SYMBOLCOMMON_NAMEaka. SYNONYMS
win.satana (Back to overview)

Satana


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References
2020-06-05ReversingLabsRobert Simmons
@online{simmons:20200605:retread:86b93a6, author = {Robert Simmons}, title = {{Retread Ransomware: Identifying Satana to Understand "CoronaVirus"}}, date = {2020-06-05}, organization = {ReversingLabs}, url = {https://blog.reversinglabs.com/blog/retread-ransomware}, language = {English}, urldate = {2020-06-11} } Retread Ransomware: Identifying Satana to Understand "CoronaVirus"
Satana
2017-02-06CylanceCylance Threat Research Team
@online{team:20170206:threat:6ebbaae, author = {Cylance Threat Research Team}, title = {{Threat Spotlight: Satan}}, date = {2017-02-06}, organization = {Cylance}, url = {https://www.cylance.com/threat-spotlight-satan-raas}, language = {English}, urldate = {2019-07-11} } Threat Spotlight: Satan
Satana
Yara Rules
[TLP:WHITE] win_satana_auto (20201023 | autogenerated rule brought to you by yara-signator)
rule win_satana_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2020-12-22"
        version = "1"
        description = "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.satana"
        malpedia_rule_date = "20201222"
        malpedia_hash = "30354d830a29f0fbd3714d93d94dea941d77a130"
        malpedia_version = "20201023"
        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 = { 83c40c 660fd645f0 660fefc0 68???????? 884df8 660fd645c0 660fd645c8 }
            // n = 7, score = 100
            //   83c40c               | add                 esp, 0xc
            //   660fd645f0           | movq                qword ptr [ebp - 0x10], xmm0
            //   660fefc0             | pxor                xmm0, xmm0
            //   68????????           |                     
            //   884df8               | mov                 byte ptr [ebp - 8], cl
            //   660fd645c0           | movq                qword ptr [ebp - 0x40], xmm0
            //   660fd645c8           | movq                qword ptr [ebp - 0x38], xmm0

        $sequence_1 = { 83e10f 0fb64c0de8 8848fe 0fb64c35ad }
            // n = 4, score = 100
            //   83e10f               | and                 ecx, 0xf
            //   0fb64c0de8           | movzx               ecx, byte ptr [ebp + ecx - 0x18]
            //   8848fe               | mov                 byte ptr [eax - 2], cl
            //   0fb64c35ad           | movzx               ecx, byte ptr [ebp + esi - 0x53]

        $sequence_2 = { 8d8530ffffff 6a00 50 e8???????? 6a74 8d8d78ffffff 6a00 }
            // n = 7, score = 100
            //   8d8530ffffff         | lea                 eax, [ebp - 0xd0]
            //   6a00                 | push                0
            //   50                   | push                eax
            //   e8????????           |                     
            //   6a74                 | push                0x74
            //   8d8d78ffffff         | lea                 ecx, [ebp - 0x88]
            //   6a00                 | push                0

        $sequence_3 = { 5f 80895df000895d fc 895df8 }
            // n = 4, score = 100
            //   5f                   | pop                 edi
            //   80895df000895d       | or                  byte ptr [ecx - 0x76ff0fa3], 0x5d
            //   fc                   | cld                 
            //   895df8               | mov                 dword ptr [ebp - 8], ebx

        $sequence_4 = { 750f 47 8984bd6cffffff 83ff0f 7330 eb15 6a44 }
            // n = 7, score = 100
            //   750f                 | jne                 0x11
            //   47                   | inc                 edi
            //   8984bd6cffffff       | mov                 dword ptr [ebp + edi*4 - 0x94], eax
            //   83ff0f               | cmp                 edi, 0xf
            //   7330                 | jae                 0x32
            //   eb15                 | jmp                 0x17
            //   6a44                 | push                0x44

        $sequence_5 = { c645fd00 84db 7426 0fb6d3 0fb682581e4100 0fb615???????? 03c2 }
            // n = 7, score = 100
            //   c645fd00             | mov                 byte ptr [ebp - 3], 0
            //   84db                 | test                bl, bl
            //   7426                 | je                  0x28
            //   0fb6d3               | movzx               edx, bl
            //   0fb682581e4100       | movzx               eax, byte ptr [edx + 0x411e58]
            //   0fb615????????       |                     
            //   03c2                 | add                 eax, edx

        $sequence_6 = { 8d45dc 50 57 ff15???????? 8b75dc 8975bc }
            // n = 6, score = 100
            //   8d45dc               | lea                 eax, [ebp - 0x24]
            //   50                   | push                eax
            //   57                   | push                edi
            //   ff15????????         |                     
            //   8b75dc               | mov                 esi, dword ptr [ebp - 0x24]
            //   8975bc               | mov                 dword ptr [ebp - 0x44], esi

        $sequence_7 = { 6a04 8d44240c 50 6a07 ff15???????? }
            // n = 5, score = 100
            //   6a04                 | push                4
            //   8d44240c             | lea                 eax, [esp + 0xc]
            //   50                   | push                eax
            //   6a07                 | push                7
            //   ff15????????         |                     

        $sequence_8 = { ffd6 8b4dec 8b15???????? 51 6a08 52 }
            // n = 6, score = 100
            //   ffd6                 | call                esi
            //   8b4dec               | mov                 ecx, dword ptr [ebp - 0x14]
            //   8b15????????         |                     
            //   51                   | push                ecx
            //   6a08                 | push                8
            //   52                   | push                edx

        $sequence_9 = { 6a00 50 c745c43c000000 e8???????? 83c40c }
            // n = 5, score = 100
            //   6a00                 | push                0
            //   50                   | push                eax
            //   c745c43c000000       | mov                 dword ptr [ebp - 0x3c], 0x3c
            //   e8????????           |                     
            //   83c40c               | add                 esp, 0xc

    condition:
        7 of them and filesize < 221184
}
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