SYMBOLCOMMON_NAMEaka. SYNONYMS
win.backspace (Back to overview)

backspace

aka: Lecna, ZRLnk

Actor(s): APT 30


There is no description at this point.

References
2020-06-19Positive TechnologiesAlexey Vishnyakov
@online{vishnyakov:20200619:eagle:01efbbd, author = {Alexey Vishnyakov}, title = {{The eagle eye is back: old and new backdoors from APT30}}, date = {2020-06-19}, organization = {Positive Technologies}, url = {https://www.ptsecurity.com/ww-en/analytics/pt-esc-threat-intelligence/eagle-eye-is-back-apt30/}, language = {English}, urldate = {2020-06-20} } The eagle eye is back: old and new backdoors from APT30
backspace NETEAGLE RCtrl RHttpCtrl APT30
2020SecureworksSecureWorks
@online{secureworks:2020:bronze:f4862d1, author = {SecureWorks}, title = {{BRONZE GENEVA}}, date = {2020}, organization = {Secureworks}, url = {https://www.secureworks.com/research/threat-profiles/bronze-geneva}, language = {English}, urldate = {2020-05-23} } BRONZE GENEVA
backspace APT30
2015-04-15FireEyeFireEye
@techreport{fireeye:20150415:apt30:d09a09c, author = {FireEye}, title = {{APT30 and the Mechanics of a Long-Running Cyber Espionage Campaign}}, date = {2015-04-15}, institution = {FireEye}, url = {https://www.mandiant.com/sites/default/files/2021-09/rpt-apt30.pdf}, language = {English}, urldate = {2022-08-25} } APT30 and the Mechanics of a Long-Running Cyber Espionage Campaign
backspace FLASHFLOOD NETEAGLE SHIPSHAPE SPACESHIP APT30
2015-04FireEyeFireEye
@techreport{fireeye:201504:apt30:0129bf7, author = {FireEye}, title = {{APT30 AND THE MECHANICS OF A LONG-RUNNING CYBER ESPIONAGE OPERATION}}, date = {2015-04}, institution = {FireEye}, url = {https://www2.fireeye.com/rs/fireye/images/rpt-apt30.pdf}, language = {English}, urldate = {2020-01-07} } APT30 AND THE MECHANICS OF A LONG-RUNNING CYBER ESPIONAGE OPERATION
BACKBEND backspace CREAMSICLE FLASHFLOOD GEMCUTTER MILKMAID Naikon NETEAGLE ORANGEADE SHIPSHAPE SPACESHIP SslMM Sys10 WinMM xsPlus APT30
Yara Rules
[TLP:WHITE] win_backspace_auto (20221125 | Detects win.backspace.)
rule win_backspace_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2022-11-21"
        version = "1"
        description = "Detects win.backspace."
        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.backspace"
        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 = { 75e5 ff75f8 ff15???????? 59 57 ff750c ff15???????? }
            // n = 7, score = 100
            //   75e5                 | jne                 0xffffffe7
            //   ff75f8               | push                dword ptr [ebp - 8]
            //   ff15????????         |                     
            //   59                   | pop                 ecx
            //   57                   | push                edi
            //   ff750c               | push                dword ptr [ebp + 0xc]
            //   ff15????????         |                     

        $sequence_1 = { 8d85f4fcffff 50 ff15???????? 5b 5f }
            // n = 5, score = 100
            //   8d85f4fcffff         | lea                 eax, [ebp - 0x30c]
            //   50                   | push                eax
            //   ff15????????         |                     
            //   5b                   | pop                 ebx
            //   5f                   | pop                 edi

        $sequence_2 = { 68f4010000 ff15???????? 56 57 57 ff15???????? e8???????? }
            // n = 7, score = 100
            //   68f4010000           | push                0x1f4
            //   ff15????????         |                     
            //   56                   | push                esi
            //   57                   | push                edi
            //   57                   | push                edi
            //   ff15????????         |                     
            //   e8????????           |                     

        $sequence_3 = { a5 6689841d74faffff 43 a5 43 6a1d }
            // n = 6, score = 100
            //   a5                   | movsd               dword ptr es:[edi], dword ptr [esi]
            //   6689841d74faffff     | mov                 word ptr [ebp + ebx - 0x58c], ax
            //   43                   | inc                 ebx
            //   a5                   | movsd               dword ptr es:[edi], dword ptr [esi]
            //   43                   | inc                 ebx
            //   6a1d                 | push                0x1d

        $sequence_4 = { 83e841 7446 48 7415 48 48 }
            // n = 6, score = 100
            //   83e841               | sub                 eax, 0x41
            //   7446                 | je                  0x48
            //   48                   | dec                 eax
            //   7415                 | je                  0x17
            //   48                   | dec                 eax
            //   48                   | dec                 eax

        $sequence_5 = { 7ca6 6a01 58 5f 5e 5b }
            // n = 6, score = 100
            //   7ca6                 | jl                  0xffffffa8
            //   6a01                 | push                1
            //   58                   | pop                 eax
            //   5f                   | pop                 edi
            //   5e                   | pop                 esi
            //   5b                   | pop                 ebx

        $sequence_6 = { 8d44241c 68???????? 50 bb???????? 8d442424 53 50 }
            // n = 7, score = 100
            //   8d44241c             | lea                 eax, [esp + 0x1c]
            //   68????????           |                     
            //   50                   | push                eax
            //   bb????????           |                     
            //   8d442424             | lea                 eax, [esp + 0x24]
            //   53                   | push                ebx
            //   50                   | push                eax

        $sequence_7 = { 68???????? ff36 ffd7 85c0 742f 85db 740b }
            // n = 7, score = 100
            //   68????????           |                     
            //   ff36                 | push                dword ptr [esi]
            //   ffd7                 | call                edi
            //   85c0                 | test                eax, eax
            //   742f                 | je                  0x31
            //   85db                 | test                ebx, ebx
            //   740b                 | je                  0xd

        $sequence_8 = { eb41 e8???????? eb3a e8???????? }
            // n = 4, score = 100
            //   eb41                 | jmp                 0x43
            //   e8????????           |                     
            //   eb3a                 | jmp                 0x3c
            //   e8????????           |                     

        $sequence_9 = { 59 8bc7 5f 5e c9 c3 833d????????00 }
            // n = 7, score = 100
            //   59                   | pop                 ecx
            //   8bc7                 | mov                 eax, edi
            //   5f                   | pop                 edi
            //   5e                   | pop                 esi
            //   c9                   | leave               
            //   c3                   | ret                 
            //   833d????????00       |                     

    condition:
        7 of them and filesize < 131072
}
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