MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 a935e075bc67eff291a72a5828107cfc2da5ede24be470f279c107c396e783f4. 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: 15


Intelligence 15 IOCs YARA 4 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: a935e075bc67eff291a72a5828107cfc2da5ede24be470f279c107c396e783f4
SHA3-384 hash: 38b31efe5a002ffe0a3fc5cc0b4a2daf093cd43b74cd8a7f68633cded0599e0fa9e6f53bb862cbebfef59d05d1f970f6
SHA1 hash: 6bc1034cada85efb6dd77a4da9931191b292b562
MD5 hash: bfee2fb29a4215e5bc824355ce2fdc08
humanhash: south-yankee-oxygen-lion
File name:CLS 8-17 KEE-TAICANG SO0903.PDF.scr
Download: download sample
Signature RemcosRAT
Create hunting rule
File size:1'164'288 bytes
First seen:2023-08-12 07:35:42 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'652 x AgentTesla, 19'463 x Formbook, 12'204 x SnakeKeylogger)
ssdeep 24576:HBn8CUk/09eJP7QmlRh8VVwYvwCceZyxtdTj5:hn83HCP7QmV8VRw9ict
Threatray 2'436 similar samples on MalwareBazaar
TLSH T15645E160EE7DDF86E56B4BB8404ED74D83724C593122C63A5EAB50CAD0933C1069B7AF
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)
Reporter abuse_ch
Tags:exe RAT RemcosRAT scr

Intelligence

File Origin
# of uploads :
1
# of downloads :
275
Origin country :
NL NL
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
CLS 8-17 KEE-TAICANG SO0903.PDF.scr
Verdict:
Malicious activity
Analysis date:
2023-08-12 07:44:03 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/c907663b-071b-48b8-9a10-a4cf233ad7e3

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/442292/
Detection(s):
Porcupine.Malware.58887.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Сreating synchronization primitives
Searching for synchronization primitives
Creating a window
Restart of the analyzed sample
Creating a file
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:
Trojan.Generic
Link:
https://www.hybrid-analysis.com/sample/a935e075bc67eff291a72a5828107cfc2da5ede24be470f279c107c396e783f4
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/83413126-52a2-4bf3-bb0d-cd8cdd2d69bb
Result
Threat name:
Remcos
Create hunting rule
Detection:
malicious
Classification:
rans.troj.spyw.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1290394
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
Contains functionalty to change the wallpaper
Creates autostart registry keys with suspicious names
Delayed program exit found
Found malware configuration
Initial sample is a PE file and has a suspicious name
Injects a PE file into a foreign processes
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Uses an obfuscated file name to hide its real file extension (double extension)
Yara detected AntiVM3
Yara detected Remcos RAT
Yara detected UAC Bypass using CMSTP
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 1290394 Sample: CLS_8-17_KEE-TAICANG_SO0903... Startdate: 12/08/2023 Architecture: WINDOWS Score: 100 40 Found malware configuration 2->40 42 Malicious sample detected (through community Yara rule) 2->42 44 Multi AV Scanner detection for submitted file 2->44 46 7 other signatures 2->46 8 CLS_8-17_KEE-TAICANG_SO0903.PDF.scr.exe 3 2->8         started        11 Filllin.exe 2 2->11         started        13 Filllin.exe 2 2->13         started        15 Filllin.exe 2 2->15         started        process3 signatures4 50 Contains functionality to bypass UAC (CMSTPLUA) 8->50 52 Contains functionalty to change the wallpaper 8->52 54 Contains functionality to steal Chrome passwords or cookies 8->54 56 3 other signatures 8->56 17 CLS_8-17_KEE-TAICANG_SO0903.PDF.scr.exe 2 4 8->17         started        22 Filllin.exe 11->22         started        24 Filllin.exe 13->24         started        26 Filllin.exe 15->26         started        process5 dnsIp6 36 192.168.2.1 unknown unknown 17->36 34 C:\ProgramData\Filllin\Filllin.exe, PE32 17->34 dropped 48 Creates autostart registry keys with suspicious names 17->48 28 Filllin.exe 3 17->28         started        file7 signatures8 process9 signatures10 58 Multi AV Scanner detection for dropped file 28->58 60 Injects a PE file into a foreign processes 28->60 31 Filllin.exe 3 1 28->31         started        process11 dnsIp12 38 45.74.19.42, 6420 HVC-ASUS United States 31->38
Detection:
remcos
Create hunting rule
Link:
https://mwdb.cert.pl/sample/a935e075bc67eff291a72a5828107cfc2da5ede24be470f279c107c396e783f4/
Threat name:
Win32.Trojan.Leonem
Create hunting rule
Status:
Malicious
First seen:
2023-08-11 02:24:22 UTC
File Type:
PE (.Net Exe)
Extracted files:
11
AV detection:
13 of 24 (54.17%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=ve26a5n4m7x7fenhfjmcqed47qw2l3pcjpshb4tzyed4hfxhqp2a._file
Verdict:
malicious
Label(s):
remcos
Create hunting rule
agenttesla
Create hunting rule
Similar samples:
3da90b636e39cd1f67e3542c60d813c6ff8152f7f740b3ef4ef086ef120836df
RemcosRAT
55b379ec8cd752f104605bdbd88048c1c3b49c328b393ba496494a118ef5ae16
RemcosRAT
5e95168687b15de3724b3c8240c0b40cdb61c75b440d11a7fa72c2b247c920ae
RemcosRAT
67c7c5ec03b9334d1a132f2b0fd7ddc99515ccdb2372aa3b16463ea34d09f060
RemcosRAT
a8ae7002d16df08878c864f8cd2f8722dfcb5950372f3b12c88f4e265f2eee40
RemcosRAT
b41e4528449d3fa1730eca98df0dc9fd9e3683ccfaedf1d72ee2af2899f18db8
RemcosRAT
e5ecc9b504121707ebc8782b5a81546ee41e7141d5554271030111c51cc2501f
RemcosRAT
e970fdbbcd35127388ad909820df33fbe5d0a7bd4b52ccde011c5782edfe03fc
RemcosRAT
ea903fc267537ec6bcb77791b967bf3b217202084e2ad9583f311f100a4de459
RemcosRAT
+ 2'426 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/230812-je8s3saf74/
Behaviour
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Suspicious use of SetThreadContext
Adds Run key to start application
Executes dropped EXE
Loads dropped DLL
Remcos
Malware Config
C2 Extraction:
45.74.19.42:6420
Unpacked files
SH256 hash:
3843085568c49e0c28373b5702cdbbba458a43097183ffb8eb41c3b29fbcb878
MD5 hash:
ac9a3a100df017616e80cf16f5da00cd
SHA1 hash:
0251f2bdf3f13ff10b0086ea5e319e19a518907c
Link:
https://www.unpac.me/results/8de05bb8-57a8-422f-916d-fc9a5e2a98e3/
SH256 hash:
00c14ed2a8a9c8b9d6e2c345a1b29d28c56002167809a25081d0026a2250e0cd
MD5 hash:
04c8a360ce97d47e78bc8bbb180ea23a
SHA1 hash:
f6e9a737bf785ab7442a2731013b73d70562d97c
Detections:
Remcos
Create hunting rule
win_remcos_auto
Create hunting rule
Link:
https://www.unpac.me/results/8de05bb8-57a8-422f-916d-fc9a5e2a98e3/
SH256 hash:
5bd7e23ceea02a139dee0ef9577991480b33f276b9fc3cd9afdeb0491c878b57
MD5 hash:
7a5a241397047c8cdc1fc0710fdd37d8
SHA1 hash:
ee3dabb1a3f203a8971c1bb7083701c516a9f5b2
Link:
https://www.unpac.me/results/8de05bb8-57a8-422f-916d-fc9a5e2a98e3/
SH256 hash:
504410fd6158a7346f5a2e7b7714203b329d46dab5d129719410d5c325122804
MD5 hash:
74ed681a2d7aed1dae5627d4367474f8
SHA1 hash:
cad2df636d3f0710f69fdb18cbae03a332341dd3
Link:
https://www.unpac.me/results/8de05bb8-57a8-422f-916d-fc9a5e2a98e3/
SH256 hash:
a935e075bc67eff291a72a5828107cfc2da5ede24be470f279c107c396e783f4
MD5 hash:
bfee2fb29a4215e5bc824355ce2fdc08
SHA1 hash:
6bc1034cada85efb6dd77a4da9931191b292b562
Link:
https://www.unpac.me/results/8de05bb8-57a8-422f-916d-fc9a5e2a98e3/
Malware family:
Remcos
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/a935e075bc67/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/a935e075bc67eff291a72a5828107cfc2da5ede24be470f279c107c396e783f4

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:BitcoinAddress
Create hunting rule
Author:Didier Stevens (@DidierStevens)
Description:Contains a valid Bitcoin address
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.

Malspam

RemcosRAT

Executable exe a935e075bc67eff291a72a5828107cfc2da5ede24be470f279c107c396e783f4

(this sample)

  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/442292/

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