SYMBOLCOMMON_NAMEaka. SYNONYMS
win.solarbot (Back to overview)

Solarbot

aka: Napolar

There is no description at this point.

References
2013-09-26MalwarebytesJoshua Cannell
@online{cannell:20130926:new:428977b, author = {Joshua Cannell}, title = {{New Solarbot Malware Debuts, Creator Publicly Advertising}}, date = {2013-09-26}, organization = {Malwarebytes}, url = {https://blog.malwarebytes.com/threat-analysis/2013/09/new-solarbot-malware-debuts-creator-publicly-advertising/}, language = {English}, urldate = {2019-12-20} } New Solarbot Malware Debuts, Creator Publicly Advertising
Solarbot
2013-09-25AvastPeter Kálnai
@online{klnai:20130925:win3264napolar:4f16ddc, author = {Peter Kálnai}, title = {{Win32/64:Napolar: New Trojan shines on the cyber crime-scene}}, date = {2013-09-25}, organization = {Avast}, url = {https://blog.avast.com/2013/09/25/win3264napolar-new-trojan-shines-on-the-cyber-crime-scene/}, language = {English}, urldate = {2020-02-26} } Win32/64:Napolar: New Trojan shines on the cyber crime-scene
Solarbot
2013-09-25ESET ResearchPierre-Marc Bureau
@online{bureau:20130925:win32napolar:aba54b1, author = {Pierre-Marc Bureau}, title = {{Win32/Napolar – A new bot on the block}}, date = {2013-09-25}, organization = {ESET Research}, url = {https://www.welivesecurity.com/2013/09/25/win32napolar-a-new-bot-on-the-block/}, language = {English}, urldate = {2019-11-14} } Win32/Napolar – A new bot on the block
Solarbot
Yara Rules
[TLP:WHITE] win_solarbot_auto (20200529 | autogenerated rule brought to you by yara-signator)
rule win_solarbot_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.solarbot"
        malpedia_rule_date = "20200529"
        malpedia_hash = "92c362319514e5a6da26204961446caa3a8b32a8"
        malpedia_version = "20200529"
        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 / 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 = { 7406 8b45e0 8945c8 ff75e4 6aff 8b55d0 }
            // n = 6, score = 300
            //   7406                 | je                  8
            //   8b45e0               | mov                 eax, dword ptr [ebp - 0x20]
            //   8945c8               | mov                 dword ptr [ebp - 0x38], eax
            //   ff75e4               | push                dword ptr [ebp - 0x1c]
            //   6aff                 | push                -1
            //   8b55d0               | mov                 edx, dword ptr [ebp - 0x30]

        $sequence_1 = { 895df4 8975f8 8b5d08 c745fc00000000 8d45fc }
            // n = 5, score = 300
            //   895df4               | mov                 dword ptr [ebp - 0xc], ebx
            //   8975f8               | mov                 dword ptr [ebp - 8], esi
            //   8b5d08               | mov                 ebx, dword ptr [ebp + 8]
            //   c745fc00000000       | mov                 dword ptr [ebp - 4], 0
            //   8d45fc               | lea                 eax, [ebp - 4]

        $sequence_2 = { 8b85e0fdffff 0385d0fdffff 8b583c 83bdccfdffff02 7532 8b85e0fdffff 0385d0fdffff }
            // n = 7, score = 300
            //   8b85e0fdffff         | mov                 eax, dword ptr [ebp - 0x220]
            //   0385d0fdffff         | add                 eax, dword ptr [ebp - 0x230]
            //   8b583c               | mov                 ebx, dword ptr [eax + 0x3c]
            //   83bdccfdffff02       | cmp                 dword ptr [ebp - 0x234], 2
            //   7532                 | jne                 0x34
            //   8b85e0fdffff         | mov                 eax, dword ptr [ebp - 0x220]
            //   0385d0fdffff         | add                 eax, dword ptr [ebp - 0x230]

        $sequence_3 = { ffd2 8b9d00f9ffff 8bb504f9ffff 8bbd08f9ffff }
            // n = 4, score = 300
            //   ffd2                 | call                edx
            //   8b9d00f9ffff         | mov                 ebx, dword ptr [ebp - 0x700]
            //   8bb504f9ffff         | mov                 esi, dword ptr [ebp - 0x6fc]
            //   8bbd08f9ffff         | mov                 edi, dword ptr [ebp - 0x6f8]

        $sequence_4 = { 8b7d0c 8b7510 b300 8d45f8 50 6a08 52 }
            // n = 7, score = 300
            //   8b7d0c               | mov                 edi, dword ptr [ebp + 0xc]
            //   8b7510               | mov                 esi, dword ptr [ebp + 0x10]
            //   b300                 | mov                 bl, 0
            //   8d45f8               | lea                 eax, [ebp - 8]
            //   50                   | push                eax
            //   6a08                 | push                8
            //   52                   | push                edx

        $sequence_5 = { 8b4508 8945cc 8b7d0c 8b4510 8b5514 c745c800000000 c745e400000000 }
            // n = 7, score = 300
            //   8b4508               | mov                 eax, dword ptr [ebp + 8]
            //   8945cc               | mov                 dword ptr [ebp - 0x34], eax
            //   8b7d0c               | mov                 edi, dword ptr [ebp + 0xc]
            //   8b4510               | mov                 eax, dword ptr [ebp + 0x10]
            //   8b5514               | mov                 edx, dword ptr [ebp + 0x14]
            //   c745c800000000       | mov                 dword ptr [ebp - 0x38], 0
            //   c745e400000000       | mov                 dword ptr [ebp - 0x1c], 0

        $sequence_6 = { 6a06 8d45f4 50 89f8 50 89f0 50 }
            // n = 7, score = 300
            //   6a06                 | push                6
            //   8d45f4               | lea                 eax, [ebp - 0xc]
            //   50                   | push                eax
            //   89f8                 | mov                 eax, edi
            //   50                   | push                eax
            //   89f0                 | mov                 eax, esi
            //   50                   | push                eax

        $sequence_7 = { 8d85ecfbffff 50 57 e8???????? 84c0 7459 ffb5ecfbffff }
            // n = 7, score = 300
            //   8d85ecfbffff         | lea                 eax, [ebp - 0x414]
            //   50                   | push                eax
            //   57                   | push                edi
            //   e8????????           |                     
            //   84c0                 | test                al, al
            //   7459                 | je                  0x5b
            //   ffb5ecfbffff         | push                dword ptr [ebp - 0x414]

        $sequence_8 = { ffd2 89c3 85c0 7549 8975fc c745e800000000 c745ec00000000 }
            // n = 7, score = 300
            //   ffd2                 | call                edx
            //   89c3                 | mov                 ebx, eax
            //   85c0                 | test                eax, eax
            //   7549                 | jne                 0x4b
            //   8975fc               | mov                 dword ptr [ebp - 4], esi
            //   c745e800000000       | mov                 dword ptr [ebp - 0x18], 0
            //   c745ec00000000       | mov                 dword ptr [ebp - 0x14], 0

        $sequence_9 = { 8975f4 897df8 8b7508 8b7d0c }
            // n = 4, score = 300
            //   8975f4               | mov                 dword ptr [ebp - 0xc], esi
            //   897df8               | mov                 dword ptr [ebp - 8], edi
            //   8b7508               | mov                 esi, dword ptr [ebp + 8]
            //   8b7d0c               | mov                 edi, dword ptr [ebp + 0xc]

    condition:
        7 of them and filesize < 204800
}
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