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Windows Analysis Report
antiunpack_norm01_upx.exe

Overview

General Information

Sample name:antiunpack_norm01_upx.exe
Analysis ID:1592452
MD5:6516298cb80c3c4fc4d23a792ad647d8
SHA1:3e198036ab2b1bcd9384bcd5670ad8390114ea4a
SHA256:b5ca4b3b318823ed414fca0b0d2aeda2954afd6a0f72eea76c02947a86a301c4
Infos:

Detection

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

Signatures

AI detected suspicious sample
PE file has nameless sections
Detected non-DNS traffic on DNS port
PE file contains sections with non-standard names
Sample execution stops while process was sleeping (likely an evasion)
Tries to resolve domain names, but no domain seems valid (expired dropper behavior)

Classification

  • System is w10x64
  • antiunpack_norm01_upx.exe (PID: 7308 cmdline: "C:\Users\user\Desktop\antiunpack_norm01_upx.exe" MD5: 6516298CB80C3C4FC4D23A792AD647D8)
    • conhost.exe (PID: 7316 cmdline: C:\Windows\system32\conhost.exe 0xffffffff -ForceV1 MD5: 0D698AF330FD17BEE3BF90011D49251D)
  • cleanup
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

AV Detection

barindex
Source: Submited SampleIntegrated Neural Analysis Model: Matched 99.9% probability
Source: antiunpack_norm01_upx.exeStatic PE information: HIGH_ENTROPY_VA, DYNAMIC_BASE, NX_COMPAT
Source: global trafficTCP traffic: 192.168.2.4:65042 -> 162.159.36.2:53
Source: unknownDNS traffic detected: query: 171.39.242.20.in-addr.arpa replaycode: Name error (3)
Source: unknownTCP traffic detected without corresponding DNS query: 162.159.36.2
Source: unknownTCP traffic detected without corresponding DNS query: 162.159.36.2
Source: unknownTCP traffic detected without corresponding DNS query: 162.159.36.2
Source: unknownTCP traffic detected without corresponding DNS query: 162.159.36.2
Source: unknownUDP traffic detected without corresponding DNS query: 1.1.1.1
Source: global trafficDNS traffic detected: DNS query: 171.39.242.20.in-addr.arpa

System Summary

barindex
Source: antiunpack_norm01_upx.exeStatic PE information: section name:
Source: antiunpack_norm01_upx.exeStatic PE information: section name:
Source: antiunpack_norm01_upx.exeStatic PE information: section name:
Source: classification engineClassification label: mal48.winEXE@2/0@1/0
Source: C:\Windows\System32\conhost.exeMutant created: \Sessions\1\BaseNamedObjects\Local\SM0:7316:120:WilError_03
Source: C:\Users\user\Desktop\antiunpack_norm01_upx.exeKey opened: HKEY_LOCAL_MACHINE\Software\Policies\Microsoft\Windows\Safer\CodeIdentifiersJump to behavior
Source: unknownProcess created: C:\Users\user\Desktop\antiunpack_norm01_upx.exe "C:\Users\user\Desktop\antiunpack_norm01_upx.exe"
Source: C:\Users\user\Desktop\antiunpack_norm01_upx.exeProcess created: C:\Windows\System32\conhost.exe C:\Windows\system32\conhost.exe 0xffffffff -ForceV1
Source: C:\Users\user\Desktop\antiunpack_norm01_upx.exeSection loaded: apphelp.dllJump to behavior
Source: C:\Users\user\Desktop\antiunpack_norm01_upx.exeSection loaded: libgcc_s_seh-1.dllJump to behavior
Source: C:\Users\user\Desktop\antiunpack_norm01_upx.exeSection loaded: libstdc++-6.dllJump to behavior
Source: antiunpack_norm01_upx.exeStatic PE information: Image base 0x140000000 > 0x60000000
Source: antiunpack_norm01_upx.exeStatic PE information: HIGH_ENTROPY_VA, DYNAMIC_BASE, NX_COMPAT
Source: antiunpack_norm01_upx.exeStatic PE information: section name:
Source: antiunpack_norm01_upx.exeStatic PE information: section name:
Source: antiunpack_norm01_upx.exeStatic PE information: section name:
Source: antiunpack_norm01_upx.exeStatic PE information: section name: entropy: 7.838183543535868
Source: C:\Windows\System32\conhost.exeLast function: Thread delayed
ReconnaissanceResource DevelopmentInitial AccessExecutionPersistencePrivilege EscalationDefense EvasionCredential AccessDiscoveryLateral MovementCollectionCommand and ControlExfiltrationImpact
Gather Victim Identity InformationAcquire InfrastructureValid AccountsWindows Management Instrumentation1
DLL Side-Loading
1
Process Injection
1
Software Packing
OS Credential Dumping1
System Information Discovery
Remote ServicesData from Local System1
Non-Application Layer Protocol
Exfiltration Over Other Network MediumAbuse Accessibility Features
CredentialsDomainsDefault AccountsScheduled Task/JobBoot or Logon Initialization Scripts1
DLL Side-Loading
1
Process Injection
LSASS MemoryApplication Window DiscoveryRemote Desktop ProtocolData from Removable Media1
Application Layer Protocol
Exfiltration Over BluetoothNetwork Denial of Service
Email AddressesDNS ServerDomain AccountsAtLogon Script (Windows)Logon Script (Windows)1
DLL Side-Loading
Security Account ManagerQuery RegistrySMB/Windows Admin SharesData from Network Shared DriveSteganographyAutomated ExfiltrationData Encrypted for Impact
Employee NamesVirtual Private ServerLocal AccountsCronLogin HookLogin Hook1
Obfuscated Files or Information
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 dnsIp2 2 Behavior Graph ID: 1592452 Sample: antiunpack_norm01_upx.exe Startdate: 16/01/2025 Architecture: WINDOWS Score: 48 11 171.39.242.20.in-addr.arpa 2->11 13 PE file has nameless sections 2->13 15 AI detected suspicious sample 2->15 7 antiunpack_norm01_upx.exe 1 2->7         started        signatures3 process4 process5 9 conhost.exe 7->9         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
NameIPActiveMaliciousAntivirus DetectionReputation
171.39.242.20.in-addr.arpa
unknown
unknownfalse
    high
    No contacted IP infos
    Joe Sandbox version:42.0.0 Malachite
    Analysis ID:1592452
    Start date and time:2025-01-16 06:57:55 +01:00
    Joe Sandbox product:CloudBasic
    Overall analysis duration:0h 3m 41s
    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 117, Firefox 118, Adobe Reader DC 23, Java 8 Update 381, 7zip 23.01
    Number of analysed new started processes analysed:6
    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:antiunpack_norm01_upx.exe
    Detection:MAL
    Classification:mal48.winEXE@2/0@1/0
    Cookbook Comments:
    • Found application associated with file extension: .exe
    • Exclude process from analysis (whitelisted): MpCmdRun.exe, WMIADAP.exe, SIHClient.exe, conhost.exe
    • Excluded IPs from analysis (whitelisted): 4.175.87.197, 20.242.39.171, 20.109.210.53, 13.107.246.45
    • Excluded domains from analysis (whitelisted): ocsp.digicert.com, slscr.update.microsoft.com, otelrules.azureedge.net, ctldl.windowsupdate.com, fe3cr.delivery.mp.microsoft.com
    • Not all processes where analyzed, report is missing behavior information
    No simulations
    No context
    No context
    No context
    No context
    No context
    No created / dropped files found
    File type:PE32+ executable (console) x86-64, for MS Windows
    Entropy (8bit):5.94467651586762
    TrID:
    • Win64 Executable Console (202006/5) 92.65%
    • Win64 Executable (generic) (12005/4) 5.51%
    • Generic Win/DOS Executable (2004/3) 0.92%
    • DOS Executable Generic (2002/1) 0.92%
    • Autodesk FLIC Image File (extensions: flc, fli, cel) (7/3) 0.00%
    File name:antiunpack_norm01_upx.exe
    File size:58'287 bytes
    MD5:6516298cb80c3c4fc4d23a792ad647d8
    SHA1:3e198036ab2b1bcd9384bcd5670ad8390114ea4a
    SHA256:b5ca4b3b318823ed414fca0b0d2aeda2954afd6a0f72eea76c02947a86a301c4
    SHA512:96b140a81491ede4a668d6292691a7600fec919eee75c93c0da0359aa6ce28cbb5c20c4c9b5027d167879c2dcf34b6430a0bdc1a9b523de5958d5f4ce48a0e4f
    SSDEEP:1536:vx6V4Qkwfs13BzUlmEPHbxe+yIS7TUcWGo9Kdze4B1PK:vx6VffW3BzUlLxbgdze4B1PK
    TLSH:9B4350D07AE85C86EA68577D4196D222263DFAE087534B435A307A324F13EC27DC372E
    File Content Preview:MZ......................@...............................................!..L.!This program cannot be run in DOS mode....$.......PE..d...DLYg..........&....*.`.......@.......P.....@..........................................`... ............................
    Icon Hash:90cececece8e8eb0
    Entrypoint:0x14001a380
    Entrypoint Section:
    Digitally signed:false
    Imagebase:0x140000000
    Subsystem:windows cui
    Image File Characteristics:EXECUTABLE_IMAGE, LINE_NUMS_STRIPPED, LARGE_ADDRESS_AWARE
    DLL Characteristics:HIGH_ENTROPY_VA, DYNAMIC_BASE, NX_COMPAT
    Time Stamp:0x67594C44 [Wed Dec 11 08:24:36 2024 UTC]
    TLS Callbacks:0x4001a5e0, 0x1
    CLR (.Net) Version:
    OS Version Major:4
    OS Version Minor:0
    File Version Major:4
    File Version Minor:0
    Subsystem Version Major:4
    Subsystem Version Minor:0
    Import Hash:13481171c20f76fa96fc0e8f73152e78
    Instruction
    push ebx
    push esi
    push edi
    push ebp
    dec eax
    lea esi, dword ptr [FFFFAC9Ah]
    dec eax
    lea edi, dword ptr [esi-00014025h]
    push edi
    xor ebx, ebx
    xor ecx, ecx
    dec eax
    or ebp, FFFFFFFFh
    call 00007F968C876B75h
    add ebx, ebx
    je 00007F968C876B24h
    rep ret
    mov ebx, dword ptr [esi]
    dec eax
    sub esi, FFFFFFFCh
    adc ebx, ebx
    mov dl, byte ptr [esi]
    rep ret
    dec eax
    lea eax, dword ptr [edi+ebp]
    cmp ecx, 05h
    mov dl, byte ptr [eax]
    jbe 00007F968C876B43h
    dec eax
    cmp ebp, FFFFFFFCh
    jnbe 00007F968C876B3Dh
    sub ecx, 04h
    mov edx, dword ptr [eax]
    dec eax
    add eax, 04h
    sub ecx, 04h
    mov dword ptr [edi], edx
    dec eax
    lea edi, dword ptr [edi+04h]
    jnc 00007F968C876B11h
    add ecx, 04h
    mov dl, byte ptr [eax]
    je 00007F968C876B32h
    dec eax
    inc eax
    mov byte ptr [edi], dl
    sub ecx, 01h
    mov dl, byte ptr [eax]
    dec eax
    lea edi, dword ptr [edi+01h]
    jne 00007F968C876B12h
    rep ret
    cld
    inc ecx
    pop ebx
    jmp 00007F968C876B2Ah
    dec eax
    inc esi
    mov byte ptr [edi], dl
    dec eax
    inc edi
    mov dl, byte ptr [esi]
    add ebx, ebx
    jne 00007F968C876B2Ch
    mov ebx, dword ptr [esi]
    dec eax
    sub esi, FFFFFFFCh
    adc ebx, ebx
    mov dl, byte ptr [esi]
    jc 00007F968C876B08h
    lea eax, dword ptr [ecx+01h]
    inc ecx
    call ebx
    adc eax, eax
    add ebx, ebx
    jne 00007F968C876B2Ch
    mov ebx, dword ptr [esi]
    dec eax
    sub esi, FFFFFFFCh
    adc ebx, ebx
    mov dl, byte ptr [esi]
    jnc 00007F968C876B0Dh
    sub eax, 03h
    jc 00007F968C876B35h
    shl eax, 08h
    movzx edx, dl
    or eax, edx
    dec eax
    inc esi
    xor eax, FFFFFFFFh
    je 00007F968C876B5Ch
    dec eax
    arpl ax, bp
    lea eax, dword ptr [ecx+01h]
    inc ecx
    call ebx
    adc ecx, ecx
    NameVirtual AddressVirtual Size Is in Section
    IMAGE_DIRECTORY_ENTRY_EXPORT0x00x0
    IMAGE_DIRECTORY_ENTRY_IMPORT0x1b0000x15c
    IMAGE_DIRECTORY_ENTRY_RESOURCE0x00x0
    IMAGE_DIRECTORY_ENTRY_EXCEPTION0xa0000x48c
    IMAGE_DIRECTORY_ENTRY_SECURITY0x00x0
    IMAGE_DIRECTORY_ENTRY_BASERELOC0x1b15c0x14
    IMAGE_DIRECTORY_ENTRY_DEBUG0x00x0
    IMAGE_DIRECTORY_ENTRY_COPYRIGHT0x00x0
    IMAGE_DIRECTORY_ENTRY_GLOBALPTR0x00x0
    IMAGE_DIRECTORY_ENTRY_TLS0x1a6080x28
    IMAGE_DIRECTORY_ENTRY_LOAD_CONFIG0x00x0
    IMAGE_DIRECTORY_ENTRY_BOUND_IMPORT0x00x0
    IMAGE_DIRECTORY_ENTRY_IAT0x00x0
    IMAGE_DIRECTORY_ENTRY_DELAY_IMPORT0x00x0
    IMAGE_DIRECTORY_ENTRY_COM_DESCRIPTOR0x00x0
    IMAGE_DIRECTORY_ENTRY_RESERVED0x00x0
    NameVirtual AddressVirtual SizeRaw SizeMD5Xored PEZLIB ComplexityFile TypeEntropyCharacteristics
    0x10000x140000x0d41d8cd98f00b204e9800998ecf8427eFalse0empty0.0IMAGE_SCN_CNT_UNINITIALIZED_DATA, IMAGE_SCN_MEM_EXECUTE, IMAGE_SCN_MEM_READ, IMAGE_SCN_MEM_WRITE
    0x150000x60000x5800f14a0bd78ebe9ec2fbc232a73d350267False0.9696821732954546data7.838183543535868IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_MEM_EXECUTE, IMAGE_SCN_MEM_READ, IMAGE_SCN_MEM_WRITE
    0x1b0000x10000x200a623955948e8afc09ad155cec4aecd8bFalse0.427734375data2.97686195953879IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_MEM_READ, IMAGE_SCN_MEM_WRITE
    DLLImport
    KERNEL32.DLLLoadLibraryA, ExitProcess, GetProcAddress, VirtualProtect
    libgcc_s_seh-1.dll_Unwind_Resume
    libstdc++-6.dll__cxa_throw
    msvcrt.dllexit
    TimestampSource PortDest PortSource IPDest IP
    Jan 16, 2025 06:59:24.776737928 CET6504253192.168.2.4162.159.36.2
    Jan 16, 2025 06:59:24.781649113 CET5365042162.159.36.2192.168.2.4
    Jan 16, 2025 06:59:24.781738997 CET6504253192.168.2.4162.159.36.2
    Jan 16, 2025 06:59:24.786880016 CET5365042162.159.36.2192.168.2.4
    Jan 16, 2025 06:59:25.253838062 CET6504253192.168.2.4162.159.36.2
    Jan 16, 2025 06:59:25.259008884 CET5365042162.159.36.2192.168.2.4
    Jan 16, 2025 06:59:25.259071112 CET6504253192.168.2.4162.159.36.2
    TimestampSource PortDest PortSource IPDest IP
    Jan 16, 2025 06:59:24.776190042 CET5362166162.159.36.2192.168.2.4
    Jan 16, 2025 06:59:25.290111065 CET6508853192.168.2.41.1.1.1
    Jan 16, 2025 06:59:25.297775984 CET53650881.1.1.1192.168.2.4
    TimestampSource IPDest IPTrans IDOP CodeNameTypeClassDNS over HTTPS
    Jan 16, 2025 06:59:25.290111065 CET192.168.2.41.1.1.10x5e78Standard query (0)171.39.242.20.in-addr.arpaPTR (Pointer record)IN (0x0001)false
    TimestampSource IPDest IPTrans IDReply CodeNameCNameAddressTypeClassDNS over HTTPS
    Jan 16, 2025 06:59:25.297775984 CET1.1.1.1192.168.2.40x5e78Name error (3)171.39.242.20.in-addr.arpanonenonePTR (Pointer record)IN (0x0001)false

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    Target ID:0
    Start time:00:58:52
    Start date:16/01/2025
    Path:C:\Users\user\Desktop\antiunpack_norm01_upx.exe
    Wow64 process (32bit):false
    Commandline:"C:\Users\user\Desktop\antiunpack_norm01_upx.exe"
    Imagebase:0x7ff7c6990000
    File size:58'287 bytes
    MD5 hash:6516298CB80C3C4FC4D23A792AD647D8
    Has elevated privileges:true
    Has administrator privileges:true
    Programmed in:C, C++ or other language
    Reputation:low
    Has exited:false

    Target ID:1
    Start time:00:58:52
    Start date:16/01/2025
    Path:C:\Windows\System32\conhost.exe
    Wow64 process (32bit):false
    Commandline:C:\Windows\system32\conhost.exe 0xffffffff -ForceV1
    Imagebase:0x7ff7699e0000
    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:false

    No disassembly