MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 b6b90cdf2c07f42826129b55d85408c8c6c80e1603db642f7881735a7ed1e1b0. 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


AgentTesla


Vendor detections: 10


Intelligence 10 IOCs YARA 2 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: b6b90cdf2c07f42826129b55d85408c8c6c80e1603db642f7881735a7ed1e1b0
SHA3-384 hash: 582668c90a611d3d0bdcc947d781e37e8c7bcadae790e043c0be0f0a45b70dad5782593e8e714bc8bfe5f583bf7de98a
SHA1 hash: dbfa0fc954578e88fd9fcaf5d80769e0b49f3562
MD5 hash: 3645adac86d6315a8da5083d819ec236
humanhash: comet-queen-maryland-cup
File name:Rjhmutrk.exe
Download: download sample
Signature AgentTesla
Create hunting rule
File size:40'448 bytes
First seen:2022-02-22 11:27:03 UTC
Last seen:2022-02-22 11:52:05 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 384:8MiubaA4YeK7PQ6ulaiJMwCKTH2S3dd0hUADkadi:8hubTTrml7MwCKt3deVDW
Threatray 15'285 similar samples on MalwareBazaar
TLSH T18C03F71A7892961DC5D47BF869B1A19366367CE10124C18FECFDBF29A933223DCC216D
File icon (PE):PE icon
dhash icon 174f4559191b1b13 (81 x AgentTesla, 68 x Formbook, 34 x SnakeKeylogger)
Reporter GovCERT_CH
Tags:AgentTesla exe

Intelligence

File Origin
# of uploads :
3
# of downloads :
204
Origin country :
n/a
Vendor Threat Intelligence
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/243244/
Detection(s):
SecuriteInfo.com.W32.MSIL_Kryptik.GLW.genEldorado.11883.5514.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Сreating synchronization primitives
Running batch commands
Creating a process with a hidden window
Launching a process
DNS request
Sending an HTTP GET request
Sending a custom TCP request
Creating a window
Query of malicious DNS domain
Sending a TCP request to an infection source
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
obfuscated packed
Link:
https://www.filescan.io/uploads/6214c88e875593a3cc027baf/reports/62992f25-ea00-4deb-abbb-32ca10779737/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.
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/876ca44f-4a2d-467e-82ef-f12a5d23c6a8
Result
Threat name:
AgentTesla
Create hunting rule
Detection:
malicious
Classification:
troj.adwa.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/943900
Signature
.NET source code contains very large array initializations
Antivirus detection for URL or domain
Creates multiple autostart registry keys
Found malware configuration
Hides that the sample has been downloaded from the Internet (zone.identifier)
Icon mismatch, binary includes an icon from a different legit application in order to fool users
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)
Modifies the hosts file
Multi AV Scanner detection for domain / URL
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Queries sensitive BIOS Information (via WMI, Win32_Bios & Win32_BaseBoard, often done to detect virtual machines)
Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines)
Uses ping.exe to check the status of other devices and networks
Yara detected AgentTesla
Yara detected Costura Assembly Loader
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 576378 Sample: Rjhmutrk.exe Startdate: 22/02/2022 Architecture: WINDOWS Score: 100 72 kotadiainc.com 2->72 74 yahoo.com 2->74 78 Multi AV Scanner detection for domain / URL 2->78 80 Found malware configuration 2->80 82 Malicious sample detected (through community Yara rule) 2->82 84 9 other signatures 2->84 8 Rjhmutrk.exe 16 6 2->8         started        13 tKZVPq.exe 2->13         started        15 newapp.exe 3 2->15         started        17 2 other processes 2->17 signatures3 process4 dnsIp5 76 kotadiainc.com 103.50.162.146, 443, 49743, 49749 PUBLIC-DOMAIN-REGISTRYUS India 8->76 58 C:\Users\user\AppData\Roaming\...\newapp.exe, PE32 8->58 dropped 60 C:\Users\user\...\newapp.exe:Zone.Identifier, ASCII 8->60 dropped 62 C:\Users\user\AppData\...\Rjhmutrk.exe.log, ASCII 8->62 dropped 94 Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines) 8->94 96 Queries sensitive BIOS Information (via WMI, Win32_Bios & Win32_BaseBoard, often done to detect virtual machines) 8->96 98 Creates multiple autostart registry keys 8->98 100 Injects a PE file into a foreign processes 8->100 19 Rjhmutrk.exe 2 5 8->19         started        23 cmd.exe 1 8->23         started        102 Multi AV Scanner detection for dropped file 13->102 104 Machine Learning detection for dropped file 13->104 25 cmd.exe 13->25         started        27 cmd.exe 15->27         started        29 cmd.exe 1 17->29         started        31 cmd.exe 17->31         started        file6 signatures7 process8 file9 52 C:\Users\user\AppData\Roaming\...\tKZVPq.exe, PE32 19->52 dropped 54 C:\Windows\System32\drivers\etc\hosts, ASCII 19->54 dropped 56 C:\Users\user\...\tKZVPq.exe:Zone.Identifier, ASCII 19->56 dropped 86 Creates multiple autostart registry keys 19->86 88 Modifies the hosts file 19->88 90 Hides that the sample has been downloaded from the Internet (zone.identifier) 19->90 92 Uses ping.exe to check the status of other devices and networks 23->92 33 PING.EXE 1 23->33         started        36 conhost.exe 23->36         started        38 PING.EXE 25->38         started        40 conhost.exe 25->40         started        42 PING.EXE 27->42         started        44 conhost.exe 27->44         started        46 PING.EXE 1 29->46         started        48 conhost.exe 29->48         started        50 conhost.exe 31->50         started        signatures10 process11 dnsIp12 64 yahoo.com 74.6.143.26 YAHOO-3US United States 33->64 66 98.137.11.163 YAHOO-GQ1US United States 38->66 68 192.168.2.1 unknown unknown 42->68 70 74.6.143.25 YAHOO-3US United States 46->70
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/b6b90cdf2c07f42826129b55d85408c8c6c80e1603db642f7881735a7ed1e1b0/
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
Create hunting rule
Status:
Malicious
First seen:
2022-02-22 11:26:27 UTC
File Type:
PE (.Net Exe)
Extracted files:
10
AV detection:
15 of 28 (53.57%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=w24qzxzma72cqjqstnk5qvaizddmqdqwapnwil3yqfzvu7wr4gya._file
Verdict:
malicious
Label(s):
agenttesla
Create hunting rule
Similar samples:
231af4f9626622427ed4df07e6ed351172b9a3417ee26235ba05ec14ed7dc7e4
AgentTesla
6ffc8cbbd4335b8ee1487f406295eac8080bf080e0e266743166adc79a9f1950
AgentTesla
b7c392fdfb83df479372c77f3fc1e91fde1f1317ec3c944380e0262df33638a9
AgentTesla
de84b70d7248de297cf2ab2cfe38eff4b41d558551db8a4b4d3399dbf480f103
AgentTesla
fafe3c7c1660f4baadeaedff9ae0ca32e57407b991f01e5a965e8e19f6c133b1
AgentTesla
+ 15'275 additional samples on MalwareBazaar
Result
Malware family:
agenttesla
Create hunting rule
Score:
  10/10
Tags:
family:agenttesla keylogger persistence spyware stealer trojan
Link:
https://tria.ge/reports/220222-nke56shchm/
Behaviour
Runs ping.exe
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Program crash
Drops file in Windows directory
Suspicious use of SetThreadContext
Adds Run key to start application
Checks computer location settings
Drops file in Drivers directory
AgentTesla Payload
AgentTesla
Unpacked files
SH256 hash:
b6b90cdf2c07f42826129b55d85408c8c6c80e1603db642f7881735a7ed1e1b0
MD5 hash:
3645adac86d6315a8da5083d819ec236
SHA1 hash:
dbfa0fc954578e88fd9fcaf5d80769e0b49f3562
Link:
https://www.unpac.me/results/8ca33936-196a-4968-9def-ebec4affbbcd/
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Suspicious File
Score:
0.65
Link:
https://yomi.yoroi.company/submissions/b6b90cdf2c07f42826129b55d85408c8c6c80e1603db642f7881735a7ed1e1b0

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.

Malspam

AgentTesla

Executable exe b6b90cdf2c07f42826129b55d85408c8c6c80e1603db642f7881735a7ed1e1b0

(this sample)

  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/243244/

Comments