MalwareBazaar Database
You are currently viewing the MalwareBazaar entry for SHA256 5fdb1b3df88e49123804cb3cbdfee96b1e29371ca7ac6f27e3c57228a563aa10. 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
BuerLoader
Vendor detections: 5
| SHA256 hash: | 5fdb1b3df88e49123804cb3cbdfee96b1e29371ca7ac6f27e3c57228a563aa10 |
|---|---|
| SHA3-384 hash: | 07da0a31a9cece4d2b5104a9717e8aa762b71c1bcd7ee6adfe8a9bd1d986cb5217af22499460c4e08b037269d67becf9 |
| SHA1 hash: | 23aba1aaf9d35894333fe29c86f76a236f602bdd |
| MD5 hash: | 7e15415b138af90c8388aa309276ef7e |
| humanhash: | mobile-artist-hotel-ack |
| File name: | Invoice267782.xls |
| Download: | download sample |
| Signature | BuerLoader |
| File size: | 260'608 bytes |
| First seen: | 2021-02-03 09:02:48 UTC |
| Last seen: | 2021-02-03 11:22:57 UTC |
| File type: |  xls |
| MIME type: | application/vnd.ms-excel |
| ssdeep | 3072:pzd91KD4M1cyYO6mBzEPGCF2j8QOt4kq53EEEEEEEE5:pzdKsMsmBzE8HOtG53EEEEEEEE5 |
| TLSH | D5446A958C55656FD2B3BBF28D0AAC2C82F8658B1C711AB6B1B053D1345128CFB1CADF |
| Reporter |  ffforward |
| Tags: | Buer BuerLoader xls |
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 id
| Application name is Microsoft Excel |
| Office document is in OLE format |
| Office document is in encrypted |
OLE dump
MalwareBazaar was able to identify 3 sections in this file using oledump:
| Section ID | Section size | Section name |
|---|---|---|
| 1 | 4096 bytes | DocumentSummaryInformation |
| 2 | 4096 bytes | SummaryInformation |
| 3 | 249144 bytes | Book |
Intelligence
File Origin
# of uploads :
2
# of downloads :
215
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
Invoice267782.xls
Verdict:
No threats detected
Analysis date:
2021-02-03 09:05:49 UTC
Tags:
macros macros40
Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Verdict:
Malicious
File type:
application/vnd.ms-excel
Has a screenshot:
False
Contains macros:
False
Result
Verdict:
Suspicious
File Type:
Legacy Office File
Result
Verdict:
UNKNOWN
Details
Excel 4.0 Macro
Document contains Excel 4.0 macros (XLM). A valid, albeit dated feature, this document should be treated with suspicion.
Result
Threat name:
Unknown
Detection:
malicious
Classification:
expl.evad
Score:
100 / 100
Signature
Detected RDTSC dummy instruction sequence (likely for instruction hammering)
Document exploit detected (creates forbidden files)
Document exploit detected (drops PE files)
Document exploit detected (process start blacklist hit)
Document exploit detected (UrlDownloadToFile)
Maps a DLL or memory area into another process
Multi AV Scanner detection for domain / URL
Multi AV Scanner detection for dropped file
Office document tries to convince victim to disable security protection (e.g. to enable ActiveX or Macros)
Office process drops PE file
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Tries to detect virtualization through RDTSC time measurements
Behaviour
Behavior Graph:
Result
Malware family:
n/a
Score:
8/10
Tags:
macro xlm
Behaviour
Checks processor information in registry
Enumerates system info in registry
Modifies Internet Explorer settings
Suspicious behavior: AddClipboardFormatListener
Suspicious behavior: GetForegroundWindowSpam
Suspicious use of SetWindowsHookEx
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
exe 
Delivery method
Distributed via e-mail attachment
Comments
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