MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 fadfb7c2d67950c5459435bdf3b942a81476256efd3d54676b99e258ae7a9c50. 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: 15


Intelligence 15 IOCs YARA 4 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: fadfb7c2d67950c5459435bdf3b942a81476256efd3d54676b99e258ae7a9c50
SHA3-384 hash: e9be37fa4ee8f181d674c8ded7a265be84fc085d8c9881d9dcdbbe48ac3034986d6bfc0b32d2072c8408ce64c47408d5
SHA1 hash: 0515ba7ec600c0eb2947988a3233d01282e642fe
MD5 hash: 4f8409f8b6a0bfa40fc9975a4688b290
humanhash: jig-wolfram-ten-friend
File name:4f8409f8b6a0bfa40fc9975a4688b290N.exe
Download: download sample
Signature RemcosRAT
Create hunting rule
File size:876'544 bytes
First seen:2024-08-02 03:49:41 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash 21371b611d91188d602926b15db6bd48 (70 x Formbook, 33 x AgentTesla, 20 x RemcosRAT)
ssdeep 12288:dsHzOUNUSB/o5LsI1uwajJ5yvv1l2StdvsdQoLbthDc2CXTNyCOHxZIN8kULbkRM:0iUmSB/o5d1ubcvNSQoLbABKxHks16M
TLSH T1CA153372A481DACDF271527B30649AF7E4C6E35153A14FEA5FA0EBE2CC3877092514A1
TrID 39.1% (.EXE) UPX compressed Win32 Executable (27066/9/6)
38.3% (.EXE) Win32 EXE Yoda's Crypter (26569/9/4)
7.2% (.EXE) Win16 NE executable (generic) (5038/12/1)
6.5% (.EXE) Win32 Executable (generic) (4504/4/1)
2.9% (.EXE) OS/2 Executable (generic) (2029/13)
File icon (PE):PE icon
dhash icon 74f4d4d4cce4e8e0 (27 x AgentTesla, 19 x Formbook, 17 x DBatLoader)
Reporter nickkuechel
Tags:exe remcos RemcosRAT

Intelligence

File Origin
# of uploads :
1
# of downloads :
366
Origin country :
US US
Vendor Threat Intelligence
Malware family:
remcos
Create hunting rule
ID:
1
File name:
4f8409f8b6a0bfa40fc9975a4688b290N.exe
Verdict:
Malicious activity
Analysis date:
2024-08-02 03:52:41 UTC
Tags:
keylogger remcos rat
Link:
https://app.any.run/tasks/fc75f2ce-9efb-4fa0-b88a-aed4dc5b86e2

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Verdict:
Malicious
Score:
93.3%
Link:
https://cyber-fortress.com/docs/result/index.php?id=66ac576e037b02d0daed08ec
Tags:
Generic Stealth Trojan Malware
Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Creating a window
Creating a file in the %temp% directory
Creating a file
Creating a process from a recently created file
Сreating synchronization primitives
Connection attempt
Launching a process
Launching the default Windows debugger (dwwin.exe)
Enabling autorun by creating a file
Unauthorized injection to a system process
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
autoit lolbin microsoft_visual_cc packed packed packed remcos shell32 upx
Link:
https://www.filescan.io/uploads/66ac576b4c5c17942a818d49/reports/5f91775e-a93d-48ed-bd8d-a1b6a3856ede/overview
Verdict:
Malicious
Labled as:
Trojan.Generic
Link:
https://www.hybrid-analysis.com/sample/fadfb7c2d67950c5459435bdf3b942a81476256efd3d54676b99e258ae7a9c50
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.
Verdict:
Unknown
Link:
https://analyze.intezer.com/analyses/54c0d83c-041f-406d-8954-c84f61cac922
Result
Threat name:
Remcos
Create hunting rule
Detection:
malicious
Classification:
troj.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1486435
Signature
AI detected suspicious sample
Binary is likely a compiled AutoIt script file
C2 URLs / IPs found in malware configuration
Drops VBS files to the startup folder
Found API chain indicative of sandbox detection
Found malware configuration
Machine Learning detection for sample
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for domain / URL
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Sigma detected: Drops script at startup location
Sigma detected: WScript or CScript Dropper
Windows Scripting host queries suspicious COM object (likely to drop second stage)
Yara detected Remcos RAT
Yara detected UAC Bypass using CMSTP
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1486435 Sample: uxIPWprZx4.exe Startdate: 02/08/2024 Architecture: WINDOWS Score: 100 69 103.169.127.40.in-addr.arpa 2->69 79 Multi AV Scanner detection for domain / URL 2->79 81 Found malware configuration 2->81 83 Malicious sample detected (through community Yara rule) 2->83 85 9 other signatures 2->85 15 uxIPWprZx4.exe 6 2->15         started        19 wscript.exe 1 2->19         started        signatures3 process4 file5 67 C:\Users\user\AppData\Local\...\name.exe, PE32 15->67 dropped 71 Binary is likely a compiled AutoIt script file 15->71 73 Found API chain indicative of sandbox detection 15->73 21 name.exe 3 15->21         started        75 Windows Scripting host queries suspicious COM object (likely to drop second stage) 19->75 25 name.exe 2 19->25         started        signatures6 process7 file8 65 C:\Users\user\AppData\Roaming\...\name.vbs, data 21->65 dropped 91 Multi AV Scanner detection for dropped file 21->91 93 Binary is likely a compiled AutoIt script file 21->93 95 Drops VBS files to the startup folder 21->95 97 Found API chain indicative of sandbox detection 21->97 27 name.exe 2 21->27         started        30 name.exe 25->30         started        signatures9 process10 signatures11 103 Binary is likely a compiled AutoIt script file 27->103 32 name.exe 2 27->32         started        35 name.exe 30->35         started        process12 signatures13 77 Binary is likely a compiled AutoIt script file 32->77 37 name.exe 2 32->37         started        40 name.exe 35->40         started        process14 signatures15 89 Binary is likely a compiled AutoIt script file 37->89 42 name.exe 2 37->42         started        45 name.exe 40->45         started        process16 signatures17 101 Binary is likely a compiled AutoIt script file 42->101 47 name.exe 2 42->47         started        50 name.exe 45->50         started        process18 signatures19 107 Binary is likely a compiled AutoIt script file 47->107 52 name.exe 2 47->52         started        55 name.exe 50->55         started        process20 signatures21 87 Binary is likely a compiled AutoIt script file 52->87 57 name.exe 2 52->57         started        60 name.exe 55->60         started        process22 signatures23 99 Binary is likely a compiled AutoIt script file 57->99 62 name.exe 2 57->62         started        process24 signatures25 105 Binary is likely a compiled AutoIt script file 62->105
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/fadfb7c2d67950c5459435bdf3b942a81476256efd3d54676b99e258ae7a9c50
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/fadfb7c2d67950c5459435bdf3b942a81476256efd3d54676b99e258ae7a9c50/
Threat name:
Win32.Backdoor.Remcos
Create hunting rule
Status:
Malicious
First seen:
2024-07-26 12:06:36 UTC
File Type:
PE (Exe)
Extracted files:
22
AV detection:
24 of 38 (63.16%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=7lp3pqwwpfimkrmugw67hokcvakhmjlo7u6viz3lthrfrlt2tria._file
Verdict:
malicious
Label(s):
remcos
Create hunting rule
Result
Malware family:
n/a
Score:
  7/10
Tags:
discovery upx
Link:
https://tria.ge/reports/240802-edxl7sygng/
Behaviour
Suspicious use of FindShellTrayWindow
Suspicious use of SendNotifyMessage
Suspicious use of WriteProcessMemory
System Location Discovery: System Language Discovery
AutoIT Executable
Drops startup file
Executes dropped EXE
Loads dropped DLL
UPX packed file
Verdict:
Malicious
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/d2d4f256-198c-4cdc-b0bc-8c1ff11381da
Unpacked files
SH256 hash:
adc28ae53ef4c669bdda04221da995684bf7cddf0209e442d7e6a88aa84b93e9
MD5 hash:
f6f5870ef9c8b155ed2aab9bec935daf
SHA1 hash:
bf036f09acc8e5c8b679d09e7858dd95667cfd96
Detections:
AutoIT_Compiled
Create hunting rule
Link:
https://www.unpac.me/results/c58038f6-161e-4bd3-8ed2-aef2f1bed9aa/
SH256 hash:
5bd15df97d67b6afc73124f34828b44558658e79ee95876c682bea06de882950
MD5 hash:
0f2671dd029d2cc8a1de8757780adc07
SHA1 hash:
19198a3988706f431c98e05740e70e6c78c230b1
Detections:
Remcos
Create hunting rule
win_remcos_auto
Create hunting rule
win_remcos_w0
Create hunting rule
malware_windows_remcos_rat
Create hunting rule
Link:
https://www.unpac.me/results/c58038f6-161e-4bd3-8ed2-aef2f1bed9aa/
SH256 hash:
fadfb7c2d67950c5459435bdf3b942a81476256efd3d54676b99e258ae7a9c50
MD5 hash:
4f8409f8b6a0bfa40fc9975a4688b290
SHA1 hash:
0515ba7ec600c0eb2947988a3233d01282e642fe
Link:
https://www.unpac.me/results/c58038f6-161e-4bd3-8ed2-aef2f1bed9aa/
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:pe_detect_tls_callbacks
Create hunting rule
Rule name:UPXV200V290MarkusOberhumerLaszloMolnarJohnReiser
Create hunting rule
Author:malware-lu
Rule name:upx_largefile
Create hunting rule
Author:k3nr9

File information

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

BLint

The following table provides more information about this file using BLint. BLint is a Binary Linter to check the security properties, and capabilities in executables.

Findings
IDTitleSeverity
CHECK_AUTHENTICODEMissing Authenticodehigh
CHECK_DLL_CHARACTERISTICSMissing dll Security Characteristics (HIGH_ENTROPY_VA)high
CHECK_NXMissing Non-Executable Memory Protectioncritical
Reviews
IDCapabilitiesEvidence
AUTH_APIManipulates User AuthorizationADVAPI32.dll::GetAce
MULTIMEDIA_APICan Play MultimediaWINMM.dll::timeGetTime
WIN_BASE_APIUses Win Base APIKERNEL32.DLL::LoadLibraryA

Comments