MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 b42d8673bc49b85b845318b9b46fe480ce9739075b5607bdfa8404c9d4a4699e. 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 24 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: b42d8673bc49b85b845318b9b46fe480ce9739075b5607bdfa8404c9d4a4699e
SHA3-384 hash: f5357b6ed5b9c2e99e7345aaefcfee8dfd29e604a42d5c9d740cad4f59a320dc4dc68d448ba7fdf3d675c5acc35dd82a
SHA1 hash: 18756d4518b84892c107269cce9fe1efa4408eb5
MD5 hash: 445696c3e1b8806cfcce4ae5365c211e
humanhash: lion-sixteen-spaghetti-don
File name:kredi Karti Hesap Özeti- 4508 0519.pdf.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:6'041'088 bytes
First seen:2025-09-01 09:31:05 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash d610f264b813f1c10d01ec7a420766af (1 x Formbook)
ssdeep 49152:7gmcbBru1rU0tbcOLvjKDuj5dfeGCYmceAYb1AD/UJ1Ef9sk/IRUntyE4dAt/aXH:gIrXiJ3ch33Md0/axF
Threatray 231 similar samples on MalwareBazaar
TLSH T11F56BE15E3E901A5E837EA38C7658333DAB17D511731D14F0A99F60A1F73AA04B2FB26
TrID 48.7% (.EXE) Win64 Executable (generic) (10522/11/4)
23.3% (.EXE) Win16 NE executable (generic) (5038/12/1)
9.3% (.EXE) OS/2 Executable (generic) (2029/13)
9.2% (.EXE) Generic Win/DOS Executable (2002/3)
9.2% (.EXE) DOS Executable Generic (2000/1)
Magika pebin
Reporter abuse_ch
Tags:exe FormBook geo TUR

Intelligence

File Origin
# of uploads :
1
# of downloads :
83
Origin country :
SE SE
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
kredi Karti Hesap Özeti- 4508 0519.pdf.exe
Verdict:
No threats detected
Analysis date:
2025-09-01 09:45:35 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/c5ef6baf-9a78-422c-99fd-0cb5a54ebaca

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
Formbook
Create hunting rule
Link:
https://www.capesandbox.com/analysis/24490/
Verdict:
Malicious
Score:
93.3%
Link:
https://cyber-fortress.com/docs/result/index.php?id=68b56809eb163e0ec183f88d
Tags:
underscore emotet
Result
Verdict:
Malware
Maliciousness:

Behaviour
Launching a process
Searching for synchronization primitives
Launching the default Windows debugger (dwwin.exe)
Sending a custom TCP request
Сreating synchronization primitives
Unauthorized injection to a system process
Verdict:
Likely Malicious
Threat level:
  7.5/10
Confidence:
100%
Tags:
crypto fingerprint masquerade microsoft_visual_cc packed
Link:
https://www.filescan.io/uploads/68b5686039a6221faa7876d8/reports/6d70dbc8-c462-4caa-98b6-6efb6185f67d/overview
Verdict:
Malicious
Labled as:
Win/malicious_confidence_60%
Link:
https://www.hybrid-analysis.com/sample/b42d8673bc49b85b845318b9b46fe480ce9739075b5607bdfa8404c9d4a4699e
Verdict:
Malicious
File Type:
exe x64
First seen:
2025-09-01T05:57:00Z UTC
Last seen:
2025-09-01T05:57:00Z UTC
Hits:
~100
Link:
https://opentip.kaspersky.com/b42d8673bc49b85b845318b9b46fe480ce9739075b5607bdfa8404c9d4a4699e/results?tab=lookup
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/39a2b911-ec61-4244-a6cd-85ed76a71b39
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1768822
Signature
Allocates memory in foreign processes
Initial sample is a PE file and has a suspicious name
Injects a PE file into a foreign processes
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 submitted file
Performs DNS queries to domains with low reputation
Queues an APC in another process (thread injection)
Sigma detected: Suspicious Double Extension File Execution
Suricata IDS alerts for network traffic
Switches to a custom stack to bypass stack traces
Tries to harvest and steal browser information (history, passwords, etc)
Tries to steal Mail credentials (via file / registry access)
Uses an obfuscated file name to hide its real file extension (double extension)
Writes to foreign memory regions
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1768822 Sample: kredi Karti Hesap #U00d6zet... Startdate: 01/09/2025 Architecture: WINDOWS Score: 100 33 www.wandercomputer.xyz 2->33 35 www.generatorplatform.xyz 2->35 37 15 other IPs or domains 2->37 45 Suricata IDS alerts for network traffic 2->45 47 Multi AV Scanner detection for submitted file 2->47 49 Yara detected FormBook 2->49 53 3 other signatures 2->53 11 kredi Karti Hesap #U00d6zeti- 4508 0519.pdf.exe 2->11         started        signatures3 51 Performs DNS queries to domains with low reputation 35->51 process4 signatures5 63 Writes to foreign memory regions 11->63 65 Allocates memory in foreign processes 11->65 67 Injects a PE file into a foreign processes 11->67 14 ngen.exe 11->14         started        17 WerFault.exe 19 16 11->17         started        process6 signatures7 69 Maps a DLL or memory area into another process 14->69 19 ueRdVRRSFNw.exe 14->19 injected process8 process9 21 cmd.exe 13 19->21         started        signatures10 55 Tries to steal Mail credentials (via file / registry access) 21->55 57 Tries to harvest and steal browser information (history, passwords, etc) 21->57 59 Modifies the context of a thread in another process (thread injection) 21->59 61 3 other signatures 21->61 24 iLi5WTNZUaM9H.exe 21->24 injected 27 chrome.exe 21->27         started        29 firefox.exe 21->29         started        process11 dnsIp12 39 www.robusthalle.pro 89.31.143.90, 49743, 49744, 49745 QSC-AG-IPXDE Germany 24->39 41 www.meldora.site 162.0.239.7, 49707, 49708, 49709 NAMECHEAP-NETUS Canada 24->41 43 7 other IPs or domains 24->43 31 WerFault.exe 4 27->31         started        process13
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/b42d8673bc49b85b845318b9b46fe480ce9739075b5607bdfa8404c9d4a4699e
Verdict:
inconclusive
YARA:
4 match(es)
Tags:
Executable PDB Path PE (Portable Executable) PE File Layout Win 64 Exe x64
Link:
https://app.malva.re/file/445696c3e1b8806cfcce4ae5365c211e
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/b42d8673bc49b85b845318b9b46fe480ce9739075b5607bdfa8404c9d4a4699e/
Threat name:
Win64.Trojan.Generic
Create hunting rule
Status:
Suspicious
First seen:
2025-09-01 09:03:56 UTC
File Type:
PE+ (Exe)
Extracted files:
1
AV detection:
15 of 24 (62.50%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=wqwym454jg4fxbctdc43i37eqdhjooihlnlappp2qqcmtvfengpa._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Similar samples:
0caa6c97af41a5ad8a620c85a678d6173355f04e998a86a713a0d2037e56c48c
Formbook
50c0d11e8f7153f1129643673ded00e74fe4cb9e929b0a97d9c5bcf983805e41
Formbook
515261ba7c77ffd970a3bb7e09d3f54fc5184d72ee48082fd3ac145f004f6e6e
Formbook
67f8ffb1f4fc84db43469e598a686406d32dae656ea8939f57d04f5d354666a8
Formbook
946a35262c7946b1314dfdda75f9f95f08bc35253b3cd070ee8561d8a4d27831
Formbook
af6376d7d5de38d0d7acf754db0d4c4f77ba49a48eb1cb4d240b16d3725d58dc
Formbook
b42d8673bc49b85b845318b9b46fe480ce9739075b5607bdfa8404c9d4a4699e
Formbook
error
Formbook
f0d86fe7ae5c108fb8246379af9cbb588ab7f810c69a7c9285cadd078edad032
Formbook
+ 221 additional samples on MalwareBazaar
Result
Malware family:
n/a
Score:
  5/10
Tags:
n/a
Link:
https://tria.ge/reports/250901-ljcbsadq9s/
Behaviour
Suspicious use of WriteProcessMemory
Program crash
Suspicious use of SetThreadContext
Verdict:
Suspicious
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/b0db6107-8764-4280-8eaf-5d31c59bd291
Unpacked files
SH256 hash:
b42d8673bc49b85b845318b9b46fe480ce9739075b5607bdfa8404c9d4a4699e
MD5 hash:
445696c3e1b8806cfcce4ae5365c211e
SHA1 hash:
18756d4518b84892c107269cce9fe1efa4408eb5
Link:
https://www.unpac.me/results/d461c2bd-937c-4eda-9347-d03bf95f48a4/
Malware family:
FormBook
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/b42d8673bc49/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/b42d8673bc49b85b845318b9b46fe480ce9739075b5607bdfa8404c9d4a4699e

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:CP_AllMal_Detector
Create hunting rule
Author:DiegoAnalytics
Description:CrossPlatform All Malwares Detector: Detect PE, ELF, Mach-O, scripts, archives; overlay, obfuscation, encryption, spoofing, hiding, high entropy, network communication
Rule name:CP_Script_Inject_Detector
Create hunting rule
Author:DiegoAnalytics
Description:Detects attempts to inject code into another process across PE, ELF, Mach-O binaries
Rule name:DebuggerCheck__API
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:DebuggerCheck__GlobalFlags
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:DebuggerCheck__MemoryWorkingSet
Create hunting rule
Author:Fernando Mercês
Description:Anti-debug process memory working set size check
Reference:http://www.gironsec.com/blog/2015/06/anti-debugger-trick-quicky/
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:DetectEncryptedVariants
Create hunting rule
Author:Zinyth
Description:Detects 'encrypted' in ASCII, Unicode, base64, or hex-encoded
Rule name:dgaagas
Create hunting rule
Author:Harshit
Description:Uses certutil.exe to download a file named test.txt
Rule name:golang_bin_JCorn_CSC846
Create hunting rule
Author:Justin Cornwell
Description:CSC-846 Golang detection ruleset
Rule name:Jupyter_infostealer
Create hunting rule
Author:CD_R0M_
Description:Rule for Jupyter Infostealer/Solarmarker malware from september 2021-December 2022
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:pe_detect_tls_callbacks
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:shellcode
Create hunting rule
Author:nex
Description:Matched shellcode byte patterns
Rule name:Sus_CMD_Powershell_Usage
Create hunting rule
Author:XiAnzheng
Description:May Contain(Obfuscated or no) Powershell or CMD Command that can be abused by threat actor(can create FP)
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)
Rule name:ThreadControl__Context
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara

File information

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

Cape
Cape
https://www.capesandbox.com/analysis/24490/

Comments