MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 28894ebd9537959f6d45cb8f5cd21fcff66472820f5e8bcc6944276fa32c2623. 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 7 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 28894ebd9537959f6d45cb8f5cd21fcff66472820f5e8bcc6944276fa32c2623
SHA3-384 hash: 03f77c2b9361fd3a7e4f2111404ced451a70f24de28d4751eae20cef291db511500a7ede6f98898683e6f923463260ef
SHA1 hash: 580d7567a92ff65e67744bd654bdb0cd933d1a92
MD5 hash: 437f3f70d71155865c2e01a1928e8bd5
humanhash: wyoming-delta-lactose-violet
File name:SOA.exe
Download: download sample
Signature RemcosRAT
Create hunting rule
File size:512'719 bytes
First seen:2023-02-10 14:05:55 UTC
Last seen:2023-02-10 18:17:54 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash 61259b55b8912888e90f516ca08dc514 (1'059 x Formbook, 741 x AgentTesla, 431 x GuLoader)
ssdeep 12288:/YQeU7K780B+TmgcOOS+ZztLUeGML2GrReEOxUgmMgj1W+HoLxfPlX:/YQeU7K78sUJcfJNUeGMLzVrrDhJWEC3
TLSH T14DB42318EBE0C9F3DBE04A32473527076FF715251861936B67038A5ABC73595AB2F322
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 b2a89c96a2cada72 (2'283 x Formbook, 981 x Loki, 803 x AgentTesla)
Reporter James_inthe_box
Tags:exe RemcosRAT

Intelligence

File Origin
# of uploads :
3
# of downloads :
197
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
remcos
Create hunting rule
ID:
1
File name:
28894ebd9537959f6d45cb8f5cd21fcff66472820f5e8bcc6944276fa32c2623.exe
Verdict:
Malicious activity
Analysis date:
2023-02-10 12:29:09 UTC
Tags:
rat remcos
Link:
https://app.any.run/tasks/fd63a83f-f17d-452f-9e74-8f4993fdda4b

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/363396/
Detection(s):
Sanesecurity.Rogue.0hr.20230210-0733.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Creating a file in the %temp% directory
Creating a window
Creating a process from a recently created file
Сreating synchronization primitives
Sending a custom TCP request
DNS request
Sending an HTTP GET request
Reading critical registry keys
Unauthorized injection to a recently created process
Unauthorized injection to a recently created process by context flags manipulation
Stealing user critical data
Result
Malware family:
n/a
Score:
  5/10
Tags:
n/a
Link:
https://dragonfly.certego.net/analysis/67642/overview
Behaviour
MalwareBazaar
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
overlay packed remcos shell32.dll
Link:
https://www.filescan.io/uploads/63e64f4cfc4dffab0ccfab87/reports/937982a7-15e7-4425-9e53-7455a660f090/overview
Verdict:
Malicious
Labled as:
Win/malicious_confidence_100%
Link:
https://www.hybrid-analysis.com/sample/28894ebd9537959f6d45cb8f5cd21fcff66472820f5e8bcc6944276fa32c2623
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/a16a4802-f22b-4f4e-9fca-878e449e04a3
Result
Threat name:
Remcos
Create hunting rule
Detection:
malicious
Classification:
phis.troj.spyw.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1171210
Signature
C2 URLs / IPs found in malware configuration
Contains functionality to bypass UAC (CMSTPLUA)
Contains functionality to inject code into remote processes
Contains functionality to steal Chrome passwords or cookies
Contains functionality to steal Firefox passwords or cookies
Delayed program exit found
Detected unpacking (changes PE section rights)
Detected unpacking (overwrites its own PE header)
Found evasive API chain (may stop execution after reading information in the PEB, e.g. number of processors)
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
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)
Yara detected Remcos RAT
Yara detected UAC Bypass using CMSTP
Yara detected WebBrowserPassView password recovery tool
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 804003 Sample: SOA.exe Startdate: 10/02/2023 Architecture: WINDOWS Score: 100 38 Malicious sample detected (through community Yara rule) 2->38 40 Multi AV Scanner detection for submitted file 2->40 42 Yara detected UAC Bypass using CMSTP 2->42 44 5 other signatures 2->44 8 SOA.exe 19 2->8         started        process3 file4 30 C:\Users\user\AppData\...\expdvnqqrv.exe, PE32 8->30 dropped 11 expdvnqqrv.exe 1 8->11         started        process5 signatures6 52 Multi AV Scanner detection for dropped file 11->52 54 Contains functionality to bypass UAC (CMSTPLUA) 11->54 56 Detected unpacking (changes PE section rights) 11->56 58 7 other signatures 11->58 14 expdvnqqrv.exe 2 14 11->14         started        18 conhost.exe 11->18         started        process7 dnsIp8 34 45.87.61.104, 3033, 49708, 49709 ASN-QUADRANET-GLOBALUS United Kingdom 14->34 36 geoplugin.net 178.237.33.50, 49710, 80 ATOM86-ASATOM86NL Netherlands 14->36 60 Maps a DLL or memory area into another process 14->60 20 expdvnqqrv.exe 1 14->20         started        23 expdvnqqrv.exe 1 14->23         started        25 expdvnqqrv.exe 1 14->25         started        27 6 other processes 14->27 signatures9 process10 dnsIp11 46 Tries to steal Instant Messenger accounts or passwords 20->46 48 Tries to steal Mail credentials (via file / registry access) 20->48 32 192.168.2.1 unknown unknown 27->32 50 Tries to harvest and steal browser information (history, passwords, etc) 27->50 signatures12
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/28894ebd9537959f6d45cb8f5cd21fcff66472820f5e8bcc6944276fa32c2623/
Threat name:
Win32.Trojan.Remcos
Create hunting rule
Status:
Malicious
First seen:
2023-02-10 13:40:41 UTC
File Type:
PE (Exe)
Extracted files:
4
AV detection:
22 of 38 (57.89%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=fceu5pmvg6kz63kfzohvzuq7z73gi4ucb5pixtdjiqtw7izmeyrq._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/230210-reeh8scc5s/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Suspicious use of SetThreadContext
Accesses Microsoft Outlook accounts
Executes dropped EXE
Loads dropped DLL
Reads user/profile data of web browsers
NirSoft MailPassView
NirSoft WebBrowserPassView
Nirsoft
Remcos
Malware Config
C2 Extraction:
45.87.61.104:3033
Unpacked files
SH256 hash:
c6baf53b2c306624b5e89700f4a41a74365632becdb11a0f88c61388f716272a
MD5 hash:
1a6f477d853cb2bbc949b172794d5381
SHA1 hash:
25f6d7de9b9cc2f360324e10e425dc040270a1db
Link:
https://www.unpac.me/results/3a6fae18-e9cb-4225-b071-2d3aa1f822f9/
SH256 hash:
28894ebd9537959f6d45cb8f5cd21fcff66472820f5e8bcc6944276fa32c2623
MD5 hash:
437f3f70d71155865c2e01a1928e8bd5
SHA1 hash:
580d7567a92ff65e67744bd654bdb0cd933d1a92
Link:
https://www.unpac.me/results/3a6fae18-e9cb-4225-b071-2d3aa1f822f9/
Malware family:
Remcos
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/28894ebd9537/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/28894ebd9537959f6d45cb8f5cd21fcff66472820f5e8bcc6944276fa32c2623

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.

  
Delivery method
Other
Cape
Cape
https://www.capesandbox.com/analysis/363396/

Comments