MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 980b7e35e43b7589eb7dec6571e43fb6d3589c17559ac14d80115f6b575fc60a. 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: 980b7e35e43b7589eb7dec6571e43fb6d3589c17559ac14d80115f6b575fc60a
SHA3-384 hash: fdf89cd5b91064fc1a56f4b2eeab6d51c8a7a34622640d829ab09cab79ea45bf90cee55f2b2a49d4a3aaec920e507c7c
SHA1 hash: 7a8035eea04ffc3e5bd85deefcc6fe6c632331dd
MD5 hash: cc3726779f54ba22b88d7a0e30e7e9cd
humanhash: xray-alaska-fifteen-idaho
File name:cc3726779f54ba22b88d7a0e30e7e9cd.exe
Download: download sample
Signature RemcosRAT
Create hunting rule
File size:1'051'648 bytes
First seen:2021-04-22 10:21:58 UTC
Last seen:2021-04-22 11:15:39 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 24576:VGsXUlknjI2QHLuFnYZv6CtF7vbwrMC4WcE5OGEJCeXAMLr3:Qpqd62Y8wF7vbpWR5ODXA83
TLSH 5B2522843394729EDA5BCD32B8A49D122E3176378B07C61F900755AE1E8EBD79E047B3
Reporter abuse_ch
Tags:exe RAT RemcosRAT

Intelligence

File Origin
# of uploads :
2
# of downloads :
183
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
http://brownfilleds.duckdns.org/zeddd.exe
Verdict:
Malicious activity
Analysis date:
2021-04-22 07:27:04 UTC
Tags:
rat remcos
Link:
https://app.any.run/tasks/03195d24-8d0f-40e4-b0f9-fa9a81aa6b3d

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/143676/
Detection(s):
SecuriteInfo.com.Variant.Kryptic.18.23294.2751.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
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/692808
Signature
Allocates memory in foreign processes
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
Detected unpacking (creates a PE file in dynamic memory)
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
Writes to foreign memory regions
Yara detected AntiVM3
Yara detected Remcos RAT
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 395337 Sample: GVo7uVtZVu.exe Startdate: 22/04/2021 Architecture: WINDOWS Score: 100 87 Found malware configuration 2->87 89 Malicious sample detected (through community Yara rule) 2->89 91 Multi AV Scanner detection for submitted file 2->91 93 8 other signatures 2->93 13 GVo7uVtZVu.exe 3 2->13         started        17 remcos.exe 2->17         started        process3 file4 65 C:\Users\user\AppData\...behaviorgraphVo7uVtZVu.exe.log, ASCII 13->65 dropped 111 Contains functionality to steal Chrome passwords or cookies 13->111 113 Contains functionality to inject code into remote processes 13->113 115 Contains functionality to steal Firefox passwords or cookies 13->115 117 Delayed program exit found 13->117 19 GVo7uVtZVu.exe 4 5 13->19         started        119 Injects a PE file into a foreign processes 17->119 22 remcos.exe 17->22         started        signatures5 process6 file7 57 C:\Users\user\AppData\Roaming\...\remcos.exe, PE32 19->57 dropped 59 C:\Users\user\...\remcos.exe:Zone.Identifier, ASCII 19->59 dropped 24 wscript.exe 1 19->24         started        process8 process9 26 cmd.exe 1 24->26         started        process10 28 remcos.exe 3 26->28         started        32 conhost.exe 26->32         started        file11 63 C:\Users\user\AppData\...\remcos.exe.log, ASCII 28->63 dropped 103 Multi AV Scanner detection for dropped file 28->103 105 Detected unpacking (creates a PE file in dynamic memory) 28->105 107 Machine Learning detection for dropped file 28->107 109 4 other signatures 28->109 34 remcos.exe 4 3 28->34         started        signatures12 process13 dnsIp14 67 fieldsdegreenf.duckdns.org 45.144.225.94, 49714, 49776, 49777 DEDIPATH-LLCUS Netherlands 34->67 69 aaeeerbbbeee.duckdns.org 34->69 95 Writes to foreign memory regions 34->95 97 Allocates memory in foreign processes 34->97 99 Installs a global keyboard hook 34->99 101 Injects a PE file into a foreign processes 34->101 38 WerFault.exe 34->38         started        42 svchost.exe 1 12 34->42         started        44 svchost.exe 34->44         started        46 svchost.exe 34->46         started        signatures15 process16 dnsIp17 85 192.168.2.1 unknown unknown 38->85 61 C:\ProgramData\Microsoft\...\Report.wer, Little-endian 38->61 dropped 48 iexplore.exe 42->48         started        file18 process19 process20 50 iexplore.exe 48->50         started        53 iexplore.exe 48->53         started        55 iexplore.exe 48->55         started        dnsIp21 71 github.com 140.82.121.3, 443, 49726, 49727 GITHUBUS United States 50->71 73 avatars.githubusercontent.com 185.199.108.133, 443, 49731, 49732 FASTLYUS Netherlands 50->73 75 js.monitor.azure.com 50->75 77 140.82.121.4, 443, 49741, 49742 GITHUBUS United States 53->77 79 js.monitor.azure.com 53->79 81 185.199.109.133, 443, 49771, 49772 FASTLYUS Netherlands 55->81 83 js.monitor.azure.com 55->83
Detection:
remcos
Create hunting rule
Link:
https://mwdb.cert.pl/sample/980b7e35e43b7589eb7dec6571e43fb6d3589c17559ac14d80115f6b575fc60a/
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
Create hunting rule
Status:
Malicious
First seen:
2021-04-22 07:18:06 UTC
File Type:
PE (.Net Exe)
Extracted files:
18
AV detection:
23 of 47 (48.94%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=tafx4npehn2yt2355rsxdzb7w3jvrhaxkwnmctmacfpwwv27yyfa._file
Result
Malware family:
remcos
Create hunting rule
Score:
  10/10
Tags:
family:remcos persistence rat
Link:
https://tria.ge/reports/210422-j322ky2t2j/
Behaviour
Suspicious use of AdjustPrivilegeToken
Suspicious use of FindShellTrayWindow
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Modifies Internet Explorer settings
Modifies registry class
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
Suspicious behavior: MapViewOfSection
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
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Kryptic
Score:
0.80
Link:
https://yomi.yoroi.company/submissions/980b7e35e43b7589eb7dec6571e43fb6d3589c17559ac14d80115f6b575fc60a

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 980b7e35e43b7589eb7dec6571e43fb6d3589c17559ac14d80115f6b575fc60a

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/1145250/
  
Delivery method
Distributed via web download
Cape
Cape
https://www.capesandbox.com/analysis/143676/

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