MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 7eabaf779e36ce7e5cb42d2a7714cd1b781b50136cce8678c038f30d5c64d382. 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: 12


Intelligence 12 IOCs YARA 2 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 7eabaf779e36ce7e5cb42d2a7714cd1b781b50136cce8678c038f30d5c64d382
SHA3-384 hash: 4d2f35f0a2c877afb3211416033791a9a0a28c1782b80194428802e807f96dedbf19d8adf4b9fa473d0860e21c84d7b0
SHA1 hash: 1070693bba0b84d44b45c378581f504508513fb3
MD5 hash: dc3675819e432a1a2bb01f9de2e02e2c
humanhash: beryllium-harry-london-kansas
File name:115.doc
Download: download sample
Signature Formbook
Create hunting rule
File size:20'220 bytes
First seen:2022-08-02 13:39:56 UTC
Last seen:Never
File type:Word file doc
MIME type:application/octet-stream
ssdeep 384:KqWofANKORnMHFYss8CxI0fEWvUC5uvA1apSHXkHW:KqWof6KORnMHFm8CxI0x8Zo6vW
TLSH T19C92447EF68B8E4CEB17D264141A7EAA166DF51DA3C444C1BBBCE730791D8078B21638
Reporter madjack_red
Tags:CVE-2017-11882 doc FormBook

Intelligence

File Origin
# of uploads :
1
# of downloads :
187
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
115.doc
Verdict:
Malicious activity
Analysis date:
2022-08-02 13:39:44 UTC
Tags:
trojan opendir exploit CVE-2017-11882 loader
Link:
https://app.any.run/tasks/5a763b60-7171-4a53-b957-0870477d5495

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Verdict:
Malicious
File type:
application/msword
Has a screenshot:
False
Contains macros:
False
Detection(s):
SecuriteInfo.com.Spam-473.UNOFFICIAL
Create hunting rule

Sanesecurity.Malware.27333.RtfHeur.BadVer.UNOFFICIAL
Create hunting rule

SecuriteInfo.com.FakeRTF-1.UNOFFICIAL
Create hunting rule

Sanesecurity.Malware.26244.RtfHeur.UNOFFICIAL
Create hunting rule

MiscreantPunch.RTF.EvilRTF.CVE-2017-0199-Obfus.UNOFFICIAL
Create hunting rule

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

Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Searching for synchronization primitives
Launching a process
Creating a window
Creating a file
Сreating synchronization primitives
Sending an HTTP GET request to an infection source by exploiting the app vulnerability
Creating a process from a recently created file
Result
Verdict:
Malicious
File Type:
Fake RTF File
Link:
https://app.docguard.net/7eabaf779e36ce7e5cb42d2a7714cd1b781b50136cce8678c038f30d5c64d382/results/dashboard
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
CVE-2017-11882 embedequation exploit packed shellcode
Link:
https://www.filescan.io/uploads/62e929e96336465f2a05efc6/reports/cc785800-af82-4fef-b440-a998bf60e848/overview
Result
Verdict:
MALICIOUS
Link:
https://labs.inquest.net/dfi/sha256/7eabaf779e36ce7e5cb42d2a7714cd1b781b50136cce8678c038f30d5c64d382
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1044966
Signature
.NET source code contains potential unpacker
Antivirus / Scanner detection for submitted sample
Antivirus detection for dropped file
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Drops PE files to the user root directory
Initial sample is an obfuscated RTF file
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
Shellcode detected
Sigma detected: EQNEDT32.EXE connecting to internet
Sigma detected: File Dropped By EQNEDT32EXE
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Tries to detect virtualization through RDTSC time measurements
Yara detected AntiVM3
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 677460 Sample: 115.doc Startdate: 02/08/2022 Architecture: WINDOWS Score: 100 50 Initial sample is an obfuscated RTF file 2->50 52 Malicious sample detected (through community Yara rule) 2->52 54 Antivirus detection for URL or domain 2->54 56 16 other signatures 2->56 10 EQNEDT32.EXE 12 2->10         started        15 WINWORD.EXE 291 21 2->15         started        process3 dnsIp4 40 192.3.110.133, 49171, 80 AS-COLOCROSSINGUS United States 10->40 32 C:\Users\user\AppData\Local\...\vbc[1].exe, PE32 10->32 dropped 34 C:\Users\Public\vbc.exe, PE32 10->34 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 17 vbc.exe 1 5 10->17         started        36 C:\Users\user\Desktop\~$115.doc, data 15->36 dropped 38 ~WRF{76FF9A52-E1A5...D-DE3E7F5AB2EC}.tmp, Composite 15->38 dropped file5 signatures6 process7 signatures8 42 Multi AV Scanner detection for dropped file 17->42 44 Machine Learning detection for dropped file 17->44 46 Tries to detect virtualization through RDTSC time measurements 17->46 48 Injects a PE file into a foreign processes 17->48 20 vbc.exe 17->20         started        process9 signatures10 58 Modifies the context of a thread in another process (thread injection) 20->58 60 Maps a DLL or memory area into another process 20->60 62 Sample uses process hollowing technique 20->62 64 Queues an APC in another process (thread injection) 20->64 23 explorer.exe 20->23 injected process11 process12 25 control.exe 23->25         started        signatures13 66 Modifies the context of a thread in another process (thread injection) 25->66 68 Maps a DLL or memory area into another process 25->68 70 Tries to detect virtualization through RDTSC time measurements 25->70 28 explorer.exe 18 25->28         started        30 cmd.exe 25->30         started        process14
Detection:
formbook
Create hunting rule
Link:
https://mwdb.cert.pl/sample/7eabaf779e36ce7e5cb42d2a7714cd1b781b50136cce8678c038f30d5c64d382/
Threat name:
Document-Office.Exploit.CVE-2017-11882
Create hunting rule
Status:
Malicious
First seen:
2022-08-01 18:58:56 UTC
File Type:
Document
Extracted files:
5
AV detection:
15 of 26 (57.69%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=p2v26546g3hh4xfufuvhofgndn4bwuatnthim6gahdzq2xde2oba._file
Result
Malware family:
xloader
Create hunting rule
Score:
  10/10
Tags:
family:xloader loader rat
Link:
https://tria.ge/reports/220802-r8p7tsgad4/
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: 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
Checks computer location settings
Loads dropped DLL
Uses the VBS compiler for execution
Blocklisted process makes network request
Downloads MZ/PE file
Executes dropped EXE
Xloader payload
Xloader
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Legit
Score:
0.05
Link:
https://yomi.yoroi.company/submissions/7eabaf779e36ce7e5cb42d2a7714cd1b781b50136cce8678c038f30d5c64d382

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_RTF_Header_Anomaly_RID2F7F
Create hunting rule
Author:Florian Roth
Description:Detects malformed RTF header often used to trick mechanisms that check for a full RTF header
Reference:https://twitter.com/ItsReallyNick/status/975705759618158593

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 7eabaf779e36ce7e5cb42d2a7714cd1b781b50136cce8678c038f30d5c64d382

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/2263678/
  
Delivery method
Distributed via web download

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