MalwareBazaar Database
You are currently viewing the MalwareBazaar entry for SHA256 9a1a07caef95485ed3b67cee28cd179755ae10003978601bf3173c31ea5b603b. 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: 18
Maldoc score: 25
| SHA256 hash: | 9a1a07caef95485ed3b67cee28cd179755ae10003978601bf3173c31ea5b603b |
|---|---|
| SHA3-384 hash: | 92c5b42a5b5c07287e820a8dc7e1527a55222fe4a0d98608d455b505c17782c2bca20e7ca21c6fc083c29955c2e081fa |
| SHA1 hash: | a35edba7014afb0f0c01930346dad0653966655f |
| MD5 hash: | 9c834c208d4f109e1e9e1ec0386525da |
| humanhash: | carolina-montana-speaker-alaska |
| File name: | Transaccion_SWIFT.xls |
| Download: | download sample |
| Signature | QuasarRAT |
| File size: | 64'512 bytes |
| First seen: | 2025-07-26 17:58:42 UTC |
| Last seen: | Never |
| File type: |  xls |
| MIME type: | application/vnd.ms-excel |
| ssdeep | 1536:/WxEtjPOtioVjDGUU1qfDlaGGx+cL2QnAZxrd7s+miHm2hOZyL:/WxEtjPOtioVjDGUU1qfDlaGGx+cL2Qs |
| Threatray | 142 similar samples on MalwareBazaar |
| TLSH | T1E253A5967685D8C5DA4847350CE7C2E66727BC019F5B87CB328CB71E2F716808CD2A5B |
| 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: 25 |
OLE dump
MalwareBazaar was able to identify 17 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 | 36384 bytes | Workbook |
| 5 | 562 bytes | _VBA_PROJECT_CUR/PROJECT |
| 6 | 128 bytes | _VBA_PROJECT_CUR/PROJECTwm |
| 7 | 817 bytes | _VBA_PROJECT_CUR/VBA/Module1 |
| 8 | 977 bytes | _VBA_PROJECT_CUR/VBA/Sheet1 |
| 9 | 977 bytes | _VBA_PROJECT_CUR/VBA/Sheet2 |
| 10 | 977 bytes | _VBA_PROJECT_CUR/VBA/Sheet3 |
| 11 | 6814 bytes | _VBA_PROJECT_CUR/VBA/ThisWorkbook |
| 12 | 6686 bytes | _VBA_PROJECT_CUR/VBA/_VBA_PROJECT |
| 13 | 1413 bytes | _VBA_PROJECT_CUR/VBA/__SRP_0 |
| 14 | 211 bytes | _VBA_PROJECT_CUR/VBA/__SRP_1 |
| 15 | 388 bytes | _VBA_PROJECT_CUR/VBA/__SRP_2 |
| 16 | 158 bytes | _VBA_PROJECT_CUR/VBA/__SRP_3 |
| 17 | 614 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 | Open | May open a file |
| Suspicious | Write | May write to a file (if combined with Open) |
| Suspicious | adodb.stream | May create a text file |
| Suspicious | SaveToFile | May create a text file |
| Suspicious | Shell | May run an executable file or a system command |
| Suspicious | WScript.Shell | May run an executable file or a system command |
| Suspicious | CreateObject | May create an OLE object |
| Suspicious | Shell.Application | May run an application (if combined with CreateObject) |
| Suspicious | microsoft.xmlhttp | May download files from the Internet |
| Suspicious | Chr | May attempt to obfuscate specific strings (use option --deobf to deobfuscate) |
| Suspicious | Xor | 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) code and P-code are different, this may have been used to hide malicious code |
Intelligence
File Origin
# of uploads :
1
# of downloads :
59
Origin country :
SEVendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
Transaccion_SWIFT.xls
Verdict:
Malicious activity
Analysis date:
2025-07-26 17:59:20 UTC
Tags:
macros macros-on-open loader auto-reg confuser crypto-regex
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:
autorun office macro micro
Result
Verdict:
Malware
Maliciousness:
Behaviour
Creating a window
Сreating synchronization primitives
DNS request
Sending an HTTP GET request
Creating a file in the %AppData% subdirectories
Searching for synchronization primitives
Sending a custom TCP request
Creating a file
Enabling the 'hidden' option for recently created files
Launching the default Windows debugger (dwwin.exe)
Connection attempt by exploiting the app vulnerability
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
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
Threat level:
10/10
Confidence:
100%
Tags:
dropper macros macros-on-open
Verdict:
Malicious
Labled as:
Valyria
Label:
Malicious
Suspicious Score:
10/10
Score Malicious:
1%
Score Benign:
0%
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.
Macro with File System Write
Detected macro logic that can write data to the file system.
Document With Minimal Content
Document contains less than 1 kilobyte of semantic information.
Shell.Application Object
Detected the instantiation of Shell Application object within the macro.
Macro Contains Suspicious String
Detected a macro with a suspicious string. Suspicious strings include privileged function calls, obfuscations, odd registry keys, etc...
Result
Threat name:
Quasar
Detection:
malicious
Classification:
troj.expl.evad
Score:
100 / 100
Signature
Antivirus / Scanner detection for submitted sample
Antivirus detection for dropped file
Document contains an embedded VBA macro with suspicious strings
Document contains an embedded VBA with functions possibly related to ADO stream file operations
Document contains an embedded VBA with functions possibly related to HTTP operations
Document contains an embedded VBA with hexadecimal encoded strings
Document contains VBA stomped code (only p-code) potentially bypassing AV detection
Document exploit detected (process start blacklist hit)
Found malware configuration
Hides that the sample has been downloaded from the Internet (zone.identifier)
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for submitted file
Office process queries suspicious COM object (likely to drop second stage)
PE file has nameless sections
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 known network protocols on non-standard ports
Uses schtasks.exe or at.exe to add and modify task schedules
Yara detected Quasar RAT
Behaviour
Behavior Graph:
Score:
100%
Verdict:
Malware
File Type:
OFFICE
Verdict:
Malware
YARA:
6 match(es)
Tags:
adodb.stream ATT&CK T1564.007 Blacklist VBA DeObfuscated Malicious Malicious Document microsoft.xmlhttp Obfuscated Office Document Shell.Application T1059.005 VBA Stomping VBScript WScript.Shell
Threat name:
Script-Macro.Trojan.Valyria
Status:
Malicious
First seen:
2025-07-26 16:39:20 UTC
File Type:
Document
Extracted files:
29
AV detection:
21 of 34 (61.76%)
Threat level:
5/5
Detection(s):
Suspicious file
Verdict:
malicious
Label(s):
quasarrat
Similar samples:
+ 132 additional samples on MalwareBazaar
Result
Malware family:
quasar
Score:
10/10
Tags:
family:quasar botnet:office10 discovery execution macro macro_on_action persistence spyware trojan
Behaviour
Checks processor information in registry
Enumerates system info in registry
Scheduled Task/Job: Scheduled Task
Suspicious behavior: AddClipboardFormatListener
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Program crash
System Location Discovery: System Language Discovery
ConfuserEx .NET packer
Suspicious use of SetThreadContext
Executes dropped EXE
Downloads MZ/PE file
Quasar RAT
Quasar family
Quasar payload
Malware Config
C2 Extraction:
floataboat.strangled.net:4785
ploatvoatin.ydns.eu:4787
ploatvoatin.ydns.eu:4787
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:
iSpy Keylogger
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.
Comments
Login required
You need to login to in order to write a comment. Login with your abuse.ch account.