Resubmissions

03/07/2024, 16:09

240703-tl9n3ayepb

03/07/2024, 16:04

240703-thygmaycpc10

01/07/2024, 18:12

240701-ws6xvswbkj10

01/07/2024, 18:03

240701-wm5sls1gka10

01/07/2024, 18:03

240701-wm39sa1gjf10

01/07/2024, 18:03

240701-wm2e7avhkj10

01/07/2024, 18:03

240701-wmzxcs1fre10

01/07/2024, 18:02

240701-wmzats1frc10

01/07/2024, 18:02

240701-wmvbwa1fqh10

22/11/2023, 17:02

231122-vkac9adg6410

Analysis

  • max time kernel
    145s
  • max time network
    128s
  • platform
    windows7_x64
  • resource
    win7-20231129-en
  • resource tags

    arch:x64arch:x86image:win7-20231129-enlocale:en-usos:windows7-x64system
  • submitted
    03/07/2024, 16:04

General

  • Target
    5da0116af495e6d8af7241da9b8281d918b9ff9a98a3deab4cca1aec1e456c18.exe
  • Size 669KB
  • Sample240703-thygmaycpc
  • SHA256 5da0116af495e6d8af7241da9b8281d918b9ff9a98a3deab4cca1aec1e456c18
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Signatures

  • Modifies file permissions 1 TTPs 1 IoCs
  • UPX packed file 5 IoCs

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

  • Adds Run key to start application 2 TTPs 1 IoCs
  • Looks up external IP address via web service 6 IoCs

    Uses a legitimate IP lookup service to find the infected system's external IP.

  • Enumerates physical storage devices 1 TTPs

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

  • Modifies system certificate store 2 TTPs 5 IoCs
  • Suspicious behavior: EnumeratesProcesses 10 IoCs
  • Suspicious use of WriteProcessMemory 20 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\5da0116af495e6d8af7241da9b8281d918b9ff9a98a3deab4cca1aec1e456c18.exe
    "C:\Users\Admin\AppData\Local\Temp\5da0116af495e6d8af7241da9b8281d918b9ff9a98a3deab4cca1aec1e456c18.exe"
    1⤵
    • Adds Run key to start application
    • Modifies system certificate store
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:2956
    • C:\Windows\SysWOW64\icacls.exe
      icacls "C:\Users\Admin\AppData\Local\cf245c4c-5a37-4654-85a0-0c34985d2100" /deny *S-1-1-0:(OI)(CI)(DE,DC)
      2⤵
      • Modifies file permissions
      PID:2496
    • C:\Users\Admin\AppData\Local\Temp\5da0116af495e6d8af7241da9b8281d918b9ff9a98a3deab4cca1aec1e456c18.exe
      "C:\Users\Admin\AppData\Local\Temp\5da0116af495e6d8af7241da9b8281d918b9ff9a98a3deab4cca1aec1e456c18.exe" --Admin IsNotAutoStart IsNotTask
      2⤵
      • Modifies system certificate store
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:2648
      • C:\Users\Admin\AppData\Local\Temp\5da0116af495e6d8af7241da9b8281d918b9ff9a98a3deab4cca1aec1e456c18.exe
        "C:\Users\Admin\AppData\Local\Temp\5da0116af495e6d8af7241da9b8281d918b9ff9a98a3deab4cca1aec1e456c18.exe" --ForNetRes "FsnDCf1u1wJvLcqbFxxtOchBf2V2lgtk24oM5mt2" 0h7mFQcjRC3pDgsRcrWZ7K7bdAgvgDos224DmXt1 IsNotAutoStart IsNotTask
        3⤵
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of WriteProcessMemory
        PID:1556
        • C:\Users\Admin\AppData\Local\Temp\5da0116af495e6d8af7241da9b8281d918b9ff9a98a3deab4cca1aec1e456c18.exe
          "C:\Users\Admin\AppData\Local\Temp\5da0116af495e6d8af7241da9b8281d918b9ff9a98a3deab4cca1aec1e456c18.exe" --Service 1556 "FsnDCf1u1wJvLcqbFxxtOchBf2V2lgtk24oM5mt2" 0h7mFQcjRC3pDgsRcrWZ7K7bdAgvgDos224DmXt1
          4⤵
          • Suspicious behavior: EnumeratesProcesses
          PID:596
      • C:\Users\Admin\AppData\Local\Temp\5da0116af495e6d8af7241da9b8281d918b9ff9a98a3deab4cca1aec1e456c18.exe
        "C:\Users\Admin\AppData\Local\Temp\5da0116af495e6d8af7241da9b8281d918b9ff9a98a3deab4cca1aec1e456c18.exe" --Service 2648 "FsnDCf1u1wJvLcqbFxxtOchBf2V2lgtk24oM5mt2" 0h7mFQcjRC3pDgsRcrWZ7K7bdAgvgDos224DmXt1
        3⤵
        • Suspicious behavior: EnumeratesProcesses
        PID:1392

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        8B2B9A00839EED1DFDCCC3BFC2F5DF12

        • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\8B2B9A00839EED1DFDCCC3BFC2F5DF12
        • Size 1KB
        • SHA256 d6b1932822bbd72a8e78c771717d992142348f67d625a42393719fefbe59b0ed
        • MD5 SHA1 SHA512

        94308059B57B3142E455B38A6EB92015

        • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\94308059B57B3142E455B38A6EB92015
        • Size 70KB
        • SHA256 b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f
        • MD5 SHA1 SHA512 SSDEEP

        B46811C17859FFB409CF0E904A4AA8F8

        • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\B46811C17859FFB409CF0E904A4AA8F8
        • Size 436B
        • SHA256 5ba8817f13eee00e75158bad93076ab474a068c6b52686579e0f728fda68499f
        • MD5 SHA1 SHA512

        F0ACCF77CDCBFF39F6191887F6D2D357

        • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\F0ACCF77CDCBFF39F6191887F6D2D357
        • Size 1KB
        • SHA256 df545bf919a2439c36983b54cdfc903dfa4f37d3996d8d84b4c31eec6f3c163e
        • MD5 SHA1 SHA512

        8B2B9A00839EED1DFDCCC3BFC2F5DF12

        • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\8B2B9A00839EED1DFDCCC3BFC2F5DF12
        • Size 174B
        • SHA256 cecd3fd8894dc28c1a3d7e3fb56e7be9004dff6b12dcc986659210e967d18b54
        • MD5 SHA1 SHA512

        94308059B57B3142E455B38A6EB92015

        • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015
        • Size 342B
        • SHA256 04ef3af7ce5606b71e9af54ef1798146ffaed0a2254bb4fc27696bd58ee02c4b
        • MD5 SHA1 SHA512

        B46811C17859FFB409CF0E904A4AA8F8

        • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\B46811C17859FFB409CF0E904A4AA8F8
        • Size 170B
        • SHA256 2201e99665e441761b54f30c5ca5768b368b83733f33528fb226d026083ff225
        • MD5 SHA1 SHA512

        F0ACCF77CDCBFF39F6191887F6D2D357

        • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\F0ACCF77CDCBFF39F6191887F6D2D357
        • Size 242B
        • SHA256 7389d9c1963d997fa31c74d2ff67fbfe4743759953740441d5f439b8388d542d
        • MD5 SHA1 SHA512

        Tar2A4C.tmp

        • Path C:\Users\Admin\AppData\Local\Temp\Tar2A4C.tmp
        • Size 181KB
        • SHA256 8efbc21559ef8b1bcf526800d8070baad42474ce7198e26fa771dbb41a76b1d8
        • MD5 SHA1 SHA512 SSDEEP

        5da0116af495e6d8af7241da9b8281d918b9ff9a98a3deab4cca1aec1e456c18.exe

        • Path C:\Users\Admin\AppData\Local\cf245c4c-5a37-4654-85a0-0c34985d2100\5da0116af495e6d8af7241da9b8281d918b9ff9a98a3deab4cca1aec1e456c18.exe
        • Size 669KB
        • SHA256 5da0116af495e6d8af7241da9b8281d918b9ff9a98a3deab4cca1aec1e456c18
        • MD5 SHA1 SHA512 SSDEEP

        memory/596-78-0x0000000000400000-0x00000000004A9000-memory.dmp

        memory/596-94-0x0000000000400000-0x00000000004A9000-memory.dmp

        memory/1392-97-0x0000000000400000-0x00000000004A9000-memory.dmp

        memory/1556-67-0x0000000000400000-0x00000000004A9000-memory.dmp

        memory/1556-95-0x0000000000400000-0x00000000004A9000-memory.dmp

        memory/2648-45-0x0000000000400000-0x00000000004A9000-memory.dmp

        memory/2648-68-0x0000000002770000-0x0000000002819000-memory.dmp

        memory/2648-99-0x0000000002770000-0x0000000002819000-memory.dmp

        memory/2648-96-0x0000000000400000-0x00000000004A9000-memory.dmp

        memory/2648-47-0x0000000000400000-0x00000000004A9000-memory.dmp

        memory/2648-63-0x0000000000400000-0x00000000004A9000-memory.dmp

        memory/2648-64-0x0000000000400000-0x00000000004A9000-memory.dmp

        memory/2648-65-0x0000000000400000-0x00000000004A9000-memory.dmp

        memory/2648-66-0x0000000002770000-0x0000000002819000-memory.dmp

        memory/2956-0-0x0000000000400000-0x00000000004A9000-memory.dmp

        memory/2956-42-0x00000000005B0000-0x00000000006B0000-memory.dmp

        memory/2956-40-0x0000000003CB0000-0x0000000003D59000-memory.dmp

        memory/2956-39-0x0000000003CA0000-0x0000000003D49000-memory.dmp

        memory/2956-3-0x0000000000400000-0x0000000000476000-memory.dmp

        memory/2956-44-0x0000000000400000-0x00000000004A9000-memory.dmp

        memory/2956-2-0x00000000005B0000-0x00000000006B0000-memory.dmp

        memory/2956-43-0x0000000000400000-0x0000000000476000-memory.dmp