Analysis

  • max time kernel
    142s
  • max time network
    152s
  • platform
    windows7_x64
  • resource
    win7-20241010-en
  • resource tags

    arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system
  • submitted
    22-11-2024 01:14

General

  • Target

    cho_mea64.exe

  • Size

    20.4MB

  • MD5

    044f51347e293ac77de4cd47bdccbacf

  • SHA1

    4c67777228575ac317c62855e6d9dd0a6da48c2d

  • SHA256

    4ca9da66d04a5f68deb0bab55aca5d64b8d8307c58f2943d6a67a3b584855ee2

  • SHA512

    f3976170a7f965f9674712904a0effc8383ea1a7ac5961a746b319d4659f52f82578b5adf4a0ca52f0434a896d310268ac7e40391fb0ea929a2482bb78aa0775

  • SSDEEP

    393216:SiX7fx65E78eL1uwtkbZtqtQEt8+OIbyMl1PiT+KiSn7h6LPr8Y:bTxOEJuw+bP5krOIO3aKiSn7aPIY

Score
7/10

Malware Config

Signatures

  • Executes dropped EXE 10 IoCs
  • Loads dropped DLL 18 IoCs
  • Enumerates connected drives 3 TTPs 44 IoCs

    Attempts to read the root path of hard drives other than the default C: drive.

  • Drops file in Windows directory 12 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • System Location Discovery: System Language Discovery 1 TTPs 6 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Checks processor information in registry 2 TTPs 4 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 47 IoCs
  • Suspicious use of FindShellTrayWindow 1 IoCs
  • Suspicious use of WriteProcessMemory 36 IoCs
  • Uses Task Scheduler COM API 1 TTPs

    The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.

Processes

  • C:\Users\Admin\AppData\Local\Temp\cho_mea64.exe
    "C:\Users\Admin\AppData\Local\Temp\cho_mea64.exe"
    1⤵
    • Loads dropped DLL
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:844
    • C:\Users\Admin\AppData\Local\Temp\is-33TKB.tmp\cho_mea64.tmp
      "C:\Users\Admin\AppData\Local\Temp\is-33TKB.tmp\cho_mea64.tmp" /SL5="$50148,20366305,827392,C:\Users\Admin\AppData\Local\Temp\cho_mea64.exe"
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of WriteProcessMemory
      PID:2448
      • C:\Users\Admin\AppData\Roaming\611641ae7b4c35da\20decf5c428.exe
        "C:\Users\Admin\AppData\Roaming\611641ae7b4c35da\20decf5c428.exe" -pc0873f648e06c724 -y -o"C:\Users\Admin\AppData\Local\Temp\is-STKRG.tmp\..\988200451053922062101591754\"
        3⤵
        • Executes dropped EXE
        • System Location Discovery: System Language Discovery
        PID:2204
      • C:\Users\Admin\AppData\Roaming\611641ae7b4c35da\62b24530.exe
        "C:\Users\Admin\AppData\Roaming\611641ae7b4c35da\62b24530.exe" -p7fe04917 -y -o"C:\Users\Admin\AppData\Local\Temp\is-STKRG.tmp\..\988200451053922062101591754\"
        3⤵
        • Executes dropped EXE
        • System Location Discovery: System Language Discovery
        PID:3064
      • C:\Users\Admin\AppData\Local\Temp\988200451053922062101591754\soiucosxz.exe
        "C:\Users\Admin\AppData\Local\Temp\is-STKRG.tmp\..\988200451053922062101591754\soiucosxz.exe"
        3⤵
        • Executes dropped EXE
        • Loads dropped DLL
        • Enumerates connected drives
        • Checks processor information in registry
        • Suspicious behavior: EnumeratesProcesses
        PID:2932
  • C:\Windows\system32\cmd.exe
    cmd /c start "" "C:\Users\Admin\AppData\Local\Temp\is-STKRG.tmp\..\988200451053922062101591754\soiucosxz.exe" 3aede031690535070f390095f2d2 2932 "C:\Users\Admin\AppData\Local\Temp\is-STKRG.tmp\..\988200451053922062101591754\"
    1⤵
    • Loads dropped DLL
    • Suspicious use of WriteProcessMemory
    PID:700
    • C:\Users\Admin\AppData\Local\Temp\988200451053922062101591754\soiucosxz.exe
      "C:\Users\Admin\AppData\Local\Temp\is-STKRG.tmp\..\988200451053922062101591754\soiucosxz.exe" 3aede031690535070f390095f2d2 2932 "C:\Users\Admin\AppData\Local\Temp\is-STKRG.tmp\..\988200451053922062101591754\"
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Drops file in Windows directory
      PID:592
  • C:\Windows\Y9rLFYHTk9Ii\soiucosxz.exe
    "C:\Windows\Y9rLFYHTk9Ii\soiucosxz.exe"
    1⤵
    • Executes dropped EXE
    • Loads dropped DLL
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:828
    • C:\Windows\Y9rLFYHTk9Ii\app-0.89.2\soiucosxz.exe
      "C:\Windows\Y9rLFYHTk9Ii\app-0.89.2\soiucosxz.exe"
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:2436
      • C:\Windows\Y9rLFYHTk9Ii\app-0.89.2\app-0.89.2\soiucosxz.exe
        "C:\Windows\Y9rLFYHTk9Ii\app-0.89.2\app-0.89.2\soiucosxz.exe"
        3⤵
        • Executes dropped EXE
        • Loads dropped DLL
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of WriteProcessMemory
        PID:1920
        • C:\Windows\Y9rLFYHTk9Ii\app-0.89.2\app-0.89.2\soiucosxz.exe
          "C:\Windows\Y9rLFYHTk9Ii\app-0.89.2\app-0.89.2\soiucosxz.exe" "bcbf6f4"
          4⤵
          • Executes dropped EXE
          • Loads dropped DLL
          • Enumerates connected drives
          • Checks processor information in registry
          • Suspicious behavior: EnumeratesProcesses
          PID:2024
  • C:\Windows\system32\cmd.exe
    cmd /c start "" "C:\Windows\Y9rLFYHTk9Ii\app-0.89.2\app-0.89.2\soiucosxz.exe" 6c376dd8a 2932 "C:\Users\Admin\AppData\Local\Temp\is-STKRG.tmp\..\988200451053922062101591754\"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:2840
    • C:\Windows\Y9rLFYHTk9Ii\app-0.89.2\app-0.89.2\soiucosxz.exe
      "C:\Windows\Y9rLFYHTk9Ii\app-0.89.2\app-0.89.2\soiucosxz.exe" 6c376dd8a 2932 "C:\Users\Admin\AppData\Local\Temp\is-STKRG.tmp\..\988200451053922062101591754\"
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      PID:1504

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\ProgramData\AB819CA4478D450CF3B95B908C7AD475

    Filesize

    520B

    MD5

    8747af239a6fafb5f7c53f121e15e986

    SHA1

    12af00017ad73d87ca817520bd9d831b0656e003

    SHA256

    ff878c9d0dbbdf01542ca5cbbf187a16ee1a5b0f93d83ffe1dfd732c932e1d35

    SHA512

    831ea37be909e8e9863e229e2f06cd9cf33087018d4f93e65a4c9d65068903ffb8e573bab388ea37f8a231a8c241c2d6c5d4ec5f4c077f8eff02dfc1d55b6d5c

  • C:\Users\Admin\AppData\Local\Temp\988200451053922062101591754\8FF3EF380313034D8D84BAF59.cat

    Filesize

    10.9MB

    MD5

    9ea898b2095b6f751b020c3e294f2482

    SHA1

    09380f3924a961c7899b4bfa5f5f91515f9221a5

    SHA256

    3c0a526440055c1140cd62d1942c5035bb378b99c6f48f7dec0207e4791fa8e1

    SHA512

    e6a01f7d5e45ad65988b81107f10c15bce37221ef1da1d890fe2d1453efc8c1c2b33fd5de6c51bd72e18e9286c0ff06bd55d7fe2f068324aa15b0d34353476c5

  • C:\Users\Admin\AppData\Local\Temp\988200451053922062101591754\libcurl.dll

    Filesize

    556KB

    MD5

    6b2548cc404f3dd55634efa291fa98d0

    SHA1

    a076a60d99d70fd8aa7664a2534445a502febe27

    SHA256

    7ae384b8695d7a9c2b6640927cb6ac592229aef9ebeeb80b91d556777c6dfb5d

    SHA512

    14068e9e7d5f7e4494ffa75d369068234cdb050286d3356298e0387cf13d7681c0d68b57b6b299958c86ee3ae1dc3e54adc4c376e7b869d7d76fc2e91ed95009

  • C:\Users\Admin\AppData\Local\Temp\988200451053922062101591754\zlibwapi.dll

    Filesize

    3.1MB

    MD5

    4d05d940fa3851c6322f11463f76fb85

    SHA1

    5502f7bf7bdaed6861044cb34cff08656c963775

    SHA256

    01f062fa5f11aebf8c2cd57fc148c3b4b1a64e97dcf68194c0545361973d6e94

    SHA512

    5cf57118e70228afad77368277bd2fc8de71172d9317b44b2147e68dd8dcbfaf3dcc052fcdf430870484ef281ffddbeaef96a9d00acb8de29b0d03bba01ae34c

  • C:\Users\Admin\AppData\Roaming\611641ae7b4c35da\20decf5c428.exe

    Filesize

    3.7MB

    MD5

    545274ea5d70ff8beb929cda02be53de

    SHA1

    b06f26c7cd5cda7bf1b8b04778dd157d1e499c35

    SHA256

    480c2895caee1029ed1160b69c68ca2838ca4fe113466d84dc8064ad28c012c2

    SHA512

    94924a8d39458bb57b6fe1a908b6e0796bbe6d4c6010505f185a7d89d057d73c707f4074b6589ba5b708bce2afb9f4dbaffd2ad482ff49e31cdf3c2e40dddfd1

  • C:\Windows\Y9rLFYHTk9Ii\app-0.89.2\app-0.89.2\zlibwapi.dll

    Filesize

    1.0MB

    MD5

    24cb34cacc6e1c539e58bd5cda620a29

    SHA1

    c6aaf4ce2b51ec487632b41d16b812cbf6b240d9

    SHA256

    5e4b57f8b3d39cc6f90e0e17b7d12d9f3eea67d1a1f2ee73c428c1388a7e65c3

    SHA512

    83d097955af0844280ee2b6df3173cb06275ed6be085089e2898cacedfc769c10c0870d2782f0180bec4f0c32c02b418b34a8082c29784393a3a4b7c8aa834ba

  • C:\Windows\Y9rLFYHTk9Ii\soiucosxz.exe

    Filesize

    586KB

    MD5

    f6f6ff4e9b359bc005a25fadb3a0aa61

    SHA1

    831fe06ce2015e2d66467d04f2d46ec3e96524d3

    SHA256

    6eb2a5f8ba7b7e2438a9608b7a2d5eefa1f8b66aaf7060c208678e47c3565324

    SHA512

    db29271f28a3bff4bd3f4073b522c662f70865cc1067e0de2c11ef284d8d88fe9ca165485da6fe52372bf3db33764f195853b883d8fdab1b502e960b0915da14

  • \Users\Admin\AppData\Local\Temp\988200451053922062101591754\soiucosxz.exe

    Filesize

    2.2MB

    MD5

    6cf29dbf1fa710cccf6ba1c4c01f6b85

    SHA1

    a1debdb076c8c655e3d78c6ae82f1beba386a2ba

    SHA256

    f85ce4492e1354f8310027c5f70ef73aae654fcd8fd9a58034e4f82a41a9826b

    SHA512

    ebcc6599c33a80bb3e5c627a5f861fc9742d8558c4551544109288f80155885791a3f701af1aa7a4513cc5d121b77678a4cd46ca38a7bdd3cf7288e58e01f4f5

  • \Users\Admin\AppData\Local\Temp\is-33TKB.tmp\cho_mea64.tmp

    Filesize

    3.2MB

    MD5

    dc63a4763a59d647c3d0c4480eae0329

    SHA1

    8d687e717ace0d7d83a1eaa1c5b9eaec168744e7

    SHA256

    6b9ab11e1a2a79b1a3d211422ac1e603578e7bcaba2917747d57cf8bedac238f

    SHA512

    39069e76dee870831e1240315f61a9060920ab2de85d1fec0d789eee8882e204414e0934681132ebbc5322d674b068471043859ccbdb869fb62bfa6fc5b741eb

  • \Users\Admin\AppData\Local\Temp\is-STKRG.tmp\_isetup\_isdecmp.dll

    Filesize

    34KB

    MD5

    c6ae924ad02500284f7e4efa11fa7cfc

    SHA1

    2a7770b473b0a7dc9a331d017297ff5af400fed8

    SHA256

    31d04c1e4bfdfa34704c142fa98f80c0a3076e4b312d6ada57c4be9d9c7dcf26

    SHA512

    f321e4820b39d1642fc43bf1055471a323edcc0c4cbd3ddd5ad26a7b28c4fb9fc4e57c00ae7819a4f45a3e0bb9c7baa0ba19c3ceedacf38b911cdf625aa7ddae

  • \Users\Admin\AppData\Roaming\611641ae7b4c35da\62b24530.exe

    Filesize

    14.9MB

    MD5

    cb8267b4b34f49626eaf67b562dc4c87

    SHA1

    45f12cdad060b99d52345c3174afb2a8014b67ab

    SHA256

    fa7fe6c1dec39e41f15135abb057aaa81d8c8aeee56dffda46abd2c0d9269643

    SHA512

    e8364be88e66e3978ddc4841fbada73ea052425a6b134cf96330d665d757dff21df6ab0d0f72b0feede792de2b59626dc5e132c8d22153fde28e32f9e135ddc7

  • memory/592-74-0x0000000002FF0000-0x0000000003B47000-memory.dmp

    Filesize

    11.3MB

  • memory/592-76-0x0000000002FF0000-0x0000000003B47000-memory.dmp

    Filesize

    11.3MB

  • memory/844-50-0x0000000000AA0000-0x0000000000B78000-memory.dmp

    Filesize

    864KB

  • memory/844-53-0x0000000000AA0000-0x0000000000B78000-memory.dmp

    Filesize

    864KB

  • memory/844-0-0x0000000000AA0000-0x0000000000B78000-memory.dmp

    Filesize

    864KB

  • memory/844-2-0x0000000000AA1000-0x0000000000B49000-memory.dmp

    Filesize

    672KB

  • memory/1504-115-0x0000000002EB0000-0x0000000003A07000-memory.dmp

    Filesize

    11.3MB

  • memory/1504-118-0x0000000002EB0000-0x0000000003A07000-memory.dmp

    Filesize

    11.3MB

  • memory/1504-110-0x000007FEF72C0000-0x000007FEF73C8000-memory.dmp

    Filesize

    1.0MB

  • memory/1920-104-0x000007FEF72C0000-0x000007FEF73C8000-memory.dmp

    Filesize

    1.0MB

  • memory/1920-123-0x0000000002BC0000-0x0000000003717000-memory.dmp

    Filesize

    11.3MB

  • memory/1920-117-0x0000000002BC0000-0x0000000003717000-memory.dmp

    Filesize

    11.3MB

  • memory/2024-132-0x0000000004050000-0x0000000004BA7000-memory.dmp

    Filesize

    11.3MB

  • memory/2024-129-0x000007FEF72C0000-0x000007FEF73C8000-memory.dmp

    Filesize

    1.0MB

  • memory/2024-140-0x0000000005B60000-0x0000000005DD3000-memory.dmp

    Filesize

    2.4MB

  • memory/2024-137-0x0000000005B60000-0x0000000005DD3000-memory.dmp

    Filesize

    2.4MB

  • memory/2024-138-0x0000000005B60000-0x0000000005DD3000-memory.dmp

    Filesize

    2.4MB

  • memory/2024-134-0x0000000004050000-0x0000000004BA7000-memory.dmp

    Filesize

    11.3MB

  • memory/2024-135-0x0000000004050000-0x0000000004BA7000-memory.dmp

    Filesize

    11.3MB

  • memory/2448-8-0x0000000000090000-0x0000000000091000-memory.dmp

    Filesize

    4KB

  • memory/2448-49-0x0000000000EF0000-0x0000000001227000-memory.dmp

    Filesize

    3.2MB

  • memory/2932-121-0x0000000005AC0000-0x0000000005D33000-memory.dmp

    Filesize

    2.4MB

  • memory/2932-69-0x0000000005AC0000-0x0000000005D33000-memory.dmp

    Filesize

    2.4MB

  • memory/2932-72-0x0000000005AC0000-0x0000000005D33000-memory.dmp

    Filesize

    2.4MB

  • memory/2932-70-0x0000000005AC0000-0x0000000005D33000-memory.dmp

    Filesize

    2.4MB

  • memory/2932-58-0x0000000004140000-0x0000000004C97000-memory.dmp

    Filesize

    11.3MB

  • memory/2932-57-0x0000000004140000-0x0000000004C97000-memory.dmp

    Filesize

    11.3MB

  • memory/2932-55-0x0000000002000000-0x0000000002AEB000-memory.dmp

    Filesize

    10.9MB