SYMBOLCOMMON_NAMEaka. SYNONYMS
win.derusbi (Back to overview)

Derusbi

aka: PHOTO

Actor(s): APT41, APT17, Leviathan, Stone Panda

VTCollection    

A DLL backdoor also reported publicly as “Derusbi”, capable of obtaining directory, file, and drive listing; creating a reverse shell; performing screen captures; recording video and audio; listing, terminating, and creating processes; enumerating, starting, and deleting registry keys and values; logging keystrokes, returning usernames and passwords from protected storage; and renaming, deleting, copying, moving, reading, and writing to files.

References
2021-07-07 ⋅ Trend Micro ⋅ Gloria Chen, Jaromír Hořejší, Joseph C Chen, Kenney Lu
BIOPASS RAT: New Malware Sniffs Victims via Live Streaming
BIOPASS Cobalt Strike Derusbi
2020-12-26 ⋅ CYBER GEEKS All Things Infosec ⋅ CyberMasterV
Analyzing APT19 malware using a step-by-step method
Derusbi
2020-10-30 ⋅ YouTube (Kaspersky Tech) ⋅ Kris McConkey
Around the world in 80 days 4.2bn packets
Cobalt Strike Derusbi HyperBro Poison Ivy ShadowPad Winnti
2020-01-29 ⋅ nao_sec blog ⋅ nao_sec
An Overhead View of the Royal Road
BLACKCOFFEE Cotx RAT Datper DDKONG Derusbi Icefog Korlia NewCore RAT PLAINTEE Poison Ivy Sisfader
2020-01-01 ⋅ Secureworks ⋅ SecureWorks
BRONZE KEYSTONE
9002 RAT BLACKCOFFEE DeputyDog Derusbi HiKit PlugX Poison Ivy ZXShell APT17
2020-01-01 ⋅ Secureworks ⋅ SecureWorks
BRONZE MOHAWK
AIRBREAK scanbox BLACKCOFFEE CHINACHOPPER Cobalt Strike Derusbi homefry murkytop SeDll APT40
2020-01-01 ⋅ Secureworks ⋅ SecureWorks
BRONZE FIRESTONE
9002 RAT Derusbi Empire Downloader PlugX Poison Ivy APT19
2019-12-17 ⋅ Palo Alto Networks Unit 42 ⋅ Jen Miller-Osborn, Mike Harbison
Rancor: Cyber Espionage Group Uses New Custom Malware to Attack Southeast Asia
DDKONG Derusbi KHRAT
2019-11-19 ⋅ FireEye ⋅ Kelli Vanderlee, Nalani Fraser
Achievement Unlocked: Chinese Cyber Espionage Evolves to Support Higher Level Missions
MESSAGETAP TSCookie ACEHASH CHINACHOPPER Cobalt Strike Derusbi Empire Downloader Ghost RAT HIGHNOON HTran MimiKatz NetWire RC poisonplug Poison Ivy pupy Quasar RAT ZXShell
2019-09-23 ⋅ MITRE ⋅ MITRE ATT&CK
APT41
Derusbi MESSAGETAP Winnti ASPXSpy BLACKCOFFEE CHINACHOPPER Cobalt Strike Derusbi Empire Downloader Ghost RAT MimiKatz NjRAT PlugX ShadowPad Winnti ZXShell APT41
2017-05-31 ⋅ MITRE ⋅ MITRE ATT&CK
Axiom
Derusbi 9002 RAT BLACKCOFFEE Derusbi Ghost RAT HiKit PlugX ZXShell APT17
2016-03-02 ⋅ RSA Conference ⋅ Vanja Svajcer
Dissecting Derusbi
Derusbi
2015-12-15 ⋅ Airbus Defence & Space ⋅ Fabien Perigaud
Newcomers in the Derusbi family
Derusbi
2015-10-08 ⋅ Virus Bulletin ⋅ Eric Leung, Micky Pun, Neo Tan
Catching the silent whisper: Understanding the Derusbi family tree
Derusbi
2015-02-27 ⋅ ThreatConnect ⋅ ThreatConnect Research Team
The Anthem Hack: All Roads Lead to China
Derusbi
2015-02-06 ⋅ CrowdStrike ⋅ CrowdStrike
CrowdStrike Global Threat Intel Report 2014
BlackPOS CryptoLocker Derusbi Elise Enfal EvilGrab Gameover P2P HttpBrowser Medusa Mirage Naikon NetTraveler pirpi PlugX Poison Ivy Sakula RAT Sinowal sykipot taidoor
2014-10-28 ⋅ Novetta ⋅ Novetta
Derusbi (Server Variant) Analysis
Derusbi
2014-01-01 ⋅ RSA ⋅ RSA Research
RSA Incident Response: Emerging Threat Profile Shell_Crew
Derusbi
Yara Rules
[TLP:WHITE] win_derusbi_auto (20241030 | Detects win.derusbi.)
rule win_derusbi_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2024-10-31"
        version = "1"
        description = "Detects win.derusbi."
        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.derusbi"
        malpedia_rule_date = "20241030"
        malpedia_hash = "26e26953c49c8efafbf72a38076855d578e0a2e4"
        malpedia_version = "20241030"
        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 = { ff15???????? 48 48 7436 48 742c }
            // n = 6, score = 200
            //   ff15????????         |                     
            //   48                   | dec                 eax
            //   48                   | dec                 eax
            //   7436                 | je                  0x38
            //   48                   | dec                 eax
            //   742c                 | je                  0x2e

        $sequence_1 = { ffb5f4fbffff ffd6 85c0 7461 b800010000 8985e4fbffff 8985e8fbffff }
            // n = 7, score = 200
            //   ffb5f4fbffff         | push                dword ptr [ebp - 0x40c]
            //   ffd6                 | call                esi
            //   85c0                 | test                eax, eax
            //   7461                 | je                  0x63
            //   b800010000           | mov                 eax, 0x100
            //   8985e4fbffff         | mov                 dword ptr [ebp - 0x41c], eax
            //   8985e8fbffff         | mov                 dword ptr [ebp - 0x418], eax

        $sequence_2 = { 53 be???????? 8dbda8f1ffff 50 f3a5 e8???????? 899d28f2ffff }
            // n = 7, score = 200
            //   53                   | push                ebx
            //   be????????           |                     
            //   8dbda8f1ffff         | lea                 edi, [ebp - 0xe58]
            //   50                   | push                eax
            //   f3a5                 | rep movsd           dword ptr es:[edi], dword ptr [esi]
            //   e8????????           |                     
            //   899d28f2ffff         | mov                 dword ptr [ebp - 0xdd8], ebx

        $sequence_3 = { 8b800c010000 c3 83790405 750e 83790800 7408 8b81a0000000 }
            // n = 7, score = 200
            //   8b800c010000         | mov                 eax, dword ptr [eax + 0x10c]
            //   c3                   | ret                 
            //   83790405             | cmp                 dword ptr [ecx + 4], 5
            //   750e                 | jne                 0x10
            //   83790800             | cmp                 dword ptr [ecx + 8], 0
            //   7408                 | je                  0xa
            //   8b81a0000000         | mov                 eax, dword ptr [ecx + 0xa0]

        $sequence_4 = { 89442434 e8???????? 39442434 7467 68a4000000 ff15???????? 8bf0 }
            // n = 7, score = 200
            //   89442434             | mov                 dword ptr [esp + 0x34], eax
            //   e8????????           |                     
            //   39442434             | cmp                 dword ptr [esp + 0x34], eax
            //   7467                 | je                  0x69
            //   68a4000000           | push                0xa4
            //   ff15????????         |                     
            //   8bf0                 | mov                 esi, eax

        $sequence_5 = { 8d85b4fdffff 53 50 c685fcfeffff00 c6857cffffff00 c6857cfeffff00 ffd6 }
            // n = 7, score = 200
            //   8d85b4fdffff         | lea                 eax, [ebp - 0x24c]
            //   53                   | push                ebx
            //   50                   | push                eax
            //   c685fcfeffff00       | mov                 byte ptr [ebp - 0x104], 0
            //   c6857cffffff00       | mov                 byte ptr [ebp - 0x84], 0
            //   c6857cfeffff00       | mov                 byte ptr [ebp - 0x184], 0
            //   ffd6                 | call                esi

        $sequence_6 = { 51 ffb5dcf9ffff 8d85f4fdffff 50 ff15???????? 33c0 }
            // n = 6, score = 200
            //   51                   | push                ecx
            //   ffb5dcf9ffff         | push                dword ptr [ebp - 0x624]
            //   8d85f4fdffff         | lea                 eax, [ebp - 0x20c]
            //   50                   | push                eax
            //   ff15????????         |                     
            //   33c0                 | xor                 eax, eax

        $sequence_7 = { 8db405aff7ffff 68???????? 56 ff15???????? 56 ffd7 8b8d9cf3ffff }
            // n = 7, score = 200
            //   8db405aff7ffff       | lea                 esi, [ebp + eax - 0x851]
            //   68????????           |                     
            //   56                   | push                esi
            //   ff15????????         |                     
            //   56                   | push                esi
            //   ffd7                 | call                edi
            //   8b8d9cf3ffff         | mov                 ecx, dword ptr [ebp - 0xc64]

        $sequence_8 = { 50 ff15???????? 59 59 6a43 58 6689442414 }
            // n = 7, score = 200
            //   50                   | push                eax
            //   ff15????????         |                     
            //   59                   | pop                 ecx
            //   59                   | pop                 ecx
            //   6a43                 | push                0x43
            //   58                   | pop                 eax
            //   6689442414           | mov                 word ptr [esp + 0x14], ax

        $sequence_9 = { 50 ff15???????? c70424???????? 33f6 56 6801001f00 ff15???????? }
            // n = 7, score = 200
            //   50                   | push                eax
            //   ff15????????         |                     
            //   c70424????????       |                     
            //   33f6                 | xor                 esi, esi
            //   56                   | push                esi
            //   6801001f00           | push                0x1f0001
            //   ff15????????         |                     

    condition:
        7 of them and filesize < 360448
}
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