MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 757a10975c36bba76a7585f6c4f8456c2cfa999b8c9002dd09a3099de93f3901. 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: 13


Intelligence 13 IOCs YARA 13 File information Comments

SHA256 hash: 757a10975c36bba76a7585f6c4f8456c2cfa999b8c9002dd09a3099de93f3901
SHA3-384 hash: a5cbe8dc93b1c0ddd8454668f984fece30352b0c2220704faa691f2b630911182a6a3c57d41d60616c3c4d9c851a6935
SHA1 hash: 6e46160534d6142cd0d721935bb1964e7c55b216
MD5 hash: 0f437a25b3eaba231567cc145741fc26
humanhash: zebra-lima-blossom-spaghetti
File name:支付宝 - 支付宝_付款副本_Pdf.exe
Download: download sample
Signature RemcosRAT
File size:71'680 bytes
First seen:2023-08-09 16:44:05 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'742 x AgentTesla, 19'607 x Formbook, 12'242 x SnakeKeylogger)
ssdeep 768:Vc2a/B89VGuoJks5VdlPuVbZhh55LmhACVplpZSEvymCIgm0IPWL:E/S9VGuoJx5jl2xNmhAGplkKgHaK
Threatray 2'430 similar samples on MalwareBazaar
TLSH T149631901B78C9331C3A8117A65D6600CE3FED7BE2203D246ED85BD582C527D53EF96AA
TrID 67.7% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
9.7% (.EXE) Win64 Executable (generic) (10523/12/4)
6.0% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
4.6% (.EXE) Win16 NE executable (generic) (5038/12/1)
4.1% (.EXE) Win32 Executable (generic) (4505/5/1)
File icon (PE):PE icon
dhash icon 64e4c8d0f0e8d4d4 (56 x AgentTesla, 7 x RemcosRAT, 5 x NanoCore)
Reporter abuse_ch
Tags:exe RAT RemcosRAT

Intelligence


File Origin
# of uploads :
1
# of downloads :
297
Origin country :
NL NL
Vendor Threat Intelligence
Malware family:
ID:
1
File name:
支付宝 - 支付宝_付款副本_Pdf.exe
Verdict:
Malicious activity
Analysis date:
2023-08-09 16:47:00 UTC
Tags:
rat remcos remote

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

Behaviour
Creating a window
Сreating synchronization primitives
DNS request
Sending a custom TCP request
Creating a file in the %AppData% directory
Launching a process
Creating a file
Sending an HTTP GET request
Enabling autorun by creating a file
Unauthorized injection to a system process
Gathering data
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.expl.evad
Score:
100 / 100
Signature
.NET source code contains potential unpacker
C2 URLs / IPs found in malware configuration
Drops VBS files to the startup folder
Found malware configuration
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
Sigma detected: Drops script at startup location
Sigma detected: Remcos
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Writes to foreign memory regions
Yara detected Costura Assembly Loader
Yara detected Remcos RAT
Yara detected UAC Bypass using CMSTP
Behaviour
Behavior Graph:
Threat name:
Win32.Trojan.Leonem
Status:
Malicious
First seen:
2023-08-09 05:13:26 UTC
File Type:
PE (.Net Exe)
Extracted files:
5
AV detection:
17 of 38 (44.74%)
Threat level:
  5/5
Result
Malware family:
Score:
  10/10
Tags:
family:remcos botnet:remotehost rat
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Suspicious use of SetThreadContext
Drops startup file
Remcos
Malware Config
C2 Extraction:
172.96.14.57:8925
Unpacked files
SH256 hash:
757a10975c36bba76a7585f6c4f8456c2cfa999b8c9002dd09a3099de93f3901
MD5 hash:
0f437a25b3eaba231567cc145741fc26
SHA1 hash:
6e46160534d6142cd0d721935bb1964e7c55b216
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:DebuggerCheck__API
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:iexplorer_remcos
Author:iam-py-test
Description:Detect iexplorer being taken over by Remcos
Rule name:INDICATOR_SUSPICIOUS_EXE_UACBypass_CMSTPCOM
Author:ditekSHen
Description:Detects Windows exceutables bypassing UAC using CMSTP COM interfaces. MITRE (T1218.003)
Rule name:maldoc_find_kernel32_base_method_1
Author:Didier Stevens (https://DidierStevens.com)
Rule name:NET
Author:malware-lu
Rule name:NETexecutableMicrosoft
Author:malware-lu
Rule name:pe_imphash
Rule name:Remcos
Author:kevoreilly
Description:Remcos Payload
Rule name:REMCOS_RAT_variants
Rule name:Skystars_Malware_Imphash
Author:Skystars LightDefender
Description:imphash
Rule name:ThreadControl__Context
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:Windows_Trojan_Remcos_b296e965
Author:Elastic Security
Rule name:win_remcos_auto
Author:Felix Bilstein - yara-signator at cocacoding dot com
Description:Detects win.remcos.

File information


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

Malspam

RemcosRAT

Executable exe 757a10975c36bba76a7585f6c4f8456c2cfa999b8c9002dd09a3099de93f3901

(this sample)

  
Delivery method
Distributed via e-mail attachment

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