SYMBOLCOMMON_NAMEaka. SYNONYMS
win.tellyouthepass (Back to overview)

TellYouThePass


There is no description at this point.

References
2022-01-11CrowdStrikeAnmol Maurya
@online{maurya:20220111:tellyouthepass:b31fcb8, author = {Anmol Maurya}, title = {{TellYouThePass Ransomware Analysis Reveals a Modern Reinterpretation Using Golang}}, date = {2022-01-11}, organization = {CrowdStrike}, url = {https://www.crowdstrike.com/blog/tellyouthepass-ransomware-analysis-reveals-modern-reinterpretation-using-golang/}, language = {English}, urldate = {2022-01-18} } TellYouThePass Ransomware Analysis Reveals a Modern Reinterpretation Using Golang
TellYouThePass
2021-12-23SymantecSiddhesh Chandrayan
@online{chandrayan:20211223:log4j:58ea562, author = {Siddhesh Chandrayan}, title = {{Log4j Vulnerabilities: Attack Insights}}, date = {2021-12-23}, organization = {Symantec}, url = {https://symantec-enterprise-blogs.security.com/blogs/threat-intelligence/log4j-vulnerabilities-attacks}, language = {English}, urldate = {2022-01-25} } Log4j Vulnerabilities: Attack Insights
Tsunami Conti Dridex Khonsari Orcus RAT TellYouThePass
Yara Rules
[TLP:WHITE] win_tellyouthepass_auto (20221125 | Detects win.tellyouthepass.)
rule win_tellyouthepass_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2022-11-21"
        version = "1"
        description = "Detects win.tellyouthepass."
        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.tellyouthepass"
        malpedia_rule_date = "20221118"
        malpedia_hash = "e0702e2e6d1d00da65c8a29a4ebacd0a4c59e1af"
        malpedia_version = "20221125"
        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 = { 90 488b4a38 4883c107 48c1e903 48894c2478 31c0 4531d2 }
            // n = 7, score = 100
            //   90                   | mov                 dword ptr [eax + 0x10], ecx
            //   488b4a38             | dec                 eax
            //   4883c107             | mov                 ebx, eax
            //   48c1e903             | dec                 eax
            //   48894c2478           | lea                 eax, [0xdfb9a]
            //   31c0                 | dec                 eax
            //   4531d2               | mov                 esi, dword ptr [esp + 0x48]

        $sequence_1 = { e8???????? 488b942490000000 807a4800 7414 488b542450 488b9c2490000000 4c8b6c2478 }
            // n = 7, score = 100
            //   e8????????           |                     
            //   488b942490000000     | mov                 dword ptr [esp + 0x98], ecx
            //   807a4800             | movzx               esi, byte ptr [esp + 0x2f]
            //   7414                 | inc                 eax
            //   488b542450           | test                dh, 2
            //   488b9c2490000000     | je                  0x1aad
            //   4c8b6c2478           | dec                 eax

        $sequence_2 = { e8???????? 488b742440 4889ca 4889c1 4889df 0fbae208 7206 }
            // n = 7, score = 100
            //   e8????????           |                     
            //   488b742440           | dec                 eax
            //   4889ca               | lea                 ecx, [esp + 0x58]
            //   4889c1               | dec                 esp
            //   4889df               | mov                 eax, dword ptr [esp + 0x288]
            //   0fbae208             | nop                 
            //   7206                 | inc                 ecx

        $sequence_3 = { e8???????? 488d05dab90d00 488d1d63831400 e8???????? 488b7c2458 488d7701 488b542468 }
            // n = 7, score = 100
            //   e8????????           |                     
            //   488d05dab90d00       | ret                 
            //   488d1d63831400       | dec                 eax
            //   e8????????           |                     
            //   488b7c2458           | lea                 eax, [0x589c4]
            //   488d7701             | dec                 eax
            //   488b542468           | mov                 ebx, dword ptr [esp + 0x110]

        $sequence_4 = { bb1a000000 e8???????? 488b442420 e8???????? 488d05a8761700 bb02000000 e8???????? }
            // n = 7, score = 100
            //   bb1a000000           | add                 esp, 0xb0
            //   e8????????           |                     
            //   488b442420           | dec                 eax
            //   e8????????           |                     
            //   488d05a8761700       | mov                 ebp, dword ptr [esp + 0xa8]
            //   bb02000000           | dec                 eax
            //   e8????????           |                     

        $sequence_5 = { 4989d9 480f4fdf 90 4c39c6 7440 4889542430 4c894c2470 }
            // n = 7, score = 100
            //   4989d9               | mov                 dword ptr [esp + 0x90], eax
            //   480f4fdf             | nop                 
            //   90                   | dec                 eax
            //   4c39c6               | mov                 edx, dword ptr [eax + 0x48]
            //   7440                 | dec                 eax
            //   4889542430           | mov                 eax, ebx
            //   4c894c2470           | dec                 eax

        $sequence_6 = { e8???????? 488b842400020000 e8???????? 488d052ca11900 bb07000000 6690 e8???????? }
            // n = 7, score = 100
            //   e8????????           |                     
            //   488b842400020000     | dec                 eax
            //   e8????????           |                     
            //   488d052ca11900       | lea                 eax, [0x107297]
            //   bb07000000           | dec                 eax
            //   6690                 | lea                 eax, [0xc4985]
            //   e8????????           |                     

        $sequence_7 = { e8???????? e8???????? 488b442440 4885c0 751b e8???????? 488d05ac0d1b00 }
            // n = 7, score = 100
            //   e8????????           |                     
            //   e8????????           |                     
            //   488b442440           | xor                 eax, eax
            //   4885c0               | mov                 ecx, 1
            //   751b                 | dec                 eax
            //   e8????????           |                     
            //   488d05ac0d1b00       | mov                 ebp, dword ptr [esp + 0x70]

        $sequence_8 = { e8???????? 8b4358 4889442470 e8???????? 488d050c7b1900 bb13000000 e8???????? }
            // n = 7, score = 100
            //   e8????????           |                     
            //   8b4358               | mov                 ebx, edx
            //   4889442470           | dec                 eax
            //   e8????????           |                     
            //   488d050c7b1900       | lea                 ecx, [0x126434]
            //   bb13000000           | dec                 eax
            //   e8????????           |                     

        $sequence_9 = { 84db 741e 488b442460 8b5c2468 4c8b8c2490000000 4c8b542438 4989f0 }
            // n = 7, score = 100
            //   84db                 | dec                 eax
            //   741e                 | mov                 edx, dword ptr [eax + 0x118]
            //   488b442460           | dec                 eax
            //   8b5c2468             | mov                 ebx, dword ptr [eax + 0x108]
            //   4c8b8c2490000000     | dec                 eax
            //   4c8b542438           | lea                 edi, [esp + 0x30]
            //   4989f0               | dec                 eax

    condition:
        7 of them and filesize < 7152640
}
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