MalwareBazaar Database
You are currently viewing the MalwareBazaar entry for SHA256 b899fc7141b866552940b6ee0f8ab0d214a05c8338906fd85fae67c507d652bb. 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: 13
| SHA256 hash: | b899fc7141b866552940b6ee0f8ab0d214a05c8338906fd85fae67c507d652bb |
|---|---|
| SHA3-384 hash: | e3663717751cd7ad01e8849c669b8cd152f3bc07b9d73fa23594bf652b55cc3829b17a3b1671d25055b1a6245af8a045 |
| SHA1 hash: | 5a500389d073311b3decc47819c19dd7faf56abb |
| MD5 hash: | 3bcf40a5ad0db3f29f3c6243a923e277 |
| humanhash: | iowa-summer-lactose-johnny |
| File name: | 3bcf40a5ad0db3f29f3c6243a923e277.exe |
| Download: | download sample |
| Signature | AsyncRAT |
| File size: | 492'544 bytes |
| First seen: | 2022-05-01 16:20:37 UTC |
| Last seen: | Never |
| File type: |  exe |
| MIME type: | application/x-dosexec |
| imphash | f34d5f2d4577ed6d9ceec516c1f5a744 (48'655 x AgentTesla, 19'464 x Formbook, 12'205 x SnakeKeylogger) |
| ssdeep | 6144:csFDZUi1H8vzgMU+duPOyxzWtrboPZXBR+IhQaTb5Jz/:nlH8vzgL8QJxzWqRXBR |
| Threatray | 2'504 similar samples on MalwareBazaar |
| TLSH | T199A4E95C3B420AB2EC1D81318A598906BB220ED76398F8A5579BF3C7877B063DD45EF4 |
| TrID | 69.1% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13) 9.9% (.EXE) Win64 Executable (generic) (10523/12/4) 6.2% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2) 4.7% (.EXE) Win16 NE executable (generic) (5038/12/1) 4.2% (.EXE) Win32 Executable (generic) (4505/5/1) |
| File icon (PE): |  |
| dhash icon | 1a333b331b1b3343 (3 x AsyncRAT) |
| Reporter |  abuse_ch |
| Tags: | AsyncRAT exe RAT |
Indicators Of Compromise (IOCs)
Below is a list of indicators of compromise (IOCs) associated with this malware samples.
| IOC | ThreatFox Reference |
|---|---|
| 141.101.173.39:2000 | https://threatfox.abuse.ch/ioc/547297/ |
Intelligence
File Origin
# of uploads :
1
# of downloads :
342
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
asyncrat
ID:
1
File name:
3bcf40a5ad0db3f29f3c6243a923e277.exe
Verdict:
Malicious activity
Analysis date:
2022-05-01 16:22:29 UTC
Tags:
asyncrat
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
Сreating synchronization primitives
Creating a window
Launching a process
Using the Windows Management Instrumentation requests
Query of malicious DNS domain
Sending a TCP request to an infection source
Unauthorized injection to a system process
Verdict:
Malicious
Threat level:
10/10
Confidence:
100%
Tags:
obfuscated packed
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.
Verdict:
Malicious
Result
Threat name:
AsyncRAT
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Signature
.NET source code contains potential unpacker
Antivirus / Scanner detection for submitted sample
Binary or sample is protected by dotNetProtector
C2 URLs / IPs found in malware configuration
Found malware configuration
Injects a PE file into a foreign processes
Machine Learning detection for sample
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for domain / URL
Multi AV Scanner detection for submitted file
Snort IDS alert for network traffic
Tries to delay execution (extensive OutputDebugStringW loop)
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Uses dynamic DNS services
Writes to foreign memory regions
Yara detected AsyncRAT
Behaviour
Behavior Graph:
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
Status:
Malicious
First seen:
2022-04-28 20:39:51 UTC
File Type:
PE (.Net Exe)
Extracted files:
4
AV detection:
27 of 42 (64.29%)
Threat level:
5/5
Detection(s):
Malicious file
Verdict:
malicious
Label(s):
asyncrat
Similar samples:
+ 2'494 additional samples on MalwareBazaar
Result
Malware family:
asyncrat
Score:
10/10
Tags:
family:asyncrat botnet:26/4/22 rat suricata
Behaviour
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Suspicious use of SetThreadContext
Uses the VBS compiler for execution
Async RAT payload
AsyncRat
suricata: ET MALWARE Generic AsyncRAT Style SSL Cert
suricata: ET MALWARE Observed Malicious SSL Cert (AsyncRAT Server)
Malware Config
C2 Extraction:
znets.ddns.net:2000
dnets.ddns.net:2000
dnets.ddns.net:2000
Unpacked files
SH256 hash:
ba100af04ed1f5f84b38155d69d1cd28101690a925d2ecd09df73997da22ad72
MD5 hash:
0ea3e77a54d58df4d81aa15442753bbe
SHA1 hash:
1c0e472cc621b5b32d778daf5fba582c32536307
Detections:
win_asyncrat_w0
SH256 hash:
b899fc7141b866552940b6ee0f8ab0d214a05c8338906fd85fae67c507d652bb
MD5 hash:
3bcf40a5ad0db3f29f3c6243a923e277
SHA1 hash:
5a500389d073311b3decc47819c19dd7faf56abb
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: | AsyncRat |
|---|---|
| Author: | kevoreilly, JPCERT/CC Incident Response Group |
| Description: | AsyncRat Payload |
| Rule name: | INDICATOR_EXE_Packed_Babel |
|---|---|
| Author: | ditekSHen |
| Description: | Detects executables packed with Babel |
| Rule name: | INDICATOR_EXE_Packed_Dotfuscator |
|---|---|
| Author: | ditekSHen |
| Description: | Detects executables packed with Dotfuscator |
| Rule name: | INDICATOR_EXE_Packed_dotNetProtector |
|---|---|
| Author: | ditekSHen |
| Description: | Detects executables packed with dotNetProtector |
| Rule name: | INDICATOR_EXE_Packed_Goliath |
|---|---|
| Author: | ditekSHen |
| Description: | Detects executables packed with Goliath |
| Rule name: | INDICATOR_EXE_Packed_SmartAssembly |
|---|---|
| Author: | ditekSHen |
| Description: | Detects executables packed with SmartAssembly |
| Rule name: | INDICATOR_SUSPICIOUS_EXE_ASEP_REG_Reverse |
|---|---|
| Author: | ditekSHen |
| Description: | Detects file containing reversed ASEP Autorun registry keys |
| Rule name: | malware_asyncrat |
|---|---|
| Author: | JPCERT/CC Incident Response Group |
| Description: | detect AsyncRat in memory |
| Reference: | internal research |
| Rule name: | MAL_AsnycRAT |
|---|---|
| Author: | SECUINFRA Falcon Team |
| Description: | Detects AsnycRAT based on it's config decryption routine |
| Rule name: | MAL_AsyncRAT_Config_Decryption |
|---|---|
| Author: | SECUINFRA Falcon Team |
| Description: | Detects AsnycRAT based on it's config decryption routine |
| Rule name: | pe_imphash |
|---|
| Rule name: | Skystars_Malware_Imphash |
|---|---|
| Author: | Skystars LightDefender |
| Description: | imphash |
| Rule name: | SUSP_DOTNET_PE_List_AV |
|---|---|
| Author: | SECUINFRA Falcon Team |
| Description: | Detecs .NET Binary that lists installed AVs |
| Rule name: | SUSP_Reverse_Run_Key |
|---|---|
| Author: | SECUINFRA Falcon Team |
| Description: | Detects a Reversed Run Key |
| 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.
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