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 (20201014 | autogenerated rule brought to you by yara-signator)
rule win_icefog_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2020-10-14"
        version = "1"
        description = "autogenerated rule brought to you by yara-signator"
        tool = "yara-signator v0.5.0"
        tool_config = "callsandjumps;datarefs;binvalue"
        malpedia_reference = "https://malpedia.caad.fkie.fraunhofer.de/details/win.icefog"
        malpedia_rule_date = "20201014"
        malpedia_hash = "a7e3bd57eaf12bf3ea29a863c041091ba3af9ac9"
        malpedia_version = "20201014"
        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 = { 8b4608 5e 5d c3 c6461801 5e 5d }
            // n = 7, score = 200
            //   8b4608               | mov                 eax, dword ptr [esi + 8]
            //   5e                   | pop                 esi
            //   5d                   | pop                 ebp
            //   c3                   | ret                 
            //   c6461801             | mov                 byte ptr [esi + 0x18], 1
            //   5e                   | pop                 esi
            //   5d                   | pop                 ebp

        $sequence_1 = { c745d801000000 8945c0 8b4d08 8b55d4 890cb2 3b730c 7c34 }
            // n = 7, score = 200
            //   c745d801000000       | mov                 dword ptr [ebp - 0x28], 1
            //   8945c0               | mov                 dword ptr [ebp - 0x40], eax
            //   8b4d08               | mov                 ecx, dword ptr [ebp + 8]
            //   8b55d4               | mov                 edx, dword ptr [ebp - 0x2c]
            //   890cb2               | mov                 dword ptr [edx + esi*4], ecx
            //   3b730c               | cmp                 esi, dword ptr [ebx + 0xc]
            //   7c34                 | jl                  0x36

        $sequence_2 = { 898578ffffff 8d4702 50 56 897d8c 898d68ffffff 895598 }
            // n = 7, score = 200
            //   898578ffffff         | mov                 dword ptr [ebp - 0x88], eax
            //   8d4702               | lea                 eax, [edi + 2]
            //   50                   | push                eax
            //   56                   | push                esi
            //   897d8c               | mov                 dword ptr [ebp - 0x74], edi
            //   898d68ffffff         | mov                 dword ptr [ebp - 0x98], ecx
            //   895598               | mov                 dword ptr [ebp - 0x68], edx

        $sequence_3 = { 8b5114 6a00 57 50 0fb64249 50 56 }
            // n = 7, score = 200
            //   8b5114               | mov                 edx, dword ptr [ecx + 0x14]
            //   6a00                 | push                0
            //   57                   | push                edi
            //   50                   | push                eax
            //   0fb64249             | movzx               eax, byte ptr [edx + 0x49]
            //   50                   | push                eax
            //   56                   | push                esi

        $sequence_4 = { 8d8ddcfeffff 51 6819000200 6a00 8d55e4 52 6800000080 }
            // n = 7, score = 200
            //   8d8ddcfeffff         | lea                 ecx, [ebp - 0x124]
            //   51                   | push                ecx
            //   6819000200           | push                0x20019
            //   6a00                 | push                0
            //   8d55e4               | lea                 edx, [ebp - 0x1c]
            //   52                   | push                edx
            //   6800000080           | push                0x80000000

        $sequence_5 = { 83c410 5f 5e 8be5 5d c3 8b4d20 }
            // n = 7, score = 200
            //   83c410               | add                 esp, 0x10
            //   5f                   | pop                 edi
            //   5e                   | pop                 esi
            //   8be5                 | mov                 esp, ebp
            //   5d                   | pop                 ebp
            //   c3                   | ret                 
            //   8b4d20               | mov                 ecx, dword ptr [ebp + 0x20]

        $sequence_6 = { 90 8b45fc 6a00 50 e8???????? 83c408 e8???????? }
            // n = 7, score = 200
            //   90                   | nop                 
            //   8b45fc               | mov                 eax, dword ptr [ebp - 4]
            //   6a00                 | push                0
            //   50                   | push                eax
            //   e8????????           |                     
            //   83c408               | add                 esp, 8
            //   e8????????           |                     

        $sequence_7 = { 8b4e0c 57 83c608 50 51 6a00 53 }
            // n = 7, score = 200
            //   8b4e0c               | mov                 ecx, dword ptr [esi + 0xc]
            //   57                   | push                edi
            //   83c608               | add                 esi, 8
            //   50                   | push                eax
            //   51                   | push                ecx
            //   6a00                 | push                0
            //   53                   | push                ebx

        $sequence_8 = { 8bd8 83c414 85db 0f85cd020000 8b7ddc 8b4f44 51 }
            // n = 7, score = 200
            //   8bd8                 | mov                 ebx, eax
            //   83c414               | add                 esp, 0x14
            //   85db                 | test                ebx, ebx
            //   0f85cd020000         | jne                 0x2d3
            //   8b7ddc               | mov                 edi, dword ptr [ebp - 0x24]
            //   8b4f44               | mov                 ecx, dword ptr [edi + 0x44]
            //   51                   | push                ecx

        $sequence_9 = { 8b450c 81e17fc01f00 c1e207 0bca 8908 c7400400000000 b004 }
            // n = 7, score = 200
            //   8b450c               | mov                 eax, dword ptr [ebp + 0xc]
            //   81e17fc01f00         | and                 ecx, 0x1fc07f
            //   c1e207               | shl                 edx, 7
            //   0bca                 | or                  ecx, edx
            //   8908                 | mov                 dword ptr [eax], ecx
            //   c7400400000000       | mov                 dword ptr [eax + 4], 0
            //   b004                 | mov                 al, 4

    condition:
        7 of them and filesize < 1187840
}
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