MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 79d55a99ff2f41da092fba879ab1858a9f68619c50eb9b65eebb1b45a500e3bb. 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: 12


Intelligence 12 IOCs 1 YARA 2 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 79d55a99ff2f41da092fba879ab1858a9f68619c50eb9b65eebb1b45a500e3bb
SHA3-384 hash: 902d58f4dfe8fd61b3c8de6548e461ad67914284fd32edbd408171f2cfe2cfbaf47eb89c3fe79a647411d255671727cc
SHA1 hash: ca101b92d768d4884c9de4563921b0f4d9543b62
MD5 hash: f6791118160f20fdabe7551a92d2273c
humanhash: ceiling-enemy-freddie-winner
File name:gunzipped.exe
Download: download sample
Signature XpertRAT
Create hunting rule
File size:688'640 bytes
First seen:2022-04-12 20:01:26 UTC
Last seen:2022-04-12 20:43:50 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'813 x AgentTesla, 19'736 x Formbook, 12'282 x SnakeKeylogger)
ssdeep 12288:meuKBxxxxxxxxxxxxxVxZjxPvtGDPrv2FDLOIzf+2gs8XMT2nH3vwXFfxBw8Yxxe:BBxxxxxxxxxxxxxVxZjxPvtGDPrv2FDl
TLSH T1DEE4E2168D569423F8390FE52867549C56E7C38DFD7FBA3A1BA360902397A1C790E3C1
Reporter abuse_ch
Tags:exe XpertRAT


Avatar
abuse_ch
XpertRAT C2:
23.105.131.209:3452

Indicators Of Compromise (IOCs)

Below is a list of indicators of compromise (IOCs) associated with this malware samples.

IOCThreatFox Reference
23.105.131.209:3452 https://threatfox.abuse.ch/ioc/518952/

Intelligence

File Origin
# of uploads :
2
# of downloads :
421
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
gunzipped.exe
Verdict:
Malicious activity
Analysis date:
2022-04-12 20:20:16 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/7b2fa11f-b8a8-4587-b689-36578e0c92d2

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/263226/
Detection(s):
SecuriteInfo.com.BackDoor.SpyBotNET.25.3917.11548.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Creating a file
Сreating synchronization primitives
Changing a file
Launching a process
Creating a file in the %AppData% subdirectories
Enabling the 'hidden' option for recently created files
Searching for synchronization primitives
Creating a file in the %temp% directory
Sending a custom TCP request
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
Enabling autorun
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
control.exe obfuscated packed replace.exe update.exe
Link:
https://www.filescan.io/uploads/6255dacdffe27d5119b91cb5/reports/af4faf28-4b2d-47df-b017-333a6fecb3ff/overview
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.
Malware family:
NirSoft
Create hunting rule
Verdict:
Suspicious
Link:
https://analyze.intezer.com/analyses/014401a9-e05e-4ecb-bdfc-2ddbfa6204cb
Result
Threat name:
MailPassView XpertRAT
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/975752
Signature
.NET source code contains potential unpacker
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
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 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: 608236 Sample: gunzipped.exe Startdate: 12/04/2022 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 7 other signatures 2->65 9 gunzipped.exe 3 2->9         started        13 Q4V8N5Y3-O0F7-P7T5-U113-K7R6L4T0H6H6.exe 3 2->13         started        15 Q4V8N5Y3-O0F7-P7T5-U113-K7R6L4T0H6H6.exe 2 2->15         started        17 Q4V8N5Y3-O0F7-P7T5-U113-K7R6L4T0H6H6.exe 2 2->17         started        process3 file4 49 C:\Users\user\AppData\...\gunzipped.exe.log, ASCII 9->49 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 gunzipped.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 Q4V8N5Y3-O0F7-P7T5-U113-K7R6L4T0H6H6.exe 1 13->22         started        24 BackgroundTransferHost.exe 13->24         started        26 Q4V8N5Y3-O0F7-P7T5-U113-K7R6L4T0H6H6.exe 1 15->26         started        28 Q4V8N5Y3-O0F7-P7T5-U113-K7R6L4T0H6H6.exe 17->28         started        signatures5 process6 signatures7 67 Changes security center settings (notifications, updates, antivirus, firewall) 19->67 69 Disables user account control notifications 19->69 71 Writes to foreign memory regions 19->71 73 2 other signatures 19->73 30 iexplore.exe 3 8 19->30         started        process8 dnsIp9 53 23.105.131.209, 3452, 49732, 49733 LEASEWEB-USA-NYC-11US United States 30->53 51 Q4V8N5Y3-O0F7-P7T5-U113-K7R6L4T0H6H6.exe, PE32 30->51 dropped 55 Creates an undocumented autostart registry key 30->55 57 Creates autostart registry keys with suspicious names 30->57 35 iexplore.exe 30->35         started        37 iexplore.exe 30->37         started        39 iexplore.exe 30->39         started        41 5 other processes 30->41 file10 signatures11 process12 process13 43 WerFault.exe 35->43         started        45 WerFault.exe 37->45         started        47 WerFault.exe 39->47         started       
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/79d55a99ff2f41da092fba879ab1858a9f68619c50eb9b65eebb1b45a500e3bb/
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
Create hunting rule
Status:
Malicious
First seen:
2022-04-12 20:02:08 UTC
File Type:
PE (.Net Exe)
Extracted files:
15
AV detection:
12 of 42 (28.57%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=phkvvgp7f5a5ucjpxkdzvmmfrkpwqym4kdvzwzpoxmnuljia4o5q._file
Verdict:
malicious
Result
Malware family:
xpertrat
Create hunting rule
Score:
  10/10
Tags:
family:xpertrat collection evasion persistence rat trojan
Link:
https://tria.ge/reports/220412-yr4gfsfgfq/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
System policy modification
Suspicious use of SetThreadContext
Accesses Microsoft Outlook accounts
Adds Run key to start application
Checks whether UAC is enabled
Program crash
Windows security modification
Adds policy Run key to start application
UAC bypass
Windows security bypass
XpertRAT
Unpacked files
SH256 hash:
72a49f62eae137e18fade85334736438906cf695d7e162b01548e483b240191c
MD5 hash:
af2f61afb25bfd79d3931f127a972082
SHA1 hash:
4c641244a06cddb88df27f6cd614c4ab54b1f7ce
Link:
https://www.unpac.me/results/f5bd21c4-1b39-4478-b1aa-88b6f9a60607/
Parent samples :
3ec377ffc5814c66d3417104617bc3a048448ef400c360480efc036c425afb95
5f55d8c4830b28a08183d87428064f6a641f7c95ffe373cafe1ecb8b36043d99
SH256 hash:
cd6aa3246517a022a02fd0da1737c88496ba78fad17c30c56794b912d8a5fb80
MD5 hash:
a37b56ff000ee8a3f94339f0f197170d
SHA1 hash:
1f18928a6adfe0226c4b9c616de14dd4049ff527
Link:
https://www.unpac.me/results/f5bd21c4-1b39-4478-b1aa-88b6f9a60607/
SH256 hash:
8e9b37d4c7c2727b77088c84a9de4536fd8a71e917b12ab08943b1b185eae5b8
MD5 hash:
7c2fdd4d1ecdcfd8d54bd94416ee4b5c
SHA1 hash:
faeb1371224be62d2a7efe21317333b197dbb18c
Link:
https://www.unpac.me/results/f5bd21c4-1b39-4478-b1aa-88b6f9a60607/
SH256 hash:
d855da117b2a06438997254c11be3d9df3ebc2fac1cb711d3f63e7044864df89
MD5 hash:
952af2b991991a8226a51f84613b3eed
SHA1 hash:
6625adc69ee691cadf8d1365c151696cf6280c26
Link:
https://www.unpac.me/results/f5bd21c4-1b39-4478-b1aa-88b6f9a60607/
SH256 hash:
e79ec5f9c7250d7f6754ad76264dcb1c1c453a792a9a685a7bf010ba5178f5bb
MD5 hash:
2d557603a5257b59a92f1f490fab230a
SHA1 hash:
17d54c9077df895ce61dd817fe05f19c81a67fdd
Link:
https://www.unpac.me/results/f5bd21c4-1b39-4478-b1aa-88b6f9a60607/
SH256 hash:
79d55a99ff2f41da092fba879ab1858a9f68619c50eb9b65eebb1b45a500e3bb
MD5 hash:
f6791118160f20fdabe7551a92d2273c
SHA1 hash:
ca101b92d768d4884c9de4563921b0f4d9543b62
Link:
https://www.unpac.me/results/f5bd21c4-1b39-4478-b1aa-88b6f9a60607/
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: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.

Cape
Cape
https://www.capesandbox.com/analysis/263226/

Comments