MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 46b6798990aefaedd162220d0593c6b22aa72fa3afc71ad4b12d6781793a9e06. 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 YARA 2 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 46b6798990aefaedd162220d0593c6b22aa72fa3afc71ad4b12d6781793a9e06
SHA3-384 hash: 9f3fdc9b821c1e45e44b1253c71333d136c5cdd48d7600e217d1655038ae27b0aca24eb67f695d23d26998af933cf428
SHA1 hash: da909791913776122d525a46de5b78e935e62d3f
MD5 hash: 38108e43c7d71a48590efcefe16b1bd4
humanhash: cold-low-oregon-october
File name:38108e43c7d71a48590efcefe16b1bd4.exe
Download: download sample
Signature RemcosRAT
Create hunting rule
File size:866'816 bytes
First seen:2023-02-26 08:46:10 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
ssdeep 12288:K8CXIfnx1jABycx4tufgvhJUq9DTRcI9B8+EZAbVjsqrLx3dwYfGI4P/R:Jf7jU6QfeuqdTRcI9S+hbV4qp3mB
Threatray 390 similar samples on MalwareBazaar
TLSH T1400512179E66C196C4150AB7BEFB7F112B1086BA99E7620601CFFCB0674B74A3C095EC
TrID 56.5% (.EXE) Win64 Executable (generic) (10523/12/4)
11.0% (.ICL) Windows Icons Library (generic) (2059/9)
10.9% (.EXE) OS/2 Executable (generic) (2029/13)
10.7% (.EXE) Generic Win/DOS Executable (2002/3)
10.7% (.EXE) DOS Executable Generic (2000/1)
Reporter abuse_ch
Tags:exe RAT RemcosRAT

Intelligence

File Origin
# of uploads :
1
# of downloads :
242
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
38108e43c7d71a48590efcefe16b1bd4.exe
Verdict:
Malicious activity
Analysis date:
2023-02-26 08:47:18 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/4db0fa1f-ad96-44af-89c9-c610d571f2b2

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/369793/
Detection(s):
Win.Trojan.EmbeddedDotNetBinary-9940868-0
Create hunting rule

Win.Trojan.EmbeddedReversedDLL-9940922-0
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Сreating synchronization primitives
Launching a process
Creating a process with a hidden window
Sending a custom TCP request
Creating a file in the %AppData% subdirectories
Unauthorized injection to a recently created process
Creating a file
Creating a file in the %AppData% directory
Using the Windows Management Instrumentation requests
DNS request
Creating a window
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
packed
Link:
https://www.filescan.io/uploads/63fb1c87589e1e4c5bd91d85/reports/b4ae56d0-0c14-4be1-b3b6-fdad0176c240/overview
Verdict:
Malicious
Labled as:
Trojan.Mardom.MN.Generic
Link:
https://www.hybrid-analysis.com/sample/46b6798990aefaedd162220d0593c6b22aa72fa3afc71ad4b12d6781793a9e06
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.
Verdict:
Unknown
Link:
https://analyze.intezer.com/analyses/ce172e0a-1699-4d1c-bd54-945da2cd31fa
Result
Threat name:
Unknown
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1182557
Signature
Creates multiple autostart registry keys
Encrypted powershell cmdline option found
Injects a PE file into a foreign processes
Machine Learning detection for dropped file
Machine Learning detection for sample
Modifies the context of a thread in another process (thread injection)
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Queries sensitive BIOS Information (via WMI, Win32_Bios & Win32_BaseBoard, often done to detect virtual machines)
Queries sensitive disk information (via WMI, Win32_DiskDrive, often done to detect virtual machines)
Uses dynamic DNS services
Yara detected Costura Assembly Loader
Yara detected Generic Downloader
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 815388 Sample: RvwVnzQTRj.exe Startdate: 26/02/2023 Architecture: WINDOWS Score: 100 44 Multi AV Scanner detection for submitted file 2->44 46 Machine Learning detection for sample 2->46 48 Uses dynamic DNS services 2->48 50 2 other signatures 2->50 7 RvwVnzQTRj.exe 1 7 2->7         started        11 Gevokbsybda.exe 3 2->11         started        13 RvwVnzQTRj.exe 2 2->13         started        15 2 other processes 2->15 process3 file4 34 C:\Users\user\AppData\...behaviorgraphevokbsybda.exe, PE32+ 7->34 dropped 36 C:\Users\...behaviorgraphevokbsybda.exe:Zone.Identifier, ASCII 7->36 dropped 38 C:\Users\user\AppData\...\RvwVnzQTRj.exe.log, CSV 7->38 dropped 54 Queries sensitive disk information (via WMI, Win32_DiskDrive, often done to detect virtual machines) 7->54 56 Queries sensitive BIOS Information (via WMI, Win32_Bios & Win32_BaseBoard, often done to detect virtual machines) 7->56 58 Encrypted powershell cmdline option found 7->58 64 3 other signatures 7->64 17 RvwVnzQTRj.exe 2 4 7->17         started        22 powershell.exe 16 7->22         started        60 Multi AV Scanner detection for dropped file 11->60 62 Machine Learning detection for dropped file 11->62 24 powershell.exe 11->24         started        signatures5 process6 dnsIp7 40 xiaoxiaojue.duckdns.org 212.87.204.245, 49698, 49699, 49700 GEMENIIGEMENIINETWORKRO Germany 17->40 42 192.168.2.1 unknown unknown 17->42 32 C:\Users\user\AppData\...\RvwVnzQTRj.exe, PE32+ 17->32 dropped 52 Creates multiple autostart registry keys 17->52 26 RvwVnzQTRj.exe 2 17->26         started        28 conhost.exe 22->28         started        30 conhost.exe 24->30         started        file8 signatures9 process10
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/46b6798990aefaedd162220d0593c6b22aa72fa3afc71ad4b12d6781793a9e06/
Threat name:
ByteCode-MSIL.Downloader.Seraph
Create hunting rule
Status:
Malicious
First seen:
2023-02-26 08:47:07 UTC
File Type:
PE+ (.Net Exe)
Extracted files:
3
AV detection:
17 of 25 (68.00%)
Threat level:
  3/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=i23htcmqv35o3ulceigqle6gwivkol5dv7drvvfrfvtyc6j2tyda._file
Verdict:
malicious
Similar samples:
0fe833966ffd7dc6723991d4b4561f039f488ce774de7c5c6b6f9ad7a006b595
RemcosRAT
26a8b57607f6d28a0b3df01b474a8ff516077e40af6db5466965335eb06913e9
RemcosRAT
320c842b7668314d60fe11232d050805503a1df1c8c40005efa1759aeecdadab
RemcosRAT
922a4c143d4517afbd2a8254776283a2b8982a6ed6950a0024ca86357db1eab8
RemcosRAT
ca4033db02bded2739ca4e31c72910e4c5995f9437cda0c4767a8113166d84b6
RemcosRAT
e572737c54f4ba8052c61929a056b2825a24628d825964890c4287e053e7db07
RemcosRAT
f99cf4e79efb37bea41405c5701f8ce7f86dea17a05b0c89f8f775c28458b214
RemcosRAT
ffe2e43e59074cf27875cc31e8be84503b1a6854dd3f2480b5aff7b6b220a416
RemcosRAT
+ 380 additional samples on MalwareBazaar
Result
Malware family:
n/a
Score:
  7/10
Tags:
persistence
Link:
https://tria.ge/reports/230226-kpv6eagd74/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Program crash
Suspicious use of SetThreadContext
Adds Run key to start application
Checks computer location settings
Unpacked files
SH256 hash:
46b6798990aefaedd162220d0593c6b22aa72fa3afc71ad4b12d6781793a9e06
MD5 hash:
38108e43c7d71a48590efcefe16b1bd4
SHA1 hash:
da909791913776122d525a46de5b78e935e62d3f
Link:
https://www.unpac.me/results/f5a5ad1a-2f1b-4c20-b8a9-9f5ddf42bf2c/
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Remcos
Score:
0.90
Link:
https://yomi.yoroi.company/submissions/46b6798990aefaedd162220d0593c6b22aa72fa3afc71ad4b12d6781793a9e06

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:Typical_Malware_String_Transforms
Create hunting rule
Author:Florian Roth (Nextron Systems)
Description:Detects typical strings in a reversed or otherwise modified form
Reference:Internal Research
Rule name:Typical_Malware_String_Transforms_RID3473
Create hunting rule
Author:Florian Roth
Description:Detects typical strings in a reversed or otherwise modified form
Reference:Internal Research

File information

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

Web download

RemcosRAT

Executable exe 46b6798990aefaedd162220d0593c6b22aa72fa3afc71ad4b12d6781793a9e06

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/2550930/
  
Delivery method
Distributed via web download
Cape
Cape
https://www.capesandbox.com/analysis/369793/

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