MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 3e8f952eabfa0b74dd92b86d52604ef90236014444dc444ce27f147f6bacfded. 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: 9


Intelligence 9 IOCs YARA 11 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 3e8f952eabfa0b74dd92b86d52604ef90236014444dc444ce27f147f6bacfded
SHA3-384 hash: d2e3be2e341eab9af2f3376bed4ead8f8960478fe51fc2d377c419ea09e8423bf8fd90e10a4cc0ab923e8532334a6391
SHA1 hash: 39e21079725a6de63264db69897006d969281619
MD5 hash: 17248e3040a7ce49619bb8f995cbc252
humanhash: ceiling-carbon-triple-carolina
File name:3e8f952eabfa0b74dd92b86d52604ef90236014444dc444ce27f147f6bacfded
Download: download sample
Signature RemcosRAT
Create hunting rule
File size:1'179'168 bytes
First seen:2020-11-10 11:22:46 UTC
Last seen:2024-07-24 13:23:56 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash afcdf79be1557326c854b6e20cb900a7 (1'102 x FormBook, 936 x AgentTesla, 399 x RemcosRAT)
ssdeep 24576:41ENCPWsNieAA0V3Yb3JPd03wmHaLIahgxY3b5k7:zCDARkJl0gYaLDNc
Threatray 925 similar samples on MalwareBazaar
TLSH 5945CF0273E5C0B2FF9AA2739B19B24297786D350173842F23A82DB8BD715B1467D763
Reporter seifreed
Tags:RemcosRAT

Intelligence

File Origin
# of uploads :
2
# of downloads :
75
Origin country :
n/a
Vendor Threat Intelligence
Detection(s):
Win.Malware.Autoit-6985962-0
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Sending a UDP request
Creating a window
Unauthorized injection to a recently created process
Creating a file in the %AppData% subdirectories
Enabling the 'hidden' option for recently created files
Creating a file in the %temp% directory
Creating a process from a recently created file
Creating a process with a hidden window
Launching a process
Deleting a recently created file
Running batch commands
DNS request
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Unauthorized injection to a recently created process by context flags manipulation
Setting a global event handler for the keyboard
Enabling autorun by creating a file
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/529542
Signature
Allocates memory in foreign processes
Antivirus / Scanner detection for submitted sample
Antivirus detection for dropped file
AutoIt script contains suspicious strings
Binary is likely a compiled AutoIt script file
Contains functionality to capture and log keystrokes
Contains functionality to detect virtual machines (IN, VMware)
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
Detected unpacking (creates a PE file in dynamic memory)
Injects a PE file into a foreign processes
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for domain / URL
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Sigma detected: Remcos
Sigma detected: Suspicious Svchost Process
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Tries to harvest and steal browser information (history, passwords, etc)
Uses dynamic DNS services
Uses schtasks.exe or at.exe to add and modify task schedules
Writes to foreign memory regions
Yara detected Remcos RAT
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 313868 Sample: lfvdVOW139 Startdate: 11/11/2020 Architecture: WINDOWS Score: 100 82 daya4659.ddns.net 2->82 86 Multi AV Scanner detection for domain / URL 2->86 88 Malicious sample detected (through community Yara rule) 2->88 90 Antivirus / Scanner detection for submitted sample 2->90 92 10 other signatures 2->92 13 lfvdVOW139.exe 3 2->13         started        17 sfc.exe 1 2->17         started        19 remcos.exe 2->19         started        21 3 other processes 2->21 signatures3 process4 file5 78 C:\Users\user\AppData\Roaming\...\sfc.exe, PE32 13->78 dropped 102 Binary is likely a compiled AutoIt script file 13->102 104 Contains functionality to detect virtual machines (IN, VMware) 13->104 106 Contains functionality to steal Chrome passwords or cookies 13->106 112 3 other signatures 13->112 23 lfvdVOW139.exe 5 5 13->23         started        26 schtasks.exe 1 13->26         started        108 Antivirus detection for dropped file 17->108 110 Injects a PE file into a foreign processes 17->110 28 schtasks.exe 17->28         started        30 sfc.exe 17->30         started        32 schtasks.exe 19->32         started        34 remcos.exe 19->34         started        36 schtasks.exe 21->36         started        38 schtasks.exe 21->38         started        40 2 other processes 21->40 signatures6 process7 file8 74 C:\Users\user\AppData\Roaming\...\remcos.exe, PE32 23->74 dropped 76 C:\Users\user\...\remcos.exe:Zone.Identifier, ASCII 23->76 dropped 42 wscript.exe 1 23->42         started        44 conhost.exe 26->44         started        46 conhost.exe 28->46         started        48 conhost.exe 32->48         started        50 conhost.exe 36->50         started        52 conhost.exe 38->52         started        process9 process10 54 cmd.exe 1 42->54         started        process11 56 remcos.exe 1 54->56         started        59 conhost.exe 54->59         started        signatures12 94 Antivirus detection for dropped file 56->94 96 Multi AV Scanner detection for dropped file 56->96 98 Detected unpacking (creates a PE file in dynamic memory) 56->98 100 5 other signatures 56->100 61 remcos.exe 5 3 56->61         started        66 schtasks.exe 1 56->66         started        process13 dnsIp14 84 daya4659.ddns.net 61->84 80 C:\Users\user\AppData\Roaming\...\logs.dat, data 61->80 dropped 114 Tries to harvest and steal browser information (history, passwords, etc) 61->114 116 Writes to foreign memory regions 61->116 118 Allocates memory in foreign processes 61->118 120 Injects a PE file into a foreign processes 61->120 68 svchost.exe 61->68         started        70 conhost.exe 66->70         started        file15 signatures16 process17 process18 72 WerFault.exe 68->72         started       
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/3e8f952eabfa0b74dd92b86d52604ef90236014444dc444ce27f147f6bacfded/
Threat name:
Win32.Hacktool.Generic
Create hunting rule
Status:
Suspicious
First seen:
2020-11-10 11:27:19 UTC
AV detection:
39 of 48 (81.25%)
Threat level:
  1/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=h2hzklvl7ifxjxmsxbwveyco7ebdmakeitoeithcp4kh625m7xwq._file
Verdict:
malicious
Label(s):
remcos
Create hunting rule
Similar samples:
2e1ae006b7e36e902198d9978964651ac51f62484dc23a9423d4c8848d585a69
RemcosRAT
318d50e4155f24d6fb987eba93dbabb01b72d9f2d643bbf3dcef88e923bccff8
RemcosRAT
3a51c1d4ffd8b5e6388b6bb3be6f1db8f6b152b1fa75d39cc68fd3ca232248db
RemcosRAT
423cf3b19a3da311fb319307fb1491a2d303a4d6591f7b932155987c9ee5dcc5
RemcosRAT
5b2f279233dedbcfe21f80e037bd2833771759e0e992b05733d489d3e5013f1d
RemcosRAT
6083d7084795ed9d60be324c610dbfab644a3e25c982755a93071e23db11198a
RemcosRAT
8de876c0766f3590a1e8c5b2ff94d40ec95a093167292dfa07c4c82da173cce6
RemcosRAT
ac2a1a0b8560a6c0305e4d8e4fba8221974f011c5b52a5adec277268d4715f69
RemcosRAT
bd6ae166438e850f91430a43cbae4caf84d78ea85706bb459b8f9facf3965b52
RemcosRAT
cbffffdb51c8b3351cb3c2fc8011a5ecb90dee60bbf482ccae90a64603a00b07
RemcosRAT
+ 915 additional samples on MalwareBazaar
Result
Malware family:
remcos
Create hunting rule
Score:
  10/10
Tags:
family:remcos persistence rat
Link:
https://tria.ge/reports/201110-8r1ylfgnka/
Behaviour
Creates scheduled task(s)
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Modifies registry class
Suspicious use of SetThreadContext
Adds Run key to start application
Loads dropped DLL
Executes dropped EXE
Remcos
Malware Config
C2 Extraction:
daya4659.ddns.net:8282
Unpacked files
SH256 hash:
3e8f952eabfa0b74dd92b86d52604ef90236014444dc444ce27f147f6bacfded
MD5 hash:
17248e3040a7ce49619bb8f995cbc252
SHA1 hash:
39e21079725a6de63264db69897006d969281619
Link:
https://www.unpac.me/results/3a76e6c0-f9a8-45ad-a6e6-892c4edf21b3/
SH256 hash:
0954fe3152ff66dd9dd26dfcb13edf21915e51dec6993600aff97b7a768dc088
MD5 hash:
c9d17b356e7c463f2b4f57e0f98edb1e
SHA1 hash:
16f75139e11c1d673251c8367fea15f44932f881
Detections:
win_remcos_g0
Create hunting rule
win_remcos_auto
Create hunting rule
Link:
https://www.unpac.me/results/3a76e6c0-f9a8-45ad-a6e6-892c4edf21b3/
Parent samples :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 note that we are no longer able to provide a coverage score for Virus Total.

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:AutoIT_Compiled
Create hunting rule
Author:@bartblaze
Description:Identifies compiled AutoIT script (as EXE).
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:Parallax
Create hunting rule
Author:@bartblaze
Description:Identifies Parallax RAT.
Rule name:Ping_Del_method_bin_mem
Create hunting rule
Author:James_inthe_box
Description:cmd ping IP nul del
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:autogenerated rule brought to you by yara-signator

File information

The table below shows additional information about this malware sample such as delivery method and external references.

  
Delivery method
Other

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