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MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 c4e4375701cb85ee71bf3182cdabd6ab27ef71c9cc635469f76c85da29f4e102. 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: 19


Intelligence 19 IOCs YARA 4 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: c4e4375701cb85ee71bf3182cdabd6ab27ef71c9cc635469f76c85da29f4e102
SHA3-384 hash: eaa5519cc6f7f6b59e8bc80fdb4be060b1566c0f0543109c0e2992f0aa403b65961c9e47016f5bbd4475c0c6efaa4c0e
SHA1 hash: 941f8af109eef33359f03de6b214f8b291a7d4a7
MD5 hash: 6d23e386cc002cbdc2e01fdc430fec09
humanhash: triple-iowa-twelve-wyoming
File name:PO#14202609SK.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:1'055'744 bytes
First seen:2026-09-22 06:34:53 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (49'245 x AgentTesla, 20'500 x Formbook, 12'374 x SnakeKeylogger)
ssdeep 12288:zJpEAGV4v4ErtYVOhjYR+bZqoRM7zNQNTiG4TIkvmtLQcckKXO/5BtFuDrkJmF2M:zEChhjYRYZ1a1QFs0OyLQcwqBTFM
TLSH T11225F114335BDC03D1A61FB45DF0D3B412B8AE45A812D2579FE67DEFBA297462888383
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 lowmal3
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
1
# of downloads :
152
Origin country :
DE DE
Vendor Threat Intelligence
Malware configuration found for:
NETReactor RoboSki
Details
Link:
https://research.acce.ciphertechsolutions.com/results/bb0afbc0-0a28-471d-b23b-c80009780325/
Malware family:
formbook
Create hunting rule
ID:
1
File name:
exe
Verdict:
Malicious activity
Analysis date:
2026-09-22 07:04:32 UTC
Tags:
netreactor formbook stealer xloader
Link:
https://app.any.run/tasks/f78cd60d-9dd7-4a5f-9919-f672a2122360

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/88221/
Detection(s):
SecuriteInfo.com.Trojan.PackedNET.3636.16996.22330.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
Launching a process
Сreating synchronization primitives
Launching cmd.exe command interpreter
Setting browser functions hooks
Unauthorized injection to a system process
Unauthorized injection to a browser process
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
dropper formbook net_reactor obfuscated packed packed phishing
Link:
https://www.filescan.io/uploads/6ab221a77b19c9a82164ecc0/reports/8eeb8380-a06c-4e03-94aa-9059a303e243/overview
Verdict:
Malicious
Labled as:
Lazy.Generic
Link:
https://www.hybrid-analysis.com/sample/c4e4375701cb85ee71bf3182cdabd6ab27ef71c9cc635469f76c85da29f4e102
Verdict:
Malicious
File Type:
exe x32
First seen:
2026-09-17T00:52:00Z UTC
Last seen:
2026-09-24T04:14:00Z UTC
Hits:
~100
Link:
https://opentip.kaspersky.com/c4e4375701cb85ee71bf3182cdabd6ab27ef71c9cc635469f76c85da29f4e102/results?tab=lookup
Verdict:
Unknown
Link:
https://analyze.intezer.com/analyses/c183ba89-f6dd-48ab-a722-29da13616934
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1975987
Signature
.NET source code contains method to dynamically call methods (often used by packers)
.NET source code contains potential unpacker
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Found malware configuration
Initial sample is a PE file and has a suspicious name
Injects a PE file into a foreign processes
Joe Sandbox ML detected suspicious sample
Malicious sample detected (through community Yara rule)
Maps a DLL or memory area into another process
Modifies the context of a thread in another process (thread injection)
Modifies the prolog of user mode functions (user mode inline hooks)
Multi AV Scanner detection for submitted file
Queues an APC in another process (thread injection)
Sample uses process hollowing technique
Suricata IDS alerts for network traffic
Switches to a custom stack to bypass stack traces
System process connects to network (likely due to code injection or exploit)
Tries to detect virtualization through RDTSC time measurements
Unusual module load detection (module proxying)
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1975987 Sample: PO#14202609SK.exe Startdate: 22/09/2026 Architecture: WINDOWS Score: 100 31 www.topup999thx.com 2->31 33 www.steeptech.dev 2->33 35 10 other IPs or domains 2->35 43 Suricata IDS alerts for network traffic 2->43 45 Found malware configuration 2->45 47 Malicious sample detected (through community Yara rule) 2->47 49 9 other signatures 2->49 11 PO#14202609SK.exe 3 2->11         started        signatures3 process4 file5 29 C:\Users\user\...\PO#14202609SK.exe.log, ASCII 11->29 dropped 61 Tries to detect virtualization through RDTSC time measurements 11->61 63 Injects a PE file into a foreign processes 11->63 65 Unusual module load detection (module proxying) 11->65 67 Switches to a custom stack to bypass stack traces 11->67 15 PO#14202609SK.exe 11->15         started        signatures6 process7 signatures8 69 Modifies the context of a thread in another process (thread injection) 15->69 71 Maps a DLL or memory area into another process 15->71 73 Sample uses process hollowing technique 15->73 75 Queues an APC in another process (thread injection) 15->75 18 explorer.exe 42 7 15->18 injected process9 dnsIp10 37 www.haolongwang.com 38.6.169.118, 49724, 80 PEG-SV-PEGTECHINCUS United States 18->37 39 b62vqgms.svip-jidun.com 43.243.73.235, 49725, 80 CTGSERVERLIMITED-AS-APCTGServerLimitedHK Hong Kong SAR China 18->39 41 4 other IPs or domains 18->41 51 System process connects to network (likely due to code injection or exploit) 18->51 22 cmmon32.exe 18->22         started        signatures11 process12 signatures13 53 Modifies the context of a thread in another process (thread injection) 22->53 55 Maps a DLL or memory area into another process 22->55 57 Tries to detect virtualization through RDTSC time measurements 22->57 59 2 other signatures 22->59 25 cmd.exe 1 22->25         started        process14 process15 27 conhost.exe 25->27         started       
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/c4e4375701cb85ee71bf3182cdabd6ab27ef71c9cc635469f76c85da29f4e102
Verdict:
inconclusive
YARA:
10 match(es)
Tags:
.Net Executable Managed .NET PE (Portable Executable) PE File Layout SOS: 0.64 Win 32 Exe x86
Link:
https://app.malva.re/file/6d23e386cc002cbdc2e01fdc430fec09
Detection:
formbook
Create hunting rule
Link:
https://mwdb.cert.pl/sample/c4e4375701cb85ee71bf3182cdabd6ab27ef71c9cc635469f76c85da29f4e102/
Threat name:
Win32.Backdoor.FormBook
Create hunting rule
Status:
Malicious
First seen:
2026-09-18 01:09:00 UTC
File Type:
PE (.Net Exe)
Extracted files:
7
AV detection:
27 of 36 (75.00%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=ytsdovybzoc644n7ggbm3k6wvmt664ojzrrvi2pxnsc5ukpu4eba._file
Verdict:
malicious
Label(s):
Formbook
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Link:
https://reports.threatray.com/4f7fc2d4-9304-473e-981d-97190d7da097
Result
Malware family:
formbook
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Score:
  10/10
Tags:
family:formbook campaign:goho discovery rat spyware stealer trojan
Link:
https://tria.ge/reports/260922-hcg2xaab48/
Behaviour
Gathers network information
Modifies registry class
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of UnmapMainImage
Suspicious use of WriteProcessMemory
System Location Discovery: System Language Discovery
Suspicious use of SetThreadContext
Family: Formbook
Formbook payload
Unpacked files
SH256 hash:
c4e4375701cb85ee71bf3182cdabd6ab27ef71c9cc635469f76c85da29f4e102
MD5 hash:
6d23e386cc002cbdc2e01fdc430fec09
SHA1 hash:
941f8af109eef33359f03de6b214f8b291a7d4a7
Link:
https://www.unpac.me/results/fdc3b95f-eb69-4b3b-a200-585cea5353c7/
SH256 hash:
ccda20e8c2a29305d96d859fdd6cdf7bc580cda1fbcbcd8a010654706d472dcc
MD5 hash:
a53d8c0690d596d4fe327a12772b56aa
SHA1 hash:
1797b1bb3c44a1f46d448ce9ec50f286783533cb
Detections:
SUSP_OBF_NET_ConfuserEx_Name_Pattern_Jan24
Create hunting rule
Link:
https://www.unpac.me/results/fdc3b95f-eb69-4b3b-a200-585cea5353c7/
SH256 hash:
c4ff80fbb1b2133b1f76bb68d29f776437a5b168ab12da8876aa25f16888a391
MD5 hash:
2df86e0c3383c2a1ba077bd3eac73794
SHA1 hash:
f4b103d7cd6d89ec06da3770e66382f1cd854402
Detections:
SUSP_OBF_NET_Reactor_Indicators_Jan24
Create hunting rule
Link:
https://www.unpac.me/results/fdc3b95f-eb69-4b3b-a200-585cea5353c7/
Parent samples :
4a9a4282a7c02191cfdcc480e7af5fc5619be8902cae717cda731dd32cf493c5
1d75132e5ab94b7c75d14101f440af68e9fd46ff81286b280955f5e462148417
3f29b402fc1126ee40b8c2e7058f67a49fd3518d3d2e43b7dabf5da4e9f89589
b26c37434671d62ad1e1396db886d0419bf778d4ca5b3b54cf46319c40c277e0
c4e4375701cb85ee71bf3182cdabd6ab27ef71c9cc635469f76c85da29f4e102
767acae341ce8777302e61e0a7516bf4a2db5a34c2a733b5cd4a51b5f6d20ae5
e5530ac3388f55153f5ae4ebf01abdfbcb1a2e76ffac7e8ca1ebbcac3364fb3a
SH256 hash:
618a08e5f1c4b8f0ca1b1780b9754263af178e099b6ae9196e5be27b74161327
MD5 hash:
31b24efbfa923762c06873b962b805f6
SHA1 hash:
87c462350de398333c476e6bdfc8038a6a8fa41c
Detections:
FormBook
Create hunting rule
win_formbook_auto
Create hunting rule
win_formbook_g0
Create hunting rule
win_formbook_w0
Create hunting rule
Formbook
Create hunting rule
Windows_Trojan_Formbook
Create hunting rule
Link:
https://www.unpac.me/results/fdc3b95f-eb69-4b3b-a200-585cea5353c7/
Parent samples :
b13566d9fe407cc22c901a4a624a326999c74ec3e63ee1b2772741e460333c77
c4e4375701cb85ee71bf3182cdabd6ab27ef71c9cc635469f76c85da29f4e102
c6e8b9f58ecf04c30658cddccbb2221d2eda992a51c9f252adc1e1a35b382260
Malware family:
FormBook
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/c4e4375701cb/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/c4e4375701cb85ee71bf3182cdabd6ab27ef71c9cc635469f76c85da29f4e102

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:NET
Create hunting rule
Author:malware-lu
Rule name:pe_imphash
Create hunting rule
Rule name:Skystars_Malware_Imphash
Create hunting rule
Author:Skystars LightDefender
Description:imphash
Rule name:WIN_Sample_Unique_69354b41
Create hunting rule
Author:Marjoriefort
Description:Specimen unique (soumission Bazaar) - strings distinctifs propres au sample
Reference:69354b41e10daf03d3f3af881b32d5c0fec56b1cfe96629fd4c5263413a42854.exe

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/88221/

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