MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 8703839437ca7230a8158c1de52c4dcfa81ebc25b046258b42c855a20a895e83. 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 10 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 8703839437ca7230a8158c1de52c4dcfa81ebc25b046258b42c855a20a895e83
SHA3-384 hash: 44c38e2ffdebb00cbd975d55d535d963e3ed3cc19b454ae24142a897b113f63c27d571a805339678341e34e8ff7c9cc3
SHA1 hash: fe36455ff275057eb8f1d909b828dcc9079bb1fa
MD5 hash: 84173bcd907fb3234762722627f5e231
humanhash: connecticut-island-lemon-cat
File name:8703839437ca7230a8158c1de52c4dcfa81ebc25b046258b42c855a20a895e83
Download: download sample
Signature Formbook
Create hunting rule
File size:1'240'064 bytes
First seen:2025-09-05 12:43:13 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash 1895460fffad9475fda0c84755ecfee1 (296 x Formbook, 52 x AgentTesla, 35 x SnakeKeylogger)
ssdeep 24576:25EmXFtKaL4/oFe5T9yyXYfP1ijXdaasq3wMh5NeCFchzO:2PVt/LZeJbInQRaad3wwN
TLSH T16E45CF0273919062FFAB92734F5AF6115BBC79260123A62F13981D79FE701B1463E7A3
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 :
56
Origin country :
HU HU
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
8703839437ca7230a8158c1de52c4dcfa81ebc25b046258b42c855a20a895e83.exe
Verdict:
Malicious activity
Analysis date:
2025-09-05 13:19:25 UTC
Tags:
autoit
Link:
https://app.any.run/tasks/3fd831d4-5761-4344-9dd5-d13d805e363b

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/25419/
Verdict:
Malicious
Score:
91.7%
Link:
https://cyber-fortress.com/docs/result/index.php?id=68badb0beb163e0ec1847c7a
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 autoit compiled-script evasive fingerprint keylogger microsoft_visual_cc obfuscated packed packed packer_detected threat
Link:
https://www.filescan.io/uploads/68bae32e37c25fcf12d4c1b2/reports/0656073d-407a-4367-8409-5322a6fcfafe/overview
Verdict:
Malicious
Labled as:
AIT:Trojan.Nymeria
Link:
https://www.hybrid-analysis.com/sample/8703839437ca7230a8158c1de52c4dcfa81ebc25b046258b42c855a20a895e83
Verdict:
Malicious
File Type:
exe x32
First seen:
2025-08-17T21:20:00Z UTC
Last seen:
2025-08-17T21:20:00Z UTC
Hits:
~100
Detections:
Trojan-Dropper.Win32.Dorifel.sbd Trojan.Win32.Agent.sb PDM:Trojan.Win32.Generic Backdoor.Agent.HTTP.C&C Trojan.Win32.Inject.sb Trojan-Spy.Noon.HTTP.ServerRequest Trojan-Spy.Win32.Noon.sb Trojan.Win64.Injects.gst Trojan.Win32.Strab.sb HEUR:Trojan.Script.AUO.gen
Link:
https://opentip.kaspersky.com/8703839437ca7230a8158c1de52c4dcfa81ebc25b046258b42c855a20a895e83/results?tab=lookup
Malware family:
Formbook
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/dcf924a6-69e7-4bc4-8651-2d659c88063e
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/8703839437ca7230a8158c1de52c4dcfa81ebc25b046258b42c855a20a895e83
Gathering data
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/8703839437ca7230a8158c1de52c4dcfa81ebc25b046258b42c855a20a895e83/
Verdict:
Malicious
Threat:
Family.FORMBOOK
Link:
https://tip.neiki.dev/file/8703839437ca7230a8158c1de52c4dcfa81ebc25b046258b42c855a20a895e83
Threat name:
Win32.Trojan.AutoitInject
Create hunting rule
Status:
Malicious
First seen:
2025-08-18 00:16:51 UTC
File Type:
PE (Exe)
Extracted files:
28
AV detection:
28 of 38 (73.68%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=q4byhfbxzjzdbkavrqo6klcnz6ub5pbfwbdclc2czbk2ecujl2bq._file
Result
Malware family:
formbook
Create hunting rule
Score:
  10/10
Tags:
family:formbook discovery rat spyware stealer trojan
Link:
https://tria.ge/reports/250905-qhykvaxkt7/
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/03e85ec1-3b99-49f8-8fef-c6ff42951a8d
Unpacked files
SH256 hash:
8703839437ca7230a8158c1de52c4dcfa81ebc25b046258b42c855a20a895e83
MD5 hash:
84173bcd907fb3234762722627f5e231
SHA1 hash:
fe36455ff275057eb8f1d909b828dcc9079bb1fa
Link:
https://www.unpac.me/results/939b673b-7ed5-43d1-8830-a02c5916a55c/
SH256 hash:
874057a5ecfe75a53b1a050f4d21373eaecd1d27c6706d14ae2070570ea7b97f
MD5 hash:
9c5cae4bd238bc2f9ebe2a7ed961eb0e
SHA1 hash:
99156a75dee78370a4b7bbda663fa53c677c4b34
Detections:
win_formbook_g0
Create hunting rule
Link:
https://www.unpac.me/results/939b673b-7ed5-43d1-8830-a02c5916a55c/
Parent samples :
0faf94a24b00a7dca3cb0e26b29b0c3f72f66e2f968d997ad45e74620efeb11b
68b3414e84bca98a83ceebfc80623bd11d9dfda5452a775904b6bb707f44ab98
8703839437ca7230a8158c1de52c4dcfa81ebc25b046258b42c855a20a895e83
SH256 hash:
1e703cefc903f3983140e2da27784219a3e26f293a42276b5dc7eddb2fab2ebf
MD5 hash:
a54fc13b2bd0b94321229cda63bdf5ee
SHA1 hash:
1475111ef7e00f5045dbe1b30b92deaa8234b963
Link:
https://www.unpac.me/results/939b673b-7ed5-43d1-8830-a02c5916a55c/
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/8703839437ca7230a8158c1de52c4dcfa81ebc25b046258b42c855a20a895e83

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:golang_bin_JCorn_CSC846
Create hunting rule
Author:Justin Cornwell
Description:CSC-846 Golang detection ruleset
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: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.

Cape
Cape
https://www.capesandbox.com/analysis/25419/

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