MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 b61f6b794f38f736e90ae8aa04e5f71acc8d5470c08ef8841c16087b6710a388. 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 File information Comments

SHA256 hash: b61f6b794f38f736e90ae8aa04e5f71acc8d5470c08ef8841c16087b6710a388
SHA3-384 hash: b921e9d7e7afa69ec5c17c86b694297ecda446670f1fed151e5114d782fc43ce5b0c1b24af7912fd5beea9ff2f826047
SHA1 hash: 18a3665edcb3b3d3c53f9755bc225569a64ae642
MD5 hash: 8da164753530662b1f603f7b23413223
humanhash: august-pasta-grey-charlie
File name:Appraisal11002275444900.vbs
Download: download sample
Signature RemcosRAT
File size:662 bytes
First seen:2021-04-20 05:59:55 UTC
Last seen:Never
File type:Visual Basic Script (vbs) vbs
MIME type:text/plain
ssdeep 12:Whmlh4iBHodpd0LynPFhyBF3zTcg3tbXSt1mjRu+lNmY/OLAW:Wk80Hgd1niBF3zl3tbit1CRu6NmTLAW
Threatray 165 similar samples on MalwareBazaar
TLSH 09018115D72404E33551FE5350D2152CCEA659FB42C071500131D6B759FC7FAAE830E2
Reporter abuse_ch
Tags:RAT RemcosRAT vbs

Intelligence


File Origin
# of uploads :
1
# of downloads :
141
Origin country :
n/a
Vendor Threat Intelligence
Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Launching a process
Creating a process with a hidden window
Sending a UDP request
DNS request
Sending a custom TCP request
Creating a file
Connection attempt
Enabling the 'hidden' option for recently created files
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:
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
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
Obfuscated command line found
Sigma detected: Remcos
VBScript performs obfuscated calls to suspicious functions
Writes to foreign memory regions
Wscript starts Powershell (via cmd or directly)
Yara detected MSILLoadEncryptedAssembly
Yara detected Powershell download and execute
Yara detected Remcos RAT
Behaviour
Behavior Graph:
behaviorgraph top1 signatures2 2 Behavior Graph ID: 393118 Sample: Appraisal11002275444900.vbs Startdate: 20/04/2021 Architecture: WINDOWS Score: 100 48 Found malware configuration 2->48 50 Malicious sample detected (through community Yara rule) 2->50 52 Multi AV Scanner detection for submitted file 2->52 54 6 other signatures 2->54 8 wscript.exe 1 2->8         started        process3 signatures4 66 VBScript performs obfuscated calls to suspicious functions 8->66 68 Wscript starts Powershell (via cmd or directly) 8->68 70 Obfuscated command line found 8->70 11 powershell.exe 14 22 8->11         started        process5 dnsIp6 38 ia601505.us.archive.org 207.241.227.115, 443, 49741 INTERNET-ARCHIVEUS United States 11->38 40 ia601405.us.archive.org 207.241.227.125, 443, 49732 INTERNET-ARCHIVEUS United States 11->40 42 ia801400.us.archive.org 207.241.228.140, 443, 49737 INTERNET-ARCHIVEUS United States 11->42 34 C:\Users\Public\ Microsoft.ps1, ASCII 11->34 dropped 72 Creates an undocumented autostart registry key 11->72 16 powershell.exe 20 11->16         started        19 conhost.exe 11->19         started        file7 signatures8 process9 signatures10 44 Writes to foreign memory regions 16->44 46 Injects a PE file into a foreign processes 16->46 21 aspnet_regbrowsers.exe 16->21         started        24 aspnet_regbrowsers.exe 2 2 16->24         started        28 aspnet_regbrowsers.exe 16->28         started        30 5 other processes 16->30 process11 dnsIp12 56 Contains functionality to steal Chrome passwords or cookies 21->56 58 Contains functionality to inject code into remote processes 21->58 60 Contains functionality to steal Firefox passwords or cookies 21->60 62 Delayed program exit found 21->62 36 194.5.97.183, 49751, 8888 DANILENKODE Netherlands 24->36 32 C:\Users\user\AppData\Roaming\...\logs.dat, data 24->32 dropped 64 Installs a global keyboard hook 24->64 file13 signatures14
Gathering data
Result
Malware family:
Score:
  10/10
Tags:
family:remcos rat
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
Remcos
Malware Config
C2 Extraction:
194.5.97.183:8888
Please note that we are no longer able to provide a coverage score for Virus Total.

File information


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

Comments