MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 4a2002d591a7957dbe2cc2a3b6a8e40ab667966497ddda2c8038ec58233b1fd9. 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 7 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 4a2002d591a7957dbe2cc2a3b6a8e40ab667966497ddda2c8038ec58233b1fd9
SHA3-384 hash: c97effe88844c0cfa5a20700198a934c05f6125eb37d63e544f647586cab0ec086fead271bed8809aa1b1cabbd5302c8
SHA1 hash: 3069930731045ac061348018e80d39980d8a6d5c
MD5 hash: bf05763ecc8e4aee23f7a8dfb2aa4d14
humanhash: india-alaska-november-spring
File name:doc202302089901039991999.exe
Download: download sample
Signature RemcosRAT
Create hunting rule
File size:538'163 bytes
First seen:2023-02-11 00:30:08 UTC
Last seen:2023-02-11 02:29:24 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash 61259b55b8912888e90f516ca08dc514 (1'059 x Formbook, 741 x AgentTesla, 427 x GuLoader)
ssdeep 12288:JYwxP/I2ByUuDgu+QcIWvRhgbGeSHlCVA8NXCD8m6M05UtXXldKy6f1Oa52N:JYw9/fuDgu3cNphgbgki58zRWFdKndOn
Threatray 2'628 similar samples on MalwareBazaar
TLSH T156B423116438119BFEB71A30BA3D0C14CB74792A5878670B2BE5269AB837745CC5FF36
TrID 47.3% (.EXE) Win32 Executable MS Visual C++ (generic) (31206/45/13)
15.9% (.EXE) Win64 Executable (generic) (10523/12/4)
9.9% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
7.6% (.EXE) Win16 NE executable (generic) (5038/12/1)
6.8% (.EXE) Win32 Executable (generic) (4505/5/1)
File icon (PE):PE icon
dhash icon 7c8c8ccc84c6c5e1 (3 x Loki, 3 x RemcosRAT, 2 x Formbook)
Reporter Anonymous
Tags:exe RemcosRAT

Intelligence

File Origin
# of uploads :
2
# of downloads :
204
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
remcos
Create hunting rule
ID:
1
File name:
doc202302089901039991999.exe
Verdict:
Malicious activity
Analysis date:
2023-02-11 00:31:02 UTC
Tags:
rat remcos keylogger
Link:
https://app.any.run/tasks/5b78ce65-b3fc-498b-958b-fde7611ca3de

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/363640/
Detection(s):
SecuriteInfo.com.Trojan.GenericKD.65407517.25286.2938.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a file in the %temp% directory
Creating a window
Creating a process from a recently created file
Creating a file in the %AppData% subdirectories
Сreating synchronization primitives
Setting a keyboard event handler
DNS request
Sending a custom TCP request
Sending an HTTP GET request
Creating a file
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Unauthorized injection to a recently created process by context flags manipulation
Result
Malware family:
n/a
Score:
  5/10
Tags:
n/a
Link:
https://dragonfly.certego.net/analysis/67853/overview
Behaviour
MalwareBazaar
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
overlay packed remcos shell32.dll
Link:
https://www.filescan.io/uploads/63e6e1c6d68ac683b34bb247/reports/603731d4-d0e9-43c0-a66c-785a729007df/overview
Verdict:
Malicious
Labled as:
Win/malicious_confidence_100%
Link:
https://www.hybrid-analysis.com/sample/4a2002d591a7957dbe2cc2a3b6a8e40ab667966497ddda2c8038ec58233b1fd9
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/c7463a81-7f99-45a4-bab0-a8e11d435232
Result
Threat name:
Remcos
Create hunting rule
Detection:
malicious
Classification:
rans.troj.spyw.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1171634
Signature
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Contains functionality to bypass UAC (CMSTPLUA)
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
Found evasive API chain (may stop execution after reading information in the PEB, e.g. number of processors)
Installs a global keyboard hook
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 dropped file
Multi AV Scanner detection for submitted file
Sigma detected: Remcos
Uses dynamic DNS services
Yara detected Remcos RAT
Yara detected UAC Bypass using CMSTP
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 804424 Sample: doc202302089901039991999.exe Startdate: 11/02/2023 Architecture: WINDOWS Score: 100 50 Malicious sample detected (through community Yara rule) 2->50 52 Antivirus detection for URL or domain 2->52 54 Multi AV Scanner detection for submitted file 2->54 56 6 other signatures 2->56 7 doc202302089901039991999.exe 19 2->7         started        10 htvnsfxhjqyy.exe 2->10         started        13 htvnsfxhjqyy.exe 2->13         started        process3 file4 32 C:\Users\user\AppData\Local\...\ffbeplfp.exe, PE32 7->32 dropped 15 ffbeplfp.exe 1 2 7->15         started        60 Multi AV Scanner detection for dropped file 10->60 19 WerFault.exe 1 10 10->19         started        21 WerFault.exe 4 10 13->21         started        signatures5 process6 file7 36 C:\Users\user\AppData\...\htvnsfxhjqyy.exe, PE32 15->36 dropped 42 Multi AV Scanner detection for dropped file 15->42 44 Contains functionality to bypass UAC (CMSTPLUA) 15->44 46 Contains functionalty to change the wallpaper 15->46 48 5 other signatures 15->48 23 ffbeplfp.exe 2 17 15->23         started        28 ffbeplfp.exe 15->28         started        30 ffbeplfp.exe 15->30         started        signatures8 process9 dnsIp10 38 report1.duckdns.org 195.3.223.117, 49699, 5890 PL-SKYTECH-ASPL Poland 23->38 40 geoplugin.net 178.237.33.50, 49700, 80 ATOM86-ASATOM86NL Netherlands 23->40 34 C:\ProgramData\remcos\logs.dat, data 23->34 dropped 58 Installs a global keyboard hook 23->58 file11 signatures12
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/4a2002d591a7957dbe2cc2a3b6a8e40ab667966497ddda2c8038ec58233b1fd9/
Threat name:
Win32.Backdoor.Remcos
Create hunting rule
Status:
Malicious
First seen:
2023-02-08 10:09:21 UTC
File Type:
PE (Exe)
Extracted files:
3
AV detection:
22 of 26 (84.62%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=jiqafvmru6kx3prmykr3nkhebk3gpftes7o5uleahdwfqiz3d7mq._file
Verdict:
malicious
Label(s):
remcos
Create hunting rule
Similar samples:
186f0d4f01e510e5f09833366eb78f32542c8614a74d9101a927b0970fde4937
RemcosRAT
1cdd50cbdf51d44354d596e4a1f8a3fee6268362ffdce61b608322bba56ebdb0
RemcosRAT
62f4359aef9d0d604c03c099da375debd0d98f20cf4f673a5a32bd64989076ca
RemcosRAT
7f957a63ff320cf43b53f9f8e7a11ffd327c12a63704cc7fdf11a9a1111ed8f7
RemcosRAT
808bb32f710ae23d2a4b53b873f766bf56d905dbe8e51810edd15ff79538cd94
RemcosRAT
d542654502d1d20bd12562b35902d69e78236e4fc1246617788bb8d0d695b86c
RemcosRAT
d735fd2abee0e57fd410a4d0978305703f8cfcb3b990e342df3b66d86a65d04d
RemcosRAT
+ 2'618 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/230211-at2tmsfa74/
Behaviour
Suspicious behavior: MapViewOfSection
Suspicious use of SetWindowsHookEx
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:
report1.duckdns.org:5890
Unpacked files
SH256 hash:
192fa0591be0213cf5eb86d3b70db863f8953e3bc1d555d456b51752cf8644a5
MD5 hash:
1cd3378b7a7b867038e7372f72eb219a
SHA1 hash:
6d8034b762d2828e51babe8e4a322f3a0bfa047a
Detections:
Remcos
Create hunting rule
win_remcos_auto
Create hunting rule
Link:
https://www.unpac.me/results/c233b241-882e-47e8-9050-94c796f77daf/
Parent samples :
d735fd2abee0e57fd410a4d0978305703f8cfcb3b990e342df3b66d86a65d04d
7f957a63ff320cf43b53f9f8e7a11ffd327c12a63704cc7fdf11a9a1111ed8f7
4a2002d591a7957dbe2cc2a3b6a8e40ab667966497ddda2c8038ec58233b1fd9
e0bf2af1713abe4f3c276ff977a8405ad655b4cf43def74cea14b06540d5ca00
71413583e55230a0a3a659cae17e5a23da5db0b660ed850b268c16680945995a
25ba7b40ff6921b6590360a905d4389e799e0fc9f69f131f8ec21611482cde82
SH256 hash:
a3cdb290594438c7fbbf06625fbacd4fd8e6b889c218ccb0247f2b5a67cb1e12
MD5 hash:
ec521237ea3a1930e8d0867843cff77b
SHA1 hash:
c037b41069b4e357bf3914a574671bf64dc1e24c
Link:
https://www.unpac.me/results/c233b241-882e-47e8-9050-94c796f77daf/
SH256 hash:
4a2002d591a7957dbe2cc2a3b6a8e40ab667966497ddda2c8038ec58233b1fd9
MD5 hash:
bf05763ecc8e4aee23f7a8dfb2aa4d14
SHA1 hash:
3069930731045ac061348018e80d39980d8a6d5c
Link:
https://www.unpac.me/results/c233b241-882e-47e8-9050-94c796f77daf/
Malware family:
Remcos
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/4a2002d591a7/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/4a2002d591a7957dbe2cc2a3b6a8e40ab667966497ddda2c8038ec58233b1fd9

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:iexplorer_remcos
Create hunting rule
Author:iam-py-test
Description:Detect iexplorer being taken over by Remcos
Rule name:INDICATOR_SUSPICIOUS_EXE_UACBypass_CMSTPCOM
Create hunting rule
Author:ditekSHen
Description:Detects Windows exceutables bypassing UAC using CMSTP COM interfaces. MITRE (T1218.003)
Rule name:Remcos
Create hunting rule
Author:kevoreilly
Description:Remcos Payload
Rule name:REMCOS_RAT_variants
Create hunting rule
Rule name:shellcode
Create hunting rule
Author:nex
Description:Matched shellcode byte patterns
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.

Malspam

RemcosRAT

Executable exe 4a2002d591a7957dbe2cc2a3b6a8e40ab667966497ddda2c8038ec58233b1fd9

(this sample)

  
Dropped by
RemcosRAT
  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/363640/

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