MalwareBazaar Database
You are currently viewing the MalwareBazaar entry for SHA256 6e4c51b9970a9bffd4c0d75b034a8640d59e41b600698ba68622862e26a513ae. 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
SilentBuilder
Vendor detections: 8
| SHA256 hash: | 6e4c51b9970a9bffd4c0d75b034a8640d59e41b600698ba68622862e26a513ae |
|---|---|
| SHA3-384 hash: | 9678679e164540e7d1513c162ec58dc147fd2bb244bb42989f87d5731d3e44bc7aebbe5b342d9b4f53095e84a5efd1ed |
| SHA1 hash: | 0c2e4f9e73124c6f777ba47405b994ceca27b408 |
| MD5 hash: | ee6f46bffab13b0b79571b649e954757 |
| humanhash: | diet-blossom-wisconsin-delta |
| File name: | statistic-482095214.xls |
| Download: | download sample |
| Signature | SilentBuilder |
| File size: | 375'808 bytes |
| First seen: | 2021-05-12 14:56:39 UTC |
| Last seen: | 2021-05-12 15:01:04 UTC |
| File type: |  xls |
| MIME type: | application/vnd.ms-excel |
| ssdeep | 3072:Q8USKE+Y6t/BI/s/C/i/R/7/3/UQ/OhP/2/a/1/I/T/2zfOTfFG4l+s2/7nU5BLS:vUSIt6Uqa5DPdG9uS9QLA4l+sBDw |
| TLSH | 098442857526483AE7160F73F0EE4DA85BB6ED10964F5A8B3F4AF30C9F71340A913686 |
| Reporter |  JAMESWT_WT |
| Tags: | Qakbot qbot Quakbot SilentBuilder 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 |
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 | 363303 bytes | Book |
Intelligence
File Origin
# of uploads :
2
# of downloads :
209
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
statistic-482095214.xls
Verdict:
Malicious activity
Analysis date:
2021-05-12 14:59:56 UTC
Tags:
macros maldoc-42
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
Detection:
n/a
Result
Verdict:
Malicious
File Type:
Legacy Office File
Payload URLs
URL
File name
xlfn.AGGREGATE
Book
Result
Verdict:
SUSPICIOUS
Link:
Result
Threat name:
Hidden Macro 4.0
Detection:
malicious
Classification:
expl.evad
Score:
68 / 100
Signature
Document exploit detected (process start blacklist hit)
Document exploit detected (UrlDownloadToFile)
Found abnormal large hidden Excel 4.0 Macro sheet
Found Excel 4.0 Macro with suspicious formulas
Office document tries to convince victim to disable security protection (e.g. to enable ActiveX or Macros)
Sigma detected: Microsoft Office Product Spawning Windows Shell
Behaviour
Behavior Graph:
Detection(s):
Suspicious file
Result
Malware family:
n/a
Score:
10/10
Tags:
n/a
Behaviour
Checks processor information in registry
Enumerates system info in registry
Modifies Internet Explorer settings
Suspicious behavior: AddClipboardFormatListener
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Process spawned unexpected child process
Malware Config
Dropper Extraction:
https://escolamundoazul.com.br/ntmQmwXnc6KC/ue.html
https://laresumeservice.com/wp7rTKrY/ue.html
https://laresumeservice.com/wp7rTKrY/ue.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Trojan
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: | crime_win32_ransom_avaddon_1 |
|---|---|
| Author: | @VK_Intel |
| Description: | Detects Avaddon ransomware |
| Reference: | https://twitter.com/VK_Intel/status/1300944441390370819 |
| Rule name: | Email_stealer_bin_mem |
|---|---|
| Author: | James_inthe_box |
| Description: | Email in files like avemaria |
| Rule name: | INDICATOR_DOC_PhishingPatterns |
|---|---|
| Author: | ditekSHen |
| Description: | Detects OLE, RTF, PDF and OOXML (decompressed) documents with common phishing strings |
| Rule name: | IPPort_combo_mem |
|---|---|
| Author: | James_inthe_box |
| Description: | IP and port combo |
| Rule name: | multiple_concats_in_excel4_exec_enjoy_the_silence |
|---|---|
| Author: | Will Metcalf |
| Description: | Behold The Great And Powerful Match Iterator. Multiple Concats with register Function SILENT BUILDER EDITION |
| Reference: | https://blog.reversinglabs.com/blog/excel-4.0-macros |
| Rule name: | Ping_Del_method_bin_mem |
|---|---|
| Author: | James_inthe_box |
| Description: | cmd ping IP nul del |
| Rule name: | Select_from_enumeration |
|---|---|
| Author: | James_inthe_box |
| Description: | IP and port combo |
| Rule name: | SharedStrings |
|---|---|
| Author: | Katie Kleemola |
| Description: | Internal names found in LURK0/CCTV0 samples |
| Rule name: | silentbuilder_03_11 |
|---|---|
| Author: | James Quinn |
| Description: | SilentBuilder xls sheets |
| Rule name: | silentbuilder_03_17 |
|---|---|
| Author: | James Quinn |
| Description: | SilentBuilder xls sheets |
| Rule name: | UAC_bypass_bin_mem |
|---|---|
| Author: | James_inthe_box |
| Description: | UAC bypass in files like avemaria |
File information
The table below shows additional information about this malware sample such as delivery method and external references.
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