MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 617b4ff46fd1b162ad5e7b780297ce197fdcf199449c5afda6b389d0c2755073. 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: 16


Intelligence 16 IOCs YARA 5 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 617b4ff46fd1b162ad5e7b780297ce197fdcf199449c5afda6b389d0c2755073
SHA3-384 hash: cccb3d6d58a82b1fe0689345cea60aa40c26e343951f5399737c007a9216232c8df3e836f9438ad9c10153ac0b555a58
SHA1 hash: c84865aea1b5fd8b7c2b506ba317928af6bb57e1
MD5 hash: 6fb61b541b2245afb18814909c99a313
humanhash: social-potato-purple-table
File name:New.PO-RFQ20250709.scr
Download: download sample
Signature Formbook
Create hunting rule
File size:750'080 bytes
First seen:2025-07-10 06:33:01 UTC
Last seen:2025-07-10 09:32:23 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'744 x AgentTesla, 19'608 x Formbook, 12'242 x SnakeKeylogger)
ssdeep 12288:VKzjuyojGYZJc+0fQj7P1MrgqN/0XZ/ez2G7BBGXytENR6/Zv8Xfz:Ez4jGYI/fQMrlNQrMsNwB8
TLSH T182F4029C6A8EE913CC544BB545E3E37541F89FC8F812D35BCAD97CEB3C6E2952801292
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 74f4dcccc8ccdcd4 (1 x PureCrypter, 1 x Formbook)
Reporter threatcat_ch
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
2
# of downloads :
40
Origin country :
CH CH
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
New.PO-RFQ20250709.scr
Verdict:
No threats detected
Analysis date:
2025-07-10 06:39:31 UTC
Tags:
netreactor
Link:
https://app.any.run/tasks/ceacee80-0aa0-47af-a947-5ea58dc33095

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/13748/
Verdict:
Malicious
Score:
94.9%
Link:
https://cyber-fortress.com/docs/result/index.php?id=686f5eb3900df8e7f869410f
Tags:
shell micro spawn
Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Sending a custom TCP request
Creating a process with a hidden window
Unauthorized injection to a recently created process
Restart of the analyzed sample
Creating a file
Adding an exclusion to Microsoft Defender
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
base64 bitmap masquerade obfuscated obfuscated packed packed packed reconnaissance roboski stego vbnet
Link:
https://www.filescan.io/uploads/686f5eb190b9181d715f61af/reports/6f9248d6-677f-4c50-8b08-857431950826/overview
Verdict:
Malicious
Labled as:
Win/malicious_confidence_100%
Link:
https://www.hybrid-analysis.com/sample/617b4ff46fd1b162ad5e7b780297ce197fdcf199449c5afda6b389d0c2755073
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/aee26042-8c11-4ec7-b08d-bfe340f703af
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1733447
Signature
.NET source code contains method to dynamically call methods (often used by packers)
.NET source code contains potential unpacker
Adds a directory exclusion to Windows Defender
Initial sample is a PE file and has a suspicious name
Injects a PE file into a foreign processes
Joe Sandbox ML detected suspicious sample
Loading BitLocker PowerShell Module
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: Powershell Base64 Encoded MpPreference Cmdlet
Sigma detected: Xwizard DLL Sideloading
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)
Yara detected AntiVM3
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1733447 Sample: New.PO-RFQ20250709.scr.exe Startdate: 11/07/2025 Architecture: WINDOWS Score: 100 42 www.78451770.xyz 2->42 44 www.izmitkurye.net 2->44 46 www.51580.vip 2->46 54 Suricata IDS alerts for network traffic 2->54 56 Multi AV Scanner detection for submitted file 2->56 58 Yara detected FormBook 2->58 62 7 other signatures 2->62 11 New.PO-RFQ20250709.scr.exe 4 2->11         started        signatures3 60 Performs DNS queries to domains with low reputation 42->60 process4 file5 40 C:\Users\...40ew.PO-RFQ20250709.scr.exe.log, ASCII 11->40 dropped 64 Adds a directory exclusion to Windows Defender 11->64 66 Injects a PE file into a foreign processes 11->66 15 New.PO-RFQ20250709.scr.exe 11->15         started        18 powershell.exe 23 11->18         started        20 New.PO-RFQ20250709.scr.exe 11->20         started        signatures6 process7 signatures8 76 Maps a DLL or memory area into another process 15->76 22 qeHpFYjOt9gT.exe 15->22 injected 78 Loading BitLocker PowerShell Module 18->78 24 conhost.exe 18->24         started        26 WmiPrvSE.exe 18->26         started        process9 process10 28 xwizard.exe 13 22->28         started        signatures11 68 Tries to steal Mail credentials (via file / registry access) 28->68 70 Tries to harvest and steal browser information (history, passwords, etc) 28->70 72 Modifies the context of a thread in another process (thread injection) 28->72 74 3 other signatures 28->74 31 GF87nPn7TUOsVS.exe 28->31 injected 34 chrome.exe 28->34         started        36 firefox.exe 28->36         started        process12 dnsIp13 48 www.izmitkurye.net 206.214.81.10, 49691, 80 EONIX-COMMUNICATIONS-ASBLOCK-62904US United States 31->48 50 www.78451770.xyz 5.189.151.248, 49696, 49697, 49698 CONTABODE Germany 31->50 52 www.51580.vip 154.205.94.232, 49692, 49693, 49694 ASN-QUADRANET-GLOBALUS Seychelles 31->52 38 WerFault.exe 4 34->38         started        process14
Score:
99%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/617b4ff46fd1b162ad5e7b780297ce197fdcf199449c5afda6b389d0c2755073
Verdict:
inconclusive
YARA:
5 match(es)
Tags:
.Net Executable PDB Path PE (Portable Executable) SOS: 0.02 Win 32 Exe x86
Link:
https://app.malva.re/file/6fb61b541b2245afb18814909c99a313
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/617b4ff46fd1b162ad5e7b780297ce197fdcf199449c5afda6b389d0c2755073/
Verdict:
Malicious
Threat:
trojan.msil/cryp
Link:
https://tip.neiki.dev/file/617b4ff46fd1b162ad5e7b780297ce197fdcf199449c5afda6b389d0c2755073
Threat name:
ByteCode-MSIL.Spyware.Negasteal
Create hunting rule
Status:
Malicious
First seen:
2025-07-10 01:55:47 UTC
File Type:
PE (.Net Exe)
Extracted files:
8
AV detection:
17 of 23 (73.91%)
Threat level:
  2/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=mf5u75dp2gywflk6pn4aff6odf75z4mzisofv7ngwoe5bqtvkbzq._file
Verdict:
malicious
Label(s):
unc_loader_037
Create hunting rule
Similar samples:
error
Formbook
Result
Malware family:
formbook
Create hunting rule
Score:
  10/10
Tags:
family:formbook discovery execution rat spyware stealer trojan
Link:
https://tria.ge/reports/250710-hbcqss1vgv/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
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/de8fd35c-322a-40f9-9c04-d37cafcc7860
Unpacked files
SH256 hash:
617b4ff46fd1b162ad5e7b780297ce197fdcf199449c5afda6b389d0c2755073
MD5 hash:
6fb61b541b2245afb18814909c99a313
SHA1 hash:
c84865aea1b5fd8b7c2b506ba317928af6bb57e1
Link:
https://www.unpac.me/results/19a7872d-cdc8-4f40-948d-16168e3761b5/
SH256 hash:
deedad54fc494533b051719d532a9a9bc65ffc2e8cc44b4b859c9ac231a20325
MD5 hash:
231c715477029f44450a215c5c641326
SHA1 hash:
0ff008fba7a5f8f0e992b84c51ad7b829c2dabd9
Detections:
SUSP_OBF_NET_Reactor_Indicators_Jan24
Create hunting rule
INDICATOR_EXE_Packed_SmartAssembly
Create hunting rule
Link:
https://www.unpac.me/results/19a7872d-cdc8-4f40-948d-16168e3761b5/
Parent samples :
47ebb83b1ab3973a77df9332fbefe2ec6c491ecbe26b4453855497af6504579a
617b4ff46fd1b162ad5e7b780297ce197fdcf199449c5afda6b389d0c2755073
SH256 hash:
0ddd1763ddfd757447421a0c727417cfbca94e45b1d0e21da0b6b4b01f6cebdf
MD5 hash:
9decc1723b1d3bac6821d1c62c7218ec
SHA1 hash:
2d1111764fc832c35f37d176a9788aaf7dbef0fd
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/19a7872d-cdc8-4f40-948d-16168e3761b5/
SH256 hash:
daf844154ce497cf94b19b53d1b6e4206e7cc92964f4f5bbe916a8ae943472d8
MD5 hash:
778111e744b334dc143961345d8b1ba2
SHA1 hash:
754f258b9ee2f1aef2b38dc0d061180e42035a8a
Link:
https://www.unpac.me/results/19a7872d-cdc8-4f40-948d-16168e3761b5/
SH256 hash:
b5c39d1b9ff5b8aafc1d8ba4866ded515dc9cc96e63d3b22aae76fe8ad874805
MD5 hash:
aa529028682c7370e2d54684e5756d37
SHA1 hash:
5f5be58d128ea3873e01e003861c4effc92f5089
Link:
https://www.unpac.me/results/19a7872d-cdc8-4f40-948d-16168e3761b5/
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/617b4ff46fd1b162ad5e7b780297ce197fdcf199449c5afda6b389d0c2755073

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
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 617b4ff46fd1b162ad5e7b780297ce197fdcf199449c5afda6b389d0c2755073

(this sample)

  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/13748/

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