MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 cca1dafa21e94b11519e381134d0946c638230a3a548a67f89af7ce7111567d2. 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: 18


Intelligence 18 IOCs YARA 16 File information Comments

SHA256 hash: cca1dafa21e94b11519e381134d0946c638230a3a548a67f89af7ce7111567d2
SHA3-384 hash: 0f2a76d8a40c281e055444f02bc9cb4b2e996330465a19f4a063b6360aecb27cc9eca031d2bfaa862838b834cc1b0e7c
SHA1 hash: e9708c2b82f5f92db13e9b5cdbe0e50762a5815b
MD5 hash: 716775870c3dbf7d5da95a7778fb9a51
humanhash: three-wyoming-fish-aspen
File name:Swift-14213851695_1068620941254_20231212_.xlsx.exe
Download: download sample
Signature AgentTesla
File size:733'184 bytes
First seen:2024-03-15 14:48:27 UTC
Last seen:2024-03-15 16:35:45 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'742 x AgentTesla, 19'607 x Formbook, 12'242 x SnakeKeylogger)
ssdeep 12288:bRiq+ZpOIq16cb1GSUkb2gb8Dvr9QWfXqwDZrmI4VSLJh9UPUyP8U:bvKpOIWGkSw8DrxqKZrm7MJHUPUyp
Threatray 674 similar samples on MalwareBazaar
TLSH T124F423293FE4D523C6B9B6BA6962939202786D087859CB8ECC557FC980B0FC492137D7
TrID 69.7% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
10.0% (.EXE) Win64 Executable (generic) (10523/12/4)
6.2% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
4.2% (.EXE) Win32 Executable (generic) (4504/4/1)
1.9% (.EXE) Win16/32 Executable Delphi generic (2072/23)
File icon (PE):PE icon
dhash icon 032f76606b636368 (6 x AgentTesla, 2 x Formbook, 1 x RemcosRAT)
Reporter lowmal3
Tags:AgentTesla exe

Intelligence


File Origin
# of uploads :
2
# of downloads :
604
Origin country :
DE DE
Vendor Threat Intelligence
Malware family:
agenttesla
ID:
1
File name:
cca1dafa21e94b11519e381134d0946c638230a3a548a67f89af7ce7111567d2.exe
Verdict:
Malicious activity
Analysis date:
2024-03-15 14:48:50 UTC
Tags:
agenttesla stealer

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

Behaviour
Creating a window
Сreating synchronization primitives
Creating a process with a hidden window
Unauthorized injection to a recently created process
Restart of the analyzed sample
Creating a file
Using the Windows Management Instrumentation requests
Creating a file in the %AppData% subdirectories
Reading critical registry keys
Setting a keyboard event handler
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Stealing user critical data
Adding an exclusion to Microsoft Defender
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
masquerade packed redcap
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.
Result
Threat name:
AgentTesla
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Signature
.NET source code contains potential unpacker
.NET source code contains very large array initializations
Adds a directory exclusion to Windows Defender
Contains functionality to log keystrokes (.Net Source)
Found malware configuration
Hides that the sample has been downloaded from the Internet (zone.identifier)
Injects a PE file into a foreign processes
Installs a global keyboard hook
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
Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines)
Sigma detected: Powershell Base64 Encoded MpPreference Cmdlet
Sigma detected: Suspicious Double Extension File Execution
Snort IDS alert for network traffic
Tries to harvest and steal browser information (history, passwords, etc)
Tries to steal Mail credentials (via file / registry access)
Uses an obfuscated file name to hide its real file extension (double extension)
Yara detected AgentTesla
Yara detected AntiVM3
Yara detected Generic Downloader
Behaviour
Behavior Graph:
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1409689 Sample: Swift-14213851695_106862094... Startdate: 15/03/2024 Architecture: WINDOWS Score: 100 36 mail.karpackkasa.com 2->36 38 karpackkasa.com 2->38 50 Snort IDS alert for network traffic 2->50 52 Found malware configuration 2->52 54 Malicious sample detected (through community Yara rule) 2->54 56 11 other signatures 2->56 8 Swift-14213851695_1068620941254_20231212_.xlsx.exe 4 2->8         started        11 ctsdvwT.exe 3 2->11         started        13 ctsdvwT.exe 2->13         started        signatures3 process4 signatures5 58 Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines) 8->58 60 Adds a directory exclusion to Windows Defender 8->60 62 Injects a PE file into a foreign processes 8->62 15 Swift-14213851695_1068620941254_20231212_.xlsx.exe 1 5 8->15         started        20 powershell.exe 21 8->20         started        64 Multi AV Scanner detection for dropped file 11->64 66 Machine Learning detection for dropped file 11->66 22 ctsdvwT.exe 2 11->22         started        24 ctsdvwT.exe 11->24         started        26 ctsdvwT.exe 13->26         started        process6 dnsIp7 40 karpackkasa.com 31.207.81.59, 49741, 587 AEROTEK-ASTR Turkey 15->40 32 C:\Users\user\AppData\Roaming\...\ctsdvwT.exe, PE32 15->32 dropped 34 C:\Users\user\...\ctsdvwT.exe:Zone.Identifier, ASCII 15->34 dropped 42 Tries to steal Mail credentials (via file / registry access) 15->42 44 Hides that the sample has been downloaded from the Internet (zone.identifier) 15->44 46 Installs a global keyboard hook 15->46 28 WmiPrvSE.exe 20->28         started        30 conhost.exe 20->30         started        48 Tries to harvest and steal browser information (history, passwords, etc) 26->48 file8 signatures9 process10
Threat name:
ByteCode-MSIL.Spyware.Negasteal
Status:
Malicious
First seen:
2024-03-15 10:53:30 UTC
File Type:
PE (.Net Exe)
Extracted files:
11
AV detection:
19 of 24 (79.17%)
Threat level:
  2/5
Result
Malware family:
agenttesla
Score:
  10/10
Tags:
family:agenttesla keylogger persistence spyware stealer trojan
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Suspicious use of SetThreadContext
Adds Run key to start application
Checks computer location settings
Reads user/profile data of local email clients
Reads user/profile data of web browsers
AgentTesla
Unpacked files
SH256 hash:
b18c02279b5016ab433cb11fc68212055966fbe81bb7d7f10d526fb2b61d6454
MD5 hash:
149f6e1717a06c65c1f12b5b06940fa3
SHA1 hash:
d725ed17da37f999989da683ac1f53d50bb217d5
SH256 hash:
6f4b9053ad1b2055b956f16b37f41654836f103add0c988e87dfe9b1b38bbdd8
MD5 hash:
eb7bb66bdbdb419b20e66ceef2e7e3a6
SHA1 hash:
849156f7c6d97ec1bd45fbc3c768c54f92894271
SH256 hash:
3d10791eaba3785c03f1cc20215769aad552678c424b47f5457d1f36a52aaa87
MD5 hash:
eadb75966091bbb944df4a3dc1466919
SHA1 hash:
780c4616f56c75c0ce5ed5e1edca9a6f08b93c02
Detections:
AgentTesla win_agent_tesla_g2 INDICATOR_SUSPICIOUS_EXE_Referenfces_File_Transfer_Clients Agenttesla_type2 INDICATOR_SUSPICIOUS_Binary_References_Browsers INDICATOR_SUSPICIOUS_EXE_VaultSchemaGUID INDICATOR_SUSPICIOUS_EXE_References_Messaging_Clients INDICATOR_EXE_Packed_GEN01 INDICATOR_SUSPICIOUS_EXE_References_Confidential_Data_Store
SH256 hash:
04320537fbb103dd33557df6788b4f5bd0ed3d55a0773938c02a524b79687e7c
MD5 hash:
87f9daabae3a20df3bd8e8683724b570
SHA1 hash:
5c2b2dc667214f0f32eb508792a2e9b56bf22fd5
SH256 hash:
c7b65c024c00424121be603e04c3032bfb1415c2bb12dadcf03c34ee72321c58
MD5 hash:
1c54147f268ac0afa3a41e7c89a79162
SHA1 hash:
221ff832887f8be905fd555f973422b587bacefb
SH256 hash:
cca1dafa21e94b11519e381134d0946c638230a3a548a67f89af7ce7111567d2
MD5 hash:
716775870c3dbf7d5da95a7778fb9a51
SHA1 hash:
e9708c2b82f5f92db13e9b5cdbe0e50762a5815b
Malware family:
AgentTesla
Verdict:
Malicious
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:AgentTeslaV3
Author:ditekshen
Description:AgentTeslaV3 infostealer payload
Rule name:INDICATOR_EXE_Packed_GEN01
Author:ditekSHen
Description:Detect packed .NET executables. Mostly AgentTeslaV4.
Rule name:INDICATOR_SUSPICIOUS_Binary_References_Browsers
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
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
Author:ditekSHen
Description:Detects executables referencing many email and collaboration clients. Observed in information stealers
Rule name:INDICATOR_SUSPICIOUS_EXE_Referenfces_File_Transfer_Clients
Author:ditekSHen
Description:Detects executables referencing many file transfer clients. Observed in information stealers
Rule name:INDICATOR_SUSPICIOUS_EXE_VaultSchemaGUID
Author:ditekSHen
Description:Detects executables referencing Windows vault credential objects. Observed in infostealers
Rule name:malware_Agenttesla_type2
Author:JPCERT/CC Incident Response Group
Description:detect Agenttesla in memory
Reference:internal research
Rule name:Multifamily_RAT_Detection
Author:Lucas Acha (http://www.lukeacha.com)
Description:Generic Detection for multiple RAT families, PUPs, Packers and suspicious executables
Rule name:NET
Author:malware-lu
Rule name:NETexecutableMicrosoft
Author:malware-lu
Rule name:pe_imphash
Rule name:Skystars_Malware_Imphash
Author:Skystars LightDefender
Description:imphash
Rule name:Windows_Generic_Threat_9f4a80b2
Author:Elastic Security
Rule name:Windows_Trojan_AgentTesla_ebf431a8
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

Executable exe cca1dafa21e94b11519e381134d0946c638230a3a548a67f89af7ce7111567d2

(this sample)

  
Delivery method
Distributed via e-mail attachment

BLint


The following table provides more information about this file using BLint. BLint is a Binary Linter to check the security properties, and capabilities in executables.

Findings
IDTitleSeverity
CHECK_AUTHENTICODEMissing Authenticodehigh
CHECK_DLL_CHARACTERISTICSMissing dll Security Characteristics (HIGH_ENTROPY_VA)high

Comments