MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 3fc89ad938129437b93f26db8776fc6aa89bd3811b2f1dede0541b5a088aa983. 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: 15


Intelligence 15 IOCs YARA 8 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 3fc89ad938129437b93f26db8776fc6aa89bd3811b2f1dede0541b5a088aa983
SHA3-384 hash: 854c7f0295364e5aba30db82093b456e5d5bffaa99cbbd94fde61851b0b893ee784ca49c915d8056f9b8b0452f067bba
SHA1 hash: e641a5038f23c633f65f2cf6b5f29f807e15673f
MD5 hash: 375b39d22f6d9c1b1d7e71fea6d84b9e
humanhash: eleven-burger-orange-high
File name:3fc89ad938129437b93f26db8776fc6aa89bd3811b2f1dede0541b5a088aa983
Download: download sample
Signature Formbook
Create hunting rule
File size:1'230'848 bytes
First seen:2025-06-06 13:19:49 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash 3d95adbf13bbe79dc24dccb401c12091 (881 x AgentTesla, 737 x FormBook, 236 x SnakeKeylogger)
ssdeep 24576:Otb20pkaCqT5TBWgNQ7aJxe/Sm6TqFy6A:7Vg5tQ7aJJmM5
Threatray 2'383 similar samples on MalwareBazaar
TLSH T12E45BE1333DDC2A5C37361B37919B711AEBB7C5A06A5F41F2FD40E3DA8A1222125E663
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
dhash icon f29296968e9e9ea6 (60 x AgentTesla, 37 x RedLineStealer, 35 x Formbook)
Reporter adrian__luca
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
1
# of downloads :
383
Origin country :
HU HU
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
3fc89ad938129437b93f26db8776fc6aa89bd3811b2f1dede0541b5a088aa983
Verdict:
No threats detected
Analysis date:
2025-06-06 13:32:51 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/f7ffeded-b864-4847-b0ed-69aa378bb62e

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/7713/
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=6842ed038bd5d68a12e5f17d
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:
Malicious
Labled as:
Trojan.Generic
Link:
https://www.hybrid-analysis.com/sample/3fc89ad938129437b93f26db8776fc6aa89bd3811b2f1dede0541b5a088aa983
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.
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/456dd098-6a7e-4abc-9889-de6b03d66962
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1708200
Signature
Binary is likely a compiled AutoIt script file
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
Queues an APC in another process (thread injection)
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: 1708200 Sample: 39v3nK90XZ.exe Startdate: 06/06/2025 Architecture: WINDOWS Score: 100 26 www.rentnt.xyz 2->26 28 www.complexcomputer.xyz 2->28 30 17 other IPs or domains 2->30 46 Suricata IDS alerts for network traffic 2->46 48 Multi AV Scanner detection for submitted file 2->48 50 Yara detected FormBook 2->50 52 Binary is likely a compiled AutoIt script file 2->52 10 39v3nK90XZ.exe 4 2->10         started        signatures3 54 Performs DNS queries to domains with low reputation 28->54 process4 signatures5 56 Binary is likely a compiled AutoIt script file 10->56 58 Writes to foreign memory regions 10->58 60 Maps a DLL or memory area into another process 10->60 62 Switches to a custom stack to bypass stack traces 10->62 13 svchost.exe 10->13         started        process6 signatures7 64 Maps a DLL or memory area into another process 13->64 16 Jk6GNexewFC76j.exe 13->16 injected process8 process9 18 ROUTE.EXE 13 16->18         started        signatures10 38 Tries to steal Mail credentials (via file / registry access) 18->38 40 Tries to harvest and steal browser information (history, passwords, etc) 18->40 42 Modifies the context of a thread in another process (thread injection) 18->42 44 3 other signatures 18->44 21 PQ3vpBTtj.exe 18->21 injected 24 firefox.exe 18->24         started        process11 dnsIp12 32 www.tridentoutdoor.net 66.223.49.89, 49703, 49704, 49705 COGECO-PEER1CA Canada 21->32 34 rentnt.xyz 3.33.130.190, 49694, 49699, 49700 AMAZONEXPANSIONGB United States 21->34 36 7 other IPs or domains 21->36
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/3fc89ad938129437b93f26db8776fc6aa89bd3811b2f1dede0541b5a088aa983
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/3fc89ad938129437b93f26db8776fc6aa89bd3811b2f1dede0541b5a088aa983/
Threat name:
Win32.Trojan.Leonem
Create hunting rule
Status:
Malicious
First seen:
2025-05-20 03:25:00 UTC
AV detection:
19 of 24 (79.17%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=h7ejvwjyckkdpoj7e3nyo5x4nkujxu4bdmxr33pakqnvucekvgbq._file
Verdict:
malicious
Label(s):
autoit
Create hunting rule
formbook
Create hunting rule
unc_loader_036
Create hunting rule
Similar samples:
2744da94da0a5d848f9fa9dc01f13b7040d2eb9305954fdfacf97f4aa9016495
Formbook
3fc89ad938129437b93f26db8776fc6aa89bd3811b2f1dede0541b5a088aa983
Formbook
681d856fffd8a6f16f3b0f62f6aad5cd1adb042be504b3e9dcbc5ed469d7450f
Formbook
6ae5571ed26d2de037d1717137fd7f0c3b77a19530003c206280bdb49044a6f7
Formbook
8ddcd9773b5c9cec6e3d0e4d996038faa74cbe9a971665cf596d8786de25ac01
Formbook
978fa4742d2cb147265a502d12dec4b3663ca375dae526eb5e0a3edf723226c4
Formbook
d2e4942924fa6f218f70772eefd5ef57ae369799ba23cd70913f4d0b8fd6da94
Formbook
ea5ad478df7db224610821def4d39b12ba7ef2f7a95fe88c9bc30a135bca5739
Formbook
eeaaefcf534a0e0bd6b47ba19589f1f2cedfa2fb9bd858e13a823066e948d3d7
Formbook
error
Formbook
+ 2'373 additional samples on MalwareBazaar
Result
Malware family:
n/a
Score:
  5/10
Tags:
discovery
Link:
https://tria.ge/reports/250606-qldd3sck5t/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of FindShellTrayWindow
Suspicious use of SendNotifyMessage
Suspicious use of WriteProcessMemory
System Location Discovery: System Language Discovery
Suspicious use of SetThreadContext
Verdict:
Malicious
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/850a1212-bbdf-484a-b42a-06537a49521d
Unpacked files
SH256 hash:
c67674380f2124bac258b230dbcd75f91668c93962747733eef243a796b13c89
MD5 hash:
974caa48358492c280531948b40dc5d1
SHA1 hash:
6b47166dde69e45066f08ebe64c225187a1aa3c6
Link:
https://www.unpac.me/results/ec45a6bb-1e19-41f6-9a43-562570a35f26/
SH256 hash:
8dc25bfa12ac5ca20d3e4c9203aab8b4e37e354858d5929033f574bdfce12dcb
MD5 hash:
7e0d9bbbee8933f58d44a3f099acd815
SHA1 hash:
da91c82a41e9a60e3c874929a8a1fab948fbe8a4
Detections:
win_formbook_g0
Create hunting rule
Link:
https://www.unpac.me/results/ec45a6bb-1e19-41f6-9a43-562570a35f26/
Parent samples :
cf9e29c9c2315237b9230d3f01e55c60f5e7c89b980ce78912258b1bee2f4124
681d856fffd8a6f16f3b0f62f6aad5cd1adb042be504b3e9dcbc5ed469d7450f
3fc89ad938129437b93f26db8776fc6aa89bd3811b2f1dede0541b5a088aa983
SH256 hash:
3fc89ad938129437b93f26db8776fc6aa89bd3811b2f1dede0541b5a088aa983
MD5 hash:
375b39d22f6d9c1b1d7e71fea6d84b9e
SHA1 hash:
e641a5038f23c633f65f2cf6b5f29f807e15673f
Link:
https://www.unpac.me/results/ec45a6bb-1e19-41f6-9a43-562570a35f26/
Malware family:
FormBook
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/3fc89ad93812/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/3fc89ad938129437b93f26db8776fc6aa89bd3811b2f1dede0541b5a088aa983

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: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_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)
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/7713/

Comments