SYMBOLCOMMON_NAMEaka. SYNONYMS
win.logtu (Back to overview)

Logtu


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References
2022-08-08KasperskyKaspersky Lab ICS CERT
@techreport{cert:20220808:targeted:61c5617, author = {Kaspersky Lab ICS CERT}, title = {{Targeted attack on industrial enterprises and public institutions}}, date = {2022-08-08}, institution = {Kaspersky}, url = {https://ics-cert.kaspersky.com/media/Kaspersky-ICS-CERT-Targeted-attack-on-industrial-enterprises-and-public-institutions-En.pdf}, language = {English}, urldate = {2022-08-11} } Targeted attack on industrial enterprises and public institutions
Cotx RAT Logtu nccTrojan PortDoor
2022-04-02Dr.WebDr.Web
@online{drweb:20220402:study:3a784e2, author = {Dr.Web}, title = {{Study of targeted attacks on Russian research institutes}}, date = {2022-04-02}, organization = {Dr.Web}, url = {https://news.drweb.ru/show/?i=14177}, language = {Russian}, urldate = {2022-08-09} } Study of targeted attacks on Russian research institutes
Logtu
Yara Rules
[TLP:WHITE] win_logtu_auto (20230125 | Detects win.logtu.)
rule win_logtu_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2023-01-25"
        version = "1"
        description = "Detects win.logtu."
        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.logtu"
        malpedia_rule_date = "20230124"
        malpedia_hash = "2ee0eebba83dce3d019a90519f2f972c0fcf9686"
        malpedia_version = "20230125"
        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 = { 50 6a64 6a00 ff15???????? 85c0 7509 }
            // n = 6, score = 300
            //   50                   | push                eax
            //   6a64                 | push                0x64
            //   6a00                 | push                0
            //   ff15????????         |                     
            //   85c0                 | test                eax, eax
            //   7509                 | jne                 0xb

        $sequence_1 = { 8bce 68???????? e8???????? 6a3c }
            // n = 4, score = 300
            //   8bce                 | mov                 ecx, esi
            //   68????????           |                     
            //   e8????????           |                     
            //   6a3c                 | push                0x3c

        $sequence_2 = { 6800080000 50 8d85fcf7ffff 50 }
            // n = 4, score = 300
            //   6800080000           | push                0x800
            //   50                   | push                eax
            //   8d85fcf7ffff         | lea                 eax, [ebp - 0x804]
            //   50                   | push                eax

        $sequence_3 = { 6a01 8bf0 8d85a4fdffff 68???????? 50 ff15???????? }
            // n = 6, score = 300
            //   6a01                 | push                1
            //   8bf0                 | mov                 esi, eax
            //   8d85a4fdffff         | lea                 eax, [ebp - 0x25c]
            //   68????????           |                     
            //   50                   | push                eax
            //   ff15????????         |                     

        $sequence_4 = { 8d8534ffffff 50 8d8514fcffff 50 }
            // n = 4, score = 300
            //   8d8534ffffff         | lea                 eax, [ebp - 0xcc]
            //   50                   | push                eax
            //   8d8514fcffff         | lea                 eax, [ebp - 0x3ec]
            //   50                   | push                eax

        $sequence_5 = { 6a01 8bf0 8d85a4fdffff 68???????? 50 ff15???????? 83c40c }
            // n = 7, score = 300
            //   6a01                 | push                1
            //   8bf0                 | mov                 esi, eax
            //   8d85a4fdffff         | lea                 eax, [ebp - 0x25c]
            //   68????????           |                     
            //   50                   | push                eax
            //   ff15????????         |                     
            //   83c40c               | add                 esp, 0xc

        $sequence_6 = { 8d8578faffff 50 8d8584faffff 50 }
            // n = 4, score = 300
            //   8d8578faffff         | lea                 eax, [ebp - 0x588]
            //   50                   | push                eax
            //   8d8584faffff         | lea                 eax, [ebp - 0x57c]
            //   50                   | push                eax

        $sequence_7 = { 8d8578faffff 50 8d8584faffff 50 8d8574faffff }
            // n = 5, score = 300
            //   8d8578faffff         | lea                 eax, [ebp - 0x588]
            //   50                   | push                eax
            //   8d8584faffff         | lea                 eax, [ebp - 0x57c]
            //   50                   | push                eax
            //   8d8574faffff         | lea                 eax, [ebp - 0x58c]

        $sequence_8 = { 50 ff15???????? 6a01 8bf0 8d85a4fdffff 68???????? 50 }
            // n = 7, score = 300
            //   50                   | push                eax
            //   ff15????????         |                     
            //   6a01                 | push                1
            //   8bf0                 | mov                 esi, eax
            //   8d85a4fdffff         | lea                 eax, [ebp - 0x25c]
            //   68????????           |                     
            //   50                   | push                eax

        $sequence_9 = { 50 8d8574faffff 50 8d8534ffffff }
            // n = 4, score = 300
            //   50                   | push                eax
            //   8d8574faffff         | lea                 eax, [ebp - 0x58c]
            //   50                   | push                eax
            //   8d8534ffffff         | lea                 eax, [ebp - 0xcc]

    condition:
        7 of them and filesize < 924672
}
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