Resubmissions

05-02-2021 13:55

210205-lmm8e3abda 10

05-02-2021 13:42

210205-serhwbtcf2 10

Analysis

  • max time kernel
    145s
  • max time network
    148s
  • platform
    windows7_x64
  • resource
    win7v20201028
  • submitted
    05-02-2021 13:42

General

  • Target

    32b2d32af004b6039b73f4ccd73df2bafe7a0343.dll

  • Size

    539KB

  • MD5

    d31c0491f522d6b9f2102109bd2420af

  • SHA1

    dc1cccf0e43ec5a68326ae4faf1a8cbc5ac00708

  • SHA256

    f7c79c0c3feb7c0032424f5f6a9bcdf78d1815ee53f807cc192c2c1f8f21270f

  • SHA512

    48d659660654800da4eb3909a06572dfcf5f05ebdfb8629fafdfeab601673e3377d9a3a241f4bd36c3f4f912ac838dbc73926f734bfa8a76ec43fa726b28c3bd

Malware Config

Extracted

Family

gozi_rm3

Botnet

201193207

C2

https://topitophug.xyz

Attributes
  • build

    300932

  • exe_type

    loader

rsa_pubkey.base64
serpent.plain

Signatures

  • Gozi RM3

    A heavily modified version of Gozi using RM3 loader.

  • Blocklisted process makes network request 1 IoCs
  • Modifies Internet Explorer settings 1 TTPs 198 IoCs
  • Suspicious use of FindShellTrayWindow 8 IoCs
  • Suspicious use of SetWindowsHookEx 32 IoCs
  • Suspicious use of WriteProcessMemory 39 IoCs

Processes

  • C:\Windows\system32\rundll32.exe
    rundll32.exe C:\Users\Admin\AppData\Local\Temp\32b2d32af004b6039b73f4ccd73df2bafe7a0343.dll,#1
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:1832
    • C:\Windows\SysWOW64\rundll32.exe
      rundll32.exe C:\Users\Admin\AppData\Local\Temp\32b2d32af004b6039b73f4ccd73df2bafe7a0343.dll,#1
      2⤵
      • Blocklisted process makes network request
      PID:872
  • C:\Program Files\Internet Explorer\iexplore.exe
    "C:\Program Files\Internet Explorer\iexplore.exe" -Embedding
    1⤵
    • Modifies Internet Explorer settings
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:924
    • C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
      "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:924 CREDAT:275457 /prefetch:2
      2⤵
      • Suspicious use of SetWindowsHookEx
      PID:608
  • C:\Program Files\Internet Explorer\iexplore.exe
    "C:\Program Files\Internet Explorer\iexplore.exe" -Embedding
    1⤵
    • Modifies Internet Explorer settings
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:1300
    • C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
      "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:1300 CREDAT:275457 /prefetch:2
      2⤵
      • Suspicious use of SetWindowsHookEx
      PID:656
  • C:\Program Files\Internet Explorer\iexplore.exe
    "C:\Program Files\Internet Explorer\iexplore.exe" -Embedding
    1⤵
    • Modifies Internet Explorer settings
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:540
    • C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
      "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:540 CREDAT:275457 /prefetch:2
      2⤵
      • Suspicious use of SetWindowsHookEx
      PID:752
  • C:\Program Files\Internet Explorer\iexplore.exe
    "C:\Program Files\Internet Explorer\iexplore.exe" -Embedding
    1⤵
    • Modifies Internet Explorer settings
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:316
    • C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
      "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:316 CREDAT:275457 /prefetch:2
      2⤵
      • Suspicious use of SetWindowsHookEx
      PID:1612
  • C:\Program Files\Internet Explorer\iexplore.exe
    "C:\Program Files\Internet Explorer\iexplore.exe" -Embedding
    1⤵
    • Modifies Internet Explorer settings
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:764
    • C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
      "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:764 CREDAT:275457 /prefetch:2
      2⤵
      • Suspicious use of SetWindowsHookEx
      PID:744
  • C:\Program Files\Internet Explorer\iexplore.exe
    "C:\Program Files\Internet Explorer\iexplore.exe" -Embedding
    1⤵
    • Modifies Internet Explorer settings
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:368
    • C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
      "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:368 CREDAT:275457 /prefetch:2
      2⤵
      • Suspicious use of SetWindowsHookEx
      PID:1560
  • C:\Program Files\Internet Explorer\iexplore.exe
    "C:\Program Files\Internet Explorer\iexplore.exe" -Embedding
    1⤵
    • Modifies Internet Explorer settings
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:1616
    • C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
      "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:1616 CREDAT:275457 /prefetch:2
      2⤵
      • Suspicious use of SetWindowsHookEx
      PID:1072
  • C:\Program Files\Internet Explorer\iexplore.exe
    "C:\Program Files\Internet Explorer\iexplore.exe" -Embedding
    1⤵
    • Modifies Internet Explorer settings
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:1804
    • C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
      "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:1804 CREDAT:275457 /prefetch:2
      2⤵
      • Suspicious use of SetWindowsHookEx
      PID:1752

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • memory/872-10-0x00000000003D0000-0x00000000003D2000-memory.dmp

    Filesize

    8KB

  • memory/872-4-0x0000000000120000-0x0000000000121000-memory.dmp

    Filesize

    4KB

  • memory/872-6-0x0000000000370000-0x0000000000380000-memory.dmp

    Filesize

    64KB

  • memory/872-7-0x0000000000390000-0x00000000003A2000-memory.dmp

    Filesize

    72KB

  • memory/872-5-0x00000000002D0000-0x00000000002DE000-memory.dmp

    Filesize

    56KB

  • memory/872-3-0x0000000075DE1000-0x0000000075DE3000-memory.dmp

    Filesize

    8KB

  • memory/1300-12-0x0000000002030000-0x0000000002040000-memory.dmp

    Filesize

    64KB

  • memory/1300-11-0x000007FEFB6D1000-0x000007FEFB6D3000-memory.dmp

    Filesize

    8KB

  • memory/1472-8-0x000007FEF5D50000-0x000007FEF5FCA000-memory.dmp

    Filesize

    2.5MB