MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 9b0bc9cfbb7f7206d7c6578b2c6b618654c455e4e9d0c2926441c89627cb7b8a. 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: 12


Intelligence 12 IOCs YARA 11 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 9b0bc9cfbb7f7206d7c6578b2c6b618654c455e4e9d0c2926441c89627cb7b8a
SHA3-384 hash: f2ae301f2155006914bb2ba1049cadcf803879f167d1a3239bfe47468cff1528c8536e87896c3317522e151309f0830d
SHA1 hash: 0468f637ae7037205cf885dfe0812e8909f59ee4
MD5 hash: adb28c624b0e2f4cd6a7e16ab37a7c30
humanhash: chicken-july-fix-iowa
File name:CMC1505026AA_Factura_C123580_20210304.pdf.exe
Download: download sample
Signature RemcosRAT
Create hunting rule
File size:602'624 bytes
First seen:2021-03-05 13:06:57 UTC
Last seen:2021-03-05 15:20:17 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'666 x AgentTesla, 19'479 x Formbook, 12'208 x SnakeKeylogger)
ssdeep 12288:3oP8teodM4fNDVbUs2yxgq8XTGGzjXWLQ5gvOwYXTLFbT:kXTDjXYQlXPd
Threatray 1'630 similar samples on MalwareBazaar
TLSH 3FD4C5E9C44E50EDD4B2BBF13BA55C1C93567E116A1AB01A14407D933FFF9A2BB83812
Reporter abuse_ch
Tags:exe RAT RemcosRAT


Avatar
abuse_ch
Malspam distributing RemcosRAT:

HELO: slot0.cliveit.com
Sending IP: 194.31.96.114
From: Ms. Transmanche <postmaster@cliveit.com>
Reply-To: Ms. Transmanche <marketing.jnautomation.in@gmail.com>
Subject: March Shipment
Attachment: CMC1505026AA_Factura_C123580_20210304.pdf.zip (contains "CMC1505026AA_Factura_C123580_20210304.pdf.exe")

RemcosRAT C2:
greenfieldsde.duckdns.org

Intelligence

File Origin
# of uploads :
2
# of downloads :
155
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
CMC1505026AA_Factura_C123580_20210304.pdf.exe
Verdict:
Malicious activity
Analysis date:
2021-03-05 13:31:00 UTC
Tags:
rat remcos keylogger
Link:
https://app.any.run/tasks/ef6061c5-ae61-4745-aa8b-01cdc9b71ad3

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/122466/
Detection(s):
SecuriteInfo.com.W32.MSIL_Kryptik.DJW.genEldorado.26017.15164.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Sending a UDP request
Creating a file
Creating a file in the %AppData% subdirectories
Creating a file in the %temp% directory
Creating a process from a recently created file
Creating a process with a hidden window
Deleting a recently created file
Running batch commands
Unauthorized injection to a recently created process
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
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/629842
Signature
.NET source code contains very large strings
Allocates memory in foreign processes
Binary contains a suspicious time stamp
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
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
Multi AV Scanner detection for submitted file
Sigma detected: Remcos
Sigma detected: Suspicious Double Extension
Sigma detected: Suspicious Svchost Process
Uses an obfuscated file name to hide its real file extension (double extension)
Uses dynamic DNS services
Writes to foreign memory regions
Yara detected Remcos RAT
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 363896 Sample: CMC1505026AA_Factura_C12358... Startdate: 05/03/2021 Architecture: WINDOWS Score: 100 61 sdegreenfieldsdeeenf.duckdns.org 2->61 63 greenfieldsde.duckdns.org 2->63 65 fieldsdegreenf.duckdns.org 2->65 83 Found malware configuration 2->83 85 Malicious sample detected (through community Yara rule) 2->85 87 Multi AV Scanner detection for submitted file 2->87 89 12 other signatures 2->89 14 CMC1505026AA_Factura_C123580_20210304.pdf.exe 3 2->14         started        18 svchosts.exe 2 2->18         started        20 svchosts.exe 2 2->20         started        signatures3 process4 file5 59 CMC1505026AA_Factu...0210304.pdf.exe.log, ASCII 14->59 dropped 103 Contains functionality to steal Chrome passwords or cookies 14->103 105 Contains functionality to capture and log keystrokes 14->105 107 Contains functionality to inject code into remote processes 14->107 109 Contains functionality to steal Firefox passwords or cookies 14->109 22 CMC1505026AA_Factura_C123580_20210304.pdf.exe 4 5 14->22         started        25 CMC1505026AA_Factura_C123580_20210304.pdf.exe 14->25         started        111 Injects a PE file into a foreign processes 18->111 27 svchosts.exe 18->27         started        29 svchosts.exe 20->29         started        signatures6 process7 file8 55 C:\Users\user\AppData\...\svchosts.exe, PE32 22->55 dropped 57 C:\Users\...\svchosts.exe:Zone.Identifier, ASCII 22->57 dropped 31 wscript.exe 1 22->31         started        process9 process10 33 cmd.exe 1 31->33         started        process11 35 svchosts.exe 3 33->35         started        38 conhost.exe 33->38         started        signatures12 91 Multi AV Scanner detection for dropped file 35->91 93 Machine Learning detection for dropped file 35->93 95 Injects a PE file into a foreign processes 35->95 40 svchosts.exe 4 3 35->40         started        process13 dnsIp14 77 greenfieldsde.duckdns.org 151.235.181.78, 6553 TCIIR Iran (ISLAMIC Republic Of) 40->77 79 sdegreenfieldsdeeenf.duckdns.org 40->79 81 fieldsdegreenf.duckdns.org 40->81 97 Writes to foreign memory regions 40->97 99 Allocates memory in foreign processes 40->99 101 Injects a PE file into a foreign processes 40->101 44 svchost.exe 40->44         started        signatures15 process16 process17 46 iexplore.exe 44->46         started        48 iexplore.exe 44->48         started        process18 50 iexplore.exe 46->50         started        53 iexplore.exe 46->53         started        dnsIp19 67 github.com 140.82.121.4, 443, 49746, 49747 GITHUBUS United States 50->67 69 avatars.githubusercontent.com 185.199.108.133, 443, 49752, 49753 FASTLYUS Netherlands 50->69 71 consentdeliveryfd.azurefd.net 50->71 73 140.82.121.3, 443, 49762, 49763 GITHUBUS United States 53->73 75 192.168.2.1 unknown unknown 53->75
Detection:
remcos
Create hunting rule
Link:
https://mwdb.cert.pl/sample/9b0bc9cfbb7f7206d7c6578b2c6b618654c455e4e9d0c2926441c89627cb7b8a/
Threat name:
ByteCode-MSIL.Ransomware.TeslaCrypt
Create hunting rule
Status:
Malicious
First seen:
2021-03-05 13:07:09 UTC
AV detection:
21 of 28 (75.00%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=tmf4tt53p5zanv6gk6fsy23bqzkmivpe5himfeteihejmj6lpofa._file
Verdict:
malicious
Label(s):
remcos
Create hunting rule
Similar samples:
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RemcosRAT
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61d9f4cbc76b7889d7d17d262b63c0fd2ee40642653063b1eb6ab84397f8c57b
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82027bdaf86e2d0da1c45ede5efd820a1cbaace1b1b8f7675b8115d82db75f26
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d34e588c8bef9cef39708c52f7f372bcd4b5fc39e4eaf0b9193aa586a10d7cc2
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dfd3c33bf7be405cea03a045f3df2d9ff35f04c7da918eb916b6f224a58eea1f
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e26c95b32b64e3f7b5d72d52be2fd7cb52c7a2c1df25f5337a783a1735f806ad
RemcosRAT
+ 1'620 additional samples on MalwareBazaar
Result
Malware family:
remcos
Create hunting rule
Score:
  10/10
Tags:
family:remcos persistence rat
Link:
https://tria.ge/reports/210305-smcfvt9edn/
Behaviour
Modifies registry class
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
Suspicious use of AdjustPrivilegeToken
Suspicious use of FindShellTrayWindow
Suspicious use of SendNotifyMessage
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:
greenfieldsde.duckdns.org:6553
fieldsdegreenf.duckdns.org:6553
sdegreenfieldsdeeenf.duckdns.org:6553
Unpacked files
SH256 hash:
3f12f3b83c12917fef2ae91423734eec0c344b75f2625aa3ab36962cd9d5ba49
MD5 hash:
0fc874cf95b26311f1252a9bf0e3308b
SHA1 hash:
98a9c861561d1bd7ced1486c52bf3d96921323b5
Detections:
win_remcos_g0
Create hunting rule
win_remcos_auto
Create hunting rule
Link:
https://www.unpac.me/results/cc41d1fd-d0c6-4ac2-871e-9ecf9d6700a0/
SH256 hash:
a772c4e2f51a53c621d926c2d444d3c1a087a68297034072b06aadd0789e3618
MD5 hash:
69c2df3598d88c74ae585d9885829e39
SHA1 hash:
776ee8f25366e16c8869defc447b340750221bac
Link:
https://www.unpac.me/results/cc41d1fd-d0c6-4ac2-871e-9ecf9d6700a0/
SH256 hash:
f8b5b51efedb3e87493ac2439473564603cc3059d57956f209a7310e311a1027
MD5 hash:
d66f89bf838fb52ed59d311a99aea214
SHA1 hash:
342525c4aabbb92abf51459081d34ed0f1cdc965
Link:
https://www.unpac.me/results/cc41d1fd-d0c6-4ac2-871e-9ecf9d6700a0/
SH256 hash:
9b0bc9cfbb7f7206d7c6578b2c6b618654c455e4e9d0c2926441c89627cb7b8a
MD5 hash:
adb28c624b0e2f4cd6a7e16ab37a7c30
SHA1 hash:
0468f637ae7037205cf885dfe0812e8909f59ee4
Link:
https://www.unpac.me/results/cc41d1fd-d0c6-4ac2-871e-9ecf9d6700a0/
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Malicious File
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/9b0bc9cfbb7f7206d7c6578b2c6b618654c455e4e9d0c2926441c89627cb7b8a

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:SUSP_Modified_SystemExeFileName_in_File
Create hunting rule
Author:Florian Roth
Description:Detecst a variant of a system file name often used by attackers to cloak their activity
Reference:https://www.symantec.com/blogs/threat-intelligence/seedworm-espionage-group
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.

Malspam

RemcosRAT

zip de63cdcb87487876c1eea7b77b9dad4723b0aa02edf0b6316c644d6762ec6c7a

RemcosRAT

Executable exe 9b0bc9cfbb7f7206d7c6578b2c6b618654c455e4e9d0c2926441c89627cb7b8a

(this sample)

  
Dropped by
MD5 6582fef673551f9ebcf3db2ed682bb50
  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/122466/
  
Dropped by
SHA256 de63cdcb87487876c1eea7b77b9dad4723b0aa02edf0b6316c644d6762ec6c7a

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