Analysis

  • max time kernel
    119s
  • max time network
    122s
  • platform
    windows7_x64
  • resource
    win7-20231020-en
  • resource tags

    arch:x64arch:x86image:win7-20231020-enlocale:en-usos:windows7-x64system
  • submitted
    04-11-2023 21:34

General

  • Target

    NEAS.8258c7d749681951cff040c91ef03340_JC.exe

  • Size

    161KB

  • MD5

    8258c7d749681951cff040c91ef03340

  • SHA1

    406f9018b418ae80165a586e280e0032a9a28af9

  • SHA256

    9f80dbebf6a0eff41036bdc501002d424e6dd617b678ea6a115a18682a3da42b

  • SHA512

    d0449329b646cdc95d6da96b0336b22b9849111573601c8c8513c8067d631adbd37bb2e1e450b1233afdf377091d317e36208116d38110b1b6e2c8da93bf98ee

  • SSDEEP

    3072:9p56zRJ83+OJ7NoGvdwWy6k04yW/KlQ2C:9OzRWu27dlOd5sk

Score
10/10

Malware Config

Extracted

Family

urelas

C2

218.54.47.76

218.54.47.77

218.54.47.74

Signatures

  • Urelas

    Urelas is a trojan targeting card games.

  • Deletes itself 1 IoCs
  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious use of WriteProcessMemory 8 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\NEAS.8258c7d749681951cff040c91ef03340_JC.exe
    "C:\Users\Admin\AppData\Local\Temp\NEAS.8258c7d749681951cff040c91ef03340_JC.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of WriteProcessMemory
    PID:2344
    • C:\Users\Admin\AppData\Local\Temp\biudfw.exe
      "C:\Users\Admin\AppData\Local\Temp\biudfw.exe"
      2⤵
      • Executes dropped EXE
      PID:2320
    • C:\Windows\SysWOW64\cmd.exe
      cmd /c ""C:\Users\Admin\AppData\Local\Temp\sanfdr.bat" "
      2⤵
      • Deletes itself
      PID:2960

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\biudfw.exe

    Filesize

    161KB

    MD5

    80fca12deadfa5143928519353b914f9

    SHA1

    a8c9430bce4a7fc3c99518bb859e3b9fad03d545

    SHA256

    64dc3ab26df309f28aa1f78a49a286aa7b306675edd8fc3a58b1af36363bd2b0

    SHA512

    9648972232aa209825af55314a96de6677455ecd5da03ae2022b11aea868485360938172550dec28edddf5545ae0dc864384384a110d15f394fa67b62cbff319

  • C:\Users\Admin\AppData\Local\Temp\golfinfo.ini

    Filesize

    512B

    MD5

    ac5e84ed8031d66a9fcd5e472ba8091b

    SHA1

    06303add604104d6abbb69458f89773c066b470c

    SHA256

    3a3cfa6f4786dab0ac8bc76204948f32a3a2cbd094922f87c251ec80d22baae5

    SHA512

    7bf829102a70a1304dae435b8ae3c9ef9a925af7e995fe381d80730f4f702e1fd2a0a1b6a3a4b4667925f5bb95c897166a8fc0f52d3171d9cdba0bf09b53f152

  • C:\Users\Admin\AppData\Local\Temp\sanfdr.bat

    Filesize

    290B

    MD5

    fb2147c82dceb18e82d793cdc23bb1b5

    SHA1

    d05163414089b96bd263d37b6d90902a47cd87ee

    SHA256

    7b13923061b63aad37821c6c2cb3f4df1f8e24d84d85ea297168a2d110a88684

    SHA512

    905ad167eece706ff88589973d134c0751f11b5c13eb5787f0f21b40607b906bb1f390c1976275137778846eee2959cec7d64005e21676468f48055c34de256c

  • C:\Users\Admin\AppData\Local\Temp\sanfdr.bat

    Filesize

    290B

    MD5

    fb2147c82dceb18e82d793cdc23bb1b5

    SHA1

    d05163414089b96bd263d37b6d90902a47cd87ee

    SHA256

    7b13923061b63aad37821c6c2cb3f4df1f8e24d84d85ea297168a2d110a88684

    SHA512

    905ad167eece706ff88589973d134c0751f11b5c13eb5787f0f21b40607b906bb1f390c1976275137778846eee2959cec7d64005e21676468f48055c34de256c

  • \Users\Admin\AppData\Local\Temp\biudfw.exe

    Filesize

    161KB

    MD5

    80fca12deadfa5143928519353b914f9

    SHA1

    a8c9430bce4a7fc3c99518bb859e3b9fad03d545

    SHA256

    64dc3ab26df309f28aa1f78a49a286aa7b306675edd8fc3a58b1af36363bd2b0

    SHA512

    9648972232aa209825af55314a96de6677455ecd5da03ae2022b11aea868485360938172550dec28edddf5545ae0dc864384384a110d15f394fa67b62cbff319

  • memory/2320-10-0x00000000013E0000-0x000000000140B000-memory.dmp

    Filesize

    172KB

  • memory/2320-21-0x00000000013E0000-0x000000000140B000-memory.dmp

    Filesize

    172KB

  • memory/2320-22-0x00000000013E0000-0x000000000140B000-memory.dmp

    Filesize

    172KB

  • memory/2344-0-0x0000000000F40000-0x0000000000F6B000-memory.dmp

    Filesize

    172KB

  • memory/2344-6-0x0000000000560000-0x000000000058B000-memory.dmp

    Filesize

    172KB

  • memory/2344-18-0x0000000000F40000-0x0000000000F6B000-memory.dmp

    Filesize

    172KB