MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 3f616f7935f4c97239699196e64056b45be53e73d02a0b70e482c886e3a13965. 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: 20


Intelligence 20 IOCs YARA 16 File information Comments
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SHA256 hash: 3f616f7935f4c97239699196e64056b45be53e73d02a0b70e482c886e3a13965
SHA3-384 hash: ede7ed2fa9e806ac174c1f8d83bf52528c1b90a8ba60d722584b504ea69cfc1c45d1cc3971bcccde5ea0ff257b86c221
SHA1 hash: 8f078b4df5fac9a5d444d9c4a93b41397a83781d
MD5 hash: eb7ece394a0b96ac1ac2bc47dafae03e
humanhash: delta-beer-king-early
File name:SecuriteInfo.com.Win32.CrypterX-gen.2291.14733
Download: download sample
Signature Formbook
Create hunting rule
File size:723'456 bytes
First seen:2025-03-11 05:14:55 UTC
Last seen:2025-03-11 12:55:16 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'740 x AgentTesla, 19'600 x Formbook, 12'241 x SnakeKeylogger)
ssdeep 12288:ZP1Luc154pDz9C/xZfBH9GOyCOL9YQfKGdxc1JcNHcw7wI0ju:ZP1LubDz9OthOZYgPdC1JcNHcT
Threatray 4'835 similar samples on MalwareBazaar
TLSH T11FF4F1657615B98FDB6B8DB08913D93083F06E7AA106F382CCD7ADEBB48C7449A11353
TrID 71.1% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
10.2% (.EXE) Win64 Executable (generic) (10522/11/4)
6.3% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
4.3% (.EXE) Win32 Executable (generic) (4504/4/1)
2.0% (.ICL) Windows Icons Library (generic) (2059/9)
Magika pebin
Reporter SecuriteInfoCom
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
5
# of downloads :
441
Origin country :
FR FR
Vendor Threat Intelligence
Malware family:
formbook
Create hunting rule
ID:
1
File name:
ATTACHED-PO.zip
Verdict:
Malicious activity
Analysis date:
2025-03-11 03:24:47 UTC
Tags:
arch-exec formbook stealer xloader
Link:
https://app.any.run/tasks/43a775d2-c87e-4ef1-9415-6348f3243e10

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Verdict:
Malicious
Score:
97.4%
Link:
https://cyber-fortress.com/docs/result/index.php?id=67cfd1511f777fe30608d773
Tags:
virus micro msil
Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Creating a window
Сreating synchronization primitives
Creating a process with a hidden window
Creating a file in the %AppData% directory
Enabling the 'hidden' option for recently created files
Adding an access-denied ACE
Creating a file in the %temp% directory
Launching a process
Creating a file
Launching cmd.exe command interpreter
Setting browser functions hooks
Forced shutdown of a system process
Adding an exclusion to Microsoft Defender
Enabling autorun by creating a file
Unauthorized injection to a system process
Unauthorized injection to a browser process
Verdict:
Likely Malicious
Threat level:
  7.5/10
Confidence:
100%
Tags:
obfuscated obfuscated packed packed packer_detected
Link:
https://www.filescan.io/uploads/67cfc6e5e95d0f9029e73470/reports/f494f6f1-b347-4983-938a-2431a7c2bf39/overview
Verdict:
Malicious
Labled as:
Win/malicious_confidence_100%
Link:
https://www.hybrid-analysis.com/sample/3f616f7935f4c97239699196e64056b45be53e73d02a0b70e482c886e3a13965
Result
Verdict:
SUSPICIOUS
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:
Formbook
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/8ba7b4f6-373e-4f83-8d95-2b254e49bcff
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1634906
Signature
.NET source code contains potential unpacker
Adds a directory exclusion to Windows Defender
Allocates memory in foreign processes
Antivirus / Scanner detection for submitted sample
Antivirus detection for dropped file
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Found direct / indirect Syscall (likely to bypass EDR)
Found malware configuration
Injects a PE file into a foreign processes
Joe Sandbox ML detected suspicious sample
Loading BitLocker PowerShell Module
Malicious sample detected (through community Yara rule)
Maps a DLL or memory area into another process
Modifies the context of a thread in another process (thread injection)
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Queues an APC in another process (thread injection)
Sample uses process hollowing technique
Sigma detected: Powershell Base64 Encoded MpPreference Cmdlet
Sigma detected: Scheduled temp file as task from temp location
Switches to a custom stack to bypass stack traces
Tries to detect virtualization through RDTSC time measurements
Uses schtasks.exe or at.exe to add and modify task schedules
Writes to foreign memory regions
Yara detected AntiVM3
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1634906 Sample: SecuriteInfo.com.Win32.Cryp... Startdate: 11/03/2025 Architecture: WINDOWS Score: 100 59 www.zgtl.click 2->59 61 www.ummitpointconsulting.net 2->61 63 9 other IPs or domains 2->63 77 Found malware configuration 2->77 79 Malicious sample detected (through community Yara rule) 2->79 81 Antivirus detection for URL or domain 2->81 83 9 other signatures 2->83 11 SecuriteInfo.com.Win32.CrypterX-gen.2291.14733.exe 7 2->11         started        15 JZuQDUwjwLYYnq.exe 5 2->15         started        signatures3 process4 file5 51 C:\Users\user\AppData\...\JZuQDUwjwLYYnq.exe, PE32 11->51 dropped 53 C:\...\JZuQDUwjwLYYnq.exe:Zone.Identifier, ASCII 11->53 dropped 55 C:\Users\user\AppData\Local\...\tmpC706.tmp, XML 11->55 dropped 57 SecuriteInfo.com.W....2291.14733.exe.log, ASCII 11->57 dropped 93 Uses schtasks.exe or at.exe to add and modify task schedules 11->93 95 Writes to foreign memory regions 11->95 97 Allocates memory in foreign processes 11->97 103 2 other signatures 11->103 17 RegSvcs.exe 11->17         started        20 powershell.exe 23 11->20         started        22 powershell.exe 23 11->22         started        24 schtasks.exe 1 11->24         started        99 Antivirus detection for dropped file 15->99 101 Multi AV Scanner detection for dropped file 15->101 26 RegSvcs.exe 15->26         started        28 schtasks.exe 15->28         started        signatures6 process7 signatures8 65 Modifies the context of a thread in another process (thread injection) 17->65 67 Maps a DLL or memory area into another process 17->67 69 Sample uses process hollowing technique 17->69 75 2 other signatures 17->75 30 explorer.exe 86 1 17->30 injected 71 Loading BitLocker PowerShell Module 20->71 32 conhost.exe 20->32         started        34 WmiPrvSE.exe 20->34         started        36 conhost.exe 22->36         started        38 conhost.exe 24->38         started        73 Found direct / indirect Syscall (likely to bypass EDR) 26->73 40 conhost.exe 28->40         started        process9 process10 42 svchost.exe 30->42         started        45 chkdsk.exe 30->45         started        signatures11 85 Modifies the context of a thread in another process (thread injection) 42->85 87 Maps a DLL or memory area into another process 42->87 89 Tries to detect virtualization through RDTSC time measurements 42->89 91 Switches to a custom stack to bypass stack traces 42->91 47 cmd.exe 42->47         started        process12 process13 49 conhost.exe 47->49         started       
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/3f616f7935f4c97239699196e64056b45be53e73d02a0b70e482c886e3a13965
Detection:
formbook
Create hunting rule
Link:
https://mwdb.cert.pl/sample/3f616f7935f4c97239699196e64056b45be53e73d02a0b70e482c886e3a13965/
Threat name:
Win32.Trojan.CrypterX
Create hunting rule
Status:
Malicious
First seen:
2025-03-11 02:53:23 UTC
File Type:
PE (.Net Exe)
Extracted files:
11
AV detection:
25 of 38 (65.79%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=h5qw66jv6texeoljsglomqcwwrn6kptt2avaw4heqleiny5bhfsq._file
Verdict:
malicious
Label(s):
unc_loader_037
Create hunting rule
formbook
Create hunting rule
Similar samples:
12fb27d7a59c168a82317baa0b127b8a826cc98dd108fc37fd022d8a842b06bc
Formbook
22d92af6c8a273dc5a9e69e37ccfb5ffe6e7d7f0c7a46ee6b9f7e5cb34402128
Formbook
a779cf3623ccd0238d0b5d3f01dcc911e1538a1c0a656442234b4c3335453607
Formbook
d6c03cce5773652c4cb266084f901b331550d57a656240d20c288484657cd701
Formbook
ee888cbdcfea8296d9a839157d62b73229bf06f0446567b529867181bb807a77
Formbook
error
Formbook
+ 4'825 additional samples on MalwareBazaar
Result
Malware family:
formbook
Create hunting rule
Score:
  10/10
Tags:
family:formbook campaign:my18 discovery execution rat spyware stealer trojan
Link:
https://tria.ge/reports/250311-fxnzvaspz2/
Behaviour
Gathers network information
Modifies registry class
Scheduled Task/Job: Scheduled Task
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of UnmapMainImage
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
System Location Discovery: System Language Discovery
Suspicious use of SetThreadContext
Checks computer location settings
Command and Scripting Interpreter: PowerShell
Formbook payload
Formbook
Formbook family
Verdict:
Malicious
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/2600c6d7-cb7f-417b-81e4-7ecadbfcc5a5
Unpacked files
SH256 hash:
3f616f7935f4c97239699196e64056b45be53e73d02a0b70e482c886e3a13965
MD5 hash:
eb7ece394a0b96ac1ac2bc47dafae03e
SHA1 hash:
8f078b4df5fac9a5d444d9c4a93b41397a83781d
Link:
https://www.unpac.me/results/0aea1f47-ef59-4f92-96d7-de776313ca24/
SH256 hash:
ee2f0853910f1ddc3faf0099474ee3bad2ca48f01d91f77ca08904a4dbf65a0e
MD5 hash:
91e71c452cefc05e2c1df7a0289e0340
SHA1 hash:
10d90bf94bedacdd5c0ed29de9811396fe99678f
Detections:
INDICATOR_EXE_Packed_SmartAssembly
Create hunting rule
Link:
https://www.unpac.me/results/0aea1f47-ef59-4f92-96d7-de776313ca24/
SH256 hash:
a446dafa20b8482b2174c5543494e2501c0eb8de5efc1b349c768c3f5f102c8c
MD5 hash:
d100dc3294b55184ad3a6393630cdc28
SHA1 hash:
f807e476d58aabdecd2308c2a83b418bf4005786
Detections:
SUSP_OBF_NET_ConfuserEx_Name_Pattern_Jan24
Create hunting rule
SUSP_OBF_NET_Reactor_Indicators_Jan24
Create hunting rule
Link:
https://www.unpac.me/results/0aea1f47-ef59-4f92-96d7-de776313ca24/
SH256 hash:
12758ec96b1f25fb5e300c9ae98569c3c5b569baa723139ccacc475ab371301c
MD5 hash:
ef9ef67d5a832bfb7cff9fb441ff9a1b
SHA1 hash:
9013556c4afddcc2dfd23997350c0d74aae285fa
Detections:
win_formbook_w0
Create hunting rule
win_formbook_g0
Create hunting rule
win_formbook_auto
Create hunting rule
FormBook
Create hunting rule
Windows_Trojan_Formbook
Create hunting rule
Formbook
Create hunting rule
Link:
https://www.unpac.me/results/0aea1f47-ef59-4f92-96d7-de776313ca24/
Parent samples :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 family:
FormBook
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/3f616f7935f4/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/3f616f7935f4c97239699196e64056b45be53e73d02a0b70e482c886e3a13965

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:Check_OutputDebugStringA_iat
Create hunting rule
Rule name:DebuggerCheck__GlobalFlags
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:DebuggerCheck__QueryInfo
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:DebuggerHiding__Active
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:DebuggerHiding__Thread
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:golang_bin_JCorn_CSC846
Create hunting rule
Author:Justin Cornwell
Description:CSC-846 Golang detection ruleset
Rule name:MD5_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for MD5 constants
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:pe_no_import_table
Create hunting rule
Description:Detect pe file that no import table
Rule name:RIPEMD160_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for RIPEMD-160 constants
Rule name:SEH__vectored
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:SHA1_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for SHA1 constants
Rule name:Skystars_Malware_Imphash
Create hunting rule
Author:Skystars LightDefender
Description:imphash
Rule name:Sus_Obf_Enc_Spoof_Hide_PE
Create hunting rule
Author:XiAnzheng
Description:Check for Overlay, Obfuscating, Encrypting, Spoofing, Hiding, or Entropy Technique(can create FP)

File information

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

Malspam

Formbook

zip 05ca671e189c7bffed49b2d836c42ef87af3121a61eafb1db63e171feb8a77df

Formbook

Executable exe 3f616f7935f4c97239699196e64056b45be53e73d02a0b70e482c886e3a13965

(this sample)

  
Dropped by
SHA256 05ca671e189c7bffed49b2d836c42ef87af3121a61eafb1db63e171feb8a77df
  
Dropped by
MD5 ae3e2e80b9825c7fed1262b2e9dc3e10

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