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Windows Analysis Report
MDE_File_Sample_bcdc0b75df7c481568c48ae5a8f1d75305b5fc22.zip

Overview

General Information

Sample name:MDE_File_Sample_bcdc0b75df7c481568c48ae5a8f1d75305b5fc22.zip
Analysis ID:1711311
Has dependencies:false
MD5:6c264b8794b0eb630444f336a6cccd1e
SHA1:b4189f79e6d3856f9379e347435ddfa1ad0233ae
SHA256:43f1d1092d73dced0efd5a8af9ed97402300b6f642393283cf4b3928282e2ba3
Infos:

Detection

Score:2
Range:0 - 100
Confidence:60%

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

Classification

  • System is w10x64
  • unarchiver.exe (PID: 4496 cmdline: "C:\Windows\SysWow64\unarchiver.exe" "C:\Users\user\Desktop\MDE_File_Sample_bcdc0b75df7c481568c48ae5a8f1d75305b5fc22.zip" MD5: 16FF3CC6CC330A08EED70CBC1D35F5D2)
    • 7za.exe (PID: 5672 cmdline: "C:\Windows\System32\7za.exe" x -pinfected -y -o"C:\Users\user\AppData\Local\Temp\4o4mctv4.ggf" "C:\Users\user\Desktop\MDE_File_Sample_bcdc0b75df7c481568c48ae5a8f1d75305b5fc22.zip" MD5: 77E556CDFDC5C592F5C46DB4127C6F4C)
      • conhost.exe (PID: 5300 cmdline: C:\Windows\system32\conhost.exe 0xffffffff -ForceV1 MD5: 0D698AF330FD17BEE3BF90011D49251D)
  • cleanup
No reasoning have been found
No configs have been found
No yara matches
No Sigma rule has matched
No Suricata rule has matched

Click to jump to signature section

Show All Signature Results

There are no malicious signatures, click here to show all signatures.

Source: C:\Windows\SysWOW64\unarchiver.exeFile opened: C:\Windows\WinSxS\x86_microsoft.vc80.crt_1fc8b3b9a1e18e3b_8.0.50727.9672_none_d08f9da24428a513\MSVCR80.dllJump to behavior
Source: classification engineClassification label: clean2.winZIP@4/1@0/0
Source: C:\Windows\SysWOW64\unarchiver.exeMutant created: NULL
Source: C:\Windows\System32\conhost.exeMutant created: \Sessions\1\BaseNamedObjects\Local\SM0:5300:120:WilError_03
Source: C:\Windows\SysWOW64\unarchiver.exeFile created: C:\Users\user\AppData\Local\Temp\unarchiver.logJump to behavior
Source: C:\Windows\SysWOW64\unarchiver.exeKey opened: HKEY_CURRENT_USER\Software\Policies\Microsoft\Windows\Safer\CodeIdentifiersJump to behavior
Source: unknownProcess created: C:\Windows\SysWOW64\unarchiver.exe "C:\Windows\SysWow64\unarchiver.exe" "C:\Users\user\Desktop\MDE_File_Sample_bcdc0b75df7c481568c48ae5a8f1d75305b5fc22.zip"
Source: C:\Windows\SysWOW64\unarchiver.exeProcess created: C:\Windows\SysWOW64\7za.exe "C:\Windows\System32\7za.exe" x -pinfected -y -o"C:\Users\user\AppData\Local\Temp\4o4mctv4.ggf" "C:\Users\user\Desktop\MDE_File_Sample_bcdc0b75df7c481568c48ae5a8f1d75305b5fc22.zip"
Source: C:\Windows\SysWOW64\7za.exeProcess created: C:\Windows\System32\conhost.exe C:\Windows\system32\conhost.exe 0xffffffff -ForceV1
Source: C:\Windows\SysWOW64\unarchiver.exeProcess created: C:\Windows\SysWOW64\7za.exe "C:\Windows\System32\7za.exe" x -pinfected -y -o"C:\Users\user\AppData\Local\Temp\4o4mctv4.ggf" "C:\Users\user\Desktop\MDE_File_Sample_bcdc0b75df7c481568c48ae5a8f1d75305b5fc22.zip"Jump to behavior
Source: C:\Windows\SysWOW64\unarchiver.exeSection loaded: mscoree.dllJump to behavior
Source: C:\Windows\SysWOW64\unarchiver.exeSection loaded: apphelp.dllJump to behavior
Source: C:\Windows\SysWOW64\unarchiver.exeSection loaded: kernel.appcore.dllJump to behavior
Source: C:\Windows\SysWOW64\unarchiver.exeSection loaded: version.dllJump to behavior
Source: C:\Windows\SysWOW64\unarchiver.exeSection loaded: windows.storage.dllJump to behavior
Source: C:\Windows\SysWOW64\unarchiver.exeSection loaded: wldp.dllJump to behavior
Source: C:\Windows\SysWOW64\unarchiver.exeSection loaded: profapi.dllJump to behavior
Source: C:\Windows\SysWOW64\unarchiver.exeSection loaded: cryptsp.dllJump to behavior
Source: C:\Windows\SysWOW64\unarchiver.exeSection loaded: rsaenh.dllJump to behavior
Source: C:\Windows\SysWOW64\unarchiver.exeSection loaded: cryptbase.dllJump to behavior
Source: C:\Windows\SysWOW64\7za.exeSection loaded: 7z.dllJump to behavior
Source: C:\Windows\SysWOW64\unarchiver.exeFile opened: C:\Windows\Microsoft.NET\Framework\v2.0.50727\mscorrc.dllJump to behavior
Source: C:\Windows\SysWOW64\unarchiver.exeFile opened: C:\Windows\WinSxS\x86_microsoft.vc80.crt_1fc8b3b9a1e18e3b_8.0.50727.9672_none_d08f9da24428a513\MSVCR80.dllJump to behavior
Source: C:\Windows\SysWOW64\unarchiver.exeProcess information set: NOOPENFILEERRORBOXJump to behavior
Source: C:\Windows\SysWOW64\unarchiver.exeProcess information set: NOOPENFILEERRORBOXJump to behavior
Source: C:\Windows\SysWOW64\unarchiver.exeProcess information set: NOOPENFILEERRORBOXJump to behavior
Source: C:\Windows\SysWOW64\unarchiver.exeProcess information set: NOOPENFILEERRORBOXJump to behavior
Source: C:\Windows\SysWOW64\unarchiver.exeProcess information set: NOOPENFILEERRORBOXJump to behavior
Source: C:\Windows\SysWOW64\unarchiver.exeProcess information set: NOOPENFILEERRORBOXJump to behavior
Source: C:\Windows\SysWOW64\unarchiver.exeProcess information set: NOOPENFILEERRORBOXJump to behavior
Source: C:\Windows\SysWOW64\unarchiver.exeProcess information set: NOOPENFILEERRORBOXJump to behavior
Source: C:\Windows\SysWOW64\unarchiver.exeProcess information set: NOOPENFILEERRORBOXJump to behavior
Source: C:\Windows\SysWOW64\unarchiver.exeProcess information set: NOOPENFILEERRORBOXJump to behavior
Source: C:\Windows\SysWOW64\unarchiver.exeProcess information set: NOOPENFILEERRORBOXJump to behavior
Source: C:\Windows\SysWOW64\unarchiver.exeProcess information set: NOOPENFILEERRORBOXJump to behavior
Source: C:\Windows\SysWOW64\unarchiver.exeProcess information set: NOOPENFILEERRORBOXJump to behavior
Source: C:\Windows\SysWOW64\unarchiver.exeProcess information set: NOOPENFILEERRORBOXJump to behavior
Source: C:\Windows\SysWOW64\unarchiver.exeProcess information set: NOOPENFILEERRORBOXJump to behavior
Source: C:\Windows\SysWOW64\unarchiver.exeProcess information set: NOOPENFILEERRORBOXJump to behavior
Source: C:\Windows\SysWOW64\unarchiver.exeProcess information set: NOOPENFILEERRORBOXJump to behavior
Source: C:\Windows\SysWOW64\unarchiver.exeMemory allocated: 13E0000 memory reserve | memory write watchJump to behavior
Source: C:\Windows\SysWOW64\unarchiver.exeMemory allocated: 2E60000 memory reserve | memory write watchJump to behavior
Source: C:\Windows\SysWOW64\unarchiver.exeMemory allocated: 4E60000 memory commit | memory reserve | memory write watchJump to behavior
Source: C:\Windows\SysWOW64\unarchiver.exeWindow / User API: threadDelayed 1776Jump to behavior
Source: C:\Windows\SysWOW64\unarchiver.exeWindow / User API: threadDelayed 8195Jump to behavior
Source: C:\Windows\SysWOW64\unarchiver.exe TID: 3460Thread sleep count: 1776 > 30Jump to behavior
Source: C:\Windows\SysWOW64\unarchiver.exe TID: 3460Thread sleep time: -888000s >= -30000sJump to behavior
Source: C:\Windows\SysWOW64\unarchiver.exe TID: 3460Thread sleep count: 8195 > 30Jump to behavior
Source: C:\Windows\SysWOW64\unarchiver.exe TID: 3460Thread sleep time: -4097500s >= -30000sJump to behavior
Source: C:\Windows\SysWOW64\unarchiver.exeMemory allocated: page read and write | page guardJump to behavior
Source: C:\Windows\SysWOW64\unarchiver.exeProcess created: C:\Windows\SysWOW64\7za.exe "C:\Windows\System32\7za.exe" x -pinfected -y -o"C:\Users\user\AppData\Local\Temp\4o4mctv4.ggf" "C:\Users\user\Desktop\MDE_File_Sample_bcdc0b75df7c481568c48ae5a8f1d75305b5fc22.zip"Jump to behavior
Source: C:\Windows\SysWOW64\unarchiver.exeKey value queried: HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Cryptography MachineGuidJump to behavior
ReconnaissanceResource DevelopmentInitial AccessExecutionPersistencePrivilege EscalationDefense EvasionCredential AccessDiscoveryLateral MovementCollectionCommand and ControlExfiltrationImpact
Gather Victim Identity InformationAcquire InfrastructureValid AccountsWindows Management Instrumentation1
DLL Side-Loading
11
Process Injection
2
Virtualization/Sandbox Evasion
OS Credential Dumping2
Virtualization/Sandbox Evasion
Remote ServicesData from Local SystemData ObfuscationExfiltration Over Other Network MediumAbuse Accessibility Features
CredentialsDomainsDefault AccountsScheduled Task/JobBoot or Logon Initialization Scripts1
DLL Side-Loading
1
Disable or Modify Tools
LSASS Memory1
Application Window Discovery
Remote Desktop ProtocolData from Removable MediaJunk DataExfiltration Over BluetoothNetwork Denial of Service
Email AddressesDNS ServerDomain AccountsAtLogon Script (Windows)Logon Script (Windows)11
Process Injection
Security Account Manager2
System Information Discovery
SMB/Windows Admin SharesData from Network Shared DriveSteganographyAutomated ExfiltrationData Encrypted for Impact
Employee NamesVirtual Private ServerLocal AccountsCronLogin HookLogin Hook1
DLL Side-Loading
NTDSSystem Network Configuration DiscoveryDistributed Component Object ModelInput CaptureProtocol ImpersonationTraffic DuplicationData Destruction
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: 1711311 Sample: MDE_File_Sample_bcdc0b75df7... Startdate: 10/06/2025 Architecture: WINDOWS Score: 2 6 unarchiver.exe 4 2->6         started        process3 8 7za.exe 2 6->8         started        process4 10 conhost.exe 8->10         started       

This section contains all screenshots as thumbnails, including those not shown in the slideshow.


windows-stand
No Antivirus matches
No Antivirus matches
No Antivirus matches
No Antivirus matches
No Antivirus matches
No contacted domains info
No contacted IP infos
Joe Sandbox version:42.0.0 Malachite
Analysis ID:1711311
Start date and time:2025-06-10 19:18:08 +02:00
Joe Sandbox product:CloudBasic
Overall analysis duration:0h 4m 1s
Hypervisor based Inspection enabled:false
Report type:full
Cookbook file name:default.jbs
Analysis system description:Windows 10 x64 22H2 with Office Professional Plus 2019, Chrome 134, Firefox 118, Adobe Reader DC 23, Java 8 Update 381, 7zip 23.01
Number of analysed new started processes analysed:13
Number of new started drivers analysed:0
Number of existing processes analysed:0
Number of existing drivers analysed:0
Number of injected processes analysed:0
Technologies:
  • EGA enabled
  • AMSI enabled
Analysis Mode:default
Analysis stop reason:Timeout
Sample name:MDE_File_Sample_bcdc0b75df7c481568c48ae5a8f1d75305b5fc22.zip
Detection:CLEAN
Classification:clean2.winZIP@4/1@0/0
Cookbook Comments:
  • Found application associated with file extension: .zip
  • Exclude process from analysis (whitelisted): MpCmdRun.exe, sppsvc.exe, SIHClient.exe, SgrmBroker.exe, conhost.exe, svchost.exe
  • Excluded IPs from analysis (whitelisted): 23.205.30.159
  • Excluded domains from analysis (whitelisted): a-ring-fallback.msedge.net, fs.microsoft.com, slscr.update.microsoft.com, ctldl.windowsupdate.com, c.pki.goog, fe3cr.delivery.mp.microsoft.com
  • Not all processes where analyzed, report is missing behavior information
  • Report size getting too big, too many NtQueryValueKey calls found.
TimeTypeDescription
13:19:39API Interceptor1283054x Sleep call for process: unarchiver.exe modified
No context
No context
No context
No context
No context
Process:C:\Windows\SysWOW64\unarchiver.exe
File Type:ASCII text, with CRLF line terminators
Category:dropped
Size (bytes):2612
Entropy (8bit):5.124826243774449
Encrypted:false
SSDEEP:48:HEb3+aGbXGXGpdGrkGXGpaGbBG1GvGuGXGXGmMGXG2GXGmJwL16SSc:kDWEI9
MD5:96295715078D7B811F61AE963C8C033C
SHA1:2182C674F49C02EDBABE015D83C19C438DAD28CC
SHA-256:2A85CA4F33D4C4A9AA7B41606BBAD60E66A096D3315F964E689165B81B40F5A0
SHA-512:82BD8D6E7D0D0B1756F6E6B6C1FCF1DA0D3E8F968B587CFD1CDFEE1915FB6FAA04D7DF7040F9B4A68D9AD7F0087B77CB2F4657B3DCD9653E68C1D614B528DF63
Malicious:false
Reputation:low
Preview:06/10/2025 1:19 PM: Unpack: C:\Users\user\Desktop\MDE_File_Sample_bcdc0b75df7c481568c48ae5a8f1d75305b5fc22.zip..06/10/2025 1:19 PM: Tmp dir: C:\Users\user\AppData\Local\Temp\4o4mctv4.ggf..06/10/2025 1:19 PM: Received from standard error: ERROR: Wrong password : bcrypt.dll..06/10/2025 1:19 PM: Received from standard out: 7-Zip 18.05 (x86) : Copyright (c) 1999-2018 Igor Pavlov : 2018-04-30..06/10/2025 1:19 PM: Received from standard out: ..06/10/2025 1:19 PM: Received from standard out: Scanning the drive for archives:..06/10/2025 1:19 PM: Received from standard out: 1 file, 74704 bytes (73 KiB)..06/10/2025 1:19 PM: Received from standard out: ..06/10/2025 1:19 PM: Received from standard out: Extracting archive: C:\Users\user\Desktop\MDE_File_Sample_bcdc0b75df7c481568c48ae5a8f1d75305b5fc22.zip..06/10/2025 1:19 PM: Received from standard out: --..06/10/2025 1:19 PM: Received from standard out: Path = C:\Users\user\Desktop\MDE_File_Sample_bcdc0b75df7c481568c48ae5a8f1d75305b5fc22.zip..0
File type:Zip archive data, at least v2.0 to extract, compression method=deflate
Entropy (8bit):7.997528782333316
TrID:
  • ZIP compressed archive (8000/1) 100.00%
File name:MDE_File_Sample_bcdc0b75df7c481568c48ae5a8f1d75305b5fc22.zip
File size:74'704 bytes
MD5:6c264b8794b0eb630444f336a6cccd1e
SHA1:b4189f79e6d3856f9379e347435ddfa1ad0233ae
SHA256:43f1d1092d73dced0efd5a8af9ed97402300b6f642393283cf4b3928282e2ba3
SHA512:7fbdf18bc49ffb16149a1d4bd1c935929024de4b8164269df3faa1ca3af30bcbd5f94f982da79513879028256e3a9179fc0535db632eba1230a4f2f5025d4b0b
SSDEEP:1536:ta1K81bmAwOmHJgqtavbbJokmC16vMaFvpUlUiyPqApEhJwHD00:Q1K8Nz5gJLe1okm/Bv7VPqAmhJv0
TLSH:987312C3D0A379569E6D0B36C8004A144C3E9EC45B223F26D755E37324AD8BFA0AD6ED
File Content Preview:PK...........ZI....#..p.....$.bcrypt.dll.. .............+.......+.......+.......R...f].,]...c..l...H..t.<V....6.M.%..jo.n..so....\...a.n...*.fq.5..-..X.d...W%.v/$....A..4.F.]../.....U.Q.v\..Rp.....'....>.R.6....-s.'+.......Jg....S......[`........{..3....E
Icon Hash:90cececece8e8eb0
No network behavior found

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Target ID:0
Start time:13:19:05
Start date:10/06/2025
Path:C:\Windows\SysWOW64\unarchiver.exe
Wow64 process (32bit):true
Commandline:"C:\Windows\SysWow64\unarchiver.exe" "C:\Users\user\Desktop\MDE_File_Sample_bcdc0b75df7c481568c48ae5a8f1d75305b5fc22.zip"
Imagebase:0x890000
File size:12'800 bytes
MD5 hash:16FF3CC6CC330A08EED70CBC1D35F5D2
Has elevated privileges:true
Has administrator privileges:true
Programmed in:C, C++ or other language
Reputation:high
Has exited:false

Target ID:1
Start time:13:19:05
Start date:10/06/2025
Path:C:\Windows\SysWOW64\7za.exe
Wow64 process (32bit):true
Commandline:"C:\Windows\System32\7za.exe" x -pinfected -y -o"C:\Users\user\AppData\Local\Temp\4o4mctv4.ggf" "C:\Users\user\Desktop\MDE_File_Sample_bcdc0b75df7c481568c48ae5a8f1d75305b5fc22.zip"
Imagebase:0x680000
File size:289'792 bytes
MD5 hash:77E556CDFDC5C592F5C46DB4127C6F4C
Has elevated privileges:true
Has administrator privileges:true
Programmed in:C, C++ or other language
Reputation:high
Has exited:true

Target ID:2
Start time:13:19:06
Start date:10/06/2025
Path:C:\Windows\System32\conhost.exe
Wow64 process (32bit):false
Commandline:C:\Windows\system32\conhost.exe 0xffffffff -ForceV1
Imagebase:0x7ff62fc20000
File size:862'208 bytes
MD5 hash:0D698AF330FD17BEE3BF90011D49251D
Has elevated privileges:true
Has administrator privileges:true
Programmed in:C, C++ or other language
Reputation:high
Has exited:true

No disassembly