MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 3fb05be6f9437b4193be86c5c498d812e96b0cfd8682f8fffee9a4f8adaedfe5. 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: 11


Intelligence 11 IOCs 1 YARA 3 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 3fb05be6f9437b4193be86c5c498d812e96b0cfd8682f8fffee9a4f8adaedfe5
SHA3-384 hash: 6121994b77d494070623386e4774305173654024225d918d1eec7aa3922ea444fbda27165840cc0573439926cc4051d6
SHA1 hash: 02dc013cbecf82a1967b4562f3c82d8d6b7499ba
MD5 hash: 91952d77440244071732d42cb9e476a1
humanhash: potato-wisconsin-kentucky-king
File name:SERFINANZAEXTRACTO286648302187037087196744955.exe
Download: download sample
Signature RemcosRAT
Create hunting rule
File size:19'328 bytes
First seen:2021-06-15 03:21:32 UTC
Last seen:2021-06-15 03:36:40 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'744 x AgentTesla, 19'609 x Formbook, 12'242 x SnakeKeylogger)
ssdeep 384:udK7tKMzaeQJWDl4CBqT2E0SLJcW2JpHG61U9JBffJEXesQ7H7e799JhR:uYJKVeQSRqTz0SL12J1G4U5fJEUDyZ9d
Threatray 1'810 similar samples on MalwareBazaar
TLSH 73924CB7DE84CD58E81B4A37F4B0850837B1775FA672FF8B49D490064B433963678A2A
Reporter abuse_ch
Tags:exe RAT RemcosRAT


Avatar
abuse_ch
RemcosRAT C2:
186.169.54.239:1921

Indicators Of Compromise (IOCs)

Below is a list of indicators of compromise (IOCs) associated with this malware samples.

IOCThreatFox Reference
186.169.54.239:1921 https://threatfox.abuse.ch/ioc/114972/

Intelligence

File Origin
# of uploads :
2
# of downloads :
156
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
SERFINANZAEXTRACTO286648302187037087196744955.exe
Verdict:
Malicious activity
Analysis date:
2021-06-15 03:24:23 UTC
Tags:
trojan
Link:
https://app.any.run/tasks/f466d69c-964f-44e9-8a87-fcc66c902846

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection(s):
SecuriteInfo.com.Variant.Bulz.516692.23072.3015.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
DNS request
Sending an HTTP GET request
Creating a file
Moving a recently created file
Running batch commands
Creating a process with a hidden window
Launching a process
Sending a UDP request
Adding an access-denied ACE
Creating a file in the %AppData% subdirectories
Enabling the 'hidden' option for recently created files
Creating a file in the %temp% directory
Creating a process from a recently created file
Creating a window
Deleting a recently created file
Unauthorized injection to a recently created process
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Unauthorized injection to a recently created process by context flags manipulation
Setting a global event handler for the keyboard
Connection attempt to an infection source
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.
Malware family:
REMCOS
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/49315c78-da0d-4502-a761-152e92d001d2
Result
Threat name:
Remcos
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/802097
Signature
C2 URLs / IPs found in malware configuration
Contains functionality to capture and log keystrokes
Contains functionality to hide a thread from the debugger
Contains functionality to inject code into remote processes
Contains functionality to steal Chrome passwords or cookies
Contains functionality to steal Firefox passwords or cookies
Country aware sample found (crashes after keyboard check)
Detected Remcos RAT
Found malware configuration
Hides threads from debuggers
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)
Sigma detected: WScript or CScript Dropper
Tries to evade analysis by execution special instruction which cause usermode exception
Yara detected Remcos RAT
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 434493 Sample: SERFINANZAEXTRACTO286648302... Startdate: 15/06/2021 Architecture: WINDOWS Score: 100 101 Found malware configuration 2->101 103 Malicious sample detected (through community Yara rule) 2->103 105 Detected Remcos RAT 2->105 107 5 other signatures 2->107 11 SERFINANZAEXTRACTO286648302187037087196744955.exe 15 8 2->11         started        15 ProService.exe 3 2->15         started        17 ProService.exe 2->17         started        process3 dnsIp4 97 apdocroto.gq 172.67.158.27, 49734, 49744, 80 CLOUDFLARENETUS United States 11->97 119 Contains functionality to steal Chrome passwords or cookies 11->119 121 Contains functionality to capture and log keystrokes 11->121 123 Contains functionality to inject code into remote processes 11->123 125 Contains functionality to steal Firefox passwords or cookies 11->125 19 SERFINANZAEXTRACTO286648302187037087196744955.exe 4 5 11->19         started        22 WerFault.exe 11->22         started        26 cmd.exe 1 11->26         started        28 WerFault.exe 11->28         started        127 Hides threads from debuggers 15->127 129 Injects a PE file into a foreign processes 15->129 30 WerFault.exe 15->30         started        32 cmd.exe 15->32         started        34 ProService.exe 15->34         started        36 WerFault.exe 17->36         started        38 2 other processes 17->38 signatures5 process6 dnsIp7 81 C:\Users\user\AppData\...\ProService.exe, PE32 19->81 dropped 83 C:\Users\...\ProService.exe:Zone.Identifier, ASCII 19->83 dropped 85 C:\Users\user\AppData\Local\...\install.vbs, data 19->85 dropped 40 wscript.exe 1 19->40         started        93 192.168.2.1 unknown unknown 22->93 109 Tries to evade analysis by execution special instruction which cause usermode exception 22->109 42 conhost.exe 26->42         started        44 timeout.exe 1 26->44         started        87 C:\ProgramData\Microsoft\...\Report.wer, Little-endian 30->87 dropped 46 conhost.exe 32->46         started        48 timeout.exe 32->48         started        89 C:\ProgramData\Microsoft\...\Report.wer, Little-endian 36->89 dropped 50 conhost.exe 38->50         started        52 timeout.exe 38->52         started        file8 signatures9 process10 process11 54 cmd.exe 1 40->54         started        process12 56 ProService.exe 14 7 54->56         started        61 conhost.exe 54->61         started        dnsIp13 95 apdocroto.gq 56->95 91 C:\Users\user\AppData\...\jmcduj2q.newcfg, XML 56->91 dropped 111 Machine Learning detection for dropped file 56->111 113 Contains functionality to steal Chrome passwords or cookies 56->113 115 Contains functionality to capture and log keystrokes 56->115 117 4 other signatures 56->117 63 ProService.exe 56->63         started        66 WerFault.exe 56->66         started        69 WerFault.exe 56->69         started        71 cmd.exe 56->71         started        file14 signatures15 process16 dnsIp17 99 databasenash2020.online 186.169.54.239, 1921 COLOMBIATELECOMUNICACIONESSAESPCO Colombia 63->99 77 C:\ProgramData\Microsoft\...\Report.wer, Little-endian 66->77 dropped 79 C:\ProgramData\Microsoft\...\Report.wer, Little-endian 69->79 dropped 73 conhost.exe 71->73         started        75 timeout.exe 71->75         started        file18 process19
Detection:
remcos
Create hunting rule
Link:
https://mwdb.cert.pl/sample/3fb05be6f9437b4193be86c5c498d812e96b0cfd8682f8fffee9a4f8adaedfe5/
Threat name:
Win32.Trojan.Bulz
Create hunting rule
Status:
Malicious
First seen:
2021-06-15 03:22:10 UTC
AV detection:
7 of 46 (15.22%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=h6yfxzxzin5ude56q3c4jggycluwwdh5q2bpr7765gsprlno37sq._file
Verdict:
malicious
Label(s):
remcos
Create hunting rule
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RemcosRAT
+ 1'800 additional samples on MalwareBazaar
Result
Malware family:
remcos
Create hunting rule
Score:
  10/10
Tags:
family:remcos botnet:proservices persistence rat
Link:
https://tria.ge/reports/210615-twdy98kpvj/
Behaviour
Delays execution with timeout.exe
Modifies registry class
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Program crash
Suspicious use of NtSetInformationThreadHideFromDebugger
Suspicious use of SetThreadContext
Adds Run key to start application
Loads dropped DLL
Executes dropped EXE
Remcos
Malware Config
C2 Extraction:
databasenash2020.online:1921
Unpacked files
SH256 hash:
3fb05be6f9437b4193be86c5c498d812e96b0cfd8682f8fffee9a4f8adaedfe5
MD5 hash:
91952d77440244071732d42cb9e476a1
SHA1 hash:
02dc013cbecf82a1967b4562f3c82d8d6b7499ba
Link:
https://www.unpac.me/results/00dd479b-05b4-4da5-a35f-b0c537fa54b1/
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Suspicious File
Score:
0.35
Link:
https://yomi.yoroi.company/submissions/3fb05be6f9437b4193be86c5c498d812e96b0cfd8682f8fffee9a4f8adaedfe5

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_Stomped_PECompilation_Timestamp_InTheFu
Create hunting rule
Author:ditekSHen
Description:Detect executables with stomped PE compilation timestamp that is greater than local current time
Rule name:pe_imphash
Create hunting rule
Rule name:Skystars_Malware_Imphash
Create hunting rule
Author:Skystars LightDefender
Description:imphash

File information

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

Comments