MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 39fe045b17ab2fcdb512758a431845409c29ca9341090ac81878658423c39129. 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: 17


Intelligence 17 IOCs YARA 5 File information Comments
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SHA256 hash: 39fe045b17ab2fcdb512758a431845409c29ca9341090ac81878658423c39129
SHA3-384 hash: 505b031bf908025668fcfd7533436f23a2201481effa7dc3616b8ee86a012dbe99d48fe13878ed6aee7a8f0ffd86c6ba
SHA1 hash: d0d0903f73b4aa11ee580fb6fd8d80775e6e88de
MD5 hash: 5c44a72a49fe4fbc94f1c1aa8cbf0ab6
humanhash: single-apart-iowa-tango
File name:QUOTATION #46789RFQ_SUPLM_NOV24_SALEH_CONSTRUCTIONS_LLC_PDF.exe
Download: download sample
Signature RemcosRAT
Create hunting rule
File size:1'313'280 bytes
First seen:2024-11-13 14:36:05 UTC
Last seen:2024-12-05 15:50:24 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'650 x AgentTesla, 19'462 x Formbook, 12'203 x SnakeKeylogger)
ssdeep 24576:ctcKivRdWnSyEHyfE75BP/+mgWdm/bTLLK6:LKmXWSy6r2mgxv
Threatray 38 similar samples on MalwareBazaar
TLSH T1D455BFDA6FD121A1C41A75308F5A2B0C236E9EA39D51DFD508C390B2EE35B8EDD604DE
TrID 71.1% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
10.2% (.EXE) Win64 Executable (generic) (10522/11/4)
6.3% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
4.3% (.EXE) Win32 Executable (generic) (4504/4/1)
2.0% (.ICL) Windows Icons Library (generic) (2059/9)
Magika pebin
File icon (PE):PE icon
dhash icon 74ecccccdcd4c4c8 (5 x RemcosRAT, 2 x SnakeKeylogger, 2 x GuLoader)
Reporter Anonymous
Tags:exe RemcosRAT

Intelligence

File Origin
# of uploads :
2
# of downloads :
447
Origin country :
PL PL
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
QUOTATION #46789RFQ_SUPLM_NOV24_SALEH_CONSTRUCTIONS_LLC_PDF.exe
Verdict:
Suspicious activity
Analysis date:
2024-11-13 14:58:06 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/16bdb34d-ddd4-4891-b8f9-c16ebd9ab789

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection(s):
SecuriteInfo.com.Win32.MalwareX-gen.23779.2749.UNOFFICIAL
Create hunting rule

Verdict:
Malicious
Score:
99.9%
Link:
https://cyber-fortress.com/docs/result/index.php?id=67351aa934b6906b348295e2
Tags:
remcos gumen
Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Сreating synchronization primitives
Creating a window
Running batch commands
Launching a process
Creating a file
Creating a file in the %AppData% directory
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
masquerade obfuscated vbnet
Link:
https://www.filescan.io/uploads/6734b9910448e7935751047e/reports/3a90ad75-c98b-470f-8b6b-d9a518a8ba87/overview
Verdict:
Malicious
Labled as:
Win/malicious_confidence_100%
Link:
https://www.hybrid-analysis.com/sample/39fe045b17ab2fcdb512758a431845409c29ca9341090ac81878658423c39129
Malware family:
Malicious Packer
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/3f3a7ded-8af1-49f8-89ea-f7836d7980a8
Result
Threat name:
Remcos, DarkTortilla
Create hunting rule
Detection:
malicious
Classification:
rans.phis.troj.spyw.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1555209
Signature
.NET source code contains potential unpacker
.NET source code contains very large array initializations
AI detected suspicious sample
Allocates memory in foreign processes
Antivirus / Scanner detection for submitted sample
Antivirus detection for dropped file
C2 URLs / IPs found in malware configuration
Contains functionality to bypass UAC (CMSTPLUA)
Contains functionality to register a low level keyboard hook
Contains functionality to steal Chrome passwords or cookies
Contains functionality to steal Firefox passwords or cookies
Contains functionalty to change the wallpaper
Delayed program exit found
Detected Remcos RAT
Found malware configuration
Hides that the sample has been downloaded from the Internet (zone.identifier)
Initial sample is a PE file and has a suspicious name
Injects a PE file into a foreign processes
Machine Learning detection for dropped file
Machine Learning detection for sample
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
Sigma detected: Remcos
Suricata IDS alerts for network traffic
Tries to delay execution (extensive OutputDebugStringW loop)
Tries to harvest and steal browser information (history, passwords, etc)
Tries to steal Instant Messenger accounts or passwords
Tries to steal Mail credentials (via file / registry access)
Tries to steal Mail credentials (via file registry)
Uses dynamic DNS services
Uses ping.exe to check the status of other devices and networks
Uses ping.exe to sleep
Writes to foreign memory regions
Yara detected AntiVM3
Yara detected DarkTortilla Crypter
Yara detected Remcos RAT
Yara detected UAC Bypass using CMSTP
Yara detected WebBrowserPassView password recovery tool
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1555209 Sample: QUOTATION #46789RFQ_SUPLM_N... Startdate: 13/11/2024 Architecture: WINDOWS Score: 100 55 windowslavesclient.duckdns.org 2->55 57 geoplugin.net 2->57 75 Suricata IDS alerts for network traffic 2->75 77 Found malware configuration 2->77 79 Malicious sample detected (through community Yara rule) 2->79 83 14 other signatures 2->83 9 Images.exe 3 2->9         started        12 QUOTATION #46789RFQ_SUPLM_NOV24_SALEH_CONSTRUCTIONS_LLC_PDF.exe 3 2->12         started        signatures3 81 Uses dynamic DNS services 55->81 process4 file5 99 Antivirus detection for dropped file 9->99 101 Multi AV Scanner detection for dropped file 9->101 103 Machine Learning detection for dropped file 9->103 107 4 other signatures 9->107 15 AddInProcess32.exe 3 13 9->15         started        51 QUOTATION #46789RF...ONS_LLC_PDF.exe.log, ASCII 12->51 dropped 105 Hides that the sample has been downloaded from the Internet (zone.identifier) 12->105 19 cmd.exe 3 12->19         started        22 cmd.exe 1 12->22         started        signatures6 process7 dnsIp8 59 66.63.163.134, 1604, 59521, 59523 ASN-QUADRANET-GLOBALUS United States 15->59 61 geoplugin.net 178.237.33.50, 59522, 80 ATOM86-ASATOM86NL Netherlands 15->61 63 Contains functionality to bypass UAC (CMSTPLUA) 15->63 65 Detected Remcos RAT 15->65 67 Tries to steal Mail credentials (via file registry) 15->67 73 6 other signatures 15->73 24 AddInProcess32.exe 15->24         started        27 AddInProcess32.exe 15->27         started        29 AddInProcess32.exe 2 15->29         started        40 2 other processes 15->40 47 C:\Users\user\AppData\Roaming\Images.exe, PE32 19->47 dropped 49 C:\Users\user\...\Images.exe:Zone.Identifier, ASCII 19->49 dropped 69 Uses ping.exe to sleep 19->69 31 Images.exe 2 19->31         started        42 3 other processes 19->42 71 Uses ping.exe to check the status of other devices and networks 22->71 33 PING.EXE 1 22->33         started        36 conhost.exe 22->36         started        38 reg.exe 1 1 22->38         started        file9 signatures10 process11 dnsIp12 85 Tries to steal Instant Messenger accounts or passwords 24->85 87 Tries to steal Mail credentials (via file / registry access) 24->87 89 Tries to harvest and steal browser information (history, passwords, etc) 27->89 91 Writes to foreign memory regions 31->91 93 Allocates memory in foreign processes 31->93 95 Hides that the sample has been downloaded from the Internet (zone.identifier) 31->95 97 Injects a PE file into a foreign processes 31->97 44 AddInProcess32.exe 31->44         started        53 127.0.0.1 unknown unknown 33->53 signatures13 process14 signatures15 109 Detected Remcos RAT 44->109
Score:
98%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/39fe045b17ab2fcdb512758a431845409c29ca9341090ac81878658423c39129
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/39fe045b17ab2fcdb512758a431845409c29ca9341090ac81878658423c39129/
Threat name:
Win32.Trojan.Znyonm
Create hunting rule
Status:
Malicious
First seen:
2024-11-12 23:21:32 UTC
File Type:
PE (.Net Exe)
Extracted files:
63
AV detection:
17 of 24 (70.83%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=hh7aiwyxvmx43nisowfeggcficoctsutieeqvsaypbsyii6dseuq._file
Verdict:
malicious
Label(s):
remcos
Create hunting rule
Similar samples:
064deb3a049649824ba5fe40a83eb6331bd4178cb5b847c08940794106fc3870
RemcosRAT
0d4bf4e1a47fa2cfdb5cdc23d8a2b1552c1d82c307e1eec95297e62a478d2f2d
RemcosRAT
39fe045b17ab2fcdb512758a431845409c29ca9341090ac81878658423c39129
RemcosRAT
8038ff6a41673eb151cdb7f03872c741dc762834c856d70030cd54af744e36a4
RemcosRAT
dcbcfe00290d92cfea7ff37d322cf80991016d6379888cdaf27451c6543a894c
RemcosRAT
error
RemcosRAT
f309f3761a93a216dbf027483ef67fefa7faaea1f99fd1c0da212679992959d3
RemcosRAT
+ 28 additional samples on MalwareBazaar
Result
Malware family:
remcos
Create hunting rule
Score:
  10/10
Tags:
family:remcos botnet:slaves collection discovery persistence rat
Link:
https://tria.ge/reports/241113-ry5vjatdqd/
Behaviour
Runs ping.exe
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
System Location Discovery: System Language Discovery
System Network Configuration Discovery: Internet Connection Discovery
Suspicious use of SetThreadContext
Accesses Microsoft Outlook accounts
Adds Run key to start application
Executes dropped EXE
Loads dropped DLL
Detected Nirsoft tools
NirSoft MailPassView
NirSoft WebBrowserPassView
Remcos
Remcos family
Malware Config
C2 Extraction:
windowslavesclient.duckdns.org:1604
Verdict:
Malicious
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/20238bb1-9149-434d-84d4-e92d7d8fc03a
Unpacked files
SH256 hash:
abd690ea07b919f51be053d94d34a2069a255dfe104ee239ea628e81028e9dbc
MD5 hash:
5cf175c9cc806d85d9b6ee03df548cc2
SHA1 hash:
60721c2d78d2243e6db6405716409bed451d7001
Detections:
Remcos
Create hunting rule
win_remcos_auto
Create hunting rule
win_remcos_w0
Create hunting rule
malware_windows_remcos_rat
Create hunting rule
INDICATOR_SUSPICIOUS_EXE_UACBypass_CMSTPCOM
Create hunting rule
win_remcos_rat_unpacked
Create hunting rule
Link:
https://www.unpac.me/results/fd50de28-76cb-4388-af61-106d27ac9753/
SH256 hash:
cba0ebe8f2bcbd1647a8dcc5fffdfdb1cfd67da77628254dd79017dbc30ba4d4
MD5 hash:
e152e7c9d2892661e9e9688894dba4f4
SHA1 hash:
3906d59fcf24989b89592a484d088e45a3e3f7ee
Link:
https://www.unpac.me/results/fd50de28-76cb-4388-af61-106d27ac9753/
SH256 hash:
39fe045b17ab2fcdb512758a431845409c29ca9341090ac81878658423c39129
MD5 hash:
5c44a72a49fe4fbc94f1c1aa8cbf0ab6
SHA1 hash:
d0d0903f73b4aa11ee580fb6fd8d80775e6e88de
Link:
https://www.unpac.me/results/fd50de28-76cb-4388-af61-106d27ac9753/
Malware family:
Remcos
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/39fe045b17ab/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Malicious File
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/39fe045b17ab2fcdb512758a431845409c29ca9341090ac81878658423c39129

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:NET
Create hunting rule
Author:malware-lu
Rule name:NETexecutableMicrosoft
Create hunting rule
Author:malware-lu
Rule name:pe_imphash
Create hunting rule
Rule name:Skystars_Malware_Imphash
Create hunting rule
Author:Skystars LightDefender
Description:imphash

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 (GUARD_CF)high

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