MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 13a780d9b9243d3fea7a8f28655b9c3cc752e39fa7ade991ef73e4f89e7b6c26. 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: 18


Intelligence 18 IOCs YARA 4 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 13a780d9b9243d3fea7a8f28655b9c3cc752e39fa7ade991ef73e4f89e7b6c26
SHA3-384 hash: b505a1bb9a77ece3c055510df1dab8a060614b73c1608dfcbc6aae2cc9b67a71bfae5f1be1f1571c962d30d70851beb7
SHA1 hash: ff18a1f60a255d63bd2a6f7e927bf7341bb1bb02
MD5 hash: 873fb22d93c231e49477c051c6438c28
humanhash: king-oven-nine-dakota
File name:873fb22d93c231e49477c051c6438c28.exe
Download: download sample
Signature RemcosRAT
Create hunting rule
File size:1'316'864 bytes
First seen:2024-04-28 09:15:40 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'666 x AgentTesla, 19'479 x Formbook, 12'209 x SnakeKeylogger)
ssdeep 24576:kaXk+nGvZEePw/+xKgVV3PgirOpaGL5i9AO/JV8m0R:r/GjZBFP1Gk/8b
TLSH T12C55143C18BD1A3B9175C2A9CFE88567F0409C7B3911AD6A94D3B3958376A9339C313E
TrID 71.1% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
10.2% (.EXE) Win64 Executable (generic) (10523/12/4)
6.3% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
4.3% (.EXE) Win32 Executable (generic) (4504/4/1)
2.0% (.ICL) Windows Icons Library (generic) (2059/9)
File icon (PE):PE icon
dhash icon 2106071b130b8f07 (1 x RemcosRAT)
Reporter abuse_ch
Tags:exe RemcosRAT

Intelligence

File Origin
# of uploads :
1
# of downloads :
326
Origin country :
NL NL
Vendor Threat Intelligence
Malware family:
remcos
Create hunting rule
ID:
1
File name:
13a780d9b9243d3fea7a8f28655b9c3cc752e39fa7ade991ef73e4f89e7b6c26.exe
Verdict:
Malicious activity
Analysis date:
2024-04-28 09:30:04 UTC
Tags:
rat remcos remote evasion stealer
Link:
https://app.any.run/tasks/fc3242b1-85a8-4374-9c30-c1a133309c6e

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

Behaviour
Creating a window
Unauthorized injection to a recently created process
Restart of the analyzed sample
Creating a file
Сreating synchronization primitives
Connection attempt
Sending a custom TCP request
DNS request
Sending an HTTP GET request
Reading critical registry keys
Creating a file in the %temp% directory
Stealing user critical data
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
packed remcos
Link:
https://www.filescan.io/uploads/662e13d454bafb7d21e362c6/reports/90a30064-8903-444c-84ca-88787cac4daf/overview
Verdict:
Malicious
Labled as:
Variadic.A.242.Generic
Link:
https://www.hybrid-analysis.com/sample/13a780d9b9243d3fea7a8f28655b9c3cc752e39fa7ade991ef73e4f89e7b6c26
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.
Malware family:
Agent Tesla
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/4ba00470-7d58-4b72-8a8a-d75326bfb15c
Result
Threat name:
Remcos
Create hunting rule
Detection:
malicious
Classification:
rans.phis.troj.spyw.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1432832
Signature
.NET source code contains potential unpacker
.NET source code contains very large array initializations
.NET source code contains very large strings
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Contains functionality to bypass UAC (CMSTPLUA)
Contains functionality to inject code into remote processes
Contains functionality to register a low level keyboard hook
Contains functionality to steal Chrome passwords or cookies
Contains functionality to steal Firefox passwords or cookies
Contains functionalty to change the wallpaper
Delayed program exit found
Detected Remcos RAT
Found malware configuration
Injects a PE file into a foreign processes
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 submitted file
Sigma detected: Remcos
Tries to harvest and steal browser information (history, passwords, etc)
Tries to steal Instant Messenger accounts or passwords
Tries to steal Mail credentials (via file / registry access)
Tries to steal Mail credentials (via file registry)
Yara detected Remcos RAT
Yara detected UAC Bypass using CMSTP
Yara detected WebBrowserPassView password recovery tool
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1432832 Sample: 8sRXyhcuzs.exe Startdate: 28/04/2024 Architecture: WINDOWS Score: 100 43 geoplugin.net 2->43 55 Found malware configuration 2->55 57 Malicious sample detected (through community Yara rule) 2->57 59 Antivirus detection for URL or domain 2->59 61 10 other signatures 2->61 8 8sRXyhcuzs.exe 3 2->8         started        11 chrome.exe 1 2->11         started        14 chrome.exe 2->14         started        signatures3 process4 dnsIp5 63 Contains functionality to bypass UAC (CMSTPLUA) 8->63 65 Tries to steal Mail credentials (via file registry) 8->65 67 Contains functionalty to change the wallpaper 8->67 69 6 other signatures 8->69 16 8sRXyhcuzs.exe 3 13 8->16         started        20 8sRXyhcuzs.exe 8->20         started        45 192.168.2.4, 138, 2404, 443 unknown unknown 11->45 47 192.168.2.5 unknown unknown 11->47 49 239.255.255.250 unknown Reserved 11->49 22 chrome.exe 11->22         started        24 chrome.exe 14->24         started        signatures6 process7 dnsIp8 33 64.188.22.11, 2404, 49730, 49731 ASN-QUADRANET-GLOBALUS United States 16->33 35 geoplugin.net 178.237.33.50, 49732, 80 ATOM86-ASATOM86NL Netherlands 16->35 51 Detected Remcos RAT 16->51 53 Maps a DLL or memory area into another process 16->53 26 8sRXyhcuzs.exe 1 16->26         started        29 8sRXyhcuzs.exe 1 16->29         started        31 8sRXyhcuzs.exe 16 16->31         started        37 142.251.111.106, 443, 49775 GOOGLEUS United States 22->37 39 www.google.com 172.253.63.103, 443, 49737, 49738 GOOGLEUS United States 22->39 41 7 other IPs or domains 22->41 signatures9 process10 signatures11 71 Tries to steal Instant Messenger accounts or passwords 26->71 73 Tries to harvest and steal browser information (history, passwords, etc) 26->73 75 Tries to steal Mail credentials (via file / registry access) 29->75
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/13a780d9b9243d3fea7a8f28655b9c3cc752e39fa7ade991ef73e4f89e7b6c26
Detection:
remcos
Create hunting rule
Link:
https://mwdb.cert.pl/sample/13a780d9b9243d3fea7a8f28655b9c3cc752e39fa7ade991ef73e4f89e7b6c26/
Threat name:
ByteCode-MSIL.Backdoor.Remcos
Create hunting rule
Status:
Malicious
First seen:
2024-04-20 13:03:00 UTC
File Type:
PE (.Net Exe)
Extracted files:
17
AV detection:
23 of 24 (95.83%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=cotybwnzeq6t72t2r4ugkw44htdvfy47u6w6teppopsprht3nqta._file
Verdict:
malicious
Label(s):
remcos
Create hunting rule
Result
Malware family:
remcos
Create hunting rule
Score:
  10/10
Tags:
family:remcos botnet:remotehost collection rat spyware stealer
Link:
https://tria.ge/reports/240428-k8fj3acf7w/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Suspicious use of SetThreadContext
Accesses Microsoft Outlook accounts
Reads user/profile data of web browsers
NirSoft MailPassView
NirSoft WebBrowserPassView
Nirsoft
Remcos
Malware Config
C2 Extraction:
64.188.22.11:2404
Unpacked files
SH256 hash:
1c633f39a192f108f755e0bcf412e8489ad80781f3b7807c80892deb2526ff0d
MD5 hash:
e4b5d57e9e46a4e76075b5b92f71577f
SHA1 hash:
d76dc165724148193c6911cc75fc62c198737d3a
Link:
https://www.unpac.me/results/079c3a3a-c213-4409-8afe-7c426084e99f/
Parent samples :
d89ea6a01347b82f963ed7960583e5d76c6a07e91852fae83bc290e0f64a06b2
3f700fd41c6cca501d50cc2f62afd8e0d951efc1a918aa65ab3e84ee563ff1d6
26a36920e7a463398a4251828ec02fd965ad1d782f819b0c04904706efb083be
SH256 hash:
155986be37748ad6902740985d3fc468df01b02e92d67b04cad7be6ec50faebf
MD5 hash:
3f28c3f4dd157e497fe9f9edd2790ba2
SHA1 hash:
9af10afdd3e0c7ad0ad508a673f2cab5ebc238b8
Link:
https://www.unpac.me/results/079c3a3a-c213-4409-8afe-7c426084e99f/
SH256 hash:
37a80efe1657b69826b89b208f95c747c02064ca2221930e5d32b8d65293d9c1
MD5 hash:
2914b63644a6d2ca84e10f9641c38c17
SHA1 hash:
9a262791230131e75d27864b3288de895d64f5d6
Detections:
Remcos
Create hunting rule
win_remcos_w0
Create hunting rule
win_remcos_auto
Create hunting rule
malware_windows_remcos_rat
Create hunting rule
INDICATOR_SUSPICIOUS_EXE_UACBypass_CMSTPCOM
Create hunting rule
Link:
https://www.unpac.me/results/079c3a3a-c213-4409-8afe-7c426084e99f/
SH256 hash:
baa0bda022a64970c5be7e975198d5dd8229901e827b2bda8ed277c53e9fb950
MD5 hash:
1efe8c9276f935bf051c72a80a02d2c8
SHA1 hash:
13a1f62d3ad9375ca328ce8e393e4e235226bc3c
Link:
https://www.unpac.me/results/079c3a3a-c213-4409-8afe-7c426084e99f/
SH256 hash:
13a780d9b9243d3fea7a8f28655b9c3cc752e39fa7ade991ef73e4f89e7b6c26
MD5 hash:
873fb22d93c231e49477c051c6438c28
SHA1 hash:
ff18a1f60a255d63bd2a6f7e927bf7341bb1bb02
Link:
https://www.unpac.me/results/079c3a3a-c213-4409-8afe-7c426084e99f/
Malware family:
Remcos
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/13a780d9b924/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Malicious File
Score:
0.99
Link:
https://yomi.yoroi.company/submissions/13a780d9b9243d3fea7a8f28655b9c3cc752e39fa7ade991ef73e4f89e7b6c26

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:AgentTesla_DIFF_Common_Strings_01
Create hunting rule
Author:schmidtsz
Description:Identify partial Agent Tesla strings
Rule name:NET
Create hunting rule
Author:malware-lu
Rule name:pe_imphash
Create hunting rule
Rule name:Skystars_Malware_Imphash
Create hunting rule
Author:Skystars LightDefender
Description:imphash

File information

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

BLint

The following table provides more information about this file using BLint. BLint is a Binary Linter to check the security properties, and capabilities in executables.

Findings
IDTitleSeverity
CHECK_AUTHENTICODEMissing Authenticodehigh
CHECK_DLL_CHARACTERISTICSMissing dll Security Characteristics (HIGH_ENTROPY_VA)high

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