MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 17bb1028f9d0ed56ea18c4c3ebde034d105532bc191f9214e1f5971a747f6447. 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 9 File information Comments

SHA256 hash: 17bb1028f9d0ed56ea18c4c3ebde034d105532bc191f9214e1f5971a747f6447
SHA3-384 hash: 787f50cf3f8bdfeb0ff30a939e0f89ca8b850e3c3751489ea95880f326514b3acaa5a66e1f2eb74e2087528088052afd
SHA1 hash: ed97a91ba32692641199543a7129e6708a41dc26
MD5 hash: 84e06c1d9614393007b2801d32e2d391
humanhash: apart-missouri-football-pluto
File name:libcrypto-1_1.sfx.exe
Download: download sample
Signature RemcosRAT
File size:2'375'543 bytes
First seen:2020-12-25 17:42:43 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash fcf1390e9ce472c7270447fc5c61a0c1 (863 x DCRat, 118 x NanoCore, 94 x njrat)
ssdeep 49152:qeSJwQvTer74mYJMK+QAMslPxThz5NhrpekQzn:qeuv4UWfVMslPphz5NhrGn
Threatray 1'558 similar samples on MalwareBazaar
TLSH 2CB5234179D480B3C2222D3A6C35EB255D397D105F189EEF73E46A2EEA352C1A634B73
Reporter o2genum
Tags:RemcosRAT


Avatar
o2genum
Clean EXE with infected DLL, packed into WinRAR SFX for analysis.

Intelligence


File Origin
# of uploads :
1
# of downloads :
511
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
libcrypto-1_1.sfx.exe
Verdict:
Malicious activity
Analysis date:
2020-12-25 17:45:28 UTC
Tags:
n/a

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Searching for the window
Creating a file in the %temp% subdirectories
Creating a process from a recently created file
Launching a process
Transferring files using the Background Intelligent Transfer Service (BITS)
DNS request
Sending a custom TCP request
Sending a UDP request
Creating a file
Enabling the 'hidden' option for files in the %temp% directory
Moving a recently created file
Launching cmd.exe command interpreter
Connection attempt
Unauthorized injection to a system process
Setting a global event handler for the keyboard
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:
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Signature
Allocates memory in foreign processes
Contains functionality to capture and log keystrokes
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
Hijacks the control flow in another process
Malicious sample detected (through community Yara rule)
Maps a DLL or memory area into another process
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Overwrites code with unconditional jumps - possibly settings hooks in foreign process
Writes to foreign memory regions
Yara detected Remcos RAT
Behaviour
Behavior Graph:
behaviorgraph top1 signatures2 2 Behavior Graph ID: 334099 Sample: libcrypto-1_1.sfx.exe Startdate: 25/12/2020 Architecture: WINDOWS Score: 100 27 Malicious sample detected (through community Yara rule) 2->27 29 Multi AV Scanner detection for dropped file 2->29 31 Multi AV Scanner detection for submitted file 2->31 33 2 other signatures 2->33 8 libcrypto-1_1.sfx.exe 10 2->8         started        process3 file4 21 C:\Users\user\AppData\Local\Temp\...\mdrs.exe, PE32 8->21 dropped 23 C:\Users\user\AppData\...\libcrypto-1_1.dll, PE32 8->23 dropped 11 mdrs.exe 8->11         started        process5 signatures6 43 Overwrites code with unconditional jumps - possibly settings hooks in foreign process 11->43 45 Hijacks the control flow in another process 11->45 47 Writes to foreign memory regions 11->47 49 Allocates memory in foreign processes 11->49 14 extrac32.exe 11->14         started        process7 signatures8 51 Overwrites code with unconditional jumps - possibly settings hooks in foreign process 14->51 53 Hijacks the control flow in another process 14->53 55 Writes to foreign memory regions 14->55 57 2 other signatures 14->57 17 cmd.exe 2 3 14->17         started        process9 dnsIp10 25 95.217.144.93, 49731, 49732, 49733 HETZNER-ASDE Germany 17->25 35 Overwrites code with unconditional jumps - possibly settings hooks in foreign process 17->35 37 Contains functionality to steal Chrome passwords or cookies 17->37 39 Contains functionality to capture and log keystrokes 17->39 41 2 other signatures 17->41 signatures11
Threat name:
Win32.Trojan.Bulz
Status:
Malicious
First seen:
2020-12-25 17:43:06 UTC
AV detection:
17 of 48 (35.42%)
Threat level:
  5/5
Result
Malware family:
Score:
  10/10
Tags:
family:remcos rat
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Loads dropped DLL
Blocklisted process makes network request
Executes dropped EXE
Remcos
Malware Config
C2 Extraction:
95.217.144.93:5865
Unpacked files
SH256 hash:
17bb1028f9d0ed56ea18c4c3ebde034d105532bc191f9214e1f5971a747f6447
MD5 hash:
84e06c1d9614393007b2801d32e2d391
SHA1 hash:
ed97a91ba32692641199543a7129e6708a41dc26
SH256 hash:
6a8f5a5c13d168cac6f34e46dca175b134bb21e850da36122945885fa4d3cc35
MD5 hash:
cb23f436a8ac8cc89e9971484a0d7e29
SHA1 hash:
d6aeb3f527194fcf16d481598f895753b4360fff
SH256 hash:
7aef5998afbb459e1e5ab71966d8d5cf2bb00107b0e59e81934d0cbc22c18839
MD5 hash:
067868a646f8dd235b082e8896fe5186
SHA1 hash:
9ada873ebf7b410d09f5d33f66482bd0ae6be4eb
SH256 hash:
3151d5aeec57edd43d4fd38cafe7f37f74d5f08f73fe90fcc40f6621101a09e3
MD5 hash:
d0e7de2abad059ff0541b3684e52a40e
SHA1 hash:
5a565592fe1725d546f7dec6f645071abd27b775
Please 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
Author:abuse.ch
Rule name:Chrome_stealer_bin_mem
Author:James_inthe_box
Description:Chrome in files like avemaria
Rule name:INDICATOR_SUSPICIOUS_EXE_UACBypass_EventViewer
Author:ditekSHen
Description:detects Windows exceutables potentially bypassing UAC using eventvwr.exe
Rule name:Keylog_bin_mem
Author:James_inthe_box
Description:Contains Keylog
Rule name:Parallax
Author:@bartblaze
Description:Identifies Parallax RAT.
Rule name:Remcos
Author:JPCERT/CC Incident Response Group
Description:detect Remcos in memory
Rule name:remcos_rat
Author:jeFF0Falltrades
Rule name:REMCOS_RAT_variants
Rule name:win_remcos_auto
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