SYMBOLCOMMON_NAMEaka. SYNONYMS
win.dma_locker (Back to overview)

DMA Locker


There is no description at this point.

References
2016-05-23Malwarebyteshasherezade
@online{hasherezade:20160523:dma:352692f, author = {hasherezade}, title = {{DMA Locker 4.0: Known ransomware preparing for a massive distribution}}, date = {2016-05-23}, organization = {Malwarebytes}, url = {https://blog.malwarebytes.com/threat-analysis/2016/05/dma-locker-4-0-known-ransomware-preparing-for-a-massive-distribution/}, language = {English}, urldate = {2019-12-20} } DMA Locker 4.0: Known ransomware preparing for a massive distribution
DMA Locker
2016-02-09Malwarebyteshasherezade
@online{hasherezade:20160209:dma:1fe0c43, author = {hasherezade}, title = {{DMA Locker Strikes Back}}, date = {2016-02-09}, organization = {Malwarebytes}, url = {https://blog.malwarebytes.com/threat-analysis/2016/02/dma-locker-strikes-back/}, language = {English}, urldate = {2019-12-20} } DMA Locker Strikes Back
DMA Locker
2016-02-02Malwarebyteshasherezade
@online{hasherezade:20160202:dma:5d599e2, author = {hasherezade}, title = {{DMA Locker: New Ransomware, But No Reason To Panic}}, date = {2016-02-02}, organization = {Malwarebytes}, url = {https://blog.malwarebytes.com/threat-analysis/2016/02/dma-locker-a-new-ransomware-but-no-reason-to-panic/}, language = {English}, urldate = {2019-12-20} } DMA Locker: New Ransomware, But No Reason To Panic
DMA Locker
Yara Rules
[TLP:WHITE] win_dma_locker_auto (20230125 | Detects win.dma_locker.)
rule win_dma_locker_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2023-01-25"
        version = "1"
        description = "Detects win.dma_locker."
        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.dma_locker"
        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 = { 6a00 ffd7 50 6a00 56 6a17 68f4010000 }
            // n = 7, score = 200
            //   6a00                 | push                0
            //   ffd7                 | call                edi
            //   50                   | push                eax
            //   6a00                 | push                0
            //   56                   | push                esi
            //   6a17                 | push                0x17
            //   68f4010000           | push                0x1f4

        $sequence_1 = { 6a00 8b4c2420 8b15???????? 51 6a30 52 }
            // n = 6, score = 200
            //   6a00                 | push                0
            //   8b4c2420             | mov                 ecx, dword ptr [esp + 0x20]
            //   8b15????????         |                     
            //   51                   | push                ecx
            //   6a30                 | push                0x30
            //   52                   | push                edx

        $sequence_2 = { 50 c744243408020000 ff15???????? 85c0 0f85e7000000 8b4b1c }
            // n = 6, score = 200
            //   50                   | push                eax
            //   c744243408020000     | mov                 dword ptr [esp + 0x34], 0x208
            //   ff15????????         |                     
            //   85c0                 | test                eax, eax
            //   0f85e7000000         | jne                 0xed
            //   8b4b1c               | mov                 ecx, dword ptr [ebx + 0x1c]

        $sequence_3 = { e8???????? 8be5 5d c3 8b4dfc 5f 885e14 }
            // n = 7, score = 200
            //   e8????????           |                     
            //   8be5                 | mov                 esp, ebp
            //   5d                   | pop                 ebp
            //   c3                   | ret                 
            //   8b4dfc               | mov                 ecx, dword ptr [ebp - 4]
            //   5f                   | pop                 edi
            //   885e14               | mov                 byte ptr [esi + 0x14], bl

        $sequence_4 = { 68???????? 50 c744243408020000 ffd7 }
            // n = 4, score = 200
            //   68????????           |                     
            //   50                   | push                eax
            //   c744243408020000     | mov                 dword ptr [esp + 0x34], 0x208
            //   ffd7                 | call                edi

        $sequence_5 = { 6800100000 53 50 e8???????? 83c40c 8b9dc0efffff }
            // n = 6, score = 200
            //   6800100000           | push                0x1000
            //   53                   | push                ebx
            //   50                   | push                eax
            //   e8????????           |                     
            //   83c40c               | add                 esp, 0xc
            //   8b9dc0efffff         | mov                 ebx, dword ptr [ebp - 0x1040]

        $sequence_6 = { 3b35???????? 0f84d3000000 3b35???????? 0f84c7000000 3b35???????? 0f84bb000000 3b35???????? }
            // n = 7, score = 200
            //   3b35????????         |                     
            //   0f84d3000000         | je                  0xd9
            //   3b35????????         |                     
            //   0f84c7000000         | je                  0xcd
            //   3b35????????         |                     
            //   0f84bb000000         | je                  0xc1
            //   3b35????????         |                     

        $sequence_7 = { c744243408020000 ff15???????? 85c0 0f85e7000000 8b4b1c 8901 894104 }
            // n = 7, score = 200
            //   c744243408020000     | mov                 dword ptr [esp + 0x34], 0x208
            //   ff15????????         |                     
            //   85c0                 | test                eax, eax
            //   0f85e7000000         | jne                 0xed
            //   8b4b1c               | mov                 ecx, dword ptr [ebx + 0x1c]
            //   8901                 | mov                 dword ptr [ecx], eax
            //   894104               | mov                 dword ptr [ecx + 4], eax

        $sequence_8 = { a3???????? ff15???????? 8b0d???????? 68???????? 51 ff15???????? 8b542414 }
            // n = 7, score = 200
            //   a3????????           |                     
            //   ff15????????         |                     
            //   8b0d????????         |                     
            //   68????????           |                     
            //   51                   | push                ecx
            //   ff15????????         |                     
            //   8b542414             | mov                 edx, dword ptr [esp + 0x14]

        $sequence_9 = { 85c0 0f8561feffff 57 ff15???????? 8b4dfc 5f 5e }
            // n = 7, score = 200
            //   85c0                 | test                eax, eax
            //   0f8561feffff         | jne                 0xfffffe67
            //   57                   | push                edi
            //   ff15????????         |                     
            //   8b4dfc               | mov                 ecx, dword ptr [ebp - 4]
            //   5f                   | pop                 edi
            //   5e                   | pop                 esi

    condition:
        7 of them and filesize < 532480
}
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