MalwareBazaar Database
You are currently viewing the MalwareBazaar entry for SHA256 35eabe9993c9b53c23015aadaba9ba235700833c3abb7838cf57d3dcaa755d2b. 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
QuasarRAT
Vendor detections: 14
Maldoc score: 23
| SHA256 hash: | 35eabe9993c9b53c23015aadaba9ba235700833c3abb7838cf57d3dcaa755d2b |
|---|---|
| SHA3-384 hash: | c581b05017b654ec2d84dd4e035c4bf2239ab0999469ebbee709b9f2479f0e0d52b40f171f0586f44f3504502b5c63ed |
| SHA1 hash: | da791b584aae4e9e758d0f0017a6a10ce87ba998 |
| MD5 hash: | e857427326fd363dfca42fdf53167e0f |
| humanhash: | comet-foxtrot-cold-emma |
| File name: | Paga_Facturas.xls |
| Download: | download sample |
| Signature | QuasarRAT |
| File size: | 83'968 bytes |
| First seen: | 2025-06-07 13:22:48 UTC |
| Last seen: | Never |
| File type: |  xls |
| MIME type: | application/vnd.ms-excel |
| ssdeep | 1536:nlxEtjPOtioVjDGUU1qfDlaGGx+cL2QnAjuDJgTHJJnm2kt+M2kpAw0AZQfP1tGT:nlxEtjPOtioVjDGUU1qfDlaGGx+cL2QG |
| Threatray | 77 similar samples on MalwareBazaar |
| TLSH | T1ED833A37B694C807D968133248E2C396B673FC890E7E53073298F72E2B7B5D4961391A |
| TrID | 46.5% (.XLS) Microsoft Excel sheet (alternate) (56500/1/4) 26.7% (.XLS) Microsoft Excel sheet (32500/1/3) 20.1% (.XLS) Microsoft Excel sheet (alternate) (24500/1/2) 6.5% (.) Generic OLE2 / Multistream Compound (8000/1) |
| Magika | xls |
| Reporter |  abuse_ch |
| Tags: | QuasarRAT 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
| Maldoc score: 23 |
OLE dump
MalwareBazaar was able to identify 16 sections in this file using oledump:
| Section ID | Section size | Section name |
|---|---|---|
| 1 | 107 bytes | CompObj |
| 2 | 244 bytes | DocumentSummaryInformation |
| 3 | 208 bytes | SummaryInformation |
| 4 | 63088 bytes | Workbook |
| 5 | 515 bytes | _VBA_PROJECT_CUR/PROJECT |
| 6 | 89 bytes | _VBA_PROJECT_CUR/PROJECTwm |
| 7 | 977 bytes | _VBA_PROJECT_CUR/VBA/Sheet1 |
| 8 | 977 bytes | _VBA_PROJECT_CUR/VBA/Sheet2 |
| 9 | 977 bytes | _VBA_PROJECT_CUR/VBA/Sheet3 |
| 10 | 3274 bytes | _VBA_PROJECT_CUR/VBA/_VBA_PROJECT |
| 11 | 1532 bytes | _VBA_PROJECT_CUR/VBA/__SRP_0 |
| 12 | 334 bytes | _VBA_PROJECT_CUR/VBA/__SRP_1 |
| 13 | 416 bytes | _VBA_PROJECT_CUR/VBA/__SRP_2 |
| 14 | 382 bytes | _VBA_PROJECT_CUR/VBA/__SRP_3 |
| 15 | 548 bytes | _VBA_PROJECT_CUR/VBA/dir |
| 16 | 4080 bytes | _VBA_PROJECT_CUR/VBA/dtnigef |
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 |
| IOC | shell32.dll | Executable file name code and P-code are different, this may have been used to hide malicious code |
| Suspicious | Environ | May read system environment variables |
| Suspicious | open | May open a file |
| Suspicious | vbNormalFocus | May run an executable file or a system command |
| Suspicious | ShellExecuteA | May run an executable file or a system command |
| Suspicious | shell32 | May run an executable file or a system command |
| Suspicious | Lib | May run code from a DLL |
| Suspicious | URLDownloadToFileA | May download files from the Internet |
| Suspicious | Chr | May attempt to obfuscate specific strings (use option --deobf to deobfuscate) |
| Suspicious | StrReverse | May attempt to obfuscate specific strings (use option --deobf to deobfuscate) |
| Suspicious | Hex Strings | Hex-encoded strings were detected, may be used to obfuscate strings (option --decode to see all) |
| Suspicious | Base64 Strings | Base64-encoded strings were detected, may be used to obfuscate strings (option --decode to see all) |
Intelligence
File Origin
# of uploads :
1
# of downloads :
448
Origin country :
NLVendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
Paga_Facturas.xls
Verdict:
No threats detected
Analysis date:
2025-06-07 13:25:59 UTC
Tags:
macros macros-on-open
Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
n/a
Verdict:
Malicious
Score:
92.5%
Tags:
office macro micro
Result
Verdict:
Malware
Maliciousness:
Behaviour
Searching for the window
Creating a window
Сreating synchronization primitives
Connection attempt to an infection source by exploiting the app vulnerability
Creating a file in the %AppData% directory
Using the Windows Management Instrumentation requests
Creating a file
Creating a file in the %AppData% subdirectories
Enabling the 'hidden' option for recently created files
Searching for synchronization primitives
Launching the default Windows debugger (dwwin.exe)
Query of malicious DNS domain
Launching a file downloaded from the Internet
Unauthorized injection to a recently created process
Unauthorized injection to a recently created process by context flags manipulation
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Sending a TCP request to an infection source by exploiting the app vulnerability
Creating a process from a recently created file
Result
Verdict:
Malicious
File Type:
Legacy Excel File with Macro
Behaviour
BlacklistAPI detected
Document image
Image:
Verdict:
Malicious
Labled as:
GT:VB.Cridex.1
Gathering data
Result
Verdict:
MALICIOUS
Link:
Details
Macro with Startup Hook
Detected macro logic that will automatically execute on document open. Most malware contains some execution hook.
Document With Minimal Content
Document contains less than 1 kilobyte of semantic information.
Macro Contains Suspicious String
Detected a macro with a suspicious string. Suspicious strings include privileged function calls, obfuscations, odd registry keys, etc...
Macro with DLL Reference
Detected macro logic that will load additional functionality from Dynamically Linked Libraries (DLLs). While not explicitly malicious, this is a common tactic for accessing APIs that are not otherwised exposed via Visual Basic for Applications (VBA).
Result
Threat name:
Quasar
Detection:
malicious
Classification:
troj.expl.evad
Score:
100 / 100
Signature
.NET source code contains potential unpacker
Antivirus detection for dropped file
Document contains an embedded VBA macro which may execute processes
Document contains an embedded VBA macro with suspicious strings
Document contains VBA stomped code (only p-code) potentially bypassing AV detection
Document exploit detected (process start blacklist hit)
Document exploit detected (UrlDownloadToFile)
Found malware configuration
Hides that the sample has been downloaded from the Internet (zone.identifier)
Injects a PE file into a foreign processes
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for submitted file
Sample uses string decryption to hide its real strings
Sigma detected: Suspicious Binary In User Directory Spawned From Office Application
Sigma detected: Suspicious Microsoft Office Child Process
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Uses schtasks.exe or at.exe to add and modify task schedules
Uses threadpools to delay analysis
Yara detected Quasar RAT
Behaviour
Behavior Graph:
Score:
100%
Verdict:
Malware
File Type:
OFFICE
Verdict:
Malicious
Threat name:
Script-Macro.Trojan.Znyonm
Status:
Malicious
First seen:
2025-06-07 13:23:18 UTC
File Type:
Document
Extracted files:
24
AV detection:
15 of 24 (62.50%)
Threat level:
5/5
Detection(s):
Suspicious file
Verdict:
malicious
Label(s):
quasarrat
Similar samples:
+ 67 additional samples on MalwareBazaar
Result
Malware family:
n/a
Score:
8/10
Tags:
macro macro_on_action
Behaviour
Checks processor information in registry
Enumerates system info in registry
Suspicious behavior: AddClipboardFormatListener
Suspicious use of SetWindowsHookEx
Verdict:
Suspicious
Tags:
n/a
YARA:
n/a
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: | DebuggerCheck__API |
|---|---|
| Reference: | https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara |
| Rule name: | DebuggerException__SetConsoleCtrl |
|---|---|
| Reference: | https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara |
| Rule name: | golang_bin_JCorn_CSC846 |
|---|---|
| Author: | Justin Cornwell |
| Description: | CSC-846 Golang detection ruleset |
| Rule name: | informational_win_ole_protected |
|---|---|
| Author: | Jeff White (karttoon@gmail.com) @noottrak |
| Description: | Identify OLE Project protection within documents. |
File information
The table below shows additional information about this malware sample such as delivery method and external references.
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