MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 9cd872a2f048755fda7442e506d886474842523bab26b2fa90c4473505d49a61. 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: 9


Intelligence 9 IOCs YARA 8 File information Comments

SHA256 hash: 9cd872a2f048755fda7442e506d886474842523bab26b2fa90c4473505d49a61
SHA3-384 hash: 4533d57b2bec1da3ba903392e80713a960513198c03b54e500cf68e3d8daa03cfa287314ddbb092fc134f366dc0e9570
SHA1 hash: 716d980644517f33e77629ced6f056e4b7da8bdc
MD5 hash: 6726aa94dde6d0b66fde1b4e009b0902
humanhash: apart-black-oranges-aspen
File name:6726aa94dde6d0b66fde1b4e009b0902.exe
Download: download sample
Signature RemcosRAT
File size:401'408 bytes
First seen:2020-11-20 07:10:59 UTC
Last seen:2020-11-20 08:57:33 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'740 x AgentTesla, 19'599 x Formbook, 12'241 x SnakeKeylogger)
ssdeep 12288:2G7yg8N4qegU4/JeI5tBdLXXLcyWB6P+zg+8T:2IHhqB9Bd7XLLWB6o
Threatray 1'136 similar samples on MalwareBazaar
TLSH 288413C2029947ACDBAE3B36E421411C11B7B5C5E411F748CECCFAE53BA3F959218A76
Reporter abuse_ch
Tags:exe RAT RemcosRAT


Avatar
abuse_ch
RemcosRAT C2:
netcos.mooo.com:61514 (193.181.35.82)

Intelligence


File Origin
# of uploads :
2
# of downloads :
97
Origin country :
n/a
Vendor Threat Intelligence
Result
Verdict:
Malware
Maliciousness:

Behaviour
Sending a UDP request
Creating a window
Creating a file
Launching a process
DNS request
Sending a custom TCP request
Creating a file in the %temp% directory
Creating a process from a recently created file
Creating a process with a hidden window
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Forced shutdown of a system process
Unauthorized injection to a system process
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.
Result
Threat name:
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Signature
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
Drops PE files to the user root directory
Hides that the sample has been downloaded from the Internet (zone.identifier)
Machine Learning detection for dropped file
Machine Learning detection for sample
Malicious sample detected (through community Yara rule)
Maps a DLL or memory area into another process
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Sigma detected: Remcos
Writes to foreign memory regions
Yara detected Remcos RAT
Behaviour
Behavior Graph:
behaviorgraph top1 signatures2 2 Behavior Graph ID: 321104 Sample: U3Y2RA3qE2.exe Startdate: 20/11/2020 Architecture: WINDOWS Score: 100 30 Malicious sample detected (through community Yara rule) 2->30 32 Multi AV Scanner detection for submitted file 2->32 34 Detected Remcos RAT 2->34 36 3 other signatures 2->36 6 U3Y2RA3qE2.exe 1 3 2->6         started        10 naseo.exe 1 2->10         started        12 naseo.exe 2->12         started        process3 file4 22 C:\Users\user\naseo.exe, PE32 6->22 dropped 24 C:\Users\user\naseo.exe:Zone.Identifier, ASCII 6->24 dropped 26 C:\Users\user\AppData\...\U3Y2RA3qE2.exe.log, ASCII 6->26 dropped 38 Drops PE files to the user root directory 6->38 40 Writes to foreign memory regions 6->40 42 Maps a DLL or memory area into another process 6->42 44 Hides that the sample has been downloaded from the Internet (zone.identifier) 6->44 14 RegAsm.exe 2 6->14         started        46 Multi AV Scanner detection for dropped file 10->46 48 Machine Learning detection for dropped file 10->48 18 RegAsm.exe 10->18         started        20 RegAsm.exe 12->20         started        signatures5 process6 dnsIp7 28 netcos.mooo.com 193.181.35.82, 49717, 61514 TELIANETTeliaCarrierEU Sweden 14->28 50 Contains functionality to steal Chrome passwords or cookies 14->50 52 Contains functionality to capture and log keystrokes 14->52 54 Contains functionality to inject code into remote processes 14->54 56 Contains functionality to steal Firefox passwords or cookies 14->56 signatures8
Threat name:
ByteCode-MSIL.Trojan.Wacatac
Status:
Malicious
First seen:
2020-11-20 07:11:05 UTC
AV detection:
22 of 29 (75.86%)
Threat level:
  5/5
Result
Malware family:
Score:
  10/10
Tags:
family:remcos persistence rat
Behaviour
Suspicious behavior: MapViewOfSection
Suspicious use of WriteProcessMemory
Modifies registry class
Drops file in Windows directory
Suspicious use of SetThreadContext
Adds Run key to start application
Remcos
Malware Config
C2 Extraction:
netcos.mooo.com:61514
Unpacked files
SH256 hash:
9cd872a2f048755fda7442e506d886474842523bab26b2fa90c4473505d49a61
MD5 hash:
6726aa94dde6d0b66fde1b4e009b0902
SHA1 hash:
716d980644517f33e77629ced6f056e4b7da8bdc
SH256 hash:
62deba980942bf700d5aad89dc2e152fd39cab8b7bf81a9d28910f7c7078f221
MD5 hash:
3c643a21fbef73cd7857f159748c877c
SHA1 hash:
19b406ae0fdd37ead936ea6799cd26c46482d0b5
Detections:
win_remcos_g0 win_remcos_auto
SH256 hash:
5d99546039af35c505a7169dffa6e0015aefa81f27bb728cf64b4f5fe8ae0c05
MD5 hash:
9ef12f012567dc2f69e21edcca14e4c1
SHA1 hash:
2c17ae0864ac3c5bdd4d6e22bdd737e9b5ab8750
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
Author:abuse.ch
Rule name:Chrome_stealer_bin_mem
Author:James_inthe_box
Description:Chrome in files like avemaria
Rule name:Keylog_bin_mem
Author:James_inthe_box
Description:Contains Keylog
Rule name:Parallax
Author:@bartblaze
Description:Identifies Parallax RAT.
Rule name:Remcos
Author:JPCERT/CC Incident Response Group
Description:detect Remcos in memory
Rule name:remcos_rat
Author:jeFF0Falltrades
Rule name:REMCOS_RAT_variants
Rule name:win_remcos_auto
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.

Web download

RemcosRAT

Executable exe 9cd872a2f048755fda7442e506d886474842523bab26b2fa90c4473505d49a61

(this sample)

  
Delivery method
Distributed via web download

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