MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 6b231872432c77ed4ac921fe6f93783c9c67f2c6f6b7931aeab6e02041a628af. 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 10 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 6b231872432c77ed4ac921fe6f93783c9c67f2c6f6b7931aeab6e02041a628af
SHA3-384 hash: 6e68606cd515759136af7e191a6c42f4125bc275ef21981e194463dbf4073fe5d2619e8ede3b9ca62367aa97f13c2563
SHA1 hash: 27686d078fff147004cf78e0afb9bbc9d03919f6
MD5 hash: 09ea426632c977738b40105320a9fc7b
humanhash: sweet-two-april-yankee
File name:6b231872432c77ed4ac921fe6f93783c9c67f2c6f6b7931aeab6e02041a628af
Download: download sample
Signature Formbook
Create hunting rule
File size:796'168 bytes
First seen:2025-04-08 08:21:35 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'652 x AgentTesla, 19'463 x Formbook, 12'204 x SnakeKeylogger)
ssdeep 12288:MmwtbGvpaQC8XQgwV1bioslm9bx4nVdoLPCRd160QbqjuYjJfC4FTnmmhqStTNkR:OGvpanoQtVsosuxaS8dgnGv5nhe
TLSH T15C05235E7B25E715CF295F3BD9A3510A9160E31BF866E6A414EC4CB15CF8B08824EC8F
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 14f0ccced6cce971 (11 x SnakeKeylogger, 9 x Formbook, 5 x MassLogger)
Reporter adrian__luca
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
1
# of downloads :
328
Origin country :
HU HU
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
6b231872432c77ed4ac921fe6f93783c9c67f2c6f6b7931aeab6e02041a628af
Verdict:
Malicious activity
Analysis date:
2025-04-08 11:44:34 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/1530093f-ba0b-46fe-95e8-2e22f212282d

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Verdict:
Malicious
Score:
99.9%
Link:
https://cyber-fortress.com/docs/result/index.php?id=67f4de43e011fe619fad1fc6
Tags:
micro spawn 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
Unauthorized injection to a recently created process
Restart of the analyzed sample
Creating a file
Launching the default Windows debugger (dwwin.exe)
Adding an exclusion to Microsoft Defender
Enabling autorun by creating a file
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
expired-cert invalid-signature obfuscated obfuscated packed packed packer_detected signed
Link:
https://www.filescan.io/uploads/67f4dcc32d430c849e0c788c/reports/1ddb0afa-ddee-4224-a2e4-783cc4c8df12/overview
Verdict:
Malicious
Labled as:
Genie.8DN.Generic
Link:
https://www.hybrid-analysis.com/sample/6b231872432c77ed4ac921fe6f93783c9c67f2c6f6b7931aeab6e02041a628af
Malware family:
Agent Tesla
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/ddd7109f-35ae-49a5-bb58-694ddd295b71
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1659809
Signature
.NET source code contains potential unpacker
.NET source code contains very large array initializations
Adds a directory exclusion to Windows Defender
Antivirus / Scanner detection for submitted sample
Antivirus detection for dropped file
Antivirus detection for URL or domain
Found direct / indirect Syscall (likely to bypass EDR)
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 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)
Sigma detected: Powershell Base64 Encoded MpPreference Cmdlet
Sigma detected: Scheduled temp file as task from temp location
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 schtasks.exe or at.exe to add and modify task schedules
Yara detected AntiVM3
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1659809 Sample: U8jvnkB2xc.exe Startdate: 08/04/2025 Architecture: WINDOWS Score: 100 68 www.tabyscooterrentals.xyz 2->68 70 www.lugao.xyz 2->70 72 16 other IPs or domains 2->72 90 Suricata IDS alerts for network traffic 2->90 92 Antivirus detection for URL or domain 2->92 94 Antivirus / Scanner detection for submitted sample 2->94 98 8 other signatures 2->98 10 U8jvnkB2xc.exe 7 2->10         started        14 YTeoxKmUWhI.exe 5 2->14         started        16 svchost.exe 1 1 2->16         started        signatures3 96 Performs DNS queries to domains with low reputation 70->96 process4 dnsIp5 58 C:\Users\user\AppData\...\YTeoxKmUWhI.exe, PE32 10->58 dropped 60 C:\Users\...\YTeoxKmUWhI.exe:Zone.Identifier, ASCII 10->60 dropped 62 C:\Users\user\AppData\Local\...\tmp6FB8.tmp, XML 10->62 dropped 64 C:\Users\user\AppData\...\U8jvnkB2xc.exe.log, ASCII 10->64 dropped 106 Uses schtasks.exe or at.exe to add and modify task schedules 10->106 108 Adds a directory exclusion to Windows Defender 10->108 110 Injects a PE file into a foreign processes 10->110 19 U8jvnkB2xc.exe 10->19         started        22 powershell.exe 23 10->22         started        24 powershell.exe 23 10->24         started        32 2 other processes 10->32 112 Antivirus detection for dropped file 14->112 114 Multi AV Scanner detection for dropped file 14->114 26 schtasks.exe 14->26         started        28 MpCmdRun.exe 14->28         started        30 YTeoxKmUWhI.exe 14->30         started        66 127.0.0.1 unknown unknown 16->66 file6 signatures7 process8 signatures9 100 Maps a DLL or memory area into another process 19->100 34 P0qLS1P1sumxN9.exe 19->34 injected 102 Loading BitLocker PowerShell Module 22->102 37 conhost.exe 22->37         started        39 WmiPrvSE.exe 22->39         started        41 conhost.exe 24->41         started        43 conhost.exe 26->43         started        45 conhost.exe 28->45         started        47 conhost.exe 32->47         started        process10 signatures11 88 Found direct / indirect Syscall (likely to bypass EDR) 34->88 49 SndVol.exe 34->49         started        process12 signatures13 80 Tries to steal Mail credentials (via file / registry access) 49->80 82 Tries to harvest and steal browser information (history, passwords, etc) 49->82 84 Modifies the context of a thread in another process (thread injection) 49->84 86 3 other signatures 49->86 52 P0qLS1P1sumxN9.exe 49->52 injected 56 firefox.exe 49->56         started        process14 dnsIp15 74 www.visionhi.site 209.74.64.189, 49747, 49748, 49749 MULTIBAND-NEWHOPEUS United States 52->74 76 champs-cloud.systems 3.33.130.190, 49731, 49732, 49733 AMAZONEXPANSIONGB United States 52->76 78 5 other IPs or domains 52->78 104 Found direct / indirect Syscall (likely to bypass EDR) 52->104 signatures16
Score:
98%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/6b231872432c77ed4ac921fe6f93783c9c67f2c6f6b7931aeab6e02041a628af
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/6b231872432c77ed4ac921fe6f93783c9c67f2c6f6b7931aeab6e02041a628af/
Threat name:
Win32.Trojan.Leonem
Create hunting rule
Status:
Malicious
First seen:
2025-03-25 03:58:46 UTC
File Type:
PE (.Net Exe)
Extracted files:
1
AV detection:
22 of 24 (91.67%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=nmrrq4sdfr362swjeh7g7e3yhsogp4wg623zggxkw3qcaqngfcxq._file
Verdict:
malicious
Label(s):
unc_loader_037
Create hunting rule
formbook
Create hunting rule
Similar samples:
error
Formbook
Result
Malware family:
n/a
Score:
  8/10
Tags:
discovery execution
Link:
https://tria.ge/reports/250408-j9t86s1zdw/
Behaviour
Scheduled Task/Job: Scheduled Task
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Program crash
System Location Discovery: System Language Discovery
Suspicious use of SetThreadContext
Checks computer location settings
Command and Scripting Interpreter: PowerShell
Verdict:
Malicious
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/7031955a-b126-4f71-ae4d-e90e115edfa5
Unpacked files
SH256 hash:
6b231872432c77ed4ac921fe6f93783c9c67f2c6f6b7931aeab6e02041a628af
MD5 hash:
09ea426632c977738b40105320a9fc7b
SHA1 hash:
27686d078fff147004cf78e0afb9bbc9d03919f6
Link:
https://www.unpac.me/results/106221e6-7ba2-49e6-bb99-f186bbdfd07c/
SH256 hash:
479b2b88236dc456b9c9dfcff8ee9e70c80d12c0f7b02b3090a9fe55f772b689
MD5 hash:
e3f6e491829c48e1ba0709f786109cef
SHA1 hash:
3e300dbb2a18a38cfcfdcdc2a71b47fada2b73a2
Link:
https://www.unpac.me/results/106221e6-7ba2-49e6-bb99-f186bbdfd07c/
SH256 hash:
4d4a347fc7edd79e0e55ee0d4892b606b624d6e5bcc5e9238e7bdc10deeee37e
MD5 hash:
657c8df141633cf1b4b701dd590d8273
SHA1 hash:
7a24abfc0ed2a1bddfde3e6687da6f1a452d2c4d
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/106221e6-7ba2-49e6-bb99-f186bbdfd07c/
SH256 hash:
c444165947b83246bac134ea3272ee89130b2f2e373c7577b6bd20bb206426aa
MD5 hash:
2c7d23998738b7d8e81231428666c885
SHA1 hash:
bf6e690105cb536908f751c89b0ed5fb4a0bb67a
Link:
https://www.unpac.me/results/106221e6-7ba2-49e6-bb99-f186bbdfd07c/
SH256 hash:
a237112b3b2e4a0750e8526b1317664eb253bb966ee5938bd34014c46730f44a
MD5 hash:
444d6481d6dbecb93960a642ef1c90cf
SHA1 hash:
e26314ef7b51a9837b16082c32fc8ab704ab0b59
Link:
https://www.unpac.me/results/106221e6-7ba2-49e6-bb99-f186bbdfd07c/
Malware family:
FormBook
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/6b231872432c/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/6b231872432c77ed4ac921fe6f93783c9c67f2c6f6b7931aeab6e02041a628af

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:INDICATOR_KB_CERT_7c1118cbbadc95da3752c46e47a27438
Create hunting rule
Author:ditekSHen
Description:Detects executables signed with stolen, revoked or invalid certificates
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:shellcode
Create hunting rule
Author:nex
Description:Matched shellcode byte patterns
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 (HIGH_ENTROPY_VA)high

Comments