Analysis

  • max time kernel
    122s
  • max time network
    150s
  • platform
    windows7_x64
  • resource
    win7-20230831-en
  • resource tags

    arch:x64arch:x86image:win7-20230831-enlocale:en-usos:windows7-x64system
  • submitted
    20/10/2023, 10:33

General

  • Target

    美洽6.9.7.exe

  • Size

    76.8MB

  • MD5

    f906902a7970d66ec823444808fb8610

  • SHA1

    e352be78393bc978041d8923f72d74b9e53c0a1d

  • SHA256

    e2da625d78cd27f539bd21dbfcbf1f12c3dab7320342bc5168c8d25cf665033c

  • SHA512

    992b6c0dcc8911e5f12b3b42a9c439654cc7ff5a795398da25c56419d34a1ec4361e54c8e637552e2c98c109c6379ce2f1b95994ce7c4ceebd7db45efe9af02b

  • SSDEEP

    1572864:yIC/ls2gHnOvm83ucVTyy9G6nqsDuXgsj2DarbpDNny3AGtoV8:A+vWf3tVTy9ApsCerbFRywNV8

Malware Config

Signatures

  • Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs 1 IoCs
  • Downloads MZ/PE file
  • Executes dropped EXE 4 IoCs
  • Identifies Wine through registry keys 2 TTPs 1 IoCs

    Wine is a compatibility layer capable of running Windows applications, which can be used as sandboxing environment.

  • Loads dropped DLL 3 IoCs
  • UPX packed file 3 IoCs

    Detects executables packed with UPX/modified UPX open source packer.

  • Adds Run key to start application 2 TTPs 2 IoCs
  • Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs
  • Suspicious use of SetThreadContext 2 IoCs
  • Drops file in Program Files directory 64 IoCs
  • Drops file in Windows directory 4 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • Checks processor information in registry 2 TTPs 2 IoCs

    Processor information is often read in order to detect sandboxing environments.

  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of SetWindowsHookEx 6 IoCs
  • Suspicious use of WriteProcessMemory 29 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\美洽6.9.7.exe
    "C:\Users\Admin\AppData\Local\Temp\美洽6.9.7.exe"
    1⤵
    • Loads dropped DLL
    • Drops file in Program Files directory
    • Suspicious use of WriteProcessMemory
    PID:2700
    • C:\Program Files (x86)\a3.exe
      "C:\Program Files (x86)\a3.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious use of NtSetInformationThreadHideFromDebugger
      • Drops file in Windows directory
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of SetWindowsHookEx
      PID:2764
  • C:\Users\Public\Documents\123\PTvrst.exe
    "C:\Users\Public\Documents\123\PTvrst.exe"
    1⤵
    • Identifies VirtualBox via ACPI registry values (likely anti-VM)
    • Executes dropped EXE
    • Identifies Wine through registry keys
    • Loads dropped DLL
    • Adds Run key to start application
    • Suspicious use of NtSetInformationThreadHideFromDebugger
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:2696
    • C:\WINDOWS\DNomb\spolsvt.exe
      C:\WINDOWS\DNomb\spolsvt.exe
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Adds Run key to start application
      • Suspicious use of SetThreadContext
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:584
      • C:\Users\Public\Documents\t\spolsvt.exe
        C:\Users\Public\Documents\t\spolsvt.exe
        3⤵
        • Executes dropped EXE
        • Checks processor information in registry
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:1268

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Program Files (x86)\a3.exe

    Filesize

    4.5MB

    MD5

    aa08859dc29edbf17138f7eb5088bd35

    SHA1

    99e2c0373a288b90d1528e37f43436e6746a5e62

    SHA256

    10aa0c53566887d4fb60734102b02cd546d7b46769b2a1217ebc59572b55538b

    SHA512

    23cd2d6c540bf916d0afca9a53d10d90c714e095e67faa6688110f9207dd243857f36a299210c4bf0ba16491fbd48627d6783339f576ee2124c5f4edb0b865d1

  • C:\Program Files (x86)\a3.exe

    Filesize

    4.5MB

    MD5

    aa08859dc29edbf17138f7eb5088bd35

    SHA1

    99e2c0373a288b90d1528e37f43436e6746a5e62

    SHA256

    10aa0c53566887d4fb60734102b02cd546d7b46769b2a1217ebc59572b55538b

    SHA512

    23cd2d6c540bf916d0afca9a53d10d90c714e095e67faa6688110f9207dd243857f36a299210c4bf0ba16491fbd48627d6783339f576ee2124c5f4edb0b865d1

  • C:\Users\Public\Documents\123\PTvrst.exe

    Filesize

    1.2MB

    MD5

    d22cfb5bfaeb1503b12b07e53ef0a149

    SHA1

    8ea2c85e363f551a159fabd65377affed4e417a1

    SHA256

    260464fb05210cfb30ef7a12d568f75eb781634b251d958cae8911948f6ca360

    SHA512

    151024cb2960b1ee485ded7ccbb753fe368a93fda5699af72e568667fa54bfb0d1732444e7b60efaab6d372204157cdb6abbf8862d0e89d612dd963342215e45

  • C:\Users\Public\Documents\123\PTvrst.exe

    Filesize

    1.2MB

    MD5

    d22cfb5bfaeb1503b12b07e53ef0a149

    SHA1

    8ea2c85e363f551a159fabd65377affed4e417a1

    SHA256

    260464fb05210cfb30ef7a12d568f75eb781634b251d958cae8911948f6ca360

    SHA512

    151024cb2960b1ee485ded7ccbb753fe368a93fda5699af72e568667fa54bfb0d1732444e7b60efaab6d372204157cdb6abbf8862d0e89d612dd963342215e45

  • C:\Users\Public\Documents\t\spolsvt.exe

    Filesize

    16KB

    MD5

    cdce4713e784ae069d73723034a957ff

    SHA1

    9a393a6bab6568f1a774fb753353223f11367e09

    SHA256

    b29e48102ecb3d3614e8980a8b8cc63dd2b993c6346f466479244ec2b47b69d8

    SHA512

    0a3a59a305cc2a6fad4e1315b0bcc5a4129595dfe1e8b703363fa02528d2d7c48d3fd22d365708be84a5557cf1916873df9563c454732f93f94a66e7e3b9fb0f

  • C:\Users\Public\Documents\t\spolsvt.exe

    Filesize

    16KB

    MD5

    cdce4713e784ae069d73723034a957ff

    SHA1

    9a393a6bab6568f1a774fb753353223f11367e09

    SHA256

    b29e48102ecb3d3614e8980a8b8cc63dd2b993c6346f466479244ec2b47b69d8

    SHA512

    0a3a59a305cc2a6fad4e1315b0bcc5a4129595dfe1e8b703363fa02528d2d7c48d3fd22d365708be84a5557cf1916873df9563c454732f93f94a66e7e3b9fb0f

  • C:\WINDOWS\DNomb\Mpec.mbt

    Filesize

    488KB

    MD5

    b080a7a33830f264ce71c2d4fc6cbed5

    SHA1

    3e2ac32e40441a059f24cb1bec27c1ef533641ae

    SHA256

    490acedca10ec4e45ca5cc26fcaf49f40358ae3edd413597cecccaab801ff982

    SHA512

    2d424f0901af4d787aaa2f8319de174ef3b386848bca3e72279f567d329afc570007680f54b551f5072c996a7323062ba1aaa3a04a54786dc6791660587f9c6b

  • C:\WINDOWS\DNomb\spolsvt.exe

    Filesize

    9KB

    MD5

    523d5c39f9d8d2375c3df68251fa2249

    SHA1

    d4ed365c44bec9246fc1a65a32a7791792647a10

    SHA256

    20e3dc90a3e83b6202e2a7f4603b60e5e859639cb68693426c400b13aaeabd78

    SHA512

    526e1bba30d03f1ac177c6ab7409187a730969c429cebef15da68ffcf44b3b93227781eebc827b2f7a0fa17c391e00a0e532263fd0167aeaeb0456f96cfe3ae4

  • C:\Windows\DNomb\spolsvt.exe

    Filesize

    9KB

    MD5

    523d5c39f9d8d2375c3df68251fa2249

    SHA1

    d4ed365c44bec9246fc1a65a32a7791792647a10

    SHA256

    20e3dc90a3e83b6202e2a7f4603b60e5e859639cb68693426c400b13aaeabd78

    SHA512

    526e1bba30d03f1ac177c6ab7409187a730969c429cebef15da68ffcf44b3b93227781eebc827b2f7a0fa17c391e00a0e532263fd0167aeaeb0456f96cfe3ae4

  • \Program Files (x86)\a3.exe

    Filesize

    4.5MB

    MD5

    aa08859dc29edbf17138f7eb5088bd35

    SHA1

    99e2c0373a288b90d1528e37f43436e6746a5e62

    SHA256

    10aa0c53566887d4fb60734102b02cd546d7b46769b2a1217ebc59572b55538b

    SHA512

    23cd2d6c540bf916d0afca9a53d10d90c714e095e67faa6688110f9207dd243857f36a299210c4bf0ba16491fbd48627d6783339f576ee2124c5f4edb0b865d1

  • \Users\Public\Documents\t\spolsvt.exe

    Filesize

    16KB

    MD5

    cdce4713e784ae069d73723034a957ff

    SHA1

    9a393a6bab6568f1a774fb753353223f11367e09

    SHA256

    b29e48102ecb3d3614e8980a8b8cc63dd2b993c6346f466479244ec2b47b69d8

    SHA512

    0a3a59a305cc2a6fad4e1315b0bcc5a4129595dfe1e8b703363fa02528d2d7c48d3fd22d365708be84a5557cf1916873df9563c454732f93f94a66e7e3b9fb0f

  • \Windows\DNomb\spolsvt.exe

    Filesize

    9KB

    MD5

    523d5c39f9d8d2375c3df68251fa2249

    SHA1

    d4ed365c44bec9246fc1a65a32a7791792647a10

    SHA256

    20e3dc90a3e83b6202e2a7f4603b60e5e859639cb68693426c400b13aaeabd78

    SHA512

    526e1bba30d03f1ac177c6ab7409187a730969c429cebef15da68ffcf44b3b93227781eebc827b2f7a0fa17c391e00a0e532263fd0167aeaeb0456f96cfe3ae4

  • memory/584-109-0x0000000000400000-0x0000000000516000-memory.dmp

    Filesize

    1.1MB

  • memory/584-104-0x0000000000400000-0x0000000000516000-memory.dmp

    Filesize

    1.1MB

  • memory/584-100-0x0000000000400000-0x0000000000516000-memory.dmp

    Filesize

    1.1MB

  • memory/584-84-0x0000000000400000-0x0000000000516000-memory.dmp

    Filesize

    1.1MB

  • memory/584-79-0x0000000000400000-0x0000000000516000-memory.dmp

    Filesize

    1.1MB

  • memory/584-75-0x0000000000400000-0x0000000000516000-memory.dmp

    Filesize

    1.1MB

  • memory/584-105-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

    Filesize

    4KB

  • memory/584-72-0x0000000000400000-0x0000000000516000-memory.dmp

    Filesize

    1.1MB

  • memory/1268-119-0x0000000000400000-0x0000000000430000-memory.dmp

    Filesize

    192KB

  • memory/1268-117-0x0000000000400000-0x0000000000430000-memory.dmp

    Filesize

    192KB

  • memory/1268-121-0x0000000000400000-0x0000000000430000-memory.dmp

    Filesize

    192KB

  • memory/2696-95-0x0000000004250000-0x0000000004251000-memory.dmp

    Filesize

    4KB

  • memory/2696-80-0x00000000042C0000-0x00000000042C2000-memory.dmp

    Filesize

    8KB

  • memory/2696-93-0x0000000004080000-0x0000000004081000-memory.dmp

    Filesize

    4KB

  • memory/2696-147-0x0000000000400000-0x00000000006A2000-memory.dmp

    Filesize

    2.6MB

  • memory/2696-145-0x0000000000400000-0x00000000006A2000-memory.dmp

    Filesize

    2.6MB

  • memory/2696-91-0x00000000042B0000-0x00000000042B1000-memory.dmp

    Filesize

    4KB

  • memory/2696-59-0x0000000000400000-0x00000000006A2000-memory.dmp

    Filesize

    2.6MB

  • memory/2696-61-0x00000000777D0000-0x00000000777D2000-memory.dmp

    Filesize

    8KB

  • memory/2696-90-0x0000000004270000-0x0000000004271000-memory.dmp

    Filesize

    4KB

  • memory/2696-64-0x00000000042E0000-0x00000000042E1000-memory.dmp

    Filesize

    4KB

  • memory/2696-65-0x0000000000400000-0x00000000006A2000-memory.dmp

    Filesize

    2.6MB

  • memory/2696-67-0x0000000004280000-0x0000000004281000-memory.dmp

    Filesize

    4KB

  • memory/2696-66-0x00000000040C0000-0x00000000040C1000-memory.dmp

    Filesize

    4KB

  • memory/2696-102-0x00000000040A0000-0x00000000040A1000-memory.dmp

    Filesize

    4KB

  • memory/2696-99-0x0000000004350000-0x0000000004351000-memory.dmp

    Filesize

    4KB

  • memory/2696-98-0x0000000004360000-0x0000000004361000-memory.dmp

    Filesize

    4KB

  • memory/2696-73-0x00000000042D0000-0x00000000042D1000-memory.dmp

    Filesize

    4KB

  • memory/2696-97-0x0000000004330000-0x0000000004331000-memory.dmp

    Filesize

    4KB

  • memory/2696-68-0x0000000004100000-0x0000000004101000-memory.dmp

    Filesize

    4KB

  • memory/2696-96-0x00000000042A0000-0x00000000042A1000-memory.dmp

    Filesize

    4KB

  • memory/2696-77-0x00000000040F0000-0x00000000040F1000-memory.dmp

    Filesize

    4KB

  • memory/2696-78-0x0000000000400000-0x00000000006A2000-memory.dmp

    Filesize

    2.6MB

  • memory/2696-92-0x0000000004290000-0x0000000004291000-memory.dmp

    Filesize

    4KB

  • memory/2696-82-0x00000000040D0000-0x00000000040D1000-memory.dmp

    Filesize

    4KB

  • memory/2696-88-0x00000000040B0000-0x00000000040B1000-memory.dmp

    Filesize

    4KB

  • memory/2696-85-0x00000000042F0000-0x00000000042F1000-memory.dmp

    Filesize

    4KB

  • memory/2696-94-0x0000000004260000-0x0000000004261000-memory.dmp

    Filesize

    4KB

  • memory/2696-87-0x00000000040E0000-0x00000000040E1000-memory.dmp

    Filesize

    4KB

  • memory/2700-0-0x0000000000400000-0x0000000000433000-memory.dmp

    Filesize

    204KB

  • memory/2700-143-0x0000000000400000-0x0000000000433000-memory.dmp

    Filesize

    204KB

  • memory/2700-10-0x0000000002530000-0x0000000002D31000-memory.dmp

    Filesize

    8.0MB

  • memory/2700-52-0x0000000000400000-0x0000000000433000-memory.dmp

    Filesize

    204KB

  • memory/2764-42-0x00000000002F0000-0x00000000002F1000-memory.dmp

    Filesize

    4KB

  • memory/2764-30-0x0000000000270000-0x0000000000271000-memory.dmp

    Filesize

    4KB

  • memory/2764-32-0x0000000000270000-0x0000000000271000-memory.dmp

    Filesize

    4KB

  • memory/2764-35-0x0000000000280000-0x0000000000281000-memory.dmp

    Filesize

    4KB

  • memory/2764-37-0x0000000000280000-0x0000000000281000-memory.dmp

    Filesize

    4KB

  • memory/2764-40-0x00000000002F0000-0x00000000002F1000-memory.dmp

    Filesize

    4KB

  • memory/2764-48-0x0000000000400000-0x0000000000C01000-memory.dmp

    Filesize

    8.0MB

  • memory/2764-27-0x0000000000260000-0x0000000000261000-memory.dmp

    Filesize

    4KB

  • memory/2764-43-0x0000000000300000-0x0000000000301000-memory.dmp

    Filesize

    4KB

  • memory/2764-25-0x0000000000260000-0x0000000000261000-memory.dmp

    Filesize

    4KB

  • memory/2764-22-0x0000000000250000-0x0000000000251000-memory.dmp

    Filesize

    4KB

  • memory/2764-20-0x0000000000250000-0x0000000000251000-memory.dmp

    Filesize

    4KB

  • memory/2764-18-0x0000000000250000-0x0000000000251000-memory.dmp

    Filesize

    4KB

  • memory/2764-17-0x0000000000230000-0x0000000000231000-memory.dmp

    Filesize

    4KB

  • memory/2764-15-0x0000000000230000-0x0000000000231000-memory.dmp

    Filesize

    4KB

  • memory/2764-12-0x0000000000230000-0x0000000000231000-memory.dmp

    Filesize

    4KB

  • memory/2764-13-0x0000000000400000-0x0000000000C01000-memory.dmp

    Filesize

    8.0MB

  • memory/2764-11-0x0000000000400000-0x0000000000C01000-memory.dmp

    Filesize

    8.0MB

  • memory/2764-63-0x0000000000400000-0x0000000000C01000-memory.dmp

    Filesize

    8.0MB

  • memory/2764-45-0x0000000000300000-0x0000000000301000-memory.dmp

    Filesize

    4KB

  • memory/2764-47-0x0000000000300000-0x0000000000301000-memory.dmp

    Filesize

    4KB

  • memory/2764-56-0x0000000000400000-0x0000000000C01000-memory.dmp

    Filesize

    8.0MB