MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 f0f5332559c5b4423f52173fbbde05923b236a0d32c97ad858b25621d5bf117a. 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: 8


Intelligence 8 IOCs YARA File information Comments

SHA256 hash: f0f5332559c5b4423f52173fbbde05923b236a0d32c97ad858b25621d5bf117a
SHA3-384 hash: 86dbba5637188436e308973a08e06f7ebeaeb678bfb88303e6358561a02379a400ab04bd1523515dbb704da9a2d73346
SHA1 hash: 5211691e449023a935082445619b36f9084bd5f0
MD5 hash: 33a4a5d7e53055d3a03d57d5e4264995
humanhash: lima-quiet-chicken-nineteen
File name:Baumer RFQ 532096__pdf.exe
Download: download sample
Signature RemcosRAT
File size:1'589'592 bytes
First seen:2020-10-23 06:54:36 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'748 x AgentTesla, 19'643 x Formbook, 12'245 x SnakeKeylogger)
ssdeep 6144:Ubqv96qwHLQoXaZMrkY740THgJyCc1zgywW4o+1+WnWJmeElcMM7+Z3w8sTAZjv7:75VV
Threatray 1'242 similar samples on MalwareBazaar
TLSH 3975C252E9DAADC8E3521526734EE3A0A35B1295C57CC7A00F73C07D72CE48B9F8C59A
Reporter abuse_ch
Tags:exe RemcosRAT


Avatar
abuse_ch
Malspam distributing unidentified malware:

HELO: e-server.org
Sending IP: 111.221.44.74
From: sales.ch@baumer.com
Subject: Baumer RFQ
Attachment: Baumer RFQ 532096__pdf.zip (contains "Baumer RFQ 532096__pdf.exe")

Intelligence


File Origin
# of uploads :
1
# of downloads :
82
Origin country :
n/a
Vendor Threat Intelligence
Result
Verdict:
Malware
Maliciousness:

Behaviour
Sending a UDP request
DNS request
Creating a window
Adding an access-denied ACE
Launching a process
Creating a file
Sending a custom TCP request
Creating a file in the %AppData% subdirectories
Enabling the 'hidden' option for recently created files
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Forced shutdown of a system process
Setting a global event handler for the keyboard
Enabling autorun by creating a file
Enabling autorun
Unauthorized injection to a system process
Result
Threat name:
Detection:
malicious
Classification:
troj.adwa.spyw.evad
Score:
100 / 100
Signature
.NET source code contains very large strings
Allocates memory in foreign processes
Binary contains a suspicious time stamp
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
Country aware sample found (crashes after keyboard check)
Creates an undocumented autostart registry key
Creates autostart registry keys with suspicious names
Creates multiple autostart registry keys
Detected Remcos RAT
Drops PE files to the startup folder
Hides threads from debuggers
Initial sample is a PE file and has a suspicious name
Injects a PE file into a foreign processes
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Writes to foreign memory regions
Yara detected Remcos RAT
Behaviour
Behavior Graph:
behaviorgraph top1 signatures2 2 Behavior Graph ID: 303047 Sample: Baumer RFQ 532096__pdf.exe Startdate: 23/10/2020 Architecture: WINDOWS Score: 100 55 Malicious sample detected (through community Yara rule) 2->55 57 Multi AV Scanner detection for dropped file 2->57 59 Multi AV Scanner detection for submitted file 2->59 61 8 other signatures 2->61 6 Baumer RFQ 532096__pdf.exe 3 4 2->6         started        11 Baumer RFQ 532096__pdf.exe 2 2->11         started        13 Baumer RFQ 532096__pdf.exe 2->13         started        15 3 other processes 2->15 process3 dnsIp4 43 www.google.it 172.217.168.67 GOOGLEUS United States 6->43 37 C:\Users\user\...\Baumer RFQ 532096__pdf.exe, PE32 6->37 dropped 39 Baumer RFQ 532096_...exe:Zone.Identifier, ASCII 6->39 dropped 63 Creates an undocumented autostart registry key 6->63 65 Writes to foreign memory regions 6->65 67 Allocates memory in foreign processes 6->67 17 ilasm.exe 6->17         started        20 ilasm.exe 2 3 6->20         started        23 WerFault.exe 23 9 6->23         started        45 192.168.2.1 unknown unknown 11->45 69 Hides threads from debuggers 11->69 71 Injects a PE file into a foreign processes 11->71 25 ilasm.exe 11->25         started        27 ilasm.exe 11->27         started        29 WerFault.exe 11->29         started        33 3 other processes 13->33 73 Creates autostart registry keys with suspicious names 15->73 75 Creates multiple autostart registry keys 15->75 31 ilasm.exe 15->31         started        35 6 other processes 15->35 file5 signatures6 process7 dnsIp8 47 Contains functionality to steal Chrome passwords or cookies 17->47 49 Contains functionality to capture and log keystrokes 17->49 51 Contains functionality to inject code into remote processes 17->51 53 Contains functionality to steal Firefox passwords or cookies 17->53 41 holygrillfax.home-webserver.de 103.114.107.156, 49730, 7156 VNPT-AS-VNVIETNAMPOSTSANDTELECOMMUNICATIONSGROUPVN Viet Nam 20->41 signatures9
Threat name:
ByteCode-MSIL.Backdoor.Remcos
Status:
Malicious
First seen:
2020-10-23 01:06:12 UTC
AV detection:
21 of 29 (72.41%)
Threat level:
  5/5
Result
Malware family:
Score:
  10/10
Tags:
rat family:remcos persistence
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Suspicious behavior: GetForegroundWindowSpam
Program crash
Suspicious use of NtSetInformationThreadHideFromDebugger
Suspicious use of SetThreadContext
Adds Run key to start application
Drops startup file
Modifies WinLogon for persistence
Remcos
Malware Config
C2 Extraction:
holygrillfax.home-webserver.de:7156
Unpacked files
SH256 hash:
fa00e1cdc14fc2585e174cdbadadb4a119196e022679cce92fad5943a4bbba46
MD5 hash:
48b215622562fdb8df11b5b033c98203
SHA1 hash:
9120f3ede42ea09face667cf14f85bc7ce1409de
SH256 hash:
aa3440d72dc9f9af1520cff4fb70363d3dbe20a10112e8acb5ef5b5b645049f6
MD5 hash:
b0f68347f03fc9138ccf8df56c935f55
SHA1 hash:
0280016a78fe0a28d29f1b5c9a1f647a201372b6
Detections:
win_remcos_g0 win_remcos_auto
SH256 hash:
f0f5332559c5b4423f52173fbbde05923b236a0d32c97ad858b25621d5bf117a
MD5 hash:
33a4a5d7e53055d3a03d57d5e4264995
SHA1 hash:
5211691e449023a935082445619b36f9084bd5f0
Please note that we are no longer able to provide a coverage score for Virus Total.

File information


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

Malspam

RemcosRAT

Executable exe f0f5332559c5b4423f52173fbbde05923b236a0d32c97ad858b25621d5bf117a

(this sample)

  
Delivery method
Distributed via e-mail attachment

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