MalwareBazaar Database
You are currently viewing the MalwareBazaar entry for SHA256 13063a496da7e490f35ebb4f24a138db4551d48a1d82c0c876906a03b8e83e05. 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: 10
| SHA256 hash: | 13063a496da7e490f35ebb4f24a138db4551d48a1d82c0c876906a03b8e83e05 |
|---|---|
| SHA3-384 hash: | 2ee41a69610876f8e154840bacaaef86e13e2a7caaa82bda0ccfcebc67865edf81eb05bb09497d32aa423ccfc7125332 |
| SHA1 hash: | 52d13613796b8df4c94012872085f37f744e1fcf |
| MD5 hash: | 02efd596d71089ed8db9062b5adb762f |
| humanhash: | table-enemy-texas-two |
| File name: | Remittance_Advice_USD35,949.xlsx |
| Download: | download sample |
| Signature | Formbook |
| File size: | 271'432 bytes |
| First seen: | 2021-10-26 09:00:04 UTC |
| Last seen: | Never |
| File type: |  xlsx |
| MIME type: | application/encrypted |
| ssdeep | 6144:ohwYZg5IjsEb3tYhmxEYE9x5faGaGN2Ko836hl3oPAdZbcT:owYy5IwqymxK9xhaGaG4x836HogZY |
| TLSH | T12F44BF3181196326F096B5BEA798BC680BD9CCBD6CC961FC1F05B607C4B61398CF29E4 |
| Reporter |  abuse_ch |
| Tags: | CVE-2017-11882 FormBook VelvetSweatshop 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
| Detection: VelvetSweatshop |
MalwareBazaar was able to identify 6 sections in this file using oledump:
| Section ID | Section size | Section name |
|---|---|---|
| 1 | 64 bytes | DataSpaces/DataSpaceInfo/StrongEncryptionDataSpace |
| 2 | 112 bytes | DataSpaces/DataSpaceMap |
| 3 | 208 bytes | DataSpaces/TransformInfo/StrongEncryptionTransform/Primary |
| 4 | 76 bytes | DataSpaces/Version |
| 5 | 264776 bytes | EncryptedPackage |
| 6 | 224 bytes | EncryptionInfo |
Intelligence
File Origin
# of uploads :
1
# of downloads :
201
Origin country :
n/a
Vendor Threat Intelligence
Verdict:
Malicious
File type:
application/vnd.openxmlformats-officedocument.spreadsheetml.sheet
Has a screenshot:
False
Contains macros:
False
Detection:
Formbook
Detection(s):
Result
Verdict:
Malicious
File Type:
OOXML Excel File with Embedding Objects in Encrypted Excel File
Document image
Image:
Verdict:
Unknown
Threat level:
0/10
Confidence:
100%
Result
Verdict:
MALICIOUS
Link:
Details
Macro Execution Coercion
Detected a document that appears to social engineer the user into activating embedded logic.
Document With No Content
Document contains little or no semantic information.
Result
Threat name:
Unknown
Detection:
malicious
Classification:
expl
Score:
96 / 100
Signature
Drops PE files to the user root directory
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Office equation editor drops PE file
Office equation editor starts processes (likely CVE 2017-11882 or CVE-2018-0802)
Sigma detected: Droppers Exploiting CVE-2017-11882
Sigma detected: EQNEDT32.EXE connecting to internet
Sigma detected: Execution from Suspicious Folder
Sigma detected: File Dropped By EQNEDT32EXE
Behaviour
Behavior Graph:
Threat name:
Document-OLE.Exploit.CVE-2017-11882
Status:
Malicious
First seen:
2021-10-26 09:00:10 UTC
AV detection:
12 of 44 (27.27%)
Threat level:
5/5
Detection(s):
Suspicious file
Result
Malware family:
xloader
Score:
10/10
Tags:
family:xloader campaign:n8rn loader persistence rat
Behaviour
Checks processor information in registry
Enumerates system info in registry
Launches Equation Editor
Modifies Internet Explorer settings
Modifies registry class
Modifies registry key
Suspicious behavior: AddClipboardFormatListener
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Suspicious use of SetThreadContext
Adds Run key to start application
Loads dropped DLL
Uses the VBS compiler for execution
Blocklisted process makes network request
Downloads MZ/PE file
Executes dropped EXE
Xloader Payload
Xloader
Malware Config
C2 Extraction:
http://www.mgav26.xyz/n8rn/
Verdict:
Malicious
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Formbook
Score:
1.00
File information
The table below shows additional information about this malware sample such as delivery method and external references.
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