MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 c1797b46a71297b18f605474ae99f1397a965cd2fb18a646f1c2c4eab4144333. 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: 17


Intelligence 17 IOCs YARA 4 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: c1797b46a71297b18f605474ae99f1397a965cd2fb18a646f1c2c4eab4144333
SHA3-384 hash: c5bd24fb6950256db2d67cb6b51303ce81c53d0f649d2020b8a1d94def5ea3c5a9c83af3f27ce7a3ea3972abc386464d
SHA1 hash: 5e6ff3acbea5f8c474d633a161f1352969ce2b61
MD5 hash: 49482207d1339a79c73b4669785f6c20
humanhash: black-december-idaho-sodium
File name:Payment Receipt.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:735'232 bytes
First seen:2024-06-12 06:18:52 UTC
Last seen:2024-06-12 07:35:01 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:JX0pxLV36Di8BtLiyOMHZBIzxcpf+llkmKW59EEXAmRajcjxQeQ+IYLlwKzdtcnG:2BFKYLMHZWO4IMD1XAmep9atc7
TLSH T10AF4234C32ACA251D5BC537D18A7A69073F67AE345A2C7ACDCD912C410A3B205B7FEC6
TrID 61.9% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
11.1% (.SCR) Windows screen saver (13097/50/3)
8.9% (.EXE) Win64 Executable (generic) (10523/12/4)
5.5% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
3.8% (.EXE) Win32 Executable (generic) (4504/4/1)
File icon (PE):PE icon
dhash icon ccc8a8cc30e06030 (10 x AgentTesla, 9 x Formbook)
Reporter lowmal3
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
2
# of downloads :
332
Origin country :
DE DE
Vendor Threat Intelligence
Malware family:
agenttesla
Create hunting rule
ID:
1
File name:
c1797b46a71297b18f605474ae99f1397a965cd2fb18a646f1c2c4eab4144333.exe
Verdict:
Malicious activity
Analysis date:
2024-06-12 06:20:55 UTC
Tags:
evasion stealer agenttesla ftp exfiltration
Link:
https://app.any.run/tasks/c2fe345b-58c1-461c-98c7-27d234149d30

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection(s):
SecuriteInfo.com.Trojan.PackedNET.2548.4302.7412.UNOFFICIAL
Create hunting rule

Verdict:
Malicious
Score:
99.1%
Link:
https://cyber-fortress.com/docs/result/index.php?id=66693df5a2bce47be7d7f7cfwin7simulatehigh_evasion
Tags:
Banker Encryption Execution Network Gensteal Dexter
Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Creating a window
Сreating synchronization primitives
Creating a process with a hidden window
Using the Windows Management Instrumentation requests
DNS request
Connection attempt
Sending an HTTP GET request
Reading critical registry keys
Stealing user critical data
Adding an exclusion to Microsoft Defender
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
masquerade packed
Link:
https://www.filescan.io/uploads/66693dd80bf5978c0b0e9e03/reports/b553835f-9208-445d-a056-9d1089c923bf/overview
Verdict:
Malicious
Labled as:
Win/malicious_confidence_100%
Link:
https://www.hybrid-analysis.com/sample/c1797b46a71297b18f605474ae99f1397a965cd2fb18a646f1c2c4eab4144333
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
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/882e3e11-99ce-4013-9f8b-91558acb2a28
Result
Threat name:
AgentTesla
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1455788
Signature
.NET source code contains potential unpacker
Adds a directory exclusion to Windows Defender
AI detected suspicious sample
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
Loading BitLocker PowerShell Module
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)
Sigma detected: Powershell Base64 Encoded MpPreference Cmdlet
Snort IDS alert for network traffic
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 harvest and steal ftp login credentials
Tries to steal Mail credentials (via file / registry access)
Yara detected AgentTesla
Yara detected AntiVM3
Yara detected Generic Downloader
Behaviour
Behavior Graph:
Download SVG
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/c1797b46a71297b18f605474ae99f1397a965cd2fb18a646f1c2c4eab4144333
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/c1797b46a71297b18f605474ae99f1397a965cd2fb18a646f1c2c4eab4144333/
Threat name:
Win32.Spyware.Negasteal
Create hunting rule
Status:
Malicious
First seen:
2024-06-10 07:18:06 UTC
File Type:
PE (.Net Exe)
Extracted files:
9
AV detection:
27 of 37 (72.97%)
Threat level:
  2/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=yf4xwrvhckl3dd3akr2k5gprhf5jmxgs7mmkmrxrylcovnauimzq._file
Verdict:
malicious
Label(s):
agenttesla_v4
Create hunting rule
agenttesla
Create hunting rule
Result
Malware family:
agenttesla
Create hunting rule
Score:
  10/10
Tags:
family:agenttesla execution keylogger spyware stealer trojan
Link:
https://tria.ge/reports/240612-g267nasgjm/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Looks up external IP address via web service
Checks computer location settings
Reads WinSCP keys stored on the system
Reads data files stored by FTP clients
Reads user/profile data of local email clients
Reads user/profile data of web browsers
Command and Scripting Interpreter: PowerShell
AgentTesla
Verdict:
Malicious
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/44d67c26-29da-4747-8b31-e37bce482b62
Unpacked files
SH256 hash:
1a1de9f3fe4c3a7ea7cd547cdd9d78b3873d6e243e544e5bb647452d6d9f6cfe
MD5 hash:
ceb52a5c98659e8905ea76737fe00c01
SHA1 hash:
bb7b30ff84d6aa26eaa0021c9fa3cd2c5a08e694
Link:
https://www.unpac.me/results/2531e4a8-00de-497a-b6dc-1057b160efc2/
SH256 hash:
ec682ef5ffbb9ddbc50b81fa4fb469bf978acd089a771fc11f6c73d5500ed038
MD5 hash:
f1cb9235550a9cac4dd1f5a71c10b18c
SHA1 hash:
b85285ee2c52df4f7f4b8f1b3e55287b0caea1dd
Link:
https://www.unpac.me/results/2531e4a8-00de-497a-b6dc-1057b160efc2/
SH256 hash:
fc806a89fef02aedc5253da6309f2f25b6fa9ff363d6f3d0616e38a46f3f08a9
MD5 hash:
d0161f8372f05ecdf67881c8fa343f8b
SHA1 hash:
884c40f9ae1faaa4554511b0e572456bfea55cbb
Detections:
win_agent_tesla_g2
Create hunting rule
INDICATOR_SUSPICIOUS_EXE_Referenfces_File_Transfer_Clients
Create hunting rule
Agenttesla_type2
Create hunting rule
MALWARE_Win_AgentTeslaV2
Create hunting rule
INDICATOR_SUSPICIOUS_Binary_References_Browsers
Create hunting rule
INDICATOR_SUSPICIOUS_EXE_VaultSchemaGUID
Create hunting rule
INDICATOR_SUSPICIOUS_EXE_References_Messaging_Clients
Create hunting rule
INDICATOR_SUSPICIOUS_EXE_SandboxHookingDLL
Create hunting rule
INDICATOR_EXE_Packed_GEN01
Create hunting rule
INDICATOR_SUSPICIOUS_EXE_References_Confidential_Data_Store
Create hunting rule
Link:
https://www.unpac.me/results/2531e4a8-00de-497a-b6dc-1057b160efc2/
Parent samples :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 hash:
6243c709db7165f4a84036c0544b462ee9539412c61de6151a6aa18465659e48
MD5 hash:
5166d8930d5a1bf5a1738cc180587975
SHA1 hash:
4316633ea531432ff67776d1e59dcf8481a7cbbc
Link:
https://www.unpac.me/results/2531e4a8-00de-497a-b6dc-1057b160efc2/
SH256 hash:
c1797b46a71297b18f605474ae99f1397a965cd2fb18a646f1c2c4eab4144333
MD5 hash:
49482207d1339a79c73b4669785f6c20
SHA1 hash:
5e6ff3acbea5f8c474d633a161f1352969ce2b61
Link:
https://www.unpac.me/results/2531e4a8-00de-497a-b6dc-1057b160efc2/
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:NET
Create hunting rule
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

File information

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

Malspam

Formbook

Executable exe c1797b46a71297b18f605474ae99f1397a965cd2fb18a646f1c2c4eab4144333

(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