MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 03eaf5508873192e98217c09dd3c737fe090039e216f78748a88334d20c1dbb0. 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: 15


Intelligence 15 IOCs YARA 17 File information Comments
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SHA256 hash: 03eaf5508873192e98217c09dd3c737fe090039e216f78748a88334d20c1dbb0
SHA3-384 hash: f8966e2d25d6a03fc6f41c106974eeafee599feab4b9e8f08fd6895aec85a085241572532060ee54c2c3e9b8f8756579
SHA1 hash: 745688176269041d63e261157f8cb613c368532e
MD5 hash: c17c2e51418aa6cc00df45c7abad1c63
humanhash: magnesium-carolina-pip-winner
File name:Invoice.exe
Download: download sample
Signature Formbook
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File size:715'264 bytes
First seen:2024-02-20 11:28:01 UTC
Last seen:2024-02-20 13:16:26 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 12288:xCSmPwRYnOELz89VtMFFJMJOsWRBnxuUwZ5R0rned2CruozrG6+L47pRs2Iw9Gwr:gSmP0Y74VtMPbsgBnxuUO5Krklr9rO8b
TLSH T14CE4128013689F5EDD375FF892E6006243F3B4552872E2996DCD61CA4B93F908738B9B
TrID 63.0% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
11.2% (.SCR) Windows screen saver (13097/50/3)
9.0% (.EXE) Win64 Executable (generic) (10523/12/4)
5.6% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
3.8% (.EXE) Win32 Executable (generic) (4504/4/1)
Reporter TeamDreier
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
2
# of downloads :
312
Origin country :
DK DK
Vendor Threat Intelligence
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/477046/
Detection(s):
Porcupine.Malware.58887.UNOFFICIAL
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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
DNS request
Connection attempt
Sending an HTTP GET request
Reading critical registry keys
Sending a custom TCP request
Stealing user critical data
Adding an exclusion to Microsoft Defender
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
masquerade packed
Link:
https://www.filescan.io/uploads/65d48ccce304215defb4cb58/reports/5df89ae4-3c1d-417e-bfdf-4454d3475791/overview
Verdict:
Malicious
Labled as:
Win/malicious_confidence_100%
Link:
https://www.hybrid-analysis.com/sample/03eaf5508873192e98217c09dd3c737fe090039e216f78748a88334d20c1dbb0
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/c19ef018-b4c9-490f-bdb6-8d34952648c5
Result
Threat name:
AgentTesla, PureLog Stealer
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Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1395218
Signature
.NET source code contains method to dynamically call methods (often used by packers)
.NET source code contains potential unpacker
Adds a directory exclusion to Windows Defender
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
Initial sample is a PE file and has a suspicious name
Machine Learning detection for sample
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for submitted file
Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines)
Queries sensitive video device information (via WMI, Win32_VideoController, often done to detect virtual machines)
Sigma detected: Powershell Base64 Encoded MpPreference Cmdlet
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
Yara detected PureLog Stealer
Behaviour
Behavior Graph:
Download SVG
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/03eaf5508873192e98217c09dd3c737fe090039e216f78748a88334d20c1dbb0
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/03eaf5508873192e98217c09dd3c737fe090039e216f78748a88334d20c1dbb0/
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
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Status:
Malicious
First seen:
2024-02-19 07:15:18 UTC
File Type:
PE (.Net Exe)
Extracted files:
5
AV detection:
18 of 24 (75.00%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=apvpkueiomms5gbbpqe52pdtp7qjaa46efxxq5ekrazu2igb3oya._file
Verdict:
malicious
Label(s):
agenttesla_v4
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agenttesla
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Result
Malware family:
agenttesla
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Score:
  10/10
Tags:
family:agenttesla keylogger spyware stealer trojan
Link:
https://tria.ge/reports/240220-nkzvksfd9t/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Suspicious use of SetThreadContext
Looks up external IP address via web service
Checks computer location settings
Reads user/profile data of local email clients
Reads user/profile data of web browsers
AgentTesla
Unpacked files
SH256 hash:
c745810a793027420bec7907dc8287abb37b27313e82edcc274c749b6a988adc
MD5 hash:
ab333080308ccc21c21ef72d44589d56
SHA1 hash:
ebcadfec3ca2b20985a48e1d0c5c9e8e37221d2e
Link:
https://www.unpac.me/results/878fcc15-363f-4926-a445-25a8ecd48751/
SH256 hash:
72638f4b30cc9dab51d31216991957bf1cd118b8a8743227b3e8f9c4805f7628
MD5 hash:
2a8240bba06e832ee5d136a0a7e5b5b9
SHA1 hash:
de49d9b33004a4a622a4279b3ee2b3e3e5cd012b
Link:
https://www.unpac.me/results/878fcc15-363f-4926-a445-25a8ecd48751/
SH256 hash:
e75927212ba701d5364611aed397979868e13ac40e47fb500a05da72fa9b4069
MD5 hash:
f8cbe4439cd47f6e5086a6c6e7d8090a
SHA1 hash:
8db361fe922be21f3a7543881fbae00146e3eba6
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
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INDICATOR_SUSPICIOUS_EXE_VaultSchemaGUID
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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/878fcc15-363f-4926-a445-25a8ecd48751/
SH256 hash:
06e657f27dec7d4238de33bccffe2afe0ddeb0db34b1b67c9824784dc4c2ab0b
MD5 hash:
4e889cbaa7a03d4d3c31d6ef203ad840
SHA1 hash:
7b2723a8cbfa237773b733fd59c8445ea9e3356b
Link:
https://www.unpac.me/results/878fcc15-363f-4926-a445-25a8ecd48751/
SH256 hash:
03eaf5508873192e98217c09dd3c737fe090039e216f78748a88334d20c1dbb0
MD5 hash:
c17c2e51418aa6cc00df45c7abad1c63
SHA1 hash:
745688176269041d63e261157f8cb613c368532e
Link:
https://www.unpac.me/results/878fcc15-363f-4926-a445-25a8ecd48751/
Malware family:
AgentTesla
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Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/03eaf5508873/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/03eaf5508873192e98217c09dd3c737fe090039e216f78748a88334d20c1dbb0

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
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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:NET
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Author:malware-lu
Rule name:NETexecutableMicrosoft
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Author:malware-lu
Rule name:pe_imphash
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Rule name:Skystars_Malware_Imphash
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Author:Skystars LightDefender
Description:imphash
Rule name:Windows_Trojan_AgentTesla_ebf431a8
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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

Formbook

Executable exe 03eaf5508873192e98217c09dd3c737fe090039e216f78748a88334d20c1dbb0

(this sample)

  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/477046/

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