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rule win_alice_atm_auto { meta: author = "Felix Bilstein - yara-signator at cocacoding dot com" date = "2023-01-25" 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 = "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 = { 6a01 68c5000000 53 e8???????? 53 e8???????? } // n = 6, score = 100 // 6a01 | push 1 // 68c5000000 | push 0xc5 // 53 | push ebx // e8???????? | // 53 | push ebx // e8???????? | $sequence_1 = { c7430ce3154000 c74310f7164000 c743142a174000 c7431842174000 c7431c5a174000 ff7508 } // n = 6, score = 100 // c7430ce3154000 | mov dword ptr [ebx + 0xc], 0x4015e3 // 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 // ff7508 | push dword ptr [ebp + 8] $sequence_2 = { 6803000300 68???????? e8???????? 0bc0 } // n = 4, score = 100 // 6803000300 | push 0x30003 // 68???????? | // e8???????? | // 0bc0 | or eax, eax $sequence_3 = { e8???????? a3???????? 6a03 e8???????? } // n = 4, score = 100 // e8???????? | // a3???????? | // 6a03 | push 3 // e8???????? | $sequence_4 = { c7431c5a174000 ff7508 8f4320 895dfc 837dfc00 750a } // n = 6, score = 100 // c7431c5a174000 | mov dword ptr [ebx + 0x1c], 0x40175a // ff7508 | push dword ptr [ebp + 8] // 8f4320 | pop dword ptr [ebx + 0x20] // 895dfc | mov dword ptr [ebp - 4], ebx // 837dfc00 | cmp dword ptr [ebp - 4], 0 // 750a | jne 0xc $sequence_5 = { 7414 6a00 6a00 6809100000 ff7320 e8???????? 8945fc } // n = 7, score = 100 // 7414 | je 0x16 // 6a00 | push 0 // 6a00 | push 0 // 6809100000 | push 0x1009 // ff7320 | push dword ptr [ebx + 0x20] // e8???????? | // 8945fc | mov dword ptr [ebp - 4], eax $sequence_6 = { 817d0c11010000 0f858b000000 8b4d10 6681f9d507 0f859f000000 c1e910 } // n = 6, score = 100 // 817d0c11010000 | cmp dword ptr [ebp + 0xc], 0x111 // 0f858b000000 | jne 0x91 // 8b4d10 | mov ecx, dword ptr [ebp + 0x10] // 6681f9d507 | cmp cx, 0x7d5 // 0f859f000000 | jne 0xa5 // c1e910 | shr ecx, 0x10 $sequence_7 = { 75ed 2b7d0c 7503 ff45fc 6a00 } // n = 5, score = 100 // 75ed | jne 0xffffffef // 2b7d0c | sub edi, dword ptr [ebp + 0xc] // 7503 | jne 5 // ff45fc | inc dword ptr [ebp - 4] // 6a00 | push 0 $sequence_8 = { 68???????? ff7514 e8???????? 8b45fc 5f 5e } // n = 6, score = 100 // 68???????? | // ff7514 | push dword ptr [ebp + 0x14] // e8???????? | // 8b45fc | mov eax, dword ptr [ebp - 4] // 5f | pop edi // 5e | pop esi $sequence_9 = { 0bc0 0f8430010000 53 ff5310 8b7510 56 e8???????? } // n = 7, score = 100 // 0bc0 | or eax, eax // 0f8430010000 | je 0x136 // 53 | push ebx // ff5310 | call dword ptr [ebx + 0x10] // 8b7510 | mov esi, dword ptr [ebp + 0x10] // 56 | push esi // e8???????? | 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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