SYMBOLCOMMON_NAMEaka. SYNONYMS
win.electric_powder (Back to overview)

ElectricPowder


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References
2017-03-14ClearSkyClearSky Research Team
@online{team:20170314:operation:40270ec, author = {ClearSky Research Team}, title = {{Operation Electric Powder – Who is targeting Israel Electric Company?}}, date = {2017-03-14}, organization = {ClearSky}, url = {https://www.clearskysec.com/iec/}, language = {English}, urldate = {2019-11-23} } Operation Electric Powder – Who is targeting Israel Electric Company?
ElectricPowder
Yara Rules
[TLP:WHITE] win_electric_powder_auto (20220411 | Detects win.electric_powder.)
rule win_electric_powder_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2022-04-08"
        version = "1"
        description = "Detects win.electric_powder."
        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.electric_powder"
        malpedia_rule_date = "20220405"
        malpedia_hash = "ecd38294bd47d5589be5cd5490dc8bb4804afc2a"
        malpedia_version = "20220411"
        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 = { 8b4508 8bd1 8955e8 57 85c0 0f843d060000 8b7d0c }
            // n = 7, score = 100
            //   8b4508               | mov                 eax, dword ptr [ebp + 8]
            //   8bd1                 | mov                 edx, ecx
            //   8955e8               | mov                 dword ptr [ebp - 0x18], edx
            //   57                   | push                edi
            //   85c0                 | test                eax, eax
            //   0f843d060000         | je                  0x643
            //   8b7d0c               | mov                 edi, dword ptr [ebp + 0xc]

        $sequence_1 = { 83c102 6685c0 75f5 2b8d38efffff d1f9 3b4a14 7740 }
            // n = 7, score = 100
            //   83c102               | add                 ecx, 2
            //   6685c0               | test                ax, ax
            //   75f5                 | jne                 0xfffffff7
            //   2b8d38efffff         | sub                 ecx, dword ptr [ebp - 0x10c8]
            //   d1f9                 | sar                 ecx, 1
            //   3b4a14               | cmp                 ecx, dword ptr [edx + 0x14]
            //   7740                 | ja                  0x42

        $sequence_2 = { c746140f000000 c60600 8d8d30fcffff e8???????? 8d8520fdffff ba???????? 50 }
            // n = 7, score = 100
            //   c746140f000000       | mov                 dword ptr [esi + 0x14], 0xf
            //   c60600               | mov                 byte ptr [esi], 0
            //   8d8d30fcffff         | lea                 ecx, dword ptr [ebp - 0x3d0]
            //   e8????????           |                     
            //   8d8520fdffff         | lea                 eax, dword ptr [ebp - 0x2e0]
            //   ba????????           |                     
            //   50                   | push                eax

        $sequence_3 = { 8be5 5d c3 8bca ff55d8 }
            // n = 5, score = 100
            //   8be5                 | mov                 esp, ebp
            //   5d                   | pop                 ebp
            //   c3                   | ret                 
            //   8bca                 | mov                 ecx, edx
            //   ff55d8               | call                dword ptr [ebp - 0x28]

        $sequence_4 = { 8b49fc 3bc8 0f835f010000 2bc1 83f804 0f8254010000 }
            // n = 6, score = 100
            //   8b49fc               | mov                 ecx, dword ptr [ecx - 4]
            //   3bc8                 | cmp                 ecx, eax
            //   0f835f010000         | jae                 0x165
            //   2bc1                 | sub                 eax, ecx
            //   83f804               | cmp                 eax, 4
            //   0f8254010000         | jb                  0x15a

        $sequence_5 = { 83f910 7311 0f1000 be0f000000 0f1185d8fcffff eb45 }
            // n = 6, score = 100
            //   83f910               | cmp                 ecx, 0x10
            //   7311                 | jae                 0x13
            //   0f1000               | movups              xmm0, xmmword ptr [eax]
            //   be0f000000           | mov                 esi, 0xf
            //   0f1185d8fcffff       | movups              xmmword ptr [ebp - 0x328], xmm0
            //   eb45                 | jmp                 0x47

        $sequence_6 = { 837a1410 7202 8b12 3bc8 7726 8d040e 894710 }
            // n = 7, score = 100
            //   837a1410             | cmp                 dword ptr [edx + 0x14], 0x10
            //   7202                 | jb                  4
            //   8b12                 | mov                 edx, dword ptr [edx]
            //   3bc8                 | cmp                 ecx, eax
            //   7726                 | ja                  0x28
            //   8d040e               | lea                 eax, dword ptr [esi + ecx]
            //   894710               | mov                 dword ptr [edi + 0x10], eax

        $sequence_7 = { 8b4c0838 8b4120 833800 741b 8b5130 8b02 85c0 }
            // n = 7, score = 100
            //   8b4c0838             | mov                 ecx, dword ptr [eax + ecx + 0x38]
            //   8b4120               | mov                 eax, dword ptr [ecx + 0x20]
            //   833800               | cmp                 dword ptr [eax], 0
            //   741b                 | je                  0x1d
            //   8b5130               | mov                 edx, dword ptr [ecx + 0x30]
            //   8b02                 | mov                 eax, dword ptr [edx]
            //   85c0                 | test                eax, eax

        $sequence_8 = { 8b4508 a81f 7513 8b50fc 3bd0 730c 2bc2 }
            // n = 7, score = 100
            //   8b4508               | mov                 eax, dword ptr [ebp + 8]
            //   a81f                 | test                al, 0x1f
            //   7513                 | jne                 0x15
            //   8b50fc               | mov                 edx, dword ptr [eax - 4]
            //   3bd0                 | cmp                 edx, eax
            //   730c                 | jae                 0xe
            //   2bc2                 | sub                 eax, edx

        $sequence_9 = { 85db 7507 c74634041f4300 6a00 57 8bce e8???????? }
            // n = 7, score = 100
            //   85db                 | test                ebx, ebx
            //   7507                 | jne                 9
            //   c74634041f4300       | mov                 dword ptr [esi + 0x34], 0x431f04
            //   6a00                 | push                0
            //   57                   | push                edi
            //   8bce                 | mov                 ecx, esi
            //   e8????????           |                     

    condition:
        7 of them and filesize < 565248
}
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