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Analysis

  • max time kernel
    149s
  • max time network
    148s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240802-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
  • submitted
    04/09/2024, 10:51

General

  • Target

    AWB#81311002907.exe

  • Size

    931KB

  • MD5

    c8b97aad582adb6ccddc6f3e74bda215

  • SHA1

    bbf2e45bd5af0695f5f82fed5728a480a7fd4c04

  • SHA256

    d26670d5f425962b546d10ecd4d148f5884a3f392afe1c5fb4426466d4454c34

  • SHA512

    7ede8146da39ea716cd6c64f3a60ca324566c3000cb5c1275f5f1563cca726ec8b97420c7e4620f4fe998f8542896bb99294cef83a7e8bfae2e1e46fb4bbc100

  • SSDEEP

    24576:9elw4o5E6Gkf1CGkuH2sz6rtlHa08qsCJAUke0O:9elw4o5E+C1ttl605X3ko

Malware Config

Extracted

Family

remcos

Botnet

Sept. 04C

C2

154.216.20.211:6902

Attributes
  • audio_folder

    MicRecords

  • audio_record_time

    5

  • connect_delay

    0

  • connect_interval

    1

  • copy_file

    remcos.exe

  • copy_folder

    Remcos

  • delete_file

    false

  • hide_file

    false

  • hide_keylog_file

    false

  • install_flag

    false

  • keylog_crypt

    false

  • keylog_file

    logs.dat

  • keylog_flag

    false

  • keylog_folder

    remcos

  • mouse_option

    false

  • mutex

    Rmc-YGC9WY

  • screenshot_crypt

    false

  • screenshot_flag

    false

  • screenshot_folder

    Screenshots

  • screenshot_path

    %AppData%

  • screenshot_time

    10

  • take_screenshot_option

    false

  • take_screenshot_time

    5

Signatures

  • Remcos

    Remcos is a closed-source remote control and surveillance software.

  • Credentials from Password Stores: Credentials from Web Browsers 1 TTPs

    Malicious Access or copy of Web Browser Credential store.

  • Detected Nirsoft tools 3 IoCs

    Free utilities often used by attackers which can steal passwords, product keys, etc.

  • NirSoft MailPassView 1 IoCs

    Password recovery tool for various email clients

  • NirSoft WebBrowserPassView 1 IoCs

    Password recovery tool for various web browsers

  • Command and Scripting Interpreter: PowerShell 1 TTPs 2 IoCs

    Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Reads user/profile data of web browsers 2 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • Accesses Microsoft Outlook accounts 1 TTPs 1 IoCs
  • Suspicious use of SetThreadContext 4 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • System Location Discovery: System Language Discovery 1 TTPs 8 IoCs

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

  • Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

  • Suspicious behavior: EnumeratesProcesses 10 IoCs
  • Suspicious behavior: MapViewOfSection 3 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 33 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\AWB#81311002907.exe
    "C:\Users\Admin\AppData\Local\Temp\AWB#81311002907.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:3828
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Local\Temp\AWB#81311002907.exe"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2616
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\iVWcGN.exe"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:1156
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\iVWcGN" /XML "C:\Users\Admin\AppData\Local\Temp\tmp3F85.tmp"
      2⤵
      • System Location Discovery: System Language Discovery
      • Scheduled Task/Job: Scheduled Task
      PID:1380
    • C:\Users\Admin\AppData\Local\Temp\AWB#81311002907.exe
      "C:\Users\Admin\AppData\Local\Temp\AWB#81311002907.exe"
      2⤵
      • Suspicious use of SetThreadContext
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: MapViewOfSection
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:816
      • C:\Users\Admin\AppData\Local\Temp\AWB#81311002907.exe
        C:\Users\Admin\AppData\Local\Temp\AWB#81311002907.exe /stext "C:\Users\Admin\AppData\Local\Temp\bqkcjuetvhyhuumsu"
        3⤵
        • System Location Discovery: System Language Discovery
        • Suspicious behavior: EnumeratesProcesses
        PID:5024
      • C:\Users\Admin\AppData\Local\Temp\AWB#81311002907.exe
        C:\Users\Admin\AppData\Local\Temp\AWB#81311002907.exe /stext "C:\Users\Admin\AppData\Local\Temp\dtxujmpujpqmfaawmdix"
        3⤵
        • Accesses Microsoft Outlook accounts
        • System Location Discovery: System Language Discovery
        PID:3800
      • C:\Users\Admin\AppData\Local\Temp\AWB#81311002907.exe
        C:\Users\Admin\AppData\Local\Temp\AWB#81311002907.exe /stext "C:\Users\Admin\AppData\Local\Temp\oncfkfaofxirhpwivovzifhw"
        3⤵
        • System Location Discovery: System Language Discovery
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:3756

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\ProgramData\remcos\logs.dat

    Filesize

    144B

    MD5

    9c69a188197b4347a208ec25fd6e89e7

    SHA1

    8bf63d94573db4e07c4d70f2fc0e69edbe092a97

    SHA256

    c33b98bc824d55e3549936921ce268c6e339292641f16b7843e8d711f5a3dae6

    SHA512

    bab7fc2367a9f08c0c8198ff83dbeebaa7381552a0a4952e8f8bbb9e014ae10a768b91ddf0cd329207b2d9c16173a98e97cca961230b47ba272e7a8e7f6d155c

  • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\powershell.exe.log

    Filesize

    2KB

    MD5

    968cb9309758126772781b83adb8a28f

    SHA1

    8da30e71accf186b2ba11da1797cf67f8f78b47c

    SHA256

    92099c10776bb7e3f2a8d1b82d4d40d0c4627e4f1bf754a6e58dfd2c2e97042a

    SHA512

    4bd50732f8af4d688d95999bddfd296115d7033ddc38f86c9fb1f47fde202bffa27e9088bebcaa3064ca946af2f5c1ca6cbde49d0907f0005c7ab42874515dd3

  • C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

    Filesize

    18KB

    MD5

    2147e844db202003562123bb983dce95

    SHA1

    b729786d2ca3d3c27d16928c8e62fefafc4b9362

    SHA256

    21e55ad6793823dc614778ccc6eacb5c8df6f87e1b7e139bd10a48f56815fb80

    SHA512

    d002155620a4e9f93b02ba2d70ed55f3866f0aecdd827280d96b6436071d49a28d7dd4373233015225fd82b97f1741b8ce7ed2a05807edf601fa7fd7cfa383ab

  • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_nqgqinpw.glj.ps1

    Filesize

    60B

    MD5

    d17fe0a3f47be24a6453e9ef58c94641

    SHA1

    6ab83620379fc69f80c0242105ddffd7d98d5d9d

    SHA256

    96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

    SHA512

    5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

  • C:\Users\Admin\AppData\Local\Temp\bqkcjuetvhyhuumsu

    Filesize

    4KB

    MD5

    ea01dd92b15d2f570f6b167dad2d1fd0

    SHA1

    7b89141d4c3eb2f29d096f28a9bfe66eb006224a

    SHA256

    0515f49138d74283f9ac1042fd1a384f715b74c2b99193454dbb0cd585097727

    SHA512

    0e7695aea30250a41829fa4abb681b8c3ed4c0955e18f1f9f3a5456bfb3a76f016f538e557bf29b99ab6ab48c846f9fa3c4bccd8cb5fe73099a81b5946029ec8

  • C:\Users\Admin\AppData\Local\Temp\tmp3F85.tmp

    Filesize

    1KB

    MD5

    1c3fb615de39d69f98133d9beeedac1c

    SHA1

    be6239f027445b084fd7497bdeed945246f3d157

    SHA256

    bb8c78a28847add29f6fc08ab4997abda1b70a6b51ed34e1a66b43091cf1f6a9

    SHA512

    29fd39e2f275da431eb766db3bbb660fc48e19bd98e40ad9384b2a3476145d689bd87afdb8abf60bef46804aa0a7f4bf114a3edf00a3d0fec6ea6f715f734407

  • memory/816-111-0x0000000010000000-0x0000000010019000-memory.dmp

    Filesize

    100KB

  • memory/816-149-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/816-125-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/816-124-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/816-133-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/816-141-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/816-140-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/816-113-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/816-49-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/816-112-0x0000000010000000-0x0000000010019000-memory.dmp

    Filesize

    100KB

  • memory/816-108-0x0000000010000000-0x0000000010019000-memory.dmp

    Filesize

    100KB

  • memory/816-132-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/816-62-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/816-59-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/816-60-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/816-57-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/816-58-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/816-46-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/816-148-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/816-52-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/816-53-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/816-48-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/1156-105-0x0000000007850000-0x0000000007864000-memory.dmp

    Filesize

    80KB

  • memory/1156-100-0x0000000007680000-0x000000000768A000-memory.dmp

    Filesize

    40KB

  • memory/1156-120-0x0000000074D70000-0x0000000075520000-memory.dmp

    Filesize

    7.7MB

  • memory/1156-56-0x0000000006390000-0x00000000063DC000-memory.dmp

    Filesize

    304KB

  • memory/1156-55-0x00000000062E0000-0x00000000062FE000-memory.dmp

    Filesize

    120KB

  • memory/1156-32-0x0000000074D70000-0x0000000075520000-memory.dmp

    Filesize

    7.7MB

  • memory/1156-114-0x0000000007930000-0x0000000007938000-memory.dmp

    Filesize

    32KB

  • memory/1156-19-0x0000000074D70000-0x0000000075520000-memory.dmp

    Filesize

    7.7MB

  • memory/1156-20-0x0000000074D70000-0x0000000075520000-memory.dmp

    Filesize

    7.7MB

  • memory/1156-103-0x0000000007810000-0x0000000007821000-memory.dmp

    Filesize

    68KB

  • memory/1156-64-0x0000000075620000-0x000000007566C000-memory.dmp

    Filesize

    304KB

  • memory/1156-63-0x00000000068A0000-0x00000000068D2000-memory.dmp

    Filesize

    200KB

  • memory/1156-80-0x0000000006880000-0x000000000689E000-memory.dmp

    Filesize

    120KB

  • memory/1156-86-0x00000000074D0000-0x0000000007573000-memory.dmp

    Filesize

    652KB

  • memory/2616-16-0x0000000074D70000-0x0000000075520000-memory.dmp

    Filesize

    7.7MB

  • memory/2616-102-0x00000000075E0000-0x0000000007676000-memory.dmp

    Filesize

    600KB

  • memory/2616-121-0x0000000074D70000-0x0000000075520000-memory.dmp

    Filesize

    7.7MB

  • memory/2616-23-0x0000000005180000-0x00000000051E6000-memory.dmp

    Filesize

    408KB

  • memory/2616-25-0x0000000074D70000-0x0000000075520000-memory.dmp

    Filesize

    7.7MB

  • memory/2616-107-0x00000000076A0000-0x00000000076BA000-memory.dmp

    Filesize

    104KB

  • memory/2616-99-0x0000000007360000-0x000000000737A000-memory.dmp

    Filesize

    104KB

  • memory/2616-98-0x00000000079A0000-0x000000000801A000-memory.dmp

    Filesize

    6.5MB

  • memory/2616-15-0x0000000002740000-0x0000000002776000-memory.dmp

    Filesize

    216KB

  • memory/2616-22-0x0000000005060000-0x0000000005082000-memory.dmp

    Filesize

    136KB

  • memory/2616-31-0x0000000005AD0000-0x0000000005E24000-memory.dmp

    Filesize

    3.3MB

  • memory/2616-17-0x00000000053A0000-0x00000000059C8000-memory.dmp

    Filesize

    6.2MB

  • memory/2616-74-0x0000000075620000-0x000000007566C000-memory.dmp

    Filesize

    304KB

  • memory/2616-18-0x0000000074D70000-0x0000000075520000-memory.dmp

    Filesize

    7.7MB

  • memory/2616-24-0x00000000052A0000-0x0000000005306000-memory.dmp

    Filesize

    408KB

  • memory/2616-104-0x0000000007590000-0x000000000759E000-memory.dmp

    Filesize

    56KB

  • memory/3756-95-0x0000000000400000-0x0000000000424000-memory.dmp

    Filesize

    144KB

  • memory/3756-96-0x0000000000400000-0x0000000000424000-memory.dmp

    Filesize

    144KB

  • memory/3756-97-0x0000000000400000-0x0000000000424000-memory.dmp

    Filesize

    144KB

  • memory/3800-90-0x0000000000400000-0x0000000000462000-memory.dmp

    Filesize

    392KB

  • memory/3800-89-0x0000000000400000-0x0000000000462000-memory.dmp

    Filesize

    392KB

  • memory/3800-91-0x0000000000400000-0x0000000000462000-memory.dmp

    Filesize

    392KB

  • memory/3828-9-0x0000000006D00000-0x0000000006DC0000-memory.dmp

    Filesize

    768KB

  • memory/3828-5-0x0000000074D70000-0x0000000075520000-memory.dmp

    Filesize

    7.7MB

  • memory/3828-1-0x0000000000FC0000-0x00000000010AC000-memory.dmp

    Filesize

    944KB

  • memory/3828-10-0x0000000009560000-0x00000000095FC000-memory.dmp

    Filesize

    624KB

  • memory/3828-2-0x0000000006120000-0x00000000066C4000-memory.dmp

    Filesize

    5.6MB

  • memory/3828-54-0x0000000074D70000-0x0000000075520000-memory.dmp

    Filesize

    7.7MB

  • memory/3828-0-0x0000000074D7E000-0x0000000074D7F000-memory.dmp

    Filesize

    4KB

  • memory/3828-8-0x0000000074D70000-0x0000000075520000-memory.dmp

    Filesize

    7.7MB

  • memory/3828-7-0x0000000074D7E000-0x0000000074D7F000-memory.dmp

    Filesize

    4KB

  • memory/3828-6-0x0000000005ED0000-0x0000000005EE8000-memory.dmp

    Filesize

    96KB

  • memory/3828-3-0x0000000005A90000-0x0000000005B22000-memory.dmp

    Filesize

    584KB

  • memory/3828-4-0x0000000005B40000-0x0000000005B4A000-memory.dmp

    Filesize

    40KB

  • memory/5024-87-0x0000000000400000-0x0000000000478000-memory.dmp

    Filesize

    480KB

  • memory/5024-81-0x0000000000400000-0x0000000000478000-memory.dmp

    Filesize

    480KB

  • memory/5024-88-0x0000000000400000-0x0000000000478000-memory.dmp

    Filesize

    480KB