MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 76854bcfb1fe0e8baf04c994cf4db49f5445e77201535ca49616a23c0ca69004. 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: 14


Intelligence 14 IOCs 1 YARA 11 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 76854bcfb1fe0e8baf04c994cf4db49f5445e77201535ca49616a23c0ca69004
SHA3-384 hash: 3a6bb332038087583de2f44c2f472b68928f9dfa760c3d31eb7369ae38d4c540994163c12cf4ccfdcda9dfe8e458007c
SHA1 hash: a623593851eb5f59a94e3d490db303c43c0a01e3
MD5 hash: bb4e2fc56b21fa794939e3315b0126a0
humanhash: rugby-hotel-cup-cardinal
File name:bb4e2fc56b21fa794939e3315b0126a0.exe
Download: download sample
Signature AsyncRAT
Create hunting rule
File size:46'080 bytes
First seen:2022-02-12 04:55:21 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'742 x AgentTesla, 19'607 x Formbook, 12'242 x SnakeKeylogger)
ssdeep 768:nuyRNTAoZjRWUJs9bmo2qLnw1RxY0G8PPI21jbCgX3itbHls1KnABDZKx:nuyRNTAGo2Ewol2dblXSVmKnWdKx
TLSH T105232A0037E9812BF2BE4F78ACF26145867AF2637603D54D2CC451DB5613BC69642AFE
Reporter abuse_ch
Tags:AsyncRAT exe RAT


Avatar
abuse_ch
AsyncRAT C2:
20.113.159.145:3162

Indicators Of Compromise (IOCs)

Below is a list of indicators of compromise (IOCs) associated with this malware samples.

IOCThreatFox Reference
20.113.159.145:3162 https://threatfox.abuse.ch/ioc/387209/

Intelligence

File Origin
# of uploads :
1
# of downloads :
262
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
bb4e2fc56b21fa794939e3315b0126a0.exe
Verdict:
Malicious activity
Analysis date:
2022-02-12 05:30:37 UTC
Tags:
trojan rat asyncrat
Link:
https://app.any.run/tasks/c3a1bb61-6fd4-4d17-ad06-6b75ab77e69c

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
AsyncRat
Create hunting rule
Link:
https://www.capesandbox.com/analysis/241012/
Detection(s):
Win.Packed.Samas-7998113-0
Create hunting rule

Win.Packed.Samas-8025724-0
Create hunting rule

Win.Packed.Razy-9625918-0
Create hunting rule

Win.Packed.AsyncRAT-9856570-1
Create hunting rule

Win.Packed.AsyncRAT-9861056-1
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Сreating synchronization primitives
Running batch commands
Creating a process with a hidden window
Creating a file in the %AppData% directory
Creating a file in the %temp% directory
Creating a file
Launching a process
DNS request
Creating a process from a recently created file
Sending a custom TCP request
Using the Windows Management Instrumentation requests
Unauthorized injection to a recently created process
Enabling autorun by creating a file
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
anti-vm asyncrat coinminer dcrat fareit njrat obfuscated packed rat replace.exe samas schtasks.exe
Link:
https://www.filescan.io/uploads/62073de8289e2f3e4fc78304/reports/d94a03ef-92f4-4b83-bfa7-9de7562d9f4f/overview
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.
Malware family:
AsyncRAT
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/45fa267d-2b1c-45fd-bac3-92c930afe7d0
Result
Threat name:
AsyncRAT
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/938676
Signature
.NET source code contains potential unpacker
Antivirus / Scanner detection for submitted sample
Antivirus detection for dropped file
Drops PE files with benign system names
Found malware configuration
Machine Learning detection for dropped file
Machine Learning detection for sample
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Sigma detected: Schedule system process
Sigma detected: Suspcious CLR Logs Creation
Sigma detected: System File Execution Location Anomaly
Snort IDS alert for network traffic (e.g. based on Emerging Threat rules)
System process connects to network (likely due to code injection or exploit)
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Uses schtasks.exe or at.exe to add and modify task schedules
Yara detected AsyncRAT
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 571154 Sample: FbMH9uF84E.exe Startdate: 12/02/2022 Architecture: WINDOWS Score: 100 40 Snort IDS alert for network traffic (e.g. based on Emerging Threat rules) 2->40 42 Found malware configuration 2->42 44 Malicious sample detected (through community Yara rule) 2->44 46 9 other signatures 2->46 7 FbMH9uF84E.exe 7 2->7         started        11 svchost.exe 2 2->11         started        process3 dnsIp4 30 C:\Users\user\AppData\Roaming\svchost.exe, PE32 7->30 dropped 32 C:\Users\user\AppData\...\tmpBE33.tmp.bat, DOS 7->32 dropped 34 C:\Users\user\AppData\...\FbMH9uF84E.exe.log, ASCII 7->34 dropped 48 Drops PE files with benign system names 7->48 14 cmd.exe 1 7->14         started        17 cmd.exe 1 7->17         started        38 20.113.159.145, 3162, 49744 MICROSOFT-CORP-MSN-AS-BLOCKUS United States 11->38 50 Antivirus detection for dropped file 11->50 52 System process connects to network (likely due to code injection or exploit) 11->52 54 Multi AV Scanner detection for dropped file 11->54 56 Machine Learning detection for dropped file 11->56 file5 signatures6 process7 signatures8 58 Uses schtasks.exe or at.exe to add and modify task schedules 14->58 19 conhost.exe 14->19         started        21 schtasks.exe 1 14->21         started        23 svchost.exe 3 17->23         started        26 conhost.exe 17->26         started        28 timeout.exe 1 17->28         started        process9 file10 36 C:\Users\user\AppData\...\svchost.exe.log, ASCII 23->36 dropped
Detection:
asyncrat
Create hunting rule
Link:
https://mwdb.cert.pl/sample/76854bcfb1fe0e8baf04c994cf4db49f5445e77201535ca49616a23c0ca69004/
Threat name:
ByteCode-MSIL.Backdoor.AsyncRAT
Create hunting rule
Status:
Malicious
First seen:
2022-02-09 19:21:08 UTC
File Type:
PE (.Net Exe)
Extracted files:
1
AV detection:
37 of 43 (86.05%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=o2cuxt5r7yhixlyezgkm6tnut5kelz3safjvzjewc2rdydfgsaca._file
Verdict:
malicious
Label(s):
asyncrat
Create hunting rule
Result
Malware family:
asyncrat
Create hunting rule
Score:
  10/10
Tags:
family:asyncrat botnet:default rat
Link:
https://tria.ge/reports/220212-fkqb5sgbh8/
Behaviour
Checks processor information in registry
Creates scheduled task(s)
Delays execution with timeout.exe
Modifies data under HKEY_USERS
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Drops file in Windows directory
Loads dropped DLL
Executes dropped EXE
Async RAT payload
AsyncRat
Malware Config
C2 Extraction:
20.113.159.145:3162
Unpacked files
SH256 hash:
76854bcfb1fe0e8baf04c994cf4db49f5445e77201535ca49616a23c0ca69004
MD5 hash:
bb4e2fc56b21fa794939e3315b0126a0
SHA1 hash:
a623593851eb5f59a94e3d490db303c43c0a01e3
Detections:
win_asyncrat_w0
Create hunting rule
Link:
https://www.unpac.me/results/ef5b6c3d-f9b6-4522-8fb9-429dc75c4f6a/
Please note that we are no longer able to provide a coverage score for Virus Total.

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
Create hunting rule
Author:jeFF0Falltrades
Rule name:AsyncRat
Create hunting rule
Author:kevoreilly, JPCERT/CC Incident Response Group
Description:AsyncRat Payload
Rule name:downloader_macros
Create hunting rule
Author:ddvvmmzz
Description:downloader macros
Rule name:exec_macros
Create hunting rule
Author:ddvvmmzz
Description:exec macros
Rule name:INDICATOR_SUSPICIOUS_EXE_ASEP_REG_Reverse
Create hunting rule
Author:ditekSHen
Description:Detects file containing reversed ASEP Autorun registry keys
Rule name:malware_asyncrat
Create hunting rule
Author:JPCERT/CC Incident Response Group
Description:detect AsyncRat in memory
Reference:internal research
Rule name:obfuscate_macros
Create hunting rule
Author:ddvvmmzz
Description:obfuscate macros
Rule name:pe_imphash
Create hunting rule
Rule name:Skystars_Malware_Imphash
Create hunting rule
Author:Skystars LightDefender
Description:imphash
Rule name:win_asyncrat_j1
Create hunting rule
Author:Johannes Bader @viql
Description:detects AsyncRAT
Rule name:win_asyncrat_w0
Create hunting rule
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.

Cape
Cape
https://www.capesandbox.com/analysis/241012/

Comments