Resubmissions

10-07-2023 17:26

230710-vzydmadd3t 7

10-07-2023 17:17

230710-vtwb3scb72 7

Analysis

  • max time kernel
    1800s
  • max time network
    1599s
  • platform
    windows7_x64
  • resource
    win7-20230703-en
  • resource tags

    arch:x64arch:x86image:win7-20230703-enlocale:en-usos:windows7-x64system
  • submitted
    10-07-2023 17:26

General

  • Target

    invoice4346.exe

  • Size

    377KB

  • MD5

    f166d6ae311679fb81b13c340d0e7738

  • SHA1

    2692590176abf1deaba1ffe4ce6b2e5255a0af64

  • SHA256

    fed0556f87884c7d40eadd3e2f22d432da0b5854edda4404a936f5b66e00b534

  • SHA512

    2600a76c99b758fd381a09aaeeb681f08d909447d40b3fcb8e7b7780dc03feb95884a59ee0b1203cfad86ca39bd3cd6f5f32576e859c5fa8955356ebd050ae0f

  • SSDEEP

    6144:/oShfEPZVheNA+ff03IvTWR1wHa98hU3DHCMf6rbZX:QqCnhe2e42Czw69kgH3fuX

Score
7/10

Malware Config

Signatures

  • Checks QEMU agent file 2 TTPs 2 IoCs

    Checks presence of QEMU agent, possibly to detect virtualization.

  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Loads dropped DLL 1 IoCs
  • Checks installed software on the system 1 TTPs

    Looks up Uninstall key entries in the registry to enumerate software on the system.

  • Legitimate hosting services abused for malware hosting/C2 1 TTPs
  • Drops file in System32 directory 1 IoCs
  • Suspicious use of NtCreateThreadExHideFromDebugger 1 IoCs
  • Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs
  • Suspicious use of SetThreadContext 2 IoCs
  • Drops file in Windows directory 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious behavior: MapViewOfSection 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 9 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\invoice4346.exe
    "C:\Users\Admin\AppData\Local\Temp\invoice4346.exe"
    1⤵
    • Checks QEMU agent file
    • Loads dropped DLL
    • Drops file in System32 directory
    • Suspicious use of NtSetInformationThreadHideFromDebugger
    • Suspicious use of SetThreadContext
    • Drops file in Windows directory
    • Suspicious behavior: MapViewOfSection
    • Suspicious use of WriteProcessMemory
    PID:2256
    • C:\Users\Admin\AppData\Local\Temp\invoice4346.exe
      "C:\Users\Admin\AppData\Local\Temp\invoice4346.exe"
      2⤵
      • Checks QEMU agent file
      • Checks computer location settings
      • Suspicious use of NtCreateThreadExHideFromDebugger
      • Suspicious use of NtSetInformationThreadHideFromDebugger
      • Suspicious use of SetThreadContext
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: MapViewOfSection
      • Suspicious use of AdjustPrivilegeToken
      PID:1268
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\SysWOW64\cmd.exe"
      2⤵
        PID:1668

    Network

    MITRE ATT&CK Enterprise v6

    Replay Monitor

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    Downloads

    • \Users\Admin\AppData\Local\Temp\nsz122C.tmp\System.dll

      Filesize

      11KB

      MD5

      6ad39193ed20078aa1b23c33a1e48859

      SHA1

      95e70e4f47aa1689cc08afbdaef3ec323b5342fa

      SHA256

      b9631423a50c666faf2cc6901c5a8d6eb2fecd306fdd2524256b7e2e37b251c2

      SHA512

      78c89bb8c86f3b68e5314467eca4e8e922d143335081fa66b01d756303e1aec68ed01f4be7098dbe06a789ca32a0f31102f5ba408bc5ab28e61251611bb4f62b

    • memory/1268-63-0x0000000000400000-0x0000000001462000-memory.dmp

      Filesize

      16.4MB

    • memory/1268-64-0x0000000000400000-0x0000000001462000-memory.dmp

      Filesize

      16.4MB

    • memory/1268-68-0x0000000000400000-0x0000000001462000-memory.dmp

      Filesize

      16.4MB

    • memory/1268-86-0x0000000000400000-0x0000000001462000-memory.dmp

      Filesize

      16.4MB

    • memory/1268-87-0x0000000001470000-0x00000000072C6000-memory.dmp

      Filesize

      94.3MB

    • memory/1268-88-0x00000000377F0000-0x0000000037AF3000-memory.dmp

      Filesize

      3.0MB

    • memory/1268-90-0x0000000000400000-0x0000000001462000-memory.dmp

      Filesize

      16.4MB

    • memory/2256-89-0x0000000002440000-0x0000000002503000-memory.dmp

      Filesize

      780KB

    • memory/2256-94-0x0000000002440000-0x0000000002503000-memory.dmp

      Filesize

      780KB