MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 ef6a74a99e6f3945eda8bd082a0adbcc2df584aff03838ed1b5face974a4a6b7. 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: 14


Intelligence 14 IOCs YARA 5 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: ef6a74a99e6f3945eda8bd082a0adbcc2df584aff03838ed1b5face974a4a6b7
SHA3-384 hash: 5329197e1f6fccf55bbf26da03dbcdc4911e8eaa9223c3b96fabc3c6caed36233eb479837041bb1fa550fdde08c6f489
SHA1 hash: 894e2376c16d58ff16a0ad72821c41c34ca44b90
MD5 hash: cfa60bb11f5eb66fc94426161364ac9d
humanhash: stream-sink-video-saturn
File name:P.O335647892.exe
Download: download sample
Signature RemcosRAT
Create hunting rule
File size:555'112 bytes
First seen:2021-12-07 14:09:05 UTC
Last seen:2021-12-08 08:36:48 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash 7fa974366048f9c551ef45714595665e (946 x Formbook, 398 x Loki, 261 x AgentTesla)
ssdeep 12288:hPW++y1jcPZp/BigzG5OLuh9ZtJ0HdBzYo6rgJ4LB4:dT+EcPZpZry59PJ09BzosJC4
Threatray 1'079 similar samples on MalwareBazaar
TLSH T174C4235A61E20867E0235332871CFA357BBEAFC981578B0F4752FD2B66BA3436554E03
File icon (PE):PE icon
dhash icon 74e0e2e2e4e4e40b (1 x RemcosRAT, 1 x AveMariaRAT)
Reporter pr0xylife
Tags:exe RemcosRAT

Intelligence

File Origin
# of uploads :
2
# of downloads :
168
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
P.O335647892.exe
Verdict:
Malicious activity
Analysis date:
2021-12-07 21:51:03 UTC
Tags:
installer
Link:
https://app.any.run/tasks/e15d7faa-f4fb-4961-9929-ccbc77327b85

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
Remcos
Create hunting rule
Link:
https://www.capesandbox.com/analysis/212182/
Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Creating a window
Creating a file in the %temp% directory
Creating a file
Сreating synchronization primitives
Launching cmd.exe command interpreter
Creating a file in the %AppData% subdirectories
Launching a process
Changing a file
Creating a process from a recently created file
Creating a process with a hidden window
Sending a custom TCP request
Running batch commands
DNS request
Sending an HTTP GET request
Reading critical registry keys
Unauthorized injection to a recently created process
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Blocking the User Account Control
Unauthorized injection to a recently created process by context flags manipulation
Stealing user critical data
Result
Malware family:
n/a
Score:
  5/10
Tags:
n/a
Link:
https://dragonfly.certego.net/analysis/1228/overview
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
60%
Tags:
overlay packed
Link:
https://www.filescan.io/uploads/61af6b3c4d8e6f3a5e1719fd/reports/edf678a4-aedb-4ddf-8a44-6fc030d0823b/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:
Suspicious
Link:
https://analyze.intezer.com/analyses/8f8b016d-baa3-4a66-b20c-06fb7e52b829
Result
Threat name:
Remcos
Create hunting rule
Detection:
malicious
Classification:
phis.troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/903111
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
Delayed program exit found
Detected Remcos RAT
Detected unpacking (changes PE section rights)
Found 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 dropped file
Multi AV Scanner detection for submitted file
Sigma detected: Suspicious Script Execution From Temp Folder
Sigma detected: WScript or CScript Dropper
Tries to harvest and steal browser information (history, passwords, etc)
Tries to steal Instant Messenger accounts or passwords
Tries to steal Mail credentials (via file / registry access)
Uses cmd line tools excessively to alter registry or file data
Yara detected Remcos RAT
Yara detected WebBrowserPassView password recovery tool
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 535588 Sample: P.O335647892.exe Startdate: 07/12/2021 Architecture: WINDOWS Score: 100 63 Found malware configuration 2->63 65 Malicious sample detected (through community Yara rule) 2->65 67 Multi AV Scanner detection for submitted file 2->67 69 7 other signatures 2->69 9 remcos.exe 16 2->9         started        13 P.O335647892.exe 17 2->13         started        process3 file4 53 C:\Users\user\AppData\...\frzuefbuhot.dll, PE32 9->53 dropped 79 Multi AV Scanner detection for dropped file 9->79 81 Detected unpacking (changes PE section rights) 9->81 83 Machine Learning detection for dropped file 9->83 91 2 other signatures 9->91 15 remcos.exe 2 13 9->15         started        55 C:\Users\user\AppData\...\frzuefbuhot.dll, PE32 13->55 dropped 85 Contains functionality to steal Chrome passwords or cookies 13->85 87 Contains functionality to inject code into remote processes 13->87 89 Contains functionality to steal Firefox passwords or cookies 13->89 19 P.O335647892.exe 4 5 13->19         started        signatures5 process6 dnsIp7 57 185.157.161.174, 49780, 49782, 49783 OBE-EUROPEObenetworkEuropeSE Sweden 15->57 59 hotmarzz.eu 195.110.124.154, 49784, 80 REGISTER-ASIT Italy 15->59 61 Injects a PE file into a foreign processes 15->61 22 remcos.exe 1 15->22         started        25 cmd.exe 1 15->25         started        27 remcos.exe 2 15->27         started        29 remcos.exe 1 15->29         started        47 C:\Users\user\AppData\Roaming\...\remcos.exe, PE32 19->47 dropped 49 C:\Users\user\...\remcos.exe:Zone.Identifier, ASCII 19->49 dropped 51 C:\Users\user\AppData\Local\...\install.vbs, data 19->51 dropped 31 cmd.exe 1 19->31         started        33 wscript.exe 1 19->33         started        file8 signatures9 process10 signatures11 71 Tries to steal Instant Messenger accounts or passwords 22->71 73 Tries to steal Mail credentials (via file / registry access) 22->73 35 conhost.exe 25->35         started        37 reg.exe 1 25->37         started        75 Tries to harvest and steal browser information (history, passwords, etc) 27->75 77 Uses cmd line tools excessively to alter registry or file data 31->77 39 conhost.exe 31->39         started        41 reg.exe 1 31->41         started        43 cmd.exe 1 33->43         started        process12 process13 45 conhost.exe 43->45         started       
Detection:
remcos
Create hunting rule
Link:
https://mwdb.cert.pl/sample/ef6a74a99e6f3945eda8bd082a0adbcc2df584aff03838ed1b5face974a4a6b7/
Threat name:
Win32.Trojan.LokiBot
Create hunting rule
Status:
Malicious
First seen:
2021-12-07 14:10:13 UTC
File Type:
PE (Exe)
Extracted files:
3
AV detection:
21 of 28 (75.00%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=55vhjkm6n44ul3nixuecucw3zqw7lbfp6a4dr3i3l6wos5feu23q._file
Verdict:
malicious
Label(s):
remcos
Create hunting rule
Similar samples:
18f51c19c22914e634d9cfcd86018e676e91d1c4a9293c247a3c9da84dce3f60
RemcosRAT
4a843bea699f8a40ae3b92c04e01139d61880ce1c519e369a966e814593d1d81
RemcosRAT
6862cf51b5546665e90e27a0a188ea8c468097f86b8b5d68fa0521f4cd3a9550
RemcosRAT
7a25e7868a967540a3dc4c8fa89f07444c4b714c4d2f3add235a7f0c33099c57
RemcosRAT
af171290cc03d72c2c1272b039193cb71fdec5b612330f832dad2220753cb406
RemcosRAT
+ 1'069 additional samples on MalwareBazaar
Result
Malware family:
remcos
Create hunting rule
Score:
  10/10
Tags:
family:agenttesla family:blustealer family:hawkeye family:remcos botnet:imustmakeamthisyear collection evasion keylogger persistence rat spyware stealer trojan
Link:
https://tria.ge/reports/211207-rgqdhschd8/
Behaviour
Modifies registry class
Modifies registry key
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
outlook_office_path
outlook_win_path
NSIS installer
Enumerates physical storage devices
Program crash
Suspicious use of SetThreadContext
Accesses Microsoft Outlook accounts
Accesses Microsoft Outlook profiles
Adds Run key to start application
Looks up external IP address via web service
Loads dropped DLL
Reads data files stored by FTP clients
Reads user/profile data of local email clients
Reads user/profile data of web browsers
Uses the VBS compiler for execution
Downloads MZ/PE file
Executes dropped EXE
AgentTesla Payload
NirSoft MailPassView
NirSoft WebBrowserPassView
Nirsoft
AgentTesla
BluStealer
HawkEye
Remcos
UAC bypass
Malware Config
C2 Extraction:
185.157.161.174:9090
Unpacked files
SH256 hash:
ef6a74a99e6f3945eda8bd082a0adbcc2df584aff03838ed1b5face974a4a6b7
MD5 hash:
cfa60bb11f5eb66fc94426161364ac9d
SHA1 hash:
894e2376c16d58ff16a0ad72821c41c34ca44b90
Link:
https://www.unpac.me/results/798d0387-9a3a-4452-aab1-47709cb6f273/
Malware family:
Remcos
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/ef6a74a99e6f/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Legit
Score:
0.23
Link:
https://yomi.yoroi.company/submissions/ef6a74a99e6f3945eda8bd082a0adbcc2df584aff03838ed1b5face974a4a6b7

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:INDICATOR_SUSPICIOUS_EXE_UACBypass_EventViewer
Create hunting rule
Author:ditekSHen
Description:detects Windows exceutables potentially bypassing UAC using eventvwr.exe
Rule name:Remcos
Create hunting rule
Author:kevoreilly
Description:Remcos Payload
Rule name:remcos_rat
Create hunting rule
Author:jeFF0Falltrades
Rule name:REMCOS_RAT_variants
Create hunting rule

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/212182/

Comments