SYMBOLCOMMON_NAMEaka. SYNONYMS
win.evilgrab (Back to overview)

EvilGrab

aka: Vidgrab

Actor(s): Stone Panda


There is no description at this point.

References
2015-08Arbor NetworksASERT Team
@online{team:201508:uncovering:121e5cf, author = {ASERT Team}, title = {{Uncovering the Seven Pointed Dagger}}, date = {2015-08}, organization = {Arbor Networks}, url = {https://app.box.com/s/z1uanuv1vn3vw5iket1r6bqrmlra0gpn}, language = {English}, urldate = {2020-05-18} } Uncovering the Seven Pointed Dagger
9002 RAT EvilGrab PlugX Trochilus RAT Group 27
2015-02-06CrowdStrikeCrowdStrike
@techreport{crowdstrike:20150206:crowdstrike:fbcc37f, author = {CrowdStrike}, title = {{CrowdStrike Global Threat Intel Report 2014}}, date = {2015-02-06}, institution = {CrowdStrike}, url = {https://web.archive.org/web/20200509171721/https://raw.githubusercontent.com/fdiskyou/threat-INTel/master/2015/GlobalThreatIntelReport.pdf}, language = {English}, urldate = {2020-05-11} } CrowdStrike Global Threat Intel Report 2014
BlackPOS CryptoLocker Derusbi Elise Enfal EvilGrab Gameover P2P HttpBrowser Medusa Mirage Naikon NetTraveler pirpi PlugX Poison Ivy Sakula RAT Sinowal sykipot taidoor
Yara Rules
[TLP:WHITE] win_evilgrab_auto (20201014 | autogenerated rule brought to you by yara-signator)
rule win_evilgrab_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2020-10-14"
        version = "1"
        description = "autogenerated rule brought to you by yara-signator"
        tool = "yara-signator v0.5.0"
        tool_config = "callsandjumps;datarefs;binvalue"
        malpedia_reference = "https://malpedia.caad.fkie.fraunhofer.de/details/win.evilgrab"
        malpedia_rule_date = "20201014"
        malpedia_hash = "a7e3bd57eaf12bf3ea29a863c041091ba3af9ac9"
        malpedia_version = "20201014"
        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 = { 53 55 56 8bf1 57 89742414 8a8620030000 }
            // n = 7, score = 200
            //   53                   | push                ebx
            //   55                   | push                ebp
            //   56                   | push                esi
            //   8bf1                 | mov                 esi, ecx
            //   57                   | push                edi
            //   89742414             | mov                 dword ptr [esp + 0x14], esi
            //   8a8620030000         | mov                 al, byte ptr [esi + 0x320]

        $sequence_1 = { f3a4 8d85e0efffff 50 6a00 }
            // n = 4, score = 200
            //   f3a4                 | rep movsb           byte ptr es:[edi], byte ptr [esi]
            //   8d85e0efffff         | lea                 eax, [ebp - 0x1020]
            //   50                   | push                eax
            //   6a00                 | push                0

        $sequence_2 = { 81c410020000 c3 8d842418010000 57 50 e8???????? 8dbc2420010000 }
            // n = 7, score = 200
            //   81c410020000         | add                 esp, 0x210
            //   c3                   | ret                 
            //   8d842418010000       | lea                 eax, [esp + 0x118]
            //   57                   | push                edi
            //   50                   | push                eax
            //   e8????????           |                     
            //   8dbc2420010000       | lea                 edi, [esp + 0x120]

        $sequence_3 = { 2bc7 48 50 6a00 8b4b50 51 6a01 }
            // n = 7, score = 200
            //   2bc7                 | sub                 eax, edi
            //   48                   | dec                 eax
            //   50                   | push                eax
            //   6a00                 | push                0
            //   8b4b50               | mov                 ecx, dword ptr [ebx + 0x50]
            //   51                   | push                ecx
            //   6a01                 | push                1

        $sequence_4 = { 55 50 51 ffd3 85c0 0f85d3000000 68ff000000 }
            // n = 7, score = 200
            //   55                   | push                ebp
            //   50                   | push                eax
            //   51                   | push                ecx
            //   ffd3                 | call                ebx
            //   85c0                 | test                eax, eax
            //   0f85d3000000         | jne                 0xd9
            //   68ff000000           | push                0xff

        $sequence_5 = { c78514f6ffff00000000 b8???????? c3 8b8df0f5ffff 8b5124 89951cf6ffff b8???????? }
            // n = 7, score = 200
            //   c78514f6ffff00000000     | mov    dword ptr [ebp - 0x9ec], 0
            //   b8????????           |                     
            //   c3                   | ret                 
            //   8b8df0f5ffff         | mov                 ecx, dword ptr [ebp - 0xa10]
            //   8b5124               | mov                 edx, dword ptr [ecx + 0x24]
            //   89951cf6ffff         | mov                 dword ptr [ebp - 0x9e4], edx
            //   b8????????           |                     

        $sequence_6 = { f3a4 8dbdecfeffff 8d9544fcffff 83c9ff f2ae f7d1 2bf9 }
            // n = 7, score = 200
            //   f3a4                 | rep movsb           byte ptr es:[edi], byte ptr [esi]
            //   8dbdecfeffff         | lea                 edi, [ebp - 0x114]
            //   8d9544fcffff         | lea                 edx, [ebp - 0x3bc]
            //   83c9ff               | or                  ecx, 0xffffffff
            //   f2ae                 | repne scasb         al, byte ptr es:[edi]
            //   f7d1                 | not                 ecx
            //   2bf9                 | sub                 edi, ecx

        $sequence_7 = { 5e 5b c20400 6a04 6a00 53 ff15???????? }
            // n = 7, score = 200
            //   5e                   | pop                 esi
            //   5b                   | pop                 ebx
            //   c20400               | ret                 4
            //   6a04                 | push                4
            //   6a00                 | push                0
            //   53                   | push                ebx
            //   ff15????????         |                     

        $sequence_8 = { 56 ffd7 83c408 8bf0 8d842484000000 }
            // n = 5, score = 200
            //   56                   | push                esi
            //   ffd7                 | call                edi
            //   83c408               | add                 esp, 8
            //   8bf0                 | mov                 esi, eax
            //   8d842484000000       | lea                 eax, [esp + 0x84]

        $sequence_9 = { 3c30 7508 85f6 746e b029 eb6a 3c31 }
            // n = 7, score = 200
            //   3c30                 | cmp                 al, 0x30
            //   7508                 | jne                 0xa
            //   85f6                 | test                esi, esi
            //   746e                 | je                  0x70
            //   b029                 | mov                 al, 0x29
            //   eb6a                 | jmp                 0x6c
            //   3c31                 | cmp                 al, 0x31

    condition:
        7 of them and filesize < 327680
}
[TLP:WHITE] win_evilgrab_w0   (20170517 | Vidgrab code tricks)
/*
    This Yara ruleset is under the GNU-GPLv2 license (http://www.gnu.org/licenses/gpl-2.0.html) and open to any user or organization, as    long as you use it under this license.

*/

rule win_evilgrab_w0 {
    meta:
        description = "Vidgrab code tricks"
        author = "Seth Hardy"
        last_modified = "2014-06-20"
		source = "https://github.com/mattulm/sfiles_yara/blob/master/malware/Vidgrab.yar"
        malpedia_reference = "https://malpedia.caad.fkie.fraunhofer.de/details/win.evilgrab"
        malpedia_version = "20170517"
        malpedia_license = "CC BY-NC-SA 4.0"
        malpedia_sharing = "TLP:WHITE"
    strings:
        $divbyzero = { B8 02 00 00 00 48 48 BA 02 00 00 00 83 F2 02 F7 F0 }
        // add eax, ecx; xor byte ptr [eax], ??h; inc ecx
        $xorloop = { 03 C1 80 30 (66 | 58) 41 }
        $junk = { 8B 4? ?? 8B 4? ?? 03 45 08 52 5A }
        
    condition:
        all of them
}
[TLP:WHITE] win_evilgrab_w1   (20170517 | Vidgrab Identifying Strings)
/*
    This Yara ruleset is under the GNU-GPLv2 license (http://www.gnu.org/licenses/gpl-2.0.html) and open to any user or organization, as    long as you use it under this license.

*/

rule win_evilgrab_w1 {
    meta:
        description = "Vidgrab Identifying Strings"
        author = "Seth Hardy"
        last_modified = "2014-06-20"
		source = "https://github.com/mattulm/sfiles_yara/blob/master/malware/Vidgrab.yar"
        malpedia_reference = "https://malpedia.caad.fkie.fraunhofer.de/details/win.evilgrab"
        malpedia_version = "20170517"
        malpedia_license = "CC BY-NC-SA 4.0"
        malpedia_sharing = "TLP:WHITE"
    strings:
        $s1 = "IDI_ICON5" wide ascii
        $s2 = "starter.exe"
        $s3 = "wmifw.exe"
        $s4 = "Software\\rar"
        $s5 = "tmp092.tmp"
        $s6 = "temp1.exe"
        
    condition:
       3 of them
}
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