MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 a636bb4d14e0b138ecec8246c1fb50d9d1d14cb9831cefd4076a5876d3fa4925. 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: 8


Intelligence 8 IOCs YARA 2 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: a636bb4d14e0b138ecec8246c1fb50d9d1d14cb9831cefd4076a5876d3fa4925
SHA3-384 hash: 2ad25545089070135712f05b40071aea3629cfa558db44748dbc028ce2644d9d7b88bce2153ea20dfdf609726e5511bc
SHA1 hash: 37dc327b29b8d1c2b4f8edb812ad44ff6086d949
MD5 hash: 9f93175085d33620e723d7583310f6ce
humanhash: bulldog-lemon-fruit-apart
File name:PO 6400008164.exe
Download: download sample
Signature AgentTesla
Create hunting rule
File size:727'552 bytes
First seen:2020-10-05 12:03:13 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash 41cd3d95714b0df8060323fdc67b3eba (10 x AgentTesla, 6 x Loki, 1 x MassLogger)
ssdeep 12288:HcAt9L2fndhBK2w3p3z+iqiBZdMuWD9gP38UBUcCM+:tHqhBFgBg6u
Threatray 768 similar samples on MalwareBazaar
TLSH 45F48D22A2E17433C1671A399CDB6777DC25BE503D28E94A2BE4DC4C9F396813F19293
Reporter abuse_ch
Tags:AgentTesla exe


Avatar
abuse_ch
Malspam distributing AgentTesla:

From: COMECO Export <export@comeco.org>
Subject: RFQ (2)Comeco Purchase Order
Attachment: PO 6400008164.r11 (contains "PO 6400008164.exe")

Intelligence

File Origin
# of uploads :
1
# of downloads :
91
Origin country :
n/a
Vendor Threat Intelligence
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/68193/
Result
Verdict:
Malware
Maliciousness:

Behaviour
Sending a UDP request
Creating a window
Launching a process
Creating a file in the %AppData% subdirectories
Creating a process from a recently created file
Using the Windows Management Instrumentation requests
Unauthorized injection to a recently created process
Unauthorized injection to a recently created process by context flags manipulation
Unauthorized injection to a system process
Enabling autorun by creating a file
Result
Threat name:
AgentTesla
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/481404
Signature
Allocates memory in foreign processes
Contains functionality to detect sleep reduction / modifications
Creates files in alternative data streams (ADS)
Detected unpacking (changes PE section rights)
Detected unpacking (creates a PE file in dynamic memory)
Detected unpacking (overwrites its own PE header)
Drops VBS files to the startup folder
Found malware configuration
Machine Learning detection for dropped file
Machine Learning detection for sample
Maps a DLL or memory area into another process
May check the online IP address of the machine
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)
Queues an APC in another process (thread injection)
Sigma detected: Drops script at startup location
Tries to harvest and steal browser information (history, passwords, etc)
Tries to harvest and steal ftp login credentials
Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc)
Tries to steal Mail credentials (via file access)
Writes to foreign memory regions
Yara detected AgentTesla
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 293171 Sample: PO 6400008164.exe Startdate: 05/10/2020 Architecture: WINDOWS Score: 100 39 Found malware configuration 2->39 41 Multi AV Scanner detection for submitted file 2->41 43 Yara detected AgentTesla 2->43 45 4 other signatures 2->45 8 PO 6400008164.exe 2->8         started        11 wscript.exe 1 2->11         started        process3 signatures4 63 Writes to foreign memory regions 8->63 65 Allocates memory in foreign processes 8->65 67 Queues an APC in another process (thread injection) 8->67 13 notepad.exe 5 8->13         started        17 mssoft.exe 11->17         started        process5 file6 27 C:\Users\user\AppData\Roaming\...\mssoft.exe, PE32 13->27 dropped 29 C:\Users\user\...\mssoft.exe:Zone.Identifier, ASCII 13->29 dropped 31 C:\Users\user\AppData\Roaming\...\music.vbs, ASCII 13->31 dropped 69 Creates files in alternative data streams (ADS) 13->69 71 Drops VBS files to the startup folder 13->71 19 mssoft.exe 13->19         started        73 Maps a DLL or memory area into another process 17->73 22 mssoft.exe 15 8 17->22         started        signatures7 process8 dnsIp9 47 Multi AV Scanner detection for dropped file 19->47 49 Detected unpacking (changes PE section rights) 19->49 51 Detected unpacking (creates a PE file in dynamic memory) 19->51 61 6 other signatures 19->61 25 mssoft.exe 4 19->25         started        33 smtp.avvalves.com 22->33 35 us2.smtp.mailhostbox.com 208.91.199.223, 49768, 49769, 587 PUBLIC-DOMAIN-REGISTRYUS United States 22->35 37 3 other IPs or domains 22->37 53 Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc) 22->53 55 Tries to steal Mail credentials (via file access) 22->55 57 Tries to harvest and steal ftp login credentials 22->57 59 Tries to harvest and steal browser information (history, passwords, etc) 22->59 signatures10 process11
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/a636bb4d14e0b138ecec8246c1fb50d9d1d14cb9831cefd4076a5876d3fa4925/
Threat name:
Win32.Trojan.LokiBot
Create hunting rule
Status:
Malicious
First seen:
2020-10-05 10:00:33 UTC
AV detection:
26 of 29 (89.66%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=uy3lwtiu4cytr3hmqjdmd62q3hi5ctfzqmoo7vahnjmhnu72jesq._file
Verdict:
malicious
Label(s):
agenttesla
Create hunting rule
netwirerc
Create hunting rule
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AgentTesla
+ 758 additional samples on MalwareBazaar
Result
Malware family:
agenttesla
Create hunting rule
Score:
  10/10
Tags:
upx spyware keylogger trojan stealer family:agenttesla
Link:
https://tria.ge/reports/201005-dxsznkqm4s/
Behaviour
NTFS ADS
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Suspicious use of SetThreadContext
Looks up external IP address via web service
Drops startup file
Loads dropped DLL
Reads data files stored by FTP clients
Reads user/profile data of local email clients
Reads user/profile data of web browsers
Executes dropped EXE
UPX packed file
AgentTesla
Unpacked files
SH256 hash:
a636bb4d14e0b138ecec8246c1fb50d9d1d14cb9831cefd4076a5876d3fa4925
MD5 hash:
9f93175085d33620e723d7583310f6ce
SHA1 hash:
37dc327b29b8d1c2b4f8edb812ad44ff6086d949
Link:
https://www.unpac.me/results/476511a7-846e-43c2-b667-698de604ddcd/
SH256 hash:
881ea853d7ad1d56d3d1dabf669ca1f71428df7ec5f7562a2877a93258e033e2
MD5 hash:
4e9de9f2a351b3f66683dea75bc6dcc0
SHA1 hash:
235c4c3d03787c361e93578c48ffb8d2ff941993
Link:
https://www.unpac.me/results/476511a7-846e-43c2-b667-698de604ddcd/
SH256 hash:
c57d1a68800843bc36104c2e152bdeacebc03d8b576a2f22c8fbef3bfbb65d1e
MD5 hash:
562955c59e13ab9dfef5427e696325b7
SHA1 hash:
f88a51d71ab5d83b04dffebd840316cb8119de9d
Link:
https://www.unpac.me/results/476511a7-846e-43c2-b667-698de604ddcd/
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/a636bb4d14e0b138ecec8246c1fb50d9d1d14cb9831cefd4076a5876d3fa4925

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:ach_AgentTesla_20200929
Create hunting rule
Author:abuse.ch
Description:Detects AgentTesla PE
Rule name:win_agent_tesla_v1
Create hunting rule
Author:Johannes Bader @viql
Description:detects Agent Tesla

File information

The table below shows additional information about this malware sample such as delivery method and external references.

Malspam

AgentTesla

rar f0b8c66e9190e3e63ca90c062a6ce579f1a1b37845e254d87a78cef5b595e142

AgentTesla

Executable exe a636bb4d14e0b138ecec8246c1fb50d9d1d14cb9831cefd4076a5876d3fa4925

(this sample)

  
Dropped by
MD5 a2e1a501168771ccbd8cf7520bf2dae5
  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/68193/
  
Dropped by
SHA256 f0b8c66e9190e3e63ca90c062a6ce579f1a1b37845e254d87a78cef5b595e142

Comments