MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 88b664781d7b10fc5130cf6453fbde5b26b129f0e2f5e002d62be833b0fcd020. 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 2 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 88b664781d7b10fc5130cf6453fbde5b26b129f0e2f5e002d62be833b0fcd020
SHA3-384 hash: 2ae05b8f0150386abc921ed712937f1a6c8b30ebe1a360c0a8a48d14de379bcb847f504ae11ca7f5e3c43e15a0c91c60
SHA1 hash: 3c280b0e41b375b1748884eb1e3413c79f8c5c9a
MD5 hash: 2f7687172e06c6868282ba3e1428aaeb
humanhash: oscar-uniform-robin-nevada
File name:gunzipped
Download: download sample
Signature XpertRAT
Create hunting rule
File size:783'872 bytes
First seen:2020-10-27 09:57:38 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'649 x AgentTesla, 19'452 x Formbook, 12'202 x SnakeKeylogger)
ssdeep 12288:xdhTx0oO5+cMJlviaXkb4XCYHaNwOFI5EUfHosCh7EzYC0u:3lJsaXk8XCYHaNc5VIrOcn
Threatray 2'819 similar samples on MalwareBazaar
TLSH D2F4CFD4F250F8EDD42BC036C974AC2456032B7EA26A463F2057205D65BF3839ABBD5B
Reporter abuse_ch
Tags:nVpn RAT XpertRAT


Avatar
abuse_ch
Malspam distributing XpertRAT:

HELO: 32490AF.online-server.cloud
Sending IP: 82.223.103.239
From: Acerlogistica.com <administracion@acerlogistica.com>
Subject: Envío F4414
Attachment: F4414_pdf.gz (contains "gunzipped")

XpertRAT C2:
185.244.30.211:4576

Hosted on nVpn:

% Information related to '185.244.30.0 - 185.244.30.255'

% Abuse contact for '185.244.30.0 - 185.244.30.255' is 'abuse@privacyfirst.sh'

inetnum: 185.244.30.0 - 185.244.30.255
remarks: This prefix is assigned to The PRIVACYFIRST Project, which
remarks: operates infrastructure jointly used by various VPN service
remarks: providers. We have a very strong focus on privacy and freedom.
remarks: In case of abuse, we encourage all international law enforcement
remarks: agencies to get in touch with our abuse contact. Due to the fact
remarks: that we keep no logs of user activities and only share data when
remarks: it is legally required under our jurisdiction, it is very unlikely
remarks: for a demand of user information to be successful. Still, that
remarks: should not deter you from reaching out.
netname: PRIVACYFIRST-HU
country: HU
admin-c: TPP15-RIPE
tech-c: TPP15-RIPE
org: ORG-TPP6-RIPE
status: ASSIGNED PA
mnt-by: PRIVACYFIRST-MNT
created: 2019-10-29T14:10:27Z
last-modified: 2020-10-07T21:39:48Z
source: RIPE

Intelligence

File Origin
# of uploads :
1
# of downloads :
94
Origin country :
n/a
Vendor Threat Intelligence
Detection:
XpertRAT
Create hunting rule
Link:
https://www.capesandbox.com/analysis/79759/
Detection(s):
Win.Trojan.Hzzv-7433640-0
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Sending a UDP request
Creating a file
Launching a process
Launching the default Windows debugger (dwwin.exe)
Creating a file in the %AppData% subdirectories
Enabling the 'hidden' option for recently created files
Creating a file in the %temp% directory
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
Unauthorized injection to a system process
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Sending a TCP request to an infection source
Stealing user critical data
Enabling autorun
Deleting of the original file
Result
Threat name:
XpertRAT
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/513236
Signature
Allocates memory in foreign processes
Changes security center settings (notifications, updates, antivirus, firewall)
Creates an undocumented autostart registry key
Creates autostart registry keys with suspicious names
Deletes itself after installation
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)
Writes to foreign memory regions
Yara detected AntiVM_3
Yara detected Generic Dropper
Yara detected XpertRAT
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 305732 Sample: gunzipped Startdate: 27/10/2020 Architecture: WINDOWS Score: 100 50 Malicious sample detected (through community Yara rule) 2->50 52 Multi AV Scanner detection for submitted file 2->52 54 Yara detected XpertRAT 2->54 56 4 other signatures 2->56 8 gunzipped.exe 3 2->8         started        11 G2L6E3O1-E775-G5K4-R4C2-P5F660S1R4A8.exe 3 2->11         started        13 G2L6E3O1-E775-G5K4-R4C2-P5F660S1R4A8.exe 2 2->13         started        15 G2L6E3O1-E775-G5K4-R4C2-P5F660S1R4A8.exe 2 2->15         started        process3 signatures4 58 Detected unpacking (creates a PE file in dynamic memory) 8->58 17 gunzipped.exe 1 1 8->17         started        60 Multi AV Scanner detection for dropped file 11->60 62 Machine Learning detection for dropped file 11->62 20 G2L6E3O1-E775-G5K4-R4C2-P5F660S1R4A8.exe 1 11->20         started        22 G2L6E3O1-E775-G5K4-R4C2-P5F660S1R4A8.exe 11->22         started        24 G2L6E3O1-E775-G5K4-R4C2-P5F660S1R4A8.exe 1 13->24         started        26 G2L6E3O1-E775-G5K4-R4C2-P5F660S1R4A8.exe 1 15->26         started        process5 signatures6 40 Changes security center settings (notifications, updates, antivirus, firewall) 17->40 42 Disables user account control notifications 17->42 44 Writes to foreign memory regions 17->44 46 2 other signatures 17->46 28 iexplore.exe 3 7 17->28         started        process7 dnsIp8 38 185.244.30.211, 4576, 49728, 49729 DAVID_CRAIGGG Netherlands 28->38 36 G2L6E3O1-E775-G5K4-R4C2-P5F660S1R4A8.exe, PE32 28->36 dropped 64 Creates an undocumented autostart registry key 28->64 66 Creates autostart registry keys with suspicious names 28->66 68 Writes to foreign memory regions 28->68 33 notepad.exe 28->33         started        file9 signatures10 process11 signatures12 48 Deletes itself after installation 33->48
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/88b664781d7b10fc5130cf6453fbde5b26b129f0e2f5e002d62be833b0fcd020/
Threat name:
ByteCode-MSIL.Backdoor.Androm
Create hunting rule
Status:
Malicious
First seen:
2020-10-27 07:45:06 UTC
AV detection:
25 of 29 (86.21%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=rc3gi6a5pmipyujqz5sfh666lmtlckpq4l26aawwfpudhmh42aqa._file
Verdict:
malicious
Similar samples:
385c7018cf8debb5955d9009f6c8096cecf124c975306b95c9b24bd84046e97b
XpertRAT
46b39992ec65f8aead6f89edbc0c1f5a984677f20780a35b6559150e942efe97
XpertRAT
46b788ef7309467fc6245bbfb1d1e09208758b80e32223ecdc618541972b65a9
XpertRAT
755bcfb03ddf8019aca959a1a5f46f1e2a8b5e10cce049ce8b80e8f4daaaa143
XpertRAT
aa4f4f8ac48785ec451782742032ae5055d653cf1ebfbdfc46cc3c24b3af77c2
XpertRAT
bca4b6e9f14cb4d84674d2f4db286e0ea692f68e8b1d906d04ced807556c6174
XpertRAT
c8fb4f739e355cab35090244a1be19d2c97049c64bfb76d61538a6b7306f3528
XpertRAT
c96a3e23f48b7096d9a6012510064cce5ac745c602a2d3863f9ca8f78771f8cd
XpertRAT
ca0e3013bce504e1592e553248ce902c00b9ab3cd4cbf5b2bfa9c9577ec10f33
XpertRAT
f690a5d289ca78684075e5755fd4e5f0f1a2c1dd4b2e41c80f180b9f95429d8e
XpertRAT
+ 2'809 additional samples on MalwareBazaar
Result
Malware family:
xpertrat
Create hunting rule
Score:
  10/10
Tags:
evasion trojan persistence rat family:xpertrat
Link:
https://tria.ge/reports/201027-s29tmeanws/
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
Deletes itself
Windows security modification
Adds policy Run key to start application
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.

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: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.

Malspam

XpertRAT

gz d923075e568d6597f99a660df23e05e978cd34ab50ee30dc5b8687865b26d55e

XpertRAT

Executable exe 88b664781d7b10fc5130cf6453fbde5b26b129f0e2f5e002d62be833b0fcd020

(this sample)

  
Dropped by
MD5 dd1212990255208a66189a55aab83f67
  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/79759/
  
Dropped by
SHA256 d923075e568d6597f99a660df23e05e978cd34ab50ee30dc5b8687865b26d55e

Comments