MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 b4a45c3015955255963830e23e4744ad4f934fb0abb473bb2a21de8b64b097ef. 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 21 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: b4a45c3015955255963830e23e4744ad4f934fb0abb473bb2a21de8b64b097ef
SHA3-384 hash: 9ed45e034f3cd76aed813e56b44d569a47fb805811ac77aafde44ace1e01c1e5bde6a2928807f434af6ff4e621701101
SHA1 hash: b09a0e59c96669d42372a517faf5bbbd2ec3c786
MD5 hash: 7a28b823dd01f16a37d5d5b88bb748ca
humanhash: xray-vermont-white-west
File name:b4a45c3015955255963830e23e4744ad4f934fb0abb473bb2a21de8b64b097ef
Download: download sample
Signature Formbook
Create hunting rule
File size:1'192'448 bytes
First seen:2025-09-05 12:34:35 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash 91d07a5e22681e70764519ae943a5883 (93 x Formbook, 14 x RemcosRAT, 11 x AgentTesla)
ssdeep 24576:Btb20pkaCqT5TBWgNQ7a4gjufhH7Pl+pu8zFPhQBL6A:SVg5tQ7a4gifypu0hQ95
Threatray 1'985 similar samples on MalwareBazaar
TLSH T1C845DF2363DD8360C7B25273BA167701AEBF7C2506B5F86B2FD8193DA930121525EA73
TrID 40.3% (.EXE) Win64 Executable (generic) (10522/11/4)
19.3% (.EXE) Win16 NE executable (generic) (5038/12/1)
17.2% (.EXE) Win32 Executable (generic) (4504/4/1)
7.7% (.EXE) OS/2 Executable (generic) (2029/13)
7.6% (.EXE) Generic Win/DOS Executable (2002/3)
Magika pebin
Reporter adrian__luca
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
1
# of downloads :
57
Origin country :
HU HU
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
b4a45c3015955255963830e23e4744ad4f934fb0abb473bb2a21de8b64b097ef
Verdict:
No threats detected
Analysis date:
2025-09-05 14:49:55 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/dfbe3f0f-32e9-4e73-b76f-460b0ff0f3af

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/25353/
Detection(s):
SecuriteInfo.com.PSW.Agent.BORA.UNOFFICIAL
Create hunting rule

Verdict:
Malicious
Score:
96.5%
Link:
https://cyber-fortress.com/docs/result/index.php?id=68bad9073e988eb6ab83c2f2
Tags:
autoit emotet
Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Creating a file in the %temp% directory
Launching a process
Сreating synchronization primitives
Sending a custom TCP request
Unauthorized injection to a system process
Verdict:
Likely Malicious
Threat level:
  7.5/10
Confidence:
100%
Tags:
adaptive-context autoit compiled-script fingerprint keylogger microsoft_visual_cc obfuscated packed packed packer_detected
Link:
https://www.filescan.io/uploads/68baddbf20d0ee406d96a535/reports/e3fd3893-04aa-4480-b532-af107fa6aa53/overview
Verdict:
Malicious
Labled as:
Trojan.Generic
Link:
https://www.hybrid-analysis.com/sample/b4a45c3015955255963830e23e4744ad4f934fb0abb473bb2a21de8b64b097ef
Verdict:
Malicious
File Type:
exe x32
First seen:
2025-08-13T21:21:00Z UTC
Last seen:
2025-08-13T21:21:00Z UTC
Hits:
~100
Link:
https://opentip.kaspersky.com/b4a45c3015955255963830e23e4744ad4f934fb0abb473bb2a21de8b64b097ef/results?tab=lookup
Malware family:
Formbook
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/1a0a8ebd-6db9-4bdc-ae6e-a074efe0832c
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/b4a45c3015955255963830e23e4744ad4f934fb0abb473bb2a21de8b64b097ef
Verdict:
Malware
YARA:
7 match(es)
Tags:
AutoIt Decompiled Executable PDB Path PE (Portable Executable) PE File Layout Suspect Win 32 Exe x86
Link:
https://app.malva.re/file/7a28b823dd01f16a37d5d5b88bb748ca
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/b4a45c3015955255963830e23e4744ad4f934fb0abb473bb2a21de8b64b097ef/
Threat name:
Win32.Trojan.AutoitInject
Create hunting rule
Status:
Malicious
First seen:
2025-08-14 00:21:09 UTC
File Type:
PE (Exe)
Extracted files:
14
AV detection:
30 of 36 (83.33%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=wssfymavsvjflfrygdrd4r2evvhzgt5qvo2hhozkehpiwzfqs7xq._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
autoit
Create hunting rule
Similar samples:
05da500934c4ab1b7bbc5e366f571bfe47d99a24efb4419966029f6fb8732de2
Formbook
14a371e6549ffd778165044baeafb53330d9f0756dd17369d5abc3e56f3951fa
Formbook
170c2b10322d1b2bbd5403091730544828633e2bdf59af1134b1ae1898a8d90c
Formbook
659cfb359d2e9890f3488d6dd65852151f9a3d6bdc8c27fd45e8a78b3489a354
Formbook
6a11ab33aa16d2d8ba08cb3c6edb5e0613c1d459287261ecd907f9359068cbc8
Formbook
89298940d17702803fc97b47258c639f223ddebd6368a0d946647cb79acacc2e
Formbook
a21182bf32d320deebafbf52f06c370fe3762ec55793e09df10ce9e27bfe799a
Formbook
affbb0db85505a477fad583411e0361f0502ef4d9c46059da31ca85eb0e0b5d6
Formbook
b75db5d4979ec63cf001640529fd3be14433a40d03e17e751754909617ccc4af
Formbook
d3ad7e22a740b5654dc36d3d803984ad83c9b2627edee55630c5a9816d42c085
Formbook
+ 1'975 additional samples on MalwareBazaar
Result
Malware family:
formbook
Create hunting rule
Score:
  10/10
Tags:
family:formbook discovery rat spyware stealer trojan
Link:
https://tria.ge/reports/250905-p51s2szvdt/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of FindShellTrayWindow
Suspicious use of SendNotifyMessage
Suspicious use of WriteProcessMemory
Program crash
System Location Discovery: System Language Discovery
Suspicious use of SetThreadContext
Formbook payload
Formbook
Formbook family
Verdict:
Suspicious
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/262a6864-c694-41d0-a218-015f46a76ed6
Unpacked files
SH256 hash:
b4a45c3015955255963830e23e4744ad4f934fb0abb473bb2a21de8b64b097ef
MD5 hash:
7a28b823dd01f16a37d5d5b88bb748ca
SHA1 hash:
b09a0e59c96669d42372a517faf5bbbd2ec3c786
Link:
https://www.unpac.me/results/a6760e71-067a-458c-bfec-50ac1c2edd95/
SH256 hash:
3e674b562fe0906e2cd4769ba39466254cfeafb473d8900000dd42d47b5719bb
MD5 hash:
506336e740ccff4d4f5d5bc03bf83c0b
SHA1 hash:
43e9121ca476f98b0e629bca933eb9ebee10fe31
Link:
https://www.unpac.me/results/a6760e71-067a-458c-bfec-50ac1c2edd95/
SH256 hash:
8e23e59d05a58c7ec2cf03a753725965cc5403717ba4e525386d04c9e98d7bc2
MD5 hash:
c2436b64142f56932d9109d5e29537a2
SHA1 hash:
aa2f8a95e1816390e6a28ec5f1cb1219d4668077
Detections:
win_formbook_g0
Create hunting rule
Link:
https://www.unpac.me/results/a6760e71-067a-458c-bfec-50ac1c2edd95/
Parent samples :
a4382d8a24fe091856ea0fcfb56c132cc16fb845a59f22da3447c92350c0f575
b4a45c3015955255963830e23e4744ad4f934fb0abb473bb2a21de8b64b097ef
1a93fe1b2a8ade51afc67b56f556d9b9bfb4e4fd623e56ab315fba81e08b538a
c2f383cb026cb3d627be10fd3818c13732f2b2c391bcff1299ff52caa58845c0
48bc250afec3ded95485ddc714c2fdec52ef7c22666ab601cbc41da8eed66999
0d4e1383139d3f9c00be8e7a824dacd04eb9d8d6e13e4114c96fd69b883c9ace
29409d16f6b7c20ee618afd648e422336fb56c0df7fa73e8e2a03d9b7fb3621f
Malware family:
FormBook
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/b4a45c301595/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/b4a45c3015955255963830e23e4744ad4f934fb0abb473bb2a21de8b64b097ef

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:AutoIT_Compiled
Create hunting rule
Author:@bartblaze
Description:Identifies compiled AutoIT script (as EXE). This rule by itself does NOT necessarily mean the detected file is malicious.
Rule name:CP_AllMal_Detector
Create hunting rule
Author:DiegoAnalytics
Description:CrossPlatform All Malwares Detector: Detect PE, ELF, Mach-O, scripts, archives; overlay, obfuscation, encryption, spoofing, hiding, high entropy, network communication
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__API
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
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:Formbook
Create hunting rule
Author:kevoreilly
Description:Formbook Payload
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:meth_stackstrings
Create hunting rule
Author:Willi Ballenthin
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: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)
Rule name:YahLover
Create hunting rule
Author:Kevin Falcoz
Description:YahLover

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/25353/

Comments