MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 083e029e90f71ad347e5e0ee5f1ce9fd9befc9c697c8d17c683d14b9a0be107b. 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 11 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 083e029e90f71ad347e5e0ee5f1ce9fd9befc9c697c8d17c683d14b9a0be107b
SHA3-384 hash: d101241ec5484bac88ed8fc9dda442b8506f9dfe275e05eba1e3170271897e2d3c007d4f9b28d0d69d1ed2c33663a12b
SHA1 hash: 7165669097ec9bba3d0b8b4203b3e87b34587b8b
MD5 hash: dcce58a629dbe6b59808d172070d97fb
humanhash: alpha-xray-michigan-mississippi
File name:file
Download: download sample
Signature RemcosRAT
Create hunting rule
File size:21'605'376 bytes
First seen:2022-12-28 01:47:42 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'747 x AgentTesla, 19'638 x Formbook, 12'244 x SnakeKeylogger)
ssdeep 393216:aA12L5ZNiKE0MKBIDNaQ7sCp5LLu5uNOwKZ1ewb00ZP0U:aA1efNU0lqDNaVa2cO/1esvZsU
Threatray 2'390 similar samples on MalwareBazaar
TLSH T1302733D6874231B3C41139737B5DB10C6FB6981EEC34A6F8E1CAD668D942CB25D3262B
TrID 75.9% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
10.9% (.EXE) Win64 Executable (generic) (10523/12/4)
4.6% (.EXE) Win32 Executable (generic) (4505/5/1)
2.1% (.ICL) Windows Icons Library (generic) (2059/9)
2.1% (.EXE) OS/2 Executable (generic) (2029/13)
File icon (PE):PE icon
dhash icon 00414f4f4f4f4700 (14 x CoinMiner, 12 x RedLineStealer, 12 x NodeLoader)
Reporter jstrosch
Tags:.NET exe MSIL RemcosRAT

Intelligence

File Origin
# of uploads :
1
# of downloads :
236
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
remcos
Create hunting rule
ID:
1
File name:
file
Verdict:
Malicious activity
Analysis date:
2022-12-28 01:51:57 UTC
Tags:
evasion keylogger xworm remcos
Link:
https://app.any.run/tasks/18611993-501f-47ff-9708-ffeaab308a5f

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection(s):
SecuriteInfo.com.Variant.MSIL.Cassiopeia.4.14863.32028.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Сreating synchronization primitives
Creating a file in the %AppData% directory
Creating a process from a recently created file
Creating a file
Enabling the 'hidden' option for recently created files
Creating a file in the %temp% directory
Using the Windows Management Instrumentation requests
Creating a process with a hidden window
Creating a window
Running batch commands
DNS request
Sending an HTTP GET request
Searching for synchronization primitives
Sending a custom TCP request
Launching the default Windows debugger (dwwin.exe)
Connecting to a non-recommended domain
Unauthorized injection to a recently created process
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Unauthorized injection to a recently created process by context flags manipulation
Verdict:
No Threat
Threat level:
  2/10
Confidence:
100%
Tags:
packed
Link:
https://www.filescan.io/uploads/63aba054a70bef46551bcdf7/reports/937a45ad-1d49-460a-9c37-738653781780/overview
Result
Verdict:
MALICIOUS
Result
Threat name:
Remcos
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1141857
Signature
.NET source code contains potential unpacker
Antivirus / Scanner detection for submitted sample
Antivirus detection for dropped file
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Changes security center settings (notifications, updates, antivirus, firewall)
Connects to a pastebin service (likely for C&C)
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
DLL side loading technique detected
Drops PE files with benign system names
Machine Learning detection for dropped file
Machine Learning detection for sample
Malicious sample detected (through community Yara rule)
Maps a DLL or memory area into another process
May check the online IP address of the machine
Query firmware table information (likely to detect VMs)
System process connects to network (likely due to code injection or exploit)
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Yara detected Generic Downloader
Yara detected Remcos RAT
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 774587 Sample: file.exe Startdate: 28/12/2022 Architecture: WINDOWS Score: 100 60 us2.localtonet.com 2->60 62 pastebin.com 2->62 74 Malicious sample detected (through community Yara rule) 2->74 76 Antivirus detection for URL or domain 2->76 78 Antivirus / Scanner detection for submitted sample 2->78 80 7 other signatures 2->80 11 file.exe 5 2->11         started        15 svchost.exe 2->15         started        17 svchost.exe 2->17         started        19 10 other processes 2->19 signatures3 process4 dnsIp5 52 C:\Users\user\AppData\Roaming\svchost.exe, PE32 11->52 dropped 54 C:\Users\user\AppData\Roaming\spec.exe, PE32 11->54 dropped 56 C:\Users\user\AppData\Roaming\Build.exe, PE32+ 11->56 dropped 58 C:\Users\user\AppData\Local\...\file.exe.log, CSV 11->58 dropped 102 Drops PE files with benign system names 11->102 22 svchost.exe 5 4 11->22         started        26 spec.exe 14 2 11->26         started        29 Build.exe 501 11->29         started        104 Changes security center settings (notifications, updates, antivirus, firewall) 15->104 31 MpCmdRun.exe 15->31         started        106 Query firmware table information (likely to detect VMs) 17->106 64 192.168.2.1 unknown unknown 19->64 file6 signatures7 process8 dnsIp9 50 C:\ProgramData\Microsoft-Net\svchost.exe, PE32 22->50 dropped 84 Creates autostart registry keys with suspicious names 22->84 86 Contains functionality to steal Chrome passwords or cookies 22->86 88 Contains functionality to steal Firefox passwords or cookies 22->88 92 2 other signatures 22->92 33 wscript.exe 1 22->33         started        66 ip-api.com 208.95.112.1, 49701, 80 TUT-ASUS United States 26->66 90 May check the online IP address of the machine 26->90 35 WerFault.exe 26->35         started        37 conhost.exe 31->37         started        file10 signatures11 process12 signatures13 40 cmd.exe 33->40         started        82 DLL side loading technique detected 37->82 process14 process15 42 svchost.exe 4 49 40->42         started        46 conhost.exe 40->46         started        dnsIp16 68 us2.localtonet.com 165.140.240.246, 49716, 49740, 51115 WISCNET1-ASUS Reserved 42->68 70 192.168.136.129, 51115 unknown unknown 42->70 72 45.155.125.200, 49726, 51115 TALIDOTR Turkey 42->72 94 Antivirus detection for dropped file 42->94 96 System process connects to network (likely due to code injection or exploit) 42->96 98 Machine Learning detection for dropped file 42->98 100 4 other signatures 42->100 48 svchost.exe 42->48         started        signatures17 process18
Gathering data
Threat name:
ByteCode-MSIL.Trojan.Cassiopeia
Create hunting rule
Status:
Malicious
First seen:
2022-12-28 01:48:22 UTC
File Type:
PE (.Net Exe)
Extracted files:
20
AV detection:
22 of 26 (84.62%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=ba7afhuq64nngr7f4dxf6hhj7wn67sogs7enc7dihukltif6cb5q._file
Verdict:
malicious
Label(s):
remcos
Create hunting rule
Similar samples:
0e1b5e7257b490e22a966862602dee637a6a192f55527137d6c3a94bc9dc34ca
RemcosRAT
36f48dac4f1cc73c684288dd7113e222e1a4026722ce3c55b378402aabe6361c
RemcosRAT
6e52e90b821296bad26f5e889ab6b40bee7912017890cd8f380c0f6d1a89567a
RemcosRAT
7fadbd60573858ffed6181a05604701a0ddf5f38cdb9c0c097cd55b17f9e0d5f
RemcosRAT
8eeee12ec07cb66de78247ff89429970d6fddd4439813520ac1627350f42dfcc
RemcosRAT
93b8d379e6c8211d9c7dce9d7dc16987a824dea3dab8bbbc85235b0f04f4e7c8
RemcosRAT
ae6134942672653a0652d8b74100de3c7bccd094ee66bbc0314e75b276cfb1c8
RemcosRAT
c98bf80d5e23903e4934015e75f6c036130296519548b6014575207d2d296201
RemcosRAT
f7f8d1ebfed3afd13eb47392a7f502603ecb970a817c221682cd8f2a17ff2bb3
RemcosRAT
+ 2'380 additional samples on MalwareBazaar
Result
Malware family:
remcos
Create hunting rule
Score:
  10/10
Tags:
family:remcos botnet:svchost persistence pyinstaller rat upx
Link:
https://tria.ge/reports/221228-b75m5acc2t/
Behaviour
Modifies registry class
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Detects Pyinstaller
Enumerates physical storage devices
Program crash
Suspicious use of SetThreadContext
Adds Run key to start application
Legitimate hosting services abused for malware hosting/C2
Looks up external IP address via web service
Checks computer location settings
Loads dropped DLL
Executes dropped EXE
UPX packed file
Remcos
Malware Config
C2 Extraction:
192.168.136.129:51115
us2.localtonet.com:51115
Malware family:
Remcos
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/083e029e90f7/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/083e029e90f71ad347e5e0ee5f1ce9fd9befc9c697c8d17c683d14b9a0be107b

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:iexplorer_remcos
Create hunting rule
Author:iam-py-test
Description:Detect iexplorer being taken over by Remcos
Rule name:INDICATOR_SUSPICIOUS_EXE_UACBypass_EventViewer
Create hunting rule
Author:ditekSHen
Description:detects Windows exceutables potentially bypassing UAC using eventvwr.exe
Rule name:pdb_YARAify
Create hunting rule
Author:@wowabiy314
Description:PDB
Rule name:pe_imphash
Create hunting rule
Rule name:Remcos
Create hunting rule
Author:kevoreilly
Description:Remcos Payload
Rule name:REMCOS_RAT_variants
Create hunting rule
Rule name:shad0w_beacon_16June
Create hunting rule
Author:SBousseaden
Description:Shad0w beacon compressed
Reference:https://github.com/bats3c/shad0w
Rule name:Skystars_Malware_Imphash
Create hunting rule
Author:Skystars LightDefender
Description:imphash
Rule name:Windows_Trojan_Remcos_b296e965
Create hunting rule
Author:Elastic Security
Rule name:win_remcos_auto
Create hunting rule
Author:Felix Bilstein - yara-signator at cocacoding dot com
Description:Detects win.remcos.

File information

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

Web download

RemcosRAT

Executable exe 083e029e90f71ad347e5e0ee5f1ce9fd9befc9c697c8d17c683d14b9a0be107b

(this sample)

  
Delivery method
Distributed via web download

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