MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 755d1705b3e251b03d2dede382eab3891eeab12db5550846a63dac632cdf04a7. 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 1 YARA 12 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 755d1705b3e251b03d2dede382eab3891eeab12db5550846a63dac632cdf04a7
SHA3-384 hash: 3afc715f03a126ae6812994e8e8c10ed5e6d9054c2cb5d54462c64459e24ba6d0478ff6c02b6bbe9e588788e532d699a
SHA1 hash: 9479d694e25e8d4d005d9dea69837f5e0e22cbaf
MD5 hash: 3e362679593f940a622fe45135a5f45d
humanhash: mike-four-single-alpha
File name:Factura Serfinanza039947665133458256509618413.exe
Download: download sample
Signature RemcosRAT
Create hunting rule
File size:17'792 bytes
First seen:2021-06-15 02:31:30 UTC
Last seen:2021-06-15 03:36:42 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'744 x AgentTesla, 19'609 x Formbook, 12'242 x SnakeKeylogger)
ssdeep 384:ijIyFeQXzaeQFeLfW/Pnkcotbg1EXP2F3r/h8:i78peQkCkcUbg1Eizh8
Threatray 1'811 similar samples on MalwareBazaar
TLSH 8E826E1697801AA1DA5F5B31A0F05F081639FB4B7FA2CD576759D0488D43B0F09A8AEE
Reporter abuse_ch
Tags:exe RAT RemcosRAT


Avatar
abuse_ch
RemcosRAT C2:
186.169.54.239:1921

Indicators Of Compromise (IOCs)

Below is a list of indicators of compromise (IOCs) associated with this malware samples.

IOCThreatFox Reference
186.169.54.239:1921 https://threatfox.abuse.ch/ioc/114972/

Intelligence

File Origin
# of uploads :
2
# of downloads :
170
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
Factura Serfinanza039947665133458256509618413.exe
Verdict:
Malicious activity
Analysis date:
2021-06-15 02:37:53 UTC
Tags:
trojan rat remcos keylogger
Link:
https://app.any.run/tasks/d2b0a444-eab7-44bf-9490-69d570b7bf5b

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection(s):
SecuriteInfo.com.Variant.Bulz.516692.22603.18901.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
DNS request
Sending an HTTP GET request
Creating a file
Moving a recently created file
Running batch commands
Creating a process with a hidden window
Launching a process
Adding an access-denied ACE
Creating a file in the %AppData% subdirectories
Enabling the 'hidden' option for recently created files
Creating a file in the %temp% directory
Launching the default Windows debugger (dwwin.exe)
Creating a process from a recently created file
Creating a window
Deleting a recently created file
Sending a UDP request
Unauthorized injection to a recently created process
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
Sending a TCP request to an infection source
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.
Malware family:
REMCOS
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/e3d6b254-2dcc-4857-b3fc-cbe83b34cb72
Result
Threat name:
Remcos
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/802088
Signature
C2 URLs / IPs found in malware configuration
Contains functionality to capture and log keystrokes
Contains functionality to hide a thread from the debugger
Contains functionality to inject code into remote processes
Contains functionality to steal Chrome passwords or cookies
Contains functionality to steal Firefox passwords or cookies
Country aware sample found (crashes after keyboard check)
Detected Remcos RAT
Found malware configuration
Hides threads from debuggers
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)
Sigma detected: WScript or CScript Dropper
Tries to evade analysis by execution special instruction which cause usermode exception
Yara detected Remcos RAT
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 434484 Sample: Factura Serfinanza039947665... Startdate: 15/06/2021 Architecture: WINDOWS Score: 100 104 Found malware configuration 2->104 106 Malicious sample detected (through community Yara rule) 2->106 108 Detected Remcos RAT 2->108 110 10 other signatures 2->110 11 Factura Serfinanza039947665133458256509618413.exe 15 8 2->11         started        15 ProService.exe 2->15         started        17 ProService.exe 2->17         started        process3 dnsIp4 102 apdocroto.gq 104.21.14.60, 49718, 49727, 80 CLOUDFLARENETUS United States 11->102 122 Hides threads from debuggers 11->122 124 Injects a PE file into a foreign processes 11->124 19 Factura Serfinanza039947665133458256509618413.exe 4 5 11->19         started        22 WerFault.exe 9 11->22         started        26 cmd.exe 1 11->26         started        28 WerFault.exe 11->28         started        30 cmd.exe 15->30         started        32 WerFault.exe 15->32         started        34 ProService.exe 15->34         started        36 2 other processes 15->36 signatures5 process6 dnsIp7 84 C:\Users\user\AppData\...\ProService.exe, PE32 19->84 dropped 86 C:\Users\...\ProService.exe:Zone.Identifier, ASCII 19->86 dropped 88 C:\Users\user\AppData\Local\...\install.vbs, data 19->88 dropped 38 wscript.exe 1 19->38         started        98 192.168.2.1 unknown unknown 22->98 112 Tries to evade analysis by execution special instruction which cause usermode exception 22->112 40 conhost.exe 26->40         started        42 timeout.exe 1 26->42         started        44 timeout.exe 30->44         started        46 conhost.exe 30->46         started        90 C:\ProgramData\Microsoft\...\Report.wer, Little-endian 32->90 dropped file8 signatures9 process10 process11 48 cmd.exe 1 38->48         started        50 WerFault.exe 44->50         started        53 cmd.exe 44->53         started        55 ProService.exe 44->55         started        file12 57 ProService.exe 14 7 48->57         started        62 conhost.exe 48->62         started        82 C:\ProgramData\Microsoft\...\Report.wer, Little-endian 50->82 dropped 64 conhost.exe 53->64         started        66 timeout.exe 53->66         started        process13 dnsIp14 100 apdocroto.gq 57->100 94 C:\Users\user\AppData\...\5vqazzos.newcfg, XML 57->94 dropped 114 Machine Learning detection for dropped file 57->114 116 Contains functionality to steal Chrome passwords or cookies 57->116 118 Contains functionality to capture and log keystrokes 57->118 120 3 other signatures 57->120 68 ProService.exe 57->68         started        71 WerFault.exe 57->71         started        74 cmd.exe 1 57->74         started        76 WerFault.exe 57->76         started        file15 signatures16 process17 dnsIp18 96 databasenash2020.online 186.169.54.239, 1921, 49729 COLOMBIATELECOMUNICACIONESSAESPCO Colombia 68->96 92 C:\ProgramData\Microsoft\...\Report.wer, Little-endian 71->92 dropped 78 conhost.exe 74->78         started        80 timeout.exe 74->80         started        file19 process20
Detection:
remcos
Create hunting rule
Link:
https://mwdb.cert.pl/sample/755d1705b3e251b03d2dede382eab3891eeab12db5550846a63dac632cdf04a7/
Threat name:
Win32.Trojan.Pwsx
Create hunting rule
Status:
Malicious
First seen:
2021-06-15 02:32:09 UTC
AV detection:
5 of 46 (10.87%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=ovorobnt4ji3apjn5xryf2vtrepovmjnwvkqqrvghwwgglg7astq._file
Verdict:
malicious
Label(s):
remcos
Create hunting rule
Similar samples:
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c39bdd8f7c69c3140ef920e2b1d5965310058c5fa425b871f4d7751d8291d55e
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c40f80c23d8ff7cf3f28c2959f7017ac88cc12f7df50669c341a9a5add4bf76a
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d7c0ef5975ecda4d1804b3e82d7eb8634f4f3f0bd3406087fc2aaa972d2d8bd8
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e0d4ce0316734fce0ea0d950f0ff1b4182f1364d581c549a199ac041cfe68ebb
RemcosRAT
+ 1'801 additional samples on MalwareBazaar
Result
Malware family:
remcos
Create hunting rule
Score:
  10/10
Tags:
family:remcos botnet:proservices persistence rat
Link:
https://tria.ge/reports/210615-jqwd7pwgb2/
Behaviour
Delays execution with timeout.exe
Modifies registry class
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Program crash
Suspicious use of NtSetInformationThreadHideFromDebugger
Suspicious use of SetThreadContext
Adds Run key to start application
Loads dropped DLL
Executes dropped EXE
Remcos
Malware Config
C2 Extraction:
databasenash2020.online:1921
Unpacked files
SH256 hash:
755d1705b3e251b03d2dede382eab3891eeab12db5550846a63dac632cdf04a7
MD5 hash:
3e362679593f940a622fe45135a5f45d
SHA1 hash:
9479d694e25e8d4d005d9dea69837f5e0e22cbaf
Link:
https://www.unpac.me/results/9b612190-9dce-40c3-8585-6ba8f0d9219e/
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Suspicious File
Score:
0.35
Link:
https://yomi.yoroi.company/submissions/755d1705b3e251b03d2dede382eab3891eeab12db5550846a63dac632cdf04a7

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:INDICATOR_SUSPICIOUS_Stomped_PECompilation_Timestamp_InTheFu
Create hunting rule
Author:ditekSHen
Description:Detect executables with stomped PE compilation timestamp that is greater than local current time
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:pe_imphash
Create hunting rule
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:Skystars_Malware_Imphash
Create hunting rule
Author:Skystars LightDefender
Description:imphash
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.

Comments