MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 0dbc7401908f4c77ba9380f1f1d04ee61734a6116331745cd09d88ac368a2736. 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 1 YARA 9 File information Comments 1

SHA256 hash: 0dbc7401908f4c77ba9380f1f1d04ee61734a6116331745cd09d88ac368a2736
SHA3-384 hash: aa7309b97015121d3080a5f5085811b93856fd271e273f6b549c03ff3ec17eaa1c7f9ab3b40f1455116c536012ab7d2f
SHA1 hash: a307c6454e7e8c11693fcbeb2ebaada1884293f8
MD5 hash: 97aeb99ca82049add85417ceacf05b7f
humanhash: timing-speaker-video-shade
File name:RECHNUNGSKAUF Bestellung-46509008.pdf.exe
Download: download sample
Signature RemcosRAT
File size:198'804 bytes
First seen:2021-05-20 10:25:40 UTC
Last seen:2021-05-20 11:13:50 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash 099c0646ea7282d232219f8807883be0 (476 x Formbook, 210 x Loki, 107 x AgentTesla)
ssdeep 3072:MQIURTXJV0kuMmZULl8kk0pWRfp03ZMLGlfG1sc80mdF8KWTbqgRGAbH:MsxjFukkxeu1sc8XgVTbD/bH
Threatray 1'785 similar samples on MalwareBazaar
TLSH C114021271EA9CF7E52E0FB251B3D375BB769D2412420B0F67913F3B65702038A269A9
Reporter abuse_ch
Tags:exe RAT RemcosRAT


Avatar
abuse_ch
RemcosRAT C2:
23.105.131.132:6555

Indicators Of Compromise (IOCs)


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

IOCThreatFox Reference
23.105.131.132:6555 https://threatfox.abuse.ch/ioc/49744/

Intelligence


File Origin
# of uploads :
2
# of downloads :
146
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
RECHNUNGSKAUF Bestellung-46509008.pdf.exe
Verdict:
Malicious activity
Analysis date:
2021-05-20 10:50:11 UTC
Tags:
installer rat remcos trojan

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

Behaviour
Creating a file in the %temp% directory
Creating a file
Creating a file in the %AppData% subdirectories
Creating a window
Sending a UDP request
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Forced shutdown of a system process
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
C2 URLs / IPs found in malware configuration
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
Found malware configuration
Icon mismatch, binary includes an icon from a different legit application in order to fool users
Initial sample is a PE file and has a suspicious name
Malicious sample detected (through community Yara rule)
Maps a DLL or memory area into another process
Multi AV Scanner detection for dropped file
Sigma detected: Dridex Process Pattern
Sigma detected: Suspicious Double Extension
Sigma detected: Suspicious Svchost Process
System process connects to network (likely due to code injection or exploit)
Uses an obfuscated file name to hide its real file extension (double extension)
Uses dynamic DNS services
Writes to foreign memory regions
Yara detected Remcos RAT
Behaviour
Behavior Graph:
behaviorgraph top1 signatures2 2 Behavior Graph ID: 418453 Sample: RECHNUNGSKAUF  Bestellung-4... Startdate: 20/05/2021 Architecture: WINDOWS Score: 100 39 Found malware configuration 2->39 41 Malicious sample detected (through community Yara rule) 2->41 43 Icon mismatch, binary includes an icon from a different legit application in order to fool users 2->43 45 9 other signatures 2->45 7 RECHNUNGSKAUF  Bestellung-46509008.pdf.exe 1 23 2->7         started        10 rfthlhfptic.exe 18 2->10         started        process3 file4 29 C:\Users\user\AppData\...\rfthlhfptic.exe, PE32 7->29 dropped 31 C:\Users\user\AppData\Local\...\System.dll, PE32 7->31 dropped 13 svchost.exe 7->13         started        16 RECHNUNGSKAUF  Bestellung-46509008.pdf.exe 19 7->16         started        33 C:\Users\user\AppData\Local\...\System.dll, PE32 10->33 dropped 35 C:\Users\user\AppData\Local\Temp\nabffupeo, DOS 10->35 dropped 49 Multi AV Scanner detection for dropped file 10->49 19 rfthlhfptic.exe 9 10->19         started        21 svchost.exe 10->21         started        signatures5 process6 file7 51 System process connects to network (likely due to code injection or exploit) 13->51 53 Contains functionality to steal Chrome passwords or cookies 13->53 55 Contains functionality to capture and log keystrokes 13->55 61 2 other signatures 13->61 27 C:\Users\user\AppData\Local\...\System.dll, PE32 16->27 dropped 57 Writes to foreign memory regions 16->57 59 Maps a DLL or memory area into another process 16->59 23 svchost.exe 2 16->23         started        signatures8 process9 dnsIp10 37 wealth1234.ddns.net 23.105.131.132, 49720, 6555 LEASEWEB-USA-NYC-11US United States 23->37 47 System process connects to network (likely due to code injection or exploit) 23->47 signatures11
Threat name:
Win32.Trojan.AgentTesla
Status:
Malicious
First seen:
2021-05-20 10:26:16 UTC
File Type:
PE (Exe)
Extracted files:
4
AV detection:
16 of 47 (34.04%)
Threat level:
  5/5
Result
Malware family:
Score:
  10/10
Tags:
family:remcos persistence rat
Behaviour
Suspicious behavior: MapViewOfSection
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Suspicious use of SetThreadContext
Adds Run key to start application
Loads dropped DLL
Remcos
Malware Config
C2 Extraction:
wealth1234.ddns.net:6555
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



Avatar
a̵c̵c̸i̵d̷e̵n̷t̴a̷l̴r̵e̷b̸e̴l̸ commented on 2021-05-20 11:04:28 UTC

============================================================
MBC behaviors list (github.com/accidentalrebel/mbcscan):
============================================================
0) [C0032.001] Data Micro-objective::CRC32::Checksum
1) [C0026.002] Data Micro-objective::XOR::Encode Data
3) [C0045] File System Micro-objective::Copy File
4) [C0046] File System Micro-objective::Create Directory
5) [C0048] File System Micro-objective::Delete Directory
6) [C0047] File System Micro-objective::Delete File
7) [C0049] File System Micro-objective::Get File Attributes
8) [C0051] File System Micro-objective::Read File
9) [C0050] File System Micro-objective::Set File Attributes
10) [C0052] File System Micro-objective::Writes File
11) [E1510] Impact::Clipboard Modification
12) [C0036.004] Operating System Micro-objective::Create Registry Key::Registry
13) [C0036.002] Operating System Micro-objective::Delete Registry Key::Registry
14) [C0036.007] Operating System Micro-objective::Delete Registry Value::Registry
15) [C0036.003] Operating System Micro-objective::Open Registry Key::Registry
16) [C0036.005] Operating System Micro-objective::Query Registry Key::Registry
17) [C0036.006] Operating System Micro-objective::Query Registry Value::Registry
18) [C0036.001] Operating System Micro-objective::Set Registry Key::Registry
19) [C0017] Process Micro-objective::Create Process
20) [C0038] Process Micro-objective::Create Thread
21) [C0018] Process Micro-objective::Terminate Process