SYMBOLCOMMON_NAMEaka. SYNONYMS
win.ngioweb (Back to overview)

Ngioweb

aka: Grobios

There is no description at this point.

References
2018-08-05Check PointAlexey Bukhteyev
@online{bukhteyev:20180805:ramnits:1268bad, author = {Alexey Bukhteyev}, title = {{Ramnit’s Network of Proxy Servers}}, date = {2018-08-05}, organization = {Check Point}, url = {https://research.checkpoint.com/ramnits-network-proxy-servers/}, language = {English}, urldate = {2020-01-09} } Ramnit’s Network of Proxy Servers
Ngioweb Ramnit
2018-05-14FireEyeIrshad Muhammad, Shahzad Ahmed, Hassan Faizan, Zain Gardezi
@online{muhammad:20180514:deep:d434cb2, author = {Irshad Muhammad and Shahzad Ahmed and Hassan Faizan and Zain Gardezi}, title = {{A Deep Dive Into RIG Exploit Kit Delivering Grobios Trojan}}, date = {2018-05-14}, organization = {FireEye}, url = {https://www.fireeye.com/blog/threat-research/2018/05/deep-dive-into-rig-exploit-kit-delivering-grobios-trojan.html}, language = {English}, urldate = {2019-12-20} } A Deep Dive Into RIG Exploit Kit Delivering Grobios Trojan
Ngioweb
Yara Rules
[TLP:WHITE] win_ngioweb_auto (20220411 | Detects win.ngioweb.)
rule win_ngioweb_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2022-04-08"
        version = "1"
        description = "Detects win.ngioweb."
        info = "autogenerated rule brought to you by yara-signator"
        tool = "yara-signator v0.6.0"
        signator_config = "callsandjumps;datarefs;binvalue"
        malpedia_reference = "https://malpedia.caad.fkie.fraunhofer.de/details/win.ngioweb"
        malpedia_rule_date = "20220405"
        malpedia_hash = "ecd38294bd47d5589be5cd5490dc8bb4804afc2a"
        malpedia_version = "20220411"
        malpedia_license = "CC BY-SA 4.0"
        malpedia_sharing = "TLP:WHITE"

    /* DISCLAIMER
     * The strings used in this rule have been automatically selected from the
     * disassembly of memory dumps and unpacked files, using YARA-Signator.
     * The code and documentation is published here:
     * https://github.com/fxb-cocacoding/yara-signator
     * As Malpedia is used as data source, please note that for a given
     * number of families, only single samples are documented.
     * This likely impacts the degree of generalization these rules will offer.
     * Take the described generation method also into consideration when you
     * apply the rules in your use cases and assign them confidence levels.
     */


    strings:
        $sequence_0 = { 8b4c241c 8d0488 89442414 8b00 85c0 89442410 742a }
            // n = 7, score = 500
            //   8b4c241c             | mov                 ecx, dword ptr [esp + 0x1c]
            //   8d0488               | lea                 eax, dword ptr [eax + ecx*4]
            //   89442414             | mov                 dword ptr [esp + 0x14], eax
            //   8b00                 | mov                 eax, dword ptr [eax]
            //   85c0                 | test                eax, eax
            //   89442410             | mov                 dword ptr [esp + 0x10], eax
            //   742a                 | je                  0x2c

        $sequence_1 = { 6a00 51 e8???????? 8b4570 5f 5e 5b }
            // n = 7, score = 500
            //   6a00                 | push                0
            //   51                   | push                ecx
            //   e8????????           |                     
            //   8b4570               | mov                 eax, dword ptr [ebp + 0x70]
            //   5f                   | pop                 edi
            //   5e                   | pop                 esi
            //   5b                   | pop                 ebx

        $sequence_2 = { 33ff 3bf2 0f8482000000 8b8680000000 83f802 7277 0fb73e }
            // n = 7, score = 500
            //   33ff                 | xor                 edi, edi
            //   3bf2                 | cmp                 esi, edx
            //   0f8482000000         | je                  0x88
            //   8b8680000000         | mov                 eax, dword ptr [esi + 0x80]
            //   83f802               | cmp                 eax, 2
            //   7277                 | jb                  0x79
            //   0fb73e               | movzx               edi, word ptr [esi]

        $sequence_3 = { e8???????? 8945f8 eb7f 837dfc02 7579 394e10 8d8574ffffff }
            // n = 7, score = 500
            //   e8????????           |                     
            //   8945f8               | mov                 dword ptr [ebp - 8], eax
            //   eb7f                 | jmp                 0x81
            //   837dfc02             | cmp                 dword ptr [ebp - 4], 2
            //   7579                 | jne                 0x7b
            //   394e10               | cmp                 dword ptr [esi + 0x10], ecx
            //   8d8574ffffff         | lea                 eax, dword ptr [ebp - 0x8c]

        $sequence_4 = { c745d801140200 66895ddc 66895dde c645e0c0 885de1 885de2 885de3 }
            // n = 7, score = 500
            //   c745d801140200       | mov                 dword ptr [ebp - 0x28], 0x21401
            //   66895ddc             | mov                 word ptr [ebp - 0x24], bx
            //   66895dde             | mov                 word ptr [ebp - 0x22], bx
            //   c645e0c0             | mov                 byte ptr [ebp - 0x20], 0xc0
            //   885de1               | mov                 byte ptr [ebp - 0x1f], bl
            //   885de2               | mov                 byte ptr [ebp - 0x1e], bl
            //   885de3               | mov                 byte ptr [ebp - 0x1d], bl

        $sequence_5 = { 8bc6 5e c20800 55 8bec 56 33f6 }
            // n = 7, score = 500
            //   8bc6                 | mov                 eax, esi
            //   5e                   | pop                 esi
            //   c20800               | ret                 8
            //   55                   | push                ebp
            //   8bec                 | mov                 ebp, esp
            //   56                   | push                esi
            //   33f6                 | xor                 esi, esi

        $sequence_6 = { 66895510 66c7450e3000 6689450c 66c7450a6400 66c745084900 66894506 66c745047400 }
            // n = 7, score = 500
            //   66895510             | mov                 word ptr [ebp + 0x10], dx
            //   66c7450e3000         | mov                 word ptr [ebp + 0xe], 0x30
            //   6689450c             | mov                 word ptr [ebp + 0xc], ax
            //   66c7450a6400         | mov                 word ptr [ebp + 0xa], 0x64
            //   66c745084900         | mov                 word ptr [ebp + 8], 0x49
            //   66894506             | mov                 word ptr [ebp + 6], ax
            //   66c745047400         | mov                 word ptr [ebp + 4], 0x74

        $sequence_7 = { 33c9 3bf1 756a 803b2e 755a be04010000 397508 }
            // n = 7, score = 500
            //   33c9                 | xor                 ecx, ecx
            //   3bf1                 | cmp                 esi, ecx
            //   756a                 | jne                 0x6c
            //   803b2e               | cmp                 byte ptr [ebx], 0x2e
            //   755a                 | jne                 0x5c
            //   be04010000           | mov                 esi, 0x104
            //   397508               | cmp                 dword ptr [ebp + 8], esi

        $sequence_8 = { e8???????? 8145fc08020000 81c304010000 817dfc1a060000 76a8 eb16 ff7508 }
            // n = 7, score = 500
            //   e8????????           |                     
            //   8145fc08020000       | add                 dword ptr [ebp - 4], 0x208
            //   81c304010000         | add                 ebx, 0x104
            //   817dfc1a060000       | cmp                 dword ptr [ebp - 4], 0x61a
            //   76a8                 | jbe                 0xffffffaa
            //   eb16                 | jmp                 0x18
            //   ff7508               | push                dword ptr [ebp + 8]

        $sequence_9 = { 8bec 83ec14 53 56 8b7508 33db 3bf3 }
            // n = 7, score = 500
            //   8bec                 | mov                 ebp, esp
            //   83ec14               | sub                 esp, 0x14
            //   53                   | push                ebx
            //   56                   | push                esi
            //   8b7508               | mov                 esi, dword ptr [ebp + 8]
            //   33db                 | xor                 ebx, ebx
            //   3bf3                 | cmp                 esi, ebx

    condition:
        7 of them and filesize < 204800
}
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