MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 28b2e9be250b41e1f4ec167dff3620f09597b7292ad23f0c48a8d6cdcc388959. 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: 28b2e9be250b41e1f4ec167dff3620f09597b7292ad23f0c48a8d6cdcc388959
SHA3-384 hash: bd4d029bb8a6150c447f27010cb68d77ca82be9d8d36c055bf797f2cdb58e5c0d1ea3771303440439a269f8507c67cfe
SHA1 hash: 63721215f57495860838e078f0bb73d00ce4817a
MD5 hash: 441ef18a2da7b635c7861e9a502a938b
humanhash: fifteen-jig-grey-three
File name:RFQ_#76242788162.exe
Download: download sample
Signature XpertRAT
Create hunting rule
File size:183'952 bytes
First seen:2020-10-16 10:38:58 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'657 x AgentTesla, 19'468 x Formbook, 12'206 x SnakeKeylogger)
ssdeep 1536:HyuutF2Z2JDMxDQ7NIItjLy8lONmiWTDL1CfMZiKKboXWR9X8SUfK:HyaEoxDiNIgjLXSXkVmMZtKboXgX9
Threatray 611 similar samples on MalwareBazaar
TLSH 31046ECC37124985E73C187C1BBF24B023ABFEA77EE181557894335542AB2E8B55CB62
Reporter abuse_ch
Tags:exe RAT XpertRAT


Avatar
abuse_ch
XpertRAT C2:
zytriew.duckdns.org:4141

Intelligence

File Origin
# of uploads :
1
# of downloads :
94
Origin country :
n/a
Vendor Threat Intelligence
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/71918/
Result
Verdict:
Malware
Maliciousness:

Behaviour
Launching a process
Creating a process with a hidden window
Sending a UDP request
Creating a window
DNS request
Adding an access-denied ACE
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
Connection attempt
Sending a TCP request to an infection source
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
Result
Threat name:
XpertRAT
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/493436
Signature
Changes security center settings (notifications, updates, antivirus, firewall)
Connects to a pastebin service (likely for C&C)
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
Hides threads from debuggers
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)
Uses dynamic DNS services
Yara detected Generic Dropper
Yara detected XpertRAT
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 299173 Sample: RFQ_#76242788162.exe Startdate: 16/10/2020 Architecture: WINDOWS Score: 100 55 zytriew.duckdns.org 2->55 69 Malicious sample detected (through community Yara rule) 2->69 71 Yara detected XpertRAT 2->71 73 Yara detected Generic Dropper 2->73 75 3 other signatures 2->75 8 RFQ_#76242788162.exe 15 2 2->8         started        12 Y6K1I7G5-B5F3-V3F4-S5A6-T0V116U8H550.exe 14 2 2->12         started        14 Y6K1I7G5-B5F3-V3F4-S5A6-T0V116U8H550.exe 2->14         started        16 Y6K1I7G5-B5F3-V3F4-S5A6-T0V116U8H550.exe 2->16         started        signatures3 process4 dnsIp5 59 hastebin.com 172.67.143.180, 443, 49732, 49753 CLOUDFLARENETUS United States 8->59 81 Detected unpacking (creates a PE file in dynamic memory) 8->81 83 Hides threads from debuggers 8->83 85 Injects a PE file into a foreign processes 8->85 18 RFQ_#76242788162.exe 1 1 8->18         started        21 timeout.exe 1 8->21         started        23 WerFault.exe 23 9 8->23         started        61 104.24.126.89, 443, 49749, 49751 CLOUDFLARENETUS United States 12->61 87 Machine Learning detection for dropped file 12->87 25 timeout.exe 12->25         started        31 2 other processes 12->31 27 timeout.exe 14->27         started        34 2 other processes 14->34 29 timeout.exe 16->29         started        36 2 other processes 16->36 signatures6 process7 dnsIp8 65 Changes security center settings (notifications, updates, antivirus, firewall) 18->65 67 Disables user account control notifications 18->67 38 iexplore.exe 3 7 18->38         started        43 conhost.exe 21->43         started        45 conhost.exe 25->45         started        47 conhost.exe 27->47         started        49 conhost.exe 29->49         started        63 192.168.2.1 unknown unknown 31->63 signatures9 process10 dnsIp11 57 zytriew.duckdns.org 45.147.228.221, 4141 COMBAHTONcombahtonGmbHDE Germany 38->57 51 Y6K1I7G5-B5F3-V3F4-S5A6-T0V116U8H550.exe, PE32 38->51 dropped 53 C:\...\Y6K1I7G5-B5F3-V3F4-S5A6-T0V116U8H550, data 38->53 dropped 77 Creates an undocumented autostart registry key 38->77 79 Creates autostart registry keys with suspicious names 38->79 file12 signatures13
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/28b2e9be250b41e1f4ec167dff3620f09597b7292ad23f0c48a8d6cdcc388959/
Threat name:
ByteCode-MSIL.Trojan.Malrep
Create hunting rule
Status:
Suspicious
First seen:
2020-10-15 11:07:21 UTC
AV detection:
27 of 48 (56.25%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=fczotprfbna6d5hmcz676nra6ckzpnzjfljd6dcivdlm3tbyrfmq._file
Verdict:
malicious
Similar samples:
08927d7955b1be7fd05d81a73057242117540094dda7cca1c162f3aea18c2854
XpertRAT
12f341bc0f65e96848b4dd440afc7f653e883e740adcb677fc4f8b5ba5c38ef2
XpertRAT
1dce14c664bb75e2552cafda4d35fa2f5ad0005ee0013adf4b673cd0688aa443
XpertRAT
293bf5eeec6d5d30ee3b3d26f73d6cb81f4e080a449774fc8d2c3a724454f521
XpertRAT
4aff31bec64048fdf3913ac6ac61d5670cc351a3054500e6dcf25779b1a2e54b
XpertRAT
9666c06b6da42bc3cc7ae265a46cd4d137c74a1be711151efe9a44c31a894a78
XpertRAT
a36735377d731d16330587a190a99acbd5a1d9556e066d771268f8b4b6cd3821
XpertRAT
efae690881ae3f76ce9af4b48a0b02f24b0e91691b13930c5b5d0c806247be6d
XpertRAT
f79b985c1bf0b6708864ec45d12917c2e130dc53408b648b893179874f8e4b97
XpertRAT
ff9d837e464eb07ad603c0b2ac0a35029117123c31570baeb61fca9a0242b493
XpertRAT
+ 601 additional samples on MalwareBazaar
Result
Malware family:
xpertrat
Create hunting rule
Score:
  10/10
Tags:
evasion trojan rat family:xpertrat persistence
Link:
https://tria.ge/reports/201016-cwrczk6hke/
Behaviour
Delays execution with timeout.exe
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
System policy modification
Program crash
Suspicious use of NtSetInformationThreadHideFromDebugger
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
UAC bypass
Windows security bypass
XpertRAT
XpertRAT Core Payload
Unpacked files
SH256 hash:
28b2e9be250b41e1f4ec167dff3620f09597b7292ad23f0c48a8d6cdcc388959
MD5 hash:
441ef18a2da7b635c7861e9a502a938b
SHA1 hash:
63721215f57495860838e078f0bb73d00ce4817a
Link:
https://www.unpac.me/results/97a09537-bf0f-4a35-a213-9b0c72e01944/
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Backdoor
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/28b2e9be250b41e1f4ec167dff3620f09597b7292ad23f0c48a8d6cdcc388959

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

Executable exe 28b2e9be250b41e1f4ec167dff3620f09597b7292ad23f0c48a8d6cdcc388959

(this sample)

  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/71918/

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