MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 77f413c1323f7953e51210235dbf3051e45efed9c2bd8a7984f4a257d5fc38a5. 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 4 File information Comments 1
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 77f413c1323f7953e51210235dbf3051e45efed9c2bd8a7984f4a257d5fc38a5
SHA3-384 hash: 0cbd5c868506e3a45eb8bd02aae9826839534435df318dee152797a0025629f53e3fd1056c1dd60d8e648d4f1fa703b6
SHA1 hash: ca2ba05f1110d6c6b76841093069447621e7c77d
MD5 hash: 841f2ea46f3c391a7d41eeb64d0f9c4c
humanhash: lamp-five-bakerloo-delaware
File name:841f2ea46f3c391a7d41eeb64d0f9c4c
Download: download sample
Signature RemcosRAT
Create hunting rule
File size:542'720 bytes
First seen:2023-09-06 04:17:45 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'744 x AgentTesla, 19'608 x Formbook, 12'242 x SnakeKeylogger)
ssdeep 12288:sg/Hc/DJGWTLL4TgFDrkY8OjxgmYEdI7PcpqjnMGwkiOaUv6:sg/8/DDLkM2Y8hmYESzcpqjOUi
Threatray 371 similar samples on MalwareBazaar
TLSH T1B9B4F144A7E44E36E3BE433991582215D73114B38A36D618BECE359B9F3EB104B07E6B
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)
File icon (PE):PE icon
dhash icon 0000000000000000 (872 x AgentTesla, 496 x Formbook, 296 x RedLineStealer)
Reporter zbetcheckin
Tags:32 exe RemcosRAT

Intelligence

File Origin
# of uploads :
1
# of downloads :
284
Origin country :
FR FR
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
841f2ea46f3c391a7d41eeb64d0f9c4c
Verdict:
Malicious activity
Analysis date:
2023-09-06 04:18:42 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/11c7ef04-d3d3-441e-b46d-aa12a0534ab9

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/446440/
Detection(s):
Porcupine.Malware.58887.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Searching for synchronization primitives
Launching the default Windows debugger (dwwin.exe)
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
packed phishing
Link:
https://www.filescan.io/uploads/64f7fd7c67511af1a1b51f01/reports/0bf698bc-74b5-4f0a-87af-efec997ab6ca/overview
Verdict:
Malicious
Labled as:
Win/malicious_confidence_100%
Link:
https://www.hybrid-analysis.com/sample/77f413c1323f7953e51210235dbf3051e45efed9c2bd8a7984f4a257d5fc38a5
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/63738f98-0208-4002-aa7b-928ca64de097
Result
Threat name:
Remcos
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1304013
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
Contains functionality to capture and log keystrokes
Contains functionality to detect virtual machines (IN, VMware)
Contains functionality to inject code into remote processes
Contains functionality to modify clipboard data
Contains functionality to steal Chrome passwords or cookies
Contains functionality to steal Firefox passwords or cookies
Creates an autostart registry key pointing to binary in C:\Windows
Detected Remcos RAT
Drops executables to the windows directory (C:\Windows) and starts them
Found malware configuration
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 domain / URL
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Uses dynamic DNS services
Uses ping.exe to check the status of other devices and networks
Uses ping.exe to sleep
Yara detected AntiVM3
Yara detected Remcos RAT
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 1304013 Sample: rS77hcjh1P.exe Startdate: 06/09/2023 Architecture: WINDOWS Score: 100 57 Multi AV Scanner detection for domain / URL 2->57 59 Found malware configuration 2->59 61 Malicious sample detected (through community Yara rule) 2->61 63 13 other signatures 2->63 10 rS77hcjh1P.exe 3 2->10         started        13 Windows Session Start.exe 2 2->13         started        15 Windows Session Start.exe 2 2->15         started        process3 signatures4 73 Detected Remcos RAT 10->73 75 Contains functionality to detect virtual machines (IN, VMware) 10->75 77 Contains functionality to steal Chrome passwords or cookies 10->77 79 5 other signatures 10->79 17 rS77hcjh1P.exe 2 5 10->17         started        21 Windows Session Start.exe 13->21         started        23 Windows Session Start.exe 13->23         started        25 Windows Session Start.exe 15->25         started        process5 file6 47 C:\Windows\...\Windows Session Start.exe, PE32 17->47 dropped 65 Detected Remcos RAT 17->65 67 Tries to detect sandboxes and other dynamic analysis tools (process name or module or function) 17->67 69 Creates an autostart registry key pointing to binary in C:\Windows 17->69 27 cmd.exe 1 17->27         started        71 Drops executables to the windows directory (C:\Windows) and starts them 21->71 31 Windows Session Start.exe 21->31         started        signatures7 process8 dnsIp9 53 192.168.2.1 unknown unknown 27->53 85 Uses ping.exe to sleep 27->85 87 Uses ping.exe to check the status of other devices and networks 27->87 33 Windows Session Start.exe 3 27->33         started        36 PING.EXE 1 27->36         started        39 conhost.exe 27->39         started        89 Detected Remcos RAT 31->89 signatures10 process11 dnsIp12 55 Detected Remcos RAT 33->55 41 Windows Session Start.exe 1 4 33->41         started        49 127.0.0.1 unknown unknown 36->49 signatures13 process14 dnsIp15 51 ascoitaliasasummer.duckdns.org 194.147.140.199, 3030, 49729, 49730 PTPEU unknown 41->51 81 Detected Remcos RAT 41->81 83 Installs a global keyboard hook 41->83 45 iexplore.exe 41->45         started        signatures16 process17
Detection:
remcos
Create hunting rule
Link:
https://mwdb.cert.pl/sample/77f413c1323f7953e51210235dbf3051e45efed9c2bd8a7984f4a257d5fc38a5/
Threat name:
Win32.Trojan.Negasteal
Create hunting rule
Status:
Malicious
First seen:
2023-09-06 03:47:23 UTC
File Type:
PE (.Net Exe)
Extracted files:
18
AV detection:
21 of 38 (55.26%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=o72bhqjsh54vhziscarv3pzqkhsf57wzyk6yu6me6srfpvp4hcsq._file
Verdict:
malicious
Label(s):
remcos
Create hunting rule
Similar samples:
3ce66a4e58b435bcd38a1272823e97f7beac54d679ff0af1224187f032360e87
RemcosRAT
9acd14f51f44097e8f00ff0bf413ffdd856c2d7d762064843040a2cde4df3f60
RemcosRAT
a1e66473cfdd393d62a203c1f16190106881f1fe6a671081e232f6ec1ab191fa
RemcosRAT
c851749fd6c9fa19293d8ee2c5b45b3dc8561115ddfe7166fbaefcb9b353b7c4
RemcosRAT
ce4962d3126223b4bd68704159cbdc7479fb2df4263fb9f3d57492e770b74a94
RemcosRAT
d061bccf32fbb8184f85439a17e4fcece7f816ea93681a80c7506e159f043cbf
RemcosRAT
d72b99be6c28cec8f3672df1ef58a69cb08524e181fb7ba53edbdab73f3ccf44
RemcosRAT
f79d3098bfb090b6aaa390943e247178f3acff7c8214467df000cd3f102a2382
RemcosRAT
+ 361 additional samples on MalwareBazaar
Result
Malware family:
remcos
Create hunting rule
Score:
  10/10
Tags:
family:remcos botnet:merdeka brand:microsoft persistence phishing rat
Link:
https://tria.ge/reports/230906-ewyl8adb6v/
Behaviour
Enumerates system info in registry
Modifies Internet Explorer settings
Runs ping.exe
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: NtCreateUserProcessBlockNonMicrosoftBinary
Suspicious use of AdjustPrivilegeToken
Suspicious use of FindShellTrayWindow
Suspicious use of SendNotifyMessage
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Drops file in Windows directory
Detected potential entity reuse from brand microsoft.
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:
ascoitaliasasummer.duckdns.org:3030
Unpacked files
SH256 hash:
534656a485853ac919379f5ec56ecd68c3689b8ed1ca44aab338f6368739d873
MD5 hash:
c8d01eeeae6e6662800580fc55f3facf
SHA1 hash:
adc54adb97cacee294b45a70f9a50e2d3625fba2
Link:
https://www.unpac.me/results/07e10b5f-0af7-42b3-b495-aeb99e00142a/
SH256 hash:
301f9abf5212872b99476c7749f886e8f29dd75516216f2d9c887e5648972e06
MD5 hash:
245a540ade9850e3a8e4637c77c0b14d
SHA1 hash:
5e4dc0b8b363cedd8ceae5e897eda8a09ddca9fa
Detections:
Remcos
Create hunting rule
win_remcos_auto
Create hunting rule
win_remcos_g0
Create hunting rule
Link:
https://www.unpac.me/results/07e10b5f-0af7-42b3-b495-aeb99e00142a/
SH256 hash:
f61d2bf9d06b6be90c61b0c23e3950970fe21cdc30c4478a6b5de16bb37ad486
MD5 hash:
1e10562db5a494b54896b6d75f585a8d
SHA1 hash:
55194bb10f5b83193df3375feb4f3aba15c79cd2
Link:
https://www.unpac.me/results/07e10b5f-0af7-42b3-b495-aeb99e00142a/
SH256 hash:
249104adf5d168543886a7eaebfea594fa54d63e32030a9217c377339c00ac3f
MD5 hash:
30440b192132e783566d530f15d2e69f
SHA1 hash:
466f05e6593bc766e5ce235b46d2f9250a1a2f4c
Link:
https://www.unpac.me/results/07e10b5f-0af7-42b3-b495-aeb99e00142a/
SH256 hash:
77f413c1323f7953e51210235dbf3051e45efed9c2bd8a7984f4a257d5fc38a5
MD5 hash:
841f2ea46f3c391a7d41eeb64d0f9c4c
SHA1 hash:
ca2ba05f1110d6c6b76841093069447621e7c77d
Link:
https://www.unpac.me/results/07e10b5f-0af7-42b3-b495-aeb99e00142a/
Malware family:
Remcos
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/77f413c1323f/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/77f413c1323f7953e51210235dbf3051e45efed9c2bd8a7984f4a257d5fc38a5

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:NET
Create hunting rule
Author:malware-lu
Rule name:NETexecutableMicrosoft
Create hunting rule
Author:malware-lu
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 77f413c1323f7953e51210235dbf3051e45efed9c2bd8a7984f4a257d5fc38a5

(this sample)

  
Delivery method
Distributed via web download
  
URLhaus
https://urlhaus.abuse.ch/url/2709940/
Cape
Cape
https://www.capesandbox.com/analysis/446440/

Comments


Avatar
zbet commented on 2023-09-06 04:17:46 UTC

url : hxxp://185.28.39.17:7777/185.28.39.18/chungzx.exe