SYMBOLCOMMON_NAMEaka. SYNONYMS
win.powersniff (Back to overview)

Powersniff

aka: PUNCHBUGGY

A malware of the gozi group, developed on the base of isfb. It uses Office Macros and PowerShell in documents distributed in e-mail messages.

References
2019-07-23GigamonKristina Savelesky, Ed Miles, Justin Warner
@online{savelesky:20190723:abadbabe:061c7a8, author = {Kristina Savelesky and Ed Miles and Justin Warner}, title = {{ABADBABE 8BADF00D: Discovering BADHATCH and a Detailed Look at FIN8’s Tooling}}, date = {2019-07-23}, organization = {Gigamon}, url = {https://atr-blog.gigamon.com/2019/07/23/abadbabe-8badf00d-discovering-badhatch-and-a-detailed-look-at-fin8s-tooling/}, language = {English}, urldate = {2020-02-09} } ABADBABE 8BADF00D: Discovering BADHATCH and a Detailed Look at FIN8’s Tooling
PoSlurp Powersniff
2017-05-29Lokalhost.plMaciej Kotowicz
@online{kotowicz:20170529:gozi:96e962d, author = {Maciej Kotowicz}, title = {{Gozi Tree}}, date = {2017-05-29}, organization = {Lokalhost.pl}, url = {https://lokalhost.pl/gozi_tree.txt}, language = {English}, urldate = {2020-01-08} } Gozi Tree
DreamBot Gozi ISFB Powersniff
2017-03-14FireEyeFireEye
@online{fireeye:20170314:mtrend:0ea7d30, author = {FireEye}, title = {{M-Trend 2017: A View From the Front Lines}}, date = {2017-03-14}, organization = {FireEye}, url = {https://content.fireeye.com/m-trends/rpt-m-trends-2017}, language = {English}, urldate = {2020-06-03} } M-Trend 2017: A View From the Front Lines
DistTrack Powersniff FIN8
Yara Rules
[TLP:WHITE] win_powersniff_auto (20201023 | autogenerated rule brought to you by yara-signator)
rule win_powersniff_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.powersniff"
        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 = { 5f 395df0 7409 ff75f0 ff15???????? 395df8 7415 }
            // n = 7, score = 100
            //   5f                   | pop                 edi
            //   395df0               | cmp                 dword ptr [ebp - 0x10], ebx
            //   7409                 | je                  0xb
            //   ff75f0               | push                dword ptr [ebp - 0x10]
            //   ff15????????         |                     
            //   395df8               | cmp                 dword ptr [ebp - 8], ebx
            //   7415                 | je                  0x17

        $sequence_1 = { 8bda c1eb08 8975ec 0fb6f3 8b34b590800010 8b5df4 c1eb18 }
            // n = 7, score = 100
            //   8bda                 | mov                 ebx, edx
            //   c1eb08               | shr                 ebx, 8
            //   8975ec               | mov                 dword ptr [ebp - 0x14], esi
            //   0fb6f3               | movzx               esi, bl
            //   8b34b590800010       | mov                 esi, dword ptr [esi*4 + 0x10008090]
            //   8b5df4               | mov                 ebx, dword ptr [ebp - 0xc]
            //   c1eb18               | shr                 ebx, 0x18

        $sequence_2 = { 6a04 56 ff75fc ff15???????? }
            // n = 4, score = 100
            //   6a04                 | push                4
            //   56                   | push                esi
            //   ff75fc               | push                dword ptr [ebp - 4]
            //   ff15????????         |                     

        $sequence_3 = { 8b7e18 3bfb 7540 8d4514 50 8d4510 50 }
            // n = 7, score = 100
            //   8b7e18               | mov                 edi, dword ptr [esi + 0x18]
            //   3bfb                 | cmp                 edi, ebx
            //   7540                 | jne                 0x42
            //   8d4514               | lea                 eax, [ebp + 0x14]
            //   50                   | push                eax
            //   8d4510               | lea                 eax, [ebp + 0x10]
            //   50                   | push                eax

        $sequence_4 = { 50 8bc6 e8???????? 85c0 7403 ff45fc 837df400 }
            // n = 7, score = 100
            //   50                   | push                eax
            //   8bc6                 | mov                 eax, esi
            //   e8????????           |                     
            //   85c0                 | test                eax, eax
            //   7403                 | je                  5
            //   ff45fc               | inc                 dword ptr [ebp - 4]
            //   837df400             | cmp                 dword ptr [ebp - 0xc], 0

        $sequence_5 = { 8bd8 c1eb10 88410b 885909 }
            // n = 4, score = 100
            //   8bd8                 | mov                 ebx, eax
            //   c1eb10               | shr                 ebx, 0x10
            //   88410b               | mov                 byte ptr [ecx + 0xb], al
            //   885909               | mov                 byte ptr [ecx + 9], bl

        $sequence_6 = { 3314b590740010 33500c 8b45ec 8bd8 c1eb18 }
            // n = 5, score = 100
            //   3314b590740010       | xor                 edx, dword ptr [esi*4 + 0x10007490]
            //   33500c               | xor                 edx, dword ptr [eax + 0xc]
            //   8b45ec               | mov                 eax, dword ptr [ebp - 0x14]
            //   8bd8                 | mov                 ebx, eax
            //   c1eb18               | shr                 ebx, 0x18

        $sequence_7 = { 83c104 83fa08 7cd6 c745fc???????? 8b781c 8bcf c1e910 }
            // n = 7, score = 100
            //   83c104               | add                 ecx, 4
            //   83fa08               | cmp                 edx, 8
            //   7cd6                 | jl                  0xffffffd8
            //   c745fc????????       |                     
            //   8b781c               | mov                 edi, dword ptr [eax + 0x1c]
            //   8bcf                 | mov                 ecx, edi
            //   c1e910               | shr                 ecx, 0x10

        $sequence_8 = { 0f8415010000 8b450c 8906 8b4510 894608 c7460401000000 8b45fc }
            // n = 7, score = 100
            //   0f8415010000         | je                  0x11b
            //   8b450c               | mov                 eax, dword ptr [ebp + 0xc]
            //   8906                 | mov                 dword ptr [esi], eax
            //   8b4510               | mov                 eax, dword ptr [ebp + 0x10]
            //   894608               | mov                 dword ptr [esi + 8], eax
            //   c7460401000000       | mov                 dword ptr [esi + 4], 1
            //   8b45fc               | mov                 eax, dword ptr [ebp - 4]

        $sequence_9 = { 3bde 0f858c000000 ff75fc ff15???????? 8d440032 }
            // n = 5, score = 100
            //   3bde                 | cmp                 ebx, esi
            //   0f858c000000         | jne                 0x92
            //   ff75fc               | push                dword ptr [ebp - 4]
            //   ff15????????         |                     
            //   8d440032             | lea                 eax, [eax + eax + 0x32]

    condition:
        7 of them and filesize < 90112
}
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