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 (20201023 | autogenerated rule brought to you by yara-signator)
rule win_slothfulmedia_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.slothfulmedia"
        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 = { 7574 3ad0 0f94c1 49 83e1fb }
            // n = 5, score = 200
            //   7574                 | jne                 0x76
            //   3ad0                 | cmp                 dl, al
            //   0f94c1               | sete                cl
            //   49                   | dec                 ecx
            //   83e1fb               | and                 ecx, 0xfffffffb

        $sequence_1 = { 744d 8b35???????? 8d45f8 50 8d45f4 50 }
            // n = 6, score = 200
            //   744d                 | je                  0x4f
            //   8b35????????         |                     
            //   8d45f8               | lea                 eax, [ebp - 8]
            //   50                   | push                eax
            //   8d45f4               | lea                 eax, [ebp - 0xc]
            //   50                   | push                eax

        $sequence_2 = { 59 8b8e5c040000 898170010000 837e1c01 7532 6a04 }
            // n = 6, score = 200
            //   59                   | pop                 ecx
            //   8b8e5c040000         | mov                 ecx, dword ptr [esi + 0x45c]
            //   898170010000         | mov                 dword ptr [ecx + 0x170], eax
            //   837e1c01             | cmp                 dword ptr [esi + 0x1c], 1
            //   7532                 | jne                 0x34
            //   6a04                 | push                4

        $sequence_3 = { 3bdf 0f8424010000 8d45fc 50 57 }
            // n = 5, score = 200
            //   3bdf                 | cmp                 ebx, edi
            //   0f8424010000         | je                  0x12a
            //   8d45fc               | lea                 eax, [ebp - 4]
            //   50                   | push                eax
            //   57                   | push                edi

        $sequence_4 = { 68c43d7a6b 81c34c040000 50 e8???????? 83c414 }
            // n = 5, score = 200
            //   68c43d7a6b           | push                0x6b7a3dc4
            //   81c34c040000         | add                 ebx, 0x44c
            //   50                   | push                eax
            //   e8????????           |                     
            //   83c414               | add                 esp, 0x14

        $sequence_5 = { e8???????? 83c414 6a10 8d7e08 59 8d75f0 }
            // n = 6, score = 200
            //   e8????????           |                     
            //   83c414               | add                 esp, 0x14
            //   6a10                 | push                0x10
            //   8d7e08               | lea                 edi, [esi + 8]
            //   59                   | pop                 ecx
            //   8d75f0               | lea                 esi, [ebp - 0x10]

        $sequence_6 = { 8d4dfc 51 2bc7 50 8b4508 }
            // n = 5, score = 200
            //   8d4dfc               | lea                 ecx, [ebp - 4]
            //   51                   | push                ecx
            //   2bc7                 | sub                 eax, edi
            //   50                   | push                eax
            //   8b4508               | mov                 eax, dword ptr [ebp + 8]

        $sequence_7 = { 33c0 eb15 8b450c 8d5002 668b08 }
            // n = 5, score = 200
            //   33c0                 | xor                 eax, eax
            //   eb15                 | jmp                 0x17
            //   8b450c               | mov                 eax, dword ptr [ebp + 0xc]
            //   8d5002               | lea                 edx, [eax + 2]
            //   668b08               | mov                 cx, word ptr [eax]

        $sequence_8 = { 33c0 e8???????? 81c40c020000 c21000 3b0d???????? 7502 }
            // n = 6, score = 100
            //   33c0                 | xor                 eax, eax
            //   e8????????           |                     
            //   81c40c020000         | add                 esp, 0x20c
            //   c21000               | ret                 0x10
            //   3b0d????????         |                     
            //   7502                 | jne                 4

        $sequence_9 = { ff15???????? 33c0 6806020000 50 8d4c2412 51 }
            // n = 6, score = 100
            //   ff15????????         |                     
            //   33c0                 | xor                 eax, eax
            //   6806020000           | push                0x206
            //   50                   | push                eax
            //   8d4c2412             | lea                 ecx, [esp + 0x12]
            //   51                   | push                ecx

        $sequence_10 = { e8???????? 83c40c 6a00 ff15???????? 8b35???????? 8b3d???????? 90 }
            // n = 7, score = 100
            //   e8????????           |                     
            //   83c40c               | add                 esp, 0xc
            //   6a00                 | push                0
            //   ff15????????         |                     
            //   8b35????????         |                     
            //   8b3d????????         |                     
            //   90                   | nop                 

        $sequence_11 = { 8d4c2410 51 ff15???????? 8b8c2410020000 }
            // n = 4, score = 100
            //   8d4c2410             | lea                 ecx, [esp + 0x10]
            //   51                   | push                ecx
            //   ff15????????         |                     
            //   8b8c2410020000       | mov                 ecx, dword ptr [esp + 0x210]

        $sequence_12 = { a1???????? 33c4 89842408020000 56 57 68d0070000 ff15???????? }
            // n = 7, score = 100
            //   a1????????           |                     
            //   33c4                 | xor                 eax, esp
            //   89842408020000       | mov                 dword ptr [esp + 0x208], eax
            //   56                   | push                esi
            //   57                   | push                edi
            //   68d0070000           | push                0x7d0
            //   ff15????????         |                     

        $sequence_13 = { 7507 ffd7 83f805 74ee 6804010000 8d54240c 6a00 }
            // n = 7, score = 100
            //   7507                 | jne                 9
            //   ffd7                 | call                edi
            //   83f805               | cmp                 eax, 5
            //   74ee                 | je                  0xfffffff0
            //   6804010000           | push                0x104
            //   8d54240c             | lea                 edx, [esp + 0xc]
            //   6a00                 | push                0

        $sequence_14 = { ff15???????? 6a04 6a00 8d4c2410 51 }
            // n = 5, score = 100
            //   ff15????????         |                     
            //   6a04                 | push                4
            //   6a00                 | push                0
            //   8d4c2410             | lea                 ecx, [esp + 0x10]
            //   51                   | push                ecx

        $sequence_15 = { 68???????? ffd6 85c0 7507 ffd7 83f805 }
            // n = 6, score = 100
            //   68????????           |                     
            //   ffd6                 | call                esi
            //   85c0                 | test                eax, eax
            //   7507                 | jne                 9
            //   ffd7                 | call                edi
            //   83f805               | cmp                 eax, 5

    condition:
        7 of them and filesize < 122880
}
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