Actor(s): Equation Group
There is no description at this point.
rule win_darkpulsar_auto { meta: author = "Felix Bilstein - yara-signator at cocacoding dot com" date = "2023-01-25" version = "1" description = "Detects win.darkpulsar." 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.darkpulsar" malpedia_rule_date = "20230124" malpedia_hash = "2ee0eebba83dce3d019a90519f2f972c0fcf9686" malpedia_version = "20230125" 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 = { ff25???????? ff25???????? ff25???????? 33c0 40 c20c00 68???????? } // n = 7, score = 600 // ff25???????? | // ff25???????? | // ff25???????? | // 33c0 | xor eax, eax // 40 | inc eax // c20c00 | ret 0xc // 68???????? | $sequence_1 = { c20c00 68???????? 64ff3500000000 8b442410 896c2410 8d6c2410 } // n = 6, score = 600 // c20c00 | ret 0xc // 68???????? | // 64ff3500000000 | push dword ptr fs:[0] // 8b442410 | mov eax, dword ptr [esp + 0x10] // 896c2410 | mov dword ptr [esp + 0x10], ebp // 8d6c2410 | lea ebp, [esp + 0x10] $sequence_2 = { 3a01 1bc0 83e0fe 40 5f 5e } // n = 6, score = 400 // 3a01 | cmp al, byte ptr [ecx] // 1bc0 | sbb eax, eax // 83e0fe | and eax, 0xfffffffe // 40 | inc eax // 5f | pop edi // 5e | pop esi $sequence_3 = { 803f00 742e 47 ff450c 0fbe07 } // n = 5, score = 300 // 803f00 | cmp byte ptr [edi], 0 // 742e | je 0x30 // 47 | inc edi // ff450c | inc dword ptr [ebp + 0xc] // 0fbe07 | movsx eax, byte ptr [edi] $sequence_4 = { 8b35???????? 57 8b7d08 eb09 803f00 } // n = 5, score = 300 // 8b35???????? | // 57 | push edi // 8b7d08 | mov edi, dword ptr [ebp + 8] // eb09 | jmp 0xb // 803f00 | cmp byte ptr [edi], 0 $sequence_5 = { 74e0 0fb607 8b4d0c 3a01 } // n = 4, score = 300 // 74e0 | je 0xffffffe2 // 0fb607 | movzx eax, byte ptr [edi] // 8b4d0c | mov ecx, dword ptr [ebp + 0xc] // 3a01 | cmp al, byte ptr [ecx] $sequence_6 = { 50 ffd6 59 59 3bd8 74e0 } // n = 6, score = 300 // 50 | push eax // ffd6 | call esi // 59 | pop ecx // 59 | pop ecx // 3bd8 | cmp ebx, eax // 74e0 | je 0xffffffe2 $sequence_7 = { ff450c 0fbe07 50 ffd6 } // n = 4, score = 300 // ff450c | inc dword ptr [ebp + 0xc] // 0fbe07 | movsx eax, byte ptr [edi] // 50 | push eax // ffd6 | call esi $sequence_8 = { ff75f4 e8???????? 59 59 83f8ff } // n = 5, score = 200 // ff75f4 | push dword ptr [ebp - 0xc] // e8???????? | // 59 | pop ecx // 59 | pop ecx // 83f8ff | cmp eax, -1 $sequence_9 = { 8d4601 6a01 50 ff15???????? 8bf8 } // n = 5, score = 200 // 8d4601 | lea eax, [esi + 1] // 6a01 | push 1 // 50 | push eax // ff15???????? | // 8bf8 | mov edi, eax $sequence_10 = { 33c9 83c410 83f8ff 0f95c1 49 } // n = 5, score = 200 // 33c9 | xor ecx, ecx // 83c410 | add esp, 0x10 // 83f8ff | cmp eax, -1 // 0f95c1 | setne cl // 49 | dec ecx $sequence_11 = { 8945fc 8b450c 53 8b5d08 56 57 8945e8 } // n = 7, score = 200 // 8945fc | mov dword ptr [ebp - 4], eax // 8b450c | mov eax, dword ptr [ebp + 0xc] // 53 | push ebx // 8b5d08 | mov ebx, dword ptr [ebp + 8] // 56 | push esi // 57 | push edi // 8945e8 | mov dword ptr [ebp - 0x18], eax $sequence_12 = { 33d2 c3 8bff 55 8bec b863736de0 394508 } // n = 7, score = 200 // 33d2 | xor edx, edx // c3 | ret // 8bff | mov edi, edi // 55 | push ebp // 8bec | mov ebp, esp // b863736de0 | mov eax, 0xe06d7363 // 394508 | cmp dword ptr [ebp + 8], eax $sequence_13 = { 8bc1 c3 8b442404 85c0 7501 c3 } // n = 6, score = 200 // 8bc1 | mov eax, ecx // c3 | ret // 8b442404 | mov eax, dword ptr [esp + 4] // 85c0 | test eax, eax // 7501 | jne 3 // c3 | ret $sequence_14 = { 8d45cc 50 57 e8???????? 83c410 85c0 } // n = 6, score = 200 // 8d45cc | lea eax, [ebp - 0x34] // 50 | push eax // 57 | push edi // e8???????? | // 83c410 | add esp, 0x10 // 85c0 | test eax, eax $sequence_15 = { e8???????? ff7514 89460c e8???????? } // n = 4, score = 200 // e8???????? | // ff7514 | push dword ptr [ebp + 0x14] // 89460c | mov dword ptr [esi + 0xc], eax // e8???????? | $sequence_16 = { 5f 5e c3 8b442404 85c0 7503 } // n = 6, score = 200 // 5f | pop edi // 5e | pop esi // c3 | ret // 8b442404 | mov eax, dword ptr [esp + 4] // 85c0 | test eax, eax // 7503 | jne 5 $sequence_17 = { 8b5d10 56 8b7508 33d2 } // n = 4, score = 200 // 8b5d10 | mov ebx, dword ptr [ebp + 0x10] // 56 | push esi // 8b7508 | mov esi, dword ptr [ebp + 8] // 33d2 | xor edx, edx $sequence_18 = { 8bf0 46 56 ff15???????? 59 } // n = 5, score = 200 // 8bf0 | mov esi, eax // 46 | inc esi // 56 | push esi // ff15???????? | // 59 | pop ecx $sequence_19 = { 50 ff7618 ff15???????? 59 59 85c0 } // n = 6, score = 200 // 50 | push eax // ff7618 | push dword ptr [esi + 0x18] // ff15???????? | // 59 | pop ecx // 59 | pop ecx // 85c0 | test eax, eax $sequence_20 = { 33c0 eb03 83c8ff 5f 5e c3 56 } // n = 7, score = 200 // 33c0 | xor eax, eax // eb03 | jmp 5 // 83c8ff | or eax, 0xffffffff // 5f | pop edi // 5e | pop esi // c3 | ret // 56 | push esi $sequence_21 = { e8???????? 59 5e 83f8ff } // n = 4, score = 200 // e8???????? | // 59 | pop ecx // 5e | pop esi // 83f8ff | cmp eax, -1 $sequence_22 = { 6a01 ff15???????? 8bf0 59 59 3bf7 } // n = 6, score = 200 // 6a01 | push 1 // ff15???????? | // 8bf0 | mov esi, eax // 59 | pop ecx // 59 | pop ecx // 3bf7 | cmp esi, edi $sequence_23 = { 8bd8 53 e8???????? 83c410 85c0 750c } // n = 6, score = 200 // 8bd8 | mov ebx, eax // 53 | push ebx // e8???????? | // 83c410 | add esp, 0x10 // 85c0 | test eax, eax // 750c | jne 0xe $sequence_24 = { 56 e8???????? ff742414 50 } // n = 4, score = 200 // 56 | push esi // e8???????? | // ff742414 | push dword ptr [esp + 0x14] // 50 | push eax $sequence_25 = { ffd7 59 5f 5e c3 8b4c2404 } // n = 6, score = 200 // ffd7 | call edi // 59 | pop ecx // 5f | pop edi // 5e | pop esi // c3 | ret // 8b4c2404 | mov ecx, dword ptr [esp + 4] $sequence_26 = { 33d2 56 57 33c0 } // n = 4, score = 200 // 33d2 | xor edx, edx // 56 | push esi // 57 | push edi // 33c0 | xor eax, eax $sequence_27 = { ff7608 ff36 e8???????? 8bf8 } // n = 4, score = 200 // ff7608 | push dword ptr [esi + 8] // ff36 | push dword ptr [esi] // e8???????? | // 8bf8 | mov edi, eax $sequence_28 = { f7d8 59 1bc0 59 40 c3 e9???????? } // n = 7, score = 200 // f7d8 | neg eax // 59 | pop ecx // 1bc0 | sbb eax, eax // 59 | pop ecx // 40 | inc eax // c3 | ret // e9???????? | $sequence_29 = { 83c708 4e 83ff40 7ce8 5f 5e 8bd5 } // n = 7, score = 100 // 83c708 | add edi, 8 // 4e | dec esi // 83ff40 | cmp edi, 0x40 // 7ce8 | jl 0xffffffea // 5f | pop edi // 5e | pop esi // 8bd5 | mov edx, ebp $sequence_30 = { 8985d8feffff ff15???????? 83f8ff 7446 8d85d8feffff 50 57 } // n = 7, score = 100 // 8985d8feffff | mov dword ptr [ebp - 0x128], eax // ff15???????? | // 83f8ff | cmp eax, -1 // 7446 | je 0x48 // 8d85d8feffff | lea eax, [ebp - 0x128] // 50 | push eax // 57 | push edi $sequence_31 = { 00db 73e1 7511 3b742404 } // n = 4, score = 100 // 00db | add bl, bl // 73e1 | jae 0xffffffe3 // 7511 | jne 0x13 // 3b742404 | cmp esi, dword ptr [esp + 4] $sequence_32 = { 00db 7313 75e1 3b742404 0f8318010000 } // n = 5, score = 100 // 00db | add bl, bl // 7313 | jae 0x15 // 75e1 | jne 0xffffffe3 // 3b742404 | cmp esi, dword ptr [esp + 4] // 0f8318010000 | jae 0x11e $sequence_33 = { 85c0 741b 8b4e74 8b561c 51 8b4df8 52 } // n = 7, score = 100 // 85c0 | test eax, eax // 741b | je 0x1d // 8b4e74 | mov ecx, dword ptr [esi + 0x74] // 8b561c | mov edx, dword ptr [esi + 0x1c] // 51 | push ecx // 8b4df8 | mov ecx, dword ptr [ebp - 8] // 52 | push edx $sequence_34 = { 33db 6803010000 898d64eeffff 898548eeffff } // n = 4, score = 100 // 33db | xor ebx, ebx // 6803010000 | push 0x103 // 898d64eeffff | mov dword ptr [ebp - 0x119c], ecx // 898548eeffff | mov dword ptr [ebp - 0x11b8], eax $sequence_35 = { 00db 7309 75f4 8a1e 46 10db } // n = 6, score = 100 // 00db | add bl, bl // 7309 | jae 0xb // 75f4 | jne 0xfffffff6 // 8a1e | mov bl, byte ptr [esi] // 46 | inc esi // 10db | adc bl, bl $sequence_36 = { ff15???????? 8bf8 8b4610 57 } // n = 4, score = 100 // ff15???????? | // 8bf8 | mov edi, eax // 8b4610 | mov eax, dword ptr [esi + 0x10] // 57 | push edi $sequence_37 = { 00db 7313 752f 3b742404 0f830b010000 } // n = 5, score = 100 // 00db | add bl, bl // 7313 | jae 0x15 // 752f | jne 0x31 // 3b742404 | cmp esi, dword ptr [esp + 4] // 0f830b010000 | jae 0x111 $sequence_38 = { 85f0 0f8497010000 83e202 895584 740a 837d9c00 0f8485010000 } // n = 7, score = 100 // 85f0 | test eax, esi // 0f8497010000 | je 0x19d // 83e202 | and edx, 2 // 895584 | mov dword ptr [ebp - 0x7c], edx // 740a | je 0xc // 837d9c00 | cmp dword ptr [ebp - 0x64], 0 // 0f8485010000 | je 0x18b $sequence_39 = { ff15???????? 83c40c 83f8ff 7517 } // n = 4, score = 100 // ff15???????? | // 83c40c | add esp, 0xc // 83f8ff | cmp eax, -1 // 7517 | jne 0x19 $sequence_40 = { e9???????? 8b4c2404 0fb601 0fb65101 } // n = 4, score = 100 // e9???????? | // 8b4c2404 | mov ecx, dword ptr [esp + 4] // 0fb601 | movzx eax, byte ptr [ecx] // 0fb65101 | movzx edx, byte ptr [ecx + 1] $sequence_41 = { e9???????? 8d45f4 52 50 } // n = 4, score = 100 // e9???????? | // 8d45f4 | lea eax, [ebp - 0xc] // 52 | push edx // 50 | push eax $sequence_42 = { ff7510 53 ffd6 53 } // n = 4, score = 100 // ff7510 | push dword ptr [ebp + 0x10] // 53 | push ebx // ffd6 | call esi // 53 | push ebx $sequence_43 = { a4 8b35???????? 6a01 ffd6 68f9000000 } // n = 5, score = 100 // a4 | movsb byte ptr es:[edi], byte ptr [esi] // 8b35???????? | // 6a01 | push 1 // ffd6 | call esi // 68f9000000 | push 0xf9 $sequence_44 = { 8d8d68eeffff 51 e8???????? 83c40c 85c0 7520 } // n = 6, score = 100 // 8d8d68eeffff | lea ecx, [ebp - 0x1198] // 51 | push ecx // e8???????? | // 83c40c | add esp, 0xc // 85c0 | test eax, eax // 7520 | jne 0x22 $sequence_45 = { 8bec 83ec10 33c0 894dfc 8b4d0c } // n = 5, score = 100 // 8bec | mov ebp, esp // 83ec10 | sub esp, 0x10 // 33c0 | xor eax, eax // 894dfc | mov dword ptr [ebp - 4], ecx // 8b4d0c | mov ecx, dword ptr [ebp + 0xc] $sequence_46 = { 740f 6800800000 53 ff15???????? 59 eb0f } // n = 6, score = 100 // 740f | je 0x11 // 6800800000 | push 0x8000 // 53 | push ebx // ff15???????? | // 59 | pop ecx // eb0f | jmp 0x11 $sequence_47 = { e8???????? 8d45f4 50 e8???????? 8bca } // n = 5, score = 100 // e8???????? | // 8d45f4 | lea eax, [ebp - 0xc] // 50 | push eax // e8???????? | // 8bca | mov ecx, edx $sequence_48 = { 85c0 7549 68???????? 57 e8???????? 8d4df8 } // n = 6, score = 100 // 85c0 | test eax, eax // 7549 | jne 0x4b // 68???????? | // 57 | push edi // e8???????? | // 8d4df8 | lea ecx, [ebp - 8] $sequence_49 = { 83459010 394598 0f82f4feffff 5b } // n = 4, score = 100 // 83459010 | add dword ptr [ebp - 0x70], 0x10 // 394598 | cmp dword ptr [ebp - 0x68], eax // 0f82f4feffff | jb 0xfffffefa // 5b | pop ebx $sequence_50 = { 33c0 c3 668b442404 66c1c008 c3 e9???????? } // n = 6, score = 100 // 33c0 | xor eax, eax // c3 | ret // 668b442404 | mov ax, word ptr [esp + 4] // 66c1c008 | rol ax, 8 // c3 | ret // e9???????? | condition: 7 of them and filesize < 491520 }
If your designated proposal does not fit in any other category, feel free to write a free-text in the comment field below.
Please propose all changes regarding references on the Malpedia library page
Your suggestion will be reviewed before being published. Thank you for contributing!
YYYY-MM-DD
YYYY-MM
YYYY