MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 879855eb9b481225aea2cd966c4b9781a517d664c06ea32debb1bdd067a45faa. 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: 12


Intelligence 12 IOCs YARA 11 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 879855eb9b481225aea2cd966c4b9781a517d664c06ea32debb1bdd067a45faa
SHA3-384 hash: 0c742898e1ae8aacba2c969e6a2efe7b3352fc97eee1d02bd806f130e5c1df08b8efd095dab96100b538ccb771dfba11
SHA1 hash: 21f7025fe205728300279a5404383aa3511a2b0f
MD5 hash: 6caebb4fa5fac37e4a05cceb693e335f
humanhash: finch-iowa-cardinal-alabama
File name:triage_dropped_file
Download: download sample
Signature AsyncRAT
Create hunting rule
File size:845'824 bytes
First seen:2022-06-23 10:55:18 UTC
Last seen:2022-06-23 12:17:06 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'652 x AgentTesla, 19'463 x Formbook, 12'204 x SnakeKeylogger)
ssdeep 12288:T/aEf9cQ1XYnGttnuo5W1ZMjJZnKR8bcFSxf3ZmBYDKbqS5PBlNBWpeXaAcfIFlO:mENyGttnuAW49ZKR8bTwmD8j5p3wC8b
Threatray 3'970 similar samples on MalwareBazaar
TLSH T1140501012A9AB5D2FA372F725DA7217A1C03572E13AE8BC72E9B13C8566D3DC11B7341
TrID 72.5% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
10.4% (.EXE) Win64 Executable (generic) (10523/12/4)
6.5% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
4.4% (.EXE) Win32 Executable (generic) (4505/5/1)
2.0% (.EXE) OS/2 Executable (generic) (2029/13)
File icon (PE):PE icon
dhash icon 8898a2ac1c9486be (8 x AsyncRAT, 2 x SnakeKeylogger)
Reporter malwarelabnet
Tags:AsyncRAT exe

Intelligence

File Origin
# of uploads :
2
# of downloads :
249
Origin country :
n/a
Vendor Threat Intelligence
Detection:
AsyncRat
Create hunting rule
Link:
https://www.capesandbox.com/analysis/282608/
Result
Verdict:
Suspicious
Maliciousness:

Behaviour
Searching for the window
Creating a window
Sending a custom TCP request
DNS request
Сreating synchronization primitives
Running batch commands
Creating a process with a hidden window
Launching a process
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
packed remcos
Link:
https://www.filescan.io/uploads/62b446a51fcdba4e1a4d56ed/reports/f8a1c7cb-fac0-4611-a23d-605f6e8dd70a/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.
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/4e258ae6-b6e5-42f1-8223-5e23fce501a3
Result
Threat name:
AsyncRAT
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1018572
Signature
.NET source code contains potential unpacker
Antivirus / Scanner detection for submitted sample
Antivirus detection for dropped file
Creates an undocumented autostart registry key
Injects a PE file into a foreign processes
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
Snort IDS alert for network traffic
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Yara detected AsyncRAT
Yara detected Costura Assembly Loader
Yara detected Generic Downloader
Behaviour
Behavior Graph:
Download SVG
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/879855eb9b481225aea2cd966c4b9781a517d664c06ea32debb1bdd067a45faa/
Threat name:
ByteCode-MSIL.Trojan.Remcos
Create hunting rule
Status:
Malicious
First seen:
2022-06-23 10:56:09 UTC
File Type:
PE (.Net Exe)
Extracted files:
5
AV detection:
17 of 26 (65.38%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=q6mfl243jajcllvczwlgys4xqgsrpvteybxkglplwg65az5el6va._file
Verdict:
malicious
Label(s):
asyncrat
Create hunting rule
Similar samples:
0b8a5cbe236a7057a2904f18480b85ce9b59b891c0a1a041516248d35760744d
AsyncRAT
1299373ec40fc1f3f16957338574a9ad51a94e62220cc8c08f1ad81dee443544
AsyncRAT
16fc0cec13d88da3d0a36e4c42e733db8f1e21cafc18fd813a25cd0bc835f35a
AsyncRAT
1a9e9deb92ea9d2cd35f94b5b0cfaecfd353fe71d886aa0ee4da2d7b454427aa
AsyncRAT
213528a5164fcb5253010129aac3855b4b905c9c5a9514a2a2b9db7e2b592a73
AsyncRAT
2799478f81991ca4ba86ccf7a234f95199cf3743f6a1112f20666b6ce104e557
AsyncRAT
438e8f8d626ca18bb5fbd3499cad058033b199c865badba6415e362d5b8dcd49
AsyncRAT
bcf7571a4d9b25fabdc2d6120b1b2d7bd8446ea2bc3a5da1d4127954920067de
AsyncRAT
ceddcfa72226e91f7435facafe6631d1385ca4d246d242d5136ac4e9462b8611
AsyncRAT
ecb8839117d73d33390c84f7f6e02f4970156ccb2da7b48083922f60625fa8be
AsyncRAT
+ 3'960 additional samples on MalwareBazaar
Result
Malware family:
asyncrat
Create hunting rule
Score:
  10/10
Tags:
family:asyncrat botnet:default rat suricata
Link:
https://tria.ge/reports/220623-m1nxksfdh6/
Behaviour
Delays execution with timeout.exe
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Suspicious use of SetThreadContext
Checks computer location settings
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:
91.193.75.135:3030
Unpacked files
SH256 hash:
b69654739a0b9e1c168b86841193bf109f1d0610c07c959597a207c7101a76d1
MD5 hash:
054515728c7725f00c981ba476e07bba
SHA1 hash:
f018824501927da1e3f50e8d50ac52935f02b2a4
Detections:
win_asyncrat_w0
Create hunting rule
Link:
https://www.unpac.me/results/da4ddc38-3492-4ed2-994f-416859d42803/
Parent samples :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 hash:
df92f9d8caa2f708106bb72cce1bf9662c73dd5a59c3dafafaba42ae1e95e133
MD5 hash:
8631935747ec17f021b3616ac5d9eff1
SHA1 hash:
d22815aaf30d820b2165fd22efb5263bb4571d06
Link:
https://www.unpac.me/results/da4ddc38-3492-4ed2-994f-416859d42803/
SH256 hash:
139dff0fc08091d6f45477e9024ccdebf4bdb5a17b17e807f2bbef7e57399039
MD5 hash:
f5b485c122cf8888c24cb301210d3834
SHA1 hash:
5b0fc7e0f2a50562b74211e1de470d260e41760b
Link:
https://www.unpac.me/results/da4ddc38-3492-4ed2-994f-416859d42803/
SH256 hash:
879855eb9b481225aea2cd966c4b9781a517d664c06ea32debb1bdd067a45faa
MD5 hash:
6caebb4fa5fac37e4a05cceb693e335f
SHA1 hash:
21f7025fe205728300279a5404383aa3511a2b0f
Link:
https://www.unpac.me/results/da4ddc38-3492-4ed2-994f-416859d42803/
Malware family:
AsyncRAT
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/879855eb9b48/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Suspicious File
Score:
0.45
Link:
https://yomi.yoroi.company/submissions/879855eb9b481225aea2cd966c4b9781a517d664c06ea32debb1bdd067a45faa

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:kevoreilly, JPCERT/CC Incident Response Group
Description:AsyncRat Payload
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:MAL_AsnycRAT
Create hunting rule
Author:SECUINFRA Falcon Team
Description:Detects AsnycRAT based on it's config decryption routine
Rule name:MAL_AsyncRAT_Config_Decryption
Create hunting rule
Author:SECUINFRA Falcon Team
Description:Detects AsnycRAT based on it's config decryption routine
Rule name:pe_imphash
Create hunting rule
Rule name:Skystars_Malware_Imphash
Create hunting rule
Author:Skystars LightDefender
Description:imphash
Rule name:SUSP_DOTNET_PE_List_AV
Create hunting rule
Author:SECUINFRA Falcon Team
Description:Detecs .NET Binary that lists installed AVs
Rule name:SUSP_Reverse_Run_Key
Create hunting rule
Author:SECUINFRA Falcon Team
Description:Detects a Reversed Run Key
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/282608/

Comments