MalwareBazaar Database
You are currently viewing the MalwareBazaar entry for SHA256 37b842cb5ad7a0ce19bd735e14bfd35f2d0708d396dbdf56b32c79448bbbef3a. 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: 9
| SHA256 hash: | 37b842cb5ad7a0ce19bd735e14bfd35f2d0708d396dbdf56b32c79448bbbef3a |
|---|---|
| SHA3-384 hash: | 09c513b81d3eede4ae602e2561df82901fd485626069728ed9e3895c967e9f837ce330a4f3cb22169b49db82ae9daf57 |
| SHA1 hash: | 2fef7b5739f09f659aa0fc89a6486edb4f2a3152 |
| MD5 hash: | 3562dc2fdb8acb24c13969c7e0877dbb |
| humanhash: | uncle-pennsylvania-double-five |
| File name: | SecuriteInfo.com.Mal.Generic-S.26042.7459 |
| Download: | download sample |
| Signature | AsyncRAT |
| File size: | 431'592 bytes |
| First seen: | 2020-11-27 05:48:10 UTC |
| Last seen: | Never |
| File type: |  exe |
| MIME type: | application/x-dosexec |
| imphash | f34d5f2d4577ed6d9ceec516c1f5a744 (48'747 x AgentTesla, 19'638 x Formbook, 12'244 x SnakeKeylogger) |
| ssdeep | 3072:jXrYyv6YwITHBnXvWA6pwbOeer52kDeCe4rCBWQz5ueCciwtC:jXrYy1HHBnXvX6pfBw6 |
| Threatray | 483 similar samples on MalwareBazaar |
| TLSH | 1694826C3A8F5F11AF7035F926960A404DFDBF8BE051F2DB0CCA91EAB0922422757D59 |
| Reporter |  SecuriteInfoCom |
| Tags: | AsyncRAT |
Intelligence
File Origin
# of uploads :
1
# of downloads :
161
Origin country :
n/a
Vendor Threat Intelligence
Detection:
n/a
Result
Verdict:
Malware
Maliciousness:
Behaviour
Sending a UDP request
Launching a process
Creating a process with a hidden window
DNS request
Using the Windows Management Instrumentation requests
Creating a window
Sending a TCP request to an infection source
Result
Verdict:
MALICIOUS
Details
Windows PE Executable
Found a Windows Portable Executable (PE) binary. Depending on context, the presence of a binary is suspicious or malicious.
Result
Threat name:
AsyncRAT
Detection:
malicious
Classification:
troj.adwa.evad
Score:
100 / 100
Signature
.NET source code contains very large strings
Adds a directory exclusion to Windows Defender
Antivirus / Scanner detection for submitted sample
Antivirus detection for dropped file
Binary contains a suspicious time stamp
Connects to a pastebin service (likely for C&C)
Creates an undocumented autostart registry key
Creates autostart registry keys with suspicious names
Creates multiple autostart registry keys
Drops PE files to the startup folder
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Queries sensitive video device information (via WMI, Win32_VideoController, often done to detect virtual machines)
Yara detected AsyncRAT
Behaviour
Behavior Graph:
Threat name:
ByteCode-MSIL.Trojan.Perseus
Status:
Malicious
First seen:
2020-11-26 20:25:18 UTC
AV detection:
21 of 28 (75.00%)
Threat level:
5/5
Detection(s):
Malicious file
Verdict:
malicious
Label(s):
asyncrat
Similar samples:
+ 473 additional samples on MalwareBazaar
Result
Malware family:
asyncrat
Score:
10/10
Tags:
family:asyncrat evasion persistence rat trojan
Behaviour
Delays execution with timeout.exe
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Suspicious use of SetThreadContext
Adds Run key to start application
Legitimate hosting services abused for malware hosting/C2
Maps connected drives based on registry
Checks BIOS information in registry
Drops startup file
Windows security modification
Looks for VMWare Tools registry key
Async RAT payload
Looks for VirtualBox Guest Additions in registry
AsyncRat
Modifies WinLogon for persistence
Modifies Windows Defender Real-time Protection settings
Windows security bypass
Turns off Windows Defender SpyNet reporting
Malware Config
C2 Extraction:
null:null
Unpacked files
SH256 hash:
37b842cb5ad7a0ce19bd735e14bfd35f2d0708d396dbdf56b32c79448bbbef3a
MD5 hash:
3562dc2fdb8acb24c13969c7e0877dbb
SHA1 hash:
2fef7b5739f09f659aa0fc89a6486edb4f2a3152
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Kryptik
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: | asyncrat |
|---|---|
| Author: | JPCERT/CC Incident Response Group |
| Description: | detect AsyncRat in memory |
| Reference: | internal research |
| Rule name: | Ping_Del_method_bin_mem |
|---|---|
| Author: | James_inthe_box |
| Description: | cmd ping IP nul del |
| Rule name: | Reverse_text_bin_mem |
|---|---|
| Author: | James_inthe_box |
| Description: | Reverse text detected |
| Rule name: | win_asyncrat_j1 |
|---|---|
| Author: | Johannes Bader @viql |
| Description: | detects AsyncRAT |
| Rule name: | win_asyncrat_w0 |
|---|---|
| Author: | JPCERT/CC Incident Response Group |
| Description: | detect AsyncRat in memory |
| Reference: | internal research |
File information
The table below shows additional information about this malware sample such as delivery method and external references.
Web download
Delivery method
Distributed via web download
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