MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 c0478b1a92b58fbec646563cfe5d6ce2aaccfdf3a486911b0b82f3878b54833b. 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: 16


Intelligence 16 IOCs YARA 7 File information Comments
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SHA256 hash: c0478b1a92b58fbec646563cfe5d6ce2aaccfdf3a486911b0b82f3878b54833b
SHA3-384 hash: 660d0358664a6206056f8bce5818a0cf16a10ce404bb3c6b0e78164cd7175a5d4825049291c94c44e10d0f5a18ed6369
SHA1 hash: e4f2a8e6e81032d02b282feca821715d63b70bff
MD5 hash: 74233fc5fb8594753a68f6699fd84b6e
humanhash: ack-sink-saturn-nevada
File name:zzzzzzzzzzzzzzzzzzzzzzz......exe
Download: download sample
Signature RemcosRAT
Create hunting rule
File size:765'952 bytes
First seen:2022-07-01 07:22:41 UTC
Last seen:2022-07-11 09:03:06 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'652 x AgentTesla, 19'463 x Formbook, 12'204 x SnakeKeylogger)
ssdeep 12288:BqsS0gRo7Q6HKCtBwzNRljwyYwyylbWsmdxy+1zGF5i6M1aSJO5EgJsnP7wv:gsVgRoM6HKgizNLMyTyyZWsiy+1iDiPE
TLSH T195F4237BA4A64EE6D27373B2A41AA17077BD5D208480D7B3A46E7EC90D4538C48D1FEC
TrID 72.5% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
10.4% (.EXE) Win64 Executable (generic) (10523/12/4)
6.5% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
4.4% (.EXE) Win32 Executable (generic) (4505/5/1)
2.0% (.EXE) OS/2 Executable (generic) (2029/13)
File icon (PE):PE icon
dhash icon 86cc78b16cc69686 (1 x RemcosRAT)
Reporter GovCERT_CH
Tags:exe RemcosRAT

Intelligence

File Origin
# of uploads :
4
# of downloads :
247
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
remcos
Create hunting rule
ID:
1
File name:
c0478b1a92b58fbec646563cfe5d6ce2aaccfdf3a486911b0b82f3878b54833b.zip
Verdict:
Malicious activity
Analysis date:
2022-07-01 08:39:56 UTC
Tags:
rat remcos keylogger
Link:
https://app.any.run/tasks/cea25dcd-c8bf-4b70-8ee9-cc648526706a

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/284791/
Detection(s):
SecuriteInfo.com.Trojan.PackedNET.1407.9944.21334.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Сreating synchronization primitives
Launching a process
Creating a process with a hidden window
Sending a custom TCP request
Creating a file in the %AppData% subdirectories
Creating a file
DNS request
Sending an HTTP GET request
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Query of malicious DNS domain
Sending a TCP request to an infection source
Unauthorized injection to a system process
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
obfuscated packed
Link:
https://www.filescan.io/uploads/62bea0d782a67b6740e442b6/reports/57598ceb-9359-478e-845f-927b9cd1f84d/overview
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.
Malware family:
REMCOS
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/a5c6501a-6a2e-4b63-bcbf-d779a4e00e8a
Result
Threat name:
Remcos
Create hunting rule
Detection:
malicious
Classification:
rans.troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1023046
Signature
.NET source code contains potential unpacker
.NET source code contains very large array initializations
Antivirus / Scanner detection for submitted sample
Antivirus detection for dropped file
C2 URLs / IPs found in malware configuration
Contains functionality to inject code into remote processes
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
Encrypted powershell cmdline option 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 domain / URL
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 Costura Assembly Loader
Yara detected Remcos RAT
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 655537 Sample: zzzzzzzzzzzzzzzzzzzzzzz......exe Startdate: 01/07/2022 Architecture: WINDOWS Score: 100 49 Multi AV Scanner detection for domain / URL 2->49 51 Malicious sample detected (through community Yara rule) 2->51 53 Antivirus detection for dropped file 2->53 55 12 other signatures 2->55 7 zzzzzzzzzzzzzzzzzzzzzzz......exe 1 4 2->7         started        11 eng.exe 1 2->11         started        13 eng.exe 1 2->13         started        process3 file4 31 C:\Users\user\AppData\Roaming\...\eng.exe, PE32 7->31 dropped 33 C:\Users\user\...\eng.exe:Zone.Identifier, ASCII 7->33 dropped 35 C:\...\zzzzzzzzzzzzzzzzzzzzzzz......exe.log, ASCII 7->35 dropped 57 Encrypted powershell cmdline option found 7->57 59 Writes to foreign memory regions 7->59 61 Injects a PE file into a foreign processes 7->61 15 InstallUtil.exe 2 16 7->15         started        19 powershell.exe 15 7->19         started        21 powershell.exe 14 11->21         started        23 powershell.exe 14 13->23         started        signatures5 process6 dnsIp7 37 blackwealth001.duckdns.org 192.3.152.173, 2356, 49775 AS-COLOCROSSINGUS United States 15->37 39 geoplugin.net 178.237.33.50, 49776, 80 ATOM86-ASATOM86NL Netherlands 15->39 41 Contains functionalty to change the wallpaper 15->41 43 Contains functionality to steal Chrome passwords or cookies 15->43 45 Contains functionality to inject code into remote processes 15->45 47 3 other signatures 15->47 25 conhost.exe 19->25         started        27 conhost.exe 21->27         started        29 conhost.exe 23->29         started        signatures8 process9
Detection:
remcos
Create hunting rule
Link:
https://mwdb.cert.pl/sample/c0478b1a92b58fbec646563cfe5d6ce2aaccfdf3a486911b0b82f3878b54833b/
Threat name:
ByteCode-MSIL.Downloader.Seraph
Create hunting rule
Status:
Malicious
First seen:
2022-07-01 06:09:33 UTC
File Type:
PE (.Net Exe)
Extracted files:
20
AV detection:
20 of 40 (50.00%)
Threat level:
  3/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=ybdywguswwh35rsgky6p4xlm4kvmz7ptusdjcgylqlzypc2uqm5q._file
Verdict:
malicious
Label(s):
remcos
Create hunting rule
Result
Malware family:
remcos
Create hunting rule
Score:
  10/10
Tags:
family:remcos botnet:engr heaven persistence rat
Link:
https://tria.ge/reports/220701-h7srwsbcg5/
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
Remcos
Malware Config
C2 Extraction:
blackwealth001.duckdns.org:2356
Unpacked files
SH256 hash:
80499e9ccff9b0389549476372522f1c94adcc33954044f8281171c6f851e799
MD5 hash:
4eda79cf18adad7217e2f57be429e461
SHA1 hash:
a50bc3c4dbe0cbe07fb9e4ca71f055511a730030
Link:
https://www.unpac.me/results/3f0d7257-33fa-4b76-8bab-50abc688217a/
SH256 hash:
9111700110ea0b65c45bf007274551641ae4b777c410f3a852c9511eeac5cf61
MD5 hash:
79d90beea27e1cfd48762c9009e294d3
SHA1 hash:
7a771f3c462733dfe7e95600abe669145def1857
Link:
https://www.unpac.me/results/3f0d7257-33fa-4b76-8bab-50abc688217a/
SH256 hash:
4be8c79f36c2686ae46ff6953ff61047fe20f6b6b485fad5231247eb40880750
MD5 hash:
72dc9ac315f6627a6edbda36a4ff43d3
SHA1 hash:
393cc567355ff27fe1475ca380b38d4d84fccd73
Detections:
win_remcos_auto
Create hunting rule
Link:
https://www.unpac.me/results/3f0d7257-33fa-4b76-8bab-50abc688217a/
Parent samples :
082525150d7aace7e21b3bfb469f86c2e7239593c50cebc143d7f8a66b898b83
c0478b1a92b58fbec646563cfe5d6ce2aaccfdf3a486911b0b82f3878b54833b
SH256 hash:
c0478b1a92b58fbec646563cfe5d6ce2aaccfdf3a486911b0b82f3878b54833b
MD5 hash:
74233fc5fb8594753a68f6699fd84b6e
SHA1 hash:
e4f2a8e6e81032d02b282feca821715d63b70bff
Link:
https://www.unpac.me/results/3f0d7257-33fa-4b76-8bab-50abc688217a/
Malware family:
Remcos
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/c0478b1a92b5/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/c0478b1a92b58fbec646563cfe5d6ce2aaccfdf3a486911b0b82f3878b54833b

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:INDICATOR_EXE_Packed_SmartAssembly
Create hunting rule
Author:ditekSHen
Description:Detects executables packed with SmartAssembly
Rule name:INDICATOR_SUSPICIOUS_EXE_UACBypass_EventViewer
Create hunting rule
Author:ditekSHen
Description:detects Windows exceutables potentially bypassing UAC using eventvwr.exe
Rule name:pe_imphash
Create hunting rule
Rule name:remcos_rat
Create hunting rule
Author:jeFF0Falltrades
Rule name:REMCOS_RAT_variants
Create hunting rule
Rule name:Skystars_Malware_Imphash
Create hunting rule
Author:Skystars LightDefender
Description:imphash
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.

Malspam

RemcosRAT

Executable exe c0478b1a92b58fbec646563cfe5d6ce2aaccfdf3a486911b0b82f3878b54833b

(this sample)

  
Dropped by
RemcosRAT
  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/284791/

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