Analysis

  • max time kernel
    117s
  • max time network
    118s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    08-01-2025 10:32

General

  • Target

    $PLUGINSDIR/System.dll

  • Size

    67KB

  • MD5

    bd05feb8825b15dcdd9100d478f04e17

  • SHA1

    a67d82be96a439ce1c5400740da5c528f7f550e0

  • SHA256

    4972cca9555b7e5dcb6feef63605305193835ea63f343df78902bbcd432ba496

  • SHA512

    67f1894c79bbcef4c7fedd91e33ec48617d5d34c2d9ebcd700c935b7fe1b08971d4c68a71d5281abac97e62d6b8c8f318cc6ff15ea210ddcf21ff04a9e5a7f95

  • SSDEEP

    1536:2IfbmtOpUtoqoQvfDrghNT+2w8mbJ1/NfSttVx:bfi4GoqVvbaNXubJ1JI

Malware Config

Signatures

  • Ramnit

    Ramnit is a versatile family that holds viruses, worms, and Trojans.

  • Ramnit family
  • Executes dropped EXE 2 IoCs
  • Loads dropped DLL 2 IoCs
  • Drops file in System32 directory 1 IoCs
  • UPX packed file 6 IoCs

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

  • Drops file in Program Files directory 3 IoCs
  • Program crash 1 IoCs
  • System Location Discovery: System Language Discovery 1 TTPs 4 IoCs

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

  • Modifies Internet Explorer settings 1 TTPs 28 IoCs
  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious use of FindShellTrayWindow 1 IoCs
  • Suspicious use of SetWindowsHookEx 6 IoCs
  • Suspicious use of WriteProcessMemory 27 IoCs

Processes

  • C:\Windows\system32\rundll32.exe
    rundll32.exe C:\Users\Admin\AppData\Local\Temp\$PLUGINSDIR\System.dll,#1
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:2112
    • C:\Windows\SysWOW64\rundll32.exe
      rundll32.exe C:\Users\Admin\AppData\Local\Temp\$PLUGINSDIR\System.dll,#1
      2⤵
      • Loads dropped DLL
      • Drops file in System32 directory
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:1792
      • C:\Windows\SysWOW64\rundll32Srv.exe
        C:\Windows\SysWOW64\rundll32Srv.exe
        3⤵
        • Executes dropped EXE
        • Loads dropped DLL
        • Drops file in Program Files directory
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:3036
        • C:\Program Files (x86)\Microsoft\DesktopLayer.exe
          "C:\Program Files (x86)\Microsoft\DesktopLayer.exe"
          4⤵
          • Executes dropped EXE
          • System Location Discovery: System Language Discovery
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of WriteProcessMemory
          PID:1656
          • C:\Program Files\Internet Explorer\iexplore.exe
            "C:\Program Files\Internet Explorer\iexplore.exe"
            5⤵
            • Modifies Internet Explorer settings
            • Suspicious use of FindShellTrayWindow
            • Suspicious use of SetWindowsHookEx
            • Suspicious use of WriteProcessMemory
            PID:2212
            • C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
              "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:2212 CREDAT:275457 /prefetch:2
              6⤵
              • System Location Discovery: System Language Discovery
              • Modifies Internet Explorer settings
              • Suspicious use of SetWindowsHookEx
              PID:2764
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 1792 -s 224
        3⤵
        • Program crash
        PID:2380

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015

    Filesize

    342B

    MD5

    34c8dbfbd45a068bc70726c148857eec

    SHA1

    f86160fda6e56dca6fe8e66e5d2b85a0a71548b8

    SHA256

    ca6fd04eef4dce88e95865313c579c8031afe56f6ba0dc52cb8c9ae8f95dbb2e

    SHA512

    cfd9996a0caea6f4b5f3221a211e861b376e1cd2c769f92dcc935648dd771cc36e43ca69d68de8dcd53ceb79bdc8ad4a50dd6bdd7ad56e07d211f8b1217b018b

  • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015

    Filesize

    342B

    MD5

    d0fe06e721c0e1ad248d8180a8fa2167

    SHA1

    70aeb5aef34cd26bb9926fff228f812e9b156d4d

    SHA256

    24c6bcac8746af3a83bfbdeaab9d54ebac2bd64fdd843ae4376f1c9acb06c5e7

    SHA512

    fd03edb33198701e70b13735eb92e2d85357378592ea83547d0dd26bbcaf14af863ec2d4de60ffad62631c6be8db5759ccbab9254a2fe049918a554a11cd3314

  • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015

    Filesize

    342B

    MD5

    cbf801ff486a3b7f80b2b53af521b7ed

    SHA1

    003d32c09da3ff926106ccf9a200fdd56bf7be77

    SHA256

    946f96ff1c92a4cf9b6fe88ccb5f02f1dbd023d8adc4e67c7a19a5189c9115f4

    SHA512

    60726353ade0d40ea74c307561361f5ff59e8e20fa403f3bd304e9620c8b4c53c7ade6066d4e4cc5d59b2c36386fb9758e206a9667066701347b154907e96b9d

  • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015

    Filesize

    342B

    MD5

    9ad3fce441be384d258681ef4f7eabff

    SHA1

    c884b50075840d2bab3f0fd05decc96cc9a611f0

    SHA256

    844a4f89574dc5c7664c8e3af45353c7fc01440685d9216e9b1727fe37ee79a0

    SHA512

    8eb85c68c2df8fa0016299b85a73ede53e5920f9ce7e7b3bc2c00f808317574197cfa58485be8cea5a5d71a70250f28ddb3542579edf7887e64dc212b97d7845

  • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015

    Filesize

    342B

    MD5

    031b7dd74fbd33b20826be795bbb2f37

    SHA1

    ef8df9137200c51931ee0dbe17c3a9c5423a53ac

    SHA256

    ad3691bad2518e3c70c32637c03208e1c4361798fa5fc99e7d4cc9757202a57f

    SHA512

    5cd86473a9ba0c1288ef18711ee90ed0d948c7ff1bdd557c4b3c761ac70569fd39d8d33a271cf76402bb1c24c6af15f4be52c754bc27815c2ff727ddcb39fe8a

  • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015

    Filesize

    342B

    MD5

    bb8a2b82e12d2880dca3c2f3b0a566bc

    SHA1

    8f401fdd5159d8a6fd63b798028e1b899b5dea61

    SHA256

    277a0527c7add148d8de1c6693297ef6b157d779425873660f293493be7cd98f

    SHA512

    232aee722367b81f738873c28136da0f2752006aebf0d53170b83eb7866ed2e4a7ec9a32a486ff0a8f72db56f72b3263bec08da8f50defdde3f06a5354381dfb

  • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015

    Filesize

    342B

    MD5

    d83aaf7465a68694bbcb429a0096069d

    SHA1

    b51090ff92e9f990f2d7f9b7c136e72d4c32db7a

    SHA256

    b865204c8fe635efc612389e6569b2857b57d2af91119fe4a6ed45eee77b3940

    SHA512

    09cec8dc223396396922c8a7f825a8437c55d3eccddd9193e1919785bc4ddbe46bb221a7fedd4fb8f98669deada746cc961199c445d40190d2a2397013cc45be

  • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015

    Filesize

    342B

    MD5

    1e0cf81abf200908943e978ab7cf0d70

    SHA1

    25b107c2b4be535e5f92675bf9c6d9af44cabc43

    SHA256

    3bee5871f5d71e22733aebe0fbe0309465a05b0827ec40b78af0314530e8e1a9

    SHA512

    760b06e82bfe862817c3ad4def22e861bee9278f444123e4c1ab5c5545171677d0a6019852da21ffe3b0214522d19d19423b57ccb7add5a9d31ff386ef287326

  • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015

    Filesize

    342B

    MD5

    cfbd48f630b57f0754425993e318f92f

    SHA1

    c2673519e70e058238738292dc5a2f73863d823a

    SHA256

    7669e789cbc914289eb854ad7d798720c7979e7969f3196d43f592fb8452f2e1

    SHA512

    1e4efef2556712b32f44e49c7fbd408f2c5773cb78c53aeb7efc1c28b07d95720579382034ba878a9168fae0862f5f3245ac400ba3a9e40ced8e624963944ba1

  • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015

    Filesize

    342B

    MD5

    58b02c354fcf01b25bde6927d8da79af

    SHA1

    1dbb274e61ae1c4374f22bf66bf2e6499557c5d0

    SHA256

    c581094d77e963ec4dfb7dbfbe78d72353b4ae2f1b0eb2c6ea48545a1cb319d4

    SHA512

    497f315b42d9ce48dda1c5a5384f80fc63a6ca0ba9215b83c1b3da037d52a69b4756990cbdc09d242a8722252c7f0b709bcb7575b70f9a1bec247c24d873f852

  • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015

    Filesize

    342B

    MD5

    974bc32697ca4a755b296d70649ccd7c

    SHA1

    0a1fcd1b29d9fb4cd1a564a932ea5c515347875f

    SHA256

    4b9bfb1eccf3442a99285dd0be974cb299b548fd952dab75d2be73aa8d416cda

    SHA512

    67fa978369673a3c7c1096667f6b0ecb35a01f0bb84e4ecd30ad62b520e4ffd696f4615b0982b5b54c12363214b678e58d52162d7f477a4cdf229478454e2cf1

  • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015

    Filesize

    342B

    MD5

    74f88a8039ecdc365215913aec42dc11

    SHA1

    59b97c2041063f22b6908d2c45d7457d1f73fd32

    SHA256

    1b78423028bd4ec3c3d02eee683747b3dfad3cfdf49ed80b613c1a60fbf51428

    SHA512

    1597d19c331da6030c2f4b3ee7e5b4166c9b888d528344e14cb5313fa36cc4b1ca21985020b25ad4722da11667747543a0b54414b87c4432eb3b4461c34fd5d6

  • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015

    Filesize

    342B

    MD5

    20e506724b0735aced8245adffeb4537

    SHA1

    5d10c156b8b3c720b24211dc084d3103d706fa0e

    SHA256

    ba03ce71417669fc70c32f1a4df12edd19c76146b631ca9eaf0c84eeed94f6bf

    SHA512

    44ae983e566dae85f8a1b2fda3402b5645ed3c8959f58c33368d043dd910566abfe9f04b67989f10ff57dab4be9bf8c195bf02ac1e89ab6b0c9c538ac85096f4

  • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015

    Filesize

    342B

    MD5

    5fd7d6002b15af625c52d68c4b5ce52c

    SHA1

    94871d2979af64d92e931371cbf1d6cf85b60c55

    SHA256

    6a3d13ddb6bd2d40ac39c54289e79afa1ce32111b9cc4f43b92c0f3780f9aed7

    SHA512

    0c9ec93899b320c130f32133e8eaafa8a15dc779117beb33819919c27ccf228081e51acc6dde1a39b4daff4daf5b86acd5d7aecd6d78f13d2dad63cdc87f9782

  • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015

    Filesize

    342B

    MD5

    233a55839de34d2798589ebbf7e15739

    SHA1

    f7195654ab90cff8ad459c05f47613204751e7d8

    SHA256

    4cbebd1a9065b234497763b3f9cc1338e08f0adf85227b1576b3888881d13c6c

    SHA512

    534f0a7f7a186a839c92236d6c8b102affb797911bd2bf31e3b3a35dd8f5a1cbbe31a46a627c5b6126a95e3dfb6d5ea6a08de1868b1fcc5894d2c7c779f1f241

  • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015

    Filesize

    342B

    MD5

    aed75f9de592aec1ec0d7652be910872

    SHA1

    7cc2587659dde7dd82509cc41373fdede5de0928

    SHA256

    2d27938714ab7271d170d80f8e91cf0bbb7be2a9cf0a37c997635da6a4f3b891

    SHA512

    45ddac2428cd0cb6a41d3550648fcd342385aa54aaf5f46e1aadd56fa7162c7cdae472c649188082e859588957e7c80229197d69f1b6efcaf87d43fe9e02321d

  • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015

    Filesize

    342B

    MD5

    0fb362ba99567620dc177ad6ad0c7c73

    SHA1

    b94422ec78ed0b0b3d098677becd6df2c9c97c74

    SHA256

    bbdb049f1abf3fc94c8ce3d6e109ddcea12532ec91a3a7747019c56193eb3a95

    SHA512

    7de23a07653326c53f9afcc6a8b0b0450064f3f02471ed34a648c9ddcf9babd91bf2ec53acf2ac705a418e26c1a520a3df8dc8de2e5307f0183b9872441abc39

  • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015

    Filesize

    342B

    MD5

    a503edd5e486030f9e8a53d41cfd0e0a

    SHA1

    257730622b10b296a83a38c80ecaf60e2542656e

    SHA256

    6fe35d2a2069ee427026bd8ff7ff05cacaffe0a4fe7e4cf04d51a815022dea8b

    SHA512

    d252865170c7a3b1470a874a051db9db435b430b6e367b7e16b5bcbed9a563171d3e3a854f6063ad5a56a47cce951592efbde54c497bf340d100dd2abb83403b

  • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015

    Filesize

    342B

    MD5

    869b7bc629a23bceb6f6e7202888dced

    SHA1

    7a4f42db1487fa78eb3f0e0c32cd0b3367f91a86

    SHA256

    f1e9a8bb657b2dcd53089c533dae569b9e0b65d169a49f3fd453bb020eccefec

    SHA512

    c9e8cbb7dedc509cee39132fecd212a8dabd0a507f8b6a54612012df54c944e59393f40e5fc4c67ef4e3a1706aa2a5351d9c240ca10fbecac05078ed07fe02ab

  • C:\Users\Admin\AppData\Local\Temp\CabF089.tmp

    Filesize

    70KB

    MD5

    49aebf8cbd62d92ac215b2923fb1b9f5

    SHA1

    1723be06719828dda65ad804298d0431f6aff976

    SHA256

    b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f

    SHA512

    bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b

  • C:\Users\Admin\AppData\Local\Temp\TarF148.tmp

    Filesize

    181KB

    MD5

    4ea6026cf93ec6338144661bf1202cd1

    SHA1

    a1dec9044f750ad887935a01430bf49322fbdcb7

    SHA256

    8efbc21559ef8b1bcf526800d8070baad42474ce7198e26fa771dbb41a76b1d8

    SHA512

    6c7e0980e39aacf4c3689802353f464a08cd17753bd210ee997e5f2a455deb4f287a9ef74d84579dbde49bc96213cd2b8b247723919c412ea980aa6e6bfe218b

  • \Windows\SysWOW64\rundll32Srv.exe

    Filesize

    55KB

    MD5

    ff5e1f27193ce51eec318714ef038bef

    SHA1

    b4fa74a6f4dab3a7ba702b6c8c129f889db32ca6

    SHA256

    fd6c69c345f1e32924f0a5bb7393e191b393a78d58e2c6413b03ced7482f2320

    SHA512

    c9d654ead35f40eea484a3dc5b5d0a44294b9e7b41a9bacdafdd463d3de9daa2a43237a5f113f6a9c8ea5e1366823fd3d83da18cd8197aa69a55e9f345512a7a

  • memory/1656-21-0x0000000000400000-0x000000000042E000-memory.dmp

    Filesize

    184KB

  • memory/1656-19-0x0000000000400000-0x000000000042E000-memory.dmp

    Filesize

    184KB

  • memory/1656-20-0x00000000001D0000-0x00000000001D1000-memory.dmp

    Filesize

    4KB

  • memory/1656-23-0x0000000000400000-0x000000000042E000-memory.dmp

    Filesize

    184KB

  • memory/1792-25-0x00000000001D0000-0x00000000001FE000-memory.dmp

    Filesize

    184KB

  • memory/1792-24-0x0000000010000000-0x0000000010015000-memory.dmp

    Filesize

    84KB

  • memory/1792-5-0x0000000010000000-0x0000000010015000-memory.dmp

    Filesize

    84KB

  • memory/1792-6-0x00000000001D0000-0x00000000001FE000-memory.dmp

    Filesize

    184KB

  • memory/1792-4-0x0000000010000000-0x0000000010015000-memory.dmp

    Filesize

    84KB

  • memory/3036-11-0x0000000000240000-0x000000000024F000-memory.dmp

    Filesize

    60KB

  • memory/3036-12-0x0000000000400000-0x000000000042E000-memory.dmp

    Filesize

    184KB

  • memory/3036-8-0x0000000000400000-0x000000000042E000-memory.dmp

    Filesize

    184KB