MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 877b28707372fb7365c52a314233c74877045cf1d8143fe83fb257f0bf90c248. 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


XpertRAT


Vendor detections: 8


Intelligence 8 IOCs YARA 4 File information Comments 1
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 877b28707372fb7365c52a314233c74877045cf1d8143fe83fb257f0bf90c248
SHA3-384 hash: b804e0ebfcc7f129f2529ca0879d4195c2dddf6b93b60a6cd44ceb4408fe5a34bd7ae788666722013684ddb12e3f0ea6
SHA1 hash: da931ab637a622626fc2fb8a326fd6ccce931f66
MD5 hash: 00279cce20bb484f9ea1b89efc6be08e
humanhash: crazy-finch-sierra-mobile
File name:00279cce20bb484f9ea1b89efc6be08e.exe
Download: download sample
Signature XpertRAT
Create hunting rule
File size:940'544 bytes
First seen:2021-04-22 10:25:24 UTC
Last seen:2021-04-22 11:15:46 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'652 x AgentTesla, 19'463 x Formbook, 12'204 x SnakeKeylogger)
ssdeep 12288:tgf61+0+aqjXQTrIqwFPEhSa3jp8UvgexUKRHYzqNxnWxmb4JK+tGs6+/fdHH5VH:qiUaNP8PYXjyQgYUKCzi/bEK+O+JHf
TLSH 32152289336035AEC43BCF7189A96D2066303A736B03C50B516B155E6E2EFC7DA11BB7
Reporter abuse_ch
Tags:exe XpertRAT

Intelligence

File Origin
# of uploads :
2
# of downloads :
191
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
00279cce20bb484f9ea1b89efc6be08e.exe
Verdict:
Malicious activity
Analysis date:
2021-04-22 10:31:36 UTC
Tags:
trojan rat xpertrat stealer
Link:
https://app.any.run/tasks/6cb897d1-ab4b-4d10-889b-8fe8271c2a5d

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
XpertRAT
Create hunting rule
Link:
https://www.capesandbox.com/analysis/143682/
Detection(s):
SecuriteInfo.com.Scr.Malcodegdn30.30799.4944.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Sending a UDP request
Creating a file
Launching a process
Creating a file in the %AppData% subdirectories
Enabling the 'hidden' option for recently created files
Creating a file in the %temp% directory
DNS request
Sending a custom TCP request
Using the Windows Management Instrumentation requests
Deleting a recently created file
Replacing files
Reading critical registry keys
Unauthorized injection to a recently created process
Blocking the User Account Control
Unauthorized injection to a recently created process by context flags manipulation
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Stealing user critical data
Enabling autorun
Result
Verdict:
UNKNOWN
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:
MailPassView XpertRAT
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/692797
Signature
Changes security center settings (notifications, updates, antivirus, firewall)
Creates an undocumented autostart registry key
Creates autostart registry keys with suspicious names
Detected unpacking (creates a PE file in dynamic memory)
Disables user account control notifications
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)
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Yara detected AntiVM3
Yara detected Generic Dropper
Yara detected MailPassView
Yara detected WebBrowserPassView password recovery tool
Yara detected XpertRAT
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 395330 Sample: juFSQ6AmWQ.exe Startdate: 22/04/2021 Architecture: WINDOWS Score: 100 59 Malicious sample detected (through community Yara rule) 2->59 61 Multi AV Scanner detection for submitted file 2->61 63 Yara detected MailPassView 2->63 65 6 other signatures 2->65 9 juFSQ6AmWQ.exe 3 2->9         started        13 U4G3L113-M7Y0-X0M5-M3D5-U8C7U551Q8Q7.exe 3 2->13         started        15 U4G3L113-M7Y0-X0M5-M3D5-U8C7U551Q8Q7.exe 2 2->15         started        17 U4G3L113-M7Y0-X0M5-M3D5-U8C7U551Q8Q7.exe 2 2->17         started        process3 file4 55 C:\Users\user\AppData\...\juFSQ6AmWQ.exe.log, ASCII 9->55 dropped 75 Detected unpacking (creates a PE file in dynamic memory) 9->75 77 Injects a PE file into a foreign processes 9->77 19 juFSQ6AmWQ.exe 1 1 9->19         started        79 Multi AV Scanner detection for dropped file 13->79 81 Machine Learning detection for dropped file 13->81 22 U4G3L113-M7Y0-X0M5-M3D5-U8C7U551Q8Q7.exe 1 13->22         started        24 U4G3L113-M7Y0-X0M5-M3D5-U8C7U551Q8Q7.exe 13->24         started        26 U4G3L113-M7Y0-X0M5-M3D5-U8C7U551Q8Q7.exe 15->26         started        28 U4G3L113-M7Y0-X0M5-M3D5-U8C7U551Q8Q7.exe 1 17->28         started        30 U4G3L113-M7Y0-X0M5-M3D5-U8C7U551Q8Q7.exe 17->30         started        signatures5 process6 signatures7 71 Changes security center settings (notifications, updates, antivirus, firewall) 19->71 73 Disables user account control notifications 19->73 32 iexplore.exe 3 8 19->32         started        process8 dnsIp9 57 kapasky-antivirus.firewall-gateway.net 45.85.90.92, 2054, 49721, 49723 ASN-GIGENETUS Netherlands 32->57 51 U4G3L113-M7Y0-X0M5-M3D5-U8C7U551Q8Q7.exe, PE32 32->51 dropped 53 C:\...\U4G3L113-M7Y0-X0M5-M3D5-U8C7U551Q8Q7, data 32->53 dropped 67 Creates an undocumented autostart registry key 32->67 69 Creates autostart registry keys with suspicious names 32->69 37 iexplore.exe 32->37         started        39 iexplore.exe 32->39         started        41 iexplore.exe 32->41         started        43 5 other processes 32->43 file10 signatures11 process12 process13 45 WerFault.exe 37->45         started        47 WerFault.exe 39->47         started        49 WerFault.exe 41->49         started       
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/877b28707372fb7365c52a314233c74877045cf1d8143fe83fb257f0bf90c248/
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
Create hunting rule
Status:
Malicious
First seen:
2021-04-22 10:31:16 UTC
File Type:
PE (.Net Exe)
Extracted files:
18
AV detection:
26 of 47 (55.32%)
Threat level:
  5/5
Result
Malware family:
xpertrat
Create hunting rule
Score:
  10/10
Tags:
family:xpertrat evasion persistence rat trojan upx
Link:
https://tria.ge/reports/210422-bn2yjb75we/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
System policy modification
Suspicious use of SetThreadContext
Adds Run key to start application
Checks whether UAC is enabled
Windows security modification
Adds policy Run key to start application
UPX packed file
NirSoft MailPassView
NirSoft WebBrowserPassView
Nirsoft
UAC bypass
Windows security bypass
XpertRAT
XpertRAT Core Payload
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/877b28707372fb7365c52a314233c74877045cf1d8143fe83fb257f0bf90c248

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:Keylog_bin_mem
Create hunting rule
Author:James_inthe_box
Description:Contains Keylog
Rule name:MALWARE_Win_XpertRAT
Create hunting rule
Author:ditekSHen
Description:XpertRAT payload
Rule name:win_xpertrat_a0
Create hunting rule
Author:Slavo Greminger, SWITCH-CERT
Rule name:win_xpertrat_auto
Create hunting rule
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.

Web download

XpertRAT

Executable exe 877b28707372fb7365c52a314233c74877045cf1d8143fe83fb257f0bf90c248

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/1143865/
  
Delivery method
Distributed via web download
Cape
Cape
https://www.capesandbox.com/analysis/143682/

Comments


Avatar
a̵c̵c̸i̵d̷e̵n̷t̴a̷l̴r̵e̷b̸e̴l̸ commented on 2021-04-22 11:00:52 UTC

============================================================
MBC behaviors list (github.com/accidentalrebel/mbcscan):
============================================================
0) [B0009.029] Anti-Behavioral Analysis::Instruction Testing