MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 3bfc1578a54adf8fddb981d461ebc6f6d730fd7cfbf69bb1df421043210a26fb. 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 6 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 3bfc1578a54adf8fddb981d461ebc6f6d730fd7cfbf69bb1df421043210a26fb
SHA3-384 hash: 29078c0f03ff756456bd31ff75ed84080fd7271d44295052d9b4ef0d412e78567b3d2fd69c1541c7b5745983bda6a8d2
SHA1 hash: 53398cac5860fc249d1b0ab188a083d895a46a07
MD5 hash: f53b11a4a12f5bc26b12dfb56ee3f35e
humanhash: beryllium-minnesota-failed-east
File name:f53b11a4a12f5bc26b12dfb56ee3f35e.exe
Download: download sample
Signature RemcosRAT
Create hunting rule
File size:929'794 bytes
First seen:2021-08-21 19:46:26 UTC
Last seen:2021-08-21 21:06:07 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash eab6b00b3a7206039f5a8a9c3fe64584 (2 x RemcosRAT)
ssdeep 12288:8GBapj1mg3ShbnM19hbLgBN0gj6rIU4zcSo6nVwxZz7SYf3ifItMI5WF9:8GUmgShbnM19hlw3HpiVfTt/5e
Threatray 511 similar samples on MalwareBazaar
TLSH T153157D02E18928B3D16317F92C2FF7B5492E795D29319D8D7AF36C0C9E37A24392851B
dhash icon 62a3e3e38a83b792 (2 x RemcosRAT)
Reporter abuse_ch
Tags:exe RAT RemcosRAT

Intelligence

File Origin
# of uploads :
2
# of downloads :
153
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
f53b11a4a12f5bc26b12dfb56ee3f35e.exe
Verdict:
Malicious activity
Analysis date:
2021-08-21 19:49:17 UTC
Tags:
rat remcos
Link:
https://app.any.run/tasks/a04c2398-29b3-418f-8fe7-8fc18856d92d

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/181114/
Detection(s):
SecuriteInfo.com.Trojan.DownLoader41.4140.27737.31696.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
DNS request
Connection attempt
Sending a custom TCP request
Creating a file
Deleting a recently created file
Launching a process
Running batch commands
Creating a process with a hidden window
Launching cmd.exe command interpreter
Sending a UDP request
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Unauthorized injection to a system process
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.
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/1ed20a07-6d22-4c40-81a9-3a2e83ed7d83
Result
Threat name:
Remcos
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/836841
Signature
C2 URLs / IPs found in malware configuration
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
Found malware configuration
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
Writes to foreign memory regions
Yara detected Remcos RAT
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 469272 Sample: 4R9z1vVrUf.exe Startdate: 21/08/2021 Architecture: WINDOWS Score: 100 40 twistednerd.dvrlists.com 2->40 54 Found malware configuration 2->54 56 Malicious sample detected (through community Yara rule) 2->56 58 Multi AV Scanner detection for submitted file 2->58 60 4 other signatures 2->60 9 4R9z1vVrUf.exe 1 22 2->9         started        14 Ykqshds.exe 2->14         started        signatures3 process4 dnsIp5 42 sn-files.fe.1drv.com 9->42 44 onedrive.live.com 9->44 46 a2rdqw.sn.files.1drv.com 9->46 36 C:\Users\Public\Libraries\...\Ykqshds.exe, PE32 9->36 dropped 62 Writes to foreign memory regions 9->62 64 Creates a thread in another existing process (thread injection) 9->64 66 Injects a PE file into a foreign processes 9->66 16 mobsync.exe 2 9->16         started        20 cmd.exe 1 9->20         started        22 cmd.exe 1 9->22         started        68 Multi AV Scanner detection for dropped file 14->68 70 Machine Learning detection for dropped file 14->70 file6 signatures7 process8 dnsIp9 38 twistednerd.dvrlists.com 62.102.148.152, 8618 TEKNIKBYRANSE Sweden 16->38 48 Contains functionality to inject code into remote processes 16->48 50 Contains functionality to steal Firefox passwords or cookies 16->50 52 Delayed program exit found 16->52 24 reg.exe 1 20->24         started        26 conhost.exe 20->26         started        28 cmd.exe 1 22->28         started        30 conhost.exe 22->30         started        signatures10 process11 process12 32 conhost.exe 24->32         started        34 conhost.exe 28->34         started       
Detection:
remcos
Create hunting rule
Link:
https://mwdb.cert.pl/sample/3bfc1578a54adf8fddb981d461ebc6f6d730fd7cfbf69bb1df421043210a26fb/
Threat name:
Win32.Infostealer.Fareit
Create hunting rule
Status:
Malicious
First seen:
2021-08-20 21:00:43 UTC
AV detection:
11 of 28 (39.29%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=hp6bk6ffjlpy7xnzqhkgd26g63ltb7l47p3jxmo7iiiegiike35q._file
Verdict:
malicious
Label(s):
remcos
Create hunting rule
Similar samples:
11f6a46954cdec78fec52771521926ff6917af81f79e3dc1198a38571b7d7519
RemcosRAT
62960caf3d007638be89631e502733f30c42a9ba0269e8c00457c9dec10e9136
RemcosRAT
643d70b162fbca24123f8c5ad6bab6fb1aa6166fb66a414910a5b78bd68320cf
RemcosRAT
864081d9870b1b81cb2c750b630a828b191f7c664790c54115a8033351f50ea1
RemcosRAT
d4d30acde6fa4db431b90817911b44d21c65fc1fa72744625bccafe3899869bc
RemcosRAT
e6930000e13aa3deafe16f78fcfca8e6276e18ba6a252b8045dfaf570f044328
RemcosRAT
+ 501 additional samples on MalwareBazaar
Result
Malware family:
remcos
Create hunting rule
Score:
  10/10
Tags:
family:remcos botnet:augusta persistence rat
Link:
https://tria.ge/reports/210821-f8mlk3pqfe/
Behaviour
Modifies registry key
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Program crash
Adds Run key to start application
Blocklisted process makes network request
Remcos
Malware Config
C2 Extraction:
twistednerd.dvrlists.com:8618
Unpacked files
SH256 hash:
795b2b5d6668147d7924ac96f90741ddc2a2b5003f455fb842b613a286fbf8fc
MD5 hash:
53011b69a7231aea23d66805a681144b
SHA1 hash:
e3d0d157e763c865e79ccc5bedc2fd5fd90413f7
Link:
https://www.unpac.me/results/93356a90-a51a-4327-a9a1-a79a0bf619b5/
SH256 hash:
3bfc1578a54adf8fddb981d461ebc6f6d730fd7cfbf69bb1df421043210a26fb
MD5 hash:
f53b11a4a12f5bc26b12dfb56ee3f35e
SHA1 hash:
53398cac5860fc249d1b0ab188a083d895a46a07
Link:
https://www.unpac.me/results/93356a90-a51a-4327-a9a1-a79a0bf619b5/
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/3bfc1578a54adf8fddb981d461ebc6f6d730fd7cfbf69bb1df421043210a26fb

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_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.

Web download

RemcosRAT

Executable exe 3bfc1578a54adf8fddb981d461ebc6f6d730fd7cfbf69bb1df421043210a26fb

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/1547592/
  
Delivery method
Distributed via web download
Cape
Cape
https://www.capesandbox.com/analysis/181114/

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