MalwareBazaar Database
You are currently viewing the MalwareBazaar entry for SHA256 25e7a5ff8ca830bccda9a6617b31fb3992d4f780444cf3adc8cfb8056f26dd58. 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
| SHA256 hash: | 25e7a5ff8ca830bccda9a6617b31fb3992d4f780444cf3adc8cfb8056f26dd58 |
|---|---|
| SHA3-384 hash: | ea9e617065a2a2d20f41ac89fb616e71b4a964d4c3cea27e62ab57c610250cb1d18767c59bc60f696c311d95187a636d |
| SHA1 hash: | f9e93ed382d3005a7575443369207f2c3339309b |
| MD5 hash: | 138d7d8a55bef05ac6368488b3c9630d |
| humanhash: | december-comet-island-lamp |
| File name: | RFQ-T56797W_1.xlsx |
| Download: | download sample |
| Signature | Formbook |
| File size: | 1'228'030 bytes |
| First seen: | 2023-11-14 12:24:09 UTC |
| Last seen: | 2023-11-14 12:24:10 UTC |
| File type: |  xlsx |
| MIME type: | application/vnd.openxmlformats-officedocument.spreadsheetml.sheet |
| ssdeep | 12288:YWdBCwo3NVvUP/hkRQFTvW7HKReRSR0H8CK/+d5NUzsChpgUWxt7HCZoUPYG0hmL:YgtI/u/httvKaey0cgzobrhPEm+RlDS |
| TLSH | T10D4533A1D3AD958F6BA4C06426E45AC6212FFD9C95A339BD12B0E8C758093C7DF3F160 |
| TrID | 60.1% (.XLSX) Excel Microsoft Office Open XML Format document (34000/1/7) 30.9% (.ZIP) Open Packaging Conventions container (17500/1/4) 7.0% (.ZIP) ZIP compressed archive (4000/1) 1.7% (.PG/BIN) PrintFox/Pagefox bitmap (640x800) (1000/1) |
| Reporter |  TeamDreier |
| Tags: | CVE-2017-11882 FormBook xlsx |
Office OLE Information
This malware samples appears to be an Office document. The following table provides more information about this document using oletools and oledump.
OLE dump
MalwareBazaar was able to identify 3 sections in this file using oledump:
| Section ID | Section size | Section name |
|---|---|---|
| A1 | 1462179 bytes | oLE10NAtIvE |
| A2 | 0 bytes | WfMtcrVR |
Intelligence
File Origin
# of uploads :
2
# of downloads :
888
Origin country :
DKVendor Threat Intelligence
Detection:
n/a
Result
Verdict:
Malware
Maliciousness:
Behaviour
Searching for the window
Sending a custom TCP request
Creating a window
Searching for synchronization primitives
Launching a process
Creating a file in the %AppData% directory
Creating a file in the %temp% directory
Сreating synchronization primitives
Launching cmd.exe command interpreter
Query of malicious DNS domain
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:
OOXML Excel File with Embedding Objects
Behaviour
BlacklistAPI detected
Verdict:
Malicious
Threat level:
10/10
Confidence:
89%
Tags:
embedequation exploit shellcode
Verdict:
Malicious
Labled as:
CVE-2017-11882
Label:
Malicious
Suspicious Score:
9.8/10
Score Malicious:
99%
Score Benign:
1%
Result
Verdict:
MALICIOUS
Link:
Details
Document With No Content
Document contains little or no semantic information.
Result
Threat name:
FormBook, NSISDropper
Detection:
malicious
Classification:
troj.expl.evad
Score:
100 / 100
Signature
Antivirus / Scanner detection for submitted sample
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Detected unpacking (changes PE section rights)
Found evasive API chain (may stop execution after reading information in the PEB, e.g. number of processors)
Found malware configuration
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 domain / URL
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
Yara detected NSISDropper
Behaviour
Behavior Graph:
Detection:
cve-2017-11882-shellcode
Threat name:
Document-Office.Exploit.CVE-2017-11882
Status:
Malicious
First seen:
2023-11-14 12:25:09 UTC
File Type:
Document
Extracted files:
16
AV detection:
24 of 38 (63.16%)
Threat level:
5/5
Detection(s):
Suspicious file
Result
Malware family:
n/a
Score:
8/10
Tags:
n/a
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 use of FindShellTrayWindow
Suspicious use of SetWindowsHookEx
Uses Task Scheduler COM API
Uses Volume Shadow Copy WMI provider
Uses Volume Shadow Copy service COM API
Blocklisted process makes network request
Malware family:
FormBook
Verdict:
Malicious
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Malicious File
Score:
1.00
File information
The table below shows additional information about this malware sample such as delivery method and external references.
Malspam
Delivery method
Distributed via e-mail attachment
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