MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 41b5691a9272ab9dcb87a5f3f106da073fc3d2c4aea1abd78ac7b3af4cbbffdd. 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


Intelligence 13 IOCs YARA 5 File information Comments
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SHA256 hash: 41b5691a9272ab9dcb87a5f3f106da073fc3d2c4aea1abd78ac7b3af4cbbffdd
SHA3-384 hash: d87cb63c626c46a7f9096b790a3c96f3a8365e33ba6041569a06e941b36796cc853fb1c6ae78e28018b99b6a2c3cb766
SHA1 hash: 62613a91b25ba4f6a0160b82bc9da0177085fe60
MD5 hash: 0c9d4bd0d22065563920ced480065b24
humanhash: fruit-december-network-mars
File name:41b5691a9272ab9dcb87a5f3f106da073fc3d2c4aea1abd78ac7b3af4cbbffdd
Download: download sample
Signature AsyncRAT
Create hunting rule
File size:818'688 bytes
First seen:2021-08-31 06:48:17 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash 332f7ce65ead0adfb3d35147033aabe9 (81 x XRed, 18 x SnakeKeylogger, 7 x DarkComet)
ssdeep 12288:NMSApJVYG5lDLyjsb0eOzkv4R7QnvUUilQ35+6G75V99aP5ZXHz:NnsJ39LyjbJkQFMhmC+6GD9iBT
Threatray 24 similar samples on MalwareBazaar
TLSH T108057E22F2D18437D1721A789C6BA3A5583ABF512E34694E3BF42E4C8F3D6827C152D7
dhash icon 0e0765595965170e (1 x AsyncRAT)
Reporter JAMESWT_WT
Tags:AsyncRAT exe

Intelligence

File Origin
# of uploads :
1
# of downloads :
94
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
Spammer.rar
Verdict:
Malicious activity
Analysis date:
2021-08-28 13:34:33 UTC
Tags:
trojan rat asyncrat
Link:
https://app.any.run/tasks/d3171abf-dfb0-4c94-8cf4-ce61fd72f8a4

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/184025/
Detection(s):
PUA.Win.Packer.D1s1g-5
Create hunting rule

PUA.Win.Packer.D1s1g-1
Create hunting rule

PUA.Win.Packer.D1s1g-2
Create hunting rule

Win.Malware.Delf-6899401-0
Create hunting rule

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

Win.Trojan.Emotet-9850453-0
Create hunting rule

PUA.Win.Adware.Slugin-6840354-0
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Creating a file in the Windows subdirectories
Enabling the 'hidden' option for recently created files
Sending a custom TCP request
Sending a UDP request
Creating a process from a recently created file
Creating a file
Moving a recently created file
Searching for the window
Creating a file in the %temp% directory
Moving a file to the %temp% directory
Modifying an executable file
Deleting a recently created file
DNS request
Connection attempt
Sending an HTTP GET request
Running batch commands
Creating a process with a hidden window
Creating a file in the %AppData% directory
Launching a process
Using the Windows Management Instrumentation requests
Unauthorized injection to a recently created process
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Query of malicious DNS domain
Infecting executable files
Enabling autorun by creating a file
Malware family:
AsyncRAT
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/ebcea5f9-2e82-4051-8b7c-2922714117f2
Result
Threat name:
AsyncRAT
Create hunting rule
Detection:
malicious
Classification:
troj.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/842366
Signature
.NET source code contains potential unpacker
Antivirus / Scanner detection for submitted sample
Antivirus detection for dropped file
C2 URLs / IPs found in malware configuration
Contains functionality to detect sleep reduction / modifications
Document contains an embedded VBA macro with suspicious strings
Document contains an embedded VBA with functions possibly related to ADO stream file operations
Document contains an embedded VBA with functions possibly related to HTTP operations
Document contains an embedded VBA with functions possibly related to WSH operations (process, registry, environment, or keystrokes)
Drops PE files to the document folder of the user
Found malware configuration
Machine Learning detection for dropped file
Machine Learning detection for sample
Multi AV Scanner detection for domain / URL
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Sigma detected: Executable Used by PlugX in Uncommon Location
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Uses dynamic DNS services
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: 474798 Sample: TESvICaibd.exe Startdate: 31/08/2021 Architecture: WINDOWS Score: 100 71 Multi AV Scanner detection for domain / URL 2->71 73 Found malware configuration 2->73 75 Antivirus detection for dropped file 2->75 77 15 other signatures 2->77 8 TESvICaibd.exe 1 6 2->8         started        11 MsMpEng.exe 15 2 2->11         started        15 EXCEL.EXE 23 15 2->15         started        17 Synaptics.exe 2->17         started        process3 dnsIp4 53 C:\Users\user\...\._cache_TESvICaibd.exe, PE32 8->53 dropped 55 C:\ProgramData\Synaptics\Synaptics.exe, PE32 8->55 dropped 57 C:\ProgramData\Synaptics\RCX1707.tmp, PE32 8->57 dropped 59 C:\...\Synaptics.exe:Zone.Identifier, ASCII 8->59 dropped 19 ._cache_TESvICaibd.exe 7 8->19         started        23 Synaptics.exe 62 8->23         started        67 aa.larinax999.repl.co 35.186.245.55, 443, 49719 GOOGLEUS United States 11->67 69 103.91.207.190, 49720, 8943 CSNE-NETPLAY-ASCSNECoLtdTH Thailand 11->69 91 Antivirus detection for dropped file 11->91 93 Multi AV Scanner detection for dropped file 11->93 95 Machine Learning detection for dropped file 11->95 file5 signatures6 process7 dnsIp8 45 C:\Users\user\AppData\Roaming\MsMpEng.exe, PE32 19->45 dropped 47 C:\Users\user\AppData\...\tmp5393.tmp.bat, DOS 19->47 dropped 49 C:\Users\user\...\._cache_TESvICaibd.exe.log, ASCII 19->49 dropped 79 Antivirus detection for dropped file 19->79 81 Multi AV Scanner detection for dropped file 19->81 83 Machine Learning detection for dropped file 19->83 26 cmd.exe 1 19->26         started        29 cmd.exe 1 19->29         started        61 docs.google.com 172.217.16.142, 443, 49705, 49706 GOOGLEUS United States 23->61 63 freedns.afraid.org 69.42.215.252, 49708, 80 AWKNET-LLCUS United States 23->63 65 2 other IPs or domains 23->65 51 C:\Users\user\Documents\~$cache1, PE32 23->51 dropped 85 Drops PE files to the document folder of the user 23->85 87 Contains functionality to detect sleep reduction / modifications 23->87 31 WerFault.exe 23->31         started        33 WerFault.exe 23->33         started        file9 signatures10 process11 signatures12 89 Uses schtasks.exe or at.exe to add and modify task schedules 26->89 35 conhost.exe 26->35         started        37 schtasks.exe 1 26->37         started        39 conhost.exe 29->39         started        41 timeout.exe 1 29->41         started        43 MsMpEng.exe 29->43         started        process13
Detection:
asyncrat
Create hunting rule
Link:
https://mwdb.cert.pl/sample/41b5691a9272ab9dcb87a5f3f106da073fc3d2c4aea1abd78ac7b3af4cbbffdd/
Threat name:
Win32.Backdoor.DarkComet
Create hunting rule
Status:
Malicious
First seen:
2021-08-20 20:22:45 UTC
File Type:
PE (Exe)
Extracted files:
67
AV detection:
42 of 46 (91.30%)
Threat level:
  5/5
Verdict:
malicious
Label(s):
asyncrat
Create hunting rule
Similar samples:
0fbdb66d81f97c74640af563b58b4d93872ed48a0397754b5c51a5c76d32900c
AsyncRAT
26274dd1baa5be91bd6bdb0db48895d89da2a78e6fac273257557de473adc841
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4e5add107e83a073bd97b795409f41a1e0d1b26b8ebecae38f2e1f805a8cdde6
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56f435a5987f429df40365c3fc9e17443e7a79a003d57d29b4b8f4396bf8c22b
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5fa54622d0d5f5abbeec7e634d6c2d868984e8cfb20b8502757c2df8fe94f7c7
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8c857d02af8759783d34e85f94b4f3a61a8ec6bf687b5d80668814025107466f
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9a9f7ea8a021b5c4e7984076bfe6f0ab42bddb7b50fa18ef0da17c12e8ef95e1
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b484b76186c0e9c0d4f8719978a2235d0f580088562df853c837e296b1d837ed
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ff97bd0b382bcd07b0e71fd6249426a1d1246c52b07edd238eaa64136db737df
AsyncRAT
+ 14 additional samples on MalwareBazaar
Result
Malware family:
asyncrat
Create hunting rule
Score:
  10/10
Tags:
family:asyncrat macro persistence rat
Link:
https://tria.ge/reports/210831-4c3gef4was/
Behaviour
Checks processor information in registry
Creates scheduled task(s)
Delays execution with timeout.exe
Enumerates system info in registry
Modifies Internet Explorer settings
Modifies registry class
Modifies system certificate store
Suspicious behavior: AddClipboardFormatListener
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Adds Run key to start application
Checks computer location settings
Loads dropped DLL
Executes dropped EXE
Suspicious Office macro
Async RAT payload
AsyncRat
Malware Config
C2 Extraction:
null:null
Unpacked files
SH256 hash:
41b5691a9272ab9dcb87a5f3f106da073fc3d2c4aea1abd78ac7b3af4cbbffdd
MD5 hash:
0c9d4bd0d22065563920ced480065b24
SHA1 hash:
62613a91b25ba4f6a0160b82bc9da0177085fe60
Detections:
win_asyncrat_w0
Create hunting rule
Link:
https://www.unpac.me/results/9830d061-b695-4092-994e-b871bbefc5c3/
Malware family:
AsyncRAT
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/41b5691a9272/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
iSpy Keylogger
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/41b5691a9272ab9dcb87a5f3f106da073fc3d2c4aea1abd78ac7b3af4cbbffdd

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: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: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/184025/

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