MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 50d4047ceee0880eaafa9f27bf63914481f101c5e47fb8fe819a36362de036c9. 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: 13


Intelligence 13 IOCs YARA 3 File information Comments
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SHA256 hash: 50d4047ceee0880eaafa9f27bf63914481f101c5e47fb8fe819a36362de036c9
SHA3-384 hash: ecd498be6ce4ba3769262a5e93cc713e9420c81d0edf913891b10897a6a34fcbf350c2b29b25ef822abef8dbd8ff3db9
SHA1 hash: 7ea5ece4917f90289e5bc52312843d2c4eee1ddd
MD5 hash: 45eac982af79d0b7f7ae032514c67deb
humanhash: lactose-triple-jersey-cold
File name:45eac982af79d0b7f7ae032514c67deb.rtf
Download: download sample
Signature Formbook
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File size:66'823 bytes
First seen:2023-08-08 07:42:20 UTC
Last seen:Never
File type:Rich Text Format (RTF) rtf
MIME type:text/rtf
ssdeep 768:swAbZSibMX9gRWjqg3VVeMvHR3mCsclD6:swAlRw3SMvHRflm
TLSH T16D630268C34F01A9CFA662379B675A4545FCBB3AF24052A1306C437933EEC3D922667D
Reporter abuse_ch
Tags:CVE-2017-11882 FormBook rtf

Intelligence

File Origin
# of uploads :
1
# of downloads :
114
Origin country :
NL NL
Vendor Threat Intelligence
Malware family:
formbook
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ID:
1
File name:
RevisedXPO.docx
Verdict:
Malicious activity
Analysis date:
2023-08-08 06:20:02 UTC
Tags:
exploit cve-2017-11882 loader formbook xloader
Link:
https://app.any.run/tasks/a93b0bce-50e9-4bc4-b975-5f34dc17be0c

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection(s):
Sanesecurity.Malware.29015.RtfHeur.Msg.UNOFFICIAL
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Sanesecurity.Shelter.Malware.BadRtf.ObjUpd.UNOFFICIAL
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MiscreantPunch.EvilRTF.CommonLure.UNOFFICIAL
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MiscreantPunch.RTF.2017-0199.Obfus.171711.UNOFFICIAL
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Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Searching for synchronization primitives
Launching a process
Creating a window
Sending a custom TCP request
Creating a file in the %AppData% directory
Сreating synchronization primitives
Launching cmd.exe command interpreter
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/50d4047ceee0880eaafa9f27bf63914481f101c5e47fb8fe819a36362de036c9/results/dashboard
Behaviour
BlacklistAPI detected
Gathering data
Verdict:
Unknown
Link:
https://www.hybrid-analysis.com/sample/50d4047ceee0880eaafa9f27bf63914481f101c5e47fb8fe819a36362de036c9
Result
Verdict:
MALICIOUS
Result
Threat name:
FormBook
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Detection:
malicious
Classification:
troj.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1287574
Signature
.NET source code contains potential unpacker
Antivirus / Scanner detection for submitted sample
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
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)
Modifies the prolog of user mode functions (user mode inline hooks)
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Office equation editor drops PE file
Office equation editor establishes network connection
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
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: 1287574 Sample: iNtlHI4zWX.rtf Startdate: 08/08/2023 Architecture: WINDOWS Score: 100 46 Found malware configuration 2->46 48 Malicious sample detected (through community Yara rule) 2->48 50 Antivirus detection for URL or domain 2->50 52 12 other signatures 2->52 10 EQNEDT32.EXE 11 2->10         started        15 WINWORD.EXE 336 11 2->15         started        17 EQNEDT32.EXE 2->17         started        process3 dnsIp4 44 2.59.254.18, 49161, 80 CMCSUS Germany 10->44 34 C:\Users\user\AppData\...\obitaoh68951.exe, PE32 10->34 dropped 36 C:\Users\user\AppData\Local\...\obizx[1].exe, PE32 10->36 dropped 72 Office equation editor establishes network connection 10->72 74 Office equation editor starts processes (likely CVE 2017-11882 or CVE-2018-0802) 10->74 19 obitaoh68951.exe 1 5 10->19         started        file5 signatures6 process7 signatures8 54 Multi AV Scanner detection for dropped file 19->54 56 Machine Learning detection for dropped file 19->56 58 Tries to detect virtualization through RDTSC time measurements 19->58 60 Injects a PE file into a foreign processes 19->60 22 obitaoh68951.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 5 22->25 injected process11 dnsIp12 38 www.gaoxiba150.com 43.228.76.51, 49164, 80 CHINANET-YUNNAN-IDC1CHINANETYunnanprovinceIDC1network China 25->38 40 www.gsvaedpzugtdn.com 25->40 42 2 other IPs or domains 25->42 70 System process connects to network (likely due to code injection or exploit) 25->70 29 mstsc.exe 25->29         started        signatures13 process14 signatures15 76 Modifies the context of a thread in another process (thread injection) 29->76 78 Maps a DLL or memory area into another process 29->78 80 Tries to detect virtualization through RDTSC time measurements 29->80 32 cmd.exe 29->32         started        process16
Detection:
cve-2017-11882-shellcode
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Link:
https://mwdb.cert.pl/sample/50d4047ceee0880eaafa9f27bf63914481f101c5e47fb8fe819a36362de036c9/
Threat name:
Document-RTF.Exploit.CVE-2017-11882
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Status:
Malicious
First seen:
2023-08-07 23:36:16 UTC
File Type:
Document
Extracted files:
4
AV detection:
16 of 38 (42.11%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=kdkai7ho4cea5kx2t4t36y4risa7caof4r73r7ubti3dmlpag3eq._file
Result
Malware family:
formbook
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Score:
  10/10
Tags:
family:formbook campaign:oy30 rat spyware stealer trojan
Link:
https://tria.ge/reports/230808-jj9aeabc64/
Behaviour
Launches Equation Editor
Suspicious behavior: AddClipboardFormatListener
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Drops file in Windows directory
Suspicious use of SetThreadContext
Executes dropped EXE
Loads dropped DLL
Blocklisted process makes network request
Downloads MZ/PE file
Formbook payload
Formbook
Malware family:
XLoader
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Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/50d4047ceee0/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Malicious File
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/50d4047ceee0880eaafa9f27bf63914481f101c5e47fb8fe819a36362de036c9

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:DebuggerCheck__API
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Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:INDICATOR_RTF_MalVer_Objects
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Author:ditekSHen
Description:Detects RTF documents with non-standard version and embeding one of the object mostly observed in exploit documents.
Rule name:SUSP_INDICATOR_RTF_MalVer_Objects
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Author:ditekSHen
Description:Detects RTF documents with non-standard version and embedding one of the object mostly observed in exploit (e.g. CVE-2017-11882) documents.
Reference:https://github.com/ditekshen/detection

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 50d4047ceee0880eaafa9f27bf63914481f101c5e47fb8fe819a36362de036c9

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/2695769/
  
Delivery method
Distributed via web download

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