MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 4a23b3a3cc728ab547f5f3f5149f70242187b45aefa26c5f5663f8cbabeb2330. 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: 17


Intelligence 17 IOCs YARA 2 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 4a23b3a3cc728ab547f5f3f5149f70242187b45aefa26c5f5663f8cbabeb2330
SHA3-384 hash: 1e47fe48f06be5ef0adfc955e1b3c6fb4cde1d6c0ebf80a5e1e84cb4598ad10fc101db86bd25811d7bdf353c875d06d4
SHA1 hash: 48324337f8a4196a2107f4c68f9814ed4e388c40
MD5 hash: a20975fa1daf5a6c54392036f664f0d0
humanhash: wisconsin-johnny-early-golf
File name:a20975fa1daf5a6c54392036f664f0d0.exe
Download: download sample
Signature RemcosRAT
Create hunting rule
File size:911'872 bytes
First seen:2023-07-25 18:25:35 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'740 x AgentTesla, 19'600 x Formbook, 12'241 x SnakeKeylogger)
ssdeep 12288:OXPZE28gvHh0uiZPrnQpVftyKe/C54B1pIVho1aXtTwFx5qhFnykr1X9J2demMmn:Z3wHh0D90pVVraCsIVhvOx5tE1Pm/
Threatray 2'292 similar samples on MalwareBazaar
TLSH T11215231563CC9715D5EE27BA0C9098200BF2E99B2233FB4C2E9E64F54D253651B83B6B
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) (4505/5/1)
2.0% (.ICL) Windows Icons Library (generic) (2059/9)
File icon (PE):PE icon
dhash icon 2d6dbd754d4d71b2 (8 x AgentTesla, 6 x Formbook, 1 x SnakeKeylogger)
Reporter abuse_ch
Tags:exe RemcosRAT

Intelligence

File Origin
# of uploads :
1
# of downloads :
271
Origin country :
NL NL
Vendor Threat Intelligence
Malware family:
remcos
Create hunting rule
ID:
1
File name:
a20975fa1daf5a6c54392036f664f0d0.exe
Verdict:
Malicious activity
Analysis date:
2023-07-25 18:31:35 UTC
Tags:
rat remcos
Link:
https://app.any.run/tasks/dfddf318-4516-4941-a947-ba4aef4f2aa7

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/433050/
Detection(s):
SecuriteInfo.com.Win32.PWSX-gen.18080.27213.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Restart of the analyzed sample
Creating a file
Сreating synchronization primitives
Creating a process from a recently created file
Unauthorized injection to a recently created process
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Gathering data
Verdict:
Malicious
Labled as:
Win/malicious_confidence_100%
Link:
https://www.hybrid-analysis.com/sample/4a23b3a3cc728ab547f5f3f5149f70242187b45aefa26c5f5663f8cbabeb2330
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:
REMCOS
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/c4a63b76-f29d-49ae-9951-687240a7bf5c
Result
Threat name:
Remcos
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1279507
Signature
.NET source code contains potential unpacker
C2 URLs / IPs found in malware configuration
Contains functionality to bypass UAC (CMSTPLUA)
Contains functionality to modify clipboard data
Contains functionality to steal Chrome passwords or cookies
Contains functionality to steal Firefox passwords or cookies
Creates autostart registry keys with suspicious names
Delayed program exit found
Found malware configuration
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Sigma detected: Remcos
Yara detected Remcos RAT
Yara detected UAC Bypass using CMSTP
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 1279507 Sample: 5wrk00UbH2.exe Startdate: 25/07/2023 Architecture: WINDOWS Score: 100 50 Found malware configuration 2->50 52 Malicious sample detected (through community Yara rule) 2->52 54 Multi AV Scanner detection for submitted file 2->54 56 5 other signatures 2->56 8 5wrk00UbH2.exe 3 2->8         started        12 remcos.exe 2 2->12         started        14 remcos.exe 2 2->14         started        16 remcos.exe 2 2->16         started        process3 file4 44 C:\Users\user\AppData\...\5wrk00UbH2.exe.log, ASCII 8->44 dropped 60 Contains functionality to bypass UAC (CMSTPLUA) 8->60 62 Contains functionality to steal Chrome passwords or cookies 8->62 64 Contains functionality to modify clipboard data 8->64 66 2 other signatures 8->66 18 5wrk00UbH2.exe 2 4 8->18         started        22 remcos.exe 12->22         started        24 remcos.exe 12->24         started        26 remcos.exe 12->26         started        28 remcos.exe 14->28         started        30 remcos.exe 16->30         started        signatures5 process6 file7 42 C:\ProgramData\Remcos\remcos.exe, PE32 18->42 dropped 58 Creates autostart registry keys with suspicious names 18->58 32 remcos.exe 3 18->32         started        signatures8 process9 signatures10 48 Multi AV Scanner detection for dropped file 32->48 35 remcos.exe 3 1 32->35         started        38 remcos.exe 32->38         started        40 remcos.exe 32->40         started        process11 dnsIp12 46 23.106.60.117, 49716, 49717, 49718 LEASEWEB-UK-LON-11GB United Kingdom 35->46
Detection:
remcos
Create hunting rule
Link:
https://mwdb.cert.pl/sample/4a23b3a3cc728ab547f5f3f5149f70242187b45aefa26c5f5663f8cbabeb2330/
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
Create hunting rule
Status:
Malicious
First seen:
2023-07-25 18:26:08 UTC
File Type:
PE (.Net Exe)
Extracted files:
9
AV detection:
17 of 24 (70.83%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=jir3hi6mokflkr7v6p2rjh3qeqqypnc256rgyx2wmp4mxk7lemya._file
Verdict:
malicious
Label(s):
remcos
Create hunting rule
Similar samples:
3da90b636e39cd1f67e3542c60d813c6ff8152f7f740b3ef4ef086ef120836df
RemcosRAT
55b379ec8cd752f104605bdbd88048c1c3b49c328b393ba496494a118ef5ae16
RemcosRAT
5e95168687b15de3724b3c8240c0b40cdb61c75b440d11a7fa72c2b247c920ae
RemcosRAT
67c7c5ec03b9334d1a132f2b0fd7ddc99515ccdb2372aa3b16463ea34d09f060
RemcosRAT
a8ae7002d16df08878c864f8cd2f8722dfcb5950372f3b12c88f4e265f2eee40
RemcosRAT
b41e4528449d3fa1730eca98df0dc9fd9e3683ccfaedf1d72ee2af2899f18db8
RemcosRAT
e5ecc9b504121707ebc8782b5a81546ee41e7141d5554271030111c51cc2501f
RemcosRAT
e970fdbbcd35127388ad909820df33fbe5d0a7bd4b52ccde011c5782edfe03fc
RemcosRAT
ea903fc267537ec6bcb77791b967bf3b217202084e2ad9583f311f100a4de459
RemcosRAT
+ 2'282 additional samples on MalwareBazaar
Result
Malware family:
remcos
Create hunting rule
Score:
  10/10
Tags:
family:remcos botnet:remotehost persistence rat
Link:
https://tria.ge/reports/230725-w26y8afe6x/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Suspicious use of SetThreadContext
Adds Run key to start application
Loads dropped DLL
Checks computer location settings
Executes dropped EXE
Remcos
Malware Config
C2 Extraction:
23.106.60.117:7719
Unpacked files
SH256 hash:
569ce6fa02b8e1c06eda1e85ceea7c3086cb7b640887cadbcf84ad4134702c77
MD5 hash:
c9dcfd78f69bb6af5ae4d44b7334122c
SHA1 hash:
d907c29953fd326b6f4329b6b0264d1dde976754
Link:
https://www.unpac.me/results/959acf9e-0b06-4d09-b820-2472b8b21b2c/
SH256 hash:
53f2ad060cf771aa4f197df5789cee95959480c244a0b392bb450c8ce7311d77
MD5 hash:
37e82d3e2864e27b34f5fbacaea759c3
SHA1 hash:
a87024a466e052bff09a170bb8c6f374f6c84c32
Link:
https://www.unpac.me/results/959acf9e-0b06-4d09-b820-2472b8b21b2c/
SH256 hash:
1bf69033e97a8ad8d59469dd2f1aa57bab7461345e9993acc83afa48029c95ac
MD5 hash:
58419415321b3303da79fcd299874125
SHA1 hash:
a7a4c4fb47ccefd232a543219e2f4e0e12520912
Link:
https://www.unpac.me/results/959acf9e-0b06-4d09-b820-2472b8b21b2c/
SH256 hash:
f68472727705663fe6177c6e075893d6b3d87d16012b5c1b2c02cb8b2c020df4
MD5 hash:
af51fdf6b58aa7ece4bf07bb21d49bdb
SHA1 hash:
2f8f0141230c8a937d55000fc6605be14f6e52e2
Detections:
Remcos
Create hunting rule
win_remcos_auto
Create hunting rule
Link:
https://www.unpac.me/results/959acf9e-0b06-4d09-b820-2472b8b21b2c/
Parent samples :
8a7703a7a13f95e6e58aac075b70bc322355e7f683e04824c17407a1881838cf
4a23b3a3cc728ab547f5f3f5149f70242187b45aefa26c5f5663f8cbabeb2330
SH256 hash:
4a23b3a3cc728ab547f5f3f5149f70242187b45aefa26c5f5663f8cbabeb2330
MD5 hash:
a20975fa1daf5a6c54392036f664f0d0
SHA1 hash:
48324337f8a4196a2107f4c68f9814ed4e388c40
Link:
https://www.unpac.me/results/959acf9e-0b06-4d09-b820-2472b8b21b2c/
Malware family:
Remcos
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/4a23b3a3cc72/report/overview.html
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/4a23b3a3cc728ab547f5f3f5149f70242187b45aefa26c5f5663f8cbabeb2330

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: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.

Web download

RemcosRAT

Executable exe 4a23b3a3cc728ab547f5f3f5149f70242187b45aefa26c5f5663f8cbabeb2330

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/2684283/
  
Delivery method
Distributed via web download
Cape
Cape
https://www.capesandbox.com/analysis/433050/

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