MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 a91ca6aaad29b8fa67243ec564545d39653a99b127e0a20a3f9d0ea86283a8c6. 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: 9


Intelligence 9 IOCs YARA 20 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: a91ca6aaad29b8fa67243ec564545d39653a99b127e0a20a3f9d0ea86283a8c6
SHA3-384 hash: 4d85536176ac70a5d85db173609369158ee9119afb87e96abd7e0aac28f8fff6b37d21f8ced1b103bf463604743d0741
SHA1 hash: d3b6a6849ec11d9b30f2e826da5abb80575ca058
MD5 hash: b903c75adee1519510471c02e808c78a
humanhash: magazine-vermont-blue-minnesota
File name:Quotation No Q240419600.bat
Download: download sample
Signature AgentTesla
Create hunting rule
File size:3'069'550 bytes
First seen:2024-04-30 06:51:43 UTC
Last seen:Never
File type:Batch (bat) bat
MIME type:text/plain
ssdeep 49152:p0MkEKWI/H8Q9xQJ5PD0pQj1F6Czqa1X4Gi8:p
TLSH T100E533219FD6AC7D0364423D742AAF2F1F905F5DA8189DE763A1208617AFF834603E76
Reporter cocaman
Tags:AgentTesla bat QUOTATION

Intelligence

File Origin
# of uploads :
1
# of downloads :
122
Origin country :
CH CH
Vendor Threat Intelligence
Malware family:
agenttesla
Create hunting rule
ID:
1
File name:
a91ca6aaad29b8fa67243ec564545d39653a99b127e0a20a3f9d0ea86283a8c6.bat
Verdict:
Malicious activity
Analysis date:
2024-04-30 06:53:27 UTC
Tags:
evasion smtp agenttesla stealer
Link:
https://app.any.run/tasks/5b5a42c6-e283-42c8-895a-8045d6a793ca

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Result
Verdict:
Clean
Maliciousness:

Behaviour
Searching for the window
Launching cmd.exe command interpreter
Launching a process
Verdict:
Likely Malicious
Threat level:
  7.5/10
Confidence:
100%
Tags:
cmd lolbin powershell xcopy
Link:
https://www.filescan.io/uploads/6630951d54bafb7d21e70105/reports/180af83e-d20d-4b6d-ab1a-5014ca910ea0/overview
Verdict:
Unknown
Link:
https://www.hybrid-analysis.com/sample/a91ca6aaad29b8fa67243ec564545d39653a99b127e0a20a3f9d0ea86283a8c6
Result
Threat name:
n/a
Detection:
suspicious
Classification:
n/a
Score:
24 / 100
Link:
https://www.joesandbox.com/analysis/1433893
Signature
Found large BAT file
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 1433893 Sample: Quotation No Q240419600.bat Startdate: 30/04/2024 Architecture: WINDOWS Score: 24 32 Found large BAT file 2->32 6 cmd.exe 1 2->6         started        8 chrome.exe 9 2->8         started        process3 dnsIp4 11 conhost.exe 6->11         started        13 cmd.exe 1 6->13         started        15 xcopy.exe 1 6->15         started        17 attrib.exe 1 6->17         started        28 192.168.2.5, 443, 49703, 49706 unknown unknown 8->28 30 239.255.255.250 unknown Reserved 8->30 19 chrome.exe 8->19         started        process5 dnsIp6 22 www.google.com 142.250.190.68, 443, 49706, 49707 GOOGLEUS United States 19->22 24 plus.l.google.com 142.250.190.78, 443, 49719 GOOGLEUS United States 19->24 26 apis.google.com 19->26
Score:
99%
Verdict:
Malware
File Type:
SCRIPT
Link:
https://malprob.io/report/a91ca6aaad29b8fa67243ec564545d39653a99b127e0a20a3f9d0ea86283a8c6
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/a91ca6aaad29b8fa67243ec564545d39653a99b127e0a20a3f9d0ea86283a8c6/
Threat name:
Win32.Trojan.Casdet
Create hunting rule
Status:
Malicious
First seen:
2024-04-30 06:51:47 UTC
File Type:
Text (Batch)
AV detection:
6 of 23 (26.09%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=veoknkvnfg4puzzeh3cwivc5hfstvgnre7qkecr7tuhkqyudvdda._file
Verdict:
unknown
Result
Malware family:
n/a
Score:
  8/10
Tags:
evasion
Link:
https://tria.ge/reports/240430-hm3flafc31/
Behaviour
Suspicious use of WriteProcessMemory
Views/modifies file attributes
Sets file to hidden
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/a91ca6aaad29b8fa67243ec564545d39653a99b127e0a20a3f9d0ea86283a8c6

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:AgentTeslaV3
Create hunting rule
Author:ditekshen
Description:AgentTeslaV3 infostealer payload
Rule name:AgentTeslaV5
Create hunting rule
Author:ClaudioWayne
Description:AgentTeslaV5 infostealer payload
Rule name:BitcoinAddress
Create hunting rule
Author:Didier Stevens (@DidierStevens)
Description:Contains a valid Bitcoin address
Rule name:BlackGuard_Rule
Create hunting rule
Author:Jiho Kim
Description:Yara rule for BlackGuarad Stealer v1.0 - v3.0
Reference:https://www.virustotal.com/gui/file/67843d45ba538eca29c63c3259d697f7e2ba84a3da941295b9207cdb01c85b71/detection
Rule name:DebuggerCheck__RemoteAPI
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:INDICATOR_EXE_Packed_GEN01
Create hunting rule
Author:ditekSHen
Description:Detect packed .NET executables. Mostly AgentTeslaV4.
Rule name:INDICATOR_SUSPICIOUS_Binary_References_Browsers
Create hunting rule
Author:ditekSHen
Description:Detects binaries (Windows and macOS) referencing many web browsers. Observed in information stealers.
Rule name:INDICATOR_SUSPICIOUS_EXE_References_Confidential_Data_Store
Create hunting rule
Author:ditekSHen
Description:Detects executables referencing many confidential data stores found in browsers, mail clients, cryptocurreny wallets, etc. Observed in information stealers
Rule name:INDICATOR_SUSPICIOUS_EXE_References_Messaging_Clients
Create hunting rule
Author:ditekSHen
Description:Detects executables referencing many email and collaboration clients. Observed in information stealers
Rule name:INDICATOR_SUSPICIOUS_EXE_Referenfces_File_Transfer_Clients
Create hunting rule
Author:ditekSHen
Description:Detects executables referencing many file transfer clients. Observed in information stealers
Rule name:INDICATOR_SUSPICIOUS_EXE_SandboxHookingDLL
Create hunting rule
Author:ditekSHen
Description:Detects binaries and memory artifacts referencing sandbox DLLs typically observed in sandbox evasion
Rule name:INDICATOR_SUSPICIOUS_EXE_VaultSchemaGUID
Create hunting rule
Author:ditekSHen
Description:Detects executables referencing Windows vault credential objects. Observed in infostealers
Rule name:malware_Agenttesla_type2
Create hunting rule
Author:JPCERT/CC Incident Response Group
Description:detect Agenttesla in memory
Reference:internal research
Rule name:Multifamily_RAT_Detection
Create hunting rule
Author:Lucas Acha (http://www.lukeacha.com)
Description:Generic Detection for multiple RAT families, PUPs, Packers and suspicious executables
Rule name:NETexecutableMicrosoft
Create hunting rule
Author:malware-lu
Rule name:pe_imphash
Create hunting rule
Rule name:Skystars_Malware_Imphash
Create hunting rule
Author:Skystars LightDefender
Description:imphash
Rule name:Windows_Trojan_AgentTesla_ebf431a8
Create hunting rule
Author:Elastic Security
Reference:https://www.elastic.co/security-labs/attack-chain-leads-to-xworm-and-agenttesla

File information

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

Malspam

AgentTesla

7z 4ca7a88914b12594c63a7e2939e3ac8af105390c356e755ce4035eb9d9c42dfa

AgentTesla

Batch (bat) bat a91ca6aaad29b8fa67243ec564545d39653a99b127e0a20a3f9d0ea86283a8c6

(this sample)

  
Delivery method
Other
  
Dropped by
SHA256 4ca7a88914b12594c63a7e2939e3ac8af105390c356e755ce4035eb9d9c42dfa
  
Dropped by
MD5 867326e02f81edbe8022e97ca2a68ff5

Comments