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rule win_alice_atm_auto { meta: author = "Felix Bilstein - yara-signator at cocacoding dot com" date = "2022-04-08" version = "1" description = "Detects win.alice_atm." 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.alice_atm" 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 = { 68???????? 57 ff7514 e8???????? ff7609 e8???????? } // n = 6, score = 100 // 68???????? | // 57 | push edi // ff7514 | push dword ptr [ebp + 0x14] // e8???????? | // ff7609 | push dword ptr [esi + 9] // e8???????? | $sequence_1 = { 0bff 7440 57 6a40 e8???????? 0bc0 7434 } // n = 7, score = 100 // 0bff | or edi, edi // 7440 | je 0x42 // 57 | push edi // 6a40 | push 0x40 // e8???????? | // 0bc0 | or eax, eax // 7434 | je 0x36 $sequence_2 = { 0fb77e02 8bdf 6bff10 0bff 7440 57 6a40 } // n = 7, score = 100 // 0fb77e02 | movzx edi, word ptr [esi + 2] // 8bdf | mov ebx, edi // 6bff10 | imul edi, edi, 0x10 // 0bff | or edi, edi // 7440 | je 0x42 // 57 | push edi // 6a40 | push 0x40 $sequence_3 = { 53 ff13 6a50 68???????? 53 ff13 } // n = 6, score = 100 // 53 | push ebx // ff13 | call dword ptr [ebx] // 6a50 | push 0x50 // 68???????? | // 53 | push ebx // ff13 | call dword ptr [ebx] $sequence_4 = { e8???????? 8d5da8 68ec030000 ff7508 e8???????? } // n = 5, score = 100 // e8???????? | // 8d5da8 | lea ebx, dword ptr [ebp - 0x58] // 68ec030000 | push 0x3ec // ff7508 | push dword ptr [ebp + 8] // e8???????? | $sequence_5 = { 0f8407010000 817e0c20202000 0f8480000000 ff36 68???????? 8d45f8 } // n = 6, score = 100 // 0f8407010000 | je 0x10d // 817e0c20202000 | cmp dword ptr [esi + 0xc], 0x202020 // 0f8480000000 | je 0x86 // ff36 | push dword ptr [esi] // 68???????? | // 8d45f8 | lea eax, dword ptr [ebp - 8] $sequence_6 = { 68???????? ff7514 e8???????? 8b45fc } // n = 4, score = 100 // 68???????? | // ff7514 | push dword ptr [ebp + 0x14] // e8???????? | // 8b45fc | mov eax, dword ptr [ebp - 4] $sequence_7 = { c74310f7164000 c743142a174000 c7431842174000 c7431c5a174000 } // n = 4, score = 100 // c74310f7164000 | mov dword ptr [ebx + 0x10], 0x4016f7 // c743142a174000 | mov dword ptr [ebx + 0x14], 0x40172a // c7431842174000 | mov dword ptr [ebx + 0x18], 0x401742 // c7431c5a174000 | mov dword ptr [ebx + 0x1c], 0x40175a $sequence_8 = { e8???????? 53 e8???????? 8d5da8 } // n = 4, score = 100 // e8???????? | // 53 | push ebx // e8???????? | // 8d5da8 | lea ebx, dword ptr [ebp - 0x58] $sequence_9 = { 68???????? 57 ff7514 e8???????? ff7609 } // n = 5, score = 100 // 68???????? | // 57 | push edi // ff7514 | push dword ptr [ebp + 0x14] // e8???????? | // ff7609 | push dword ptr [esi + 9] condition: 7 of them and filesize < 49152 }
rule win_alice_atm_w0 { meta: description = "Detects of ATM Malware ALICE" author = "Frank Boldewin (@r3c0nst)" reference = "https://twitter.com/r3c0nst/status/1215265889844637696" date = "2020-01-09" hash = "6b2fac8331e4b3e108aa829b297347f686ade233b24d94d881dc4eff81b9eb30" source = "https://raw.githubusercontent.com/fboldewin/YARA-rules/master/ATM.Malware.ALICE.yar" malpedia_reference = "https://malpedia.caad.fkie.fraunhofer.de/details/win.alice_atm" malpedia_version = "20200113" malpedia_license = "CC BY-NC-SA 4.0" malpedia_sharing = "TLP:WHITE" strings: $String1 = "Project Alice" ascii nocase $String2 = "Can't dispense requested amount." ascii nocase $String3 = "Selected cassette is unavailable" ascii nocase $String4 = "ATM update manager" wide nocase $String5 = "Input PIN-code for access" wide nocase $String6 = "Supervisor ID" wide nocase $Code1 = {50 68 08 07 00 00 6A 00 FF 75 0C FF 75 08 E8} // Get Cash Unit Info $Code2 = {50 6A 00 FF 75 10 FF 75 0C FF 75 08 E8} // Dispense Cash $Code3 = {68 ?? ?? ?? ?? 53 E8 ?? ?? ?? ?? 0B C0 75 29 6A} // Check Supervisor ID condition: uint16(0) == 0x5A4D and filesize < 200KB and 4 of ($String*) and all of ($Code*) }
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