MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 3ff3db68a75d4c52f3910396564f35999b3571ed75850df0c403b851433582ec. 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: 19


Intelligence 19 IOCs YARA 7 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 3ff3db68a75d4c52f3910396564f35999b3571ed75850df0c403b851433582ec
SHA3-384 hash: f3b886f110aa7b61bfcb57a303e3c56c78f2ca2928a16c7d0c275c3cc3c4e0f7732387aa6ae91f7ec473a73dff279786
SHA1 hash: 346c278ff772dca61aa1db5cd0bd4c81e01280b7
MD5 hash: 5db3a3bfabcf7612fcbe01828159beff
humanhash: nine-fanta-enemy-early
File name:NEW #PO02346611.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:657'928 bytes
First seen:2025-05-12 08:03:05 UTC
Last seen:2025-05-12 14:04:55 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'658 x AgentTesla, 19'469 x Formbook, 12'208 x SnakeKeylogger)
ssdeep 12288:QHlLUqm+PNOREdFnhrmBtAqi4nBVuRopulKtWMZT5jWWsSpuVG1kR:lqBFORonhUtti4OPlmWMG7r
Threatray 3'849 similar samples on MalwareBazaar
TLSH T1E0E401482B19DA0AC5E21FF00962D6F82BB56E5D9821C30BAFEABDDF75367013944353
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
dhash icon 4c1c1acaccc0c0c8 (2 x MassLogger, 2 x Formbook, 2 x RemcosRAT)
Reporter lowmal3
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
3
# of downloads :
433
Origin country :
DE DE
Vendor Threat Intelligence
Malware family:
formbook
Create hunting rule
ID:
1
File name:
NEWPO02346611.exe
Verdict:
Malicious activity
Analysis date:
2025-05-12 08:06:27 UTC
Tags:
formbook stealer netreactor xloader
Link:
https://app.any.run/tasks/14e762e2-513c-4015-ae75-8cb995dda76b

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection(s):
Win.Packed.Formbook-10021419-0
Create hunting rule

Verdict:
Malicious
Score:
96.5%
Link:
https://cyber-fortress.com/docs/result/index.php?id=6821ac034a59e5a2ce03d65b
Tags:
micro krypt 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
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:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
expired-cert invalid-signature obfuscated packed packed packer_detected signed vbnet
Link:
https://www.filescan.io/uploads/6821ab48bab2591d0655d202/reports/c8dd6b56-ab8f-41c9-bf52-9d335aaa3d4c/overview
Verdict:
Malicious
Labled as:
Win/malicious_confidence_100%
Link:
https://www.hybrid-analysis.com/sample/3ff3db68a75d4c52f3910396564f35999b3571ed75850df0c403b851433582ec
Malware family:
Formbook
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/f0d77c66-84f0-40ff-8593-2940b53c69c5
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1687634
Signature
.NET source code contains potential unpacker
Adds a directory exclusion to Windows Defender
Allocates memory in foreign processes
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
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
Suricata IDS alerts for network traffic
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: 1687634 Sample: NEW #PO02346611.exe Startdate: 12/05/2025 Architecture: WINDOWS Score: 100 60 www.uori-usa-store.shop 2->60 62 www.tuber.vip 2->62 64 10 other IPs or domains 2->64 78 Suricata IDS alerts for network traffic 2->78 80 Found malware configuration 2->80 82 Malicious sample detected (through community Yara rule) 2->82 84 11 other signatures 2->84 11 NEW #PO02346611.exe 7 2->11         started        15 psCzzsB.exe 5 2->15         started        signatures3 process4 file5 52 C:\Users\user\AppData\Roaming\psCzzsB.exe, PE32 11->52 dropped 54 C:\Users\user\...\psCzzsB.exe:Zone.Identifier, ASCII 11->54 dropped 56 C:\Users\user\AppData\Local\...\tmpC67A.tmp, XML 11->56 dropped 58 C:\Users\user\...58EW #PO02346611.exe.log, ASCII 11->58 dropped 94 Writes to foreign memory regions 11->94 96 Allocates memory in foreign processes 11->96 98 Adds a directory exclusion to Windows Defender 11->98 17 vbc.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        100 Multi AV Scanner detection for dropped file 15->100 102 Injects a PE file into a foreign processes 15->102 26 vbc.exe 15->26         started        28 schtasks.exe 15->28         started        signatures6 process7 signatures8 68 Modifies the context of a thread in another process (thread injection) 17->68 70 Maps a DLL or memory area into another process 17->70 72 Sample uses process hollowing technique 17->72 76 3 other signatures 17->76 30 explorer.exe 59 1 17->30 injected 74 Loading BitLocker PowerShell Module 20->74 33 conhost.exe 20->33         started        35 WmiPrvSE.exe 20->35         started        37 conhost.exe 22->37         started        39 conhost.exe 24->39         started        41 conhost.exe 28->41         started        process9 dnsIp10 66 www.loot.tel 195.253.75.114, 49727, 80 KNIPPWORLDWIDE Germany 30->66 43 msiexec.exe 30->43         started        46 cmd.exe 30->46         started        process11 signatures12 86 Modifies the context of a thread in another process (thread injection) 43->86 88 Maps a DLL or memory area into another process 43->88 90 Switches to a custom stack to bypass stack traces 43->90 48 cmd.exe 43->48         started        92 Tries to detect virtualization through RDTSC time measurements 46->92 process13 process14 50 conhost.exe 48->50         started       
Score:
99%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/3ff3db68a75d4c52f3910396564f35999b3571ed75850df0c403b851433582ec
Detection:
formbook
Create hunting rule
Link:
https://mwdb.cert.pl/sample/3ff3db68a75d4c52f3910396564f35999b3571ed75850df0c403b851433582ec/
Threat name:
ByteCode-MSIL.Backdoor.FormBook
Create hunting rule
Status:
Malicious
First seen:
2025-05-12 04:28:17 UTC
File Type:
PE (.Net Exe)
Extracted files:
15
AV detection:
22 of 24 (91.67%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=h7z5w2fhlvgff44raolfmtzvtgntk4pnowcq34geao4fcqzvqlwa._file
Verdict:
malicious
Label(s):
unc_loader_037
Create hunting rule
Similar samples:
05facf2fa75c9119aaea6867fa979d3001d48847843e776d7123a5542621ef02
Formbook
61823f8b8948aa13ec857248830031280ae6cb0eb0b64254fca74983782ed9ce
Formbook
9eb1c7bdb23478e2e70450b194ca95191dba36d8bf73309cf0c9e2d906fe56ae
Formbook
d4a33be36cd0905651ce69586542ae9bb5763feddc9d1af98e90ff86a6914c0e
Formbook
e0e7d67763efac156e039e3b9b8e4cf0e269109164788c4901f338f1399699ee
Formbook
+ 3'839 additional samples on MalwareBazaar
Result
Malware family:
formbook
Create hunting rule
Score:
  10/10
Tags:
family:formbook campaign:bi14 discovery execution rat spyware stealer trojan
Link:
https://tria.ge/reports/250512-jxtrwazsex/
Behaviour
Modifies registry class
Scheduled Task/Job: Scheduled Task
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
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
Uses the VBS compiler for execution
Command and Scripting Interpreter: PowerShell
Formbook payload
Formbook
Formbook family
Verdict:
Malicious
Tags:
Win.Packed.Formbook-10021419-0
YARA:
n/a
Link:
https://app.threat.zone/submission/6d1b4175-aa82-4559-ad6a-e46253c48796
Unpacked files
SH256 hash:
3ff3db68a75d4c52f3910396564f35999b3571ed75850df0c403b851433582ec
MD5 hash:
5db3a3bfabcf7612fcbe01828159beff
SHA1 hash:
346c278ff772dca61aa1db5cd0bd4c81e01280b7
Link:
https://www.unpac.me/results/022d7206-9248-4784-ac15-c8ff23a76481/
SH256 hash:
e65bc4732f18966eeaba9700bb83489074f63082cf28bc05e90d278a1761ac25
MD5 hash:
f568aa0b7be96ed2102e8de46d59248b
SHA1 hash:
5031c8d479988ff22716c13646fc6ba8cd6a78d8
Detections:
SUSP_OBF_NET_Reactor_Indicators_Jan24
Create hunting rule
Link:
https://www.unpac.me/results/022d7206-9248-4784-ac15-c8ff23a76481/
Parent samples :
eba602f26ca14d5e494059001ecf363110ba504d9e0184b8abfa45905bd650cc
3ff3db68a75d4c52f3910396564f35999b3571ed75850df0c403b851433582ec
285bd22ba49a3de603e9fff856a0bd3111e43629ad29e24bb41178afd93ece23
54f015287731308328345efdc18a593d3b5a57efdd04278efb9da7f5127df37f
ca081d2e9e512e1516edc180262c4309dda83ad714a281abd26fc1a658bced01
c3f39d499f8599e009697219a0c0f9b5fd91848b693fcaf4abdc0d15bdc67de0
44123cf2ed8f575c4643cacfcd51e18188edeca34b343af433c98ac03fb691ea
76f35c8ecea90bb9709af24f9183489a711f04fc00f26d3cae74fbcdf7bde6c5
d539ab19fd873bd36c22b38f3d8a85683220a7bcce13a9c962652d6165c33c2e
ef9e1440789a46cd00ebe7bde8526eefd00e6d1363299d3ae3c1b01e891d7b35
SH256 hash:
8a315695d457b34eefa1b85108ce3285abe64bec78a226f97566fe813f831125
MD5 hash:
de2cc2c562c14e7ea61825847d0f0703
SHA1 hash:
920b20b7ce4eba2f9766f086a75b9172e47a7033
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/022d7206-9248-4784-ac15-c8ff23a76481/
SH256 hash:
d95af64d63e35a6a0c7962b9cf6a1f359f4588e85985129d0da628eb08dc7d77
MD5 hash:
2080a63b6709fdd1d070de2fd2017ed7
SHA1 hash:
67e0b2512ab173b34ff436e5c42552973ff0277e
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/022d7206-9248-4784-ac15-c8ff23a76481/
Parent samples :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 family:
FormBook
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/3ff3db68a75d/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/3ff3db68a75d4c52f3910396564f35999b3571ed75850df0c403b851433582ec

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:INDICATOR_KB_CERT_7c1118cbbadc95da3752c46e47a27438
Create hunting rule
Author:ditekSHen
Description:Detects executables signed with stolen, revoked or invalid certificates
Rule name:NET
Create hunting rule
Author:malware-lu
Rule name:NETexecutableMicrosoft
Create hunting rule
Author:malware-lu
Rule name:PE_Digital_Certificate
Create hunting rule
Author:albertzsigovits
Rule name:pe_imphash
Create hunting rule
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

Executable exe 3ff3db68a75d4c52f3910396564f35999b3571ed75850df0c403b851433582ec

(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