Windows Analysis Report
38ee10f0-ac87-4c0c-9d71-65200cb8e337.tmp.0.dr.1.dr.zip

Overview

General Information

Sample name: 38ee10f0-ac87-4c0c-9d71-65200cb8e337.tmp.0.dr.1.dr.zip
Analysis ID: 1562189
MD5: c8d64c4bf48d060b7846bf784a3ed8e6
SHA1: 6c70e7f472d32b1a87a65d813d1b8dd912c8e5ae
SHA256: 0f916bceb39dc84ff6de87d89b0440d2ec44cf8102f806d7374fe70458820e14
Infos:

Detection

Score: 48
Range: 0 - 100
Whitelisted: false
Confidence: 100%

Signatures

Yara detected ZipBomb
Allocates memory with a write watch (potentially for evading sandboxes)
Contains long sleeps (>= 3 min)
Creates a process in suspended mode (likely to inject code)
May sleep (evasive loops) to hinder dynamic analysis

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
Source: classification engine Classification label: mal48.evad.winZIP@4/2@0/0
Source: C:\Windows\SysWOW64\unarchiver.exe Mutant created: NULL
Source: C:\Windows\System32\conhost.exe Mutant created: \Sessions\1\BaseNamedObjects\Local\SM0:7512:120: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\38ee10f0-ac87-4c0c-9d71-65200cb8e337.tmp.0.dr.1.dr.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\u0djtksr.ouv" "C:\Users\user\Desktop\38ee10f0-ac87-4c0c-9d71-65200cb8e337.tmp.0.dr.1.dr.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\u0djtksr.ouv" "C:\Users\user\Desktop\38ee10f0-ac87-4c0c-9d71-65200cb8e337.tmp.0.dr.1.dr.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

Malware Analysis System Evasion
barindex
Yara detected ZipBomb
Source: Yara match File source: 38ee10f0-ac87-4c0c-9d71-65200cb8e337.tmp.0.dr.1.dr, type: SAMPLE
Source: Yara match File source: C:\Users\user\AppData\Local\Temp\u0djtksr.ouv\38ee10f0-ac87-4c0c-9d71-65200cb8e337.tmp.0.dr.1.dr, type: DROPPED
Allocates memory with a write watch (potentially for evading sandboxes)
Source: C:\Windows\SysWOW64\unarchiver.exe Memory allocated: A50000 memory reserve | memory write watch Jump to behavior
Source: C:\Windows\SysWOW64\unarchiver.exe Memory allocated: 26E0000 memory reserve | memory write watch Jump to behavior
Source: C:\Windows\SysWOW64\unarchiver.exe Memory allocated: 46E0000 memory commit | memory reserve | memory write watch Jump to behavior
Contains long sleeps (>= 3 min)
Source: C:\Windows\SysWOW64\unarchiver.exe Thread delayed: delay time: 922337203685477 Jump to behavior
May sleep (evasive loops) to hinder dynamic analysis
Source: C:\Windows\SysWOW64\unarchiver.exe TID: 7500 Thread sleep time: -922337203685477s >= -30000s Jump to behavior
Source: C:\Windows\SysWOW64\unarchiver.exe Thread delayed: delay time: 922337203685477 Jump to behavior
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\u0djtksr.ouv" "C:\Users\user\Desktop\38ee10f0-ac87-4c0c-9d71-65200cb8e337.tmp.0.dr.1.dr.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:

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  • Visual Basic
  • Delphi
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  • .Net C# or VB.NET
  • C, C++ or other language
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  • Internet
behaviorgraph top1 signatures2 2 Behavior Graph ID: 1562189 Sample: 38ee10f0-ac87-4c0c-9d71-652... Startdate: 25/11/2024 Architecture: WINDOWS Score: 48 16 Yara detected ZipBomb 2->16 7 unarchiver.exe 4 2->7         started        process3 process4 9 7za.exe 2 7->9         started        file5 14 38ee10f0-ac87-4c0c...8e337.tmp.0.dr.1.dr, Zip 9->14 dropped 12 conhost.exe 9->12         started        process6
⊘No contacted IP infos