SYMBOLCOMMON_NAMEaka. SYNONYMS
win.pitou (Back to overview)

Pitou


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References
2019-07-08Johannes Bader
@online{bader:20190708:dga:0c56ba3, author = {Johannes Bader}, title = {{The DGA of Pitou}}, date = {2019-07-08}, url = {https://johannesbader.ch/2019/07/the-dga-of-pitou/}, language = {English}, urldate = {2020-01-10} } The DGA of Pitou
Pitou
2019-06-25SANSBrad Duncan
@online{duncan:20190625:rig:31ecb33, author = {Brad Duncan}, title = {{Rig Exploit Kit sends Pitou.B Trojan}}, date = {2019-06-25}, organization = {SANS}, url = {https://isc.sans.edu/diary/rss/25068}, language = {English}, urldate = {2019-12-17} } Rig Exploit Kit sends Pitou.B Trojan
Pitou
2018-01-15VirITGianfranco Tonello
@online{tonello:20180115:bootkits:dd9dffc, author = {Gianfranco Tonello}, title = {{Bootkits are not dead. Pitou is back!}}, date = {2018-01-15}, organization = {VirIT}, url = {https://www.tgsoft.it/english/news_archivio_eng.asp?id=884}, language = {English}, urldate = {2020-01-09} } Bootkits are not dead. Pitou is back!
Pitou
2014-09-04F-SecureF-Secure Labs
@techreport{labs:20140904:pitou:211eac4, author = {F-Secure Labs}, title = {{PITOU: The "silent" resurrection of the notorious Srizbi kernel spambot}}, date = {2014-09-04}, institution = {F-Secure}, url = {https://www.f-secure.com/documents/996508/1030745/pitou_whitepaper.pdf}, language = {English}, urldate = {2020-01-13} } PITOU: The "silent" resurrection of the notorious Srizbi kernel spambot
Pitou
Yara Rules
[TLP:WHITE] win_pitou_auto (20200529 | autogenerated rule brought to you by yara-signator)
rule win_pitou_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2020-05-30"
        version = "1"
        description = "autogenerated rule brought to you by yara-signator"
        tool = "yara-signator v0.4.0"
        tool_config = "callsandjumps;datarefs;binvalue"
        malpedia_reference = "https://malpedia.caad.fkie.fraunhofer.de/details/win.pitou"
        malpedia_rule_date = "20200529"
        malpedia_hash = "92c362319514e5a6da26204961446caa3a8b32a8"
        malpedia_version = "20200529"
        malpedia_license = "CC BY-NC-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 / approach 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 80ef18 80ff10 5b }
            // n = 4, score = 700
            //   53                   | dec                 ecx
            //   80ef18               | cmp                 eax, ecx
            //   80ff10               | jb                  0xfffe91ae
            //   5b                   | dec                 ecx

        $sequence_1 = { 8a6201 80f457 8acc 80e103 8aec c0ed03 80e507 }
            // n = 7, score = 700
            //   8a6201               | mov                 ecx, dword ptr [ebp - 4]
            //   80f457               | mov                 dword ptr [ebp + ecx*4 - 0x1e0], 0
            //   8acc                 | jmp                 0x11bd
            //   80e103               | add                 eax, 1
            //   8aec                 | mov                 dword ptr [ebp - 4], eax
            //   c0ed03               | cmp                 dword ptr [ebp - 4], 0x75
            //   80e507               | jae                 0x1201

        $sequence_2 = { c1e305 03c3 8bda c1eb02 }
            // n = 4, score = 700
            //   c1e305               | adc                 eax, 0x3063a24
            //   03c3                 | scasd               eax, dword ptr es:[edi]
            //   8bda                 | push                edi
            //   c1eb02               | push                ebx

        $sequence_3 = { 8bda c1e305 03c3 8bda }
            // n = 4, score = 700
            //   8bda                 | mov                 edx, dword ptr [edi + 4]
            //   c1e305               | test                ax, ax
            //   03c3                 | je                  0x5c2
            //   8bda                 | cmp                 eax, 3

        $sequence_4 = { 33c0 ac 8bda c1e305 03c3 }
            // n = 5, score = 700
            //   33c0                 | shr                 ecx, 1
            //   ac                   | sub                 dword ptr [esi + 0x2c], eax
            //   8bda                 | lea                 ecx, [eax + edx]
            //   c1e305               | mov                 dword ptr [esi + 0x28], ecx
            //   03c3                 | mov                 ecx, esi

        $sequence_5 = { 8a6201 80f457 8acc 80e103 }
            // n = 4, score = 700
            //   8a6201               | mov                 dword ptr [edi], eax
            //   80f457               | cmp                 cx, word ptr [edx + 4]
            //   8acc                 | je                  0x11b17
            //   80e103               | mov                 dword ptr [ebp - 4], 0

        $sequence_6 = { 8bda c1e305 03c3 8bda c1eb02 03c3 }
            // n = 6, score = 700
            //   8bda                 | lea                 ecx, [esi + ebx]
            //   c1e305               | push                ecx
            //   03c3                 | mov                 eax, dword ptr [ebp + 0x20]
            //   8bda                 | test                eax, eax
            //   c1eb02               | jne                 0xeb61
            //   03c3                 | push                edx

        $sequence_7 = { 8a6201 80f457 8acc 80e103 8aec c0ed03 }
            // n = 6, score = 700
            //   8a6201               | mov                 esp, ebp
            //   80f457               | test                eax, eax
            //   8acc                 | jne                 0xd46b
            //   80e103               | test                ecx, ecx
            //   8aec                 | je                  0x8048
            //   c0ed03               | lea                 edx, [ebp - 0x834]

        $sequence_8 = { 2bc2 d1e8 03c2 c1e81e 69c0ffffff7f }
            // n = 5, score = 700
            //   2bc2                 | xor                 ebp, dword ptr [edi]
            //   d1e8                 | test                esp, esi
            //   03c2                 | dec                 edi
            //   c1e81e               | push                ss
            //   69c0ffffff7f         | pop                 ss

        $sequence_9 = { 03c3 8bda c1eb02 03c3 33d0 }
            // n = 5, score = 700
            //   03c3                 | scasd               eax, dword ptr es:[edi]
            //   8bda                 | push                ebx
            //   c1eb02               | add                 ebx, dword ptr [edx + 0xb782f14]
            //   03c3                 | mov                 al, 0x69
            //   33d0                 | adc                 eax, 0x15169a41

    condition:
        7 of them and filesize < 1106944
}
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