MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 b9f87900e53b232ee34c913e7b66cc0fa420dd3af54b12ff25fcbf1c64d0d934. 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 1 YARA 10 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: b9f87900e53b232ee34c913e7b66cc0fa420dd3af54b12ff25fcbf1c64d0d934
SHA3-384 hash: 8410cb67403239ca102e618a1138caf5320b5dbf5f42d5060d428c4ba7022bd536e7028bdcf3707591e6af15f2ee5078
SHA1 hash: b4680650bbdb95b4bb5148d299fc23df7b7b710a
MD5 hash: dc118f13f61651753aec111329580d88
humanhash: venus-thirteen-december-cat
File name:SERFINANZAEXTRACTO944199837077212444587235899.exe
Download: download sample
Signature RemcosRAT
Create hunting rule
File size:134'656 bytes
First seen:2021-04-19 00:40:21 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'742 x AgentTesla, 19'606 x Formbook, 12'242 x SnakeKeylogger)
ssdeep 1536:fUXUAOWmxPjaoTvorlis7UEQ52jhTgConmS1111PRSI8Y5RM54xIRfzKs3UL:sXVmhmlPQ529TgeS1111PR6s1P
Threatray 1'713 similar samples on MalwareBazaar
TLSH 04D37CD7FA542D99E8361CB648375130473BDEE82D15C6428AEC7F5A7E22CC369B2072
Reporter abuse_ch
Tags:exe RAT RemcosRAT


Avatar
abuse_ch
RemcosRAT C2:
186.169.74.198:3521

Indicators Of Compromise (IOCs)

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

IOCThreatFox Reference
186.169.74.198:3521 https://threatfox.abuse.ch/ioc/8917/

Intelligence

File Origin
# of uploads :
1
# of downloads :
140
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
SERFINANZAEXTRACTO944199837077212444587235899.exe
Verdict:
Malicious activity
Analysis date:
2021-04-19 00:41:17 UTC
Tags:
trojan dtloader loader rat remcos keylogger
Link:
https://app.any.run/tasks/eba84f11-a32e-4c32-8639-be7e3c06650c

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/138088/
Result
Verdict:
Malware
Maliciousness:

Behaviour
DNS request
Sending an HTTP GET request
Creating a file
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 process with a hidden window
Creating a window
Deleting a recently created file
Running batch commands
Sending a UDP request
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
Sending a TCP request to an infection source
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:
Remcos
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/685807
Signature
C2 URLs / IPs found in malware configuration
Contains functionality to capture and log keystrokes
Contains functionality to inject code into remote processes
Contains functionality to steal Chrome passwords or cookies
Contains functionality to steal Firefox passwords or cookies
Detected Remcos RAT
Found malware configuration
Machine Learning detection for dropped file
Machine Learning detection for sample
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for domain / URL
Multi AV Scanner detection for dropped file
Sigma detected: Remcos
Yara detected Remcos RAT
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 391852 Sample: SERFINANZAEXTRACTO944199837... Startdate: 19/04/2021 Architecture: WINDOWS Score: 100 61 Multi AV Scanner detection for domain / URL 2->61 63 Found malware configuration 2->63 65 Malicious sample detected (through community Yara rule) 2->65 67 5 other signatures 2->67 10 SERFINANZAEXTRACTO944199837077212444587235899.exe 15 4 2->10         started        15 PxxoServicesTrialNet1.exe 2 2->15         started        17 PxxoServicesTrialNet1.exe 2 2->17         started        process3 dnsIp4 51 mmwrlridbhmibnr.ml 104.21.86.143, 49710, 80 CLOUDFLARENETUS United States 10->51 47 SERFINANZAEXTRACTO...44587235899.exe.log, ASCII 10->47 dropped 69 Contains functionality to steal Chrome passwords or cookies 10->69 71 Contains functionality to capture and log keystrokes 10->71 73 Contains functionality to inject code into remote processes 10->73 75 Contains functionality to steal Firefox passwords or cookies 10->75 19 SERFINANZAEXTRACTO944199837077212444587235899.exe 4 5 10->19         started        22 PxxoServicesTrialNet1.exe 15->22         started        24 PxxoServicesTrialNet1.exe 15->24         started        26 PxxoServicesTrialNet1.exe 17->26         started        file5 signatures6 process7 file8 43 C:\Users\user\...\PxxoServicesTrialNet1.exe, PE32 19->43 dropped 45 PxxoServicesTrialN...exe:Zone.Identifier, ASCII 19->45 dropped 28 wscript.exe 1 19->28         started        process9 process10 30 cmd.exe 1 28->30         started        process11 32 PxxoServicesTrialNet1.exe 3 30->32         started        36 conhost.exe 30->36         started        file12 41 C:\Users\...\PxxoServicesTrialNet1.exe.log, ASCII 32->41 dropped 53 Multi AV Scanner detection for dropped file 32->53 55 Machine Learning detection for dropped file 32->55 57 Contains functionality to steal Chrome passwords or cookies 32->57 59 2 other signatures 32->59 38 PxxoServicesTrialNet1.exe 2 4 32->38         started        signatures13 process14 dnsIp15 49 databasepropersonombrecomercialideasearchwords.services 186.169.74.198, 3521, 49725 COLOMBIATELECOMUNICACIONESSAESPCO Colombia 38->49
Detection:
remcos
Create hunting rule
Link:
https://mwdb.cert.pl/sample/b9f87900e53b232ee34c913e7b66cc0fa420dd3af54b12ff25fcbf1c64d0d934/
Gathering data
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=xh4hsahfhmrs5y2mse7hwzwmb6scbxj26vfrf7zf7s7ryzgq3e2a._file
Verdict:
malicious
Label(s):
remcos
Create hunting rule
Similar samples:
0769c1487705fd65aeacdd813882e532d3bbd4ffa7106a2015bac448d8091bbb
RemcosRAT
4579780c18fb273fd0884237c7a4021dbbb38494194d8c1840449e8a62d29251
RemcosRAT
4fe8c8398a6cf30cfd7cbed590de821abdb40aa177781c43c19bdfec75308355
RemcosRAT
522a495b289cf22898f762f18571b8839194e6232cb80fbb28dc426cbeeee323
RemcosRAT
622a12c9935eb8f0cfa499bb445642a837fa150a161e5393f7a1d759e6f94f02
RemcosRAT
833b575dac3a049ede0d27e2ff801d2e8d647cf04006f0037e1a9c71d7c8ace4
RemcosRAT
ab9041fe7e0a4a439521d6eb01cc16d74c00a0427c86b067120ac453ba7329d9
RemcosRAT
c39bdd8f7c69c3140ef920e2b1d5965310058c5fa425b871f4d7751d8291d55e
RemcosRAT
cee5cdde8972799268ab97a77880793470dfc0d93c5e697bb66f83b6675f51ba
RemcosRAT
e0d4ce0316734fce0ea0d950f0ff1b4182f1364d581c549a199ac041cfe68ebb
RemcosRAT
+ 1'703 additional samples on MalwareBazaar
Result
Malware family:
remcos
Create hunting rule
Score:
  10/10
Tags:
family:remcos persistence rat
Link:
https://tria.ge/reports/210419-8mn2f3meya/
Behaviour
Modifies registry class
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Suspicious use of SetThreadContext
Adds Run key to start application
Loads dropped DLL
Executes dropped EXE
Remcos
Malware Config
C2 Extraction:
databasepropersonombrecomercialideasearchwords.services:3521
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:Chrome_stealer_bin_mem
Create hunting rule
Author:James_inthe_box
Description:Chrome in files like avemaria
Rule name:INDICATOR_SUSPICIOUS_EXE_UACBypass_EventViewer
Create hunting rule
Author:ditekSHen
Description:detects Windows exceutables potentially bypassing UAC using eventvwr.exe
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:Keylog_bin_mem
Create hunting rule
Author:James_inthe_box
Description:Contains Keylog
Rule name:Parallax
Create hunting rule
Author:@bartblaze
Description:Identifies Parallax RAT.
Rule name:Remcos
Create hunting rule
Author:JPCERT/CC Incident Response Group
Description:detect Remcos in memory
Rule name:remcos_rat
Create hunting rule
Author:jeFF0Falltrades
Rule name:REMCOS_RAT_variants
Create hunting rule
Rule name:win_remcos_auto
Create hunting rule
Author:Felix Bilstein - yara-signator at cocacoding dot com
Description:autogenerated rule brought to you by yara-signator

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/138088/

Comments