SYMBOLCOMMON_NAMEaka. SYNONYMS
win.icefog (Back to overview)

Icefog

aka: Fucobha

There is no description at this point.

References
2020-01-29nao_sec blognao_sec
@online{naosec:20200129:overhead:ec0aeb5, author = {nao_sec}, title = {{An Overhead View of the Royal Road}}, date = {2020-01-29}, organization = {nao_sec blog}, url = {https://nao-sec.org/2020/01/an-overhead-view-of-the-royal-road.html}, language = {English}, urldate = {2020-02-03} } An Overhead View of the Royal Road
BLACKCOFFEE Cotx RAT Datper DDKONG Derusbi Icefog Korlia NewCore RAT PLAINTEE Poison Ivy Sisfader
2019-12-12FireEyeChi-en Shen, Oleg Bondarenko
@online{shen:20191212:cyber:e01baca, author = {Chi-en Shen and Oleg Bondarenko}, title = {{Cyber Threat Landscape in Japan – Revealing Threat in the Shadow}}, date = {2019-12-12}, organization = {FireEye}, url = {https://www.slideshare.net/codeblue_jp/cb19-cyber-threat-landscape-in-japan-revealing-threat-in-the-shadow-by-chi-en-shen-ashley-oleg-bondarenko}, language = {English}, urldate = {2020-04-16} } Cyber Threat Landscape in Japan – Revealing Threat in the Shadow
Cerberus TSCookie Cobalt Strike Dtrack Emotet Formbook IcedID Icefog IRONHALO Loki Password Stealer (PWS) PandaBanker PLEAD poisonplug TrickBot BlackTech
2019-06-03FireEyeChi-en Shen
@online{shen:20190603:into:d40fee9, author = {Chi-en Shen}, title = {{Into the Fog - The Return of ICEFOG APT}}, date = {2019-06-03}, organization = {FireEye}, url = {https://speakerdeck.com/ashley920/into-the-fog-the-return-of-icefog-apt}, language = {English}, urldate = {2020-06-30} } Into the Fog - The Return of ICEFOG APT
Icefog PlugX Sarhust
2016-09-06KZ CERTKZ CERT
@online{cert:20160906:kzcert:3d8bb82, author = {KZ CERT}, title = {{KZ-CERT has analyzed another sample of malicious software, which is a component of targeted attacks (Targeted attacks, Advanced Persistent Threats (APT))}}, date = {2016-09-06}, organization = {KZ CERT}, url = {http://www.kz-cert.kz/page/502}, language = {Kazakh}, urldate = {2019-10-16} } KZ-CERT has analyzed another sample of malicious software, which is a component of targeted attacks (Targeted attacks, Advanced Persistent Threats (APT))
Icefog
Yara Rules
[TLP:WHITE] win_icefog_auto (20200529 | autogenerated rule brought to you by yara-signator)
rule win_icefog_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2020-05-30"
        version = "1"
        description = "autogenerated rule brought to you by yara-signator"
        tool = "yara-signator v0.4.0"
        tool_config = "callsandjumps;datarefs;binvalue"
        malpedia_reference = "https://malpedia.caad.fkie.fraunhofer.de/details/win.icefog"
        malpedia_rule_date = "20200529"
        malpedia_hash = "92c362319514e5a6da26204961446caa3a8b32a8"
        malpedia_version = "20200529"
        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 / approach 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 = { e8???????? 8b464c 85c0 7505 8d7807 eb27 0fb78d20ffffff }
            // n = 7, score = 200
            //   e8????????           |                     
            //   8b464c               | mov                 eax, dword ptr [esi + 0x4c]
            //   85c0                 | test                eax, eax
            //   7505                 | jne                 7
            //   8d7807               | lea                 edi, [eax + 7]
            //   eb27                 | jmp                 0x29
            //   0fb78d20ffffff       | movzx               ecx, word ptr [ebp - 0xe0]

        $sequence_1 = { c3 8d4dc8 51 e8???????? 83c404 b80b000000 5f }
            // n = 7, score = 200
            //   c3                   | ret                 
            //   8d4dc8               | lea                 ecx, [ebp - 0x38]
            //   51                   | push                ecx
            //   e8????????           |                     
            //   83c404               | add                 esp, 4
            //   b80b000000           | mov                 eax, 0xb
            //   5f                   | pop                 edi

        $sequence_2 = { e8???????? 8b450c 8b0f 50 51 e8???????? 56 }
            // n = 7, score = 200
            //   e8????????           |                     
            //   8b450c               | mov                 eax, dword ptr [ebp + 0xc]
            //   8b0f                 | mov                 ecx, dword ptr [edi]
            //   50                   | push                eax
            //   51                   | push                ecx
            //   e8????????           |                     
            //   56                   | push                esi

        $sequence_3 = { 8d45e4 50 e8???????? 83c408 85c0 0f8527010000 80bb8000000000 }
            // n = 7, score = 200
            //   8d45e4               | lea                 eax, [ebp - 0x1c]
            //   50                   | push                eax
            //   e8????????           |                     
            //   83c408               | add                 esp, 8
            //   85c0                 | test                eax, eax
            //   0f8527010000         | jne                 0x12d
            //   80bb8000000000       | cmp                 byte ptr [ebx + 0x80], 0

        $sequence_4 = { 895df4 8b4df0 51 68???????? 53 8d55b4 56 }
            // n = 7, score = 200
            //   895df4               | mov                 dword ptr [ebp - 0xc], ebx
            //   8b4df0               | mov                 ecx, dword ptr [ebp - 0x10]
            //   51                   | push                ecx
            //   68????????           |                     
            //   53                   | push                ebx
            //   8d55b4               | lea                 edx, [ebp - 0x4c]
            //   56                   | push                esi

        $sequence_5 = { eb08 dec9 eb04 ddd9 ddd8 837dfc00 5e }
            // n = 7, score = 200
            //   eb08                 | jmp                 0xa
            //   dec9                 | fmulp               st(1)
            //   eb04                 | jmp                 6
            //   ddd9                 | fstp                st(1)
            //   ddd8                 | fstp                st(0)
            //   837dfc00             | cmp                 dword ptr [ebp - 4], 0
            //   5e                   | pop                 esi

        $sequence_6 = { c745e400000000 c745e000000000 85db 0f8485010000 8d9b00000000 0fb65308 8b4d10 }
            // n = 7, score = 200
            //   c745e400000000       | mov                 dword ptr [ebp - 0x1c], 0
            //   c745e000000000       | mov                 dword ptr [ebp - 0x20], 0
            //   85db                 | test                ebx, ebx
            //   0f8485010000         | je                  0x18b
            //   8d9b00000000         | lea                 ebx, [ebx]
            //   0fb65308             | movzx               edx, byte ptr [ebx + 8]
            //   8b4d10               | mov                 ecx, dword ptr [ebp + 0x10]

        $sequence_7 = { c3 8b0e 85c9 7512 33ff 8bf2 e8???????? }
            // n = 7, score = 200
            //   c3                   | ret                 
            //   8b0e                 | mov                 ecx, dword ptr [esi]
            //   85c9                 | test                ecx, ecx
            //   7512                 | jne                 0x14
            //   33ff                 | xor                 edi, edi
            //   8bf2                 | mov                 esi, edx
            //   e8????????           |                     

        $sequence_8 = { 8b85f4feffff 898dd0feffff eb07 c7043000000000 83c604 ff8d30ffffff 758e }
            // n = 7, score = 200
            //   8b85f4feffff         | mov                 eax, dword ptr [ebp - 0x10c]
            //   898dd0feffff         | mov                 dword ptr [ebp - 0x130], ecx
            //   eb07                 | jmp                 9
            //   c7043000000000       | mov                 dword ptr [eax + esi], 0
            //   83c604               | add                 esi, 4
            //   ff8d30ffffff         | dec                 dword ptr [ebp - 0xd0]
            //   758e                 | jne                 0xffffff90

        $sequence_9 = { 8bec 8b5510 8b4508 8b08 52 8b550c 52 }
            // n = 7, score = 200
            //   8bec                 | mov                 ebp, esp
            //   8b5510               | mov                 edx, dword ptr [ebp + 0x10]
            //   8b4508               | mov                 eax, dword ptr [ebp + 8]
            //   8b08                 | mov                 ecx, dword ptr [eax]
            //   52                   | push                edx
            //   8b550c               | mov                 edx, dword ptr [ebp + 0xc]
            //   52                   | push                edx

    condition:
        7 of them and filesize < 1187840
}
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