MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 974b3b9247ead5b640b495a96efba657ebee885fd25374e294ce55d7472ee402. 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: 12


Intelligence 12 IOCs YARA 6 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 974b3b9247ead5b640b495a96efba657ebee885fd25374e294ce55d7472ee402
SHA3-384 hash: 73d656631e92baa5c29b15a4b0ee63c61bb48c1bd782ebace78a9c9bd16a9163d0cc04d855efc8f59c0a891aabe86a4a
SHA1 hash: 4437ace2b80a89732e1f292d50e767b646c9b05a
MD5 hash: 21731d17093e84bd146460b533627120
humanhash: robin-paris-sierra-grey
File name:21731d17093e84bd146460b533627120.exe
Download: download sample
Signature RemcosRAT
Create hunting rule
File size:1'023'488 bytes
First seen:2021-04-23 06:28:32 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'741 x AgentTesla, 19'606 x Formbook, 12'242 x SnakeKeylogger)
ssdeep 24576:VeUeJeTeRetL5TekaeJefe7eoecjeqe2e1e/epeue27ee0eyeVXMBTs1WZPbLh69:3L1S73XMG1Whvh6zHfntxBGTHut
TLSH 642512EC3744EA27C65D09F8C8523A8187F6943E6A91EFE96CC1A0EE54CBFC61712507
Reporter abuse_ch
Tags:exe RAT RemcosRAT

Intelligence

File Origin
# of uploads :
1
# of downloads :
168
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
21731d17093e84bd146460b533627120.exe
Verdict:
Malicious activity
Analysis date:
2021-04-23 06:38:28 UTC
Tags:
rat remcos keylogger
Link:
https://app.any.run/tasks/760f1540-baa2-4ff3-8f50-450c3e6c9921

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/143800/
Detection(s):
SecuriteInfo.com.MSIL.Kryptik.VFR-1.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Sending a custom TCP request
Sending a UDP request
Creating a file
Creating a file in the %AppData% subdirectories
Creating a file in the %temp% directory
Creating a process from a recently created file
Creating a process with a hidden window
Deleting a recently created file
Running batch commands
Unauthorized injection to a recently created process
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
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.
Result
Threat name:
Remcos
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/694655
Signature
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
Delayed program exit found
Detected Remcos RAT
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 dropped file
Multi AV Scanner detection for submitted file
Sigma detected: Remcos
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Uses dynamic DNS services
Yara detected AntiVM3
Yara detected Remcos RAT
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 396254 Sample: cB9i3ACGbW.exe Startdate: 23/04/2021 Architecture: WINDOWS Score: 100 52 fieldsdegreenf.duckdns.org 2->52 54 aaeeerbbbeee.duckdns.org 2->54 68 Found malware configuration 2->68 70 Malicious sample detected (through community Yara rule) 2->70 72 Multi AV Scanner detection for submitted file 2->72 74 8 other signatures 2->74 12 cB9i3ACGbW.exe 3 2->12         started        16 remcos.exe 2 2->16         started        18 remcos.exe 2->18         started        signatures3 process4 file5 50 C:\Users\user\AppData\...\cB9i3ACGbW.exe.log, ASCII 12->50 dropped 78 Contains functionality to steal Chrome passwords or cookies 12->78 80 Contains functionality to inject code into remote processes 12->80 82 Contains functionality to steal Firefox passwords or cookies 12->82 84 Delayed program exit found 12->84 20 cB9i3ACGbW.exe 4 5 12->20         started        23 cB9i3ACGbW.exe 12->23         started        25 remcos.exe 16->25         started        27 remcos.exe 18->27         started        signatures6 process7 file8 46 C:\Users\user\AppData\Roaming\...\remcos.exe, PE32 20->46 dropped 48 C:\Users\user\...\remcos.exe:Zone.Identifier, ASCII 20->48 dropped 29 wscript.exe 1 20->29         started        process9 process10 31 cmd.exe 1 29->31         started        process11 33 remcos.exe 3 31->33         started        36 conhost.exe 31->36         started        signatures12 62 Multi AV Scanner detection for dropped file 33->62 64 Machine Learning detection for dropped file 33->64 66 Injects a PE file into a foreign processes 33->66 38 remcos.exe 3 3 33->38         started        42 remcos.exe 33->42         started        process13 dnsIp14 56 fieldsdegreenf.duckdns.org 45.144.225.94, 49725, 49726, 49727 DEDIPATH-LLCUS Netherlands 38->56 58 aaeeerbbbeee.duckdns.org 38->58 60 192.168.2.1 unknown unknown 38->60 76 Installs a global keyboard hook 38->76 44 svchost.exe 38->44         started        signatures15 process16
Detection:
remcos
Create hunting rule
Link:
https://mwdb.cert.pl/sample/974b3b9247ead5b640b495a96efba657ebee885fd25374e294ce55d7472ee402/
Threat name:
Win32.Trojan.Generic
Create hunting rule
Status:
Suspicious
First seen:
2021-04-23 03:55:31 UTC
AV detection:
17 of 47 (36.17%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=s5ftxesh5lk3mqfuswuw565gk7v65cc72jjxjyuuzzk5orzo4qba._file
Result
Malware family:
remcos
Create hunting rule
Score:
  10/10
Tags:
family:remcos persistence rat
Link:
https://tria.ge/reports/210423-3n2khnfvq2/
Behaviour
Modifies Internet Explorer settings
Modifies registry class
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of FindShellTrayWindow
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Drops file in Windows directory
Suspicious use of SetThreadContext
Adds Run key to start application
Loads dropped DLL
Executes dropped EXE
Remcos
Malware Config
C2 Extraction:
fieldsdegreenf.duckdns.org:6553
aaeeerbbbeee.duckdns.org:6553
Unpacked files
SH256 hash:
74b2935b9dfe4ba397fd0507ae3c36abb77193041f2e7c43c55dc4e7b33de61c
MD5 hash:
b5c218f30fecc9cb8513ff6a46737b01
SHA1 hash:
f0416867c2b114789620b318051f1fa390b07eae
Link:
https://www.unpac.me/results/c45c314f-25dc-4cef-877f-28f59520a4f7/
SH256 hash:
199951d59085c3d176a66c71b0871e7c7942fc7d89816b387a3318eba9485446
MD5 hash:
6f4f3024204f2cb20e1f04584566f31f
SHA1 hash:
eff25508f37387d3a92427b0ffe7c5fab3e6968d
Link:
https://www.unpac.me/results/c45c314f-25dc-4cef-877f-28f59520a4f7/
SH256 hash:
02650bdf290724edd38abc7e303ff74ca1fc7fba26f3f0dcead22cdce5b9b3fa
MD5 hash:
9f7ef650ee32895e313edc085fbc29f9
SHA1 hash:
bcde3f8d90c9b0d3ad79785f77a089003260fedc
Detections:
win_remcos_g0
Create hunting rule
Link:
https://www.unpac.me/results/c45c314f-25dc-4cef-877f-28f59520a4f7/
Parent samples :
974b3b9247ead5b640b495a96efba657ebee885fd25374e294ce55d7472ee402
93e3956f268d38726acd19958a181d02feaea3e166b7e7d24d7a0c908141a4b2
af0249150bee4fec74c124f89019cd260c9aacd7b7a7715192b5097f1948eb82
02650bdf290724edd38abc7e303ff74ca1fc7fba26f3f0dcead22cdce5b9b3fa
SH256 hash:
974b3b9247ead5b640b495a96efba657ebee885fd25374e294ce55d7472ee402
MD5 hash:
21731d17093e84bd146460b533627120
SHA1 hash:
4437ace2b80a89732e1f292d50e767b646c9b05a
Link:
https://www.unpac.me/results/c45c314f-25dc-4cef-877f-28f59520a4f7/
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/974b3b9247ead5b640b495a96efba657ebee885fd25374e294ce55d7472ee402

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:Chrome_stealer_bin_mem
Create hunting rule
Author:James_inthe_box
Description:Chrome in files like avemaria
Rule name:INDICATOR_SUSPICIOUS_EXE_UACBypass_EventViewer
Create hunting rule
Author:ditekSHen
Description:detects Windows exceutables potentially bypassing UAC using eventvwr.exe
Rule name:Keylog_bin_mem
Create hunting rule
Author:James_inthe_box
Description:Contains Keylog
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 974b3b9247ead5b640b495a96efba657ebee885fd25374e294ce55d7472ee402

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/1145250/
  
Delivery method
Distributed via web download
Cape
Cape
https://www.capesandbox.com/analysis/143800/

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