MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 a3f8ab3315bcd827a53bf5dfe1b55f550a21e40287d15e082e364b870d6a02f8. 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 7 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: a3f8ab3315bcd827a53bf5dfe1b55f550a21e40287d15e082e364b870d6a02f8
SHA3-384 hash: 3047a13970ddf54cc4b9167b610ea75ccc4a177e23d3a416e0395bb6194be2289b5ca87ad081bf2cc7adbb9988812546
SHA1 hash: f0c57e46d0d83e03bc166f018fbb9d819b104c3a
MD5 hash: 26467941a5c46c31d4915abd5e4a2965
humanhash: muppet-vegan-sodium-floor
File name:Covid-19 Data Report Checklist_pdf.exe
Download: download sample
Signature RemcosRAT
Create hunting rule
File size:1'112'765 bytes
First seen:2021-09-13 13:35:11 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash fcf1390e9ce472c7270447fc5c61a0c1 (863 x DCRat, 118 x NanoCore, 94 x njrat)
ssdeep 24576:5AOcZ9ZbrLdyJ4XTn70eijnRgpPuoF+bJm:zOLdy6X/0e/Y3lm
Threatray 2'422 similar samples on MalwareBazaar
TLSH T19835DFD2E78084B6C4B70734447B9B337D77B12C5E69460E2BA0BE2E7D323416926E97
dhash icon 7eeceeccd6c2f2f2 (14 x Formbook, 9 x AgentTesla, 8 x RemcosRAT)
Reporter Anonymous
Tags:exe RemcosRAT

Intelligence

File Origin
# of uploads :
1
# of downloads :
138
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
Covid-19 Data Report Checklist_pdf.exe
Verdict:
Malicious activity
Analysis date:
2021-09-13 07:19:30 UTC
Tags:
covid19 rat remcos autoit keylogger
Link:
https://app.any.run/tasks/1dba728d-29fe-4287-814c-93651ee87159

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/187482/
Detection(s):
SecuriteInfo.com.Gen.Variant.Johnnie.221809.751.14920.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Searching for the window
Creating a file in the %AppData% subdirectories
Enabling the 'hidden' option for recently created files
Creating a process from a recently created file
Creating a file
Adding an access-denied ACE
Launching a process
Connection attempt to an infection source
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Setting a global event handler for the keyboard
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:
greyware overlay packed
Link:
https://www.filescan.io/uploads/6175025bdb358dd15ed91bcd/reports/90834dc0-e2cf-4814-a755-0a19f3eb82b4/overview
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/ab9446fd-3174-42b2-bc79-62e8cda4976f
Result
Threat name:
Remcos
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/849832
Signature
Allocates memory in foreign processes
C2 URLs / IPs found in malware configuration
Contains functionality to capture and log keystrokes
Contains functionality to inject code into remote processes
Contains functionality to steal Chrome passwords or cookies
Contains functionality to steal Firefox passwords or cookies
Detected Remcos RAT
Drops PE files with a suspicious file extension
Found malware configuration
Initial sample is a PE file and has a suspicious name
Injects a PE file into a foreign processes
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Sigma detected: Bad Opsec Defaults Sacrificial Processes With Improper Arguments
Writes to foreign memory regions
Yara detected AntiVM autoit script
Yara detected Remcos RAT
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 482260 Sample: Covid-19 Data Report Checkl... Startdate: 13/09/2021 Architecture: WINDOWS Score: 100 26 Found malware configuration 2->26 28 Malicious sample detected (through community Yara rule) 2->28 30 Multi AV Scanner detection for submitted file 2->30 32 7 other signatures 2->32 7 Covid-19 Data Report Checklist_pdf.exe 61 2->7         started        10 gajb.pif 2->10         started        process3 file4 22 C:\Users\user\AppData\Roaming\...\gajb.pif, PE32 7->22 dropped 13 gajb.pif 1 2 7->13         started        42 Writes to foreign memory regions 10->42 44 Allocates memory in foreign processes 10->44 46 Injects a PE file into a foreign processes 10->46 16 RegSvcs.exe 10->16         started        signatures5 process6 signatures7 48 Multi AV Scanner detection for dropped file 13->48 50 Writes to foreign memory regions 13->50 52 Allocates memory in foreign processes 13->52 54 Injects a PE file into a foreign processes 13->54 18 RegSvcs.exe 2 3 13->18         started        process8 dnsIp9 24 cato.fingusti.club 79.134.225.107, 49735, 6609 FINK-TELECOM-SERVICESCH Switzerland 18->24 34 Contains functionality to steal Chrome passwords or cookies 18->34 36 Contains functionality to capture and log keystrokes 18->36 38 Contains functionality to inject code into remote processes 18->38 40 Contains functionality to steal Firefox passwords or cookies 18->40 signatures10
Detection:
remcos
Create hunting rule
Link:
https://mwdb.cert.pl/sample/a3f8ab3315bcd827a53bf5dfe1b55f550a21e40287d15e082e364b870d6a02f8/
Threat name:
Win32.Trojan.Lisk
Create hunting rule
Status:
Malicious
First seen:
2021-09-13 13:28:44 UTC
AV detection:
20 of 37 (54.05%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=up4kwmyvxtmcpjj36xp6dnk7kufcdzacq7iv4cbogzfyodlkal4a._file
Verdict:
malicious
Label(s):
remcos
Create hunting rule
Similar samples:
0e6a5a8e25fbcd47b9e4f7a7657523554e4461e5a314ed2b0a32fe7d97d00805
RemcosRAT
3afedea501a9bca64d1d400f5e3aa79e1f0d359a035d84569c123d49458425f2
RemcosRAT
65d246d802665601ae63bd52d49d3208bdad035aa193378fc349df3ed0777a44
RemcosRAT
80d596a7fa52a5d9b41243e03a88ba0ca560cc95219a38d764947a75f568bea1
RemcosRAT
a97278750b1c8339b6fc7601434b733174ec05d6bd5dbde44a2a98ca6951f183
RemcosRAT
b9b61268d1a21a119391e6316826c44425aec53a42155a7253f62639876eb687
RemcosRAT
c8c67b9895ec2b463cc43a5c9c1e32363ff1a7a061c99d01dd3de5691e9d1d47
RemcosRAT
ccca82e76f5e7fae5c3bcf6a5ff542f95ad241e2c47a00c969ddbf2f50beda25
RemcosRAT
+ 2'412 additional samples on MalwareBazaar
Result
Malware family:
remcos
Create hunting rule
Score:
  10/10
Tags:
family:nanocore family:remcos botnet:newyear keylogger persistence rat spyware stealer trojan
Link:
https://tria.ge/reports/210913-qv8xcadgd9/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Suspicious use of SetThreadContext
Adds Run key to start application
Loads dropped DLL
Executes dropped EXE
NanoCore
Remcos
Malware Config
C2 Extraction:
cato.fingusti.club:6609
Unpacked files
SH256 hash:
f8ff8336b9c3036dd6d83cf065f2ecb649786af35dc2d0a2c8ccbf27901f7b6a
MD5 hash:
53d6622008bc5d9718732c4a8fccc4c6
SHA1 hash:
7d00569a7160255e9a144211fb3fac99a176bb1d
Detections:
win_remcos_g0
Create hunting rule
win_remcos_auto
Create hunting rule
Link:
https://www.unpac.me/results/5712c872-09cf-40bf-a3bf-f2cdc2ad4af0/
Parent samples :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 hash:
72c110178ec0fc35c17eb883222477895d7d1cc52b3caf68fe2262aeb5278b90
MD5 hash:
b75662309ac3e754da9478848a118b26
SHA1 hash:
42579f4555546857f20ae40f52b1ac00ed98c8b5
Link:
https://www.unpac.me/results/5712c872-09cf-40bf-a3bf-f2cdc2ad4af0/
SH256 hash:
a3f8ab3315bcd827a53bf5dfe1b55f550a21e40287d15e082e364b870d6a02f8
MD5 hash:
26467941a5c46c31d4915abd5e4a2965
SHA1 hash:
f0c57e46d0d83e03bc166f018fbb9d819b104c3a
Link:
https://www.unpac.me/results/5712c872-09cf-40bf-a3bf-f2cdc2ad4af0/
Malware family:
Remcos
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/a3f8ab3315bc/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/a3f8ab3315bcd827a53bf5dfe1b55f550a21e40287d15e082e364b870d6a02f8

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_SUSPICIOUS_EXE_UACBypass_EventViewer
Create hunting rule
Author:ditekSHen
Description:detects Windows exceutables potentially bypassing UAC using eventvwr.exe
Rule name:Parallax
Create hunting rule
Author:@bartblaze
Description:Identifies Parallax RAT.
Rule name:Remcos
Create hunting rule
Author:JPCERT/CC Incident Response Group
Description:detect Remcos in memory
Rule name:remcos_rat
Create hunting rule
Author:jeFF0Falltrades
Rule name:REMCOS_RAT_variants
Create hunting rule
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.

  
Delivery method
Distributed via e-mail link
Cape
Cape
https://www.capesandbox.com/analysis/187482/

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