MalwareBazaar Database
You are currently viewing the MalwareBazaar entry for SHA256 c58344f5409f59dc36f3d14ffcaf30bcdbb2d7f8b3157c016ec0f360836a90a9. 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
Vjw0rm
Vendor detections: 10
Maldoc score: 13
| SHA256 hash: | c58344f5409f59dc36f3d14ffcaf30bcdbb2d7f8b3157c016ec0f360836a90a9 |
|---|---|
| SHA3-384 hash: | 94d07fe5700f1c7df77010abf24f843573bf4e3914c79c2bd0528c735e11d0ca77ba3243ce2ce8b077f34b1a6643ccc1 |
| SHA1 hash: | 1c280f2cd869c61cb03bc5170d1e9ef5462fe398 |
| MD5 hash: | 0fe6e10e4918f1babb2e7d1caa3f3675 |
| humanhash: | pasta-mars-nitrogen-victor |
| File name: | Bloomberg BNA Invoice Enclosed 098476796312.x.xls |
| Download: | download sample |
| Signature | Vjw0rm |
| File size: | 50'176 bytes |
| First seen: | 2022-01-10 16:01:16 UTC |
| Last seen: | Never |
| File type: |  xls |
| MIME type: | application/vnd.ms-excel |
| ssdeep | 1536:aGZk3hOdsylKlgryzc4bNhZFGzE+cL2knEbOfm1Mfa2CH:a4k3hOdsylKlgryzc4bNhZFGzE+cL2kI |
| TLSH | T174339592F296D852C9990B314DE6C2DA7726FC129F62C30B32C9B71F3F796808D13656 |
| Reporter |  abuse_ch |
| Tags: | vjw0rm xls |
Indicators Of Compromise (IOCs)
Below is a list of indicators of compromise (IOCs) associated with this malware samples.
| IOC | ThreatFox Reference |
|---|---|
| http://185.24.233.19:1122/Vre | https://threatfox.abuse.ch/ioc/292285/ |
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
| Maldoc score: 13 |
OLE dump
MalwareBazaar was able to identify 28 sections in this file using oledump:
| Section ID | Section size | Section name |
|---|---|---|
| 1 | 107 bytes | CompObj |
| 2 | 20 bytes | Ole |
| 3 | 236 bytes | DocumentSummaryInformation |
| 4 | 132 bytes | SummaryInformation |
| 5 | 19587 bytes | Workbook |
| 6 | 735 bytes | _VBA_PROJECT_CUR/PROJECT |
| 7 | 179 bytes | _VBA_PROJECT_CUR/PROJECTwm |
| 8 | 1313 bytes | _VBA_PROJECT_CUR/VBA/Module1 |
| 9 | 2182 bytes | _VBA_PROJECT_CUR/VBA/Module2 |
| 10 | 986 bytes | _VBA_PROJECT_CUR/VBA/Module3 |
| 11 | 1887 bytes | _VBA_PROJECT_CUR/VBA/Module4 |
| 12 | 999 bytes | _VBA_PROJECT_CUR/VBA/Sheet1 |
| 13 | 1180 bytes | _VBA_PROJECT_CUR/VBA/Sheet2 |
| 14 | 1416 bytes | _VBA_PROJECT_CUR/VBA/ThisWorkbook |
| 15 | 3578 bytes | _VBA_PROJECT_CUR/VBA/_VBA_PROJECT |
| 16 | 3258 bytes | _VBA_PROJECT_CUR/VBA/__SRP_0 |
| 17 | 312 bytes | _VBA_PROJECT_CUR/VBA/__SRP_1 |
| 18 | 317 bytes | _VBA_PROJECT_CUR/VBA/__SRP_4 |
| 19 | 156 bytes | _VBA_PROJECT_CUR/VBA/__SRP_5 |
| 20 | 963 bytes | _VBA_PROJECT_CUR/VBA/__SRP_6 |
| 21 | 156 bytes | _VBA_PROJECT_CUR/VBA/__SRP_7 |
| 22 | 432 bytes | _VBA_PROJECT_CUR/VBA/__SRP_8 |
| 23 | 106 bytes | _VBA_PROJECT_CUR/VBA/__SRP_9 |
| 24 | 249 bytes | _VBA_PROJECT_CUR/VBA/__SRP_a |
| 25 | 156 bytes | _VBA_PROJECT_CUR/VBA/__SRP_b |
| 26 | 697 bytes | _VBA_PROJECT_CUR/VBA/__SRP_c |
| 27 | 156 bytes | _VBA_PROJECT_CUR/VBA/__SRP_d |
| 28 | 657 bytes | _VBA_PROJECT_CUR/VBA/dir |
OLE vba
MalwareBazaar was able to extract and deobfuscate VBA script(s) the following information from OLE objects embedded in this file using olevba:
| Type | Keyword | Description |
|---|---|---|
| AutoExec | Workbook_Open | Runs when the Excel Workbook is opened |
| Suspicious | Write | May write to a file (if combined with Open) |
| Suspicious | CreateTextFile | May create a text file |
| Suspicious | Shell | May run an executable file or a system command |
| Suspicious | vbNormalFocus | May run an executable file or a system command |
| Suspicious | CreateObject | May create an OLE object |
| Suspicious | Hex Strings | Hex-encoded strings were detected, may be used to obfuscate strings (option --decode to see all) |
Intelligence
File Origin
# of uploads :
1
# of downloads :
521
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
Bloomberg BNA Invoice Enclosed 098476796312.x.xls
Verdict:
Malicious activity
Analysis date:
2022-01-10 16:03:27 UTC
Tags:
macros macros-on-open trojan vjworm
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:
True
Detection:
n/a
Result
Verdict:
Malware
Maliciousness:
Behaviour
Searching for the window
DNS request
Creating a window
Сreating synchronization primitives
Creating a file
Using the Windows Management Instrumentation requests
Sending an HTTP POST request
Launching a process by exploiting the app vulnerability
Enabling autorun by creating a file
Result
Verdict:
Malicious
File Type:
Legacy Excel File with Macro
Payload URLs
URL
File name
91.24.92.19
WorkBook
Verdict:
Malicious
Threat level:
10/10
Confidence:
75%
Tags:
anti-vm excel.exe macros macros-on-open wscript wscript.exe
Result
Threat name:
Unknown
Detection:
malicious
Classification:
troj.expl.evad
Score:
100 / 100
Signature
Document contains a stream with embedded javascript code
Document contains an embedded macro with GUI obfuscation
Document contains an embedded VBA macro which may execute processes
Document contains an embedded VBA macro with suspicious strings
Document contains OLE streams with names of living off the land binaries
Document exploit detected (creates forbidden files)
Document exploit detected (process start blacklist hit)
Drops script or batch files to the startup folder
Machine Learning detection for sample
Microsoft Office drops suspicious files
Queries sensitive service information (via WMI, Win32_LogicalDisk, often done to detect sandboxes)
Sigma detected: Drops script at startup location
Sigma detected: Microsoft Office Product Spawning Windows Shell
System process connects to network (likely due to code injection or exploit)
Uses known network protocols on non-standard ports
Behaviour
Behavior Graph:
Threat name:
Win32.Downloader.Powdow
Status:
Malicious
First seen:
2022-01-10 16:02:07 UTC
File Type:
Document
Extracted files:
37
AV detection:
3 of 43 (6.98%)
Threat level:
3/5
Detection(s):
Malicious file
Result
Malware family:
n/a
Score:
10/10
Tags:
macro macro_on_action
Behaviour
Checks processor information in registry
Enumerates system info in registry
Modifies Internet Explorer settings
Modifies registry class
Suspicious behavior: AddClipboardFormatListener
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Office loads VBA resources, possible macro or embedded object present
Enumerates physical storage devices
Drops startup file
Blocklisted process makes network request
Process spawned unexpected child process
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
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: | BitcoinAddress |
|---|---|
| Author: | Didier Stevens (@DidierStevens) |
| Description: | Contains a valid Bitcoin address |
| Rule name: | TA505_Maldoc_21Nov_2 |
|---|---|
| Author: | Arkbird_SOLG |
| Description: | invitation (1).xls |
| Reference: | https://twitter.com/58_158_177_102/status/1197432303057637377 |
File information
The table below shows additional information about this malware sample such as delivery method and external references.
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