Actor(s): Lazarus Group
There is no description at this point.
rule win_hardrain_auto { meta: author = "Felix Bilstein - yara-signator at cocacoding dot com" date = "2020-12-22" version = "1" description = "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.hardrain" malpedia_rule_date = "20201222" malpedia_hash = "30354d830a29f0fbd3714d93d94dea941d77a130" malpedia_version = "20201023" 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 = { 57 8bf9 85ed 897c2410 750a 5f 5e } // n = 7, score = 200 // 57 | push edi // 8bf9 | mov edi, ecx // 85ed | test ebp, ebp // 897c2410 | mov dword ptr [esp + 0x10], edi // 750a | jne 0xc // 5f | pop edi // 5e | pop esi $sequence_1 = { e8???????? 85c0 0f8498000000 55 8bce e8???????? } // n = 6, score = 200 // e8???????? | // 85c0 | test eax, eax // 0f8498000000 | je 0x9e // 55 | push ebp // 8bce | mov ecx, esi // e8???????? | $sequence_2 = { 5e 81c418010000 c20400 83ec0c } // n = 4, score = 200 // 5e | pop esi // 81c418010000 | add esp, 0x118 // c20400 | ret 4 // 83ec0c | sub esp, 0xc $sequence_3 = { 40 668b00 50 ff15???????? 6689460c } // n = 5, score = 200 // 40 | inc eax // 668b00 | mov ax, word ptr [eax] // 50 | push eax // ff15???????? | // 6689460c | mov word ptr [esi + 0xc], ax $sequence_4 = { 8bce e8???????? 85c0 0f84b0000000 55 8bce e8???????? } // n = 7, score = 200 // 8bce | mov ecx, esi // e8???????? | // 85c0 | test eax, eax // 0f84b0000000 | je 0xb6 // 55 | push ebp // 8bce | mov ecx, esi // e8???????? | $sequence_5 = { 85ff 897108 7e21 53 8bdf 8b790c } // n = 6, score = 200 // 85ff | test edi, edi // 897108 | mov dword ptr [ecx + 8], esi // 7e21 | jle 0x23 // 53 | push ebx // 8bdf | mov ebx, edi // 8b790c | mov edi, dword ptr [ecx + 0xc] $sequence_6 = { 89442418 894c2414 e8???????? 83c410 85c0 740a } // n = 6, score = 200 // 89442418 | mov dword ptr [esp + 0x18], eax // 894c2414 | mov dword ptr [esp + 0x14], ecx // e8???????? | // 83c410 | add esp, 0x10 // 85c0 | test eax, eax // 740a | je 0xc $sequence_7 = { 897104 5e 7428 8bc2 d1e8 33c2 c1e804 } // n = 7, score = 200 // 897104 | mov dword ptr [ecx + 4], esi // 5e | pop esi // 7428 | je 0x2a // 8bc2 | mov eax, edx // d1e8 | shr eax, 1 // 33c2 | xor eax, edx // c1e804 | shr eax, 4 $sequence_8 = { 894c242c e8???????? 83c414 85c0 740a b802000000 5e } // n = 7, score = 200 // 894c242c | mov dword ptr [esp + 0x2c], ecx // e8???????? | // 83c414 | add esp, 0x14 // 85c0 | test eax, eax // 740a | je 0xc // b802000000 | mov eax, 2 // 5e | pop esi $sequence_9 = { 8b4c2404 68b4000000 6a01 680c010000 50 51 e8???????? } // n = 7, score = 200 // 8b4c2404 | mov ecx, dword ptr [esp + 4] // 68b4000000 | push 0xb4 // 6a01 | push 1 // 680c010000 | push 0x10c // 50 | push eax // 51 | push ecx // e8???????? | condition: 7 of them and filesize < 368640 }
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