Resubmissions

15-01-2021 12:26

210115-a3nn9s19sj 8

13-01-2021 13:59

210113-3yvrvt2h76 8

Analysis

  • max time kernel
    133s
  • max time network
    112s
  • platform
    windows10_x64
  • resource
    win10v20201028
  • submitted
    15-01-2021 12:26

General

  • Target

    invoice.exe

  • Size

    605KB

  • MD5

    9d1c09ccad422151959b7f47a88e70bf

  • SHA1

    5766569901c1a6c583f3dbde63b6971ecbe7b129

  • SHA256

    514a2e1ebfc231e3bd8275f2f51023e418deeb2aeda808dd35e8317424370a30

  • SHA512

    bd5e2693d8aa553225479010a1f78c1643478ca8a83139faefa68aae353dd8e92d084436d0a7c259f00d1564d8a0d302a808cbd6c43ed0cb6f669df1e49cbbd7

Score
8/10

Malware Config

Signatures

  • Drops file in Drivers directory 1 IoCs
  • Reads data files stored by FTP clients 2 TTPs

    Tries to access configuration files associated with programs like FileZilla.

  • Reads user/profile data of local email clients 2 TTPs

    Email clients store some user data on disk where infostealers will often target it.

  • Reads user/profile data of web browsers 2 TTPs

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

  • Suspicious use of SetThreadContext 1 IoCs
  • Creates scheduled task(s) 1 TTPs 1 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 11 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\invoice.exe
    "C:\Users\Admin\AppData\Local\Temp\invoice.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:4052
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\mEIuqNly" /XML "C:\Users\Admin\AppData\Local\Temp\tmpB1C1.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:2744
    • C:\Users\Admin\AppData\Local\Temp\invoice.exe
      "{path}"
      2⤵
      • Drops file in Drivers directory
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:3712

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\invoice.exe.log

    MD5

    0c2899d7c6746f42d5bbe088c777f94c

    SHA1

    622f66c5f7a3c91b28a9f43ce7c6cabadbf514f1

    SHA256

    5b0b99740cadaeff7b9891136644b396941547e20cc7eea646560d0dad5a5458

    SHA512

    ab7a3409ed4b6ca00358330a3aa4ef6de7d81eb21a5e24bb629ef6a7c7c4e2a70ca3accfbc989ed6e495fdb8eb6203a26d6f2a37b2a5809af4276af375b49078

  • C:\Users\Admin\AppData\Local\Temp\tmpB1C1.tmp

    MD5

    cec793552cf6ac10829e978f11b584e8

    SHA1

    0320ddb79cbc0af49310dd421a0d791a83e1b5da

    SHA256

    d6b83e575a898310a06dd4eeb0b169548177b2e1c2e3760e22dee3f0cabca768

    SHA512

    e9458277fa8e9ce2bfc13752f935adbc80497fe6162b71b54e96b50e1b7d45695e74289c9a3627ebdb97d0cf1830e669c19124f98769b297525e8c2f527e031c

  • memory/2744-11-0x0000000000000000-mapping.dmp

  • memory/3712-13-0x0000000000400000-0x000000000043C000-memory.dmp

    Filesize

    240KB

  • memory/3712-22-0x0000000005920000-0x0000000005921000-memory.dmp

    Filesize

    4KB

  • memory/3712-21-0x0000000005080000-0x0000000005081000-memory.dmp

    Filesize

    4KB

  • memory/3712-16-0x0000000073820000-0x0000000073F0E000-memory.dmp

    Filesize

    6.9MB

  • memory/3712-14-0x0000000000436DAE-mapping.dmp

  • memory/4052-5-0x0000000005080000-0x0000000005081000-memory.dmp

    Filesize

    4KB

  • memory/4052-6-0x0000000004B80000-0x0000000004B81000-memory.dmp

    Filesize

    4KB

  • memory/4052-2-0x0000000073820000-0x0000000073F0E000-memory.dmp

    Filesize

    6.9MB

  • memory/4052-10-0x0000000005970000-0x0000000005971000-memory.dmp

    Filesize

    4KB

  • memory/4052-3-0x0000000000070000-0x0000000000071000-memory.dmp

    Filesize

    4KB

  • memory/4052-9-0x0000000005830000-0x00000000058B7000-memory.dmp

    Filesize

    540KB

  • memory/4052-8-0x0000000004CA0000-0x0000000004CAE000-memory.dmp

    Filesize

    56KB

  • memory/4052-7-0x0000000004C20000-0x0000000004C21000-memory.dmp

    Filesize

    4KB