MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 383536471e06eef80e55ff074d896710948eb79d3f90b734b4d32e0876faa79c. 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: 11


Intelligence 11 IOCs YARA 4 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 383536471e06eef80e55ff074d896710948eb79d3f90b734b4d32e0876faa79c
SHA3-384 hash: 5fc53527864970ba6870a7d626f7b9c5060cb4ca0dbe265af24f2e6072f9af9a84da42d395f19539b644edc2a4a464d2
SHA1 hash: f58566c500070cd8878c45885bbb0ca5e36e79f1
MD5 hash: 14592d68532406530e07a1027e89b14f
humanhash: king-bacon-burger-winner
File name:SKM_C258201001130020005057.exe
Download: download sample
Signature AsyncRAT
Create hunting rule
File size:775'336 bytes
First seen:2020-12-22 10:32:35 UTC
Last seen:2020-12-22 13:12:06 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'747 x AgentTesla, 19'638 x Formbook, 12'244 x SnakeKeylogger)
ssdeep 12288:+gPWblf4xByKIw94m1SJlCrLZOr1Xr8ttLbzrI/YcpZJV4IEizZgldIcuLPuO5bM:+gPHz
Threatray 525 similar samples on MalwareBazaar
TLSH D8F41902498268CBD6B2D494A3CE82D6B387958CE7A97FD4FE10E21531DC467EFB9D40
Reporter abuse_ch
Tags:AsyncRAT DHL exe RAT


Avatar
abuse_ch
Malspam distributing AsyncRAT:

HELO: s1008.xrea.com
Sending IP: 150.95.9.228
From: DHL Customer Service <no-reply@dhl.com>
Subject: Delayed Parcel Delivery
Attachment: SKM_C258201001130020005057.7z (contains "SKM_C258201001130020005057.exe")

AsyncRAT C2:
severdops.ddns.net:6204 (103.99.1.128)

Intelligence

File Origin
# of uploads :
2
# of downloads :
239
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
SKM_C258201001130020005057.exe
Verdict:
Malicious activity
Analysis date:
2020-12-22 10:34:51 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/24b3b922-ce43-4b8f-9eef-d9cba3b1b1cd

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/108705/
Detection(s):
SecuriteInfo.com.Artemis14592D685324.26676.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Unauthorized injection to a recently created process
Creating a file
DNS request
Sending a custom TCP request
Using the Windows Management Instrumentation requests
Sending a UDP request
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Enabling autorun by creating a file
Enabling autorun
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.
Result
Threat name:
AsyncRAT
Create hunting rule
Detection:
malicious
Classification:
troj.adwa.evad
Score:
96 / 100
Link:
https://www.joesandbox.com/analysis/568126
Signature
.NET source code contains very large strings
Creates an undocumented autostart registry key
Creates autostart registry keys with suspicious names
Creates multiple autostart registry keys
Drops PE files to the startup folder
Injects a PE file into a foreign processes
Machine Learning detection for dropped file
Machine Learning detection for sample
Multi AV Scanner detection for domain / URL
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Uses dynamic DNS services
Yara detected AsyncRAT
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 333136 Sample: SKM_C258201001130020005057.exe Startdate: 22/12/2020 Architecture: WINDOWS Score: 96 39 Multi AV Scanner detection for domain / URL 2->39 41 Yara detected AsyncRAT 2->41 43 Machine Learning detection for sample 2->43 45 4 other signatures 2->45 6 SKM_C258201001130020005057.exe 3 5 2->6         started        10 SKM_C258201001130020005057.exe 2->10         started        12 SKM_C258201001130020005057.exe 2 2->12         started        14 3 other processes 2->14 process3 file4 31 C:\Users\...\SKM_C258201001130020005057.exe, PE32 6->31 dropped 33 SKM_C2582010011300...exe:Zone.Identifier, ASCII 6->33 dropped 35 C:\...\SKM_C258201001130020005057.exe.log, ASCII 6->35 dropped 47 Creates an undocumented autostart registry key 6->47 49 Drops PE files to the startup folder 6->49 51 Injects a PE file into a foreign processes 6->51 16 SKM_C258201001130020005057.exe 2 6->16         started        53 Creates autostart registry keys with suspicious names 10->53 55 Creates multiple autostart registry keys 10->55 19 SKM_C258201001130020005057.exe 10->19         started        21 WMIADAP.exe 10->21         started        23 SKM_C258201001130020005057.exe 2 12->23         started        25 SKM_C258201001130020005057.exe 2 14->25         started        27 SKM_C258201001130020005057.exe 2 14->27         started        29 SKM_C258201001130020005057.exe 14->29         started        signatures5 process6 dnsIp7 37 severdops.ddns.net 103.99.1.128, 49722, 6204 VNPT-AS-VNVIETNAMPOSTSANDTELECOMMUNICATIONSGROUPVN Viet Nam 16->37
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/383536471e06eef80e55ff074d896710948eb79d3f90b734b4d32e0876faa79c/
Threat name:
ByteCode-MSIL.Trojan.AsyncRAT
Create hunting rule
Status:
Malicious
First seen:
2020-12-22 09:30:53 UTC
AV detection:
17 of 29 (58.62%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=ha2tmry6a3xpqdsv74du3clhccki5n45h6ilonfu2mxaq5x2u6oa._file
Verdict:
malicious
Label(s):
asyncrat
Create hunting rule
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867eb496d9f6122024560c00e0a2fde238fed90558dd0b4b838047c8eed8196c
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8d29f4ed1dfb22f2b11e74a065ca6f8993cead1cbd965f576a935cf80fb1afc7
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8dd3b9fb0158903433d23f879d07820b8110a4b6417f3deda72342c2f698384e
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c853a4beac9f6fcea2bb9ad13b17eafd6605cac76899edbecd88d4f981d9f432
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fc926b2871dc293ad75ff0caf3863adc75b9342a34c1965c3991f512a2f666c8
AsyncRAT
+ 515 additional samples on MalwareBazaar
Result
Malware family:
asyncrat
Create hunting rule
Score:
  10/10
Tags:
family:asyncrat persistence rat
Link:
https://tria.ge/reports/201222-jx1pcnr646/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Suspicious use of SetThreadContext
Adds Run key to start application
Drops startup file
Async RAT payload
AsyncRat
Modifies WinLogon for persistence
Malware Config
C2 Extraction:
severdops.ddns.net:6204
Unpacked files
SH256 hash:
383536471e06eef80e55ff074d896710948eb79d3f90b734b4d32e0876faa79c
MD5 hash:
14592d68532406530e07a1027e89b14f
SHA1 hash:
f58566c500070cd8878c45885bbb0ca5e36e79f1
Link:
https://www.unpac.me/results/fca6f9f7-ef3b-4919-8b96-326d8b26a2ad/
SH256 hash:
9330618f0fd4dff61e1b60fa874a0ca9eed9f7ae48f6be7faf94d1dc619da640
MD5 hash:
6301c3c19dee9708dee8d42f63543b0a
SHA1 hash:
a249b6ac45d876b126dae3e6182ac9fe8613ff54
Link:
https://www.unpac.me/results/fca6f9f7-ef3b-4919-8b96-326d8b26a2ad/
SH256 hash:
f7e1133b59f985049932c43a277a3da6621398bcf662cef39fb18bc0b1dd5e3e
MD5 hash:
4bfc8afcff8d0a13ad46828bf26577ce
SHA1 hash:
ba852a568075c7f425d2861cabba680f75317647
Detections:
win_asyncrat_w0
Create hunting rule
Link:
https://www.unpac.me/results/fca6f9f7-ef3b-4919-8b96-326d8b26a2ad/
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Backdoor
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/383536471e06eef80e55ff074d896710948eb79d3f90b734b4d32e0876faa79c

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: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.

Malspam

AsyncRAT

7z f99c9b0f259e89bb1ae16d65f5c86f46013dbdf1cd39674e0317d76fd004e0fa

AsyncRAT

Executable exe 383536471e06eef80e55ff074d896710948eb79d3f90b734b4d32e0876faa79c

(this sample)

  
Dropped by
MD5 5818eef1d0bca709aefc9ff05cf1bd0d
  
Delivery method
Distributed via e-mail attachment
  
Dropped by
SHA256 f99c9b0f259e89bb1ae16d65f5c86f46013dbdf1cd39674e0317d76fd004e0fa
Cape
Cape
https://www.capesandbox.com/analysis/108705/

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