MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 c2f91a91c984d5e46cbf5285781ffbe64f7e3326f88ffc9b1415bd956859c8c7. 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: 15


Intelligence 15 IOCs YARA 12 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: c2f91a91c984d5e46cbf5285781ffbe64f7e3326f88ffc9b1415bd956859c8c7
SHA3-384 hash: c949414149d881dd7b8df0a3b02f290576c59b841125eeeff90164abf62a5dac491e9b63638362c73bd7971b7c8f8a10
SHA1 hash: 4c318c166f1850878ccf8310b962a1b0e8900214
MD5 hash: 6c03174f161a7bde9817bf7622a753ce
humanhash: social-low-don-blossom
File name:Oxxgg3mhk1oC0ri.exe
Download: download sample
Signature AsyncRAT
Create hunting rule
File size:789'504 bytes
First seen:2023-01-26 12:30:43 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'666 x AgentTesla, 19'479 x Formbook, 12'209 x SnakeKeylogger)
ssdeep 12288:stG7vV5zxPCRgXGHlWMXDpFqIG26bR1M3UmQBkYlUEvG60v4nqU4/Ws:kV3GtbRmDekIrRqVWs
Threatray 9'476 similar samples on MalwareBazaar
TLSH T148F49E1023E9DF42FABD4779C2B4524093F77865A532D7895EE1A0FE1DB3B008A42B67
TrID 69.7% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
10.0% (.EXE) Win64 Executable (generic) (10523/12/4)
6.2% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
4.2% (.EXE) Win32 Executable (generic) (4505/5/1)
1.9% (.EXE) Win16/32 Executable Delphi generic (2072/23)
File icon (PE):PE icon
dhash icon 71e8e8cccce8e071 (8 x AgentTesla, 5 x SnakeKeylogger, 2 x Formbook)
Reporter abuse_ch
Tags:AsyncRAT exe RAT


Avatar
abuse_ch
AsyncRAT C2:
198.23.207.34:2023

Intelligence

File Origin
# of uploads :
1
# of downloads :
232
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
asyncrat
Create hunting rule
ID:
1
File name:
Oxxgg3mhk1oC0ri.exe
Verdict:
Malicious activity
Analysis date:
2023-01-26 12:33:49 UTC
Tags:
asyncrat
Link:
https://app.any.run/tasks/b085e322-a539-49af-a863-9bd6ec252d53

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/357087/
Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Sending a custom TCP request
Creating a file in the %AppData% directory
Enabling the 'hidden' option for recently created files
Adding an access-denied ACE
Сreating synchronization primitives
Creating a process from a recently created file
Creating a process with a hidden window
Creating a file in the %temp% directory
Launching a process
Creating a file
Using the Windows Management Instrumentation requests
Enabling autorun by creating a file
Unauthorized injection to a system process
Verdict:
No Threat
Threat level:
  2/10
Confidence:
100%
Tags:
packed
Link:
https://www.filescan.io/uploads/63d272882b351a3d0ea9109e/reports/37d658a5-1269-44d8-aca4-ad03c2e3f0b5/overview
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/3f83b856-0043-4b98-844e-84b3e47207c7
Result
Threat name:
AsyncRAT
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1159498
Signature
.NET source code contains potential unpacker
Adds a directory exclusion to Windows Defender
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Protects its processes via BreakOnTermination flag
Sigma detected: Scheduled temp file as task from temp location
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 AntiVM3
Yara detected AsyncRAT
Yara detected Generic Downloader
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 792235 Sample: Oxxgg3mhk1oC0ri.exe Startdate: 26/01/2023 Architecture: WINDOWS Score: 100 41 Malicious sample detected (through community Yara rule) 2->41 43 Sigma detected: Scheduled temp file as task from temp location 2->43 45 Multi AV Scanner detection for submitted file 2->45 47 5 other signatures 2->47 7 Oxxgg3mhk1oC0ri.exe 7 2->7         started        11 ykjOLBW.exe 5 2->11         started        process3 file4 33 C:\Users\user\AppData\Roaming\ykjOLBW.exe, PE32 7->33 dropped 35 C:\Users\user\AppData\Local\...\tmpCFA4.tmp, XML 7->35 dropped 37 C:\Users\user\...\Oxxgg3mhk1oC0ri.exe.log, ASCII 7->37 dropped 49 Uses schtasks.exe or at.exe to add and modify task schedules 7->49 51 Adds a directory exclusion to Windows Defender 7->51 13 RegSvcs.exe 2 7->13         started        17 powershell.exe 21 7->17         started        19 schtasks.exe 1 7->19         started        53 Multi AV Scanner detection for dropped file 11->53 21 schtasks.exe 1 11->21         started        23 RegSvcs.exe 3 11->23         started        25 RegSvcs.exe 11->25         started        signatures5 process6 dnsIp7 39 198.23.207.34, 2023, 49695, 49696 AS-COLOCROSSINGUS United States 13->39 55 Protects its processes via BreakOnTermination flag 13->55 27 conhost.exe 17->27         started        29 conhost.exe 19->29         started        31 conhost.exe 21->31         started        signatures8 process9
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/c2f91a91c984d5e46cbf5285781ffbe64f7e3326f88ffc9b1415bd956859c8c7/
Threat name:
Win32.Backdoor.AsyncRAT
Create hunting rule
Status:
Malicious
First seen:
2023-01-26 12:31:08 UTC
File Type:
PE (.Net Exe)
Extracted files:
17
AV detection:
19 of 26 (73.08%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=yl4rveojqtk6i3f7kkcxqh734zhx4mzg7ch7zgyucw6zk2czzddq._file
Verdict:
malicious
Label(s):
asyncrat
Create hunting rule
Similar samples:
0a05f8788ca28d5f4e2ad838a36f83107326d3021fc5bc9824fe2c47dfd07712
AsyncRAT
0c323c02db0a52d9a1764a74e3cb5a7bcc8e7b9839160179a772de3a6bc8cf26
AsyncRAT
2e75072eae7fa044b3ee05b2ba378823bbfa3091ceb5612f33b637c0d0764a21
AsyncRAT
5468fe6c4a8a65ed2e4e3c101c8fd0191b9773acc51ae61da6d446057958511b
AsyncRAT
8e3079b83ab70db97e2508e7a9a57a8a5ce124b1524c6a64867b5ff33edcbdca
AsyncRAT
959e3ca2579b6be8a11c06763c5a34ec118abc96d869e25bef06319c92da465e
AsyncRAT
f0e61a30a68cacde89ef636511dfae2b488bcbe9b47053c3afc0718d66324f70
AsyncRAT
fb5500d8ead47d2daccdc10705f398285037e115bb73380a682e8a4481715dc5
AsyncRAT
+ 9'466 additional samples on MalwareBazaar
Result
Malware family:
asyncrat
Create hunting rule
Score:
  10/10
Tags:
family:asyncrat botnet:default rat
Link:
https://tria.ge/reports/230126-pp2qeade79/
Behaviour
Creates scheduled task(s)
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
Malware Config
C2 Extraction:
198.23.207.34:2023
Unpacked files
SH256 hash:
3fdc924a0d8f9208ddd4a5f0dfedcc97865877f2c83f6522292fb129c18b1bc7
MD5 hash:
1eaada688322b09b81871faa0eb12f24
SHA1 hash:
c9d67515e6bdf2c6657eae33fefe61d5435fbf5a
Detections:
AsyncRAT
Create hunting rule
win_asyncrat_w0
Create hunting rule
Link:
https://www.unpac.me/results/48e051f5-3c45-4992-9a95-06b4e22771c4/
SH256 hash:
411569f9f0b865c651adc1234d23f86cd98fe5cd641704702276e9882be113b6
MD5 hash:
7648892096f37af50468509c5b051180
SHA1 hash:
a56a074c2770152761f6c4975db0e9f7d57f8cda
Link:
https://www.unpac.me/results/48e051f5-3c45-4992-9a95-06b4e22771c4/
SH256 hash:
a54916683d2efb6e301e9f38075e9abb3cd03e103edc6ef56c9532f9c4fbb8bb
MD5 hash:
30b70a6f973cdfe060ab666553a61676
SHA1 hash:
6e9509e8540a9f18b3b9d772dfae92774526d9b1
Link:
https://www.unpac.me/results/48e051f5-3c45-4992-9a95-06b4e22771c4/
SH256 hash:
ab2f8dbc2b147528cecac6ea1a8886951c424be0b2026743b39d97f0cbabb04c
MD5 hash:
77ab42f4bbbf4565846eb8953192d71f
SHA1 hash:
3c662c756cc31867c0473716a74e777a65ced550
Link:
https://www.unpac.me/results/48e051f5-3c45-4992-9a95-06b4e22771c4/
SH256 hash:
cbfc55879c96d0874350a10ad8562b9f1250540bbe62cb7ad160986bc02add80
MD5 hash:
30c9987b754f65f0c09ccd589ffa8652
SHA1 hash:
1519a3ab54a214c6102791d88cdb83e906da5c91
Link:
https://www.unpac.me/results/48e051f5-3c45-4992-9a95-06b4e22771c4/
SH256 hash:
c2f91a91c984d5e46cbf5285781ffbe64f7e3326f88ffc9b1415bd956859c8c7
MD5 hash:
6c03174f161a7bde9817bf7622a753ce
SHA1 hash:
4c318c166f1850878ccf8310b962a1b0e8900214
Link:
https://www.unpac.me/results/48e051f5-3c45-4992-9a95-06b4e22771c4/
Malware family:
AsyncRAT
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/c2f91a91c984/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Malicious File
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/c2f91a91c984d5e46cbf5285781ffbe64f7e3326f88ffc9b1415bd956859c8c7

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/357087/

Comments