There is no description at this point.
rule win_zerot_auto { meta: author = "Felix Bilstein - yara-signator at cocacoding dot com" date = "2023-01-25" version = "1" description = "Detects win.zerot." 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.zerot" 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 = { b8cc320000 e8???????? a1???????? 33c5 } // n = 4, score = 200 // b8cc320000 | mov eax, 0x32cc // e8???????? | // a1???????? | // 33c5 | xor eax, ebp $sequence_1 = { 8b45e8 881430 8a4ffc 02c9 02ca 8bd0 880c32 } // n = 7, score = 200 // 8b45e8 | mov eax, dword ptr [ebp - 0x18] // 881430 | mov byte ptr [eax + esi], dl // 8a4ffc | mov cl, byte ptr [edi - 4] // 02c9 | add cl, cl // 02ca | add cl, dl // 8bd0 | mov edx, eax // 880c32 | mov byte ptr [edx + esi], cl $sequence_2 = { 68ff010f00 50 50 ffb52cf6ffff ff15???????? 8bf0 } // n = 6, score = 200 // 68ff010f00 | push 0xf01ff // 50 | push eax // 50 | push eax // ffb52cf6ffff | push dword ptr [ebp - 0x9d4] // ff15???????? | // 8bf0 | mov esi, eax $sequence_3 = { 0f847a030000 57 8d8528fdffff 50 68???????? } // n = 5, score = 200 // 0f847a030000 | je 0x380 // 57 | push edi // 8d8528fdffff | lea eax, [ebp - 0x2d8] // 50 | push eax // 68???????? | $sequence_4 = { ff760c e8???????? ff35???????? e8???????? 8b45ec 50 } // n = 6, score = 200 // ff760c | push dword ptr [esi + 0xc] // e8???????? | // ff35???????? | // e8???????? | // 8b45ec | mov eax, dword ptr [ebp - 0x14] // 50 | push eax $sequence_5 = { 8d4590 50 0f1145d1 660fd645e1 e8???????? } // n = 5, score = 200 // 8d4590 | lea eax, [ebp - 0x70] // 50 | push eax // 0f1145d1 | movups xmmword ptr [ebp - 0x2f], xmm0 // 660fd645e1 | movq qword ptr [ebp - 0x1f], xmm0 // e8???????? | $sequence_6 = { 6880000000 8d853cfeffff 6a00 50 e8???????? ffb534f6ffff } // n = 6, score = 200 // 6880000000 | push 0x80 // 8d853cfeffff | lea eax, [ebp - 0x1c4] // 6a00 | push 0 // 50 | push eax // e8???????? | // ffb534f6ffff | push dword ptr [ebp - 0x9cc] $sequence_7 = { 8d8fff010000 898530cdffff 51 6a00 } // n = 4, score = 200 // 8d8fff010000 | lea ecx, [edi + 0x1ff] // 898530cdffff | mov dword ptr [ebp - 0x32d0], eax // 51 | push ecx // 6a00 | push 0 $sequence_8 = { 84c0 75f9 2bca 51 53 6a07 } // n = 6, score = 200 // 84c0 | test al, al // 75f9 | jne 0xfffffffb // 2bca | sub ecx, edx // 51 | push ecx // 53 | push ebx // 6a07 | push 7 $sequence_9 = { 898530fcffff 90 33db bf01000000 } // n = 4, score = 200 // 898530fcffff | mov dword ptr [ebp - 0x3d0], eax // 90 | nop // 33db | xor ebx, ebx // bf01000000 | mov edi, 1 condition: 7 of them and filesize < 303104 }
rule win_zerot_w0 { meta: description = "Detects malware from the Proofpoint CN APT ZeroT incident" author = "Florian Roth" reference = "https://www.proofpoint.com/us/threat-insight/post/APT-targets-russia-belarus-zerot-plugx" malpedia_reference = "https://malpedia.caad.fkie.fraunhofer.de/details/win.zerot" malpedia_version = "20180301" malpedia_license = "CC BY-NC-SA 4.0" malpedia_sharing = "TLP:WHITE" strings: $s6 = "jGetgQ|0h9=" fullword ascii condition: ( 10 of ($s*) ) or ( all of them ) }
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