MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 8f35ae02b5ba88554c9d41fb1cd9aaa916a8136fa8d442dcc894ac46f593d7c0. 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 3 File information Comments 1
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 8f35ae02b5ba88554c9d41fb1cd9aaa916a8136fa8d442dcc894ac46f593d7c0
SHA3-384 hash: 75dbde31a25e347d063f3b7fda85aa6191562c1bab772c0752d203f5c052bfc4572549c46b7efe459a728a173de53fc1
SHA1 hash: 7501a498fdec9ba90538b1907fa1222afeecc6d4
MD5 hash: d33852151bd28a38824c6269a051c818
humanhash: shade-pasta-cardinal-sink
File name:d33852151bd28a38824c6269a051c818
Download: download sample
Signature RemcosRAT
Create hunting rule
File size:1'117'184 bytes
First seen:2023-02-08 00:43:56 UTC
Last seen:2023-02-08 02:35:15 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'748 x AgentTesla, 19'642 x Formbook, 12'245 x SnakeKeylogger)
ssdeep 24576:3Q7OkPkU7TooG8uXJmGHTxsg01Q6w3FVTANfUrn+WawxO5dmZ:A7pk6T9G8uIGzx01SVTAR0TsE
TLSH T13D35230E6FF9DB31C9586BB818306C60037EAC297122F32D1D96B1DB6C3BB545611AA7
TrID 63.0% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
11.2% (.SCR) Windows screen saver (13097/50/3)
9.0% (.EXE) Win64 Executable (generic) (10523/12/4)
5.6% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
3.8% (.EXE) Win32 Executable (generic) (4505/5/1)
Reporter zbetcheckin
Tags:32 exe RemcosRAT

Intelligence

File Origin
# of uploads :
2
# of downloads :
210
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
remcos
Create hunting rule
ID:
1
File name:
Compiled.xlsx
Verdict:
Malicious activity
Analysis date:
2023-02-07 15:01:01 UTC
Tags:
exploit cve-2017-11882 loader rat remcos
Link:
https://app.any.run/tasks/708d234a-e627-4d66-b578-cb47ba5339cc

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/361693/
Detection(s):
SecuriteInfo.com.Trojan.PackedNET.1822.12601.2576.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Sending a custom TCP request
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
packed
Link:
https://www.filescan.io/uploads/63e2f05389bd67c10fdd1fc1/reports/f66a380e-5358-4375-a5c2-992bd29763e4/overview
Verdict:
Malicious
Labled as:
Win/malicious_confidence_100%
Link:
https://www.hybrid-analysis.com/sample/8f35ae02b5ba88554c9d41fb1cd9aaa916a8136fa8d442dcc894ac46f593d7c0
Result
Verdict:
UNKNOWN
Details
Windows PE Executable
Found a Windows Portable Executable (PE) binary. Depending on context, the presence of a binary is suspicious or malicious.
Verdict:
Unknown
Link:
https://analyze.intezer.com/analyses/cc7c60bc-9870-4011-9cbd-0e285058e178
Result
Threat name:
Remcos
Create hunting rule
Detection:
malicious
Classification:
rans.troj.spyw.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1168332
Signature
.NET source code contains potential unpacker
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
Injects a PE file into a foreign processes
Installs a global keyboard hook
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
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: 801109 Sample: 53YNprm0gm.exe Startdate: 08/02/2023 Architecture: WINDOWS Score: 100 64 Malicious sample detected (through community Yara rule) 2->64 66 Antivirus detection for URL or domain 2->66 68 Multi AV Scanner detection for submitted file 2->68 70 7 other signatures 2->70 8 53YNprm0gm.exe 3 2->8         started        12 ros.exe 2 2->12         started        14 ros.exe 2 2->14         started        16 ros.exe 2 2->16         started        process3 file4 44 C:\Users\user\AppData\...\53YNprm0gm.exe.log, ASCII 8->44 dropped 76 Contains functionality to bypass UAC (CMSTPLUA) 8->76 78 Contains functionalty to change the wallpaper 8->78 80 Contains functionality to steal Chrome passwords or cookies 8->80 84 2 other signatures 8->84 18 53YNprm0gm.exe 2 3 8->18         started        82 Injects a PE file into a foreign processes 12->82 21 ros.exe 14 12->21         started        25 ros.exe 12->25         started        27 ros.exe 14->27         started        29 ros.exe 16->29         started        signatures5 process6 dnsIp7 40 C:\Users\user\AppData\Roaming\ros.exe, PE32 18->40 dropped 42 C:\Users\user\...\ros.exe:Zone.Identifier, ASCII 18->42 dropped 31 ros.exe 3 18->31         started        52 richardskoug34.ddns.net 21->52 54 geoplugin.net 21->54 74 Installs a global keyboard hook 21->74 56 richardskoug34.ddns.net 27->56 58 geoplugin.net 27->58 60 richardskoug34.ddns.net 29->60 62 geoplugin.net 29->62 file8 signatures9 process10 signatures11 86 Multi AV Scanner detection for dropped file 31->86 88 Machine Learning detection for dropped file 31->88 90 Injects a PE file into a foreign processes 31->90 34 ros.exe 2 15 31->34         started        38 ros.exe 31->38         started        process12 dnsIp13 46 richardskoug34.ddns.net 185.246.220.33, 49700, 49702, 49704 LVLT-10753US Germany 34->46 48 geoplugin.net 178.237.33.50, 49701, 49703, 49705 ATOM86-ASATOM86NL Netherlands 34->48 50 192.168.2.1 unknown unknown 34->50 72 Installs a global keyboard hook 34->72 signatures14
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/8f35ae02b5ba88554c9d41fb1cd9aaa916a8136fa8d442dcc894ac46f593d7c0/
Threat name:
ByteCode-MSIL.Spyware.Negasteal
Create hunting rule
Status:
Malicious
First seen:
2023-02-07 18:18:50 UTC
File Type:
PE (.Net Exe)
Extracted files:
8
AV detection:
19 of 26 (73.08%)
Threat level:
  2/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=r4224avvxkefkte5ih5rzwnkvelkqe3pvdkefxgisswen5mt27aa._file
Result
Malware family:
remcos
Create hunting rule
Score:
  10/10
Tags:
family:remcos botnet:wazy-host 2023 persistence rat
Link:
https://tria.ge/reports/230208-a3gvtsfg9v/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Suspicious use of SetThreadContext
Adds Run key to start application
Checks computer location settings
Executes dropped EXE
Loads dropped DLL
Remcos
Malware Config
C2 Extraction:
richardskoug34.ddns.net:7665
Unpacked files
SH256 hash:
6384dabeffdc0afc3d7f1e18d0033e7482790c0aa2f1f2af7cc39eb81795d0ef
MD5 hash:
f759d70f3bbee3865d9ba45b70c59bea
SHA1 hash:
f07ca29866cf8b0d92f18904860c40a284a5f550
Link:
https://www.unpac.me/results/9bcec72b-e444-4649-8bcd-36f47d756b44/
SH256 hash:
4e41839d5c263e6134c8a3b134a721506dc572c592ae719a16f1e0c9c3b9202c
MD5 hash:
f6c444a8830c498be584ef29f32c21c6
SHA1 hash:
ca30d289234c0e5d36aa6f0b375263eb367c2e63
Link:
https://www.unpac.me/results/9bcec72b-e444-4649-8bcd-36f47d756b44/
SH256 hash:
c6cd8a8ea59f5392cbd10bc4e511a406e3c652e08cfa650fc3a0371ea5c56c2b
MD5 hash:
25a4409235e1956f9ab16b92dd192a8d
SHA1 hash:
bb01498e1ab6c9507142f0cc36115d6846a64b30
Link:
https://www.unpac.me/results/9bcec72b-e444-4649-8bcd-36f47d756b44/
SH256 hash:
15affadbd57e609f1fb002554e3d26f9e364007034b5c481d1a8d3998318fca2
MD5 hash:
818b480ae76f761505ba4eb2039b0367
SHA1 hash:
5fbb448785d7c74dc158fa07d4f73c33fd821422
Detections:
Remcos
Create hunting rule
win_remcos_auto
Create hunting rule
Link:
https://www.unpac.me/results/9bcec72b-e444-4649-8bcd-36f47d756b44/
Parent samples :
a06b22bc855434e422e2361ed4e07e88c5958b5bebecc34020c3c011b0ce03b2
8f35ae02b5ba88554c9d41fb1cd9aaa916a8136fa8d442dcc894ac46f593d7c0
da54774eea2461e908c742776fbf45b1fd5a493a847e2572762ad0cd6f3c8277
SH256 hash:
e386840537170219177c2bb3404f4c7bd9da1a2d53cdf2ae1e857c3b19628a29
MD5 hash:
d170ab8c03b9c37d5be449454db131d2
SHA1 hash:
2031b6754a65d21b47dd11a34fee86f048d6048d
Link:
https://www.unpac.me/results/9bcec72b-e444-4649-8bcd-36f47d756b44/
SH256 hash:
8f35ae02b5ba88554c9d41fb1cd9aaa916a8136fa8d442dcc894ac46f593d7c0
MD5 hash:
d33852151bd28a38824c6269a051c818
SHA1 hash:
7501a498fdec9ba90538b1907fa1222afeecc6d4
Link:
https://www.unpac.me/results/9bcec72b-e444-4649-8bcd-36f47d756b44/
Malware family:
Remcos
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/8f35ae02b5ba/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Trojan
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/8f35ae02b5ba88554c9d41fb1cd9aaa916a8136fa8d442dcc894ac46f593d7c0

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:pdb_YARAify
Create hunting rule
Author:@wowabiy314
Description:PDB
Rule name:pe_imphash
Create hunting rule
Rule name:Skystars_Malware_Imphash
Create hunting rule
Author:Skystars LightDefender
Description:imphash

File information

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

Web download

RemcosRAT

Executable exe 8f35ae02b5ba88554c9d41fb1cd9aaa916a8136fa8d442dcc894ac46f593d7c0

(this sample)

  
Delivery method
Distributed via web download
  
URLhaus
https://urlhaus.abuse.ch/url/2533596/
Cape
Cape
https://www.capesandbox.com/analysis/361693/

Comments


Avatar
zbet commented on 2023-02-08 00:44:10 UTC

url : hxxp://109.206.240.64/WSS.exe