MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 f5c1310cde2a72e5962fb57726082052a23777e395154a0c6274430268321cc2. 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: 20


Intelligence 20 IOCs YARA 15 File information Comments
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SHA256 hash: f5c1310cde2a72e5962fb57726082052a23777e395154a0c6274430268321cc2
SHA3-384 hash: e9033252fd3d6935e5c2839460acd31b69822e0ed9ff9f84e77bdb7f6d8077fec5934f72f6194f36f3fcb4a6a7e29b8a
SHA1 hash: e7fa2bf7f7938411d77605ee925791286dddf47f
MD5 hash: 2024f01e9ecf11328b3862491d2388e4
humanhash: jig-coffee-sink-stairway
File name:f5c1310cde2a72e5962fb57726082052a23777e395154a0c6274430268321cc2
Download: download sample
Signature Formbook
Create hunting rule
File size:702'464 bytes
First seen:2025-03-10 11:35:45 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'652 x AgentTesla, 19'462 x Formbook, 12'204 x SnakeKeylogger)
ssdeep 12288:eMr8IGsdYeXY/e1hvycxHdr9IEyWxO+BQdfX1qHjR5P4fkuU4m0ZcL4e83e75iT:eMrb/RycD9IxQ9BsflqVCfkl4WZ8EiT
Threatray 4'994 similar samples on MalwareBazaar
TLSH T125E4F2943229B801C9A997B502B1F5B817382EAE9401D31B9FD97DEF7CB6F414E09783
TrID 67.7% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
9.7% (.EXE) Win64 Executable (generic) (10522/11/4)
6.0% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
4.6% (.EXE) Win16 NE executable (generic) (5038/12/1)
4.1% (.EXE) Win32 Executable (generic) (4504/4/1)
Magika pebin
dhash icon 904cecf2c0ecfa7e (4 x Formbook, 1 x SnakeKeylogger, 1 x AgentTesla)
Reporter adrian__luca
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
1
# of downloads :
195
Origin country :
HU HU
Vendor Threat Intelligence
Malware family:
formbook
Create hunting rule
ID:
1
File name:
f5c1310cde2a72e5962fb57726082052a23777e395154a0c6274430268321cc2
Verdict:
Malicious activity
Analysis date:
2025-03-10 14:37:11 UTC
Tags:
formbook stealer xloader
Link:
https://app.any.run/tasks/c578eda7-f300-4455-8202-7a1b9add978a

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=67cee4da1f777fe30608a032
Tags:
dropper virus micro
Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Creating a window
Сreating synchronization primitives
Creating a file in the %AppData% directory
Enabling the 'hidden' option for recently created files
Adding an access-denied ACE
Creating a process with a hidden window
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:
obfuscated packed packed packer_detected reconnaissance vbnet
Link:
https://www.filescan.io/uploads/67ceceb6e95d0f9029e6c798/reports/5bd2387e-fe2e-4daa-a8e8-27927851f46b/overview
Verdict:
Malicious
Labled as:
Trojan.Generic
Link:
https://www.hybrid-analysis.com/sample/f5c1310cde2a72e5962fb57726082052a23777e395154a0c6274430268321cc2
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/0e21b48a-d4c4-4d3c-ab44-3fdd3350ce55
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1634799
Signature
.NET source code contains potential unpacker
Adds a directory exclusion to Windows Defender
Allocates memory in foreign processes
Antivirus / Scanner detection for submitted sample
Antivirus detection for dropped file
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Found direct / indirect Syscall (likely to bypass EDR)
Found malware configuration
Icon mismatch, binary includes an icon from a different legit application in order to fool users
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: Scheduled temp file as task from temp location
Suricata IDS alerts for network traffic
Switches to a custom stack to bypass stack traces
System process connects to network (likely due to code injection or exploit)
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: 1634799 Sample: J8bamK92a3.exe Startdate: 11/03/2025 Architecture: WINDOWS Score: 100 66 www.play-vanguard-nirvana.xyz 2->66 68 www.denotational.xyz 2->68 70 5 other IPs or domains 2->70 76 Suricata IDS alerts for network traffic 2->76 78 Found malware configuration 2->78 80 Malicious sample detected (through community Yara rule) 2->80 84 12 other signatures 2->84 11 J8bamK92a3.exe 7 2->11         started        15 JnKLdAUJztP.exe 5 2->15         started        17 svchost.exe 2->17         started        signatures3 82 Performs DNS queries to domains with low reputation 68->82 process4 dnsIp5 56 C:\Users\user\AppData\...\JnKLdAUJztP.exe, PE32 11->56 dropped 58 C:\Users\...\JnKLdAUJztP.exe:Zone.Identifier, ASCII 11->58 dropped 60 C:\Users\user\AppData\Local\...\tmp58A8.tmp, XML 11->60 dropped 62 C:\Users\user\AppData\...\J8bamK92a3.exe.log, ASCII 11->62 dropped 102 Uses schtasks.exe or at.exe to add and modify task schedules 11->102 104 Writes to foreign memory regions 11->104 106 Allocates memory in foreign processes 11->106 108 Adds a directory exclusion to Windows Defender 11->108 20 RegSvcs.exe 11->20         started        23 powershell.exe 23 11->23         started        25 RegSvcs.exe 11->25         started        27 schtasks.exe 1 11->27         started        110 Antivirus detection for dropped file 15->110 112 Multi AV Scanner detection for dropped file 15->112 114 Injects a PE file into a foreign processes 15->114 29 RegSvcs.exe 15->29         started        31 schtasks.exe 1 15->31         started        33 RegSvcs.exe 15->33         started        64 127.0.0.1 unknown unknown 17->64 file6 signatures7 process8 signatures9 86 Modifies the context of a thread in another process (thread injection) 20->86 88 Maps a DLL or memory area into another process 20->88 90 Sample uses process hollowing technique 20->90 92 Queues an APC in another process (thread injection) 20->92 35 explorer.exe 32 1 20->35 injected 94 Loading BitLocker PowerShell Module 23->94 39 WmiPrvSE.exe 23->39         started        41 conhost.exe 23->41         started        96 Tries to detect virtualization through RDTSC time measurements 25->96 43 conhost.exe 27->43         started        98 Found direct / indirect Syscall (likely to bypass EDR) 29->98 45 conhost.exe 31->45         started        process10 dnsIp11 72 www.play-vanguard-nirvana.xyz 104.21.16.1, 51602, 80 CLOUDFLARENETUS United States 35->72 74 204.79.197.203, 443 MICROSOFT-CORP-MSN-AS-BLOCKUS United States 35->74 100 System process connects to network (likely due to code injection or exploit) 35->100 47 raserver.exe 35->47         started        50 cmstp.exe 35->50         started        signatures12 process13 signatures14 116 Modifies the context of a thread in another process (thread injection) 47->116 118 Maps a DLL or memory area into another process 47->118 120 Tries to detect virtualization through RDTSC time measurements 47->120 122 Switches to a custom stack to bypass stack traces 47->122 52 cmd.exe 47->52         started        process15 process16 54 conhost.exe 52->54         started       
Score:
99%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/f5c1310cde2a72e5962fb57726082052a23777e395154a0c6274430268321cc2
Detection:
formbook
Create hunting rule
Link:
https://mwdb.cert.pl/sample/f5c1310cde2a72e5962fb57726082052a23777e395154a0c6274430268321cc2/
Threat name:
Win32.Packed.Generic
Create hunting rule
Status:
Suspicious
First seen:
2025-02-24 09:04:55 UTC
File Type:
PE (.Net Exe)
Extracted files:
17
AV detection:
30 of 38 (78.95%)
Threat level:
  1/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=6xatcdg6fjzolfrpwv3smcbakkrdo57dsukuuddcorbqe2bsdtba._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
unc_loader_037
Create hunting rule
Similar samples:
6d5aba91499c078d24d86e443d84dd17530fa6ff8535b4d866d26a8578a2ddca
Formbook
7df9ceec9c6ece56d60b5264804b0c9360c4f87bc595d9987c5d87990511ba34
Formbook
8e000211c865431b51b1e3733e0bc6d7efcfb8a3d45631cb10f0d7813b0b2e59
Formbook
b1d422db723db6c2f7293a2c09397b46677407aaea878d24c63b0911edd0c6d0
Formbook
c61c8d43eccf83eec74d4bb03b0856a5916d00a486f1d4b46bf7e17295d246b5
Formbook
cb122b2022fcde8c2f1704ac186a0add17028456d867be7fed22e4244bca4a64
Formbook
error
Formbook
+ 4'984 additional samples on MalwareBazaar
Result
Malware family:
formbook
Create hunting rule
Score:
  10/10
Tags:
family:formbook campaign:egs9 discovery execution rat spyware stealer trojan
Link:
https://tria.ge/reports/250310-nqpa2asrw2/
Behaviour
Enumerates system info in registry
Modifies registry class
Scheduled Task/Job: Scheduled Task
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of FindShellTrayWindow
Suspicious use of SendNotifyMessage
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/da76438d-cf9f-410a-b0c6-81669af86551
Unpacked files
SH256 hash:
e80a463e16b14b43e4112cb8f0cb0cf44ff245be592202042373a02b9ea4deb9
MD5 hash:
bbea1aafd0d7058f6f46c8ceff355f96
SHA1 hash:
14ca07073c0a943129823d6532358a55761a203f
Link:
https://www.unpac.me/results/19b71473-5cdb-48e2-b987-5274d7838a88/
SH256 hash:
7f940fc8229c572d9e9fa809bb403dcfc8700bccaa462fe176af49ba2f789126
MD5 hash:
91de3b8271f023ad03b6514d5e32e33a
SHA1 hash:
bbb9a8e1a987fb153806c6bdb1b49683826cffde
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/19b71473-5cdb-48e2-b987-5274d7838a88/
SH256 hash:
df63e7674512b9e60f662375faf0097b3e5846b509aaeb3b9f11e4cea897bb37
MD5 hash:
21bfc8f9db10167810af0b7270b1872e
SHA1 hash:
e9b9f6a1d1fa30bf02692b2ae2a948fa64b476b8
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/19b71473-5cdb-48e2-b987-5274d7838a88/
Parent samples :
683e3979cc09db086095cbe840901b82951df941ed461f89a67b98bd0ffe5ff9
f5c1310cde2a72e5962fb57726082052a23777e395154a0c6274430268321cc2
19ea0308aed3ec79d5c2ff91ed48886e564d5aa37ce5d1bfec0e1ba959c42203
ef4948765f8caae1f84b2199e785842e19e49c39630422c12a603c93d3e6b4b4
SH256 hash:
f5c1310cde2a72e5962fb57726082052a23777e395154a0c6274430268321cc2
MD5 hash:
2024f01e9ecf11328b3862491d2388e4
SHA1 hash:
e7fa2bf7f7938411d77605ee925791286dddf47f
Link:
https://www.unpac.me/results/19b71473-5cdb-48e2-b987-5274d7838a88/
Malware family:
FormBook
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/f5c1310cde2a/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/f5c1310cde2a72e5962fb57726082052a23777e395154a0c6274430268321cc2

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: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: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: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_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.

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