SYMBOLCOMMON_NAMEaka. SYNONYMS
win.sodamaster (Back to overview)

SodaMaster

aka: dfls, HEAVYPOT, DelfsCake

Actor(s): Stone Panda


This is a RAT that is usually loaded with one or more shellcode and/or reflective DLL injection techniques. The RAT uses RC4 or a hardcoded RSA key for traffic encryption/decryption. Its communication can either happen via a raw TCP socket or a HTTP POST request. Depending on the version, the RAT may remotely execute DLLs or shellcode.

References
2022-06-23SecureworksCounter Threat Unit ResearchTeam
@online{researchteam:20220623:bronze:8bccd74, author = {Counter Threat Unit ResearchTeam}, title = {{BRONZE STARLIGHT Ransomware Operations Use HUI Loader}}, date = {2022-06-23}, organization = {Secureworks}, url = {https://www.secureworks.com/research/bronze-starlight-ransomware-operations-use-hui-loader}, language = {English}, urldate = {2022-09-20} } BRONZE STARLIGHT Ransomware Operations Use HUI Loader
ATOMSILO Cobalt Strike HUI Loader LockFile NightSky Pandora PlugX Quasar RAT Rook SodaMaster
2022-04-05SymantecThreat Hunter Team
@online{team:20220405:cicada:67f6b8c, author = {Threat Hunter Team}, title = {{Cicada: Chinese APT Group Widens Targeting in Recent Espionage Activity}}, date = {2022-04-05}, organization = {Symantec}, url = {https://symantec-enterprise-blogs.security.com/blogs/threat-intelligence/cicada-apt10-china-ngo-government-attacks}, language = {English}, urldate = {2022-04-07} } Cicada: Chinese APT Group Widens Targeting in Recent Espionage Activity
MimiKatz SodaMaster
2022-04-05Bleeping ComputerIonut Ilascu
@online{ilascu:20220405:chinese:1774637, author = {Ionut Ilascu}, title = {{Chinese hackers abuse VLC Media Player to launch malware loader}}, date = {2022-04-05}, organization = {Bleeping Computer}, url = {https://www.bleepingcomputer.com/news/security/chinese-hackers-abuse-vlc-media-player-to-launch-malware-loader/}, language = {English}, urldate = {2022-04-07} } Chinese hackers abuse VLC Media Player to launch malware loader
SodaMaster
2022-01-27JSAC 2021Hajime Yanagishita, Kiyotaka Tamada, You Nakatsuru, Suguru Ishimaru
@techreport{yanagishita:20220127:what:3c59dc9, author = {Hajime Yanagishita and Kiyotaka Tamada and You Nakatsuru and Suguru Ishimaru}, title = {{What We Can Do against the Chaotic A41APT Campaign}}, date = {2022-01-27}, institution = {JSAC 2021}, url = {https://jsac.jpcert.or.jp/archive/2022/pdf/JSAC2022_9_yanagishita-tamada-nakatsuru-ishimaru_en.pdf}, language = {English}, urldate = {2022-05-17} } What We Can Do against the Chaotic A41APT Campaign
CHINACHOPPER Cobalt Strike HUI Loader SodaMaster
2021-04-27KasperskyGReAT
@online{great:20210427:trends:e1c92a3, author = {GReAT}, title = {{APT trends report Q1 2021}}, date = {2021-04-27}, organization = {Kaspersky}, url = {https://securelist.com/apt-trends-report-q1-2021/101967/}, language = {English}, urldate = {2021-04-29} } APT trends report Q1 2021
PAS Artra Downloader BadNews Bozok DILLJUICE Kazuar Quasar RAT SodaMaster
2021-02-24Yusuke Niwa, Motohiko Sato, Hajime Yanagishita, Charles Li, Suguru Ishimaru
@techreport{niwa:20210224:a41apt:d20a784, author = {Yusuke Niwa and Motohiko Sato and Hajime Yanagishita and Charles Li and Suguru Ishimaru}, title = {{A41APT case - Analysis of the Stealth APT Campaign Threatening Japan}}, date = {2021-02-24}, institution = {}, url = {https://jsac.jpcert.or.jp/archive/2021/pdf/JSAC2021_202_niwa-yanagishita_en.pdf}, language = {English}, urldate = {2021-02-26} } A41APT case - Analysis of the Stealth APT Campaign Threatening Japan
SodaMaster
Yara Rules
[TLP:WHITE] win_sodamaster_auto (20221125 | Detects win.sodamaster.)
rule win_sodamaster_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2022-11-21"
        version = "1"
        description = "Detects win.sodamaster."
        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.sodamaster"
        malpedia_rule_date = "20221118"
        malpedia_hash = "e0702e2e6d1d00da65c8a29a4ebacd0a4c59e1af"
        malpedia_version = "20221125"
        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 = { 56 e8???????? eb0a 46 8d43fb 56 e8???????? }
            // n = 7, score = 100
            //   56                   | push                esi
            //   e8????????           |                     
            //   eb0a                 | jmp                 0xc
            //   46                   | inc                 esi
            //   8d43fb               | lea                 eax, [ebx - 5]
            //   56                   | push                esi
            //   e8????????           |                     

        $sequence_1 = { 85c0 0f8409010000 8b8decefffff 8b95e4efffff 8d85e8efffff 50 53 }
            // n = 7, score = 100
            //   85c0                 | test                eax, eax
            //   0f8409010000         | je                  0x10f
            //   8b8decefffff         | mov                 ecx, dword ptr [ebp - 0x1014]
            //   8b95e4efffff         | mov                 edx, dword ptr [ebp - 0x101c]
            //   8d85e8efffff         | lea                 eax, [ebp - 0x1018]
            //   50                   | push                eax
            //   53                   | push                ebx

        $sequence_2 = { 56 53 e8???????? 8d45e8 83c414 8bf0 }
            // n = 6, score = 100
            //   56                   | push                esi
            //   53                   | push                ebx
            //   e8????????           |                     
            //   8d45e8               | lea                 eax, [ebp - 0x18]
            //   83c414               | add                 esp, 0x14
            //   8bf0                 | mov                 esi, eax

        $sequence_3 = { 8bf2 f3a5 8bc8 83e103 f3a4 8d8d24ffffff }
            // n = 6, score = 100
            //   8bf2                 | mov                 esi, edx
            //   f3a5                 | rep movsd           dword ptr es:[edi], dword ptr [esi]
            //   8bc8                 | mov                 ecx, eax
            //   83e103               | and                 ecx, 3
            //   f3a4                 | rep movsb           byte ptr es:[edi], byte ptr [esi]
            //   8d8d24ffffff         | lea                 ecx, [ebp - 0xdc]

        $sequence_4 = { 50 ff15???????? a3???????? 85c0 7415 8b45c4 3945c8 }
            // n = 7, score = 100
            //   50                   | push                eax
            //   ff15????????         |                     
            //   a3????????           |                     
            //   85c0                 | test                eax, eax
            //   7415                 | je                  0x17
            //   8b45c4               | mov                 eax, dword ptr [ebp - 0x3c]
            //   3945c8               | cmp                 dword ptr [ebp - 0x38], eax

        $sequence_5 = { e8???????? 8b4ddc 57 8bf0 51 }
            // n = 5, score = 100
            //   e8????????           |                     
            //   8b4ddc               | mov                 ecx, dword ptr [ebp - 0x24]
            //   57                   | push                edi
            //   8bf0                 | mov                 esi, eax
            //   51                   | push                ecx

        $sequence_6 = { c745d072006e00 c745d66c003300 c745da32002e00 c745de64006c00 c745e26c000000 c745e849734465 c745ec62756767 }
            // n = 7, score = 100
            //   c745d072006e00       | mov                 dword ptr [ebp - 0x30], 0x6e0072
            //   c745d66c003300       | mov                 dword ptr [ebp - 0x2a], 0x33006c
            //   c745da32002e00       | mov                 dword ptr [ebp - 0x26], 0x2e0032
            //   c745de64006c00       | mov                 dword ptr [ebp - 0x22], 0x6c0064
            //   c745e26c000000       | mov                 dword ptr [ebp - 0x1e], 0x6c
            //   c745e849734465       | mov                 dword ptr [ebp - 0x18], 0x65447349
            //   c745ec62756767       | mov                 dword ptr [ebp - 0x14], 0x67677562

        $sequence_7 = { 750d 8b4db8 51 8d7001 }
            // n = 4, score = 100
            //   750d                 | jne                 0xf
            //   8b4db8               | mov                 ecx, dword ptr [ebp - 0x48]
            //   51                   | push                ecx
            //   8d7001               | lea                 esi, [eax + 1]

        $sequence_8 = { 8945f4 8945f0 e8???????? 8b5df0 8bc3 8d5001 }
            // n = 6, score = 100
            //   8945f4               | mov                 dword ptr [ebp - 0xc], eax
            //   8945f0               | mov                 dword ptr [ebp - 0x10], eax
            //   e8????????           |                     
            //   8b5df0               | mov                 ebx, dword ptr [ebp - 0x10]
            //   8bc3                 | mov                 eax, ebx
            //   8d5001               | lea                 edx, [eax + 1]

        $sequence_9 = { ffd7 85c0 0f8495000000 83bd14fbffff54 757b 8b0d???????? a1???????? }
            // n = 7, score = 100
            //   ffd7                 | call                edi
            //   85c0                 | test                eax, eax
            //   0f8495000000         | je                  0x9b
            //   83bd14fbffff54       | cmp                 dword ptr [ebp - 0x4ec], 0x54
            //   757b                 | jne                 0x7d
            //   8b0d????????         |                     
            //   a1????????           |                     

    condition:
        7 of them and filesize < 134144
}
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