MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 1f12508822b30e1dd04d9e8b91e776c5dde66c483d07ce9ffd714138c91ccf48. 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: 14


Intelligence 14 IOCs YARA 2 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 1f12508822b30e1dd04d9e8b91e776c5dde66c483d07ce9ffd714138c91ccf48
SHA3-384 hash: ff218f10371ed9439763a96374ecf07f462b72bd5262a3a746bdd8054b6ad57597bf90d2072bde98f62d2ded13881202
SHA1 hash: 894116948a21eac51f42f11d66fe516813cf29c7
MD5 hash: 74388b1571594dcd616538347f335bd0
humanhash: grey-fourteen-lactose-oregon
File name:f1.f1.f1.doc
Download: download sample
Signature Formbook
Create hunting rule
File size:13'123 bytes
First seen:2023-03-06 15:51:06 UTC
Last seen:2023-03-06 17:32:28 UTC
File type:Word file doc
MIME type:text/rtf
ssdeep 384:M2pG6Kvhwo3rZQQPwp/u5UAioV/72E79s:M2piv6EZ1gm5UAiw/99s
TLSH T1F0424B0027CCFCF2C319E13B42699559587EA1B330661ADD7ADDD05137AC20C69F95FA
Reporter JAMESWT_WT
Tags:CVE-2017-11882 doc FormBook

Intelligence

File Origin
# of uploads :
2
# of downloads :
253
Origin country :
IT IT
Vendor Threat Intelligence
Malware family:
formbook
Create hunting rule
ID:
1
File name:
f1.f1.f1.doc
Verdict:
Malicious activity
Analysis date:
2023-03-06 15:53:45 UTC
Tags:
opendir exploit cve-2017-11882 loader formbook trojan stealer
Link:
https://app.any.run/tasks/80e4da69-f190-4edd-8522-01914c0c8837

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection(s):
Sanesecurity.Malware.28881.RtfHeur.UNOFFICIAL
Create hunting rule

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

Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Searching for synchronization primitives
Sending a custom TCP request
Launching a process
Creating a window
Creating a file
Сreating synchronization primitives
Possible injection to a system process
Sending an HTTP GET request
Creating a process from a recently created file
Unauthorized injection to a system process
Result
Verdict:
Malicious
File Type:
Fake RTF File
Link:
https://app.docguard.net/1f12508822b30e1dd04d9e8b91e776c5dde66c483d07ce9ffd714138c91ccf48/results/dashboard
Behaviour
BlacklistAPI detected
Verdict:
Malicious
Threat level:
  10/10
Confidence:
80%
Tags:
embedequation exploit packed shellcode
Link:
https://www.filescan.io/uploads/64060c2303b144271569ebcd/reports/f7ba40cc-10b8-4e81-9fbc-b6496106e4c0/overview
Verdict:
Malicious
Labled as:
CVE-2017-11882
Link:
https://www.hybrid-analysis.com/sample/1f12508822b30e1dd04d9e8b91e776c5dde66c483d07ce9ffd714138c91ccf48
Label:
Malicious
Suspicious Score:
10/10
Score Malicious:
1%
Score Benign:
0%
Link:
https://www.malware.ai/gui/files/?id=51f015e4-49d8-442a-b233-9804b762c0c5
Result
Verdict:
MALICIOUS
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1187917
Signature
Allocates memory in foreign processes
Antivirus / Scanner detection for submitted sample
Antivirus detection for URL or domain
DLL side loading technique detected
Drops PE files to the user root directory
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 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 harvest and steal browser information (history, passwords, etc)
Tries to steal Mail credentials (via file / registry access)
Writes to foreign memory regions
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 820792 Sample: f1.f1.f1.doc Startdate: 06/03/2023 Architecture: WINDOWS Score: 100 52 Malicious sample detected (through community Yara rule) 2->52 54 Antivirus detection for URL or domain 2->54 56 Antivirus / Scanner detection for submitted sample 2->56 58 9 other signatures 2->58 10 EQNEDT32.EXE 12 2->10         started        15 WINWORD.EXE 336 18 2->15         started        17 EQNEDT32.EXE 2->17         started        process3 dnsIp4 48 45.137.22.69, 49181, 80 ROOTLAYERNETNL Netherlands 10->48 36 C:\Users\user\AppData\Local\...\vbc[1].exe, PE32 10->36 dropped 38 C:\Users\Public\vbc.exe, PE32 10->38 dropped 78 Office equation editor establishes network connection 10->78 80 Office equation editor starts processes (likely CVE 2017-11882 or CVE-2018-0802) 10->80 19 vbc.exe 1 5 10->19         started        file5 signatures6 process7 signatures8 60 Multi AV Scanner detection for dropped file 19->60 62 Machine Learning detection for dropped file 19->62 64 Writes to foreign memory regions 19->64 66 2 other signatures 19->66 22 RegSvcs.exe 19->22         started        process9 signatures10 68 Modifies the context of a thread in another process (thread injection) 22->68 70 Maps a DLL or memory area into another process 22->70 72 Sample uses process hollowing technique 22->72 74 Queues an APC in another process (thread injection) 22->74 25 explorer.exe 2 22->25 injected process11 dnsIp12 42 ikroop.com 162.214.80.79, 49184, 49185, 49186 UNIFIEDLAYER-AS-1US United States 25->42 44 www.estates.team 64.190.63.111, 49190, 49191, 49192 NBS11696US United States 25->44 46 6 other IPs or domains 25->46 76 System process connects to network (likely due to code injection or exploit) 25->76 29 chkdsk.exe 3 20 25->29         started        signatures13 process14 dnsIp15 50 www.sqlite.org 45.33.6.223, 49183, 80 LINODE-APLinodeLLCUS United States 29->50 40 C:\Users\user\AppData\Local\...\sqlite3.dll, PE32 29->40 dropped 82 Tries to steal Mail credentials (via file / registry access) 29->82 84 Tries to harvest and steal browser information (history, passwords, etc) 29->84 86 Modifies the context of a thread in another process (thread injection) 29->86 88 3 other signatures 29->88 34 firefox.exe 29->34         started        file16 signatures17 process18
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/1f12508822b30e1dd04d9e8b91e776c5dde66c483d07ce9ffd714138c91ccf48/
Threat name:
Document-RTF.Exploit.CVE-2017-11882
Create hunting rule
Status:
Malicious
First seen:
2023-03-06 13:50:05 UTC
File Type:
Document
Extracted files:
4
AV detection:
12 of 24 (50.00%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=d4jfbcbcwmhb3ucnt2fzdz3wyxo6m3cihud45h75ofatrsi4z5ea._file
Result
Malware family:
n/a
Score:
  8/10
Tags:
n/a
Link:
https://tria.ge/reports/230306-ta2t3sdb59/
Behaviour
Checks processor information in registry
Enumerates system info in registry
Launches Equation Editor
Modifies Internet Explorer settings
Modifies registry class
Suspicious behavior: AddClipboardFormatListener
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
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
Executes dropped EXE
Loads dropped DLL
Uses the VBS compiler for execution
Blocklisted process makes network request
Downloads MZ/PE file
Malware family:
XLoader
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/1f12508822b3/report/overview.html
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/1f12508822b30e1dd04d9e8b91e776c5dde66c483d07ce9ffd714138c91ccf48

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: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:SUSP_INDICATOR_RTF_MalVer_Objects
Create hunting rule
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

Word file doc 1f12508822b30e1dd04d9e8b91e776c5dde66c483d07ce9ffd714138c91ccf48

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/2560529/
  
Delivery method
Distributed via web download

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