MalwareBazaar Database
You are currently viewing the MalwareBazaar entry for SHA256 3206c73842cc18def9792f97c1bdb6ee85f1a396173999a42aacfa4cdb329146. 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
| SHA256 hash: | 3206c73842cc18def9792f97c1bdb6ee85f1a396173999a42aacfa4cdb329146 |
|---|---|
| SHA3-384 hash: | ad2d2c9f5fe22ecb0b38e62219b11c85c97847a5d379be908df86944d37308a3da67dd6eff34f76936f09479f6ee41a6 |
| SHA1 hash: | 4096f602f50b71a6d671d23c41f4b52dca59c8c8 |
| MD5 hash: | 523638a13e3af95fc2256be66725c682 |
| humanhash: | march-burger-gee-autumn |
| File name: | 523638a13e3af95fc2256be66725c682 |
| Download: | download sample |
| Signature | Formbook |
| File size: | 25'554 bytes |
| First seen: | 2023-06-08 04:46:25 UTC |
| Last seen: | Never |
| File type: |  rtf |
| MIME type: | text/rtf |
| ssdeep | 768:fJnxqB/d7sWct8I0tZJ7dnZlj2OZ52MgalwHC1xetibZqSA0:9xs7sWcuZ7dn/LvtPv/A0 |
| TLSH | T102B2AE5A5B8C4C62F26AE877865EE00E48BCF23230C255C4BD9CE7757B7D14E0B6A1B4 |
| Reporter |  zbetcheckin |
| Tags: | CVE-2017-11882 FormBook rtf |
Intelligence
File Origin
# of uploads :
1
# of downloads :
104
Origin country :
FRVendor Threat Intelligence
Malware family:
formbook
ID:
1
File name:
523638a13e3af95fc2256be66725c682
Verdict:
Malicious activity
Analysis date:
2023-06-08 04:48:24 UTC
Tags:
opendir exploit cve-2017-11882 loader formbook xloader trojan stealer
Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Result
Verdict:
Malware
Maliciousness:
Behaviour
Searching for the window
Sending a custom TCP request
Searching for synchronization primitives
Launching a process
Creating a window
Creating a file
Сreating synchronization primitives
Sending an HTTP GET request
Creating a process from a recently created file
Result
Verdict:
Malicious
File Type:
RTF File
Behaviour
BlacklistAPI detected
Verdict:
Malicious
Threat level:
10/10
Confidence:
100%
Tags:
embedequation evasive exploit packed shellcode
Verdict:
Malicious
Labled as:
CVE-2017-11882
Result
Verdict:
MALICIOUS
Result
Threat name:
FormBook
Detection:
malicious
Classification:
troj.expl.evad
Score:
100 / 100
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
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 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
Snort IDS alert for network traffic
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:
Detection:
cve-2017-11882-shellcode
Threat name:
Document-RTF.Exploit.CVE-2017-11882
Status:
Malicious
First seen:
2023-06-05 09:16:36 UTC
File Type:
Document
Extracted files:
4
AV detection:
16 of 37 (43.24%)
Threat level:
5/5
Detection(s):
Suspicious file
Result
Malware family:
formbook
Score:
10/10
Tags:
family:formbook campaign:btrd rat spyware stealer trojan
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
Executes dropped EXE
Loads dropped DLL
Blocklisted process makes network request
Downloads MZ/PE file
Formbook payload
Formbook
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Malicious File
Score:
1.00
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 |
|---|---|
| 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 |
|---|---|
| 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
Delivery method
Distributed via web download
Comments
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