Actor(s): Putter Panda
There is no description at this point.
rule win_pngdowner_auto { meta: author = "Felix Bilstein - yara-signator at cocacoding dot com" date = "2023-12-06" version = "1" description = "Detects win.pngdowner." 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.pngdowner" malpedia_rule_date = "20231130" malpedia_hash = "fc8a0e9f343f6d6ded9e7df1a64dac0cc68d7351" malpedia_version = "20230808" 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 c705????????01000000 50 a3???????? e8???????? 8db6bcdc4000 bf???????? } // n = 7, score = 200 // 8b4508 | mov eax, dword ptr [ebp + 8] // c705????????01000000 | // 50 | push eax // a3???????? | // e8???????? | // 8db6bcdc4000 | lea esi, [esi + 0x40dcbc] // bf???????? | $sequence_1 = { ff15???????? 85c0 a3???????? 741b 6a00 6a00 } // n = 6, score = 200 // ff15???????? | // 85c0 | test eax, eax // a3???????? | // 741b | je 0x1d // 6a00 | push 0 // 6a00 | push 0 $sequence_2 = { 7552 833c8580e0400000 53 57 } // n = 4, score = 200 // 7552 | jne 0x54 // 833c8580e0400000 | cmp dword ptr [eax*4 + 0x40e080], 0 // 53 | push ebx // 57 | push edi $sequence_3 = { c74050c0b54000 c7401401000000 c3 56 57 ff15???????? } // n = 6, score = 200 // c74050c0b54000 | mov dword ptr [eax + 0x50], 0x40b5c0 // c7401401000000 | mov dword ptr [eax + 0x14], 1 // c3 | ret // 56 | push esi // 57 | push edi // ff15???????? | $sequence_4 = { c1ff05 83e11f 8b3cbd40e64000 8d0cc9 8d3c8f eb05 bf???????? } // n = 7, score = 200 // c1ff05 | sar edi, 5 // 83e11f | and ecx, 0x1f // 8b3cbd40e64000 | mov edi, dword ptr [edi*4 + 0x40e640] // 8d0cc9 | lea ecx, [ecx + ecx*8] // 8d3c8f | lea edi, [edi + ecx*4] // eb05 | jmp 7 // bf???????? | $sequence_5 = { 83c8ff 5b 81c420000100 c3 8b3d???????? 8d4c2420 } // n = 6, score = 200 // 83c8ff | or eax, 0xffffffff // 5b | pop ebx // 81c420000100 | add esp, 0x10020 // c3 | ret // 8b3d???????? | // 8d4c2420 | lea ecx, [esp + 0x20] $sequence_6 = { ff74240c e8???????? 83c40c c3 e8???????? 8b4c2404 894814 } // n = 7, score = 200 // ff74240c | push dword ptr [esp + 0xc] // e8???????? | // 83c40c | add esp, 0xc // c3 | ret // e8???????? | // 8b4c2404 | mov ecx, dword ptr [esp + 4] // 894814 | mov dword ptr [eax + 0x14], ecx $sequence_7 = { c3 33c0 5e c3 8b442404 c74050c0b54000 } // n = 6, score = 200 // c3 | ret // 33c0 | xor eax, eax // 5e | pop esi // c3 | ret // 8b442404 | mov eax, dword ptr [esp + 4] // c74050c0b54000 | mov dword ptr [eax + 0x50], 0x40b5c0 $sequence_8 = { 8b1d???????? b900400000 33c0 8d7c2420 8d542420 } // n = 5, score = 200 // 8b1d???????? | // b900400000 | mov ecx, 0x4000 // 33c0 | xor eax, eax // 8d7c2420 | lea edi, [esp + 0x20] // 8d542420 | lea edx, [esp + 0x20] $sequence_9 = { ff742404 e8???????? 59 c3 56 8bf1 6a1b } // n = 7, score = 200 // ff742404 | push dword ptr [esp + 4] // e8???????? | // 59 | pop ecx // c3 | ret // 56 | push esi // 8bf1 | mov esi, ecx // 6a1b | push 0x1b condition: 7 of them and filesize < 131072 }
rule win_pngdowner_w0 { meta: author = "CrowdStrike, Inc." description = "PUTTER PANDA - PNGDOWNER" date = "2014-03-30" version = "1.0" in_the_wild = true copyright = "CrowdStrike, Inc." actor = "Putter Panda" actor_type = "APT" source = "https://www.iocbucket.com/iocs/7f7999ab7f223409ea9ea10cff82b064ce2a1a31" malpedia_reference = "https://malpedia.caad.fkie.fraunhofer.de/details/win.pngdowner" malpedia_version = "20180911" malpedia_sharing = "TLP:WHITE" malpedia_license = "" strings: $myagent = "myAgent" $readfile = "read file error:" $downfile = "down file success" $avail = "Avaliable data:%u bytes" condition: 3 of them }
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