SYMBOLCOMMON_NAMEaka. SYNONYMS
win.pvzout (Back to overview)

PvzOut

Actor(s): Cleaver


There is no description at this point.

References
2016-04-06CylanceCylance
@techreport{cylance:20160406:operation:d4da7b5, author = {Cylance}, title = {{Operation Cleaver}}, date = {2016-04-06}, institution = {Cylance}, url = {https://www.cylance.com/content/dam/cylance/pages/operation-cleaver/Cylance_Operation_Cleaver_Report.pdf}, language = {English}, urldate = {2020-01-10} } Operation Cleaver
CsExt Jasus KAgent NetC PvzOut SynFlooder TinyZbot WndTest ZhCat ZhMimikatz Cleaver
Yara Rules
[TLP:WHITE] win_pvzout_auto (20201023 | autogenerated rule brought to you by yara-signator)
rule win_pvzout_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2020-12-22"
        version = "1"
        description = "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.pvzout"
        malpedia_rule_date = "20201222"
        malpedia_hash = "30354d830a29f0fbd3714d93d94dea941d77a130"
        malpedia_version = "20201023"
        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 = { 48 e21c 3e3f 19e9 73f8 dca10ebd24e8 }
            // n = 6, score = 200
            //   48                   | dec                 eax
            //   e21c                 | loop                0x1e
            //   3e3f                 | aas                 
            //   19e9                 | sbb                 ecx, ebp
            //   73f8                 | jae                 0xfffffffa
            //   dca10ebd24e8         | fsub                qword ptr [ecx - 0x17db42f2]

        $sequence_1 = { 5d bbedffffff 03dd 81eb00d00200 83bd8804000000 }
            // n = 5, score = 200
            //   5d                   | pop                 ebp
            //   bbedffffff           | mov                 ebx, 0xffffffed
            //   03dd                 | add                 ebx, ebp
            //   81eb00d00200         | sub                 ebx, 0x2d000
            //   83bd8804000000       | cmp                 dword ptr [ebp + 0x488], 0

        $sequence_2 = { 48 e21c 3e3f 19e9 73f8 dca10ebd24e8 252b0026cb }
            // n = 7, score = 200
            //   48                   | dec                 eax
            //   e21c                 | loop                0x1e
            //   3e3f                 | aas                 
            //   19e9                 | sbb                 ecx, ebp
            //   73f8                 | jae                 0xfffffffa
            //   dca10ebd24e8         | fsub                qword ptr [ecx - 0x17db42f2]
            //   252b0026cb           | and                 eax, 0xcb26002b

        $sequence_3 = { 0e 75a8 43 2f }
            // n = 4, score = 200
            //   0e                   | push                cs
            //   75a8                 | jne                 0xffffffaa
            //   43                   | inc                 ebx
            //   2f                   | das                 

        $sequence_4 = { 43 1dea50873a d4a1 0e }
            // n = 4, score = 200
            //   43                   | inc                 ebx
            //   1dea50873a           | sbb                 eax, 0x3a8750ea
            //   d4a1                 | aam                 0xa1
            //   0e                   | push                cs

        $sequence_5 = { 81eb00d00200 83bd8804000000 899d88040000 0f85cb030000 }
            // n = 4, score = 200
            //   81eb00d00200         | sub                 ebx, 0x2d000
            //   83bd8804000000       | cmp                 dword ptr [ebp + 0x488], 0
            //   899d88040000         | mov                 dword ptr [ebp + 0x488], ebx
            //   0f85cb030000         | jne                 0x3d1

        $sequence_6 = { 43 2f 3089f33d80f3 48 e21c 3e3f }
            // n = 6, score = 200
            //   43                   | inc                 ebx
            //   2f                   | das                 
            //   3089f33d80f3         | xor                 byte ptr [ecx - 0xc7fc20d], cl
            //   48                   | dec                 eax
            //   e21c                 | loop                0x1e
            //   3e3f                 | aas                 

        $sequence_7 = { 43 1dea50873a d4a1 0e 75a8 43 }
            // n = 6, score = 200
            //   43                   | inc                 ebx
            //   1dea50873a           | sbb                 eax, 0x3a8750ea
            //   d4a1                 | aam                 0xa1
            //   0e                   | push                cs
            //   75a8                 | jne                 0xffffffaa
            //   43                   | inc                 ebx

        $sequence_8 = { 51 ab 25b53ae778 f3bd95ab4ed8 fb }
            // n = 5, score = 200
            //   51                   | push                ecx
            //   ab                   | stosd               dword ptr es:[edi], eax
            //   25b53ae778           | and                 eax, 0x78e73ab5
            //   f3bd95ab4ed8         | mov                 ebp, 0xd84eab95
            //   fb                   | sti                 

        $sequence_9 = { 0e 75a8 43 1dea50873a d4a1 0e }
            // n = 6, score = 200
            //   0e                   | push                cs
            //   75a8                 | jne                 0xffffffaa
            //   43                   | inc                 ebx
            //   1dea50873a           | sbb                 eax, 0x3a8750ea
            //   d4a1                 | aam                 0xa1
            //   0e                   | push                cs

    condition:
        7 of them and filesize < 573440
}
[TLP:WHITE] win_pvzout_w0   (20170521 | Parviz tool used by attackers in Operation Cleaver)
rule win_pvzout_w0 {
	meta:
		description = "Parviz tool used by attackers in Operation Cleaver"
		reference = "http://cylance.com/assets/Cleaver/Cylance_Operation_Cleaver_Report.pdf"
		date = "2014/12/02"
		author = "Cylance Inc."
        malpedia_reference = "https://malpedia.caad.fkie.fraunhofer.de/details/win.pvzout"
        malpedia_version = "20170521"
        malpedia_license = "CC BY-NC-SA 4.0"
        malpedia_sharing = "TLP:WHITE"
	strings:
		$s1 = "Network Connectivity Module" wide
		$s2 = "OSPPSVC" wide
	condition:
		all of them
}
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