Analysis

  • max time kernel
    173s
  • max time network
    174s
  • platform
    windows7_x64
  • resource
    win7-20220414-en
  • submitted
    21-05-2022 03:58

General

  • Target

    hvala na predra?unu.exe

  • Size

    2.0MB

  • MD5

    1d025c80f31210ed9530941eae6633da

  • SHA1

    9af0a3622f58f4b50c9159cead2f672ec4707ece

  • SHA256

    b08f164f0363528f8928f01133da533a2868e12b95177df09b2f11e78510e02d

  • SHA512

    5f5bcbfb2598c299f27aeb667301c8972b18e13306ccc53c3d47ff045bc7f29cbc2ca3e2ac1e9e521a7b2ca13549a635762aecbbc001babb4ebf30c040fd1b79

Malware Config

Extracted

Family

agenttesla

Credentials

  • Protocol:
    smtp
  • Host:
    mail.kapackserv.com
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    Gwou86k?R#Xng+ywl~

Signatures

  • AgentTesla

    Agent Tesla is a remote access tool (RAT) written in visual basic.

  • AgentTesla Payload 4 IoCs
  • Executes dropped EXE 1 IoCs
  • UPX packed file 4 IoCs

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

  • Drops startup file 1 IoCs
  • Loads dropped DLL 2 IoCs
  • Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Modifies Internet Explorer settings 1 TTPs 53 IoCs
  • Suspicious behavior: EnumeratesProcesses 22 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of FindShellTrayWindow 5 IoCs
  • Suspicious use of SendNotifyMessage 3 IoCs
  • Suspicious use of SetWindowsHookEx 11 IoCs
  • Suspicious use of WriteProcessMemory 30 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\hvala na predra_unu.exe
    "C:\Users\Admin\AppData\Local\Temp\hvala na predra_unu.exe"
    1⤵
    • Drops startup file
    • Loads dropped DLL
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SendNotifyMessage
    • Suspicious use of WriteProcessMemory
    PID:1656
    • C:\Users\Admin\AppData\Local\Temp\hvala na predra_unumgr.exe
      "C:\Users\Admin\AppData\Local\Temp\hvala na predra_unumgr.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:1772
      • C:\Program Files\Internet Explorer\iexplore.exe
        "C:\Program Files\Internet Explorer\iexplore.exe"
        3⤵
        • Modifies Internet Explorer settings
        • Suspicious use of FindShellTrayWindow
        • Suspicious use of SetWindowsHookEx
        • Suspicious use of WriteProcessMemory
        PID:1644
        • C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
          "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:1644 CREDAT:275457 /prefetch:2
          4⤵
          • Modifies Internet Explorer settings
          • Suspicious use of SetWindowsHookEx
          PID:1888
      • C:\Program Files\Internet Explorer\iexplore.exe
        "C:\Program Files\Internet Explorer\iexplore.exe"
        3⤵
        • Modifies Internet Explorer settings
        • Suspicious use of FindShellTrayWindow
        • Suspicious use of SetWindowsHookEx
        • Suspicious use of WriteProcessMemory
        PID:900
        • C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
          "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:900 CREDAT:275457 /prefetch:2
          4⤵
          • Modifies Internet Explorer settings
          • Suspicious use of SetWindowsHookEx
          PID:580
    • C:\Windows\Microsoft.NET\Framework\v2.0.50727\MSBuild.exe
      "C:\\\\Windows\\\\Microsoft.NET\\\\Framework\\\\v2.0.50727\\\\MSBuild.exe"
      2⤵
      • Accesses Microsoft Outlook profiles
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      • outlook_office_path
      • outlook_win_path
      PID:1980
      • C:\Windows\SysWOW64\netsh.exe
        "netsh" wlan show profile
        3⤵
          PID:904

    Network

    MITRE ATT&CK Matrix ATT&CK v6

    Persistence

    Registry Run Keys / Startup Folder

    1
    T1060

    Defense Evasion

    Modify Registry

    2
    T1112

    Collection

    Email Collection

    1
    T1114

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Users\Admin\AppData\Local\Microsoft\Internet Explorer\Recovery\High\Active\RecoveryStore.{81E944F1-D8D9-11EC-9824-4224C87335A1}.dat
      Filesize

      5KB

      MD5

      80dcf4c6ad137002a73330fb6d006506

      SHA1

      8eb7c62091f0415fbf44728818ca8ff9b4ece6a7

      SHA256

      2427a7597f77376dc85a4c50829ab4c9e3476e77337aba353f01fd84f665b015

      SHA512

      41b3238f2dd9d077e8faab58ff1e15e6577b9ed5b4f2ec28eb148376d5b8a9239a02911e1a3aaa7f9ef22c444863aaa8275b5f0a1eb5a01445e062008db3b105

    • C:\Users\Admin\AppData\Local\Microsoft\Internet Explorer\Recovery\High\Active\RecoveryStore.{81E96C01-D8D9-11EC-9824-4224C87335A1}.dat
      Filesize

      5KB

      MD5

      229e1bc41ecf5ceb32374f18560c2e42

      SHA1

      d86e2b77ea3205b774ad49c9c4b21a1addcf8c2c

      SHA256

      1e774d940205acd132ac3966afa9efbcd01a641956518d4219a11fb62cbeab8c

      SHA512

      685ba0280d5089822acc1201bea164f5739c2aa97431f9d25099a88c565ca3d41df3963cc19f92a25c6779180a3eb6ad034767f3c900ee25c7ebe1356a438334

    • C:\Users\Admin\AppData\Local\Temp\hvala na predra_unumgr.exe
      Filesize

      105KB

      MD5

      d5ca6e1f080abc64bbb11e098acbeabb

      SHA1

      1849634bf5a65e1baddddd4452c99dfa003e2647

      SHA256

      30193b5ccf8a1834eac3502ef165350ab74b107451145f3d2937fdf24b9eceae

      SHA512

      aa57ce51de38af6212d7339c4baac543a54b0f527621b0ef9e78eca5e5699e8508a154f54f8ac04135527d8417275eeee72a502a362547575699330cc756b161

    • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Cookies\AQ4D1ILJ.txt
      Filesize

      604B

      MD5

      de979e9ed4d6cf5aee8cfb6ce317cd4a

      SHA1

      e8eeae13905cec9bb2eb8b63861e7d0b3c1a5cc9

      SHA256

      74d300c684dd842ef60585e99cd73d66c09a323d8b8abc793df607d8dde5c44c

      SHA512

      e9182e5d7743c8818ac563476c8c8ef1dcc9c4a5f7954a7a93f0196fe27f1d1a81dc776cfc47d2ee05e22596747f32bc733f3a8a875a0ae19df6d54055801a92

    • \Users\Admin\AppData\Local\Temp\hvala na predra_unumgr.exe
      Filesize

      105KB

      MD5

      d5ca6e1f080abc64bbb11e098acbeabb

      SHA1

      1849634bf5a65e1baddddd4452c99dfa003e2647

      SHA256

      30193b5ccf8a1834eac3502ef165350ab74b107451145f3d2937fdf24b9eceae

      SHA512

      aa57ce51de38af6212d7339c4baac543a54b0f527621b0ef9e78eca5e5699e8508a154f54f8ac04135527d8417275eeee72a502a362547575699330cc756b161

    • \Users\Admin\AppData\Local\Temp\hvala na predra_unumgr.exe
      Filesize

      105KB

      MD5

      d5ca6e1f080abc64bbb11e098acbeabb

      SHA1

      1849634bf5a65e1baddddd4452c99dfa003e2647

      SHA256

      30193b5ccf8a1834eac3502ef165350ab74b107451145f3d2937fdf24b9eceae

      SHA512

      aa57ce51de38af6212d7339c4baac543a54b0f527621b0ef9e78eca5e5699e8508a154f54f8ac04135527d8417275eeee72a502a362547575699330cc756b161

    • memory/904-77-0x0000000000000000-mapping.dmp
    • memory/1656-72-0x0000000074F40000-0x0000000074FD8000-memory.dmp
      Filesize

      608KB

    • memory/1656-54-0x00000000755C1000-0x00000000755C3000-memory.dmp
      Filesize

      8KB

    • memory/1656-73-0x000000007CA60000-0x000000007CAF8000-memory.dmp
      Filesize

      608KB

    • memory/1772-57-0x0000000000000000-mapping.dmp
    • memory/1772-59-0x0000000000400000-0x000000000045D000-memory.dmp
      Filesize

      372KB

    • memory/1980-62-0x0000000000400000-0x0000000000452000-memory.dmp
      Filesize

      328KB

    • memory/1980-71-0x0000000000400000-0x0000000000452000-memory.dmp
      Filesize

      328KB

    • memory/1980-70-0x0000000000400000-0x0000000000452000-memory.dmp
      Filesize

      328KB

    • memory/1980-75-0x0000000071780000-0x0000000071D2B000-memory.dmp
      Filesize

      5.7MB

    • memory/1980-69-0x000000000044CFAE-mapping.dmp
    • memory/1980-64-0x0000000000400000-0x0000000000452000-memory.dmp
      Filesize

      328KB