MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 6654e909452d713f3f51aa800e0633bbc63e859bb3f63f5c833273e516f1c3d3. 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: 18


Intelligence 18 IOCs YARA 5 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 6654e909452d713f3f51aa800e0633bbc63e859bb3f63f5c833273e516f1c3d3
SHA3-384 hash: 9bc987cf07da28b7928cf86806c9fdc2011612b308ca23e17b64360166692e11076f43b39973f3c4a1da771a15e78a7c
SHA1 hash: 6e0e5ebe3bb462646ec1a5899c85e3318e5b1bac
MD5 hash: e866fd7dc0e7fee2e8f0432f7ae69df5
humanhash: white-shade-saturn-spaghetti
File name:u8IGK20iKZ9Iv7o.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:621'056 bytes
First seen:2025-03-11 09:52:29 UTC
Last seen:2025-03-11 13:05:42 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'650 x AgentTesla, 19'462 x Formbook, 12'203 x SnakeKeylogger)
ssdeep 12288:Buc154EwtYwW6WdZh2aCZMvfro35YKUjC781Yi7JICDbiP2xjs4O:Buu8HW662akMnroJvUjCGDbw2x7O
Threatray 2'513 similar samples on MalwareBazaar
TLSH T125D4025466ADEF66E8B86BF10931D33243B92F6EE831E3498DE8ACDB34247503415793
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 cocaman
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
3
# of downloads :
504
Origin country :
CH CH
Vendor Threat Intelligence
Malware family:
formbook
Create hunting rule
ID:
1
File name:
31bd09cfc930f5d12ebdac916c2b354ed5af78d6a21b64069b953a11bc2939e5
Verdict:
Malicious activity
Analysis date:
2025-03-11 09:46:47 UTC
Tags:
arch-exec formbook stealer xloader
Link:
https://app.any.run/tasks/c89d2554-a275-47af-8ff5-92dca6624137

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Verdict:
Malicious
Score:
96.5%
Link:
https://cyber-fortress.com/docs/result/index.php?id=67d006864fd7d3fd0e082954
Tags:
virus shell 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
Verdict:
Malicious
Labled as:
Win/malicious_confidence_100%
Link:
https://www.hybrid-analysis.com/sample/6654e909452d713f3f51aa800e0633bbc63e859bb3f63f5c833273e516f1c3d3
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/b8277c54-180e-442c-8adb-7cc61bf28bd6
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1635085
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 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)
Modifies the prolog of user mode functions (user mode inline hooks)
Multi AV Scanner detection for dropped file
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
Sigma detected: Rundll32 Execution Without CommandLine Parameters
Sigma detected: Scheduled temp file as task from temp location
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: 1635085 Sample: u8IGK20iKZ9Iv7o.exe Startdate: 11/03/2025 Architecture: WINDOWS Score: 100 67 www.oneyiq.xyz 2->67 69 www.uyurbanaraava.shop 2->69 71 10 other IPs or domains 2->71 81 Found malware configuration 2->81 83 Malicious sample detected (through community Yara rule) 2->83 85 Antivirus detection for URL or domain 2->85 89 10 other signatures 2->89 11 u8IGK20iKZ9Iv7o.exe 7 2->11         started        15 FmJbKjLFI.exe 5 2->15         started        17 svchost.exe 2->17         started        signatures3 87 Performs DNS queries to domains with low reputation 67->87 process4 dnsIp5 57 C:\Users\user\AppData\Roaming\FmJbKjLFI.exe, PE32 11->57 dropped 59 C:\Users\...\FmJbKjLFI.exe:Zone.Identifier, ASCII 11->59 dropped 61 C:\Users\user\AppData\Local\...\tmp7C08.tmp, XML 11->61 dropped 63 C:\Users\user\...\u8IGK20iKZ9Iv7o.exe.log, ASCII 11->63 dropped 103 Uses schtasks.exe or at.exe to add and modify task schedules 11->103 105 Adds a directory exclusion to Windows Defender 11->105 20 RegSvcs.exe 11->20         started        23 powershell.exe 23 11->23         started        25 powershell.exe 23 11->25         started        27 schtasks.exe 1 11->27         started        107 Multi AV Scanner detection for dropped file 15->107 109 Writes to foreign memory regions 15->109 111 Allocates memory in foreign processes 15->111 113 Injects a PE file into a foreign processes 15->113 29 RegSvcs.exe 15->29         started        31 schtasks.exe 15->31         started        33 RegSvcs.exe 15->33         started        65 127.0.0.1 unknown unknown 17->65 file6 signatures7 process8 signatures9 91 Modifies the context of a thread in another process (thread injection) 20->91 93 Maps a DLL or memory area into another process 20->93 95 Sample uses process hollowing technique 20->95 101 2 other signatures 20->101 35 explorer.exe 78 1 20->35 injected 97 Loading BitLocker PowerShell Module 23->97 38 conhost.exe 23->38         started        40 WmiPrvSE.exe 23->40         started        42 conhost.exe 25->42         started        44 conhost.exe 27->44         started        99 Found direct / indirect Syscall (likely to bypass EDR) 29->99 46 conhost.exe 31->46         started        process10 dnsIp11 73 204.79.197.203, 443 MICROSOFT-CORP-MSN-AS-BLOCKUS United States 35->73 48 rundll32.exe 35->48         started        51 rundll32.exe 35->51         started        process12 signatures13 75 Modifies the context of a thread in another process (thread injection) 48->75 77 Maps a DLL or memory area into another process 48->77 53 cmd.exe 48->53         started        79 Tries to detect virtualization through RDTSC time measurements 51->79 process14 process15 55 conhost.exe 53->55         started       
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/6654e909452d713f3f51aa800e0633bbc63e859bb3f63f5c833273e516f1c3d3
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/6654e909452d713f3f51aa800e0633bbc63e859bb3f63f5c833273e516f1c3d3/
Threat name:
ByteCode-MSIL.Backdoor.FormBook
Create hunting rule
Status:
Malicious
First seen:
2025-03-11 07:58:58 UTC
File Type:
PE (.Net Exe)
Extracted files:
8
AV detection:
19 of 24 (79.17%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=mzkosckffvyt6p2rvkaa4brtxpdd5bm3wp3d6xedgjz6kfxrypjq._file
Verdict:
malicious
Label(s):
unc_loader_037
Create hunting rule
formbook
Create hunting rule
Similar samples:
3f616f7935f4c97239699196e64056b45be53e73d02a0b70e482c886e3a13965
Formbook
8d4982f32dffdff70405b3185f7a3e6ca96c596663576ca85c1f8dae9352e3b3
Formbook
94092b0d2ad0b680a32a7b276c4e0df036f982c03c29d50a8dda6a3f6e8fb4be
Formbook
9a24b197698ebde37702b2993ea2d1d4b7d2ad327605af58a4b8b266d7d9e827
Formbook
b603a586ea389d7ce6ea8b3ae24eb08bbe6c020e341ee32845c6edf868aa9bbd
Formbook
c7504e19276343cc24118b10ed938822f791425e06c4e1865101c5446eaea08d
Formbook
df5d6ebc3b4ec456ec22620759160aaed495836114a4b5abd38845439f67b46d
Formbook
error
Formbook
+ 2'503 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-lwtrlazxgx/
Behaviour
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/c32b47fd-15b8-47aa-b5b4-e9e7e648e203
Unpacked files
SH256 hash:
6654e909452d713f3f51aa800e0633bbc63e859bb3f63f5c833273e516f1c3d3
MD5 hash:
e866fd7dc0e7fee2e8f0432f7ae69df5
SHA1 hash:
6e0e5ebe3bb462646ec1a5899c85e3318e5b1bac
Link:
https://www.unpac.me/results/e99f375e-af7a-4220-ab32-2b8979db81a5/
SH256 hash:
de8c9e136cdee47f85a41376993c3384591a5444fe86b558d938f5126cd07c7e
MD5 hash:
b94f77c5ccefb69ea3f0e8473c253ee4
SHA1 hash:
1cec543b1679dfa17f70553dcc17d84b881b31ea
Detections:
INDICATOR_EXE_Packed_SmartAssembly
Create hunting rule
Link:
https://www.unpac.me/results/e99f375e-af7a-4220-ab32-2b8979db81a5/
Parent samples :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 hash:
b4184a5e5ce82b226e6a86d081739277461059f68ed0894e063e74f4afea01b7
MD5 hash:
5e07e1e52b3f0624d4a511f3f96934ce
SHA1 hash:
80aaa0a5db05af84aaf91dcc478d6dd56bdbab77
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/e99f375e-af7a-4220-ab32-2b8979db81a5/
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/e99f375e-af7a-4220-ab32-2b8979db81a5/
Parent samples :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 family:
FormBook
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/6654e909452d/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/6654e909452d713f3f51aa800e0633bbc63e859bb3f63f5c833273e516f1c3d3

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:AgentTesla_DIFF_Common_Strings_01
Create hunting rule
Author:schmidtsz
Description:Identify partial Agent Tesla strings
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.

Malspam

Formbook

zip 31bd09cfc930f5d12ebdac916c2b354ed5af78d6a21b64069b953a11bc2939e5

Formbook

Executable exe 6654e909452d713f3f51aa800e0633bbc63e859bb3f63f5c833273e516f1c3d3

(this sample)

  
Delivery method
Other
  
Dropped by
SHA256 31bd09cfc930f5d12ebdac916c2b354ed5af78d6a21b64069b953a11bc2939e5
  
Dropped by
MD5 2ddc652810b3d38856695d7178fabdcb

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