MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 a54d0aecd2d24ce47e9773d031b1995a6fe81b9508e02553aef5bd62ae5dcd8f. 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 18 File information Comments
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SHA256 hash: a54d0aecd2d24ce47e9773d031b1995a6fe81b9508e02553aef5bd62ae5dcd8f
SHA3-384 hash: 9a932d9dd580af91d9f12eeb7fa112d351f13af92cfd28659218cccda8805257e36f75ee7ce07d507faaebdafb00aa58
SHA1 hash: b71bdccb8b06c081589d3063fa02874ffdd2450e
MD5 hash: 8f6133a74122aa1a27d18e48c2a3fa0c
humanhash: oranges-arkansas-nebraska-double
File name:Your file name without extension goes here.exe
Download: download sample
Signature Formbook
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File size:2'970'216 bytes
First seen:2024-06-18 08:43:59 UTC
Last seen:2024-06-18 09:27:54 UTC
File type:Executable exe
MIME type:application/x-dosexec
ssdeep 12288:lU46sykEJtb4RlyoxZePN6MAtWRdNu6vuqmBk+El4CG4DPi:lPRykobG7E69URdNxuqyk+dR
TLSH T16BD51266306B5F2BFC611070DDE63AF501FE9CA778F9840FEF960C2252A567E06A0271
TrID 44.4% (.EXE) Win64 Executable (generic) (10523/12/4)
21.2% (.EXE) Win16 NE executable (generic) (5038/12/1)
8.7% (.ICL) Windows Icons Library (generic) (2059/9)
8.5% (.EXE) OS/2 Executable (generic) (2029/13)
8.4% (.EXE) Generic Win/DOS Executable (2002/3)
Reporter lowmal3
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
2
# of downloads :
360
Origin country :
DE DE
Vendor Threat Intelligence
Malware family:
agenttesla
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ID:
1
File name:
a54d0aecd2d24ce47e9773d031b1995a6fe81b9508e02553aef5bd62ae5dcd8f.exe
Verdict:
Malicious activity
Analysis date:
2024-06-18 08:46:41 UTC
Tags:
evasion smtp exfiltration stealer agenttesla
Link:
https://app.any.run/tasks/e774cd1b-5e4e-4a73-9d91-3ff13f0577b5

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection(s):
SecuriteInfo.com.FileRepMalware.10439.23373.UNOFFICIAL
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Verdict:
Malicious
Score:
81.4%
Link:
https://cyber-fortress.com/docs/result/index.php?id=66714a5c0f8138dd4ead32a2win7simulatehigh_evasion
Tags:
Encryption Generic Gensteal
Result
Verdict:
Malware
Maliciousness:

Behaviour
Launching a process
Searching for synchronization primitives
Launching the default Windows debugger (dwwin.exe)
Using the Windows Management Instrumentation requests
Сreating synchronization primitives
Searching for the window
DNS request
Connection attempt
Sending an HTTP GET request
Reading critical registry keys
Sending a custom TCP request
Creating a window
Forced shutdown of a system process
Stealing user critical data
Unauthorized injection to a system process
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
overlay vbnet
Link:
https://www.filescan.io/uploads/667148d3431e0065139d685e/reports/d17f0fed-0918-4651-9f3c-6acd05e15363/overview
Verdict:
Malicious
Labled as:
Malware
Link:
https://www.hybrid-analysis.com/sample/a54d0aecd2d24ce47e9773d031b1995a6fe81b9508e02553aef5bd62ae5dcd8f
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.
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/a0de538c-f4e3-43e5-9061-74ca0948692e
Result
Threat name:
AgentTesla
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Detection:
malicious
Classification:
troj.spyw.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1458752
Signature
.NET source code references suspicious native API functions
AI detected suspicious sample
Allocates memory in foreign processes
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
Injects a PE file into a foreign processes
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)
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 harvest and steal Putty / WinSCP information (sessions, passwords, etc)
Tries to steal Mail credentials (via file / registry access)
Writes to foreign memory regions
Yara detected AgentTesla
Yara detected AntiVM3
Yara detected Generic Downloader
Yara detected UAC Bypass using CMSTP
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1458752 Sample: Your file name without exte... Startdate: 18/06/2024 Architecture: WINDOWS Score: 100 18 terminal4.veeblehosting.com 2->18 20 ip-api.com 2->20 26 Found malware configuration 2->26 28 Malicious sample detected (through community Yara rule) 2->28 30 Multi AV Scanner detection for submitted file 2->30 32 9 other signatures 2->32 7 Your file name without extension goes here.exe 2 2->7         started        signatures3 process4 signatures5 34 Tries to detect sandboxes and other dynamic analysis tools (process name or module or function) 7->34 36 Writes to foreign memory regions 7->36 38 Allocates memory in foreign processes 7->38 40 Injects a PE file into a foreign processes 7->40 10 RegSvcs.exe 14 2 7->10         started        14 WerFault.exe 19 16 7->14         started        16 RegSvcs.exe 7->16         started        process6 dnsIp7 22 ip-api.com 208.95.112.1, 49705, 80 TUT-ASUS United States 10->22 24 terminal4.veeblehosting.com 108.170.55.202, 49707, 587 SSASN2US United States 10->24 42 Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc) 10->42 44 Queries sensitive video device information (via WMI, Win32_VideoController, often done to detect virtual machines) 10->44 46 Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines) 10->46 48 4 other signatures 10->48 signatures8
Score:
98%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/a54d0aecd2d24ce47e9773d031b1995a6fe81b9508e02553aef5bd62ae5dcd8f
Detection:
agenttesla
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Link:
https://mwdb.cert.pl/sample/a54d0aecd2d24ce47e9773d031b1995a6fe81b9508e02553aef5bd62ae5dcd8f/
Threat name:
ByteCode-MSIL.Spyware.Negasteal
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Status:
Malicious
First seen:
2024-06-18 08:44:27 UTC
File Type:
PE+ (.Net Exe)
Extracted files:
2
AV detection:
23 of 38 (60.53%)
Threat level:
  2/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=uvgqv3gs2jgoi7uxopiddmmzljx6qg4vbdqcku5o6w6wfls5zwhq._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/240618-km5xtszdpn/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Suspicious use of SetThreadContext
Looks up external IP address via web service
AgentTesla
Verdict:
Suspicious
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/9327d1ba-6ffc-4444-9d06-39caa5d0e433
Unpacked files
SH256 hash:
a54d0aecd2d24ce47e9773d031b1995a6fe81b9508e02553aef5bd62ae5dcd8f
MD5 hash:
8f6133a74122aa1a27d18e48c2a3fa0c
SHA1 hash:
b71bdccb8b06c081589d3063fa02874ffdd2450e
Link:
https://www.unpac.me/results/4deb6cdc-a6f4-4070-bdda-4277ef0e8fa2/
Malware family:
AgentTesla
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Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/a54d0aecd2d2/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Formbook
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/a54d0aecd2d24ce47e9773d031b1995a6fe81b9508e02553aef5bd62ae5dcd8f

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:AgentTeslaV5
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Author:ClaudioWayne
Description:AgentTeslaV5 infostealer payload
Rule name:Agenttesla_type2
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Author:JPCERT/CC Incident Response Group
Description:detect Agenttesla in memory
Reference:internal research
Rule name:DebuggerCheck__RemoteAPI
Create hunting rule
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:pe_imphash
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Rule name:pe_no_import_table
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Description:Detect pe file that no import table
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 a54d0aecd2d24ce47e9773d031b1995a6fe81b9508e02553aef5bd62ae5dcd8f

(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 (GUARD_CF)high

Comments