MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 6d0a73c255453a2539a63dbeae565abae36b527cd6154691b3c066f3815860ed. 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 20 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 6d0a73c255453a2539a63dbeae565abae36b527cd6154691b3c066f3815860ed
SHA3-384 hash: f9d96506b6135ecd958c7d0562bf3c1169527c12c4b081de77c71cb775319e756b6e1abe209375393174543daec0c3a5
SHA1 hash: 5fb018743a74f72adceb85a27d8f1198482ccdc4
MD5 hash: dfc7843f6e716725410adffe8c15848f
humanhash: tango-alpha-potato-potato
File name:B1C90tuveZ9jFGZ.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:625'160 bytes
First seen:2025-04-17 09:56:31 UTC
Last seen:2025-04-19 14:10:29 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'659 x AgentTesla, 19'469 x Formbook, 12'208 x SnakeKeylogger)
ssdeep 12288:ER7gCRxFNGgFoQOCkRfPehxgoNX356+Vz91fR/BHUhr5woJ+sFOJkR:ERfhoQOCzhv56ozHR/ZGr5woYsx
Threatray 4'949 similar samples on MalwareBazaar
TLSH T142D412952219EF03C9A10FB00EA2D2B557346EDE9856C30BADDABCEF79B5F552480343
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 :
6
# of downloads :
581
Origin country :
CH CH
Vendor Threat Intelligence
Detection:
Formbook
Create hunting rule
Link:
https://www.capesandbox.com/analysis/2685/
Detection(s):
SecuriteInfo.com.Win32.MalwareX-gen.12641.4058.UNOFFICIAL
Create hunting rule

Verdict:
Malicious
Score:
96.5%
Link:
https://cyber-fortress.com/docs/result/index.php?id=6800d451280f5f89a0d056b6
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
Forced shutdown of a system process
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 explorer invalid-signature lolbin obfuscated packed packed packer_detected signed vbnet
Link:
https://www.filescan.io/uploads/6800d08590767142c3d8d164/reports/fe6f7759-46af-4745-9018-355bdf2d900e/overview
Verdict:
Malicious
Labled as:
Win/malicious_confidence_100%
Link:
https://www.hybrid-analysis.com/sample/6d0a73c255453a2539a63dbeae565abae36b527cd6154691b3c066f3815860ed
Malware family:
Formbook
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/3c6eb533-b4d2-46c1-9320-170b22da118c
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1667358
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)
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
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
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: 1667358 Sample: B1C90tuveZ9jFGZ.exe Startdate: 17/04/2025 Architecture: WINDOWS Score: 100 61 www.iralavinc.online 2->61 63 www.iaolento12.sbs 2->63 65 2 other IPs or domains 2->65 77 Found malware configuration 2->77 79 Malicious sample detected (through community Yara rule) 2->79 81 Antivirus detection for URL or domain 2->81 83 9 other signatures 2->83 11 B1C90tuveZ9jFGZ.exe 7 2->11         started        15 tKmAtmGcqvi.exe 5 2->15         started        signatures3 process4 file5 53 C:\Users\user\AppData\...\tKmAtmGcqvi.exe, PE32 11->53 dropped 55 C:\Users\...\tKmAtmGcqvi.exe:Zone.Identifier, ASCII 11->55 dropped 57 C:\Users\user\AppData\Local\...\tmpF17F.tmp, XML 11->57 dropped 59 C:\Users\user\...\B1C90tuveZ9jFGZ.exe.log, ASCII 11->59 dropped 93 Uses schtasks.exe or at.exe to add and modify task schedules 11->93 95 Writes to foreign memory regions 11->95 97 Allocates memory in foreign processes 11->97 99 Adds a directory exclusion to Windows Defender 11->99 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        101 Multi AV Scanner detection for dropped file 15->101 103 Injects a PE file into a foreign processes 15->103 26 vbc.exe 15->26         started        28 schtasks.exe 15->28         started        signatures6 process7 signatures8 67 Modifies the context of a thread in another process (thread injection) 17->67 69 Maps a DLL or memory area into another process 17->69 71 Sample uses process hollowing technique 17->71 75 3 other signatures 17->75 30 explorer.exe 35 1 17->30 injected 73 Loading BitLocker PowerShell Module 20->73 32 WmiPrvSE.exe 20->32         started        34 conhost.exe 20->34         started        36 conhost.exe 22->36         started        38 conhost.exe 24->38         started        40 conhost.exe 28->40         started        process9 process10 42 chkdsk.exe 30->42         started        45 WWAHost.exe 30->45         started        47 autochk.exe 30->47         started        signatures11 85 Modifies the context of a thread in another process (thread injection) 42->85 87 Maps a DLL or memory area into another process 42->87 89 Tries to detect virtualization through RDTSC time measurements 42->89 91 Switches to a custom stack to bypass stack traces 42->91 49 cmd.exe 42->49         started        process12 process13 51 conhost.exe 49->51         started       
Score:
95%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/6d0a73c255453a2539a63dbeae565abae36b527cd6154691b3c066f3815860ed
Detection:
formbook
Create hunting rule
Link:
https://mwdb.cert.pl/sample/6d0a73c255453a2539a63dbeae565abae36b527cd6154691b3c066f3815860ed/
Threat name:
Win32.Trojan.Swotter
Create hunting rule
Status:
Malicious
First seen:
2025-04-17 07:20:10 UTC
File Type:
PE (.Net Exe)
Extracted files:
8
AV detection:
21 of 24 (87.50%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=nufhhqsviu5ckonghw7k4vs2xlrwwut42ykunentybtphakymdwq._file
Verdict:
malicious
Label(s):
unc_loader_037
Create hunting rule
formbook
Create hunting rule
Similar samples:
59c68aa4d3b5e77347aa69a31f2592220359ff8f45c18bf9ef5ad047e072534d
Formbook
5cc4e78268ea872c52ba12d08a527a7da6a0abd65d7b1aaabc2d56ae4edbdef6
Formbook
6036a28c74493ce0e6d87a468959a047011d2e6cf63807d9a3d154b8642d7e65
Formbook
6d0a73c255453a2539a63dbeae565abae36b527cd6154691b3c066f3815860ed
Formbook
a90bca8c1f6a63cc34a896eb3883428fab6fb6b4aca385ac917fdafcdbf9e774
Formbook
error
Formbook
+ 4'939 additional samples on MalwareBazaar
Result
Malware family:
formbook
Create hunting rule
Score:
  10/10
Tags:
family:formbook campaign:hi13 discovery execution rat spyware stealer trojan
Link:
https://tria.ge/reports/250417-ly4dtavry2/
Behaviour
Scheduled Task/Job: Scheduled Task
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
Suspicious behavior: MapViewOfSection
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
Uses the VBS compiler for execution
Command and Scripting Interpreter: PowerShell
Formbook payload
Formbook
Formbook family
Verdict:
Malicious
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/e0886bd9-abc5-4867-91a4-f928bb048a72
Unpacked files
SH256 hash:
6d0a73c255453a2539a63dbeae565abae36b527cd6154691b3c066f3815860ed
MD5 hash:
dfc7843f6e716725410adffe8c15848f
SHA1 hash:
5fb018743a74f72adceb85a27d8f1198482ccdc4
Link:
https://www.unpac.me/results/bef281c7-1fd8-43e0-a4e4-8e011f1f15d5/
SH256 hash:
4f7b50563df7cabbc175ebf7afcc6c4ac8124ae9f343e148e8025d39cccdeb01
MD5 hash:
ce5613d90caf3c163437123e0ee9e6fa
SHA1 hash:
37e9259a43e9a4d878775765a70f745aacb2ba85
Link:
https://www.unpac.me/results/bef281c7-1fd8-43e0-a4e4-8e011f1f15d5/
SH256 hash:
7ecb03ff57b70b5659a9cb34312f6a0c3be97ca69591b7a4f769ee4d8a75a283
MD5 hash:
e56f44f987d3d0b41d2b015f3aa69363
SHA1 hash:
b0f2e508ef2a22c1596d816e53fd1b10f104a689
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/bef281c7-1fd8-43e0-a4e4-8e011f1f15d5/
SH256 hash:
f7b2a1307788383e625f5e97e8b6493d83d3d5dc92e6668b4021089c31f95b60
MD5 hash:
01dee027b928c11106c8eedee12872e5
SHA1 hash:
9688743d5cb6c7d6bf8bc89b32c8336f3f12293d
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/bef281c7-1fd8-43e0-a4e4-8e011f1f15d5/
Parent samples :
c90b2d72296b49c72b221773c6fcc65648e0f0aa7ffc62611681c9cd07e6bf32
59c68aa4d3b5e77347aa69a31f2592220359ff8f45c18bf9ef5ad047e072534d
d22f35b2e413df2285d73d888f9ec91025121fff5fe29c98982e9952c2f3b730
5cc4e78268ea872c52ba12d08a527a7da6a0abd65d7b1aaabc2d56ae4edbdef6
3489a2eab1c57d0eee2ce6e5773e1f4f53ee6e5d8963e0099efc7e190d0c2f1c
6036a28c74493ce0e6d87a468959a047011d2e6cf63807d9a3d154b8642d7e65
6d0a73c255453a2539a63dbeae565abae36b527cd6154691b3c066f3815860ed
9948ae75550edf04cbad0aa67a427908d5f5dd86bae12998ff9e4debfc28a645
896dacfb811fcde80b97bb497aa5abc2dc3bcdedae8c0791512b208aea6b65bf
4ef55b210c4174c2efecbe5ca507305f44226fb26340ff93e36fb65c72b3e181
15b1dd61220782f0fd48d6ca10e0a556e036f2ce0450e443ee33a57fb6dd4ba9
b4f779c06421b878976598d11fe86b9cf3b92a04d93c9ce11b57772876ccc2ba
d6ff37cf17f73dc09e1bb459d7ebec5bfe3ca0acac5924ebeb15c01e1d5985eb
bc407aec3c1515d5cf405c36da5d2336361e57dc07afba016a5a6379b56892fa
2caded000f82486caade3eeb6c47d446037abdcb39a2ba127b58c9fc67d15f33
035cf98a4ed96281ec028ec33c8a15c578e3157f9a1f8e90e95ddbc6204ada29
b75676a458b2251a7e86d7aa12dd1d26f55d49d60af2c4fc534274a8fc170501
0013e6d899c343df37d42e9aea6a40a035021195b544f6c442ff98094501b5a0
024537bcb5cb2e33a164a13fa87e13dfc129efe2dd656084f3954f4ba5a821e1
80c1a0b48688c83d7c1532da5d5871618838eea438a4262a0c36ff21d5914c2f
88edce54585b6fd0c886090c53e8f8db451fe67eb1bbafbeac17fcbd694392e8
83cdcf1f7b8b580c62b4bc74e0ec2eb1fb18e2229335179d4f333c6b5f52f4ae
0578eeb29bd6418a75a34d5809cc64bcf903cab949060ad38cb2224d23bec10c
68f21baa9f00e498b8b31630e46addb81a4b4ef3f86d097708b6d6540fdcc8ac
5f63d86d5175fe1b15194dedb48e5eadb0ae1f4656b3ca86a2055df558bdcafc
078cd1b6995a95e2057591899a7050da5799ad226afefd75fd442060efd1b027
83720bec38d91097735649d6c29d406f7c1d7521f67e69cafce0437743cf3ebb
396d863b28cfe0297b99865faa37c6a7079547e0c275bbed4c4c0ce7451af4d3
285bd22ba49a3de603e9fff856a0bd3111e43629ad29e24bb41178afd93ece23
Malware family:
FormBook
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/6d0a73c25545/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.

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:Check_OutputDebugStringA_iat
Create hunting rule
Rule name:DebuggerCheck__GlobalFlags
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:DebuggerCheck__QueryInfo
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:DebuggerException__SetConsoleCtrl
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:golang_bin_JCorn_CSC846
Create hunting rule
Author:Justin Cornwell
Description:CSC-846 Golang detection ruleset
Rule name:INDICATOR_KB_CERT_7c1118cbbadc95da3752c46e47a27438
Create hunting rule
Author:ditekSHen
Description:Detects executables signed with stolen, revoked or invalid certificates
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: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: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: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

7z 17d1f9551ceb2dca9e0e2d3e494d35a5d010c3c491728719bcdf9c514a6db785

Formbook

Executable exe 6d0a73c255453a2539a63dbeae565abae36b527cd6154691b3c066f3815860ed

(this sample)

  
Delivery method
Other
  
Dropped by
SHA256 17d1f9551ceb2dca9e0e2d3e494d35a5d010c3c491728719bcdf9c514a6db785
Cape
Cape
https://www.capesandbox.com/analysis/2685/
  
Dropped by
MD5 6063f11d14883ba895d09f19385723e4

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