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MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 55c48c9c8523805a5c8e75d07bc671f9f72fd91eb3b77fbf9f413d292301e33f. 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 19 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 55c48c9c8523805a5c8e75d07bc671f9f72fd91eb3b77fbf9f413d292301e33f
SHA3-384 hash: 6c13eeb2d38b2d3925ea50996fee4bb100b1948a53cecfe15da9b4b488e00d7f9a1048d249a4a4525cf0dd204cb7ee2a
SHA1 hash: 2a9223917867e2db0dc07c4e069a3701d976948b
MD5 hash: 8a493a7f618326829f9fa7ac6f227669
humanhash: yellow-fanta-tennessee-don
File name:55c48c9c8523805a5c8e75d07bc671f9f72fd91eb3b77fbf9f413d292301e33f
Download: download sample
Signature Formbook
Create hunting rule
File size:1'023'488 bytes
First seen:2026-09-04 20:20:23 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (49'219 x AgentTesla, 20'418 x Formbook, 12'370 x SnakeKeylogger)
ssdeep 24576:V25smOZGlgE0/6+iAM4T2qan7/AbDDXZ6jssIA0FWKD6BL:K3O64O4Cb7/YDDJ6g3A0Qa6R
TLSH T1E7251268675ACE22E5FA4BB10976D33103B0FD8D9452D306EEFA9CCB3911F586C642D2
TrID 73.9% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
6.6% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
6.6% (.EXE) Win64 Executable (generic) (6522/11/2)
4.5% (.EXE) Win32 Executable (generic) (4504/4/1)
2.0% (.ICL) Windows Icons Library (generic) (2059/9)
Magika pebin
Reporter adrian__luca
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
1
# of downloads :
58
Origin country :
HU HU
Vendor Threat Intelligence
Malware configuration found for:
RoboSki
Details
Link:
https://research.acce.ciphertechsolutions.com/results/87532d8c-b949-49f7-be40-f22045e765e8/
Malware family:
formbook
Create hunting rule
ID:
1
File name:
exe
Verdict:
Malicious activity
Analysis date:
2026-09-04 22:27:32 UTC
Tags:
formbook xloader
Link:
https://app.any.run/tasks/71b6d599-75fd-43b9-b59f-4c1e8686688c

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
Formbook
Create hunting rule
Link:
https://www.capesandbox.com/analysis/83984/
Detection(s):
SecuriteInfo.com.Trojan.KillProc2.41233.13317718.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Unauthorized injection to a recently created process
Restart of the analyzed sample
Creating a file
Searching for synchronization primitives
Launching the default Windows debugger (dwwin.exe)
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
entropy formbook packed
Link:
https://www.filescan.io/uploads/6a9b2832fcf8ac3ee6d1d48c/reports/cc80bcd0-4ca4-408e-b35a-e7ec62c1c2c4/overview
Verdict:
Malicious
Labled as:
Win/malicious_confidence_100%
Link:
https://www.hybrid-analysis.com/sample/55c48c9c8523805a5c8e75d07bc671f9f72fd91eb3b77fbf9f413d292301e33f
Verdict:
Malicious
File Type:
exe x32
First seen:
2026-08-04T03:56:00Z UTC
Last seen:
2026-09-04T06:02:00Z UTC
Hits:
~1000
Link:
https://opentip.kaspersky.com/55c48c9c8523805a5c8e75d07bc671f9f72fd91eb3b77fbf9f413d292301e33f/results?tab=lookup
Malware family:
Formbook
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/b7fb4a40-8dfb-4697-87b5-2305e40e1d1e
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/55c48c9c8523805a5c8e75d07bc671f9f72fd91eb3b77fbf9f413d292301e33f
Verdict:
inconclusive
YARA:
5 match(es)
Tags:
.Net Executable Managed .NET PE (Portable Executable) PE File Layout SOS: 0.42 Win 32 Exe x86
Link:
https://app.malva.re/file/8a493a7f618326829f9fa7ac6f227669
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/55c48c9c8523805a5c8e75d07bc671f9f72fd91eb3b77fbf9f413d292301e33f/
Threat name:
ByteCode-MSIL.Trojan.SnakeKeyLogger
Create hunting rule
Status:
Malicious
First seen:
2026-08-04 08:32:00 UTC
File Type:
PE (.Net Exe)
Extracted files:
4
AV detection:
26 of 36 (72.22%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=kxcizhefeoafuxeooxihxrtr7h3s7wi6wo3x7p47ie6ssiyb4m7q._file
Verdict:
malicious
Label(s):
Formbook
Create hunting rule
Link:
https://reports.threatray.com/f41c429b-84f8-4865-ae24-b83e7f137882
Result
Malware family:
formbook
Create hunting rule
Score:
  10/10
Tags:
family:formbook discovery rat spyware stealer trojan
Link:
https://tria.ge/reports/260904-y4nlrszcmd/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of WriteProcessMemory
Program crash
System Location Discovery: System Language Discovery
SmartAssembly .NET packer
Suspicious use of SetThreadContext
Family: Formbook
Formbook payload
Unpacked files
SH256 hash:
55c48c9c8523805a5c8e75d07bc671f9f72fd91eb3b77fbf9f413d292301e33f
MD5 hash:
8a493a7f618326829f9fa7ac6f227669
SHA1 hash:
2a9223917867e2db0dc07c4e069a3701d976948b
Link:
https://www.unpac.me/results/29ad7e20-a951-4b98-87b5-3bee9ba2b8b1/
SH256 hash:
7672ecef65b42c747fb9fac99f2281637fb92bd4f7adb43b02198c4c2ad56e55
MD5 hash:
660c82e5362a9eac830ade229cf4790a
SHA1 hash:
2ed1d6d8abaf853f0de33451d592ee50ee071a73
Detections:
INDICATOR_EXE_Packed_SmartAssembly
Create hunting rule
Link:
https://www.unpac.me/results/29ad7e20-a951-4b98-87b5-3bee9ba2b8b1/
Parent samples :
40018b81b80a0154b5003791d3faf1c38fdf9ae66584c6a95c8aab56cd38ff1d
babf0d6686c3c6637fe17f6813ea8e2e412d33cdc46f940f2b577ce06a04ed05
c0306b05d5a21a029af472c01e5a5e94f4307502d6c0381df16f9476a84470bb
55c48c9c8523805a5c8e75d07bc671f9f72fd91eb3b77fbf9f413d292301e33f
64465cfaee2db20531657bee57f40cec0f6747cd7fdc3b5933bafd64c117ba0b
b9789fb531882aedf594a79f5d2a951709e9321d01b45de306484b050c0c3e4a
95b393d7cafa87c480b7e773dc39e7d43fc1c19e1145d1a37314c2b64c5fe19f
b96d64de358bb8476386b4bfb3efac7b2626d0216dcfe8fa67bcbd6db97fd523
1588649aee36e1ce61a00a6288263ba398f4cef6eef974f90f152f28a7a91228
832d09099184aac6f8ca7e1f897b882cd417f6d3382bd691bc27b10cf2cda6d9
71b2d5bdb0fc99eca3630bbb0ec5399bbedd2911b2f0e40a40dc388fa17f13fa
b242bab0944ea9371a40d6e803dc2685ad71d87f03341b3d57fd3e05c479a5c5
c90529f66cc40fb2235eb0f1a02b98f8b96b114f6024c0f08f8f06055cafa4f7
bcbeefa49a4b670385ba7d078bd2c90975117086c508ee8fd2b8cc9340c22f12
2aa18980d797494df343795fd3842a13452f90ac94579150674c9f23b5bdcd71
d3046c15b23edd28bffb5977d8050a72af1fe7f765a5ad6dd72b137649ad3bbc
93660b62f478e4962d6dc77d0b2032b11a048da01d89fe85fb09e5b91b3dcf86
5c7fd9650f323d7e48b8cd3d16c781d3794c58e30dc32842ef1bd68a056f0470
fd1ca610c3c0f892967ce0e4bbebb527d45f0fc9b3f379624ef4b6324090ac21
555dd2874eafc9cfa3015ba447a866bc7262b7bf40803ea5bd8b8d7e6596fbe9
87d0be38269a7c3ac7cc71b87c7f9cbfddb60cfb287b30840564ebe70418a73e
fe480b90b31bd8709b94e921b6523bd7759a34ff2b13cde965125af19d07fb22
40ef805fbbf333e9a2c47bf8ca3832dd854829da0a31469ec5fd271348b6fab4
a18280c9c08a4bb7ab5ba0534912a60d4951a34ee8eaff7434c6a21e9c3d6ca0
687587baff7f25ded9f03274277f12b6d6a347af2238c3b32defc2736bc7023b
301a9e3b24f14798ed32be5de3dd802b4c13edc182bc1e29f80a40a1dcc2425e
a7af551e08af17f0403e468e934307455069f0cc9bfb8d99455ce56bff0bce33
a9ce90aff1dd29db1fb434488567b7e1da454d1c277d3747b08e05d4ad954179
50fc67ea2617b38f2c01149272fda2e529b231f034f4a4a53c6f152f049107b5
SH256 hash:
c51455ed403da36cc82b0d46872248f7a9288e7f1db69c1a734ccf965c8d42c3
MD5 hash:
29c8497e0ec56ebaee24559e34e67b36
SHA1 hash:
9d992d61b1b169f7cf19fbefe1dfba79d222dbcb
Detections:
SUSP_OBF_NET_ConfuserEx_Name_Pattern_Jan24
Create hunting rule
Link:
https://www.unpac.me/results/29ad7e20-a951-4b98-87b5-3bee9ba2b8b1/
SH256 hash:
c253f236403f614e12416fdf1fcd8a6ce2089e667bdf0fef70c13b02ee06024d
MD5 hash:
a72d64581fadbfe11a7beb720e7d2a47
SHA1 hash:
ed165503966b98b64ea1bf4b482fab8405002288
Link:
https://www.unpac.me/results/29ad7e20-a951-4b98-87b5-3bee9ba2b8b1/
Malware family:
FormBook
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/55c48c9c8523/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:CP_Script_Inject_Detector
Create hunting rule
Author:DiegoAnalytics
Description:Detects attempts to inject code into another process across PE, ELF, Mach-O binaries
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:DetectEncryptedVariants
Create hunting rule
Author:Zinyth
Description:Detects 'encrypted' in ASCII, Unicode, base64, or hex-encoded
Rule name:dgaagas
Create hunting rule
Author:Harshit
Description:Uses certutil.exe to download a file named test.txt
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: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:TH_Win_ETW_Bypass_2025_CYFARE
Create hunting rule
Author:CYFARE
Description:Windows ETW Bypass Detection Rule - 2025
Reference:https://cyfare.net/

File information

The table below shows additional information about this malware sample such as delivery method and external references.

Cape
Cape
https://www.capesandbox.com/analysis/83984/

Comments