Analysis

  • max time kernel
    145s
  • max time network
    147s
  • platform
    windows10_x64
  • resource
    win10v20210410
  • submitted
    06-07-2021 16:21

General

  • Target

    a58f423a00ca933ae2898803bd1b3a07a2cd76ef1aa0d5de69905d80a096874c.dll

  • Size

    306KB

  • MD5

    98d030eeefc3536d68ccb9ae3a2d1502

  • SHA1

    9f7d95691e0116f7c0d0f222de2149b073ef6cb6

  • SHA256

    a58f423a00ca933ae2898803bd1b3a07a2cd76ef1aa0d5de69905d80a096874c

  • SHA512

    bbfbd2525c24a5c0474d001f61edabed1ff05f83fb574eb16790e36298da80d8a56d10f28582340f438a3483d232a4efd19055b687fc773aef25856148c2ba52

Malware Config

Extracted

Family

gozi_ifsb

Botnet

6000

C2

authd.feronok.com

app.bighomegl.at

Attributes
  • build

    250204

  • exe_type

    loader

  • server_id

    580

rsa_pubkey.plain
aes.plain

Signatures

  • Gozi, Gozi IFSB

    Gozi ISFB is a well-known and widely distributed banking trojan.

  • Modifies Internet Explorer settings 1 TTPs 12 IoCs
  • Suspicious use of FindShellTrayWindow 1 IoCs
  • Suspicious use of SetWindowsHookEx 4 IoCs
  • Suspicious use of WriteProcessMemory 6 IoCs

Processes

  • C:\Windows\SysWOW64\rundll32.exe
    rundll32.exe C:\Users\Admin\AppData\Local\Temp\a58f423a00ca933ae2898803bd1b3a07a2cd76ef1aa0d5de69905d80a096874c.dll,#1
    1⤵
      PID:3764
    • C:\Windows\system32\rundll32.exe
      rundll32.exe C:\Users\Admin\AppData\Local\Temp\a58f423a00ca933ae2898803bd1b3a07a2cd76ef1aa0d5de69905d80a096874c.dll,#1
      1⤵
      • Suspicious use of WriteProcessMemory
      PID:1832
    • 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:1172
      • C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
        "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:1172 CREDAT:82945 /prefetch:2
        2⤵
        • Modifies Internet Explorer settings
        • Suspicious use of SetWindowsHookEx
        PID:2140

    Network

    MITRE ATT&CK Matrix ATT&CK v6

    Defense Evasion

    Modify Registry

    1
    T1112

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • memory/1172-119-0x00007FFCC8390000-0x00007FFCC83FB000-memory.dmp
      Filesize

      428KB

    • memory/2140-120-0x0000000000000000-mapping.dmp
    • memory/3764-114-0x0000000000000000-mapping.dmp
    • memory/3764-115-0x0000000000950000-0x00000000009FE000-memory.dmp
      Filesize

      696KB

    • memory/3764-117-0x0000000074120000-0x000000007420A000-memory.dmp
      Filesize

      936KB

    • memory/3764-116-0x0000000074120000-0x000000007412D000-memory.dmp
      Filesize

      52KB