MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 da9e45efadb2232b4c6f1ec165bd01a0c9d274f045d058b5c1376106b47b053f. 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: 18


Intelligence 18 IOCs YARA 5 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: da9e45efadb2232b4c6f1ec165bd01a0c9d274f045d058b5c1376106b47b053f
SHA3-384 hash: 7bc4d53a2ac6820450ad77a054d2646cf35eb3d6b06a344706317f3c1819ec3351d223429da5c1bbecc41109dc2d1ad1
SHA1 hash: 9b1858ad42d183226460c7f09f2a657c3ed9279a
MD5 hash: 8da358d4b7d180480aba90d78ecff7ae
humanhash: wolfram-maryland-uniform-indigo
File name:EFCR YAX1905070 Doc_pdf.exe
Download: download sample
Signature RemcosRAT
Create hunting rule
File size:902'656 bytes
First seen:2024-09-12 19:28:28 UTC
Last seen:2024-09-12 20:29:44 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'652 x AgentTesla, 19'463 x Formbook, 12'205 x SnakeKeylogger)
ssdeep 24576:qBnnC3qGtqYqAy2BGVDNE61G43uig/IhdpkE:BaG1ZBAD71GFf6w
Threatray 4'456 similar samples on MalwareBazaar
TLSH T1291522AC266ADA9DCE850BB90571E37698391F9DE153C20FCBFE5CFB34151A93C24242
TrID 71.1% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
10.2% (.EXE) Win64 Executable (generic) (10523/12/4)
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 c4d2d1c9c8d8c8f8 (13 x DarkTortilla, 5 x AgentTesla, 5 x RemcosRAT)
Reporter abuse_ch
Tags:exe RemcosRAT

Intelligence

File Origin
# of uploads :
3
# of downloads :
405
Origin country :
NL NL
Vendor Threat Intelligence
Malware family:
remcos
Create hunting rule
ID:
1
File name:
EFCR YAX1905070 Doc_pdf.exe
Verdict:
Malicious activity
Analysis date:
2024-09-12 19:45:09 UTC
Tags:
rat remcos remote evasion
Link:
https://app.any.run/tasks/4a631e82-72ab-4b40-817a-20431acc7ac3

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection(s):
SecuriteInfo.com.Trojan.PackedNET.3049.3256.15822.UNOFFICIAL
Create hunting rule

Verdict:
Malicious
Score:
99.1%
Link:
https://cyber-fortress.com/docs/result/index.php?id=66e3410a751db35a8b9f866f
Tags:
Execution Network Stealth Msil
Result
Verdict:
Malware
Maliciousness:

Behaviour
Сreating synchronization primitives
Creating a file in the %AppData% directory
Enabling the 'hidden' option for recently created files
Adding an access-denied ACE
Creating a process with a hidden window
Creating a file in the %temp% directory
Launching a process
Unauthorized injection to a recently created process
Restart of the analyzed sample
Creating a file
Setting a keyboard event handler
DNS request
Connection attempt
Sending a custom TCP request
Sending an HTTP GET request
Creating a window
Adding an exclusion to Microsoft Defender
Enabling autorun by creating a file
Verdict:
Likely Malicious
Threat level:
  7.5/10
Confidence:
100%
Tags:
masquerade overlay packed
Link:
https://www.filescan.io/uploads/66e341087e27a434ba3f0447/reports/dadc30fc-e286-4d9d-97c1-d1a7b117ea5e/overview
Verdict:
Malicious
Labled as:
Ser.Jalapeno.Generic
Link:
https://www.hybrid-analysis.com/sample/da9e45efadb2232b4c6f1ec165bd01a0c9d274f045d058b5c1376106b47b053f
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:
Suspicious
Link:
https://analyze.intezer.com/analyses/c5ba9417-5b27-43f6-9a78-b810e757522d
Result
Threat name:
Remcos
Create hunting rule
Detection:
malicious
Classification:
rans.troj.spyw.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1510370
Signature
.NET source code contains potential unpacker
Adds a directory exclusion to Windows Defender
AI detected suspicious sample
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
Found malware configuration
Initial sample is a PE file and has a suspicious name
Injects a PE file into a foreign processes
Installs a global keyboard hook
Loading BitLocker PowerShell Module
Machine Learning detection for dropped file
Machine Learning detection for sample
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Sigma detected: Powershell Base64 Encoded MpPreference Cmdlet
Sigma detected: Scheduled temp file as task from temp location
Suricata IDS alerts for network traffic
Uses schtasks.exe or at.exe to add and modify task schedules
Yara detected AntiVM3
Yara detected Remcos RAT
Yara detected UAC Bypass using CMSTP
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1510370 Sample: EFCR YAX1905070 Doc_pdf.exe Startdate: 12/09/2024 Architecture: WINDOWS Score: 100 44 UDUM.WORK.GD 2->44 46 geoplugin.net 2->46 52 Suricata IDS alerts for network traffic 2->52 54 Found malware configuration 2->54 56 Malicious sample detected (through community Yara rule) 2->56 58 14 other signatures 2->58 8 mjbXtJDvJVt.exe 5 2->8         started        11 EFCR YAX1905070 Doc_pdf.exe 7 2->11         started        signatures3 process4 file5 64 Antivirus detection for dropped file 8->64 66 Multi AV Scanner detection for dropped file 8->66 68 Contains functionality to bypass UAC (CMSTPLUA) 8->68 74 6 other signatures 8->74 14 schtasks.exe 1 8->14         started        16 mjbXtJDvJVt.exe 8->16         started        36 C:\Users\user\AppData\...\mjbXtJDvJVt.exe, PE32 11->36 dropped 38 C:\Users\...\mjbXtJDvJVt.exe:Zone.Identifier, ASCII 11->38 dropped 40 C:\Users\user\AppData\Local\...\tmp1B04.tmp, XML 11->40 dropped 42 C:\Users\...FCR YAX1905070 Doc_pdf.exe.log, ASCII 11->42 dropped 70 Adds a directory exclusion to Windows Defender 11->70 72 Injects a PE file into a foreign processes 11->72 18 EFCR YAX1905070 Doc_pdf.exe 3 16 11->18         started        22 powershell.exe 23 11->22         started        24 schtasks.exe 1 11->24         started        signatures6 process7 dnsIp8 26 conhost.exe 14->26         started        48 UDUM.WORK.GD 103.153.65.56, 2431, 49706 TWIDC-AS-APTWIDCLimitedHK unknown 18->48 50 geoplugin.net 178.237.33.50, 49707, 80 ATOM86-ASATOM86NL Netherlands 18->50 60 Installs a global keyboard hook 18->60 28 conhost.exe 18->28         started        62 Loading BitLocker PowerShell Module 22->62 30 WmiPrvSE.exe 22->30         started        32 conhost.exe 22->32         started        34 conhost.exe 24->34         started        signatures9 process10
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/da9e45efadb2232b4c6f1ec165bd01a0c9d274f045d058b5c1376106b47b053f
Detection:
remcos
Create hunting rule
Link:
https://mwdb.cert.pl/sample/da9e45efadb2232b4c6f1ec165bd01a0c9d274f045d058b5c1376106b47b053f/
Threat name:
ByteCode-MSIL.Backdoor.FormBook
Create hunting rule
Status:
Malicious
First seen:
2024-09-09 05:13:51 UTC
File Type:
PE (.Net Exe)
Extracted files:
6
AV detection:
21 of 38 (55.26%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=3kpel35nwirswtdpd3awlpibude5e5hqixifrnobg5qqnnd3au7q._file
Verdict:
malicious
Label(s):
remcos
Create hunting rule
Similar samples:
19b92161154b6d9fca60de3f5aec7e64b4b7e1a3281d60784e2403e756f46c26
RemcosRAT
1c022ec2400c0c5197aa32cef3182a09a13213dedfe1db71fc18c6d399571ed9
RemcosRAT
7c88bd71a3530b4731d6e6233d0927d8f7b01c4e97cf796fa2d53b554f1d6ed9
RemcosRAT
+ 4'446 additional samples on MalwareBazaar
Result
Malware family:
remcos
Create hunting rule
Score:
  10/10
Tags:
family:remcos botnet:udu discovery execution rat
Link:
https://tria.ge/reports/240912-x69fks1aqc/
Behaviour
Scheduled Task/Job: Scheduled Task
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of FindShellTrayWindow
Suspicious use of SendNotifyMessage
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
System Location Discovery: System Language Discovery
Suspicious use of SetThreadContext
Checks computer location settings
Command and Scripting Interpreter: PowerShell
Remcos
Malware Config
C2 Extraction:
UDUM.WORK.GD:2431
Verdict:
Malicious
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/234b7c50-5905-49da-9ee5-b6605052589e
Unpacked files
SH256 hash:
c367c03e760b49555a5813e66ce3708d32b2c6ebf950be91e09eeb3ad039ea9c
MD5 hash:
fcd4e0f70901ee195a0a688764a0f541
SHA1 hash:
2a9341d4838aa8007447e730cde2c73b951aaee7
Detections:
SUSP_OBF_NET_ConfuserEx_Name_Pattern_Jan24
Create hunting rule
SUSP_OBF_NET_Reactor_Indicators_Jan24
Create hunting rule
Link:
https://www.unpac.me/results/bbb1c195-6ef5-4721-a15b-834797dac85b/
SH256 hash:
1d1a109b77998944c66a388b31a4fe58a920159ea0c0dccc949d2e1a70d40b54
MD5 hash:
f83350803e28289aa3e5e97786a385e3
SHA1 hash:
049f2a7ed0f13acc51393fe7e31dcc97251cb8ee
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/bbb1c195-6ef5-4721-a15b-834797dac85b/
Parent samples :
7bdca91211afbb94f733d78892cf0568a79e63ef230b5dfa919966e73b26717d
fd9c0fb6f463cee4975445c4ff19301daeed95a081f0428c5ef7aad815dd7277
19b92161154b6d9fca60de3f5aec7e64b4b7e1a3281d60784e2403e756f46c26
fd289f86941e426b8116ead4b68649fac1dc3fc5611da26af9a446f911b30ea5
da9e45efadb2232b4c6f1ec165bd01a0c9d274f045d058b5c1376106b47b053f
SH256 hash:
c59a72e874640d2d2c5669edc14fdeb82a72cbacde61679907d2926b8ed79d08
MD5 hash:
b37fc99b846edbde0d0f36bee1760849
SHA1 hash:
0016396b048dcbda5b87742c32678f706db6362c
Link:
https://www.unpac.me/results/bbb1c195-6ef5-4721-a15b-834797dac85b/
SH256 hash:
da9e45efadb2232b4c6f1ec165bd01a0c9d274f045d058b5c1376106b47b053f
MD5 hash:
8da358d4b7d180480aba90d78ecff7ae
SHA1 hash:
9b1858ad42d183226460c7f09f2a657c3ed9279a
Link:
https://www.unpac.me/results/bbb1c195-6ef5-4721-a15b-834797dac85b/
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Malicious File
Score:
0.90
Link:
https://yomi.yoroi.company/submissions/da9e45efadb2232b4c6f1ec165bd01a0c9d274f045d058b5c1376106b47b053f

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 (HIGH_ENTROPY_VA)high

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