SYMBOLCOMMON_NAMEaka. SYNONYMS
win.citadel (Back to overview)

Citadel

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References
2017-12-11Group-IBGroup-IB
@techreport{groupib:20171211:moneytaker:49776be, author = {Group-IB}, title = {{MoneyTaker 1.5 YEARS OF SILENT OPERATIONS}}, date = {2017-12-11}, institution = {Group-IB}, url = {https://vx-underground.org/archive/APTs/2017/2017.12.11/Money%20Taker.pdf}, language = {English}, urldate = {2021-02-09} } MoneyTaker 1.5 YEARS OF SILENT OPERATIONS
Citadel Kronos Meterpreter
2016-02-19XyliBoxXylitol
@online{xylitol:20160219:citadel:93968a2, author = {Xylitol}, title = {{Citadel 0.0.1.1 (Atmos)}}, date = {2016-02-19}, organization = {XyliBox}, url = {http://www.xylibox.com/2016/02/citadel-0011-atmos.html}, language = {English}, urldate = {2020-01-09} } Citadel 0.0.1.1 (Atmos)
Citadel
2016-02-16JPCERT/CCJPCert
@online{jpcert:20160216:banking:43d5789, author = {JPCert}, title = {{Banking Trojan “Citadel” Returns}}, date = {2016-02-16}, organization = {JPCERT/CC}, url = {http://blog.jpcert.or.jp/2016/02/banking-trojan--27d6.html}, language = {English}, urldate = {2019-12-19} } Banking Trojan “Citadel” Returns
Citadel
2012-11-05MalwarebytesJérôme Segura
@online{segura:20121105:citadel:f1d7f7d, author = {Jérôme Segura}, title = {{Citadel: a cyber-criminal’s ultimate weapon?}}, date = {2012-11-05}, organization = {Malwarebytes}, url = {https://blog.malwarebytes.com/threat-analysis/2012/11/citadel-a-cyber-criminals-ultimate-weapon/}, language = {English}, urldate = {2019-12-20} } Citadel: a cyber-criminal’s ultimate weapon?
Citadel
Yara Rules
[TLP:WHITE] win_citadel_auto (20201023 | autogenerated rule brought to you by yara-signator)
rule win_citadel_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.citadel"
        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 = { eb0e 6800800000 53 57 56 }
            // n = 5, score = 4900
            //   eb0e                 | jmp                 0x10
            //   6800800000           | push                0x8000
            //   53                   | push                ebx
            //   57                   | push                edi
            //   56                   | push                esi

        $sequence_1 = { 89442414 e8???????? 84c0 7407 c644240f01 eb2f 8bcb }
            // n = 7, score = 4800
            //   89442414             | mov                 dword ptr [esp + 0x14], eax
            //   e8????????           |                     
            //   84c0                 | test                al, al
            //   7407                 | je                  9
            //   c644240f01           | mov                 byte ptr [esp + 0xf], 1
            //   eb2f                 | jmp                 0x31
            //   8bcb                 | mov                 ecx, ebx

        $sequence_2 = { 5f 5e c20400 55 8bec 8b4d0c }
            // n = 6, score = 4800
            //   5f                   | pop                 edi
            //   5e                   | pop                 esi
            //   c20400               | ret                 4
            //   55                   | push                ebp
            //   8bec                 | mov                 ebp, esp
            //   8b4d0c               | mov                 ecx, dword ptr [ebp + 0xc]

        $sequence_3 = { 50 e8???????? 6a44 5a 52 }
            // n = 5, score = 4800
            //   50                   | push                eax
            //   e8????????           |                     
            //   6a44                 | push                0x44
            //   5a                   | pop                 edx
            //   52                   | push                edx

        $sequence_4 = { 6a00 e8???????? 8bf8 85ff 7437 8d75f0 83c8ff }
            // n = 7, score = 4800
            //   6a00                 | push                0
            //   e8????????           |                     
            //   8bf8                 | mov                 edi, eax
            //   85ff                 | test                edi, edi
            //   7437                 | je                  0x39
            //   8d75f0               | lea                 esi, [ebp - 0x10]
            //   83c8ff               | or                  eax, 0xffffffff

        $sequence_5 = { 8d7c0201 8bc7 e8???????? 8b1d???????? 8bf0 }
            // n = 5, score = 4800
            //   8d7c0201             | lea                 edi, [edx + eax + 1]
            //   8bc7                 | mov                 eax, edi
            //   e8????????           |                     
            //   8b1d????????         |                     
            //   8bf0                 | mov                 esi, eax

        $sequence_6 = { e8???????? 5d ff25???????? 55 8bec ff7508 e8???????? }
            // n = 7, score = 4800
            //   e8????????           |                     
            //   5d                   | pop                 ebp
            //   ff25????????         |                     
            //   55                   | push                ebp
            //   8bec                 | mov                 ebp, esp
            //   ff7508               | push                dword ptr [ebp + 8]
            //   e8????????           |                     

        $sequence_7 = { c745fc00040000 e8???????? 84c0 750f }
            // n = 4, score = 4800
            //   c745fc00040000       | mov                 dword ptr [ebp - 4], 0x400
            //   e8????????           |                     
            //   84c0                 | test                al, al
            //   750f                 | jne                 0x11

        $sequence_8 = { 6a01 57 57 8bc6 50 }
            // n = 5, score = 4800
            //   6a01                 | push                1
            //   57                   | push                edi
            //   57                   | push                edi
            //   8bc6                 | mov                 eax, esi
            //   50                   | push                eax

        $sequence_9 = { 53 53 8d450c 50 57 }
            // n = 5, score = 4800
            //   53                   | push                ebx
            //   53                   | push                ebx
            //   8d450c               | lea                 eax, [ebp + 0xc]
            //   50                   | push                eax
            //   57                   | push                edi

        $sequence_10 = { ff742410 e8???????? 5f 5e 5b 8be5 }
            // n = 6, score = 4800
            //   ff742410             | push                dword ptr [esp + 0x10]
            //   e8????????           |                     
            //   5f                   | pop                 edi
            //   5e                   | pop                 esi
            //   5b                   | pop                 ebx
            //   8be5                 | mov                 esp, ebp

        $sequence_11 = { e8???????? ff74241c e8???????? 807c240f00 750e ff742410 e8???????? }
            // n = 7, score = 4800
            //   e8????????           |                     
            //   ff74241c             | push                dword ptr [esp + 0x1c]
            //   e8????????           |                     
            //   807c240f00           | cmp                 byte ptr [esp + 0xf], 0
            //   750e                 | jne                 0x10
            //   ff742410             | push                dword ptr [esp + 0x10]
            //   e8????????           |                     

        $sequence_12 = { 8d440810 3d00002003 7715 8b4d08 }
            // n = 4, score = 4800
            //   8d440810             | lea                 eax, [eax + ecx + 0x10]
            //   3d00002003           | cmp                 eax, 0x3200000
            //   7715                 | ja                  0x17
            //   8b4d08               | mov                 ecx, dword ptr [ebp + 8]

        $sequence_13 = { 8b4508 6a03 e8???????? 894508 85c0 75d2 8d041f }
            // n = 7, score = 4800
            //   8b4508               | mov                 eax, dword ptr [ebp + 8]
            //   6a03                 | push                3
            //   e8????????           |                     
            //   894508               | mov                 dword ptr [ebp + 8], eax
            //   85c0                 | test                eax, eax
            //   75d2                 | jne                 0xffffffd4
            //   8d041f               | lea                 eax, [edi + ebx]

        $sequence_14 = { 6a01 8bc6 e8???????? 8b4d08 8bd8 e8???????? }
            // n = 6, score = 4800
            //   6a01                 | push                1
            //   8bc6                 | mov                 eax, esi
            //   e8????????           |                     
            //   8b4d08               | mov                 ecx, dword ptr [ebp + 8]
            //   8bd8                 | mov                 ebx, eax
            //   e8????????           |                     

        $sequence_15 = { 8a5602 8b4e10 8a5e14 fec8 32d0 8ac2 3245fe }
            // n = 7, score = 3700
            //   8a5602               | mov                 dl, byte ptr [esi + 2]
            //   8b4e10               | mov                 ecx, dword ptr [esi + 0x10]
            //   8a5e14               | mov                 bl, byte ptr [esi + 0x14]
            //   fec8                 | dec                 al
            //   32d0                 | xor                 dl, al
            //   8ac2                 | mov                 al, dl
            //   3245fe               | xor                 al, byte ptr [ebp - 2]

        $sequence_16 = { 0f8417010000 85ff 0f84dd000000 53 }
            // n = 4, score = 3700
            //   0f8417010000         | je                  0x11d
            //   85ff                 | test                edi, edi
            //   0f84dd000000         | je                  0xe3
            //   53                   | push                ebx

        $sequence_17 = { 73fa 0fb6c9 8b04c8 ebae 32c0 5f c9 }
            // n = 7, score = 3700
            //   73fa                 | jae                 0xfffffffc
            //   0fb6c9               | movzx               ecx, cl
            //   8b04c8               | mov                 eax, dword ptr [eax + ecx*8]
            //   ebae                 | jmp                 0xffffffb0
            //   32c0                 | xor                 al, al
            //   5f                   | pop                 edi
            //   c9                   | leave               

        $sequence_18 = { 8b44c104 e9???????? d0e9 3aca 73fa 0fb6c9 }
            // n = 6, score = 3700
            //   8b44c104             | mov                 eax, dword ptr [ecx + eax*8 + 4]
            //   e9????????           |                     
            //   d0e9                 | shr                 cl, 1
            //   3aca                 | cmp                 cl, dl
            //   73fa                 | jae                 0xfffffffc
            //   0fb6c9               | movzx               ecx, cl

        $sequence_19 = { 8a4e09 8a5614 85c0 7404 }
            // n = 4, score = 3700
            //   8a4e09               | mov                 cl, byte ptr [esi + 9]
            //   8a5614               | mov                 dl, byte ptr [esi + 0x14]
            //   85c0                 | test                eax, eax
            //   7404                 | je                  6

        $sequence_20 = { 85f6 0f842b010000 837e1000 0f8421010000 807e1400 }
            // n = 5, score = 3700
            //   85f6                 | test                esi, esi
            //   0f842b010000         | je                  0x131
            //   837e1000             | cmp                 dword ptr [esi + 0x10], 0
            //   0f8421010000         | je                  0x127
            //   807e1400             | cmp                 byte ptr [esi + 0x14], 0

        $sequence_21 = { 33c0 85c0 740b 8a5604 8a4e01 ffd0 }
            // n = 6, score = 3700
            //   33c0                 | xor                 eax, eax
            //   85c0                 | test                eax, eax
            //   740b                 | je                  0xd
            //   8a5604               | mov                 dl, byte ptr [esi + 4]
            //   8a4e01               | mov                 cl, byte ptr [esi + 1]
            //   ffd0                 | call                eax

        $sequence_22 = { 66ff460c 6639460c 7228 8b4610 8a4e05 8a5614 85c0 }
            // n = 7, score = 3700
            //   66ff460c             | inc                 word ptr [esi + 0xc]
            //   6639460c             | cmp                 word ptr [esi + 0xc], ax
            //   7228                 | jb                  0x2a
            //   8b4610               | mov                 eax, dword ptr [esi + 0x10]
            //   8a4e05               | mov                 cl, byte ptr [esi + 5]
            //   8a5614               | mov                 dl, byte ptr [esi + 0x14]
            //   85c0                 | test                eax, eax

    condition:
        7 of them and filesize < 1236992
}
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