MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 924cd3bd98de0cd3075d17af2abcb51033902de9fcc069c3043d2cf5f8a49cb9. While MalwareBazaar tries to identify whether the sample provided is malicious or not, there is no guarantee that a sample in MalwareBazaar is malicious.

Database Entry


Formbook


Vendor detections: 9


Intelligence 9 IOCs YARA 7 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 924cd3bd98de0cd3075d17af2abcb51033902de9fcc069c3043d2cf5f8a49cb9
SHA3-384 hash: 95b41bfaaddd8ce71ef5c955b834d2cd9ac1608a0958859187a55f242d0e3076f91eda7f0a02900f5419c3a6f6d000b6
SHA1 hash: c6aa116ea73434d91153c76349f73372b4eb614d
MD5 hash: 4f9a3ec99cb88fe8b6ad1b3f67b3ae25
humanhash: cold-speaker-washington-network
File name:4f9a3ec99cb88fe8b6ad1b3f67b3ae25.rtf
Download: download sample
Signature Formbook
Create hunting rule
File size:9'837 bytes
First seen:2021-04-20 11:03:42 UTC
Last seen:Never
File type:Rich Text Format (RTF) rtf
MIME type:text/rtf
ssdeep 192:VWf5wgj0uTH6vrIjVQyAGXpxQbJ0R3YHBgxoShx50:kf5wgj0uDsiQ3+p6beR3GQ/50
TLSH A3127CC8EDE065AAE787A551545E7BDD082678BC43E70F79BC4CFAE20B4A93702F9000
Reporter abuse_ch
Tags:FormBook rtf

Intelligence

File Origin
# of uploads :
1
# of downloads :
114
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
7665585857.docx
Verdict:
Malicious activity
Analysis date:
2021-04-20 10:03:25 UTC
Tags:
generated-doc opendir loader exploit CVE-2017-11882 trojan formbook stealer
Link:
https://app.any.run/tasks/f644c715-694d-4bd5-8d5c-ba4a195353fe

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Verdict:
Malicious
File type:
application/rtf
Has a screenshot:
False
Contains macros:
False
Detection(s):
Sanesecurity.Malware.27301.RtfHeur.BadVer.UNOFFICIAL
Create hunting rule

SecuriteInfo.com.FakeRTF-2.UNOFFICIAL
Create hunting rule

MiscreantPunch.RTF.2017-0199.Obfus.170830.UNOFFICIAL
Create hunting rule

MiscreantPunch.RTF.2017-0199.Obfus.171711.UNOFFICIAL
Create hunting rule

TwinWave.EvilDoc.RTFFakeVersionWithObjUpdateUKSurfMix.20200514.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Launching a process
Creating a window
Creating a file
Launching cmd.exe command interpreter
Deleting a recently created file
DNS request
Sending an HTTP GET request
Launching a file downloaded from the Internet
Unauthorized injection to a recently created process
Unauthorized injection to a recently created process by context flags manipulation
Sending an HTTP GET request to an infection source by exploiting the app vulnerability
Creating a process from a recently created file
Unauthorized injection to a system process
Result
Verdict:
Malicious
File Type:
RTF File
Link:
https://app.docguard.net/924cd3bd98de0cd3075d17af2abcb51033902de9fcc069c3043d2cf5f8a49cb9/results/dashboard
Result
Verdict:
MALICIOUS
Link:
https://labs.inquest.net/dfi/sha256/924cd3bd98de0cd3075d17af2abcb51033902de9fcc069c3043d2cf5f8a49cb9
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/688881
Signature
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Contains functionality to inject code into remote processes
Detected unpacking (changes PE section rights)
Drops PE files to the user root directory
Found malware configuration
Injects a PE file into a foreign processes
Machine Learning detection for dropped file
Malicious sample detected (through community Yara rule)
Maps a DLL or memory area into another process
Modifies the context of a thread in another process (thread injection)
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Office equation editor drops PE file
Office equation editor starts processes (likely CVE 2017-11882 or CVE-2018-0802)
Queues an APC in another process (thread injection)
Sample uses process hollowing technique
Sigma detected: EQNEDT32.EXE connecting to internet
Sigma detected: File Dropped By EQNEDT32EXE
Snort IDS alert for network traffic (e.g. based on Emerging Threat rules)
System process connects to network (likely due to code injection or exploit)
Tries to detect virtualization through RDTSC time measurements
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 393401 Sample: od3Y2SFzdP.rtf Startdate: 20/04/2021 Architecture: WINDOWS Score: 100 46 Snort IDS alert for network traffic (e.g. based on Emerging Threat rules) 2->46 48 Found malware configuration 2->48 50 Malicious sample detected (through community Yara rule) 2->50 52 11 other signatures 2->52 10 EQNEDT32.EXE 12 2->10         started        15 WINWORD.EXE 336 20 2->15         started        17 EQNEDT32.EXE 2->17         started        process3 dnsIp4 44 23.95.122.25, 49165, 80 AS-COLOCROSSINGUS United States 10->44 34 C:\Users\user\AppData\Local\...\vbc[1].exe, PE32 10->34 dropped 36 C:\Users\Public\vbc.exe, PE32 10->36 dropped 72 Office equation editor starts processes (likely CVE 2017-11882 or CVE-2018-0802) 10->72 19 vbc.exe 10->19         started        file5 signatures6 process7 signatures8 54 Multi AV Scanner detection for dropped file 19->54 56 Detected unpacking (changes PE section rights) 19->56 58 Machine Learning detection for dropped file 19->58 60 3 other signatures 19->60 22 vbc.exe 19->22         started        process9 signatures10 62 Modifies the context of a thread in another process (thread injection) 22->62 64 Maps a DLL or memory area into another process 22->64 66 Sample uses process hollowing technique 22->66 68 Queues an APC in another process (thread injection) 22->68 25 explorer.exe 22->25 injected process11 dnsIp12 38 www.19come.com 156.226.160.44, 49166, 80 XIAOZHIYUN1-AS-APICIDCNETWORKUS Seychelles 25->38 40 sportwillwin.com 94.46.116.239, 49171, 80 MISSDOMAINSE Sweden 25->40 42 12 other IPs or domains 25->42 70 System process connects to network (likely due to code injection or exploit) 25->70 29 svchost.exe 25->29         started        signatures13 process14 signatures15 74 Modifies the context of a thread in another process (thread injection) 29->74 76 Maps a DLL or memory area into another process 29->76 78 Tries to detect virtualization through RDTSC time measurements 29->78 32 cmd.exe 29->32         started        process16
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/924cd3bd98de0cd3075d17af2abcb51033902de9fcc069c3043d2cf5f8a49cb9/
Gathering data
Result
Malware family:
xloader
Create hunting rule
Score:
  10/10
Tags:
family:xloader loader rat
Link:
https://tria.ge/reports/210420-ldtehvfh4j/
Behaviour
Checks processor information in registry
Enumerates system info in registry
Launches Equation Editor
Modifies Internet Explorer settings
Suspicious behavior: AddClipboardFormatListener
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of FindShellTrayWindow
Suspicious use of SendNotifyMessage
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Office loads VBA resources, possible macro or embedded object present
Drops file in Windows directory
Suspicious use of SetThreadContext
Loads dropped DLL
Uses the VBS compiler for execution
Blocklisted process makes network request
Executes dropped EXE
Xloader Payload
Xloader
Malware Config
C2 Extraction:
http://www.batiktintaemas.com/goei/
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Formbook
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/924cd3bd98de0cd3075d17af2abcb51033902de9fcc069c3043d2cf5f8a49cb9

YARA Signatures

MalwareBazaar uses YARA rules from several public and non-public repositories, such as YARAhub and Malpedia. Those are being matched against malware samples uploaded to MalwareBazaar as well as against any suspicious process dumps they may create. Please note that only results from TLP:CLEAR rules are being displayed.

Rule name:Email_stealer_bin_mem
Create hunting rule
Author:James_inthe_box
Description:Email in files like avemaria
Rule name:INDICATOR_RTF_EXPLOIT_CVE_2017_11882_4
Create hunting rule
Author:ditekSHen
Description:detects RTF variant documents potentially exploiting CVE-2018-0802 or CVE-2017-11882
Rule name:INDICATOR_RTF_MalVer_Objects
Create hunting rule
Author:ditekSHen
Description:Detects RTF documents with non-standard version and embeding one of the object mostly observed in exploit documents.
Rule name:IPPort_combo_mem
Create hunting rule
Author:James_inthe_box
Description:IP and port combo
Rule name:Select_from_enumeration
Create hunting rule
Author:James_inthe_box
Description:IP and port combo
Rule name:SharedStrings
Create hunting rule
Author:Katie Kleemola
Description:Internal names found in LURK0/CCTV0 samples
Rule name:UAC_bypass_bin_mem
Create hunting rule
Author:James_inthe_box
Description:UAC bypass in files like avemaria

File information

The table below shows additional information about this malware sample such as delivery method and external references.

Web download

Formbook

Rich Text Format (RTF) rtf 924cd3bd98de0cd3075d17af2abcb51033902de9fcc069c3043d2cf5f8a49cb9

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/1143206/
  
Delivery method
Distributed via web download

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