MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 ba331599bb06083aa97ac39010b2d6b5c1078ed519b5ed4dcab97276c84ecedb. 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: 17


Intelligence 17 IOCs YARA 4 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: ba331599bb06083aa97ac39010b2d6b5c1078ed519b5ed4dcab97276c84ecedb
SHA3-384 hash: 6e366dc74011ed0a63318bbf451ca5adebbdd0c9d74645b261e404918b8aae3ef4339c7c1c9639acc8ed43c8886b1ec8
SHA1 hash: ac4e7fac40595cddd6d6f2b6ad788b55c495ae54
MD5 hash: 19585354cf3c0ce57654dbf653cdfa46
humanhash: mike-failed-monkey-two
File name:ba331599bb06083aa97ac39010b2d6b5c1078ed519b5ed4dcab97276c84ecedb
Download: download sample
Signature Formbook
Create hunting rule
File size:782'848 bytes
First seen:2025-03-10 12:19:17 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'658 x AgentTesla, 19'469 x Formbook, 12'208 x SnakeKeylogger)
ssdeep 12288:7ukl7W7Xzyu0IE/tBiZ9QFwBfSmxwPIph2mRAmHjLW:SklSPqeieB6mmOF6mu
TLSH T1B4F401682318CA57C69E8739D5B1E2B047FD8DDEB542E3979AD83EEF3596F1009010A3
TrID 69.7% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
10.0% (.EXE) Win64 Executable (generic) (10522/11/4)
6.2% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
4.2% (.EXE) Win32 Executable (generic) (4504/4/1)
1.9% (.EXE) Win16/32 Executable Delphi generic (2072/23)
Magika pebin
dhash icon b0b268e8ccd486a2 (11 x Formbook, 5 x SnakeKeylogger, 3 x MassLogger)
Reporter adrian__luca
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
1
# of downloads :
325
Origin country :
HU HU
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
ba331599bb06083aa97ac39010b2d6b5c1078ed519b5ed4dcab97276c84ecedb
Verdict:
Malicious activity
Analysis date:
2025-03-10 19:04:12 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/fec0bb85-5cbf-40e9-9dff-ad2fc95697c3

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Verdict:
Malicious
Score:
99.1%
Link:
https://cyber-fortress.com/docs/result/index.php?id=67cee5720d1b39e3a208bc1a
Tags:
virus shell msil
Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Сreating synchronization primitives
Connection attempt
Searching for synchronization primitives
Creating a window
Launching a service
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:
infostealer krypt obfuscated packed packed packer_detected remcos vbnet
Link:
https://www.filescan.io/uploads/67ced9064a3011c802cc2955/reports/f54be7f0-886b-4284-b634-4f60d4fb1de4/overview
Verdict:
Malicious
Labled as:
Trojan.Generic
Link:
https://www.hybrid-analysis.com/sample/ba331599bb06083aa97ac39010b2d6b5c1078ed519b5ed4dcab97276c84ecedb
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.
Malware family:
Formbook
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/df088fd6-1569-4c0c-b8cf-7fb21a99582a
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1633631
Signature
.NET source code contains potential unpacker
Adds a directory exclusion to Windows Defender
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 submitted file
Performs DNS queries to domains with low reputation
Queues an APC in another process (thread injection)
Sample uses process hollowing technique
Sigma detected: Powershell Base64 Encoded MpPreference Cmdlet
Switches to a custom stack to bypass stack traces
Tries to detect virtualization through RDTSC time measurements
Yara detected AntiVM3
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1633631 Sample: bYcyXnEv0T.exe Startdate: 10/03/2025 Architecture: WINDOWS Score: 100 36 www.urkiyekahvecisi.xyz 2->36 38 www.tpanekatotosite.top 2->38 40 10 other IPs or domains 2->40 44 Found malware configuration 2->44 46 Malicious sample detected (through community Yara rule) 2->46 48 Multi AV Scanner detection for submitted file 2->48 52 6 other signatures 2->52 11 bYcyXnEv0T.exe 11 4 2->11         started        signatures3 50 Performs DNS queries to domains with low reputation 36->50 process4 file5 34 C:\Users\user\AppData\...\bYcyXnEv0T.exe.log, ASCII 11->34 dropped 62 Adds a directory exclusion to Windows Defender 11->62 64 Tries to detect virtualization through RDTSC time measurements 11->64 66 Injects a PE file into a foreign processes 11->66 68 Switches to a custom stack to bypass stack traces 11->68 15 bYcyXnEv0T.exe 11->15         started        18 powershell.exe 23 11->18         started        signatures6 process7 signatures8 70 Modifies the context of a thread in another process (thread injection) 15->70 72 Maps a DLL or memory area into another process 15->72 74 Sample uses process hollowing technique 15->74 78 2 other signatures 15->78 20 explorer.exe 65 1 15->20 injected 76 Loading BitLocker PowerShell Module 18->76 23 WmiPrvSE.exe 18->23         started        25 conhost.exe 18->25         started        process9 dnsIp10 42 204.79.197.203, 443 MICROSOFT-CORP-MSN-AS-BLOCKUS United States 20->42 27 svchost.exe 20->27         started        process11 signatures12 54 Modifies the context of a thread in another process (thread injection) 27->54 56 Maps a DLL or memory area into another process 27->56 58 Tries to detect virtualization through RDTSC time measurements 27->58 60 Switches to a custom stack to bypass stack traces 27->60 30 cmd.exe 1 27->30         started        process13 process14 32 conhost.exe 30->32         started       
Score:
99%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/ba331599bb06083aa97ac39010b2d6b5c1078ed519b5ed4dcab97276c84ecedb
Detection:
formbook
Create hunting rule
Link:
https://mwdb.cert.pl/sample/ba331599bb06083aa97ac39010b2d6b5c1078ed519b5ed4dcab97276c84ecedb/
Threat name:
ByteCode-MSIL.Backdoor.FormBook
Create hunting rule
Status:
Malicious
First seen:
2025-02-27 13:54:30 UTC
AV detection:
19 of 24 (79.17%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=xizrlgn3ayedvkl2yoibbmwwwxaqpdwvdg262tokxfzhnscoz3nq._file
Result
Malware family:
formbook
Create hunting rule
Score:
  10/10
Tags:
family:formbook campaign:k49s discovery execution rat spyware stealer trojan
Link:
https://tria.ge/reports/250310-phd1rst1av/
Behaviour
Checks processor information in registry
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/3acbb685-fce1-4a8e-b087-ffb39b2e39f0
Unpacked files
SH256 hash:
ba331599bb06083aa97ac39010b2d6b5c1078ed519b5ed4dcab97276c84ecedb
MD5 hash:
19585354cf3c0ce57654dbf653cdfa46
SHA1 hash:
ac4e7fac40595cddd6d6f2b6ad788b55c495ae54
Link:
https://www.unpac.me/results/b091800b-1a66-4a4e-b7dc-e2294a97d47a/
SH256 hash:
4020cd9f017ae7fdff9e7e9d134039ddf767accecb5f75d4ec129b831bf9fe11
MD5 hash:
6ba807815ebfd71477a410f8fa85532b
SHA1 hash:
c077ca1fc4b626fd408113fab8eabbf9509db08d
Link:
https://www.unpac.me/results/b091800b-1a66-4a4e-b7dc-e2294a97d47a/
SH256 hash:
6c7ef6ae550a4b6231f64be107a2dee0f1cbf560469f4641c339e9deaa0b26c2
MD5 hash:
b87f0890400b3062009aede474ba7d10
SHA1 hash:
e55417b6e499843492335f07a25ac73776d2b440
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/b091800b-1a66-4a4e-b7dc-e2294a97d47a/
SH256 hash:
83444a43ba472442e2b0fa4d01a2cb7a556ec37f4cd1ba63d17f0ed2809a31a0
MD5 hash:
3cc82489a99c6d951eab4626dc9dd5ba
SHA1 hash:
bb13c4f857a49e23ce51878b6f00778452a2e98e
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/b091800b-1a66-4a4e-b7dc-e2294a97d47a/
Parent samples :
bcc41988bc560c5ddf3e58165cc25daec67e3a33529b2179868f1b4b7746db7a
36ac663aee997b4b8da3bd498abcbdb91ca180f7afe402ce8ab166099c098cbf
792bdecda049100bcddb388c74b9fa5aa21d30a167786f1e5a99091a6e77c430
f30ccd8d6bd65a6c172e6233220523d984516e145b06d986bc6c0736e53dfde8
ba331599bb06083aa97ac39010b2d6b5c1078ed519b5ed4dcab97276c84ecedb
f0b540b1edbd94b9a7b330505529477cbbf6742ad78008979661d30b8f54731a
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/ba331599bb06083aa97ac39010b2d6b5c1078ed519b5ed4dcab97276c84ecedb

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: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.

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