SYMBOLCOMMON_NAMEaka. SYNONYMS
win.pslogger (Back to overview)

PSLogger

aka: ECCENTRICBANDWAGON

Actor(s): Lazarus Group


There is no description at this point.

References
2020-08-26CISACISA
@online{cisa:20200826:mar103017061v1:735a8fc, author = {CISA}, title = {{MAR-10301706-1.v1 - North Korean Remote Access Tool: ECCENTRICBANDWAGON}}, date = {2020-08-26}, organization = {CISA}, url = {https://us-cert.cisa.gov/ncas/analysis-reports/ar20-239a}, language = {English}, urldate = {2020-09-01} } MAR-10301706-1.v1 - North Korean Remote Access Tool: ECCENTRICBANDWAGON
PSLogger
2019-08-11Twitter (@KevinPerlow)Kevin Perlow
@online{perlow:20190811:updated:b23bfc9, author = {Kevin Perlow}, title = {{Updated #Lazarus Keylogger (uploaded June)}}, date = {2019-08-11}, organization = {Twitter (@KevinPerlow)}, url = {https://twitter.com/KevinPerlow/status/1160766519615381504}, language = {English}, urldate = {2022-11-21} } Updated #Lazarus Keylogger (uploaded June)
PSLogger
2019-01-22One Night in NorfolkNorfolk
@online{norfolk:20190122:lazarus:74b5983, author = {Norfolk}, title = {{A Lazarus Keylogger- PSLogger}}, date = {2019-01-22}, organization = {One Night in Norfolk}, url = {https://norfolkinfosec.com/a-lazarus-keylogger-pslogger/}, language = {English}, urldate = {2020-01-10} } A Lazarus Keylogger- PSLogger
PSLogger
Yara Rules
[TLP:WHITE] win_pslogger_auto (20230125 | Detects win.pslogger.)
rule win_pslogger_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2023-01-25"
        version = "1"
        description = "Detects win.pslogger."
        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.pslogger"
        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 = { 8b5308 8b4b14 412bc8 448b4b10 442bca }
            // n = 5, score = 400
            //   8b5308               | je                  0xb
            //   8b4b14               | dec                 eax
            //   412bc8               | add                 ebx, 0x18
            //   448b4b10             | dec                 eax
            //   442bca               | cmp                 ebx, dword ptr [edi + 8]

        $sequence_1 = { cc 488b0e 483bc8 740e }
            // n = 4, score = 400
            //   cc                   | int3                
            //   488b0e               | dec                 eax
            //   483bc8               | mov                 ecx, dword ptr [esi]
            //   740e                 | dec                 eax

        $sequence_2 = { 746f 833802 740c c705????????00000800 eb15 488b4808 }
            // n = 6, score = 400
            //   746f                 | cmp                 ecx, eax
            //   833802               | je                  0x10
            //   740c                 | je                  0x71
            //   c705????????00000800     |     
            //   eb15                 | cmp                 dword ptr [eax], 2
            //   488b4808             | je                  0x11

        $sequence_3 = { 488b05???????? 4833c4 4889842488000000 498bf9 498bd8 488bf2 }
            // n = 6, score = 400
            //   488b05????????       |                     
            //   4833c4               | xor                 edx, edx
            //   4889842488000000     | dec                 eax
            //   498bf9               | mov                 ecx, dword ptr [ebx]
            //   498bd8               | dec                 eax
            //   488bf2               | test                ecx, ecx

        $sequence_4 = { e8???????? 488d8c2480030000 e8???????? 488d542420 }
            // n = 4, score = 400
            //   e8????????           |                     
            //   488d8c2480030000     | jmp                 0x17
            //   e8????????           |                     
            //   488d542420           | dec                 eax

        $sequence_5 = { 488b0b 4885c9 7406 ff15???????? 4883c318 483b5f08 }
            // n = 6, score = 400
            //   488b0b               | dec                 eax
            //   4885c9               | lea                 edx, [esp + 0x20]
            //   7406                 | dec                 eax
            //   ff15????????         |                     
            //   4883c318             | add                 esp, 0x28
            //   483b5f08             | ret                 

        $sequence_6 = { e9???????? b910000000 ff15???????? 6685c0 }
            // n = 4, score = 400
            //   e9????????           |                     
            //   b910000000           | mov                 ecx, 0x10
            //   ff15????????         |                     
            //   6685c0               | test                ax, ax

        $sequence_7 = { 4883c428 c3 488b0d???????? 33d2 ff15???????? }
            // n = 5, score = 400
            //   4883c428             | mov                 ecx, dword ptr [eax + 8]
            //   c3                   | dec                 eax
            //   488b0d????????       |                     
            //   33d2                 | lea                 ecx, [esp + 0x380]
            //   ff15????????         |                     

        $sequence_8 = { 68b80b0000 e8???????? 83c404 8bd8 895c2410 }
            // n = 5, score = 100
            //   68b80b0000           | mov                 esi, edx
            //   e8????????           |                     
            //   83c404               | mov                 edx, dword ptr [ebx + 8]
            //   8bd8                 | mov                 ecx, dword ptr [ebx + 0x14]
            //   895c2410             | inc                 ecx

        $sequence_9 = { 8b5364 8bc2 0facc108 53 c1f808 884df6 8bc2 }
            // n = 7, score = 100
            //   8b5364               | dec                 eax
            //   8bc2                 | mov                 dword ptr [esp + 0x88], eax
            //   0facc108             | dec                 ecx
            //   53                   | mov                 edi, ecx
            //   c1f808               | dec                 ecx
            //   884df6               | mov                 ebx, eax
            //   8bc2                 | dec                 eax

        $sequence_10 = { 75f6 a1???????? 8907 8d442410 }
            // n = 4, score = 100
            //   75f6                 | cmp                 ebx, dword ptr [edi + 8]
            //   a1????????           |                     
            //   8907                 | dec                 eax
            //   8d442410             | xor                 eax, esp

        $sequence_11 = { 83c404 6898400000 56 c70600000000 e8???????? 6a08 57 }
            // n = 7, score = 100
            //   83c404               | test                ax, ax
            //   6898400000           | jns                 0x12
            //   56                   | mov                 ecx, 0x14
            //   c70600000000         | add                 esp, 0x28
            //   e8????????           |                     
            //   6a08                 | mov                 byte ptr [ebx + 0xc], 0
            //   57                   | push                esi

        $sequence_12 = { e8???????? 83c428 c6430c00 56 ff15???????? 8bf0 }
            // n = 6, score = 100
            //   e8????????           |                     
            //   83c428               | dec                 eax
            //   c6430c00             | lea                 edx, [esp + 0x20]
            //   56                   | dec                 eax
            //   ff15????????         |                     
            //   8bf0                 | add                 esp, 0x28

        $sequence_13 = { c745e8502f78a4 c745ec74cd340b c745f01a0f55fd 66c745f4fdfd c645f6fd }
            // n = 5, score = 100
            //   c745e8502f78a4       | sub                 ecx, eax
            //   c745ec74cd340b       | inc                 esp
            //   c745f01a0f55fd       | mov                 ecx, dword ptr [ebx + 0x10]
            //   66c745f4fdfd         | inc                 esp
            //   c645f6fd             | sub                 ecx, edx

        $sequence_14 = { 8b3d???????? 83c420 6a00 6a00 6aff 53 6a00 }
            // n = 7, score = 100
            //   8b3d????????         |                     
            //   83c420               | dec                 eax
            //   6a00                 | test                ecx, ecx
            //   6a00                 | je                  0xb
            //   6aff                 | dec                 eax
            //   53                   | add                 ebx, 0x18
            //   6a00                 | dec                 eax

        $sequence_15 = { 68???????? 50 e8???????? 8d45d0 c745cc44024200 50 }
            // n = 6, score = 100
            //   68????????           |                     
            //   50                   | ret                 
            //   e8????????           |                     
            //   8d45d0               | xor                 edx, edx
            //   c745cc44024200       | dec                 eax
            //   50                   | mov                 ecx, dword ptr [ebx]

    condition:
        7 of them and filesize < 475136
}
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