Analysis

  • max time kernel
    28s
  • max time network
    151s
  • platform
    windows7_x64
  • resource
    win7-20230621-en
  • resource tags

    arch:x64arch:x86image:win7-20230621-enlocale:en-usos:windows7-x64system
  • submitted
    01-07-2023 10:08

General

  • Target

    oreki.exe

  • Size

    673KB

  • MD5

    2284c315e2528e666ade79b75a0371cd

  • SHA1

    47e5af85d7ee5f3742837fbfe7f088f954e4ccac

  • SHA256

    ec36faf4a4d8329b10ac75b3b6c815cd041c62918eb1c9efb7adeea8e88e8744

  • SHA512

    cc0b76f20e36fe8425742715f87a0364c371ca6b4557ad754a9b802cbaa556f59fa8d3adabdba0081f8ae64cdfe402104fa56822c5e76d06517c58fce28426a0

  • SSDEEP

    12288:w4cVWcj9yXy13MiG6UvbZ61pccDFT0iqgsI8em8O+1qI:w4apyCOZuCc9LHm8O+

Malware Config

Signatures

  • Blackmoon, KrBanker

    Blackmoon also known as KrBanker is banking trojan first discovered in early 2014.

  • Detect Blackmoon payload 2 IoCs
  • Modifies RDP port number used by Windows 1 TTPs
  • Drops startup file 1 IoCs
  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 2 IoCs
  • UPX packed file 3 IoCs

    Detects executables packed with UPX/modified UPX open source packer.

  • VMProtect packed file 4 IoCs

    Detects executables packed with VMProtect commercial packer.

  • Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Checks processor information in registry 2 TTPs 2 IoCs

    Processor information is often read in order to detect sandboxing environments.

  • Suspicious behavior: EnumeratesProcesses 29 IoCs
  • Suspicious use of WriteProcessMemory 4 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\oreki.exe
    "C:\Users\Admin\AppData\Local\Temp\oreki.exe"
    1⤵
    • Drops startup file
    • Loads dropped DLL
    • Suspicious use of NtSetInformationThreadHideFromDebugger
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:1716
    • C:\Users\Public\Videos\VSTelem\pbswc\mjcqe
      C:\Users\Public\Videos\VSTelem\pbswc\mjcqe
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Suspicious use of NtSetInformationThreadHideFromDebugger
      • Checks processor information in registry
      • Suspicious behavior: EnumeratesProcesses
      PID:580

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • C:\Users\Public\Videos\VSTelem\pbswc\Update.log

    Filesize

    73KB

    MD5

    f2756d32dec5f018dcef55d8b7b5662e

    SHA1

    cbde904b5a8a6da3df2e83ea3112c0e0aa8ebed8

    SHA256

    a3c23667f4801304183cd4c328d49cd0e4dedd552cf61c2a7be313403eddb189

    SHA512

    7f2978d94d316894a3de4e7e482adbfee18ef4691128536a27673927ab5a773dd54ba66e5e5bbb7da87b6a38b0040f65e52b048d85971d4427a6c97b159bbe49

  • C:\Users\Public\Videos\VSTelem\pbswc\mjcqe

    Filesize

    183KB

    MD5

    7c8270f9d0106ffaf862790f527737ce

    SHA1

    beab49677deb4ef1188294ef13b91f0b571f83c0

    SHA256

    0b87153beed1a7ac3f743f5117eea3f6c594774d77e7e0e36d82d9cc41dd9c87

    SHA512

    64da62c8ae3783349f85e27389f5596e925f5485b02f4290e85fae38bbb4aab4ee593dcb44738050bb7cfa43c5df70b65bb93a3aafc498c15ca163e03896c605

  • C:\Users\Public\Videos\VSTelem\pbswc\scrnshot.dll

    Filesize

    212KB

    MD5

    17114379bd336feaea221c091973516a

    SHA1

    1db8bc886e793b84ee6bd9d354c3253938c46b56

    SHA256

    63d5ff25d23bef01bd9717a6e5d203d59385d32e2518999ae4e20f9b7b283044

    SHA512

    ccf84b331ec713e6391407a17fb48a5e1cbc568840dccb0754dbd48997f911343bd0924ada844753c6787ec65271b00549c3e4e89d93c101677e18dfd40a79ee

  • \Users\Public\Videos\VSTelem\pbswc\Scrnshot.dll

    Filesize

    212KB

    MD5

    17114379bd336feaea221c091973516a

    SHA1

    1db8bc886e793b84ee6bd9d354c3253938c46b56

    SHA256

    63d5ff25d23bef01bd9717a6e5d203d59385d32e2518999ae4e20f9b7b283044

    SHA512

    ccf84b331ec713e6391407a17fb48a5e1cbc568840dccb0754dbd48997f911343bd0924ada844753c6787ec65271b00549c3e4e89d93c101677e18dfd40a79ee

  • \Users\Public\Videos\VSTelem\pbswc\mjcqe

    Filesize

    183KB

    MD5

    7c8270f9d0106ffaf862790f527737ce

    SHA1

    beab49677deb4ef1188294ef13b91f0b571f83c0

    SHA256

    0b87153beed1a7ac3f743f5117eea3f6c594774d77e7e0e36d82d9cc41dd9c87

    SHA512

    64da62c8ae3783349f85e27389f5596e925f5485b02f4290e85fae38bbb4aab4ee593dcb44738050bb7cfa43c5df70b65bb93a3aafc498c15ca163e03896c605

  • memory/580-71-0x0000000010000000-0x000000001005F000-memory.dmp

    Filesize

    380KB

  • memory/580-73-0x00000000000A0000-0x00000000000CB000-memory.dmp

    Filesize

    172KB

  • memory/580-80-0x0000000010000000-0x000000001005F000-memory.dmp

    Filesize

    380KB

  • memory/580-81-0x0000000000090000-0x0000000000091000-memory.dmp

    Filesize

    4KB

  • memory/1716-60-0x0000000002850000-0x0000000003250000-memory.dmp

    Filesize

    10.0MB

  • memory/1716-56-0x0000000010000000-0x0000000010066000-memory.dmp

    Filesize

    408KB

  • memory/1716-54-0x0000000000400000-0x000000000055F000-memory.dmp

    Filesize

    1.4MB

  • memory/1716-55-0x0000000000400000-0x000000000055F000-memory.dmp

    Filesize

    1.4MB

  • memory/1716-82-0x0000000000400000-0x000000000055F000-memory.dmp

    Filesize

    1.4MB