Overview

overview

10

Static

static

3

resemblec2.exe

windows7-x64

10

resemblec2.exe

windows10-2004-x64

7

Resubmissions

13-01-2025 04:02

250113-el1zlavlf1 10

12-01-2025 15:18

250112-sp351szpcr 10

Analysis

  • max time kernel
    117s
  • max time network
    145s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    12-01-2025 15:18

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General

  • Target

    resemblec2.exe

  • Size

    670KB

  • MD5

    a7816959bd66c9c1de58176164a9a346

  • SHA1

    828184b97df950a1ca6288b7693ee35c5c4193b7

  • SHA256

    e607e52cb362cdca751c9cf27c91b8f5087649c720d49fd31ee925176107e501

  • SHA512

    b510573b0a7679534c331b70b9c338ed62c8b3907474209fa91567f9e5884137cce981e5aa95fad424d1f81f1bc54012437745d9dd05936268e48796581376bd

  • SSDEEP

    12288:DwXfR1kAiLQSeSiDrSBOsHENlXme4ylVUGpR9UR7BDF66zL/wVh/4ixdgWrE8qnD:DwvR1kkSebDedE3X/lvpR9U/Ft/Ch/v4

Score
10/10
orcusdiscoveryratspywarestealer

Malware Config

Extracted

Family

orcus

C2

6.tcp.eu.ngrok.io

Mutex

ff1f02c9f26f4253869c1d0a04907775

Attributes
  • administration_rights_required

    false

  • anti_debugger

    false

  • anti_tcp_analyzer

    false

  • antivm

    false

  • autostart_method

    1

  • change_creation_date

    false

  • force_installer_administrator_privileges

    false

  • hide_file

    false

  • install

    false

  • installation_folder

    %appdata%\Microsoft\Speech\AudioDriver.exe

  • installservice

    false

  • keylogger_enabled

    false

  • newcreationdate

    01/12/2025 14:58:32

  • plugins

    AgUFyfihswTdIPqEArukcmEdSF06Hw9CAFMAbwBEACAAUAByAG8AdABlAGMAdABpAG8AbgAHAzEALgAwAEEgMwBhADkAYwAwADkAOQA3AGEANgBlADQANAA2AGMAMQBiADYANgA4ADkAMgA1ADgAMQBjADMAYgAxADMAOABlAAEFl6aNkQPXkQKOmwKLvFcpr24sKCsVRABpAHMAYQBiAGwAZQAgAFcAZQBiAGMAYQBtACAATABpAGcAaAB0AHMABwMxAC4AMABBIGIAOABiAGQANQAxADUAOAA0ADkAZABjADQAMwAzADIAOQAxAGUAMQBiADEANQBmADYANQBiAGMAMwA3ADAAZAABAAAEBA==

  • reconnect_delay

    10000

  • registry_autostart_keyname

    Audio HD Driver

  • registry_hidden_autostart

    false

  • set_admin_flag

    false

  • tasksch_name

    Audio HD Driver

  • tasksch_request_highest_privileges

    false

  • try_other_autostart_onfail

    false

aes.plain

Signatures

  • Orcus

    Orcus is a Remote Access Trojan that is being sold on underground forums.

    ratspywarestealerorcus
  • Orcus family
    orcus
  • Executes dropped EXE 2 IoCs
  • Loads dropped DLL 1 IoCs
  • Legitimate hosting services abused for malware hosting/C2 1 TTPs 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

    discovery
  • Modifies registry class 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 6 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of FindShellTrayWindow 1 IoCs
  • Suspicious use of SendNotifyMessage 1 IoCs
  • Suspicious use of WriteProcessMemory 11 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\resemblec2.exe
    "C:\Users\Admin\AppData\Local\Temp\resemblec2.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:3012
    • C:\Windows\system32\rundll32.exe
      "C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Users\Admin\AppData\Local\Temp\resemble.py
      2⤵
      • Modifies registry class
      • Suspicious behavior: GetForegroundWindowSpam
      PID:2240
    • C:\Users\Admin\AppData\Local\Temp\idk.exe
      "C:\Users\Admin\AppData\Local\Temp\idk.exe"
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:2088
      • C:\Users\Admin\AppData\Roaming\Microsoft\Speech\AudioDriver.exe
        "C:\Users\Admin\AppData\Roaming\Microsoft\Speech\AudioDriver.exe"
        3⤵
        • Executes dropped EXE
        • System Location Discovery: System Language Discovery
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of FindShellTrayWindow
        • Suspicious use of SendNotifyMessage
        PID:2864

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\Cab5EC.tmp
    Filesize

    70KB

    MD5

    49aebf8cbd62d92ac215b2923fb1b9f5

    SHA1

    1723be06719828dda65ad804298d0431f6aff976

    SHA256

    b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f

    SHA512

    bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b

    Download Submit

  • C:\Users\Admin\AppData\Local\Temp\idk.exe
    Filesize

    845KB

    MD5

    c0f4b33fab9864dfebccb1f7621ac76a

    SHA1

    9e65684a22bae25570f019366657a83522434590

    SHA256

    ce59e3370985a4b7f243de0fb67848bcb223781077dee528e2f4adb8e9d8d656

    SHA512

    6cd5672e2b3615ebb94fb96de29fe1b2cbfa81c1e18080ad6fbb48b25457481e17d8919823970e5bd1e230e2e8c76d379a515551e35bdc10f305d3349ab3cefe

    Download Submit

  • memory/3012-0-0x000007FEF5B83000-0x000007FEF5B84000-memory.dmp

    Filesize

    4KB

    Download

  • memory/3012-1-0x0000000000080000-0x000000000012E000-memory.dmp

    Filesize

    696KB

    Download

  • memory/3012-9-0x000007FEF5B80000-0x000007FEF656C000-memory.dmp

    Filesize

    9.9MB

    Download