKEY_LOCAL_MACHINE\Software\Policies\Microsoft\Windows\Safer\CodeIdentifiers Jump to behavior
Source: C:\Users\user\Desktop\dfsvc.exe Section loaded: version.dll Jump to behavior
Source: C:\Users\user\Desktop\dfsvc.exe Section loaded: vcruntime140_clr0400.dll Jump to behavior
Source: C:\Users\user\Desktop\dfsvc.exe Section loaded: ucrtbase_clr0400.dll Jump to behavior
Source: C:\Users\user\Desktop\dfsvc.exe Section loaded: cryptbase.dll Jump to behavior
Source: C:\Users\user\Desktop\dfsvc.exe Section loaded: cryptsp.dll Jump to behavior
Source: C:\Users\user\Desktop\dfsvc.exe Section loaded: rpcrtremote.dll Jump to behavior
Source: dfsvc.exe Static PE information: certificate valid
Source: initial sample Static PE information: Valid certificate with Microsoft Issuer
Source: dfsvc.exe Static PE information: data directory type: IMAGE_DIRECTORY_ENTRY_COM_DESCRIPTOR
Source: dfsvc.exe Static PE information: HIGH_ENTROPY_VA, DYNAMIC_BASE, NX_COMPAT, NO_SEH, TERMINAL_SERVER_AWARE
Source: dfsvc.exe Static PE information: data directory type: IMAGE_DIRECTORY_ENTRY_DEBUG
Source: Binary string: dfsvc.pdbD.^. P._CorExeMainmscoree.dll source: dfsvc.exe
Source: Binary string: dfsvc.pdb source: dfsvc.exe
Uses code obfuscation techniques (call, push, ret)
Source: C:\Users\user\Desktop\dfsvc.exe Code function: 0_2_000007FE93D500BD pushad ; iretd 0_2_000007FE93D500C1
Source: C:\Users\user\Desktop\dfsvc.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Users\user\Desktop\dfsvc.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Users\user\Desktop\dfsvc.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Users\user\Desktop\dfsvc.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Users\user\Desktop\dfsvc.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Users\user\Desktop\dfsvc.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Users\user\Desktop\dfsvc.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Users\user\Desktop\dfsvc.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Users\user\Desktop\dfsvc.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Users\user\Desktop\dfsvc.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Users\user\Desktop\dfsvc.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Users\user\Desktop\dfsvc.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Users\user\Desktop\dfsvc.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Users\user\Desktop\dfsvc.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Users\user\Desktop\dfsvc.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Users\user\Desktop\dfsvc.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Allocates memory with a write watch (potentially for evading sandboxes)
Source: C:\Users\user\Desktop\dfsvc.exe Memory allocated: 3B0000 memory reserve | memory write watch Jump to behavior
Source: C:\Users\user\Desktop\dfsvc.exe Memory allocated: 1A400000 memory reserve | memory write watch Jump to behavior
Contains long sleeps (>= 3 min)
Source: C:\Users\user\Desktop\dfsvc.exe Thread delayed: delay time: 922337203685477 Jump to behavior
Source: C:\Users\user\Desktop\dfsvc.exe Thread delayed: delay time: 600000 Jump to behavior
May sleep (evasive loops) to hinder dynamic analysis
Source: C:\Users\user\Desktop\dfsvc.exe TID: 3644 Thread sleep time: -60000s >= -30000s Jump to behavior
Source: C:\Users\user\Desktop\dfsvc.exe TID: 3648 Thread sleep time: -922337203685477s >= -30000s Jump to behavior
Source: C:\Users\user\Desktop\dfsvc.exe TID: 3648 Thread sleep time: -600000s >= -30000s Jump to behavior
Program does not show much activity (idle)
Source: all processes Thread injection, dropped files, key value created, disk infection and DNS query: no activity detected
Sample execution stops while process was sleeping (likely an evasion)
Source: C:\Users\user\Desktop\dfsvc.exe Last function: Thread delayed
Source: C:\Users\user\Desktop\dfsvc.exe Thread delayed: delay time: 922337203685477 Jump to behavior
Source: C:\Users\user\Desktop\dfsvc.exe Thread delayed: delay time: 600000 Jump to behavior
Program does not show much activity (idle)
Source: all processes Thread injection, dropped files, key value created, disk infection and DNS query: no activity detected
Source: C:\Users\user\Desktop\dfsvc.exe Memory allocated: page read and write | page guard Jump to behavior
Queries the volume information (name, serial number etc) of a device
Source: C:\Users\user\Desktop\dfsvc.exe Queries volume information: C:\Users\user\Desktop\dfsvc.exe VolumeInformation Jump to behavior
Source: C:\Users\user\Desktop\dfsvc.exe Key value queried: HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Cryptography MachineGuid Jump to behavior
windows-stand
Hide Legend

Legend:

  • Process
  • Signature
  • Created File
  • DNS/IP Info
  • Is Dropped
  • Is Windows Process
  • Number of created Registry Values
  • Number of created Files
  • Visual Basic
  • Delphi
  • Java
  • .Net C# or VB.NET
  • C, C++ or other language
  • Is malicious
  • Internet
behaviorgraph top1 process2 2 Behavior Graph ID: 1541358 Sample: dfsvc.exe Startdate: 24/10/2024 Architecture: WINDOWS Score: 4 4 dfsvc.exe 2->4         started       
⊘No contacted IP infos

Contacted Domains

Name IP Active
bg.microsoft.map.fastly.net 199.232.210.172 true