Analysis

  • max time kernel
    151s
  • max time network
    154s
  • platform
    windows7_x64
  • resource
    win7-20220901-en
  • resource tags

    arch:x64arch:x86image:win7-20220901-enlocale:en-usos:windows7-x64system
  • submitted
    23-11-2022 11:07

General

  • Target

    6df11d59c1f9ecf9f5e1dc43d0859555f78e0179c475b5d70811dc8d22326b77.exe

  • Size

    1.4MB

  • MD5

    2bcaee20d4fcb2901a9d826d3ebb2bf7

  • SHA1

    613d14de92d120a87f9dbf08750d63fa94d1036c

  • SHA256

    6df11d59c1f9ecf9f5e1dc43d0859555f78e0179c475b5d70811dc8d22326b77

  • SHA512

    355759f8df2db60c2a319028572d56228410a8efdf32d132148e3a7d2a3f6b67352f6f2a52d5399c54bde0b1ef4417fd193bcd09d547de2401fcbae8878247e5

  • SSDEEP

    24576:o4lavt0LkLL9IMixoEgea9x4Gm2wqlNi83qlsV4H0c91Ys9sRCfhCq9MmCS:/kwkn9IMHea9GGmqi8ibH0cYbhaPCS

Malware Config

Extracted

Family

darkcomet

Botnet

Guest16

C2

89.136.184.30:1604

Mutex

DC_MUTEX-1YMESL4

Attributes
  • gencode

    hMnACexJqak5

  • install

    false

  • offline_keylogger

    true

  • persistence

    false

Signatures

  • Darkcomet

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

  • Executes dropped EXE 2 IoCs
  • UPX packed file 6 IoCs

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

  • Loads dropped DLL 11 IoCs
  • Adds Run key to start application 2 TTPs 2 IoCs
  • AutoIT Executable 3 IoCs

    AutoIT scripts compiled to PE executables.

  • Suspicious use of SetThreadContext 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Modifies Internet Explorer settings 1 TTPs 34 IoCs
  • Modifies system certificate store 2 TTPs 2 IoCs
  • NTFS ADS 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 23 IoCs
  • Suspicious use of FindShellTrayWindow 1 IoCs
  • Suspicious use of SetWindowsHookEx 7 IoCs
  • Suspicious use of WriteProcessMemory 21 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\6df11d59c1f9ecf9f5e1dc43d0859555f78e0179c475b5d70811dc8d22326b77.exe
    "C:\Users\Admin\AppData\Local\Temp\6df11d59c1f9ecf9f5e1dc43d0859555f78e0179c475b5d70811dc8d22326b77.exe"
    1⤵
    • Loads dropped DLL
    • Adds Run key to start application
    • Suspicious use of SetThreadContext
    • NTFS ADS
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:1444
    • C:\Users\Admin\AppData\Local\TempDropboxInstaller.exe
      "C:\Users\Admin\AppData\Local\TempDropboxInstaller.exe"
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Modifies system certificate store
      • Suspicious use of WriteProcessMemory
      PID:1120
      • C:\Program Files\Internet Explorer\iexplore.exe
        "C:\Program Files\Internet Explorer\iexplore.exe" http://www.dropbox.com/downloading?plat=win&full=1
        3⤵
        • Modifies Internet Explorer settings
        • Suspicious use of FindShellTrayWindow
        • Suspicious use of SetWindowsHookEx
        • Suspicious use of WriteProcessMemory
        PID:972
        • C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
          "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:972 CREDAT:275457 /prefetch:2
          4⤵
          • Modifies Internet Explorer settings
          • Suspicious use of SetWindowsHookEx
          PID:1816
    • C:\Users\Admin\AppData\Local\Temp\6df11d59c1f9ecf9f5e1dc43d0859555f78e0179c475b5d70811dc8d22326b77.exe
      "C:\Users\Admin\AppData\Local\Temp\6df11d59c1f9ecf9f5e1dc43d0859555f78e0179c475b5d70811dc8d22326b77.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of SetWindowsHookEx
      PID:1864

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\B398B80134F72209547439DB21AB308D_A4CF52CCA82D7458083F7280801A3A04

    Filesize

    471B

    MD5

    ea353da5610335f72ab72db792108eb9

    SHA1

    462086dfa527235f1ffc1002e1fe524966a7731e

    SHA256

    649e9c3a700180ffa70c10a4ac759ce60995d0d0602064199e8489b8e37c7718

    SHA512

    a438be53d03d380c138a6e74f63e090a3a93f822c82ca150ee32e79c1406003f56e759932f9103b38d1808480dd3814c3f65336727a8d41ee33c7ede69948d2e

  • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\E573CDF4C6D731D56A665145182FD759_0CEBF833D8869122FFACBB9972787B0D

    Filesize

    471B

    MD5

    690c57543878611bc45e3358c9348143

    SHA1

    ac122b50be030d7dd60209ebf586b5196a1e3575

    SHA256

    7abd3b1e458e3efc7a79a66b8538cc6806f18b1e86d3aa8da0ea4b26600416fe

    SHA512

    4cf10f3181cc144defc4caf653684750d6cfbe30089239a667d2a88f69174ec3fe515f76863ec8be5f8de93b3ed068dbdf223db13c2da99f6bce12d6494bae1a

  • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015

    Filesize

    344B

    MD5

    d943b0d311587ce6147c3beefceff365

    SHA1

    5defdc088df13c7ebf5390cdc6571f3e73469c80

    SHA256

    114399f625e72f358b6e7e0d11827937d5413dd38fe51bba1596d3192b1a5b62

    SHA512

    b3f0562a180e12fd1bd2b8fea9128ee43c2e5cde45f937b423196dd9e5995103134d445ce50811c853ba5fcd5e62c8aa9e5d39f3844eeff997187b36b1b3e5a1

  • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\B398B80134F72209547439DB21AB308D_A4CF52CCA82D7458083F7280801A3A04

    Filesize

    430B

    MD5

    3f4546062064c226e8e2b244d07e364d

    SHA1

    779014ae54fd3bc11ba24ade0f79f8d242d8609b

    SHA256

    7d9d4050d7cfaf6c17fadb0ec38390f1b8145a945d6c928c8e7acce558ce3c98

    SHA512

    4d72df2a4816a6a926a81e919cc8d4ea2c6c57ee1d0d7b702755d6f595c1465cbe7aa171b74ec676ba64330f60ea34d27c8b2fb02eb6efbd2b74515a30e248ef

  • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\E573CDF4C6D731D56A665145182FD759_0CEBF833D8869122FFACBB9972787B0D

    Filesize

    430B

    MD5

    6976dd693999fb7c62fcffa26511f4ff

    SHA1

    b90583fbfa85c8d9b677a7e01fc8444c8ddebf6a

    SHA256

    ba1496c11ce90e24a910378875212873e05de10b591020c887fa3480fff07601

    SHA512

    ad70f8ae89d2f1adbf8c7de3fc4fb2a28bfa3f0ed4fa954685c099a9c5a8add390478c4e1789ecda63ae8aa4fdc743bcc645dfb9efeebb0de39316b3c32fde01

  • C:\Users\Admin\AppData\Local\TempDropboxInstaller.exe

    Filesize

    316KB

    MD5

    e4f4745c5f4ad478ec15b3a25f62f35b

    SHA1

    715bf92805761b04915ebc3a5ca0723dd9e7297c

    SHA256

    c1d1db8a30e6679f65eb3e4f5593b572b4295ab42a4e62de2c569570d652120a

    SHA512

    c13790be0e3a3b68190dfa848b53b5c69470cd45558b7cd4e096ba3d71d93709b6a41f98ff28f49efcf9e93f22056134ac937a417573f9bb448319035f8fb76c

  • C:\Users\Admin\AppData\Local\TempDropboxInstaller.exe

    Filesize

    316KB

    MD5

    e4f4745c5f4ad478ec15b3a25f62f35b

    SHA1

    715bf92805761b04915ebc3a5ca0723dd9e7297c

    SHA256

    c1d1db8a30e6679f65eb3e4f5593b572b4295ab42a4e62de2c569570d652120a

    SHA512

    c13790be0e3a3b68190dfa848b53b5c69470cd45558b7cd4e096ba3d71d93709b6a41f98ff28f49efcf9e93f22056134ac937a417573f9bb448319035f8fb76c

  • C:\Users\Admin\AppData\Local\Temp\6df11d59c1f9ecf9f5e1dc43d0859555f78e0179c475b5d70811dc8d22326b77.exe

    Filesize

    1.4MB

    MD5

    2bcaee20d4fcb2901a9d826d3ebb2bf7

    SHA1

    613d14de92d120a87f9dbf08750d63fa94d1036c

    SHA256

    6df11d59c1f9ecf9f5e1dc43d0859555f78e0179c475b5d70811dc8d22326b77

    SHA512

    355759f8df2db60c2a319028572d56228410a8efdf32d132148e3a7d2a3f6b67352f6f2a52d5399c54bde0b1ef4417fd193bcd09d547de2401fcbae8878247e5

  • C:\Users\Admin\AppData\Local\Temp\6df11d59c1f9ecf9f5e1dc43d0859555f78e0179c475b5d70811dc8d22326b77.exe

    Filesize

    1.4MB

    MD5

    2bcaee20d4fcb2901a9d826d3ebb2bf7

    SHA1

    613d14de92d120a87f9dbf08750d63fa94d1036c

    SHA256

    6df11d59c1f9ecf9f5e1dc43d0859555f78e0179c475b5d70811dc8d22326b77

    SHA512

    355759f8df2db60c2a319028572d56228410a8efdf32d132148e3a7d2a3f6b67352f6f2a52d5399c54bde0b1ef4417fd193bcd09d547de2401fcbae8878247e5

  • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Cookies\F2ETCL7G.txt

    Filesize

    608B

    MD5

    3a9c79d5745b7633ddccc21cce98910b

    SHA1

    fbfd5f12dacd5659f3c69afeb4822b4f70007113

    SHA256

    ee86f0f9d8e8b8f3c77b52e7e16a3651a62aadebb3e1d1f8df06ba201e4b5b05

    SHA512

    bf175350f92ff947aa3f7a3191920ec8bdce3c69e5686b1f2a1e01238e590306a31e0b9f639448a54798e103f5ceded9b14b32a8b94e380d8fe5e4770e13e99d

  • \Users\Admin\AppData\Local\TempDropboxInstaller.exe

    Filesize

    316KB

    MD5

    e4f4745c5f4ad478ec15b3a25f62f35b

    SHA1

    715bf92805761b04915ebc3a5ca0723dd9e7297c

    SHA256

    c1d1db8a30e6679f65eb3e4f5593b572b4295ab42a4e62de2c569570d652120a

    SHA512

    c13790be0e3a3b68190dfa848b53b5c69470cd45558b7cd4e096ba3d71d93709b6a41f98ff28f49efcf9e93f22056134ac937a417573f9bb448319035f8fb76c

  • \Users\Admin\AppData\Local\TempDropboxInstaller.exe

    Filesize

    316KB

    MD5

    e4f4745c5f4ad478ec15b3a25f62f35b

    SHA1

    715bf92805761b04915ebc3a5ca0723dd9e7297c

    SHA256

    c1d1db8a30e6679f65eb3e4f5593b572b4295ab42a4e62de2c569570d652120a

    SHA512

    c13790be0e3a3b68190dfa848b53b5c69470cd45558b7cd4e096ba3d71d93709b6a41f98ff28f49efcf9e93f22056134ac937a417573f9bb448319035f8fb76c

  • \Users\Admin\AppData\Local\TempDropboxInstaller.exe

    Filesize

    316KB

    MD5

    e4f4745c5f4ad478ec15b3a25f62f35b

    SHA1

    715bf92805761b04915ebc3a5ca0723dd9e7297c

    SHA256

    c1d1db8a30e6679f65eb3e4f5593b572b4295ab42a4e62de2c569570d652120a

    SHA512

    c13790be0e3a3b68190dfa848b53b5c69470cd45558b7cd4e096ba3d71d93709b6a41f98ff28f49efcf9e93f22056134ac937a417573f9bb448319035f8fb76c

  • \Users\Admin\AppData\Local\TempDropboxInstaller.exe

    Filesize

    316KB

    MD5

    e4f4745c5f4ad478ec15b3a25f62f35b

    SHA1

    715bf92805761b04915ebc3a5ca0723dd9e7297c

    SHA256

    c1d1db8a30e6679f65eb3e4f5593b572b4295ab42a4e62de2c569570d652120a

    SHA512

    c13790be0e3a3b68190dfa848b53b5c69470cd45558b7cd4e096ba3d71d93709b6a41f98ff28f49efcf9e93f22056134ac937a417573f9bb448319035f8fb76c

  • \Users\Admin\AppData\Local\Temp\6df11d59c1f9ecf9f5e1dc43d0859555f78e0179c475b5d70811dc8d22326b77.exe

    Filesize

    1.4MB

    MD5

    2bcaee20d4fcb2901a9d826d3ebb2bf7

    SHA1

    613d14de92d120a87f9dbf08750d63fa94d1036c

    SHA256

    6df11d59c1f9ecf9f5e1dc43d0859555f78e0179c475b5d70811dc8d22326b77

    SHA512

    355759f8df2db60c2a319028572d56228410a8efdf32d132148e3a7d2a3f6b67352f6f2a52d5399c54bde0b1ef4417fd193bcd09d547de2401fcbae8878247e5

  • \Users\Admin\AppData\Local\Temp\nstFE9D.tmp\Banner.dll

    Filesize

    3KB

    MD5

    e2fc789b98ffc7ab7934305e84c5da9f

    SHA1

    416454e167bd7a76aed5af6fa219b45a03abe5e4

    SHA256

    24578d4ab85113af57ecdd64b4058ccfd16795b32f35a9db4a23cc19eaa0bd72

    SHA512

    7d0570901703eb63a5f5ba02abef567f1b8b44a40b9d445a1b79f979af55b3fc77e238c9069b844f60f4e18eab56e68e2e56558b3c5f7a813d11c1e00e1288f5

  • \Users\Admin\AppData\Local\Temp\nstFE9D.tmp\DropboxNSISTools.dll

    Filesize

    66KB

    MD5

    c215de00fc5fbabee4f06fc0c9224f54

    SHA1

    a99de940f0d0f7cad354b7caea580621ad314a1c

    SHA256

    f878819aa3d8081de795c015357408e979208525c7b130b92db557f8944221b6

    SHA512

    36d935ceccbadf41180aba2ed9677a3810d5b49842055d663f806ef82f298d2f225a028f3e166c0e75661f02305ce2894b965c636e976cd2794159a53c31d193

  • \Users\Admin\AppData\Local\Temp\nstFE9D.tmp\Inetc.dll

    Filesize

    62KB

    MD5

    0b25c8344b98ce5db4f8acc4a72ee9d9

    SHA1

    ab862aed20769e3a25d28c3a65128df7b0934097

    SHA256

    f2600a22661cdef495c6b4c19ed587e6780878d4a87f756e16fbeb8d812d20ec

    SHA512

    4e1914a566a9ef77eff3ee8efe3f138fa71deec5959379bc01e549d3b436bee0398e78d2ebbbf9a9ed0ebab47d32216685870a65b18e2612b7ff5a31803170f0

  • \Users\Admin\AppData\Local\Temp\nstFE9D.tmp\System.dll

    Filesize

    11KB

    MD5

    dbd31dec996410c5424655b290084cd7

    SHA1

    8517b1ffdf5bc5390956be4668adb51317fc069e

    SHA256

    ee4130a867c00861ec8da4d3ec2df03ce2856292e7d877e032584e564075cca3

    SHA512

    fa28d94f84bbec194ad2c42919f8c0bc5d4e589566e7db78b791b9c36e632cedc81e5d87f737f754d2ba8cc2091f8ea4f412bf2249662f0c1e15b42660820919

  • \Users\Admin\AppData\Local\Temp\nstFE9D.tmp\UAC.dll

    Filesize

    29KB

    MD5

    fc38d5993ec3c029e2a9d9068d3eb146

    SHA1

    80246043884ae50f90bd77fbe9a823de7ea7e326

    SHA256

    97c46f2c5b4a09317d2d2fd8272f2bb36cbb9d25f5003cc69908c49c18128a9e

    SHA512

    83b495210158b5084ff917fb3152b8b82fdbcc0fb2768145f32646c33294dae6d1987142908b7a52f5f736e5227f977a39d4a41b9052e89a83ef6dd1bf350c07

  • \Users\Admin\AppData\Local\Temp\nstFE9D.tmp\nsisFile.dll

    Filesize

    9KB

    MD5

    542a3952918d265f0cc7a389980f36d6

    SHA1

    7e703bb6ad59e61c1bd6d77dbe08762ec380f83c

    SHA256

    bf30dc12e86aa14a677efda77c63bfb5963672ae4c48dbdf781b85cfe5f26d3e

    SHA512

    6d28f4b17a1069a62a5da20a5ae9dcb0fd4920bc60a1ec8b27ba7ed060b92ed2d7032010fa5881d51aa6316d41b096041f907c8a051fc4e93397397f04fe4938

  • memory/1120-82-0x0000000002EA0000-0x0000000002EB4000-memory.dmp

    Filesize

    80KB

  • memory/1120-79-0x0000000003B00000-0x0000000003B36000-memory.dmp

    Filesize

    216KB

  • memory/1120-59-0x0000000000000000-mapping.dmp

  • memory/1444-54-0x0000000075D71000-0x0000000075D73000-memory.dmp

    Filesize

    8KB

  • memory/1864-83-0x0000000000400000-0x00000000004B7000-memory.dmp

    Filesize

    732KB

  • memory/1864-72-0x0000000000400000-0x00000000004B7000-memory.dmp

    Filesize

    732KB

  • memory/1864-74-0x0000000000400000-0x00000000004B7000-memory.dmp

    Filesize

    732KB

  • memory/1864-69-0x0000000000400000-0x00000000004B7000-memory.dmp

    Filesize

    732KB

  • memory/1864-67-0x00000000004B5650-mapping.dmp

  • memory/1864-66-0x0000000000400000-0x00000000004B7000-memory.dmp

    Filesize

    732KB

  • memory/1864-64-0x0000000000400000-0x00000000004B7000-memory.dmp

    Filesize

    732KB

  • memory/1864-76-0x0000000000400000-0x00000000004B7000-memory.dmp

    Filesize

    732KB