MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 da539b625ca9e065c0cfe7b482eece781e32b1b69659b7d3a1d835729c903eb2. 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


Formbook


Vendor detections: 18


Intelligence 18 IOCs YARA 17 File information Comments
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SHA256 hash: da539b625ca9e065c0cfe7b482eece781e32b1b69659b7d3a1d835729c903eb2
SHA3-384 hash: 78663b7283d7473390b7e5137c7d462a3088918313d7a57ed4472d64fdd778fadfcc4fa1dc7b185fe98c61745fcd1397
SHA1 hash: d1bb332f95a37b61d33b803862d18e67878c0848
MD5 hash: 52063152571bc86e8ec9c87ddc81dc98
humanhash: ack-massachusetts-magnesium-sad
File name:Purchase Order.exe
Download: download sample
Signature Formbook
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File size:737'280 bytes
First seen:2024-01-29 13:38:41 UTC
Last seen:2024-01-29 15:25:23 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'666 x AgentTesla, 19'479 x Formbook, 12'209 x SnakeKeylogger)
ssdeep 12288:aa1OIoIFFHgeg/c7uHOsb2UDDTx0wfusQmTjQ1CDM8fM6Ac:cIXFxmvBvTKwNQmqCDpfMd
Threatray 5'081 similar samples on MalwareBazaar
TLSH T12FF4125636B8AB12D8BAD7F86070626517F878237451F7AC4FC071ED1A32BA58B10CE7
TrID 49.0% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
20.9% (.EXE) Win32 Executable MS Visual C++ (generic) (31206/45/13)
8.7% (.SCR) Windows screen saver (13097/50/3)
7.0% (.EXE) Win64 Executable (generic) (10523/12/4)
4.4% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
File icon (PE):PE icon
dhash icon 1e1a594c6c52124e (17 x AgentTesla, 5 x Formbook, 3 x SnakeKeylogger)
Reporter TeamDreier
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
2
# of downloads :
291
Origin country :
DK DK
Vendor Threat Intelligence
Malware family:
agenttesla
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ID:
1
File name:
da539b625ca9e065c0cfe7b482eece781e32b1b69659b7d3a1d835729c903eb2.exe
Verdict:
Malicious activity
Analysis date:
2024-01-29 13:50:50 UTC
Tags:
evasion stealer agenttesla
Link:
https://app.any.run/tasks/3f5035a2-1d51-4504-b983-69b3b726f6d7

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
AgentTesla
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Link:
https://www.capesandbox.com/analysis/473416/
Detection(s):
SecuriteInfo.com.Trojan.PackedNET.2655.8077.24358.UNOFFICIAL
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Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Unauthorized injection to a recently created process
Restart of the analyzed sample
Creating a file
Using the Windows Management Instrumentation requests
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
masquerade packed
Link:
https://www.filescan.io/uploads/65b7aa86bc91f83c80700901/reports/86e708b9-400b-43a0-85c6-2253714ac3e5/overview
Verdict:
Malicious
Labled as:
Win/malicious_confidence_100%
Link:
https://www.hybrid-analysis.com/sample/da539b625ca9e065c0cfe7b482eece781e32b1b69659b7d3a1d835729c903eb2
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.
Malware family:
Agent Tesla
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Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/68ef6815-a79a-4f0d-bc5c-7b27fdd9e3fa
Result
Threat name:
AgentTesla
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Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1382684
Signature
.NET source code contains method to dynamically call methods (often used by packers)
.NET source code contains potential unpacker
Check if machine is in data center or colocation facility
Contains functionality to check if a debugger is running (CheckRemoteDebuggerPresent)
Contains functionality to log keystrokes (.Net Source)
Found malware configuration
Hides that the sample has been downloaded from the Internet (zone.identifier)
Initial sample is a PE file and has a suspicious name
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)
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: Suspicious Process Patterns NTDS.DIT Exfil
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Tries to harvest and steal browser information (history, passwords, etc)
Tries to steal Mail credentials (via file / registry access)
Yara detected AgentTesla
Yara detected AntiVM3
Yara detected Generic Downloader
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1382684 Sample: Purchase_Order.exe Startdate: 29/01/2024 Architecture: WINDOWS Score: 100 29 mail.kanya-mittaphab.com 2->29 31 ip-api.com 2->31 43 Found malware configuration 2->43 45 Malicious sample detected (through community Yara rule) 2->45 47 Multi AV Scanner detection for submitted file 2->47 49 10 other signatures 2->49 7 Purchase_Order.exe 3 2->7         started        10 ZUHFqcY.exe 3 2->10         started        12 ZUHFqcY.exe 2 2->12         started        signatures3 process4 signatures5 51 Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines) 7->51 53 Tries to detect sandboxes and other dynamic analysis tools (process name or module or function) 7->53 55 Injects a PE file into a foreign processes 7->55 57 Contains functionality to check if a debugger is running (CheckRemoteDebuggerPresent) 7->57 14 Purchase_Order.exe 16 5 7->14         started        59 Multi AV Scanner detection for dropped file 10->59 61 Machine Learning detection for dropped file 10->61 19 ZUHFqcY.exe 14 2 10->19         started        21 ZUHFqcY.exe 12->21         started        23 ZUHFqcY.exe 12->23         started        process6 dnsIp7 33 mail.kanya-mittaphab.com 67.20.116.106, 49733, 49738, 49744 UNIFIEDLAYER-AS-1US United States 14->33 35 ip-api.com 208.95.112.1, 49731, 49736, 49743 TUT-ASUS United States 14->35 25 C:\Users\user\AppData\Roaming\...\ZUHFqcY.exe, PE32 14->25 dropped 27 C:\Users\user\...\ZUHFqcY.exe:Zone.Identifier, ASCII 14->27 dropped 37 Tries to steal Mail credentials (via file / registry access) 14->37 39 Hides that the sample has been downloaded from the Internet (zone.identifier) 14->39 41 Tries to harvest and steal browser information (history, passwords, etc) 21->41 file8 signatures9
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/da539b625ca9e065c0cfe7b482eece781e32b1b69659b7d3a1d835729c903eb2
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/da539b625ca9e065c0cfe7b482eece781e32b1b69659b7d3a1d835729c903eb2/
Threat name:
ByteCode-MSIL.Spyware.Negasteal
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Status:
Malicious
First seen:
2024-01-29 02:11:36 UTC
AV detection:
19 of 23 (82.61%)
Threat level:
  2/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=3jjzwys4vhqglqgp462if3wopapdfmnwszm3pu5b3a2xfheqh2za._file
Verdict:
malicious
Label(s):
agenttesla_v4
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agenttesla
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Similar samples:
4f89a3ab1146a0513cd923bd8f66604c81df7e90c2e526a8dd3dc96c5dd1a68d
Formbook
68bc379e0b8b0e5d4045fa775d0edf9b49f07acafb007ac45326d81394860fbf
Formbook
93bc53ac6666ec7e8baed9fe226b218b6508260a82ffd3fcd923f7f5b556593f
Formbook
a3268fd103ce714411b447c75854565ddf366535c6f47641893f0d78f0482bb8
Formbook
+ 5'071 additional samples on MalwareBazaar
Result
Malware family:
agenttesla
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Score:
  10/10
Tags:
family:agenttesla keylogger persistence spyware stealer trojan
Link:
https://tria.ge/reports/240129-qxzfpacdfq/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Suspicious use of SetThreadContext
Adds Run key to start application
Looks up external IP address via web service
Reads user/profile data of local email clients
Reads user/profile data of web browsers
AgentTesla
Unpacked files
SH256 hash:
ffe318e7f1c9763d390af421081abfc32d0bab306047a967539af5af6a49d6c8
MD5 hash:
6cc696309ca484ac384b34bcc18e43ab
SHA1 hash:
fc6ac88c76a2f791d33742a774a540e3265023e2
Link:
https://www.unpac.me/results/5cee89a4-48ca-431e-b963-a94541aaa483/
SH256 hash:
8bdffed9f9ba4dfadb099b4ec0fe9104e563b1d6b09a69643e6f3d9d7fbb6db2
MD5 hash:
70b3e85fae71545e9914f8fd5e700d1a
SHA1 hash:
9ae1af68982f313aa3a3adbeefa40d789a3e2924
Detections:
AgentTesla
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win_agent_tesla_g2
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INDICATOR_SUSPICIOUS_EXE_Referenfces_File_Transfer_Clients
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Agenttesla_type2
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INDICATOR_SUSPICIOUS_Binary_References_Browsers
Create hunting rule
INDICATOR_SUSPICIOUS_EXE_VaultSchemaGUID
Create hunting rule
INDICATOR_SUSPICIOUS_EXE_References_Messaging_Clients
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INDICATOR_SUSPICIOUS_EXE_SandboxHookingDLL
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INDICATOR_EXE_Packed_GEN01
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INDICATOR_SUSPICIOUS_EXE_References_Confidential_Data_Store
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Link:
https://www.unpac.me/results/5cee89a4-48ca-431e-b963-a94541aaa483/
SH256 hash:
3014b859be7cafca84f61ab3398e0832d80175d76dc6ff4a45df7b2fef39dcaf
MD5 hash:
17cbde8bc5d57e164c1daa95d1b37d0b
SHA1 hash:
4856da540fd30d018fa511c9ce705871e1e2affa
Link:
https://www.unpac.me/results/5cee89a4-48ca-431e-b963-a94541aaa483/
SH256 hash:
3512e50a7509ca8b120d7835c69302e5d739fa3651dd65485e5739a1cc991ede
MD5 hash:
8bc76b6253fe4689a874767bdefec712
SHA1 hash:
4642b756487c2e1878e7e03e32e77b51df0b3b3e
Link:
https://www.unpac.me/results/5cee89a4-48ca-431e-b963-a94541aaa483/
SH256 hash:
da539b625ca9e065c0cfe7b482eece781e32b1b69659b7d3a1d835729c903eb2
MD5 hash:
52063152571bc86e8ec9c87ddc81dc98
SHA1 hash:
d1bb332f95a37b61d33b803862d18e67878c0848
Link:
https://www.unpac.me/results/5cee89a4-48ca-431e-b963-a94541aaa483/
Malware family:
AgentTesla
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Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/da539b625ca9/report/overview.html
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/da539b625ca9e065c0cfe7b482eece781e32b1b69659b7d3a1d835729c903eb2

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
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Author:ditekshen
Description:AgentTeslaV3 infostealer payload
Rule name:DebuggerCheck__RemoteAPI
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Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:INDICATOR_EXE_Packed_GEN01
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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
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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
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Author:ditekSHen
Description:Detects executables referencing many email and collaboration clients. Observed in information stealers
Rule name:INDICATOR_SUSPICIOUS_EXE_Referenfces_File_Transfer_Clients
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Author:ditekSHen
Description:Detects executables referencing many file transfer clients. Observed in information stealers
Rule name:INDICATOR_SUSPICIOUS_EXE_SandboxHookingDLL
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Author:ditekSHen
Description:Detects binaries and memory artifacts referencing sandbox DLLs typically observed in sandbox evasion
Rule name:INDICATOR_SUSPICIOUS_EXE_VaultSchemaGUID
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Author:ditekSHen
Description:Detects executables referencing Windows vault credential objects. Observed in infostealers
Rule name:malware_Agenttesla_type2
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Author:JPCERT/CC Incident Response Group
Description:detect Agenttesla in memory
Reference:internal research
Rule name:Multifamily_RAT_Detection
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Author:Lucas Acha (http://www.lukeacha.com)
Description:Generic Detection for multiple RAT families, PUPs, Packers and suspicious executables
Rule name:NET
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Author:malware-lu
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

File information

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

Malspam

Formbook

Executable exe da539b625ca9e065c0cfe7b482eece781e32b1b69659b7d3a1d835729c903eb2

(this sample)

  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/473416/

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