SYMBOLCOMMON_NAMEaka. SYNONYMS
win.formbook (Back to overview)

Formbook

Actor(s): SWEED, Cobalt

URLhaus        

FormBook contains a unique crypter RunPE that has unique behavioral patterns subject to detection. It was initially called "Babushka Crypter" by Insidemalware.

References
2020-07-29ESET Researchwelivesecurity
@techreport{welivesecurity:20200729:threat:496355c, author = {welivesecurity}, title = {{THREAT REPORT Q2 2020}}, date = {2020-07-29}, institution = {ESET Research}, url = {https://www.welivesecurity.com/wp-content/uploads/2020/07/ESET_Threat_Report_Q22020.pdf}, language = {English}, urldate = {2020-07-30} } THREAT REPORT Q2 2020
DEFENSOR ID HiddenAd Bundlore Pirrit Agent.BTZ Cerber ClipBanker CROSSWALK Cryptowall CTB Locker DanaBot Dharma Formbook Gandcrab Grandoreiro Houdini ISFB LockBit Locky Mailto Maze Microcin Nemty NjRAT Phobos Ransomware PlugX Pony REvil Socelars STOP Ransomware Tinba TrickBot WannaCryptor
2020-07-22S2W LAB Inc.S2W LAB INTELLIGENCE TEAM
@online{team:20200722:formbook:6297801, author = {S2W LAB INTELLIGENCE TEAM}, title = {{'FormBook Tracker' unveiled on the Dark Web}}, date = {2020-07-22}, organization = {S2W LAB Inc.}, url = {https://drive.google.com/file/d/1oxINyIJfMtv_upJqRK9vLSchIBaU8wiU/view}, language = {English}, urldate = {2020-08-14} } 'FormBook Tracker' unveiled on the Dark Web
Formbook
2020-05-14SophosLabsMarkel Picado
@online{picado:20200514:raticate:6334722, author = {Markel Picado}, title = {{RATicate: an attacker’s waves of information-stealing malware}}, date = {2020-05-14}, organization = {SophosLabs}, url = {https://news.sophos.com/en-us/2020/05/14/raticate/}, language = {English}, urldate = {2020-05-18} } RATicate: an attacker’s waves of information-stealing malware
Agent Tesla BetaBot BlackRemote Formbook Loki Password Stealer (PWS) NetWire RC NjRAT Remcos
2020-04-01CiscoShyam Sundar Ramaswami, Andrea Kaiser
@online{ramaswami:20200401:navigating:965952a, author = {Shyam Sundar Ramaswami and Andrea Kaiser}, title = {{Navigating Cybersecurity During a Pandemic: Latest Malware and Threat Actors}}, date = {2020-04-01}, organization = {Cisco}, url = {https://umbrella.cisco.com/blog/navigating-cybersecurity-during-a-pandemic-latest-malware-and-threat-actors}, language = {English}, urldate = {2020-08-19} } Navigating Cybersecurity During a Pandemic: Latest Malware and Threat Actors
Azorult CloudEyE Formbook KPOT Stealer Metamorfo Nanocore RAT NetWire RC TrickBot
2020-03-24AviraAvira Protection Labs
@online{labs:20200324:new:88d7b1d, author = {Avira Protection Labs}, title = {{A new technique to analyze FormBook malware infections}}, date = {2020-03-24}, organization = {Avira}, url = {https://insights.oem.avira.com/a-new-technique-to-analyze-formbook-malware-infections/}, language = {English}, urldate = {2020-04-01} } A new technique to analyze FormBook malware infections
Formbook
2020-01-19360kate
@online{kate:20200119:bayworld:2cc2212, author = {kate}, title = {{BayWorld event, Cyber Attack Against Foreign Trade Industry}}, date = {2020-01-19}, organization = {360}, url = {https://blog.360totalsecurity.com/en/bayworld-event-cyber-attack-against-foreign-trade-industry/}, language = {English}, urldate = {2020-02-03} } BayWorld event, Cyber Attack Against Foreign Trade Industry
Azorult Formbook Nanocore RAT Revenge RAT
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
2019-09-26ProofpointBryan Campbell, Jeremy Hedges, Proofpoint Threat Insight Team
@online{campbell:20190926:new:d228362, author = {Bryan Campbell and Jeremy Hedges and Proofpoint Threat Insight Team}, title = {{New WhiteShadow downloader uses Microsoft SQL to retrieve malware}}, date = {2019-09-26}, organization = {Proofpoint}, url = {https://www.proofpoint.com/us/threat-insight/post/new-whiteshadow-downloader-uses-microsoft-sql-retrieve-malware}, language = {English}, urldate = {2020-02-26} } New WhiteShadow downloader uses Microsoft SQL to retrieve malware
WhiteShadow Agent Tesla Azorult Crimson RAT Formbook Nanocore RAT NetWire RC NjRAT Remcos
2019-07-15Cisco TalosEdmund Brumaghin
@online{brumaghin:20190715:sweed:9725699, author = {Edmund Brumaghin}, title = {{SWEED: Exposing years of Agent Tesla campaigns}}, date = {2019-07-15}, organization = {Cisco Talos}, url = {https://blog.talosintelligence.com/2019/07/sweed-agent-tesla.html}, language = {English}, urldate = {2020-01-08} } SWEED: Exposing years of Agent Tesla campaigns
Agent Tesla Formbook Loki Password Stealer (PWS) SWEED
2019-06-12CyberbitHod Gavriel
@online{gavriel:20190612:formbook:8dc2df9, author = {Hod Gavriel}, title = {{Formbook Research Hints Large Data Theft Attack Brewing}}, date = {2019-06-12}, organization = {Cyberbit}, url = {https://www.cyberbit.com/formbook-research-hints-large-data-theft-attack-brewing/}, language = {English}, urldate = {2020-08-21} } Formbook Research Hints Large Data Theft Attack Brewing
Formbook
2019-05-02Usual Suspect REJohann Aydinbas
@online{aydinbas:20190502:formbook:d1ef715, author = {Johann Aydinbas}, title = {{FormBook - Hiding in plain sight}}, date = {2019-05-02}, organization = {Usual Suspect RE}, url = {https://usualsuspect.re/article/formbook-hiding-in-plain-sight}, language = {English}, urldate = {2020-01-13} } FormBook - Hiding in plain sight
Formbook
2019-01Virus BulletinGabriela Nicolao
@online{nicolao:201901:inside:a4c68f3, author = {Gabriela Nicolao}, title = {{Inside Formbook infostealer}}, date = {2019-01}, organization = {Virus Bulletin}, url = {https://www.virusbulletin.com/virusbulletin/2019/01/vb2018-paper-inside-formbook-infostealer/}, language = {English}, urldate = {2019-12-18} } Inside Formbook infostealer
Formbook
2018-12-05BotconfRémi Jullian
@techreport{jullian:20181205:formbook:40cf2ad, author = {Rémi Jullian}, title = {{FORMBOOK In-depth malware analysis}}, date = {2018-12-05}, institution = {Botconf}, url = {https://www.botconf.eu/wp-content/uploads/2018/12/2018-R-Jullian-In-depth-Formbook-Malware-Analysis.pdf}, language = {English}, urldate = {2019-12-17} } FORMBOOK In-depth malware analysis
Formbook
2018-11-01PeerlystSudhendu
@online{sudhendu:20181101:how:582221a, author = {Sudhendu}, title = {{How to Analyse FormBook - A New Malware-as-a-Service}}, date = {2018-11-01}, organization = {Peerlyst}, url = {https://www.peerlyst.com/posts/how-to-analyse-formbook-a-new-malware-as-a-service-sudhendu?trk=explore_page_resources_recent}, language = {English}, urldate = {2019-12-17} } How to Analyse FormBook - A New Malware-as-a-Service
Formbook
2018-10-16PeerlystSudhendu
@online{sudhendu:20181016:how:8aa1eed, author = {Sudhendu}, title = {{How to understand FormBook - A New Malware-as-a-Service}}, date = {2018-10-16}, organization = {Peerlyst}, url = {https://www.peerlyst.com/posts/how-to-understand-formbook-a-new-malware-as-a-service-sudhendu?}, language = {English}, urldate = {2020-01-09} } How to understand FormBook - A New Malware-as-a-Service
Formbook
2018-06-22InQuestAswanda
@online{aswanda:20180622:formbook:ce3c98b, author = {Aswanda}, title = {{FormBook stealer: Data theft made easy}}, date = {2018-06-22}, organization = {InQuest}, url = {http://blog.inquest.net/blog/2018/06/22/a-look-at-formbook-stealer/}, language = {English}, urldate = {2020-01-09} } FormBook stealer: Data theft made easy
Formbook
2018-06-20Cisco TalosWarren Mercer, Paul Rascagnères
@online{mercer:20180620:my:9c08115, author = {Warren Mercer and Paul Rascagnères}, title = {{My Little FormBook}}, date = {2018-06-20}, organization = {Cisco Talos}, url = {https://blog.talosintelligence.com/2018/06/my-little-formbook.html}, language = {English}, urldate = {2020-01-06} } My Little FormBook
Formbook
2018-03-29StormshieldRémi Jullian
@online{jullian:20180329:indepth:badef63, author = {Rémi Jullian}, title = {{In-depth Formbook malware analysis – Obfuscation and process injection}}, date = {2018-03-29}, organization = {Stormshield}, url = {https://thisissecurity.stormshield.com/2018/03/29/in-depth-formbook-malware-analysis-obfuscation-and-process-injection/}, language = {English}, urldate = {2020-01-10} } In-depth Formbook malware analysis – Obfuscation and process injection
Formbook
2018-01-29Vitali Kremez BlogVitali Kremez
@online{kremez:20180129:lets:450880d, author = {Vitali Kremez}, title = {{Let's Learn: Dissecting FormBook Infostealer Malware: Crypter & "RunLib.dll"}}, date = {2018-01-29}, organization = {Vitali Kremez Blog}, url = {http://www.vkremez.com/2018/01/lets-learn-dissecting-formbook.html}, language = {English}, urldate = {2020-01-10} } Let's Learn: Dissecting FormBook Infostealer Malware: Crypter & "RunLib.dll"
Formbook
2017-10-05FireEyeNart Villeneuve, Randi Eitzman, Sandor Nemes, Tyler Dean
@online{villeneuve:20171005:significant:0b91e49, author = {Nart Villeneuve and Randi Eitzman and Sandor Nemes and Tyler Dean}, title = {{Significant FormBook Distribution Campaigns Impacting the U.S. and South Korea}}, date = {2017-10-05}, organization = {FireEye}, url = {https://www.fireeye.com/blog/threat-research/2017/10/formbook-malware-distribution-campaigns.html}, language = {English}, urldate = {2019-12-20} } Significant FormBook Distribution Campaigns Impacting the U.S. and South Korea
Formbook
2017-09-20NetScoutDennis Schwarz
@online{schwarz:20170920:formidable:654d8e3, author = {Dennis Schwarz}, title = {{The Formidable FormBook Form Grabber}}, date = {2017-09-20}, organization = {NetScout}, url = {https://www.arbornetworks.com/blog/asert/formidable-formbook-form-grabber/}, language = {English}, urldate = {2019-07-09} } The Formidable FormBook Form Grabber
Formbook
2016-06Safety First BlogSL4ID3R
@online{sl4id3r:201606:form:53a7823, author = {SL4ID3R}, title = {{Form Grabber 2016 [Crome,FF,Opera,Thunderbird, Outlook IE Safari] Hack the world}}, date = {2016-06}, organization = {Safety First Blog}, url = {http://cambuz.blogspot.de/2016/06/form-grabber-2016-cromeffoperathunderbi.html}, language = {English}, urldate = {2019-11-26} } Form Grabber 2016 [Crome,FF,Opera,Thunderbird, Outlook IE Safari] Hack the world
Formbook
Yara Rules
[TLP:WHITE] win_formbook_auto (20200817 | autogenerated rule brought to you by yara-signator)
rule win_formbook_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2020-08-17"
        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.formbook"
        malpedia_rule_date = "20200817"
        malpedia_hash = "8c895fd01eccb47a6225bcb1a3ba53cbb98644c5"
        malpedia_version = "20200817"
        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 = { 0f98c0 5f 5e 48 2345f4 8be5 }
            // n = 6, score = 1100
            //   0f98c0               | sets                al
            //   5f                   | pop                 edi
            //   5e                   | pop                 esi
            //   48                   | dec                 eax
            //   2345f4               | and                 eax, dword ptr [ebp - 0xc]
            //   8be5                 | mov                 esp, ebp

        $sequence_1 = { c3 6a01 8d8d00fcffff 6a0a 51 e8???????? 83c404 }
            // n = 7, score = 1100
            //   c3                   | ret                 
            //   6a01                 | push                1
            //   8d8d00fcffff         | lea                 ecx, [ebp - 0x400]
            //   6a0a                 | push                0xa
            //   51                   | push                ecx
            //   e8????????           |                     
            //   83c404               | add                 esp, 4

        $sequence_2 = { 66895441fe 8b06 50 51 6a01 52 53 }
            // n = 7, score = 1100
            //   66895441fe           | mov                 word ptr [ecx + eax*2 - 2], dx
            //   8b06                 | mov                 eax, dword ptr [esi]
            //   50                   | push                eax
            //   51                   | push                ecx
            //   6a01                 | push                1
            //   52                   | push                edx
            //   53                   | push                ebx

        $sequence_3 = { 8d8d4cfdffff 51 52 56 e8???????? 83c424 85c0 }
            // n = 7, score = 1100
            //   8d8d4cfdffff         | lea                 ecx, [ebp - 0x2b4]
            //   51                   | push                ecx
            //   52                   | push                edx
            //   56                   | push                esi
            //   e8????????           |                     
            //   83c424               | add                 esp, 0x24
            //   85c0                 | test                eax, eax

        $sequence_4 = { 8b7508 7528 8b4518 57 8b7e04 337d10 50 }
            // n = 7, score = 1100
            //   8b7508               | mov                 esi, dword ptr [ebp + 8]
            //   7528                 | jne                 0x2a
            //   8b4518               | mov                 eax, dword ptr [ebp + 0x18]
            //   57                   | push                edi
            //   8b7e04               | mov                 edi, dword ptr [esi + 4]
            //   337d10               | xor                 edi, dword ptr [ebp + 0x10]
            //   50                   | push                eax

        $sequence_5 = { 50 6a01 8d45f4 50 51 }
            // n = 5, score = 1100
            //   50                   | push                eax
            //   6a01                 | push                1
            //   8d45f4               | lea                 eax, [ebp - 0xc]
            //   50                   | push                eax
            //   51                   | push                ecx

        $sequence_6 = { 83c408 85c0 750f 8b36 394618 75e8 }
            // n = 6, score = 1100
            //   83c408               | add                 esp, 8
            //   85c0                 | test                eax, eax
            //   750f                 | jne                 0x11
            //   8b36                 | mov                 esi, dword ptr [esi]
            //   394618               | cmp                 dword ptr [esi + 0x18], eax
            //   75e8                 | jne                 0xffffffea

        $sequence_7 = { 8bec 83ec40 8b5510 8b4508 53 56 8b750c }
            // n = 7, score = 1100
            //   8bec                 | mov                 ebp, esp
            //   83ec40               | sub                 esp, 0x40
            //   8b5510               | mov                 edx, dword ptr [ebp + 0x10]
            //   8b4508               | mov                 eax, dword ptr [ebp + 8]
            //   53                   | push                ebx
            //   56                   | push                esi
            //   8b750c               | mov                 esi, dword ptr [ebp + 0xc]

        $sequence_8 = { e8???????? 8b4d0c 8b7508 6bc90d 6a0d 8d543144 52 }
            // n = 7, score = 1100
            //   e8????????           |                     
            //   8b4d0c               | mov                 ecx, dword ptr [ebp + 0xc]
            //   8b7508               | mov                 esi, dword ptr [ebp + 8]
            //   6bc90d               | imul                ecx, ecx, 0xd
            //   6a0d                 | push                0xd
            //   8d543144             | lea                 edx, [ecx + esi + 0x44]
            //   52                   | push                edx

        $sequence_9 = { 56 8b750c 57 8b7d08 6a00 6a01 56 }
            // n = 7, score = 1100
            //   56                   | push                esi
            //   8b750c               | mov                 esi, dword ptr [ebp + 0xc]
            //   57                   | push                edi
            //   8b7d08               | mov                 edi, dword ptr [ebp + 8]
            //   6a00                 | push                0
            //   6a01                 | push                1
            //   56                   | push                esi

    condition:
        7 of them and filesize < 352256
}
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