MalwareBazaar Database
You are currently viewing the MalwareBazaar entry for SHA256 aa4aaf675694501a5a872a79d8355b177b42016af74254785f091d710c9d284d. 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
AsyncRAT
Vendor detections: 10
Maldoc score: 7
| SHA256 hash: | aa4aaf675694501a5a872a79d8355b177b42016af74254785f091d710c9d284d |
|---|---|
| SHA3-384 hash: | 544b5e2d6bdcb0b1bc8c88f3354b7f5f1cc5062fbd4e750b69aa0162c447ac32ee768587ea8f727fd15634c910373af9 |
| SHA1 hash: | 708bc98c3135b75a9b91649088fabd78d55e9b28 |
| MD5 hash: | 1d8aa0b27989b23885ed13c84deea6ff |
| humanhash: | nuts-dakota-snake-solar |
| File name: | 20210525000678.doc |
| Download: | download sample |
| Signature | AsyncRAT |
| File size: | 17'560 bytes |
| First seen: | 2021-05-25 18:31:14 UTC |
| Last seen: | 2021-05-25 19:03:11 UTC |
| File type: |  doc |
| MIME type: | application/vnd.openxmlformats-officedocument.wordprocessingml.document |
| ssdeep | 384:t2O/toKIzr8+GmvNxt/ZtNN5SK+30OnpAcGW:16rFxllN5v+3BOq |
| TLSH | 2672BF79C918F425DA2786BFE81A25FAF3181802A772E53F3504EBCDCB50653171B9CA |
| Reporter |  abuse_ch |
| Tags: | AsyncRAT doc RAT |
Indicators Of Compromise (IOCs)
Below is a list of indicators of compromise (IOCs) associated with this malware samples.
| IOC | ThreatFox Reference |
|---|---|
| 198.46.177.119:8808 | https://threatfox.abuse.ch/ioc/40751/ |
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: 7 |
OLE dump
MalwareBazaar was able to identify 7 sections in this file using oledump:
| Section ID | Section size | Section name |
|---|---|---|
| A1 | 434 bytes | PROJECT |
| A2 | 65 bytes | PROJECTwm |
| A3 | 2635 bytes | VBA/PvTwgRv |
| A4 | 1245 bytes | VBA/ThisDocument |
| A5 | 2684 bytes | VBA/_VBA_PROJECT |
| A6 | 553 bytes | 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 | Document_Open | Runs when the Word or Publisher document is opened |
| Suspicious | Shell | May run an executable file or a system command |
| 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 :
2
# of downloads :
178
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
20210525000678.doc
Verdict:
No threats detected
Analysis date:
2021-05-25 21:30:49 UTC
Tags:
macros macros-on-open
Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Verdict:
Malicious
File type:
application/msword
Has a screenshot:
False
Contains macros:
True
Detection(s):
MiscreantPunch.EvilMacro.SHRUNWINDOWMATH.182003.UNOFFICIAL
MiscreantPunch.EvilMacro.PSHELLNEWOBJECTw.3.UNOFFICIAL
TwinWave.EvilDoc.DOCXRSTRGOOD.NEW-OBJECT.200322B64.3.UNOFFICIAL
TwinWave.EvilDoc.DOCXRSTRGOOD.NEW_OBJECT.200630B64.3.UNOFFICIAL
TwinWave.EvilDoc.DOCXRSTRGOOD.HTTP_.210304B64.8.UNOFFICIAL
MiscreantPunch.EvilMacro.PSHELLNEWOBJECTw.3.UNOFFICIAL
TwinWave.EvilDoc.DOCXRSTRGOOD.NEW-OBJECT.200322B64.3.UNOFFICIAL
TwinWave.EvilDoc.DOCXRSTRGOOD.NEW_OBJECT.200630B64.3.UNOFFICIAL
TwinWave.EvilDoc.DOCXRSTRGOOD.HTTP_.210304B64.8.UNOFFICIAL
Result
Verdict:
Malware
Maliciousness:
Behaviour
Creating a window
Creating a process with a hidden window
DNS request
Sending an HTTP GET request
Creating a file in the %temp% directory
Creating a process from a recently created file
Launching a process
Launching a process by exploiting the app vulnerability
Result
Verdict:
Malicious
File Type:
Word File with Macro
Result
Verdict:
MALICIOUS
Link:
Details
Base64 Encoded Powershell Directives
Detected one or more base64 encoded Powershell directives.
Macro with Startup Hook
Detected macro logic that will automatically execute on document open. Most malware contains some execution hook.
Macro Contains Suspicious String
Detected a macro with a suspicious string. Suspicious strings include privileged function calls, obfuscations, odd registry keys, etc...
Base64 Encoded URL
Detected an ANSI or UNICODE http:// or https:// base64 encoded URL prefix.
Result
Threat name:
AsyncRAT
Detection:
malicious
Classification:
troj.spyw.expl.evad
Score:
100 / 100
Signature
.NET source code contains potential unpacker
Document contains an embedded VBA macro which may execute processes
Document exploit detected (process start blacklist hit)
Found malware configuration
Injects a PE file into a foreign processes
Machine Learning detection for dropped file
Machine Learning detection for sample
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Powershell drops PE file
Sigma detected: Microsoft Office Product Spawning Windows Shell
Snort IDS alert for network traffic (e.g. based on Emerging Threat rules)
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Tries to harvest and steal browser information (history, passwords, etc)
Uses schtasks.exe or at.exe to add and modify task schedules
Yara detected AntiVM3
Yara detected AsyncRAT
Yara detected Costura Assembly Loader
Behaviour
Behavior Graph:
Threat name:
Script-Macro.Downloader.Heuristic
Status:
Malicious
First seen:
2021-05-25 09:17:22 UTC
AV detection:
7 of 47 (14.89%)
Threat level:
2/5
Detection(s):
Malicious file
Result
Malware family:
asyncrat
Score:
10/10
Tags:
family:asyncrat macro rat
Behaviour
Checks processor information in registry
Creates scheduled task(s)
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
Drops file in Windows directory
Suspicious use of SetThreadContext
Loads dropped DLL
Blocklisted process makes network request
Downloads MZ/PE file
Executes dropped EXE
Async RAT payload
AsyncRat
Process spawned unexpected child process
Malware Config
C2 Extraction:
198.46.177.119:6606
198.46.177.119:7707
198.46.177.119:8808
198.46.177.119:3480
198.46.177.119:7707
198.46.177.119:8808
198.46.177.119:3480
Dropper Extraction:
http://suyashhospitalraipur.com/modules/mod_banners/198/YURklmRKB31uyhW.exe
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: | Email_stealer_bin_mem |
|---|---|
| Author: | James_inthe_box |
| Description: | Email in files like avemaria |
| Rule name: | IPPort_combo_mem |
|---|---|
| Author: | James_inthe_box |
| Description: | IP and port combo |
| 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: | 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.
No further information available
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