MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 fb0bca54f6a5b8aec9ae002bf53a942792fff4dc92ca4ecbd74fb625c1d604e0. 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: 16


Intelligence 16 IOCs YARA 9 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: fb0bca54f6a5b8aec9ae002bf53a942792fff4dc92ca4ecbd74fb625c1d604e0
SHA3-384 hash: 4a09d9163f418613f52e63fe50d7bd7f76d0210cdcaf752068fc6a7cce5958994a2ceae4ad19da685f760b560cd779b9
SHA1 hash: 75f2d8c812568fc5f1b7ea3ef2396feadfd151eb
MD5 hash: 0e3c481a760c2f8a2bb17a53c997b7aa
humanhash: comet-december-neptune-wisconsin
File name:DOCUMENTO DE CONFIRMACION DE PSE_cln.exe
Download: download sample
Signature RemcosRAT
Create hunting rule
File size:806'912 bytes
First seen:2023-01-11 20:17:39 UTC
Last seen:2023-01-11 21:28:10 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'652 x AgentTesla, 19'463 x Formbook, 12'204 x SnakeKeylogger)
ssdeep 12288:PPfJbrevVrdrPSxdz68wxQbuxlIaUqDIoKehdBgKqroMrZr5ACu:3xeJdrgYdUqUxkyZrr5AC
TLSH T12B057DEE16E520ABD1180AB19855AFD06670EC79BB52C709BD44FCCE6E723E540332E7
TrID 67.7% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
9.7% (.EXE) Win64 Executable (generic) (10523/12/4)
6.0% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
4.6% (.EXE) Win16 NE executable (generic) (5038/12/1)
4.1% (.EXE) Win32 Executable (generic) (4505/5/1)
File icon (PE):PE icon
dhash icon c4bada9ae8cca4c8 (13 x Formbook, 6 x AgentTesla, 5 x AveMariaRAT)
Reporter 0xToxin
Tags:exe RemcosRAT

Intelligence

File Origin
# of uploads :
2
# of downloads :
199
Origin country :
IL IL
Vendor Threat Intelligence
Malware family:
remcos
Create hunting rule
ID:
1
File name:
DOCUMENTO DE CONFIRMACION DE PSE_cln.exe
Verdict:
Malicious activity
Analysis date:
2023-01-11 20:19:39 UTC
Tags:
rat remcos keylogger
Link:
https://app.any.run/tasks/ffa7f5cb-25a0-4a36-8494-577edf882ee8

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/352058/
Detection(s):
SecuriteInfo.com.Trojan.PackedNET.1032.23688.32355.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Launching a process
Running batch commands
Creating a file
Searching for synchronization primitives
Creating a file in the %AppData% subdirectories
Launching the default Windows debugger (dwwin.exe)
Sending a custom TCP request
Creating a process from a recently created file
Unauthorized injection to a system process
Enabling autorun by creating a file
Verdict:
No Threat
Threat level:
  2/10
Confidence:
100%
Tags:
anti-debug anti-vm hacktool obfuscated packed
Link:
https://www.filescan.io/uploads/63bf197aa70bef46551eec4d/reports/17c6dddb-d782-4f32-9526-a4c6628d1558/overview
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.
Malware family:
REMCOS
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/7785de14-bcbb-45ce-83fd-0ddaff52d0a0
Result
Threat name:
Remcos
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1149890
Signature
Allocates memory in foreign processes
C2 URLs / IPs found in malware configuration
Icon mismatch, binary includes an icon from a different legit application in order to fool users
Initial sample is a PE file and has a suspicious name
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
Uses schtasks.exe or at.exe to add and modify task schedules
Writes to foreign memory regions
Yara detected Remcos RAT
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 782622 Sample: DOCUMENTO DE CONFIRMACION D... Startdate: 11/01/2023 Architecture: WINDOWS Score: 100 62 Malicious sample detected (through community Yara rule) 2->62 64 Icon mismatch, binary includes an icon from a different legit application in order to fool users 2->64 66 Yara detected Remcos RAT 2->66 68 3 other signatures 2->68 7 DOCUMENTO DE CONFIRMACION DE  PSE_cln.exe 4 2->7         started        11 stles.exe 3 2->11         started        13 stles.exe 2 2->13         started        process3 file4 54 DOCUMENTO DE CONFI...DE  PSE_cln.exe.log, ASCII 7->54 dropped 72 Writes to foreign memory regions 7->72 74 Allocates memory in foreign processes 7->74 76 Injects a PE file into a foreign processes 7->76 15 cmd.exe 3 7->15         started        18 cmd.exe 2 7->18         started        21 cmd.exe 1 7->21         started        23 csc.exe 7->23         started        78 Multi AV Scanner detection for dropped file 11->78 80 Machine Learning detection for dropped file 11->80 25 cmd.exe 11->25         started        27 cmd.exe 1 11->27         started        31 2 other processes 11->31 29 cmd.exe 13->29         started        33 3 other processes 13->33 signatures5 process6 file7 56 C:\Users\user\AppData\Roaming\...\stles.exe, PE32 15->56 dropped 58 C:\Users\user\...\stles.exe:Zone.Identifier, ASCII 15->58 dropped 35 conhost.exe 15->35         started        70 Uses schtasks.exe or at.exe to add and modify task schedules 18->70 37 conhost.exe 18->37         started        44 2 other processes 21->44 39 WerFault.exe 24 9 23->39         started        46 2 other processes 25->46 42 conhost.exe 27->42         started        48 2 other processes 29->48 50 2 other processes 31->50 52 3 other processes 33->52 signatures8 process9 dnsIp10 60 192.168.2.1 unknown unknown 39->60
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/fb0bca54f6a5b8aec9ae002bf53a942792fff4dc92ca4ecbd74fb625c1d604e0/
Threat name:
ByteCode-MSIL.Backdoor.Remcos
Create hunting rule
Status:
Malicious
First seen:
2023-01-11 20:18:08 UTC
File Type:
PE (.Net Exe)
Extracted files:
29
AV detection:
18 of 26 (69.23%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=7mf4uvhwuw4k5snoaav7kouue6jp75g4slfe5s6xj63clqowatqa._file
Verdict:
malicious
Label(s):
remcos
Create hunting rule
Result
Malware family:
remcos
Create hunting rule
Score:
  10/10
Tags:
family:remcos botnet:remotehost rat
Link:
https://tria.ge/reports/230111-y29ffsec24/
Behaviour
Creates scheduled task(s)
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Program crash
Drops file in Windows directory
Suspicious use of SetThreadContext
Executes dropped EXE
Remcos
Malware Config
C2 Extraction:
voeurhfvjsdvsd.con-ip.com:1883
Verdict:
Malicious
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/5240ea26-cdbf-4c9e-9539-78845d04b0d6
Unpacked files
SH256 hash:
c3b457835d275463af933f9c66ac484531f2efa9a1a8ce423d986021ff2ec279
MD5 hash:
52b7084a2e1aee97cb496a954abff0c2
SHA1 hash:
96107f02639365e9b1009ac93f4aae2083e0d144
Detections:
Remcos
Create hunting rule
win_remcos_auto
Create hunting rule
Link:
https://www.unpac.me/results/19eadeaf-24a3-4e78-92c3-bd8520cf3d1a/
SH256 hash:
fb0bca54f6a5b8aec9ae002bf53a942792fff4dc92ca4ecbd74fb625c1d604e0
MD5 hash:
0e3c481a760c2f8a2bb17a53c997b7aa
SHA1 hash:
75f2d8c812568fc5f1b7ea3ef2396feadfd151eb
Link:
https://www.unpac.me/results/19eadeaf-24a3-4e78-92c3-bd8520cf3d1a/
Malware family:
Remcos
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/fb0bca54f6a5/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
iSpy Keylogger
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/fb0bca54f6a5b8aec9ae002bf53a942792fff4dc92ca4ecbd74fb625c1d604e0

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:iexplorer_remcos
Create hunting rule
Author:iam-py-test
Description:Detect iexplorer being taken over by Remcos
Rule name:INDICATOR_EXE_Packed_SmartAssembly
Create hunting rule
Author:ditekSHen
Description:Detects executables packed with SmartAssembly
Rule name:INDICATOR_SUSPICIOUS_EXE_UACBypass_EventViewer
Create hunting rule
Author:ditekSHen
Description:detects Windows exceutables potentially bypassing UAC using eventvwr.exe
Rule name:pe_imphash
Create hunting rule
Rule name:Remcos
Create hunting rule
Author:kevoreilly
Description:Remcos Payload
Rule name:REMCOS_RAT_variants
Create hunting rule
Rule name:Skystars_Malware_Imphash
Create hunting rule
Author:Skystars LightDefender
Description:imphash
Rule name:Windows_Trojan_Remcos_b296e965
Create hunting rule
Author:Elastic Security
Rule name:win_remcos_auto
Create hunting rule
Author:Felix Bilstein - yara-signator at cocacoding dot com
Description:Detects win.remcos.

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/352058/

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