MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 4b989ceef83817dd4a14c9322a2b127a14f98d85dafb99625fe3483cd58dc6dc. 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: 4b989ceef83817dd4a14c9322a2b127a14f98d85dafb99625fe3483cd58dc6dc
SHA3-384 hash: 91dd8d47b9245aff265a3af504492902969c34ada46fec9e4037c2f5d259455b6fef8c3b80ec0c3c5055f4798ad9a7d4
SHA1 hash: 6035e885fc969675b5d6d597a8d340d72a04f718
MD5 hash: 2749086603745acbf50b07bf0782317f
humanhash: papa-social-enemy-mike
File name:ORDEN 5676-SEPT1521,pdf.exe
Download: download sample
Signature RemcosRAT
Create hunting rule
File size:811'520 bytes
First seen:2021-09-15 15:25:22 UTC
Last seen:2021-09-15 16:20:21 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash 91f41270d021c09d2e59583bf5cdff98 (5 x RemcosRAT, 1 x Formbook)
ssdeep 24576:W0WE0AyOVWoKcwdZ2GIZHrIzvlZwXI7Dyj3SaH+MJu:W0WEoQhudZx
Threatray 678 similar samples on MalwareBazaar
TLSH T16B056F85A1502872D02F29749C57EFDDC8467D983E06ECA892FEC8772538BD23E6905F
dhash icon 88c7ce3cbddc2f31 (24 x RemcosRAT, 12 x Formbook, 8 x Loki)
Reporter abuse_ch
Tags:exe RAT RemcosRAT

Intelligence

File Origin
# of uploads :
2
# of downloads :
158
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
ORDEN 5676-SEPT1521,pdf.exe
Verdict:
Malicious activity
Analysis date:
2021-09-15 15:26:56 UTC
Tags:
installer trojan rat remcos
Link:
https://app.any.run/tasks/85812f7d-f7a6-4153-a9dd-6c560b7e3caa

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/188225/
Detection(s):
PUA.Win.Adware.Slugin-6840354-0
Create hunting rule

Result
Verdict:
Clean
Maliciousness:

Behaviour
Creating a window
DNS request
Connection attempt
Sending a custom TCP request
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Link:
https://www.filescan.io/uploads/61751bc2db358dd15ed925e1/reports/84550e6f-a82a-45ce-b250-d783c4d5196f/overview
Malware family:
REMCOS
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/48b5ae48-8af4-44d0-bc63-eef869f6778d
Result
Threat name:
Remcos
Create hunting rule
Detection:
malicious
Classification:
rans.troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/851539
Signature
Allocates memory in foreign processes
C2 URLs / IPs found in malware configuration
Contains functionality to inject code into remote processes
Contains functionality to register a low level keyboard hook
Contains functionality to steal Chrome passwords or cookies
Contains functionality to steal Firefox passwords or cookies
Contains functionalty to change the wallpaper
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
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for dropped file
Snort IDS alert for network traffic (e.g. based on Emerging Threat rules)
Uses dynamic DNS services
Writes to foreign memory regions
Yara detected Remcos RAT
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 483970 Sample: ORDEN 5676-SEPT1521,pdf.exe Startdate: 15/09/2021 Architecture: WINDOWS Score: 100 61 Snort IDS alert for network traffic (e.g. based on Emerging Threat rules) 2->61 63 Found malware configuration 2->63 65 Malicious sample detected (through community Yara rule) 2->65 67 4 other signatures 2->67 8 ORDEN 5676-SEPT1521,pdf.exe 1 21 2->8         started        13 Tbnaalkn.exe 15 2->13         started        15 Tbnaalkn.exe 16 2->15         started        process3 dnsIp4 47 onedrive.live.com 8->47 49 gsh8aa.dm.files.1drv.com 8->49 51 dm-files.fe.1drv.com 8->51 41 C:\Users\Public\Libraries\Tbnaalkn.exe, PE32 8->41 dropped 77 Writes to foreign memory regions 8->77 79 Allocates memory in foreign processes 8->79 81 Creates a thread in another existing process (thread injection) 8->81 17 DpiScaling.exe 2 8->17         started        21 cmd.exe 1 8->21         started        23 cmd.exe 1 8->23         started        53 onedrive.live.com 13->53 57 2 other IPs or domains 13->57 83 Multi AV Scanner detection for dropped file 13->83 85 Injects a PE file into a foreign processes 13->85 25 logagent.exe 13->25         started        55 onedrive.live.com 15->55 59 2 other IPs or domains 15->59 27 mshta.exe 15->27         started        file5 signatures6 process7 dnsIp8 43 zion6.ddns.net 91.193.75.133, 2815, 49766 DAVID_CRAIGGG Serbia 17->43 45 192.168.2.1 unknown unknown 17->45 69 Contains functionalty to change the wallpaper 17->69 71 Contains functionality to steal Chrome passwords or cookies 17->71 73 Contains functionality to inject code into remote processes 17->73 75 3 other signatures 17->75 29 reg.exe 1 21->29         started        31 conhost.exe 21->31         started        33 cmd.exe 1 23->33         started        35 conhost.exe 23->35         started        signatures9 process10 process11 37 conhost.exe 29->37         started        39 conhost.exe 33->39         started       
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/4b989ceef83817dd4a14c9322a2b127a14f98d85dafb99625fe3483cd58dc6dc/
Threat name:
Win32.Infostealer.Fareit
Create hunting rule
Status:
Malicious
First seen:
2021-09-15 15:26:14 UTC
AV detection:
12 of 43 (27.91%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=jomjz3xyhal52squzezcukyspikptdmf3l5zsys74nedzvmny3oa._file
Verdict:
malicious
Label(s):
remcos
Create hunting rule
Similar samples:
16b834e15f6d2c66cb5f2b8b5acbe63830408847d3731d60625b57c1c0e9ad5a
RemcosRAT
1974f2f3c94bc79af6872802cae45f9113ce6b708635930a77aa73db92898852
RemcosRAT
6a3aa7d5ab777a2824d7d312dfd49e0b03e30959a9219e7f782860d2d8b9a12c
RemcosRAT
7162fc24e700f042d19b8f08a42c91bfae05f2a08c66df2bb4cb3d8e8635e475
RemcosRAT
7e6b40371751970ec5b3b17f02a89ac6ff1b7f9ec20210144fd75f992c3af21e
RemcosRAT
a4e0f53f95a9c758592dfd652c6c7bdc3535d45b7f4ab2c2bb6a7e2f3b215526
RemcosRAT
b70ee93e9f63d90785264d45dae48012a1d00b92f63c21ccae0f5d2003c00554
RemcosRAT
e1686c75b6d0982c533063557289dd24d66ba74a9dd37cd5d328c3451035a01f
RemcosRAT
f198970271e10830bafa86eccc5ce43e5075a15ed43f4e1924d0e8e0824f218b
RemcosRAT
+ 668 additional samples on MalwareBazaar
Result
Malware family:
remcos
Create hunting rule
Score:
  10/10
Tags:
family:remcos botnet:ok man persistence rat suricata
Link:
https://tria.ge/reports/210915-st8ajadhhj/
Behaviour
Modifies registry key
Suspicious use of WriteProcessMemory
Adds Run key to start application
Remcos
suricata: ET MALWARE Remocs 3.x Unencrypted Checkin
suricata: ET MALWARE Remocs 3.x Unencrypted Server Response
Malware Config
C2 Extraction:
zion6.ddns.net:2815
Unpacked files
SH256 hash:
519197f521aa39b7a7ab34b4500a304a7329d967115c2e48fe1b6eb201e39af1
MD5 hash:
3da921c9355d01d335cf03159a950030
SHA1 hash:
3be3f4ea8f289a123dcd1f6ac97c6f34a503c9cf
Link:
https://www.unpac.me/results/2b57055d-7812-4934-8acb-1f747145a662/
SH256 hash:
4b989ceef83817dd4a14c9322a2b127a14f98d85dafb99625fe3483cd58dc6dc
MD5 hash:
2749086603745acbf50b07bf0782317f
SHA1 hash:
6035e885fc969675b5d6d597a8d340d72a04f718
Link:
https://www.unpac.me/results/2b57055d-7812-4934-8acb-1f747145a662/
Malware family:
Remcos
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/4b989ceef838/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/4b989ceef83817dd4a14c9322a2b127a14f98d85dafb99625fe3483cd58dc6dc

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.

Malspam

RemcosRAT

Executable exe 4b989ceef83817dd4a14c9322a2b127a14f98d85dafb99625fe3483cd58dc6dc

(this sample)

  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/188225/

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