SYMBOLCOMMON_NAMEaka. SYNONYMS
win.slothfulmedia (Back to overview)

SlothfulMedia

aka: QueenOfClubs

Actor(s): PowerPool


There is no description at this point.

References
2020-10-15Kaspersky LabsIvan Kwiatkowski, Pierre Delcher, Félix Aime
@online{kwiatkowski:20201015:iamtheking:1c3917e, author = {Ivan Kwiatkowski and Pierre Delcher and Félix Aime}, title = {{IAmTheKing and the SlothfulMedia malware family}}, date = {2020-10-15}, organization = {Kaspersky Labs}, url = {https://securelist.com/iamtheking-and-the-slothfulmedia-malware-family/99000/}, language = {English}, urldate = {2020-10-16} } IAmTheKing and the SlothfulMedia malware family
SlothfulMedia
2020-10-01US-CERTUS-CERT
@online{uscert:20201001:malware:819220c, author = {US-CERT}, title = {{Malware Analysis Report (AR20-275A): Remote Access Trojan: SLOTHFULMEDIA}}, date = {2020-10-01}, organization = {US-CERT}, url = {https://us-cert.cisa.gov/ncas/analysis-reports/ar20-275a}, language = {English}, urldate = {2020-10-04} } Malware Analysis Report (AR20-275A): Remote Access Trojan: SLOTHFULMEDIA
SlothfulMedia
Yara Rules
[TLP:WHITE] win_slothfulmedia_auto (20201014 | autogenerated rule brought to you by yara-signator)
rule win_slothfulmedia_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2020-10-14"
        version = "1"
        description = "autogenerated rule brought to you by yara-signator"
        tool = "yara-signator v0.5.0"
        tool_config = "callsandjumps;datarefs;binvalue"
        malpedia_reference = "https://malpedia.caad.fkie.fraunhofer.de/details/win.slothfulmedia"
        malpedia_rule_date = "20201014"
        malpedia_hash = "a7e3bd57eaf12bf3ea29a863c041091ba3af9ac9"
        malpedia_version = "20201014"
        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 = { ffb35c040000 e8???????? 8b835c040000 68???????? 0564010000 }
            // n = 5, score = 100
            //   ffb35c040000         | push                dword ptr [ebx + 0x45c]
            //   e8????????           |                     
            //   8b835c040000         | mov                 eax, dword ptr [ebx + 0x45c]
            //   68????????           |                     
            //   0564010000           | add                 eax, 0x164

        $sequence_1 = { ff15???????? 33c0 6806020000 50 8d4c2412 51 6689442414 }
            // n = 7, score = 100
            //   ff15????????         |                     
            //   33c0                 | xor                 eax, eax
            //   6806020000           | push                0x206
            //   50                   | push                eax
            //   8d4c2412             | lea                 ecx, [esp + 0x12]
            //   51                   | push                ecx
            //   6689442414           | mov                 word ptr [esp + 0x14], ax

        $sequence_2 = { 33c4 89842408020000 56 57 68d0070000 }
            // n = 5, score = 100
            //   33c4                 | xor                 eax, esp
            //   89842408020000       | mov                 dword ptr [esp + 0x208], eax
            //   56                   | push                esi
            //   57                   | push                edi
            //   68d0070000           | push                0x7d0

        $sequence_3 = { 90 68???????? ffd6 85c0 }
            // n = 4, score = 100
            //   90                   | nop                 
            //   68????????           |                     
            //   ffd6                 | call                esi
            //   85c0                 | test                eax, eax

        $sequence_4 = { e8???????? 83c40c 6804010000 8d44240c 50 6a00 ff15???????? }
            // n = 7, score = 100
            //   e8????????           |                     
            //   83c40c               | add                 esp, 0xc
            //   6804010000           | push                0x104
            //   8d44240c             | lea                 eax, [esp + 0xc]
            //   50                   | push                eax
            //   6a00                 | push                0
            //   ff15????????         |                     

        $sequence_5 = { 6bf64c 037510 8d7dd0 a5 a5 a5 8d45e8 }
            // n = 7, score = 100
            //   6bf64c               | imul                esi, esi, 0x4c
            //   037510               | add                 esi, dword ptr [ebp + 0x10]
            //   8d7dd0               | lea                 edi, [ebp - 0x30]
            //   a5                   | movsd               dword ptr es:[edi], dword ptr [esi]
            //   a5                   | movsd               dword ptr es:[edi], dword ptr [esi]
            //   a5                   | movsd               dword ptr es:[edi], dword ptr [esi]
            //   8d45e8               | lea                 eax, [ebp - 0x18]

        $sequence_6 = { 8bc3 5b e9???????? 83bb500e000000 742c 5f 5e }
            // n = 7, score = 100
            //   8bc3                 | mov                 eax, ebx
            //   5b                   | pop                 ebx
            //   e9????????           |                     
            //   83bb500e000000       | cmp                 dword ptr [ebx + 0xe50], 0
            //   742c                 | je                  0x2e
            //   5f                   | pop                 edi
            //   5e                   | pop                 esi

        $sequence_7 = { 8d4c2412 51 6689442414 e8???????? 83c40c 6a00 }
            // n = 6, score = 100
            //   8d4c2412             | lea                 ecx, [esp + 0x12]
            //   51                   | push                ecx
            //   6689442414           | mov                 word ptr [esp + 0x14], ax
            //   e8????????           |                     
            //   83c40c               | add                 esp, 0xc
            //   6a00                 | push                0

        $sequence_8 = { e8???????? 56 ff15???????? 5e c3 b8???????? e8???????? }
            // n = 7, score = 100
            //   e8????????           |                     
            //   56                   | push                esi
            //   ff15????????         |                     
            //   5e                   | pop                 esi
            //   c3                   | ret                 
            //   b8????????           |                     
            //   e8????????           |                     

        $sequence_9 = { 7621 57 8b4508 8d0c06 33d2 8bc6 }
            // n = 6, score = 100
            //   7621                 | jbe                 0x23
            //   57                   | push                edi
            //   8b4508               | mov                 eax, dword ptr [ebp + 8]
            //   8d0c06               | lea                 ecx, [esi + eax]
            //   33d2                 | xor                 edx, edx
            //   8bc6                 | mov                 eax, esi

        $sequence_10 = { ff750c ff15???????? 50 8d45c8 50 e8???????? 8bf0 }
            // n = 7, score = 100
            //   ff750c               | push                dword ptr [ebp + 0xc]
            //   ff15????????         |                     
            //   50                   | push                eax
            //   8d45c8               | lea                 eax, [ebp - 0x38]
            //   50                   | push                eax
            //   e8????????           |                     
            //   8bf0                 | mov                 esi, eax

        $sequence_11 = { 6880000000 ff15???????? 8b45f4 8b0485ecb34000 56 56 }
            // n = 6, score = 100
            //   6880000000           | push                0x80
            //   ff15????????         |                     
            //   8b45f4               | mov                 eax, dword ptr [ebp - 0xc]
            //   8b0485ecb34000       | mov                 eax, dword ptr [eax*4 + 0x40b3ec]
            //   56                   | push                esi
            //   56                   | push                esi

        $sequence_12 = { 8d4c2410 51 ff15???????? 8b8c2410020000 5f 5e 33cc }
            // n = 7, score = 100
            //   8d4c2410             | lea                 ecx, [esp + 0x10]
            //   51                   | push                ecx
            //   ff15????????         |                     
            //   8b8c2410020000       | mov                 ecx, dword ptr [esp + 0x210]
            //   5f                   | pop                 edi
            //   5e                   | pop                 esi
            //   33cc                 | xor                 ecx, esp

        $sequence_13 = { 56 89442424 ff15???????? 8b4c241c 6a01 56 50 }
            // n = 7, score = 100
            //   56                   | push                esi
            //   89442424             | mov                 dword ptr [esp + 0x24], eax
            //   ff15????????         |                     
            //   8b4c241c             | mov                 ecx, dword ptr [esp + 0x1c]
            //   6a01                 | push                1
            //   56                   | push                esi
            //   50                   | push                eax

        $sequence_14 = { e8???????? 81c40c020000 c21000 3b0d???????? }
            // n = 4, score = 100
            //   e8????????           |                     
            //   81c40c020000         | add                 esp, 0x20c
            //   c21000               | ret                 0x10
            //   3b0d????????         |                     

    condition:
        7 of them and filesize < 122880
}
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