MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 109a40435ad446c7b03af30bb049f55275a659c0271fa7a8a1a59d5871d18c10. 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


RemcosRAT


Vendor detections: 8


Intelligence 8 IOCs YARA 20 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 109a40435ad446c7b03af30bb049f55275a659c0271fa7a8a1a59d5871d18c10
SHA3-384 hash: 0be59b67e9fcf2789dd388d6e8c217934d494c8503ce263aafda10c225c41b2156fe6e32340fc4a6d8a2866ca3591bde
SHA1 hash: d55fbf7a33cec471dd6270908cfb752d67861081
MD5 hash: f84117fca79609ea125b4bb794208325
humanhash: massachusetts-connecticut-louisiana-yellow
File name:Appraisal.report.vbs
Download: download sample
Signature RemcosRAT
Create hunting rule
File size:934 bytes
First seen:2021-05-13 12:06:28 UTC
Last seen:Never
File type:Visual Basic Script (vbs) vbs
MIME type:text/plain
ssdeep 12:75ghYN3v/2B7Ue3R5FJQDFz1lcM8F+XUfEoPBq77wHx7WFqMDgeJre6ZN3ZCBbpf:7iBNyd8F+IVBEux7WFtvxe6dCBo53yb
Threatray 219 similar samples on MalwareBazaar
TLSH F711ED11770A8B6B312F96664680BC6891106A10A49C7345883241D22ABC6BBDF66CD7
Reporter abuse_ch
Tags:RAT RemcosRAT vbs

Intelligence

File Origin
# of uploads :
1
# of downloads :
142
Origin country :
n/a
Vendor Threat Intelligence
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/156145/
Detection(s):
SecuriteInfo.com.Trojan.JS.Agent.UCM.16318.21418.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Launching a process
Creating a process with a hidden window
DNS request
Sending a custom TCP request
Sending a UDP request
Creating a file
Creating a process from a recently created file
Enabling the 'hidden' option for recently created files
Sending a TCP request to an infection source
Forced shutdown of a system process
Creating a file in the %AppData% subdirectories
Enabling autorun by creating a file
Unauthorized injection to a system process
Result
Verdict:
MALICIOUS
Result
Threat name:
Remcos AsyncRAT
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/780966
Signature
C2 URLs / IPs found in malware configuration
Contains functionality to inject code into remote processes
Contains functionality to steal Chrome passwords or cookies
Contains functionality to steal Firefox passwords or cookies
Creates an undocumented autostart registry key
Delayed program exit found
Detected Remcos RAT
Found malware configuration
Injects a PE file into a foreign processes
Installs a global keyboard hook
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for submitted file
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
VBScript performs obfuscated calls to suspicious functions
Writes to foreign memory regions
Wscript starts Powershell (via cmd or directly)
Yara detected AsyncRAT
Yara detected MSILLoadEncryptedAssembly
Yara detected Powershell download and execute
Yara detected Remcos RAT
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 413364 Sample: Appraisal.report.vbs Startdate: 13/05/2021 Architecture: WINDOWS Score: 100 45 Found malware configuration 2->45 47 Malicious sample detected (through community Yara rule) 2->47 49 Multi AV Scanner detection for submitted file 2->49 51 7 other signatures 2->51 8 wscript.exe 1 2->8         started        process3 signatures4 61 VBScript performs obfuscated calls to suspicious functions 8->61 63 Wscript starts Powershell (via cmd or directly) 8->63 11 powershell.exe 14 23 8->11         started        process5 dnsIp6 35 archive.org 207.241.224.2, 443, 49720 INTERNET-ARCHIVEUS United States 11->35 37 ia601505.us.archive.org 207.241.227.115, 443, 49722 INTERNET-ARCHIVEUS United States 11->37 39 3 other IPs or domains 11->39 27 PowerShell_transcr....20210513141635.txt, UTF-8 11->27 dropped 29 C:\Users\Public\Microsoft.ps1, ASCII 11->29 dropped 65 Creates an undocumented autostart registry key 11->65 16 powershell.exe 23 11->16         started        19 conhost.exe 11->19         started        file7 signatures8 process9 signatures10 41 Writes to foreign memory regions 16->41 43 Injects a PE file into a foreign processes 16->43 21 aspnet_compiler.exe 2 2 16->21         started        25 aspnet_compiler.exe 2 16->25         started        process11 dnsIp12 31 185.19.85.168, 1723, 49727 DATAWIRE-ASCH Switzerland 21->31 53 Contains functionality to steal Chrome passwords or cookies 21->53 55 Contains functionality to inject code into remote processes 21->55 57 Contains functionality to steal Firefox passwords or cookies 21->57 59 2 other signatures 21->59 33 14.191.50.101, 49730, 49731, 49732 VNPT-AS-VNVNPTCorpVN Viet Nam 25->33 signatures13
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/109a40435ad446c7b03af30bb049f55275a659c0271fa7a8a1a59d5871d18c10/
Threat name:
Script-WScript.Downloader.Heuristic
Create hunting rule
Status:
Malicious
First seen:
2021-05-13 03:02:57 UTC
AV detection:
14 of 47 (29.79%)
Threat level:
  2/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=ccneaq222rdmpmb26mf3aspvkj22mwoae4p2pkfbuwovq4orrqia._file
Verdict:
malicious
Label(s):
asyncrat
Create hunting rule
remcos
Create hunting rule
Similar samples:
01b1f2041aaba6815657a7a7409a0843868459fa3cabf0c377a83862ac88a27f
RemcosRAT
32c3d29676757629b7ceeafd699c33c14147a79fc07a54889e6f66cd5118b123
RemcosRAT
3c0df5607ab1e7bf906ce2be36ee0bb970c26baf19710f0c195ca9356a2d918f
RemcosRAT
5f06da67169389577ec237bfb0c3e0e9203833048f48081deed7b6201ad18c27
RemcosRAT
8c3a6d5b05325958afeb7885e7d4bbe59f7f5a849b5acdf0a8f7cbb8febc4a81
RemcosRAT
a465bb35f4e7bafb2fea17156c39daee286e49c3f10463ecb8d29766e2d0b200
RemcosRAT
a5ae2e0f9a8f1c50e21ea93f4a195097753cd16436ffa4e946add38da873c8cb
RemcosRAT
cd91b0fbaabf19d178f3a221c517418378913af82ca88856a07cbf0df506f117
RemcosRAT
d2d9b66c9aad0e6cc20a786a89299a8b4a65a5a344db369dfd7bfbad3fb40b55
RemcosRAT
fda270ad50aed906730605ca93ecaa3e24792dd070bb443f94d2d6c23124ad61
RemcosRAT
+ 209 additional samples on MalwareBazaar
Result
Malware family:
remcos
Create hunting rule
Score:
  10/10
Tags:
family:asyncrat family:remcos rat
Link:
https://tria.ge/reports/210513-ty5pagnhns/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Suspicious use of SetThreadContext
Blocklisted process makes network request
Async RAT payload
AsyncRat
Remcos
Malware Config
C2 Extraction:
185.19.85.168:1723
Dropper Extraction:
https://ia601408.us.archive.org/31/items/all_20210512_20210512/ALL.TXT
Please note that we are no longer able to provide a coverage score for Virus Total.

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:ach_RemcosRAT
Create hunting rule
Author:abuse.ch
Rule name:asyncrat
Create hunting rule
Author:JPCERT/CC Incident Response Group
Description:detect AsyncRat in memory
Reference:internal research
Rule name:Chrome_stealer_bin_mem
Create hunting rule
Author:James_inthe_box
Description:Chrome in files like avemaria
Rule name:Email_stealer_bin_mem
Create hunting rule
Author:James_inthe_box
Description:Email in files like avemaria
Rule name:INDICATOR_EXE_Packed_MPress
Create hunting rule
Author:ditekSHen
Description:Detects executables built or packed with MPress PE compressor
Rule name:INDICATOR_SUSPICIOUS_EXE_ASEP_REG_Reverse
Create hunting rule
Author:ditekSHen
Description:Detects file containing reversed ASEP Autorun registry keys
Rule name:INDICATOR_SUSPICIOUS_EXE_References_Confidential_Data_Store
Create hunting rule
Author:ditekSHen
Description:Detects executables referencing many confidential data stores found in browsers, mail clients, cryptocurreny wallets, etc. Observed in information stealers
Rule name:INDICATOR_SUSPICIOUS_EXE_Referenfces_Messaging_Clients
Create hunting rule
Author:ditekSHen
Description:Detects executables referencing many email and collaboration clients. Observed in information stealers
Rule name:INDICATOR_SUSPICIOUS_EXE_UACBypass_EventViewer
Create hunting rule
Author:ditekSHen
Description:detects Windows exceutables potentially bypassing UAC using eventvwr.exe
Rule name:Keylog_bin_mem
Create hunting rule
Author:James_inthe_box
Description:Contains Keylog
Rule name:pe_imphash
Create hunting rule
Rule name:PowerShell_Case_Anomaly
Create hunting rule
Author:Florian Roth
Description:Detects obfuscated PowerShell hacktools
Reference:https://twitter.com/danielhbohannon/status/905096106924761088
Rule name:remcos_rat
Create hunting rule
Author:jeFF0Falltrades
Rule name:REMCOS_RAT_variants
Create hunting rule
Rule name:Reverse_text_bin_mem
Create hunting rule
Author:James_inthe_box
Description:Reverse text detected
Rule name:Skystars_Malware_Imphash
Create hunting rule
Author:Skystars LightDefender
Description:imphash
Rule name:suspicious_packer_section
Create hunting rule
Author:@j0sm1
Description:The packer/protector section names/keywords
Reference:http://www.hexacorn.com/blog/2012/10/14/random-stats-from-1-2m-samples-pe-section-names/
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
Rule name:with_sqlite
Create hunting rule
Author:Julian J. Gonzalez <info@seguridadparatodos.es>
Description:Rule to detect the presence of SQLite data in raw image
Reference:http://www.st2labs.com

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/156145/

Comments