MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 a5992480bee1593ae9ceffd2163473b4c9e22431d0119ec3fb81435f0828e5a7. 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


Intelligence 9 IOCs 1 YARA 6 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: a5992480bee1593ae9ceffd2163473b4c9e22431d0119ec3fb81435f0828e5a7
SHA3-384 hash: 6bb5f0e400b7d2a2ca4a7add4c9eb6ff1b2c8b3df277ea127f03876ac876e7455d39d86a0e38348960a230587ba2c6a7
SHA1 hash: f525d73e09a7477bb860d24a2ae0f4a7526ef081
MD5 hash: 13edeeaeca22792a0c8f96c1cbb8fdd2
humanhash: one-violet-ohio-alpha
File name:DHLdocument11022020680908911.exe
Download: download sample
Signature AsyncRAT
Create hunting rule
File size:56'800 bytes
First seen:2021-04-08 04:50:49 UTC
Last seen:2021-04-08 05:46:34 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'666 x AgentTesla, 19'479 x Formbook, 12'209 x SnakeKeylogger)
ssdeep 768:2aj+gBVaj+gMA36hfH1cwA85zLi4JeS5MrI5yey1aexJOFQGfluGflvx/FIwJGub:2aj+SVaj+FA36hfH1csTj5byI77
Threatray 11 similar samples on MalwareBazaar
TLSH 82431DE88A7945EBE96EF974C1C3514AB9F4F83B24014E5B548B7EC3C44AB523CE016E
Reporter abuse_ch
Tags:AsyncRAT exe RAT


Avatar
abuse_ch
AsyncRAT C2:
185.191.231.252:54984

Indicators Of Compromise (IOCs)

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

IOCThreatFox Reference
185.191.231.252:54984 https://threatfox.abuse.ch/ioc/7095/

Intelligence

File Origin
# of uploads :
2
# of downloads :
135
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
DHLdocument11022020680908911.exe
Verdict:
Malicious activity
Analysis date:
2021-04-08 04:52:14 UTC
Tags:
trojan rat asyncrat
Link:
https://app.any.run/tasks/18f55b67-97b1-4807-8558-539fd7a2ea1b

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/132987/
Detection(s):
SecuriteInfo.com.Artemis13EDEEAECA22.3032.19121.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
DNS request
Sending an HTTP GET request
Sending a custom TCP request
Creating a file
Launching a process
Creating a process with a hidden window
Creating a file in the Windows subdirectories
Creating a window
Sending a UDP request
Unauthorized injection to a recently created process
Using the Windows Management Instrumentation requests
Setting a single autorun event
Adding exclusions to Windows Defender
Result
Verdict:
UNKNOWN
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/b9a369df-a059-46ec-9935-969e49260661
Result
Threat name:
AsyncRAT
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/669487
Signature
Adds a directory exclusion to Windows Defender
Changes security center settings (notifications, updates, antivirus, firewall)
Creates an autostart registry key pointing to binary in C:\Windows
Drops executables to the windows directory (C:\Windows) and starts them
Drops PE files with benign system names
Executable has a suspicious name (potential lure to open the executable)
Found malware configuration
Initial sample is a PE file and has a suspicious name
Snort IDS alert for network traffic (e.g. based on Emerging Threat rules)
Tries to delay execution (extensive OutputDebugStringW loop)
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Yara detected AsyncRAT
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 383672 Sample: DHLdocument11022020680908911.exe Startdate: 08/04/2021 Architecture: WINDOWS Score: 100 69 Snort IDS alert for network traffic (e.g. based on Emerging Threat rules) 2->69 71 Found malware configuration 2->71 73 Yara detected AsyncRAT 2->73 75 3 other signatures 2->75 7 DHLdocument11022020680908911.exe 18 8 2->7         started        12 svchost.exe 2->12         started        14 svchost.exe 2->14         started        16 10 other processes 2->16 process3 dnsIp4 63 104.21.56.119, 443, 49703 CLOUDFLARENETUS United States 7->63 65 myliverpoolnews.cf 172.67.150.212, 49702, 80 CLOUDFLARENETUS United States 7->65 55 C:\Windows\Microsoft.NET\...\svchost.exe, PE32 7->55 dropped 57 C:\Windows\...\svchost.exe:Zone.Identifier, ASCII 7->57 dropped 59 C:\...\DHLdocument11022020680908911.exe.log, ASCII 7->59 dropped 77 Creates an autostart registry key pointing to binary in C:\Windows 7->77 79 Adds a directory exclusion to Windows Defender 7->79 81 Tries to delay execution (extensive OutputDebugStringW loop) 7->81 83 Drops PE files with benign system names 7->83 18 DHLdocument11022020680908911.exe 7->18         started        21 powershell.exe 24 7->21         started        23 powershell.exe 22 7->23         started        25 powershell.exe 18 7->25         started        27 powershell.exe 12->27         started        29 powershell.exe 12->29         started        31 powershell.exe 12->31         started        33 2 other processes 12->33 85 Drops executables to the windows directory (C:\Windows) and starts them 14->85 35 4 other processes 14->35 67 127.0.0.1 unknown unknown 16->67 87 Changes security center settings (notifications, updates, antivirus, firewall) 16->87 file5 signatures6 process7 dnsIp8 61 185.191.231.252, 49724, 49739, 49742 UNREAL-SERVERSUS Netherlands 18->61 37 conhost.exe 21->37         started        39 conhost.exe 23->39         started        41 conhost.exe 25->41         started        43 conhost.exe 27->43         started        45 conhost.exe 29->45         started        47 conhost.exe 31->47         started        49 conhost.exe 35->49         started        51 conhost.exe 35->51         started        53 conhost.exe 35->53         started        process9
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/a5992480bee1593ae9ceffd2163473b4c9e22431d0119ec3fb81435f0828e5a7/
Threat name:
ByteCode-MSIL.Backdoor.Crysan
Create hunting rule
Status:
Malicious
First seen:
2021-04-08 04:51:04 UTC
AV detection:
9 of 48 (18.75%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=uwmsjaf64fmtv2oo77jbmndtwte6ejbr2aiz5q73qfbv6cbi4wtq._file
Verdict:
unknown
Similar samples:
234d9ec1757404f8fd9fbb1089b2e50c08c5119a2c0ab1311170ef1bf448a9c9
AsyncRAT
23668413a1cff07de7c539ce9dee7468ef08ca0b25454d7407112793ff9bc86f
AsyncRAT
364afe555167f1dddc5231ff116a558a65383cd947bbf67fc7fbdd85172ea871
AsyncRAT
48b52d4b7b3e9621acf8e19504a165024dbdbccf4f450dbe89c52d2a48a70f19
AsyncRAT
4d0c7314a1dae4a0bcc378f5ea1a779db24f54be030c578fb93033322f814be2
AsyncRAT
8cc2bfa5a2a451905fa3ac3e499cada8efc674eb7b8f8878458f5277970bd2e6
AsyncRAT
cb6b64368f82e2596852532158f265a5b5d889abfce8d3025f5c8177f3462e33
AsyncRAT
e3b80db58c1fa79c3780e68cf7d3ea987fb2615a68077ba3b110cfd3a7cf4de6
AsyncRAT
eb5af57f681421a21e682dd8adf47644803649b467f4f8da53f14de2182a76c7
AsyncRAT
ec2bedbc2ac399f977ac113d90d509c4023c345ce75e77184a3727150a6969e0
AsyncRAT
+ 1 additional samples on MalwareBazaar
Result
Malware family:
asyncrat
Create hunting rule
Score:
  10/10
Tags:
family:asyncrat evasion persistence rat trojan
Link:
https://tria.ge/reports/210408-9pbf17p6sa/
Behaviour
Modifies system certificate store
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Drops file in Windows directory
Suspicious use of SetThreadContext
Adds Run key to start application
Windows security modification
Async RAT payload
AsyncRat
Windows security bypass
Malware Config
C2 Extraction:
185.191.231.252:54984
Unpacked files
SH256 hash:
a5992480bee1593ae9ceffd2163473b4c9e22431d0119ec3fb81435f0828e5a7
MD5 hash:
13edeeaeca22792a0c8f96c1cbb8fdd2
SHA1 hash:
f525d73e09a7477bb860d24a2ae0f4a7526ef081
Link:
https://www.unpac.me/results/3e89cd34-1f68-4f31-9835-b34ac9344a23/
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Legit
Score:
0.00
Link:
https://yomi.yoroi.company/submissions/a5992480bee1593ae9ceffd2163473b4c9e22431d0119ec3fb81435f0828e5a7

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:JPCERT/CC Incident Response Group
Description:detect AsyncRat in memory
Reference:internal research
Rule name:INDICATOR_SUSPICIOUS_EXE_ASEP_REG_Reverse
Create hunting rule
Author:ditekSHen
Description:Detects file containing reversed ASEP Autorun registry keys
Rule name:INDICATOR_SUSPICIOUS_Stomped_PECompilation_Timestamp_InTheFu
Create hunting rule
Author:ditekSHen
Description:Detect executables with stomped PE compilation timestamp that is greater than local current time
Rule name:Reverse_text_bin_mem
Create hunting rule
Author:James_inthe_box
Description:Reverse text detected
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/132987/

Comments