MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 ec33919e56775e8501598b7d0db8c8417d06fa09d74abea625a3434446b6ecc3. 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: 10


Intelligence 10 IOCs YARA 5 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: ec33919e56775e8501598b7d0db8c8417d06fa09d74abea625a3434446b6ecc3
SHA3-384 hash: da7c51070d8842562c5cb1a0d604429851d2e6da4d6c773e85bb114a3711d6da26d168cb89d69393ea17fd542dded452
SHA1 hash: 8d9128764582c18b5f84394fca7213e31bfe9120
MD5 hash: e7ea9b3fdd1d26bc97b3565e0f49e250
humanhash: colorado-montana-august-hot
File name:20220906 - 00929320002.xls.exe
Download: download sample
Signature AsyncRAT
Create hunting rule
File size:38'912 bytes
First seen:2022-06-09 07:55:21 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 768:rVibmMrx0gbzldUv8G7iM3kzBG1neWFqfCSZUbtRUjRy:hibmMrpldUh7iM3kzBGjyvZwp
TLSH T10503B09AAF28CD75DD7D0B3014973EB04A3E7156BC125D6D8C8830521C72E92B5BBB3A
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 4b1b0766ca647939 (2 x AsyncRAT, 1 x AgentTesla, 1 x SnakeKeylogger)
Reporter GovCERT_CH
Tags:AsyncRAT exe

Intelligence

File Origin
# of uploads :
1
# of downloads :
295
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
20220906 - 00929320002.xls.exe
Verdict:
No threats detected
Analysis date:
2022-06-10 01:00:51 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/9329f745-713e-424c-94e4-3a18307ebb3f

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/278099/
Detection(s):
SecuriteInfo.com.Trojan.Downloader.10124.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Сreating synchronization primitives
Launching a process
Creating a process with a hidden window
Forced system process termination
DNS request
Sending a custom TCP request
Running batch commands
Creating a file in the %AppData% subdirectories
Creating a file
Using the Windows Management Instrumentation requests
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Unauthorized injection to a system process
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
packed strictor
Link:
https://www.filescan.io/uploads/62a1a76f5dc88d35716e4b26/reports/2105d0d0-6d5d-4e26-a617-9097150ca0e3/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/698559da-9c39-42d3-bde6-ebe440a4084b
Result
Threat name:
AsyncRAT
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1009769
Signature
.NET source code contains potential unpacker
C2 URLs / IPs found in malware configuration
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 domain / URL
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)
Uses an obfuscated file name to hide its real file extension (double extension)
Uses dynamic DNS services
Writes to foreign memory regions
Yara detected AsyncRAT
Yara detected Costura Assembly Loader
Yara detected Generic Downloader
Yara detected MSILDownloaderGeneric
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 642264 Sample: 20220906 - 00929320002.xls.exe Startdate: 09/06/2022 Architecture: WINDOWS Score: 100 72 Snort IDS alert for network traffic 2->72 74 Multi AV Scanner detection for domain / URL 2->74 76 Malicious sample detected (through community Yara rule) 2->76 78 11 other signatures 2->78 8 20220906 - 00929320002.xls.exe 16 7 2->8         started        13 Bmqnb.exe 14 4 2->13         started        15 Bmqnb.exe 2->15         started        process3 dnsIp4 66 cdn.discordapp.com 162.159.130.233, 443, 49760 CLOUDFLARENETUS United States 8->66 58 C:\Users\user\AppData\Roaming\...\Bmqnb.exe, PE32 8->58 dropped 60 C:\Users\user\...\Bmqnb.exe:Zone.Identifier, ASCII 8->60 dropped 62 C:\...\20220906 - 00929320002.xls.exe.log, ASCII 8->62 dropped 80 Writes to foreign memory regions 8->80 82 Injects a PE file into a foreign processes 8->82 17 InstallUtil.exe 1 4 8->17         started        20 cmd.exe 1 8->20         started        22 powershell.exe 15 8->22         started        68 162.159.134.233, 443, 49776 CLOUDFLARENETUS United States 13->68 84 Multi AV Scanner detection for dropped file 13->84 86 Machine Learning detection for dropped file 13->86 24 cmd.exe 13->24         started        26 powershell.exe 13->26         started        28 InstallUtil.exe 13->28         started        70 162.159.135.233, 443, 49777 CLOUDFLARENETUS United States 15->70 30 cmd.exe 15->30         started        32 powershell.exe 15->32         started        34 InstallUtil.exe 15->34         started        file5 signatures6 process7 dnsIp8 64 cigdem5.duckdns.org 45.133.1.152, 49774, 49787, 6606 DEDIPATH-LLCUS Netherlands 17->64 36 cmd.exe 17->36         started        38 conhost.exe 20->38         started        40 timeout.exe 1 20->40         started        42 conhost.exe 22->42         started        44 conhost.exe 24->44         started        46 timeout.exe 24->46         started        48 conhost.exe 26->48         started        52 2 other processes 30->52 50 conhost.exe 32->50         started        process9 process10 54 conhost.exe 36->54         started        56 timeout.exe 36->56         started       
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/ec33919e56775e8501598b7d0db8c8417d06fa09d74abea625a3434446b6ecc3/
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
Create hunting rule
Status:
Malicious
First seen:
2022-06-09 07:56:07 UTC
File Type:
PE (.Net Exe)
Extracted files:
12
AV detection:
19 of 26 (73.08%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=5qzzdhswo5pikakzrn6q3ogiif6qn6qj25fl5jrfunbuirvw5tbq._file
Verdict:
malicious
Label(s):
asyncrat
Create hunting rule
masslogger
Create hunting rule
Result
Malware family:
asyncrat
Create hunting rule
Score:
  10/10
Tags:
family:asyncrat botnet:default persistence rat suricata
Link:
https://tria.ge/reports/220609-jsn1tsbfdk/
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
Adds Run key to start application
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:
cigdem5.duckdns.org:6606
cigdem5.duckdns.org:7707
cigdem5.duckdns.org:8808
Unpacked files
SH256 hash:
ec33919e56775e8501598b7d0db8c8417d06fa09d74abea625a3434446b6ecc3
MD5 hash:
e7ea9b3fdd1d26bc97b3565e0f49e250
SHA1 hash:
8d9128764582c18b5f84394fca7213e31bfe9120
Link:
https://www.unpac.me/results/2d5beda3-1630-4224-adbc-a5fdceee1ce0/
Malware family:
AsyncRAT
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/ec33919e5677/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Suspicious File
Score:
0.38
Link:
https://yomi.yoroi.company/submissions/ec33919e56775e8501598b7d0db8c8417d06fa09d74abea625a3434446b6ecc3

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:INDICATOR_SUSPICIOUS_EXE_DiscordURL
Create hunting rule
Author:ditekSHen
Description:Detects executables Discord URL observed in first stage droppers
Rule name:pe_imphash
Create hunting rule
Rule name:Skystars_Malware_Imphash
Create hunting rule
Author:Skystars LightDefender
Description:imphash
Rule name:SUSP_Discord_Attachments_URL
Create hunting rule
Author:SECUINFRA Falcon Team
Description:Detects a PE file that contains an Discord Attachments URL. This is often used by Malware to download further payloads
Rule name:SUSP_PE_Discord_Attachment_Oct21_1
Create hunting rule
Author:Florian Roth
Description:Detects suspicious executable with reference to a Discord attachment (often used for malware hosting on a legitimate FQDN)
Reference:Internal Research

File information

The table below shows additional information about this malware sample such as delivery method and external references.

Malspam

AsyncRAT

Executable exe ec33919e56775e8501598b7d0db8c8417d06fa09d74abea625a3434446b6ecc3

(this sample)

  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/278099/

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