Analysis

  • max time kernel
    166s
  • max time network
    34s
  • platform
    windows7_x64
  • resource
    win7-20221111-en
  • resource tags

    arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
  • submitted
    30-11-2022 19:46

General

  • Target

    e8acd36b264ba0f6ef059bd9e31a2adbae4ae8271462880501bbc786dd087263.exe

  • Size

    1.4MB

  • MD5

    867a94427df23e7400f1912e0054c02e

  • SHA1

    c8004ee0f6895757e6e3c391100b09ca6fedacc3

  • SHA256

    e8acd36b264ba0f6ef059bd9e31a2adbae4ae8271462880501bbc786dd087263

  • SHA512

    a2ef02dd014ab123d372b9925b86e352cc1324cb0ebc8838f94e52243fef2d867a49ad132e8c7e35b983d9395b7140e4a454f4dfa20d17aad7de6ee04fce579d

  • SSDEEP

    24576:V6f6UcjbYmVn3hITCmvOTggIRfmQX3zRYC6FVZPv+FWe4Ys/E:V861jnJgjYlDZ3+UT/E

Malware Config

Extracted

Family

darkcomet

Botnet

gyge

C2

127.0.0.1:1604

Mutex

DCMIN_MUTEX-CZGVNEU

Attributes
  • InstallPath

    DCSCMIN\IMDCSC.exe

  • gencode

    2uuQwotMFJj1

  • install

    true

  • offline_keylogger

    true

  • persistence

    false

  • reg_key

    DarkComet RAT

Signatures

  • Darkcomet

    DarkComet is a remote access trojan (RAT) developed by Jean-Pierre Lesueur.

  • Modifies WinLogon for persistence 2 TTPs 1 IoCs
  • Executes dropped EXE 4 IoCs
  • Loads dropped DLL 5 IoCs
  • Reads local data of messenger clients 2 TTPs

    Infostealers often target stored data of messaging applications, which can include saved credentials and account information.

  • Uses the VBS compiler for execution 1 TTPs
  • Adds Run key to start application 2 TTPs 3 IoCs
  • Suspicious use of SetThreadContext 3 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 25 IoCs
  • Suspicious use of WriteProcessMemory 45 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\e8acd36b264ba0f6ef059bd9e31a2adbae4ae8271462880501bbc786dd087263.exe
    "C:\Users\Admin\AppData\Local\Temp\e8acd36b264ba0f6ef059bd9e31a2adbae4ae8271462880501bbc786dd087263.exe"
    1⤵
    • Loads dropped DLL
    • Adds Run key to start application
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:972
    • C:\Users\Admin\AppData\Local\Temp\STUB.exe
      "C:\Users\Admin\AppData\Local\Temp\STUB.exe"
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Adds Run key to start application
      • Suspicious use of SetThreadContext
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:1768
      • C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
        C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
        3⤵
          PID:608
        • C:\Users\Admin\AppData\Local\Temp\STUB.exe
          "C:\Users\Admin\AppData\Local\Temp\STUB.exe"
          3⤵
          • Executes dropped EXE
          • Suspicious use of SetThreadContext
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of WriteProcessMemory
          PID:1560
          • C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
            C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
            4⤵
              PID:1260
        • C:\Users\Admin\AppData\Local\Temp\svchost.exe
          C:\Users\Admin\AppData\Local\Temp\svchost.exe
          2⤵
          • Modifies WinLogon for persistence
          • Executes dropped EXE
          • Loads dropped DLL
          • Adds Run key to start application
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of WriteProcessMemory
          PID:872
          • C:\Users\Admin\Documents\DCSCMIN\IMDCSC.exe
            "C:\Users\Admin\Documents\DCSCMIN\IMDCSC.exe"
            3⤵
            • Executes dropped EXE
            PID:752

      Network

      MITRE ATT&CK Enterprise v6

      Replay Monitor

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      Downloads

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

        Filesize

        471KB

        MD5

        c928bc831e6ce7922c9fe238cdabb934

        SHA1

        fde9ab78e71d9800f6f2cdfb86a3f8a66d3aed52

        SHA256

        bcaf53d9cb39dc6031270bfa336d450aae0cbab112d5e7cbf369702f1a9bcf24

        SHA512

        07d7a5557bb56ceaf72c65b65c3fd5e1ddbd10dd75a5b6ac726b0e95c33eb1ea0c77f996b1969991452f12accb92c0628f68832e64c9f679450d4147ef57cf5d

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

        Filesize

        471KB

        MD5

        c928bc831e6ce7922c9fe238cdabb934

        SHA1

        fde9ab78e71d9800f6f2cdfb86a3f8a66d3aed52

        SHA256

        bcaf53d9cb39dc6031270bfa336d450aae0cbab112d5e7cbf369702f1a9bcf24

        SHA512

        07d7a5557bb56ceaf72c65b65c3fd5e1ddbd10dd75a5b6ac726b0e95c33eb1ea0c77f996b1969991452f12accb92c0628f68832e64c9f679450d4147ef57cf5d

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

        Filesize

        471KB

        MD5

        c928bc831e6ce7922c9fe238cdabb934

        SHA1

        fde9ab78e71d9800f6f2cdfb86a3f8a66d3aed52

        SHA256

        bcaf53d9cb39dc6031270bfa336d450aae0cbab112d5e7cbf369702f1a9bcf24

        SHA512

        07d7a5557bb56ceaf72c65b65c3fd5e1ddbd10dd75a5b6ac726b0e95c33eb1ea0c77f996b1969991452f12accb92c0628f68832e64c9f679450d4147ef57cf5d

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

        Filesize

        1.1MB

        MD5

        34aa912defa18c2c129f1e09d75c1d7e

        SHA1

        9c3046324657505a30ecd9b1fdb46c05bde7d470

        SHA256

        6df94b7fa33f1b87142adc39b3db0613fc520d9e7a5fd6a5301dd7f51f8d0386

        SHA512

        d1ea9368f5d7166180612fd763c87afb647d088498887961f5e7fb0a10f4a808bd5928e8a3666d70ff794093c51ecca8816f75dd47652fd4eb23dce7f9aa1f98

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

        Filesize

        1.1MB

        MD5

        34aa912defa18c2c129f1e09d75c1d7e

        SHA1

        9c3046324657505a30ecd9b1fdb46c05bde7d470

        SHA256

        6df94b7fa33f1b87142adc39b3db0613fc520d9e7a5fd6a5301dd7f51f8d0386

        SHA512

        d1ea9368f5d7166180612fd763c87afb647d088498887961f5e7fb0a10f4a808bd5928e8a3666d70ff794093c51ecca8816f75dd47652fd4eb23dce7f9aa1f98

      • C:\Users\Admin\AppData\Roaming\chrtmp

        Filesize

        88KB

        MD5

        8ee018331e95a610680a789192a9d362

        SHA1

        e1fba0ac3f3d8689acf6c2ee26afdfd0c8e02df9

        SHA256

        94354ea6703c5ef5fa052aeb1d29715587d80300858ebc063a61c02b7e6e9575

        SHA512

        4b89b5adc77641e497eda7db62a48fee7b4b8dda83bff637cac850645d31deb93aafee5afeb41390e07fd16505a63f418b6cb153a1d35777c483e2d6d3f783b4

      • C:\Users\Admin\AppData\Roaming\fud istealer 2.exe

        Filesize

        471KB

        MD5

        c928bc831e6ce7922c9fe238cdabb934

        SHA1

        fde9ab78e71d9800f6f2cdfb86a3f8a66d3aed52

        SHA256

        bcaf53d9cb39dc6031270bfa336d450aae0cbab112d5e7cbf369702f1a9bcf24

        SHA512

        07d7a5557bb56ceaf72c65b65c3fd5e1ddbd10dd75a5b6ac726b0e95c33eb1ea0c77f996b1969991452f12accb92c0628f68832e64c9f679450d4147ef57cf5d

      • C:\Users\Admin\Documents\DCSCMIN\IMDCSC.exe

        Filesize

        1.1MB

        MD5

        34aa912defa18c2c129f1e09d75c1d7e

        SHA1

        9c3046324657505a30ecd9b1fdb46c05bde7d470

        SHA256

        6df94b7fa33f1b87142adc39b3db0613fc520d9e7a5fd6a5301dd7f51f8d0386

        SHA512

        d1ea9368f5d7166180612fd763c87afb647d088498887961f5e7fb0a10f4a808bd5928e8a3666d70ff794093c51ecca8816f75dd47652fd4eb23dce7f9aa1f98

      • C:\Users\Admin\Documents\DCSCMIN\IMDCSC.exe

        Filesize

        1.1MB

        MD5

        34aa912defa18c2c129f1e09d75c1d7e

        SHA1

        9c3046324657505a30ecd9b1fdb46c05bde7d470

        SHA256

        6df94b7fa33f1b87142adc39b3db0613fc520d9e7a5fd6a5301dd7f51f8d0386

        SHA512

        d1ea9368f5d7166180612fd763c87afb647d088498887961f5e7fb0a10f4a808bd5928e8a3666d70ff794093c51ecca8816f75dd47652fd4eb23dce7f9aa1f98

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

        Filesize

        471KB

        MD5

        c928bc831e6ce7922c9fe238cdabb934

        SHA1

        fde9ab78e71d9800f6f2cdfb86a3f8a66d3aed52

        SHA256

        bcaf53d9cb39dc6031270bfa336d450aae0cbab112d5e7cbf369702f1a9bcf24

        SHA512

        07d7a5557bb56ceaf72c65b65c3fd5e1ddbd10dd75a5b6ac726b0e95c33eb1ea0c77f996b1969991452f12accb92c0628f68832e64c9f679450d4147ef57cf5d

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

        Filesize

        471KB

        MD5

        c928bc831e6ce7922c9fe238cdabb934

        SHA1

        fde9ab78e71d9800f6f2cdfb86a3f8a66d3aed52

        SHA256

        bcaf53d9cb39dc6031270bfa336d450aae0cbab112d5e7cbf369702f1a9bcf24

        SHA512

        07d7a5557bb56ceaf72c65b65c3fd5e1ddbd10dd75a5b6ac726b0e95c33eb1ea0c77f996b1969991452f12accb92c0628f68832e64c9f679450d4147ef57cf5d

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

        Filesize

        471KB

        MD5

        c928bc831e6ce7922c9fe238cdabb934

        SHA1

        fde9ab78e71d9800f6f2cdfb86a3f8a66d3aed52

        SHA256

        bcaf53d9cb39dc6031270bfa336d450aae0cbab112d5e7cbf369702f1a9bcf24

        SHA512

        07d7a5557bb56ceaf72c65b65c3fd5e1ddbd10dd75a5b6ac726b0e95c33eb1ea0c77f996b1969991452f12accb92c0628f68832e64c9f679450d4147ef57cf5d

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

        Filesize

        1.1MB

        MD5

        34aa912defa18c2c129f1e09d75c1d7e

        SHA1

        9c3046324657505a30ecd9b1fdb46c05bde7d470

        SHA256

        6df94b7fa33f1b87142adc39b3db0613fc520d9e7a5fd6a5301dd7f51f8d0386

        SHA512

        d1ea9368f5d7166180612fd763c87afb647d088498887961f5e7fb0a10f4a808bd5928e8a3666d70ff794093c51ecca8816f75dd47652fd4eb23dce7f9aa1f98

      • \Users\Admin\Documents\DCSCMIN\IMDCSC.exe

        Filesize

        1.1MB

        MD5

        34aa912defa18c2c129f1e09d75c1d7e

        SHA1

        9c3046324657505a30ecd9b1fdb46c05bde7d470

        SHA256

        6df94b7fa33f1b87142adc39b3db0613fc520d9e7a5fd6a5301dd7f51f8d0386

        SHA512

        d1ea9368f5d7166180612fd763c87afb647d088498887961f5e7fb0a10f4a808bd5928e8a3666d70ff794093c51ecca8816f75dd47652fd4eb23dce7f9aa1f98

      • memory/608-73-0x0000000000400000-0x0000000000458000-memory.dmp

        Filesize

        352KB

      • memory/608-100-0x0000000000400000-0x0000000000458000-memory.dmp

        Filesize

        352KB

      • memory/608-67-0x0000000000441865-mapping.dmp

      • memory/608-64-0x0000000000400000-0x0000000000458000-memory.dmp

        Filesize

        352KB

      • memory/752-107-0x0000000000000000-mapping.dmp

      • memory/872-86-0x0000000000400000-0x00000000004B2000-memory.dmp

        Filesize

        712KB

      • memory/872-72-0x0000000000400000-0x00000000004B2000-memory.dmp

        Filesize

        712KB

      • memory/872-84-0x000000000048F888-mapping.dmp

      • memory/872-110-0x0000000000400000-0x00000000004B2000-memory.dmp

        Filesize

        712KB

      • memory/872-81-0x0000000000400000-0x00000000004B2000-memory.dmp

        Filesize

        712KB

      • memory/872-78-0x0000000000400000-0x00000000004B2000-memory.dmp

        Filesize

        712KB

      • memory/872-63-0x0000000000400000-0x00000000004B2000-memory.dmp

        Filesize

        712KB

      • memory/872-79-0x0000000000400000-0x00000000004B2000-memory.dmp

        Filesize

        712KB

      • memory/872-65-0x0000000000400000-0x00000000004B2000-memory.dmp

        Filesize

        712KB

      • memory/872-93-0x0000000000400000-0x00000000004B2000-memory.dmp

        Filesize

        712KB

      • memory/872-68-0x0000000000400000-0x00000000004B2000-memory.dmp

        Filesize

        712KB

      • memory/872-76-0x0000000000400000-0x00000000004B2000-memory.dmp

        Filesize

        712KB

      • memory/872-103-0x0000000000400000-0x00000000004B2000-memory.dmp

        Filesize

        712KB

      • memory/872-83-0x0000000000400000-0x00000000004B2000-memory.dmp

        Filesize

        712KB

      • memory/972-92-0x0000000074300000-0x00000000748AB000-memory.dmp

        Filesize

        5.7MB

      • memory/972-61-0x0000000074300000-0x00000000748AB000-memory.dmp

        Filesize

        5.7MB

      • memory/972-54-0x0000000075D01000-0x0000000075D03000-memory.dmp

        Filesize

        8KB

      • memory/1260-102-0x0000000000400000-0x0000000000458000-memory.dmp

        Filesize

        352KB

      • memory/1260-96-0x0000000000441865-mapping.dmp

      • memory/1560-104-0x0000000074300000-0x00000000748AB000-memory.dmp

        Filesize

        5.7MB

      • memory/1560-89-0x0000000000000000-mapping.dmp

      • memory/1560-112-0x0000000074300000-0x00000000748AB000-memory.dmp

        Filesize

        5.7MB

      • memory/1768-75-0x0000000074300000-0x00000000748AB000-memory.dmp

        Filesize

        5.7MB

      • memory/1768-57-0x0000000000000000-mapping.dmp

      • memory/1768-111-0x0000000074300000-0x00000000748AB000-memory.dmp

        Filesize

        5.7MB