MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 1b2e5587a5c7c8b8894207790718cc7f29d6e8ed3e1a30eea8a79b5516a6f5d6. 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 9 File information Comments
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SHA256 hash: 1b2e5587a5c7c8b8894207790718cc7f29d6e8ed3e1a30eea8a79b5516a6f5d6
SHA3-384 hash: 546a9b3a1598dd6dd67c48c3f1a39f2978ac373bda11bbc0e6e0cff20429602a7a6806887a9a8de649bb785ce9d6f67f
SHA1 hash: 4d0ccbcb5513a928f33f7e0aa3ff10eebf38861e
MD5 hash: a1127592f60b591ab5a36184253b6692
humanhash: william-bluebird-ack-gee
File name:a1127592f60b591ab5a36184253b6692.exe
Download: download sample
Signature RemcosRAT
Create hunting rule
File size:151'552 bytes
First seen:2021-03-16 19:21:51 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash 82f3154e4b314b6810b189c7a61b6a27 (5 x GuLoader, 2 x RemcosRAT)
ssdeep 3072:UzXSW6fdM81H1nYa55yWQgrBt18ca8Hh1uPHODVvQ:M6VDxYuQgrBt18ca8Hh1uPH
Threatray 440 similar samples on MalwareBazaar
TLSH 3DE34A03B2015CBCD5493570011EEAB63662ECB185909F6375A8FE2BE8BD1D12EE5F1E
Reporter abuse_ch
Tags:exe RAT RemcosRAT


Avatar
abuse_ch
RemcosRAT C2:
ghdyuienah123.freedynamicdns.org

Intelligence

File Origin
# of uploads :
1
# of downloads :
190
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
c95099a4ed30eaac98033106232928cc39923d2eb84ea22f2c1d1af701a4c8c4
Verdict:
Malicious activity
Analysis date:
2021-03-16 04:22:32 UTC
Tags:
exploit CVE-2017-11882 loader opendir trojan guloader rat remcos keylogger
Link:
https://app.any.run/tasks/d5853ead-9af1-4925-abcb-fdb2c901e46e

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
Guloader
Create hunting rule
Link:
https://www.capesandbox.com/analysis/124409/
Detection(s):
SecuriteInfo.com.__vbaHresultCheckObj.26211.5921.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Unauthorized injection to a recently created process
Sending a UDP request
DNS request
Creating a file in the %AppData% directory
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
Deleting a recently created file
Running batch commands
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Sending an HTTP GET 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:
Generic Malware
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/4773d71e-ed35-4483-bb4f-992be5e9bb87
Result
Threat name:
Remcos GuLoader
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/641400
Signature
Contains functionality to hide a thread from the debugger
Detected RDTSC dummy instruction sequence (likely for instruction hammering)
Hides threads from debuggers
Multi AV Scanner detection for domain / URL
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Sigma detected: Remcos
Tries to detect Any.run
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Tries to detect virtualization through RDTSC time measurements
Yara detected GuLoader
Yara detected Remcos RAT
Yara detected VB6 Downloader Generic
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 369673 Sample: nafDSg7Mb8.exe Startdate: 16/03/2021 Architecture: WINDOWS Score: 100 51 Multi AV Scanner detection for domain / URL 2->51 53 Multi AV Scanner detection for submitted file 2->53 55 Yara detected GuLoader 2->55 57 4 other signatures 2->57 10 nafDSg7Mb8.exe 1 2->10         started        13 win.exe 1 2->13         started        15 win.exe 1 2->15         started        process3 signatures4 67 Detected RDTSC dummy instruction sequence (likely for instruction hammering) 10->67 69 Tries to detect Any.run 10->69 71 Tries to detect virtualization through RDTSC time measurements 10->71 73 Contains functionality to hide a thread from the debugger 10->73 17 nafDSg7Mb8.exe 4 10 10->17         started        75 Hides threads from debuggers 13->75 22 win.exe 6 13->22         started        24 win.exe 6 15->24         started        process5 dnsIp6 43 mtspsmjeli.sch.id 103.150.60.242, 49739, 49747, 49749 PC24NET-AS-IDPTPC24TelekomunikasiIndonesiaID unknown 17->43 39 C:\Users\user\AppData\Roaming\win.exe, PE32 17->39 dropped 41 C:\Users\user\...\win.exe:Zone.Identifier, ASCII 17->41 dropped 59 Tries to detect Any.run 17->59 61 Hides threads from debuggers 17->61 26 wscript.exe 1 17->26         started        file7 signatures8 process9 process10 28 cmd.exe 1 26->28         started        process11 30 win.exe 1 28->30         started        33 conhost.exe 28->33         started        signatures12 77 Multi AV Scanner detection for dropped file 30->77 79 Detected RDTSC dummy instruction sequence (likely for instruction hammering) 30->79 81 Tries to detect Any.run 30->81 83 2 other signatures 30->83 35 win.exe 2 7 30->35         started        process13 dnsIp14 45 mtspsmjeli.sch.id 35->45 47 ghdyuienah123.freedynamicdns.org 46.243.237.116, 2006 M247GB Netherlands 35->47 49 192.168.2.1 unknown unknown 35->49 63 Tries to detect Any.run 35->63 65 Hides threads from debuggers 35->65 signatures15
Detection:
guloader
Create hunting rule
Link:
https://mwdb.cert.pl/sample/1b2e5587a5c7c8b8894207790718cc7f29d6e8ed3e1a30eea8a79b5516a6f5d6/
Threat name:
Win32.Trojan.Vebzenpak
Create hunting rule
Status:
Malicious
First seen:
2021-03-15 17:25:47 UTC
AV detection:
22 of 28 (78.57%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=dmxflb5fy7elrckca54qoggmp4u5n2hnhyndb3viu6nvkfvg6xla._file
Verdict:
malicious
Label(s):
guloader
Create hunting rule
Similar samples:
04c950e9fb1cf6ff2de10fd17f04191f8e938189766482ef856efa2581df8dbb
RemcosRAT
0953e54968ca9407a172c0a35a00d8b30ec603770809bbd2901a070e1b83b7f8
RemcosRAT
1ed998332afc95e5830817b9f215468c55e67cd134c920b497521042bd6d4c38
RemcosRAT
21ba0bed0b05a2ce68496e73a5c103fb5b815ac2c77e997f46e5d09666c1c978
RemcosRAT
3d3095586bf72d6b631e44681654c68707a6f07987b02e367e7d88ac9ddab77c
RemcosRAT
411e56b415d4c23a741958c3f1ada72b3e958c078d27c339678bb690b7a895c3
RemcosRAT
6aca638f8c9405c4c02bb3f2b5f5e5bc9d5596f8c68a57fb99347031415b584b
RemcosRAT
6c131f342e8226706ba1b39cc955852b022130c14ea12bd3b3cf340bbea25bf6
RemcosRAT
7c201535a28746b62adfa831cfccac096903f5b17ee83b8364fc890fa70a59fd
RemcosRAT
b7d74de8e9514ca3fbfa4676be4433069bc913f86953a79d40c6272d5077242c
RemcosRAT
+ 430 additional samples on MalwareBazaar
Result
Malware family:
remcos
Create hunting rule
Score:
  10/10
Tags:
family:remcos persistence rat
Link:
https://tria.ge/reports/210316-9yaafc7axn/
Behaviour
Modifies registry class
Suspicious behavior: MapViewOfSection
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Suspicious use of NtSetInformationThreadHideFromDebugger
Suspicious use of SetThreadContext
Adds Run key to start application
Checks QEMU agent file
Loads dropped DLL
Executes dropped EXE
Remcos
Unpacked files
SH256 hash:
49b04162c412105ab0857de16713724cbf3234a0b6ba51f3a5286312633f20c3
MD5 hash:
1f1b425190b2fb0396ad2d538b1060ba
SHA1 hash:
413f98641d46fdcabfcaf64f29495667de6282ea
Link:
https://www.unpac.me/results/9c688747-62d2-4bfd-8212-bc5c38cc33c0/
SH256 hash:
1b2e5587a5c7c8b8894207790718cc7f29d6e8ed3e1a30eea8a79b5516a6f5d6
MD5 hash:
a1127592f60b591ab5a36184253b6692
SHA1 hash:
4d0ccbcb5513a928f33f7e0aa3ff10eebf38861e
Link:
https://www.unpac.me/results/9c688747-62d2-4bfd-8212-bc5c38cc33c0/
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Legit
Score:
0.16
Link:
https://yomi.yoroi.company/submissions/1b2e5587a5c7c8b8894207790718cc7f29d6e8ed3e1a30eea8a79b5516a6f5d6

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:Parallax
Create hunting rule
Author:@bartblaze
Description:Identifies Parallax RAT.
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.

Web download

RemcosRAT

Executable exe 1b2e5587a5c7c8b8894207790718cc7f29d6e8ed3e1a30eea8a79b5516a6f5d6

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/1016366/
  
URLhaus
https://urlhaus.abuse.ch/url/1069566/
  
Delivery method
Distributed via web download
Cape
Cape
https://www.capesandbox.com/analysis/124409/

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