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 (20201023 | autogenerated rule brought to you by yara-signator)
rule win_icefog_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.icefog"
        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 = { d1e8 2bc3 034604 83e101 03c0 33c1 895de0 }
            // n = 7, score = 200
            //   d1e8                 | shr                 eax, 1
            //   2bc3                 | sub                 eax, ebx
            //   034604               | add                 eax, dword ptr [esi + 4]
            //   83e101               | and                 ecx, 1
            //   03c0                 | add                 eax, eax
            //   33c1                 | xor                 eax, ecx
            //   895de0               | mov                 dword ptr [ebp - 0x20], ebx

        $sequence_1 = { 53 e8???????? 83c410 eb1e 8b5598 8b45dc 8b4db4 }
            // n = 7, score = 200
            //   53                   | push                ebx
            //   e8????????           |                     
            //   83c410               | add                 esp, 0x10
            //   eb1e                 | jmp                 0x20
            //   8b5598               | mov                 edx, dword ptr [ebp - 0x68]
            //   8b45dc               | mov                 eax, dword ptr [ebp - 0x24]
            //   8b4db4               | mov                 ecx, dword ptr [ebp - 0x4c]

        $sequence_2 = { e8???????? 6a01 6a01 e8???????? 83c410 8bc6 5e }
            // n = 7, score = 200
            //   e8????????           |                     
            //   6a01                 | push                1
            //   6a01                 | push                1
            //   e8????????           |                     
            //   83c410               | add                 esp, 0x10
            //   8bc6                 | mov                 eax, esi
            //   5e                   | pop                 esi

        $sequence_3 = { 8b764c 8b7f08 8d0480 8d1cc6 8d14bf 8d34d6 898d1cffffff }
            // n = 7, score = 200
            //   8b764c               | mov                 esi, dword ptr [esi + 0x4c]
            //   8b7f08               | mov                 edi, dword ptr [edi + 8]
            //   8d0480               | lea                 eax, [eax + eax*4]
            //   8d1cc6               | lea                 ebx, [esi + eax*8]
            //   8d14bf               | lea                 edx, [edi + edi*4]
            //   8d34d6               | lea                 esi, [esi + edx*8]
            //   898d1cffffff         | mov                 dword ptr [ebp - 0xe4], ecx

        $sequence_4 = { e8???????? eb54 8bf1 0bf3 0f8471010000 8bf1 23f3 }
            // n = 7, score = 200
            //   e8????????           |                     
            //   eb54                 | jmp                 0x56
            //   8bf1                 | mov                 esi, ecx
            //   0bf3                 | or                  esi, ebx
            //   0f8471010000         | je                  0x177
            //   8bf1                 | mov                 esi, ecx
            //   23f3                 | and                 esi, ebx

        $sequence_5 = { 8d46c4 50 53 895de0 e8???????? 83c418 837ee400 }
            // n = 7, score = 200
            //   8d46c4               | lea                 eax, [esi - 0x3c]
            //   50                   | push                eax
            //   53                   | push                ebx
            //   895de0               | mov                 dword ptr [ebp - 0x20], ebx
            //   e8????????           |                     
            //   83c418               | add                 esp, 0x18
            //   837ee400             | cmp                 dword ptr [esi - 0x1c], 0

        $sequence_6 = { e8???????? 83c404 eb2e 0fb6460b f7d8 1bc0 }
            // n = 6, score = 200
            //   e8????????           |                     
            //   83c404               | add                 esp, 4
            //   eb2e                 | jmp                 0x30
            //   0fb6460b             | movzx               eax, byte ptr [esi + 0xb]
            //   f7d8                 | neg                 eax
            //   1bc0                 | sbb                 eax, eax

        $sequence_7 = { 8bec 51 8b412c 8b497c 53 57 81c138ffffff }
            // n = 7, score = 200
            //   8bec                 | mov                 ebp, esp
            //   51                   | push                ecx
            //   8b412c               | mov                 eax, dword ptr [ecx + 0x2c]
            //   8b497c               | mov                 ecx, dword ptr [ecx + 0x7c]
            //   53                   | push                ebx
            //   57                   | push                edi
            //   81c138ffffff         | add                 ecx, 0xffffff38

        $sequence_8 = { 8b4748 50 53 e8???????? 6a50 53 8945f4 }
            // n = 7, score = 200
            //   8b4748               | mov                 eax, dword ptr [edi + 0x48]
            //   50                   | push                eax
            //   53                   | push                ebx
            //   e8????????           |                     
            //   6a50                 | push                0x50
            //   53                   | push                ebx
            //   8945f4               | mov                 dword ptr [ebp - 0xc], eax

        $sequence_9 = { 895df4 753c 8b4670 8b0f 33d2 034650 135654 }
            // n = 7, score = 200
            //   895df4               | mov                 dword ptr [ebp - 0xc], ebx
            //   753c                 | jne                 0x3e
            //   8b4670               | mov                 eax, dword ptr [esi + 0x70]
            //   8b0f                 | mov                 ecx, dword ptr [edi]
            //   33d2                 | xor                 edx, edx
            //   034650               | add                 eax, dword ptr [esi + 0x50]
            //   135654               | adc                 edx, dword ptr [esi + 0x54]

    condition:
        7 of them and filesize < 1187840
}
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