MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 15851690d3cb99d95e82bb47d3f31db71688c69dd50b0a8367e97aa3b501b637. 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: 11


Intelligence 11 IOCs YARA 7 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 15851690d3cb99d95e82bb47d3f31db71688c69dd50b0a8367e97aa3b501b637
SHA3-384 hash: 7ab681c7c9a693ae17306be2a00b17668d6dc1737969181bbf4f7dbead0590a19be8f8f7e1dcc391c3facdfd0b411124
SHA1 hash: 7c05b71120cd703685fe19d5f8969ec73ae340bd
MD5 hash: f41bae930735486a5456bb2ec5b22bd7
humanhash: foxtrot-oxygen-montana-illinois
File name:f41bae930735486a5456bb2ec5b22bd7.exe
Download: download sample
Signature RemcosRAT
Create hunting rule
File size:717'528 bytes
First seen:2021-09-13 17:27:20 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash 6204ac5c7f2e83e9898645118ad9e836 (4 x RemcosRAT)
ssdeep 12288:kiouGvscRqW8FvYKKCPOxoafEy+PlsqjGhH/LGE9P:OuEscl8FJKCPOdMy+fj+HTGEx
Threatray 1'107 similar samples on MalwareBazaar
TLSH T19BE47D51D6C0687DE1B93A7D0CEBB3195012AF922468ADCF2BF8B5585A3C3897C34787
dhash icon 030343434308d8d0 (4 x RemcosRAT)
Reporter abuse_ch
Tags:exe RAT RemcosRAT

Intelligence

File Origin
# of uploads :
1
# of downloads :
133
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
f41bae930735486a5456bb2ec5b22bd7.exe
Verdict:
Malicious activity
Analysis date:
2021-09-13 17:30:00 UTC
Tags:
installer trojan keylogger
Link:
https://app.any.run/tasks/ac076aa3-a513-44f2-93d5-0fac394aa8c0

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/187529/
Detection(s):
PUA.Win.Adware.Slugin-6840354-0
Create hunting rule

Result
Verdict:
Clean
Maliciousness:

Behaviour
Creating a window
DNS request
Connection attempt
Sending an HTTP GET request
Creating a file
Sending a custom TCP request
Deleting a recently created file
Replacing files
Verdict:
Likely Malicious
Threat level:
  7.5/10
Confidence:
100%
Tags:
greyware keylogger overlay packed
Link:
https://www.filescan.io/uploads/617503efa9d585e6d5370a4f/reports/94a89cf5-c20d-4034-bad3-70cc2435beb5/overview
Malware family:
REMCOS
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/694c00c7-2dd6-402a-ae79-caab0445bea9
Result
Threat name:
Remcos
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/850034
Signature
Contains functionality to inject code into remote processes
Contains functionality to steal Firefox passwords or cookies
Creates a thread in another existing process (thread injection)
Delayed program exit found
Detected Remcos RAT
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
Uses dynamic DNS services
Writes to foreign memory regions
Yara detected Remcos RAT
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 482466 Sample: IRCeN4WRoN.exe Startdate: 13/09/2021 Architecture: WINDOWS Score: 100 44 bustabantu0817.ddnsgeek.com 2->44 66 Malicious sample detected (through community Yara rule) 2->66 68 Multi AV Scanner detection for submitted file 2->68 70 Detected Remcos RAT 2->70 72 3 other signatures 2->72 9 IRCeN4WRoN.exe 1 22 2->9         started        14 Hrtugfp.exe 15 2->14         started        16 Hrtugfp.exe 16 2->16         started        signatures3 process4 dnsIp5 52 onedrive.live.com 9->52 54 aso3aa.am.files.1drv.com 9->54 56 am-files.fe.1drv.com 9->56 42 C:\Users\Public\Libraries\...\Hrtugfp.exe, PE32 9->42 dropped 80 Writes to foreign memory regions 9->80 82 Creates a thread in another existing process (thread injection) 9->82 84 Injects a PE file into a foreign processes 9->84 18 dialer.exe 2 3 9->18         started        22 cmd.exe 1 9->22         started        24 cmd.exe 1 9->24         started        58 onedrive.live.com 14->58 62 2 other IPs or domains 14->62 86 Multi AV Scanner detection for dropped file 14->86 88 Machine Learning detection for dropped file 14->88 26 secinit.exe 14->26         started        60 onedrive.live.com 16->60 64 2 other IPs or domains 16->64 28 dialer.exe 16->28         started        file6 signatures7 process8 dnsIp9 46 bustabantu0817.hopto.org 79.134.225.87, 7575 FINK-TELECOM-SERVICESCH Switzerland 18->46 48 bustabantu0817.duckdns.org 18->48 50 bustabantu0817.ddnsgeek.com 18->50 74 Contains functionality to inject code into remote processes 18->74 76 Contains functionality to steal Firefox passwords or cookies 18->76 78 Delayed program exit found 18->78 30 reg.exe 1 22->30         started        32 conhost.exe 22->32         started        34 cmd.exe 1 24->34         started        36 conhost.exe 24->36         started        signatures10 process11 process12 38 conhost.exe 30->38         started        40 conhost.exe 34->40         started       
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/15851690d3cb99d95e82bb47d3f31db71688c69dd50b0a8367e97aa3b501b637/
Threat name:
Win32.Backdoor.Remcos
Create hunting rule
Status:
Malicious
First seen:
2021-09-04 07:04:00 UTC
AV detection:
22 of 27 (81.48%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=cwcrnegtzom5sxucxnd5h4y5w4lirru52ufqva3h5f5khnibwy3q._file
Verdict:
malicious
Label(s):
remcos
Create hunting rule
Similar samples:
04f483018f53c35976cfd9c4b5191279761a351b3e135a70ae9c5c2b53be154b
RemcosRAT
204806f363e25b8caab19fade1152cbdef6d19a2ee0f122ce2a2aa3949154f1d
RemcosRAT
62960caf3d007638be89631e502733f30c42a9ba0269e8c00457c9dec10e9136
RemcosRAT
6a96d22dec9171b154bb1a94c68fa02dda51713709dad161681a759f64cc3014
RemcosRAT
7eb677c1c5c60d34da90cab2b4ea019c500b5c3db6964cc14849dbe2f9f5fa30
RemcosRAT
8cb9b0ac073c398ffc0147a1a84ffa9c2db217df67c5a89f34f4a5fb12be7cc3
RemcosRAT
b0f43b627353f91afa5e4a9c5eea655f5375e497933a6e37c3c0f8a5a29a2889
RemcosRAT
b9384216a5aea20cd398e51c6549bb84d6b252f3fde114010e3cc0c60b1e2b13
RemcosRAT
bb63c61554ccc2caa79eec3705c3e4ce41626e88f375a8a1bc5b514e489b0f04
RemcosRAT
dc1bb96ddee60e15d3344fc4b0413634a54974ef9e854628157800c9d695f028
RemcosRAT
+ 1'097 additional samples on MalwareBazaar
Result
Malware family:
remcos
Create hunting rule
Score:
  10/10
Tags:
family:remcos botnet:new-yak-0817 persistence rat
Link:
https://tria.ge/reports/210913-v1z9lsebf4/
Behaviour
Modifies registry key
Suspicious use of WriteProcessMemory
Adds Run key to start application
Remcos
Malware Config
C2 Extraction:
bustabantu0817.hopto.org:7575
bustabantu0817.duckdns.org:7575
bustabantu0817.ddnsgeek.com:7575
Unpacked files
SH256 hash:
4e1202f3e7e04b0b3ca1df164bf5381f24063c142317e774d4e5d88b2b3ac744
MD5 hash:
aa23dee2c34813d67fe9c67ec784782a
SHA1 hash:
10b2e7af7cb9d6f852e6d607875a8c9613538930
Link:
https://www.unpac.me/results/aa4798e8-a94a-4afd-8909-be5e74f2dac8/
SH256 hash:
15851690d3cb99d95e82bb47d3f31db71688c69dd50b0a8367e97aa3b501b637
MD5 hash:
f41bae930735486a5456bb2ec5b22bd7
SHA1 hash:
7c05b71120cd703685fe19d5f8969ec73ae340bd
Link:
https://www.unpac.me/results/aa4798e8-a94a-4afd-8909-be5e74f2dac8/
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/15851690d3cb/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Remcos
Score:
0.90
Link:
https://yomi.yoroi.company/submissions/15851690d3cb99d95e82bb47d3f31db71688c69dd50b0a8367e97aa3b501b637

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:ach_RemcosRAT
Create hunting rule
Author:abuse.ch
Rule name:INDICATOR_KB_CERT_0be3f393d1ef0272aed0e2319c1b5dd0
Create hunting rule
Author:ditekSHen
Description:Detects executables signed with stolen, revoked or invalid certificates
Rule name:INDICATOR_SUSPICIOUS_EXE_UACBypass_EnvVarScheduledTasks
Create hunting rule
Author:ditekSHen
Description:detects Windows exceutables potentially bypassing UAC (ab)using Environment Variables in Scheduled Tasks
Rule name:INDICATOR_SUSPICIOUS_EXE_UACBypass_EventViewer
Create hunting rule
Author:ditekSHen
Description:detects Windows exceutables potentially bypassing UAC using eventvwr.exe
Rule name:Remcos
Create hunting rule
Author:kevoreilly
Description:Remcos Payload
Rule name:remcos_rat
Create hunting rule
Author:jeFF0Falltrades
Rule name:REMCOS_RAT_variants
Create hunting rule

File information

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

Cape
Cape
https://www.capesandbox.com/analysis/187529/

Comments