Analysis

  • max time kernel
    142s
  • max time network
    144s
  • platform
    windows10_x64
  • resource
    win10v20210410
  • submitted
    28-07-2021 05:20

General

  • Target

    direct.ps1

  • Size

    264B

  • MD5

    bc63701022e39b52b73a21448e6b5973

  • SHA1

    0195f5f6163eddc5676e357b8e76aa2fa5bf013e

  • SHA256

    38cd03b944e9368f595347945a7a3a3fd657601578fbd74f5954875f0db15644

  • SHA512

    529d35828dfd0b8b5c380b8d11cf91c1e55d4f55c274929372ff210352519d4b0792fbe67f453d3296e2d38a1e2cdf4070d85028034556d5009d943957884f3c

Malware Config

Extracted

Family

gozi_ifsb

Botnet

7410

C2

signin.microsoft.com

alliances.bar

allianceline.bar

alliancer.bar

Attributes
  • build

    250206

  • dns_servers

    107.174.86.134

    107.175.127.22

  • exe_type

    loader

  • server_id

    12

rsa_pubkey.plain
serpent.plain

Signatures

  • Gozi, Gozi IFSB

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

  • suricata: ET MALWARE Ursnif Variant CnC Beacon - URI Struct M1 (_2B)
  • suricata: ET MALWARE Ursnif Variant CnC Beacon - URI Struct M2 (_2F)
  • Blocklisted process makes network request 3 IoCs
  • Downloads MZ/PE file
  • Loads dropped DLL 1 IoCs
  • Modifies Internet Explorer settings 1 TTPs 64 IoCs
  • Suspicious behavior: EnumeratesProcesses 3 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of FindShellTrayWindow 4 IoCs
  • Suspicious use of SetWindowsHookEx 16 IoCs
  • Suspicious use of WriteProcessMemory 17 IoCs

Processes

  • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    powershell.exe -ExecutionPolicy bypass -File C:\Users\Admin\AppData\Local\Temp\direct.ps1
    1⤵
    • Blocklisted process makes network request
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:3968
    • C:\Windows\System32\rundll32.exe
      "C:\Windows\System32\rundll32.exe" C:\Users\Admin\AppData\Local\Temp\KkV.bin,DllRegisterServer
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:3808
      • C:\Windows\SysWOW64\rundll32.exe
        "C:\Windows\System32\rundll32.exe" C:\Users\Admin\AppData\Local\Temp\KkV.bin,DllRegisterServer
        3⤵
        • Blocklisted process makes network request
        • Loads dropped DLL
        PID:3980
  • 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:4048
    • C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
      "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:4048 CREDAT:82945 /prefetch:2
      2⤵
      • Modifies Internet Explorer settings
      • Suspicious use of SetWindowsHookEx
      PID:2408
  • 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:856
    • C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
      "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:856 CREDAT:82945 /prefetch:2
      2⤵
      • Modifies Internet Explorer settings
      • Suspicious use of SetWindowsHookEx
      PID:2596
  • 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:3872
    • C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
      "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:3872 CREDAT:82945 /prefetch:2
      2⤵
      • Suspicious use of SetWindowsHookEx
      PID:3344
  • 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:2224
    • C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
      "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:2224 CREDAT:82945 /prefetch:2
      2⤵
      • Modifies Internet Explorer settings
      • Suspicious use of SetWindowsHookEx
      PID:2064

Network

MITRE ATT&CK Matrix ATT&CK v6

Defense Evasion

Modify Registry

1
T1112

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\KkV.bin
    MD5

    499200f6a8e223c057c6e16701740721

    SHA1

    ef46f9c62b94715b750173074c51100285ff6fe9

    SHA256

    d7e64f8e65ce586ce2f0a857810b2a23f85140bf5e52e5a824f09787fb2bf45e

    SHA512

    b32e3c480c7533d6fa745b3d22bf7d7bed1d0f52452b77c8232560e3d3e8979db53e0e45eb47e81757b6f20cfa01b20c55d5e63f423d89666ee74e6c9988a511

  • \Users\Admin\AppData\Local\Temp\KkV.bin
    MD5

    499200f6a8e223c057c6e16701740721

    SHA1

    ef46f9c62b94715b750173074c51100285ff6fe9

    SHA256

    d7e64f8e65ce586ce2f0a857810b2a23f85140bf5e52e5a824f09787fb2bf45e

    SHA512

    b32e3c480c7533d6fa745b3d22bf7d7bed1d0f52452b77c8232560e3d3e8979db53e0e45eb47e81757b6f20cfa01b20c55d5e63f423d89666ee74e6c9988a511

  • memory/856-139-0x00007FFDD61F0000-0x00007FFDD625B000-memory.dmp
    Filesize

    428KB

  • memory/2064-144-0x0000000000000000-mapping.dmp
  • memory/2224-143-0x00007FFDD61F0000-0x00007FFDD625B000-memory.dmp
    Filesize

    428KB

  • memory/2408-138-0x0000000000000000-mapping.dmp
  • memory/2596-140-0x0000000000000000-mapping.dmp
  • memory/3344-142-0x0000000000000000-mapping.dmp
  • memory/3808-129-0x0000000000000000-mapping.dmp
  • memory/3872-141-0x00007FFDD61F0000-0x00007FFDD625B000-memory.dmp
    Filesize

    428KB

  • memory/3968-118-0x0000012E6FEF0000-0x0000012E6FEF2000-memory.dmp
    Filesize

    8KB

  • memory/3968-124-0x0000012E70230000-0x0000012E70231000-memory.dmp
    Filesize

    4KB

  • memory/3968-133-0x0000012E6FEF6000-0x0000012E6FEF8000-memory.dmp
    Filesize

    8KB

  • memory/3968-120-0x0000012E6FE00000-0x0000012E6FE01000-memory.dmp
    Filesize

    4KB

  • memory/3968-119-0x0000012E6FEF3000-0x0000012E6FEF5000-memory.dmp
    Filesize

    8KB

  • memory/3980-132-0x0000000000000000-mapping.dmp
  • memory/3980-136-0x0000000010000000-0x0000000010090000-memory.dmp
    Filesize

    576KB

  • memory/3980-135-0x0000000000A50000-0x0000000000A51000-memory.dmp
    Filesize

    4KB

  • memory/4048-137-0x00007FFDD5A40000-0x00007FFDD5AAB000-memory.dmp
    Filesize

    428KB