Windows Analysis Report
ATT00004.zip

Overview

General Information

Sample name: ATT00004.zip
Analysis ID: 1544863
MD5: 1bdac065cd8abdafdad2aa0f8b881428
SHA1: 6657fc8396e80a79b4b2525dc5f27a92d5e2b7cb
SHA256: 35d26ed6734c6903e52a887fa243f46626bf4d8787352b79a6399a2d8b980edf
Infos:

Detection

Score: 2
Range: 0 - 100
Whitelisted: false
Confidence: 40%

Signatures

Allocates memory with a write watch (potentially for evading sandboxes)
Creates a process in suspended mode (likely to inject code)
Found a high number of Window / User specific system calls (may be a loop to detect user behavior)
May sleep (evasive loops) to hinder dynamic analysis
Tries to resolve domain names, but no domain seems valid (expired dropper behavior)

Classification

Source: C:\Windows\SysWOW64\unarchiver.exe File opened: C:\Windows\WinSxS\x86_microsoft.vc80.crt_1fc8b3b9a1e18e3b_8.0.50727.9672_none_d08f9da24428a513\MSVCR80.dll Jump to behavior
Tries to resolve domain names, but no domain seems valid (expired dropper behavior)
Source: unknown DNS traffic detected: query: 198.187.3.20.in-addr.arpa replaycode: Name error (3)
Source: unknown UDP traffic detected without corresponding DNS query: 1.1.1.1
Source: global traffic DNS traffic detected: DNS query: 198.187.3.20.in-addr.arpa
Source: classification engine Classification label: clean2.winZIP@4/1@1/0
Source: C:\Windows\SysWOW64\unarchiver.exe Mutant created: NULL
Source: C:\Windows\System32\conhost.exe Mutant created: \Sessions\1\BaseNamedObjects\Local\SM0:3364:120:WilError_03
Source: C:\Windows\SysWOW64\unarchiver.exe File created: C:\Users\user\AppData\Local\Temp\unarchiver.log Jump to behavior
Source: C:\Windows\SysWOW64\unarchiver.exe Key opened: HKEY_CURRENT_USER\Software\Policies\Microsoft\Windows\Safer\CodeIdentifiers Jump to behavior
Source: unknown Process created: C:\Windows\SysWOW64\unarchiver.exe "C:\Windows\SysWOW64\unarchiver.exe" "C:\Users\user\Desktop\ATT00004.zip"
Source: C:\Windows\SysWOW64\unarchiver.exe Process created: C:\Windows\SysWOW64\7za.exe "C:\Windows\System32\7za.exe" x -pinfected -y -o"C:\Users\user\AppData\Local\Temp\b22xvwxz.elc" "C:\Users\user\Desktop\ATT00004.zip"
Source: C:\Windows\SysWOW64\7za.exe Process created: C:\Windows\System32\conhost.exe C:\Windows\system32\conhost.exe 0xffffffff -ForceV1
Source: C:\Windows\SysWOW64\unarchiver.exe Process created: C:\Windows\SysWOW64\7za.exe "C:\Windows\System32\7za.exe" x -pinfected -y -o"C:\Users\user\AppData\Local\Temp\b22xvwxz.elc" "C:\Users\user\Desktop\ATT00004.zip" Jump to behavior
Source: C:\Windows\SysWOW64\unarchiver.exe Section loaded: mscoree.dll Jump to behavior
Source: C:\Windows\SysWOW64\unarchiver.exe Section loaded: apphelp.dll Jump to behavior
Source: C:\Windows\SysWOW64\unarchiver.exe Section loaded: kernel.appcore.dll Jump to behavior
Source: C:\Windows\SysWOW64\unarchiver.exe Section loaded: version.dll Jump to behavior
Source: C:\Windows\SysWOW64\unarchiver.exe Section loaded: windows.storage.dll Jump to behavior
Source: C:\Windows\SysWOW64\unarchiver.exe Section loaded: wldp.dll Jump to behavior
Source: C:\Windows\SysWOW64\unarchiver.exe Section loaded: profapi.dll Jump to behavior
Source: C:\Windows\SysWOW64\unarchiver.exe Section loaded: cryptsp.dll Jump to behavior
Source: C:\Windows\SysWOW64\unarchiver.exe Section loaded: rsaenh.dll Jump to behavior
Source: C:\Windows\SysWOW64\unarchiver.exe Section loaded: cryptbase.dll Jump to behavior
Source: C:\Windows\SysWOW64\7za.exe Section loaded: 7z.dll Jump to behavior
Source: C:\Windows\SysWOW64\unarchiver.exe File opened: C:\Windows\WinSxS\x86_microsoft.vc80.crt_1fc8b3b9a1e18e3b_8.0.50727.9672_none_d08f9da24428a513\MSVCR80.dll Jump to behavior
Source: C:\Windows\SysWOW64\unarchiver.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\SysWOW64\unarchiver.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\SysWOW64\unarchiver.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\SysWOW64\unarchiver.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\SysWOW64\unarchiver.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\SysWOW64\unarchiver.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\SysWOW64\unarchiver.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\SysWOW64\unarchiver.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\SysWOW64\unarchiver.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\SysWOW64\unarchiver.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\SysWOW64\unarchiver.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\SysWOW64\unarchiver.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\SysWOW64\unarchiver.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\SysWOW64\unarchiver.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\SysWOW64\unarchiver.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\SysWOW64\unarchiver.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\SysWOW64\unarchiver.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\SysWOW64\unarchiver.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\SysWOW64\unarchiver.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\SysWOW64\unarchiver.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\SysWOW64\unarchiver.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\SysWOW64\unarchiver.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\SysWOW64\unarchiver.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\SysWOW64\unarchiver.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\SysWOW64\unarchiver.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\SysWOW64\unarchiver.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\SysWOW64\unarchiver.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Allocates memory with a write watch (potentially for evading sandboxes)
Source: C:\Windows\SysWOW64\unarchiver.exe Memory allocated: 1480000 memory reserve | memory write watch Jump to behavior
Source: C:\Windows\SysWOW64\unarchiver.exe Memory allocated: 31E0000 memory reserve | memory write watch Jump to behavior
Source: C:\Windows\SysWOW64\unarchiver.exe Memory allocated: 14F0000 memory commit | memory reserve | memory write watch Jump to behavior
Found a high number of Window / User specific system calls (may be a loop to detect user behavior)
Source: C:\Windows\SysWOW64\unarchiver.exe Window / User API: threadDelayed 575 Jump to behavior
Source: C:\Windows\SysWOW64\unarchiver.exe Window / User API: threadDelayed 9397 Jump to behavior
May sleep (evasive loops) to hinder dynamic analysis
Source: C:\Windows\SysWOW64\unarchiver.exe TID: 5472 Thread sleep count: 575 > 30 Jump to behavior
Source: C:\Windows\SysWOW64\unarchiver.exe TID: 5472 Thread sleep time: -287500s >= -30000s Jump to behavior
Source: C:\Windows\SysWOW64\unarchiver.exe TID: 5472 Thread sleep count: 9397 > 30 Jump to behavior
Source: C:\Windows\SysWOW64\unarchiver.exe TID: 5472 Thread sleep time: -4698500s >= -30000s Jump to behavior
Source: C:\Windows\SysWOW64\unarchiver.exe Code function: 0_2_0142B286 GetSystemInfo, 0_2_0142B286
Source: C:\Windows\SysWOW64\unarchiver.exe Memory allocated: page read and write | page guard Jump to behavior
Creates a process in suspended mode (likely to inject code)
Source: C:\Windows\SysWOW64\unarchiver.exe Process created: C:\Windows\SysWOW64\7za.exe "C:\Windows\System32\7za.exe" x -pinfected -y -o"C:\Users\user\AppData\Local\Temp\b22xvwxz.elc" "C:\Users\user\Desktop\ATT00004.zip" Jump to behavior
Source: C:\Windows\SysWOW64\unarchiver.exe Key value queried: HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Cryptography MachineGuid Jump to behavior
windows-stand
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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 dnsIp2 2 Behavior Graph ID: 1544863 Sample: ATT00004.zip Startdate: 29/10/2024 Architecture: WINDOWS Score: 2 13 198.187.3.20.in-addr.arpa 2->13 7 unarchiver.exe 4 2->7         started        process3 process4 9 7za.exe 2 7->9         started        process5 11 conhost.exe 9->11         started       
⊘No contacted IP infos

Contacted Domains

Name IP Active
198.187.3.20.in-addr.arpa unknown unknown