MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 a91fbd2b52512693c51c92da3cf1541ac39863e647dcc681457f88117fee289b. 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: 14


Intelligence 14 IOCs YARA File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: a91fbd2b52512693c51c92da3cf1541ac39863e647dcc681457f88117fee289b
SHA3-384 hash: b73d18829ffe46879a2c65d254906bcbea81f58d1f91a6197fe5a4a5a7f8c884a3abc2b0c90dc022855b31a1cbfa702e
SHA1 hash: 2e65b1d5b8a5da2aae82c3a5faca2106bce6b630
MD5 hash: f30b5071b8514c7d551d5018fecbe7f2
humanhash: music-batman-alanine-maine
File name:July_shipment_order#56534536_document_file_view.exe
Download: download sample
Signature RemcosRAT
Create hunting rule
File size:826'368 bytes
First seen:2023-07-27 10:14:17 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
ssdeep 24576:96JfltMgJ6kxi/RRu7QB+Gdkh0roQPz03:UfsDGORw7QQaDoQL03
Threatray 30 similar samples on MalwareBazaar
TLSH T1B60512E471B3055BEF594EF8C1602A5BAE2F603E54B0A281795C32436DB33D7C7B9262
TrID 44.4% (.EXE) Win64 Executable (generic) (10523/12/4)
21.3% (.EXE) Win16 NE executable (generic) (5038/12/1)
8.7% (.ICL) Windows Icons Library (generic) (2059/9)
8.5% (.EXE) OS/2 Executable (generic) (2029/13)
8.4% (.EXE) Generic Win/DOS Executable (2002/3)
Reporter abuse_ch
Tags:exe RemcosRAT

Intelligence

File Origin
# of uploads :
1
# of downloads :
272
Origin country :
NL NL
Vendor Threat Intelligence
Malware family:
remcos
Create hunting rule
ID:
1
File name:
July_shipment_order#56534536_document_file_view.exe
Verdict:
Malicious activity
Analysis date:
2023-07-27 10:25:27 UTC
Tags:
rat remcos remote
Link:
https://app.any.run/tasks/3cf20822-5ba3-4daa-9292-5e2e0cc119e5

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/434754/
Detection(s):
SecuriteInfo.com.Win64.PWSX-gen.4992.273.UNOFFICIAL
Create hunting rule

Result
Verdict:
Clean
Maliciousness:

Behaviour
Creating a file
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
masquerade packed remcos
Link:
https://www.filescan.io/uploads/64c243ad5154a489a4586049/reports/3194443b-afaa-4092-b4dc-ae0fbee4b8bf/overview
Verdict:
Malicious
Labled as:
Win/malicious_confidence_100%
Link:
https://www.hybrid-analysis.com/sample/a91fbd2b52512693c51c92da3cf1541ac39863e647dcc681457f88117fee289b
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.
Verdict:
Suspicious
Link:
https://analyze.intezer.com/analyses/40b1e57d-8651-42a4-92fb-1243818de035
Result
Threat name:
Remcos
Create hunting rule
Detection:
malicious
Classification:
troj.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1281058
Signature
.NET source code contains potential unpacker
.NET source code contains very large array initializations
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Drops PE files with benign system names
Found malware configuration
Initial sample is a PE file and has a suspicious name
Injects a PE file into a foreign processes
Machine Learning detection for dropped file
Machine Learning detection for sample
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Sample uses string decryption to hide its real strings
Sigma detected: Schedule system process
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Uses cmd line tools excessively to alter registry or file data
Uses dynamic DNS services
Uses schtasks.exe or at.exe to add and modify task schedules
Writes to foreign memory regions
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: 1281058 Sample: July_shipment_order#5653453... Startdate: 27/07/2023 Architecture: WINDOWS Score: 100 68 Found malware configuration 2->68 70 Malicious sample detected (through community Yara rule) 2->70 72 Antivirus detection for URL or domain 2->72 74 13 other signatures 2->74 8 July_shipment_order#56534536_document_file_view.exe 1 7 2->8         started        12 svchost.exe 2 2->12         started        14 svchost.exe 2 2->14         started        16 svchost.exe 2 2->16         started        process3 dnsIp4 58 C:\Users\user\AppData\Roaming\svchost.exe, PE32+ 8->58 dropped 60 July_shipment_orde...t_file_view.exe.log, CSV 8->60 dropped 84 Drops PE files with benign system names 8->84 19 cmd.exe 1 8->19         started        21 cmd.exe 1 8->21         started        86 Multi AV Scanner detection for dropped file 12->86 88 Machine Learning detection for dropped file 12->88 90 Uses cmd line tools excessively to alter registry or file data 12->90 24 csc.exe 12->24         started        26 ngentask.exe 12->26         started        36 14 other processes 12->36 92 Writes to foreign memory regions 14->92 94 Injects a PE file into a foreign processes 14->94 28 aspnet_state.exe 14->28         started        30 SMSvcHost.exe 14->30         started        32 jsc.exe 14->32         started        62 192.168.2.1 unknown unknown 16->62 34 dfsvc.exe 16->34         started        file5 signatures6 process7 signatures8 38 svchost.exe 3 19->38         started        41 conhost.exe 19->41         started        43 timeout.exe 1 19->43         started        76 Uses schtasks.exe or at.exe to add and modify task schedules 21->76 45 conhost.exe 21->45         started        47 schtasks.exe 1 21->47         started        process9 signatures10 78 Uses cmd line tools excessively to alter registry or file data 38->78 80 Writes to foreign memory regions 38->80 82 Injects a PE file into a foreign processes 38->82 49 AddInProcess32.exe 3 13 38->49         started        52 MSBuild.exe 38->52         started        54 cvtres.exe 38->54         started        56 11 other processes 38->56 process11 dnsIp12 64 microsoftwindowsvanced.duckdns.org 172.96.14.27, 49182, 49692 UNREAL-SERVERSUS Canada 49->64 66 geoplugin.net 178.237.33.50, 49693, 80 ATOM86-ASATOM86NL Netherlands 49->66
Detection:
remcos
Create hunting rule
Link:
https://mwdb.cert.pl/sample/a91fbd2b52512693c51c92da3cf1541ac39863e647dcc681457f88117fee289b/
Threat name:
ByteCode-MSIL.Trojan.Remcos
Create hunting rule
Status:
Malicious
First seen:
2023-07-27 05:07:25 UTC
File Type:
PE+ (.Net Exe)
Extracted files:
2
AV detection:
21 of 23 (91.30%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=vep32k2sketjhri4slndz4kudlbzqy7gi7omnakfp6ebc77ofcnq._file
Verdict:
malicious
Similar samples:
2bc364e692d47380f0e7bf27be5f0ec731195552ff3b8951bd5409f18fa803e7
RemcosRAT
62b37c429508fb7daf5268815ecd5ab7dd0f9aef7def1ffcc77f0eccbdb0fead
RemcosRAT
9cd9994b0c9c1e3c8e2cc7892d3d411061d006fd01a1f62c364076f4466deb0e
RemcosRAT
ab8674f0baf9cc51bdb639626664be6917a3682aa7ea25b7c233b673800513b0
RemcosRAT
bbb8fbbb20bebbfaa7b103359319cd5e20b967748c079303f396f236a92e00b3
RemcosRAT
c030774b49428397cadf15f5a7b08e8fcfde4920705b0790b8b83cdcb3456956
RemcosRAT
+ 20 additional samples on MalwareBazaar
Result
Malware family:
remcos
Create hunting rule
Score:
  10/10
Tags:
family:remcos botnet:update727 collection persistence rat
Link:
https://tria.ge/reports/230727-l99pzaea52/
Behaviour
Creates scheduled task(s)
Delays execution with timeout.exe
Modifies registry class
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Uses Task Scheduler COM API
Enumerates physical storage devices
Program crash
Drops file in Windows directory
Suspicious use of SetThreadContext
Accesses Microsoft Outlook accounts
Adds Run key to start application
Checks computer location settings
Executes dropped EXE
Loads dropped DLL
Uses the VBS compiler for execution
NirSoft MailPassView
NirSoft WebBrowserPassView
Nirsoft
Remcos
Malware Config
C2 Extraction:
microsoftwindowsvanced.duckdns.org:49182
Unpacked files
SH256 hash:
a91fbd2b52512693c51c92da3cf1541ac39863e647dcc681457f88117fee289b
MD5 hash:
f30b5071b8514c7d551d5018fecbe7f2
SHA1 hash:
2e65b1d5b8a5da2aae82c3a5faca2106bce6b630
Link:
https://www.unpac.me/results/5e27d867-af6e-4890-8249-5fa81294bcf6/
Malware family:
Remcos
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/a91fbd2b5251/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/a91fbd2b52512693c51c92da3cf1541ac39863e647dcc681457f88117fee289b

File information

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

Malspam

RemcosRAT

Executable exe a91fbd2b52512693c51c92da3cf1541ac39863e647dcc681457f88117fee289b

(this sample)

  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/434754/

Comments