MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 5a979874ae91da8eac2f9b25898b1836ee4b50781560d83168c8ca35a061d522. 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: 13


Intelligence 13 IOCs YARA 5 File information Comments 1

SHA256 hash: 5a979874ae91da8eac2f9b25898b1836ee4b50781560d83168c8ca35a061d522
SHA3-384 hash: c4e93aaac61aff969774bbd3ff763c1e2848c468ac67363101a37a9bc2370183b42014b12f52830557e7c7b80eb861cc
SHA1 hash: 436eae7fa7378e7e9aef68f5c9cf01de612bf2c2
MD5 hash: 84b18841553b9420b8172653d2008289
humanhash: florida-bakerloo-bakerloo-jersey
File name:84b18841553b9420b8172653d2008289
Download: download sample
Signature RemcosRAT
File size:22'016 bytes
First seen:2022-06-15 19:24:18 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'747 x AgentTesla, 19'636 x Formbook, 12'244 x SnakeKeylogger)
ssdeep 384:hwE/rksv3U3bcTVfWTXlPNjeMsw4iknZm5s8sElO3B:htrk3bRXpNjp9rwUs8sSOR
Threatray 2'775 similar samples on MalwareBazaar
TLSH T1D4A209133789D27ED8BD43B29C7282011AB5BD8998F39E1D7CD6B11B2A73312059A71A
TrID 72.5% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
10.4% (.EXE) Win64 Executable (generic) (10523/12/4)
6.5% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
4.4% (.EXE) Win32 Executable (generic) (4505/5/1)
2.0% (.EXE) OS/2 Executable (generic) (2029/13)
File icon (PE):PE icon
dhash icon d0d8d0c4c4c4dcd4 (12 x RemcosRAT, 3 x NanoCore, 3 x AveMariaRAT)
Reporter zbetcheckin
Tags:32 exe RemcosRAT

Intelligence


File Origin
# of uploads :
1
# of downloads :
264
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
ID:
1
File name:
Scan002_Doc.xlsx
Verdict:
Malicious activity
Analysis date:
2022-06-15 11:42:11 UTC
Tags:
encrypted exploit CVE-2017-11882 opendir loader rat remcos keylogger

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Result
Verdict:
Suspicious
Maliciousness:

Behaviour
Searching for the window
Launching a process
Sending an HTTP GET request
Сreating synchronization primitives
DNS request
Sending a custom TCP request
Running batch commands
Creating a process with a hidden window
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
.NET source code contains potential unpacker
C2 URLs / IPs found in malware configuration
Installs a global keyboard hook
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
Tries to harvest and steal browser information (history, passwords, etc)
Yara detected AntiVM3
Yara detected Costura Assembly Loader
Yara detected Generic Downloader
Yara detected MSILDownloaderGeneric
Yara detected Remcos RAT
Behaviour
Behavior Graph:
behaviorgraph top1 signatures2 2 Behavior Graph ID: 646466 Sample: IxhTF4QoPb Startdate: 15/06/2022 Architecture: WINDOWS Score: 100 63 Malicious sample detected (through community Yara rule) 2->63 65 Multi AV Scanner detection for dropped file 2->65 67 Multi AV Scanner detection for submitted file 2->67 69 9 other signatures 2->69 7 IxhTF4QoPb.exe 16 6 2->7         started        11 adobe.exe 14 3 2->11         started        13 adobe.exe 2 2->13         started        process3 dnsIp4 49 cdn.discordapp.com 162.159.129.233, 443, 49798, 49878 CLOUDFLARENETUS United States 7->49 43 C:\Users\user\AppData\Roaming\...\adobe.exe, PE32 7->43 dropped 45 C:\Users\user\...\adobe.exe:Zone.Identifier, ASCII 7->45 dropped 47 C:\Users\user\AppData\...\IxhTF4QoPb.exe.log, ASCII 7->47 dropped 15 MSBuild.exe 3 17 7->15         started        19 cmd.exe 1 7->19         started        21 powershell.exe 15 7->21         started        23 cmd.exe 11->23         started        25 powershell.exe 14 11->25         started        51 162.159.134.233, 443, 49883 CLOUDFLARENETUS United States 13->51 53 192.168.2.1 unknown unknown 13->53 27 powershell.exe 13->27         started        file5 process6 dnsIp7 55 power22.myftp.org 45.134.173.237, 49819, 9492 CLOUDIE-AS-APCloudieLimitedHK Russian Federation 15->55 57 geoplugin.net 178.237.33.50, 49824, 80 ATOM86-ASATOM86NL Netherlands 15->57 59 Tries to harvest and steal browser information (history, passwords, etc) 15->59 61 Installs a global keyboard hook 15->61 29 conhost.exe 19->29         started        31 timeout.exe 1 19->31         started        33 conhost.exe 21->33         started        35 conhost.exe 23->35         started        37 timeout.exe 23->37         started        39 conhost.exe 25->39         started        41 conhost.exe 27->41         started        signatures8 process9
Threat name:
ByteCode-MSIL.Trojan.Woreflint
Status:
Malicious
First seen:
2022-06-15 09:19:56 UTC
File Type:
PE (.Net Exe)
Extracted files:
8
AV detection:
17 of 26 (65.38%)
Threat level:
  5/5
Result
Malware family:
Score:
  10/10
Tags:
family:remcos botnet:ejima persistence rat
Behaviour
Delays execution with timeout.exe
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
Checks computer location settings
Remcos
Malware Config
C2 Extraction:
power22.myftp.org:9492
Unpacked files
SH256 hash:
5a979874ae91da8eac2f9b25898b1836ee4b50781560d83168c8ca35a061d522
MD5 hash:
84b18841553b9420b8172653d2008289
SHA1 hash:
436eae7fa7378e7e9aef68f5c9cf01de612bf2c2
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:INDICATOR_SUSPICIOUS_EXE_DiscordURL
Author:ditekSHen
Description:Detects executables Discord URL observed in first stage droppers
Rule name:pe_imphash
Rule name:Skystars_Malware_Imphash
Author:Skystars LightDefender
Description:imphash
Rule name:SUSP_Discord_Attachments_URL
Author:SECUINFRA Falcon Team
Description:Detects a PE file that contains an Discord Attachments URL. This is often used by Malware to download further payloads
Rule name:SUSP_PE_Discord_Attachment_Oct21_1
Author:Florian Roth
Description:Detects suspicious executable with reference to a Discord attachment (often used for malware hosting on a legitimate FQDN)
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 5a979874ae91da8eac2f9b25898b1836ee4b50781560d83168c8ca35a061d522

(this sample)

  
Delivery method
Distributed via web download

Comments



Avatar
zbet commented on 2022-06-15 19:24:36 UTC

url : hxxp://193.169.255.131/bid/Ozrjcpvc.exe