MalwareBazaar Database
You are currently viewing the MalwareBazaar entry for SHA256 b2a3e7ff64f5872c08c1f71e6dd3ee0b9a51c439725277669fa1eddde9658457. 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: 11
Maldoc score: 25
| SHA256 hash: | b2a3e7ff64f5872c08c1f71e6dd3ee0b9a51c439725277669fa1eddde9658457 |
|---|---|
| SHA3-384 hash: | ea7bab4a6c2de166a4943c09202fcfaf92cc7a38af1ebd8803178aae49d9a3b3154d7ff67e4de6460e75375fb540e521 |
| SHA1 hash: | 53b88bb6891fe2763c2b0d300603d4cb9d4f944e |
| MD5 hash: | 7f37c44dbc7be8d313fb6645e6f1c2fe |
| humanhash: | diet-lithium-april-fruit |
| File name: | Dekontunuz.xls |
| Download: | download sample |
| Signature | QuasarRAT |
| File size: | 97'792 bytes |
| First seen: | 2022-01-31 07:24:44 UTC |
| Last seen: | Never |
| File type: |  xls |
| MIME type: | application/vnd.ms-excel |
| ssdeep | 1536:ErxEtjPOtioVjDGUU1qfDlaGGx+cL2QnArSEWoIS+7yLeV4N0Bsvfc9F//iHi7TA:ErxEtjPOtioVjDGUU1qfDlaGGx+cL2Qu |
| TLSH | T107A35A033985CD07D59883352EE6D2EA7B23FC459E6667C7314CF76F2F766A0884260A |
| Reporter |  abuse_ch |
| Tags: | geo QuasarRAT TUR 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 | 204 bytes | SummaryInformation |
| 4 | 55709 bytes | Workbook |
| 5 | 644 bytes | _VBA_PROJECT_CUR/PROJECT |
| 6 | 128 bytes | _VBA_PROJECT_CUR/PROJECTwm |
| 7 | 833 bytes | _VBA_PROJECT_CUR/VBA/Module1 |
| 8 | 985 bytes | _VBA_PROJECT_CUR/VBA/Sheet1 |
| 9 | 985 bytes | _VBA_PROJECT_CUR/VBA/Sheet2 |
| 10 | 985 bytes | _VBA_PROJECT_CUR/VBA/Sheet3 |
| 11 | 17057 bytes | _VBA_PROJECT_CUR/VBA/ThisWorkbook |
| 12 | 5773 bytes | _VBA_PROJECT_CUR/VBA/_VBA_PROJECT |
| 13 | 2976 bytes | _VBA_PROJECT_CUR/VBA/__SRP_0 |
| 14 | 262 bytes | _VBA_PROJECT_CUR/VBA/__SRP_1 |
| 15 | 3044 bytes | _VBA_PROJECT_CUR/VBA/__SRP_2 |
| 16 | 448 bytes | _VBA_PROJECT_CUR/VBA/__SRP_3 |
| 17 | 612 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 | 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 :
177
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
Dekontunuz.xls
Verdict:
Malicious activity
Analysis date:
2022-01-31 10:53:26 UTC
Tags:
macros macros-on-open maldoc-5
Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
n/a
Result
Verdict:
Malware
Maliciousness:
Behaviour
Searching for the window
DNS request
Creating a window
Сreating synchronization primitives
Creating a file in the %AppData% subdirectories
Launching a process
Creating a process with a hidden window
Running batch commands
Sending an HTTP GET request
Unauthorized injection to a recently created process
Sending a custom TCP request by exploiting the app vulnerability
Creating a process from a recently created file
Result
Verdict:
Malicious
File Type:
Legacy Excel File with Macro
Document image
Image:
Verdict:
Malicious
Threat level:
10/10
Confidence:
100%
Tags:
cmd.exe macros macros-on-open replace.exe
Label:
Malicious
Suspicious Score:
9.9/10
Score Malicious:
99%
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.
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...
Document With Minimal Content
Document contains less than 1 kilobyte of semantic information.
Result
Threat name:
Quasar
Detection:
malicious
Classification:
troj.expl.evad
Score:
100 / 100
Behaviour
Behavior Graph:
n/a
Threat name:
Script-Macro.Trojan.Valyria
Status:
Malicious
First seen:
2022-01-31 07:26:17 UTC
File Type:
Document
Extracted files:
30
AV detection:
16 of 28 (57.14%)
Threat level:
5/5
Detection(s):
Suspicious file
Result
Malware family:
n/a
Score:
8/10
Tags:
macro macro_on_action
Behaviour
Checks processor information in registry
Delays execution with timeout.exe
Enumerates system info in registry
Modifies Internet Explorer settings
Suspicious behavior: AddClipboardFormatListener
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Office loads VBA resources, possible macro or embedded object present
Enumerates physical storage devices
Program crash
Executes dropped EXE
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
Delivery method
Distributed via e-mail attachment
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