Analysis

  • max time kernel
    31s
  • max time network
    133s
  • platform
    windows7_x64
  • resource
    win7-20230220-en
  • resource tags

    arch:x64arch:x86image:win7-20230220-enlocale:en-usos:windows7-x64system
  • submitted
    08/05/2023, 23:34

General

  • Target

    1053637a1f1797e331ba303af0c5262274b48d55db9b125cf0a1e045b3231a74.exe

  • Size

    63KB

  • MD5

    337d1fbca713a6041f733027fbf732ef

  • SHA1

    4d6fffce0be110713795e72cf60c659d88141071

  • SHA256

    1053637a1f1797e331ba303af0c5262274b48d55db9b125cf0a1e045b3231a74

  • SHA512

    ca9add3e63a915a8ccb23b5f0ac698c78f189bacfb283aa479304f06ad6bb53441e8e5b29c173cfcc95a7f2348b765258e45a1055a2ba4ae251c2e833565250c

  • SSDEEP

    768:q0/ZcgPitymsY8bhD+BePbrGMff+L1WVbh9yTiGp9jju9Zp:bxPiAZbPPebWVb9G9j4

Malware Config

Extracted

Credentials

  • Protocol:
    smtp
  • Host:
    smtp.gmail.com
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    rwxbewqtbkpqpnbb

Signatures

  • Executes dropped EXE 1 IoCs
  • Reads user/profile data of web browsers 2 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • Adds Run key to start application 2 TTPs 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Modifies system certificate store 2 TTPs 6 IoCs
  • Suspicious behavior: CmdExeWriteProcessMemorySpam 1 IoCs
  • Suspicious behavior: RenamesItself 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 10 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\1053637a1f1797e331ba303af0c5262274b48d55db9b125cf0a1e045b3231a74.exe
    "C:\Users\Admin\AppData\Local\Temp\1053637a1f1797e331ba303af0c5262274b48d55db9b125cf0a1e045b3231a74.exe"
    1⤵
    • Suspicious behavior: RenamesItself
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2040
    • C:\Windows\System32\cmd.exe
      "C:\Windows\System32\cmd.exe" cmd /c bfsvc.exe "true" "true" "true" "true"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:880
      • C:\Users\Admin\AppData\Local\Temp\bfsvc.exe
        bfsvc.exe "true" "true" "true" "true"
        3⤵
        • Executes dropped EXE
        • Modifies system certificate store
        • Suspicious behavior: CmdExeWriteProcessMemorySpam
        • Suspicious use of AdjustPrivilegeToken
        PID:584
    • C:\Users\Admin\AppData\Roaming\1053637a1f1797e331ba303af0c5262274b48d55db9b125cf0a1e045b3231a74.exe
      "C:\Users\Admin\AppData\Roaming\1053637a1f1797e331ba303af0c5262274b48d55db9b125cf0a1e045b3231a74.exe" C:\Users\Admin\AppData\Local\Temp\1053637a1f1797e331ba303af0c5262274b48d55db9b125cf0a1e045b3231a74.exe
      2⤵
      • Adds Run key to start application
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of SetWindowsHookEx
      PID:112

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

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

    Filesize

    62KB

    MD5

    3ac860860707baaf32469fa7cc7c0192

    SHA1

    c33c2acdaba0e6fa41fd2f00f186804722477639

    SHA256

    d015145d551ecd14916270efad773bbc9fd57fad2228d2c24559f696c961d904

    SHA512

    d62ad2408c969a95550fb87efda50f988770ba5e39972041bf85924275baf156b8bec309ecc6409e5acdd37ec175dea40eff921ab58933b5b5b5d35a6147567c

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

    Filesize

    344B

    MD5

    df90e1beab2f5b6a85057c63b8169969

    SHA1

    26ab49d91711e36e8fa8a876d06ca81ec13ae778

    SHA256

    c2e143ab0e6aa8c9f3920fd028ec6b8786c017cf6c021f9ed4be9817c5aea9a7

    SHA512

    41b055380e93c8ee80e23cdadadb3fd60d626f9feaed8f34dac9d727c2f2331be8cc076d192261eb5771675b677694ec44a6057292b8db8bd16b2fd77e7b54ff

  • C:\Users\Admin\AppData\Local\Temp\Cab3E6A.tmp

    Filesize

    61KB

    MD5

    fc4666cbca561e864e7fdf883a9e6661

    SHA1

    2f8d6094c7a34bf12ea0bbf0d51ee9c5bb7939a5

    SHA256

    10f3deb6c452d749a7451b5d065f4c0449737e5ee8a44f4d15844b503141e65b

    SHA512

    c71f54b571e01f247f072be4bbebdf5d8410b67eb79a61e7e0d9853fe857ab9bd12f53e6af3394b935560178107291fc4be351b27deb388eba90ba949633d57d

  • C:\Users\Admin\AppData\Local\Temp\Tar3FD8.tmp

    Filesize

    164KB

    MD5

    4ff65ad929cd9a367680e0e5b1c08166

    SHA1

    c0af0d4396bd1f15c45f39d3b849ba444233b3a2

    SHA256

    c8733c93cc5aaf5ca206d06af22ee8dbdec764fb5085019a6a9181feb9dfdee6

    SHA512

    f530dc0d024a5a3b8903ffaaa41b608a5ccdd6da4ba1949f2c2e55a9fca475fec5c8d2119b5763cabe7ef1c3788fb9dcac621869db51d65b1d83cfe404fb4c27

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

    Filesize

    7KB

    MD5

    7bfcf811a47c0ca77ee2c95333f0476e

    SHA1

    f3580c33ae27018d627ea12ffc41fb925367524f

    SHA256

    f740df4d3a6c0b378116b48c1ed18a36e82938cf7dcaaba58f0ba8101f3e3531

    SHA512

    4386eb26bad23945ac7fe71a226a8f6a5a261f7e704e2389b360ad6f0864460137fbf95bc51abb3e90beb8328d4e854d7b5b0f04383a5460cc6dea5f28529c3b

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

    Filesize

    7KB

    MD5

    7bfcf811a47c0ca77ee2c95333f0476e

    SHA1

    f3580c33ae27018d627ea12ffc41fb925367524f

    SHA256

    f740df4d3a6c0b378116b48c1ed18a36e82938cf7dcaaba58f0ba8101f3e3531

    SHA512

    4386eb26bad23945ac7fe71a226a8f6a5a261f7e704e2389b360ad6f0864460137fbf95bc51abb3e90beb8328d4e854d7b5b0f04383a5460cc6dea5f28529c3b

  • memory/112-140-0x000000001AE40000-0x000000001AEC0000-memory.dmp

    Filesize

    512KB

  • memory/584-60-0x0000000001180000-0x0000000001188000-memory.dmp

    Filesize

    32KB

  • memory/584-61-0x00000000045F0000-0x0000000004630000-memory.dmp

    Filesize

    256KB

  • memory/2040-54-0x0000000000090000-0x00000000000A6000-memory.dmp

    Filesize

    88KB

  • memory/2040-55-0x000000001AFE0000-0x000000001B060000-memory.dmp

    Filesize

    512KB

  • memory/2040-139-0x000000001AFE0000-0x000000001B060000-memory.dmp

    Filesize

    512KB