MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 b3519529f6d34d7fa3108901fe68b12f4577de4e610433e1ae733666fd8f1126. 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 19 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: b3519529f6d34d7fa3108901fe68b12f4577de4e610433e1ae733666fd8f1126
SHA3-384 hash: dcbd1a81a6b9a463edf971bab2951dd4ac5b044ddec156dfe49601099529c9dfc1c103545b6a70954ffd58099dd0baed
SHA1 hash: a095d02feeaadf983407d670378a03f5660d7b7c
MD5 hash: 76f13ced9abe39f3dcd3056fd4acf5a3
humanhash: floor-diet-beryllium-six
File name:Halkbank,pdf.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:1'240'576 bytes
First seen:2025-08-25 06:43:35 UTC
Last seen:2025-08-27 08:44:16 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash 1895460fffad9475fda0c84755ecfee1 (299 x Formbook, 52 x AgentTesla, 35 x SnakeKeylogger)
ssdeep 24576:o5EmXFtKaL4/oFe5T9yyXYfP1ijXdaCB+/FelUIGEYFUR:oPVt/LZeJbInQRaCB+/FeVGLF
Threatray 448 similar samples on MalwareBazaar
TLSH T10C45BF0273C1C062FFAB95334B5AF6115BBD79260123A62F13981D7AFA701B1563E7A3
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 abuse_ch
Tags:exe FormBook geo Halkbank TUR

Intelligence

File Origin
# of uploads :
5
# of downloads :
62
Origin country :
SE SE
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
Halkbank,pdf.exe
Verdict:
Malicious activity
Analysis date:
2025-08-25 07:18:26 UTC
Tags:
peristeronic
Link:
https://app.any.run/tasks/4097e3b7-0190-4a94-94fe-aef270232c14

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/23340/
Verdict:
Malicious
Score:
91.7%
Link:
https://cyber-fortress.com/docs/result/index.php?id=68ac066c6eed937d746da5ad
Tags:
autoit emotet
Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Creating a file in the %temp% directory
Launching a process
Сreating synchronization primitives
Unauthorized injection to a system process
Verdict:
Likely Malicious
Threat level:
  7.5/10
Confidence:
100%
Tags:
adaptive-context anti-debug autoit compiled-script fingerprint keylogger lolbin microsoft_visual_cc packed reg threat
Link:
https://www.filescan.io/uploads/68ac06af7137d684583ade08/reports/369ee978-bcaa-434d-9eb1-7d0d07f9abdb/overview
Verdict:
Malicious
Labled as:
Win/malicious_confidence_90%
Link:
https://www.hybrid-analysis.com/sample/b3519529f6d34d7fa3108901fe68b12f4577de4e610433e1ae733666fd8f1126
Verdict:
Malicious
File Type:
exe x32
First seen:
2025-08-25T01:43:00Z UTC
Last seen:
2025-08-25T01:43:00Z UTC
Hits:
~100
Link:
https://opentip.kaspersky.com/b3519529f6d34d7fa3108901fe68b12f4577de4e610433e1ae733666fd8f1126/results?tab=lookup
Malware family:
Formbook
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/3e501329-0779-4914-bb28-ee7e26714236
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1764254
Signature
Binary is likely a compiled AutoIt script file
Found API chain indicative of sandbox detection
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 submitted file
Performs DNS queries to domains with low reputation
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)
Writes to foreign memory regions
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1764254 Sample: Halkbank,pdf.exe Startdate: 25/08/2025 Architecture: WINDOWS Score: 100 35 www.thrivepro.xyz 2->35 37 www.copygamefi.xyz 2->37 39 18 other IPs or domains 2->39 41 Suricata IDS alerts for network traffic 2->41 43 Multi AV Scanner detection for submitted file 2->43 45 Yara detected FormBook 2->45 47 Binary is likely a compiled AutoIt script file 2->47 11 Halkbank,pdf.exe 4 2->11         started        signatures3 49 Performs DNS queries to domains with low reputation 37->49 process4 signatures5 59 Binary is likely a compiled AutoIt script file 11->59 61 Found API chain indicative of sandbox detection 11->61 63 Writes to foreign memory regions 11->63 65 2 other signatures 11->65 14 svchost.exe 11->14         started        process6 signatures7 67 Maps a DLL or memory area into another process 14->67 17 VnDwKQ5pRmIj7x.exe 14->17 injected process8 dnsIp9 29 www.twinspapa81.shop 110.10.197.56, 49742, 49743, 49744 SKB-ASSKBroadbandCoLtdKR Korea Republic of 17->29 31 www.mixi.jp 43.207.28.14, 49718, 49719, 49720 LILLY-ASUS Japan 17->31 33 11 other IPs or domains 17->33 20 isoburn.exe 13 17->20         started        process10 signatures11 51 Tries to steal Mail credentials (via file / registry access) 20->51 53 Tries to harvest and steal browser information (history, passwords, etc) 20->53 55 Modifies the context of a thread in another process (thread injection) 20->55 57 2 other signatures 20->57 23 chrome.exe 20->23         started        25 firefox.exe 20->25         started        process12 process13 27 WerFault.exe 4 23->27         started       
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/b3519529f6d34d7fa3108901fe68b12f4577de4e610433e1ae733666fd8f1126
Gathering data
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/b3519529f6d34d7fa3108901fe68b12f4577de4e610433e1ae733666fd8f1126/
Threat name:
Win32.Trojan.AutoitInject
Create hunting rule
Status:
Malicious
First seen:
2025-08-25 04:46:40 UTC
File Type:
PE (Exe)
Extracted files:
28
AV detection:
21 of 24 (87.50%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=wnizkkpw2ngx7iyqrea742frf5cxpxsomecdhynoom3gn7mpceta._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Similar samples:
0ec78936cfd600f8f7b64b4d58bf9ea1fb2586c96e0e2fefa938c758712b24d1
Formbook
0faf94a24b00a7dca3cb0e26b29b0c3f72f66e2f968d997ad45e74620efeb11b
Formbook
261a6e855850526b2697a4065225fee9338f1e2c916f57e60e04516709069141
Formbook
3646eadbf8a4b451c80fc5e3d74a4fbdcb8d2633933cdf3ba038533e56c98e9d
Formbook
7a0bd1cc99236bcab7acb21efb90fcdf612cc14e51d837d9e773f63ebc37c8de
Formbook
92465a1c7629bb10ce9f67b667871537887a281b66a90dd4d481612111d3dd63
Formbook
9b5938a8e6a10e191231b99e55c60c7ebce26dbc038012b60bc9682719dded33
Formbook
error
Formbook
+ 438 additional samples on MalwareBazaar
Result
Malware family:
n/a
Score:
  5/10
Tags:
discovery
Link:
https://tria.ge/reports/250825-hjp14asxg1/
Behaviour
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
Verdict:
Suspicious
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/8fbc3c8a-2a15-4cfc-80e8-3e8e110aa4fc
Unpacked files
SH256 hash:
b3519529f6d34d7fa3108901fe68b12f4577de4e610433e1ae733666fd8f1126
MD5 hash:
76f13ced9abe39f3dcd3056fd4acf5a3
SHA1 hash:
a095d02feeaadf983407d670378a03f5660d7b7c
Link:
https://www.unpac.me/results/973891c1-7e46-4615-b47f-147eb0eb93d2/
SH256 hash:
ab600bb53740320b64bcadfe958098e62a3f571fd410d80f17ed64fa7284e23b
MD5 hash:
08bca8e0a0f827f6dbc11ce93663cc65
SHA1 hash:
70de315a424cbfede37e47ac249d6b8781325a0c
Link:
https://www.unpac.me/results/973891c1-7e46-4615-b47f-147eb0eb93d2/
SH256 hash:
109499fe727a3836c0e07d87139f9e573ed9630e9ced05a3d67a04dfea633336
MD5 hash:
476c2a3791e77cfd5c0293ae4369ec26
SHA1 hash:
cdf8d671c463d0c5b453feffa9cd09fe0a1d0f87
Detections:
win_formbook_g0
Create hunting rule
Link:
https://www.unpac.me/results/973891c1-7e46-4615-b47f-147eb0eb93d2/
Parent samples :
b3519529f6d34d7fa3108901fe68b12f4577de4e610433e1ae733666fd8f1126
63042251c69af48ed27bf8dc6209781fa1b37dbd799105d465f80c4a91e10ac8
5de40cb80d71ff5cabc77ed1ae871532f78c3a74823c92e0a54ed1a8fd062297
18082263ea483e29b2c7a346f29f4ff19a841f6b3e0d47cd4790198d5941a57f
08b96a68c593011798acf77b26d2564f0855ad6792f9fb055e9bea2bcae4c1c1
7a3cff64ac762d50b7a624e242fe4f2f6e23ad03da661f9b4046e6b604b31836
b8adc251d1e8c5217d3de458c277b3866f1b90e8d3d998f0b40ba5df25cbee17
fd2ce532e9c7694be3ffe0ce3f0c9024929fd3dca7e9147bafb7b7ef1aeeded8
Malware family:
FormBook
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/b3519529f6d3/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/b3519529f6d34d7fa3108901fe68b12f4577de4e610433e1ae733666fd8f1126

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: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:pe_detect_tls_callbacks
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: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 8a776b393d81b52820c56450d717f2d960fecb6304fc52aaba50672accd3d73c

Formbook

Executable exe b3519529f6d34d7fa3108901fe68b12f4577de4e610433e1ae733666fd8f1126

(this sample)

Cape
Cape
https://www.capesandbox.com/analysis/23340/
  
Dropped by
SHA256 8a776b393d81b52820c56450d717f2d960fecb6304fc52aaba50672accd3d73c
  
Dropped by
MD5 b329f00aa5edfca0efafe12d65a98562
  
Dropped by
SHA256 394de6f615eb28a21c4d930a40aa398baa6d5a0322467a851f45227ac3e5494f
  
Dropped by
MD5 ccf54574b00d25ed5fa4ac7ad261ef3d
  
Dropped by
SHA256 4c539de66c7826f9bc395602b928542c9ec2d49eb6eb7f61fe708c35e08a6012
  
Dropped by
MD5 6eaca06e34eb5850a61e869e5f28f3c0

Comments