MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 df520418cf167ad7a21b89d8042c6fda139fdd32159ebca27d6fc128bf1cbcd3. 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: 13


Intelligence 13 IOCs YARA 19 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: df520418cf167ad7a21b89d8042c6fda139fdd32159ebca27d6fc128bf1cbcd3
SHA3-384 hash: 03ac50d39f8943fd52bb845b5bd030113a638bd5eca34c1e986723a24d4e685ec5073063388340be999cd1b262f42146
SHA1 hash: cfd1e09f4d698aa915f907940ffe10c7ddf01096
MD5 hash: 21ade803b4ef38268131abdd90d5b251
humanhash: uncle-lake-winner-earth
File name:msedge_elf.dll
Download: download sample
Signature Formbook
Create hunting rule
File size:3'156'992 bytes
First seen:2025-12-17 18:37:24 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash 250eb22383f63544859c02259e2d57bf (1 x Formbook)
ssdeep 49152:E28r2DnxQiIa3/4wNwNyqeHQIpjU/qVm5TQ7wqpgc:Qr2GE/4o6yg/
Threatray 2'503 similar samples on MalwareBazaar
TLSH T182E59D15A3900AA5D52BE274CA678733D370B9524731D34F16AADB4E2F33B909B3B721
TrID 66.6% (.EXE) InstallShield setup (43053/19/16)
16.2% (.EXE) Win64 Executable (generic) (10522/11/4)
7.7% (.EXE) Win16 NE executable (generic) (5038/12/1)
3.1% (.EXE) OS/2 Executable (generic) (2029/13)
3.0% (.EXE) Generic Win/DOS Executable (2002/3)
Magika pebin
Reporter cocaman
Tags:dll exe FormBook

Intelligence

File Origin
# of uploads :
1
# of downloads :
115
Origin country :
CH CH
Vendor Threat Intelligence
No detections
Malware family:
n/a
ID:
1
File name:
3511ec4f3fd747e5bea4683553c7066fd15ca59fc41583136338f276776f62ae.zip
Verdict:
Malicious activity
Analysis date:
2025-12-17 18:37:59 UTC
Tags:
auto generic arch-exec
Link:
https://app.any.run/tasks/fe945aaf-5714-469c-93a2-1e1adbbaf3e2

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/45342/
Verdict:
Clean
Score:
99.9%
Link:
https://cyber-fortress.com/docs/result/index.php?id=68ffe63e5de5ca27075306d1
Tags:
n/a
Result
Verdict:
Clean
Maliciousness:

Behaviour
DNS request
Verdict:
Unknown
Threat level:
  2.5/10
Confidence:
100%
Tags:
adaptive-context anti-debug crypto fingerprint masquerade microsoft_visual_cc
Link:
https://www.filescan.io/uploads/6942f89529529c74a2f4d0d4/reports/3f29a076-8f9c-4f7a-9eab-eb491809ccd0/overview
Verdict:
Malicious
Labled as:
Win64/Agent.ECK trojan
Link:
https://www.hybrid-analysis.com/sample/df520418cf167ad7a21b89d8042c6fda139fdd32159ebca27d6fc128bf1cbcd3
Verdict:
Malicious
File Type:
dll x64
First seen:
2025-12-17T15:03:00Z UTC
Last seen:
2025-12-19T05:11:00Z UTC
Hits:
~100
Detections:
Trojan-Spy.Win32.Noon.boyy Trojan-Spy.Noon.HTTP.ServerRequest Trojan.Win32.InversedShelma.sbc Trojan.Win32.Injector.sb Trojan.Win32.Inject.sb PDM:Trojan.Win32.Generic Backdoor.Agent.HTTP.C&C Trojan-Spy.Win32.Noon.sb
Link:
https://opentip.kaspersky.com/df520418cf167ad7a21b89d8042c6fda139fdd32159ebca27d6fc128bf1cbcd3/results?tab=lookup
Verdict:
Unknown
Link:
https://analyze.intezer.com/analyses/e2784342-63ef-4805-9f5a-8526c970c357
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
92 / 100
Link:
https://www.joesandbox.com/analysis/1835149
Signature
Allocates memory in foreign processes
Injects a PE file into a foreign processes
Joe Sandbox ML detected suspicious sample
Maps a DLL or memory area into another process
Multi AV Scanner detection for submitted file
Performs DNS queries to domains with low reputation
Suricata IDS alerts for network traffic
Unusual module load detection (module proxying)
Writes to foreign memory regions
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1835149 Sample: msedge_elf.dll.exe Startdate: 17/12/2025 Architecture: WINDOWS Score: 92 49 www.54819757.xyz 2->49 53 Suricata IDS alerts for network traffic 2->53 55 Multi AV Scanner detection for submitted file 2->55 57 Yara detected FormBook 2->57 59 Joe Sandbox ML detected suspicious sample 2->59 11 loaddll64.exe 1 2->11         started        signatures3 61 Performs DNS queries to domains with low reputation 49->61 process4 process5 13 rundll32.exe 11->13         started        16 cmd.exe 1 11->16         started        18 rundll32.exe 11->18         started        20 24 other processes 11->20 signatures6 75 Writes to foreign memory regions 13->75 77 Allocates memory in foreign processes 13->77 79 Injects a PE file into a foreign processes 13->79 22 ngen.exe 13->22         started        25 rundll32.exe 16->25         started        27 ngen.exe 18->27         started        29 ngen.exe 20->29         started        process7 signatures8 63 Maps a DLL or memory area into another process 22->63 65 Unusual module load detection (module proxying) 22->65 31 p4ZqO1kiZyPN.exe 22->31 injected 67 Writes to foreign memory regions 25->67 69 Allocates memory in foreign processes 25->69 71 Injects a PE file into a foreign processes 25->71 33 ngen.exe 25->33         started        36 M15eZz7J3.exe 27->36 injected 38 H6Ust1WAt2e.exe 29->38 injected process9 signatures10 40 cmdkey.exe 31->40         started        51 Maps a DLL or memory area into another process 33->51 43 oGh6OMU8EsH0W.exe 33->43 injected 45 cmdkey.exe 36->45         started        process11 signatures12 73 Unusual module load detection (module proxying) 40->73 47 cmdkey.exe 43->47         started        process13
Score:
86%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/df520418cf167ad7a21b89d8042c6fda139fdd32159ebca27d6fc128bf1cbcd3
Verdict:
inconclusive
YARA:
5 match(es)
Tags:
Executable PE (Portable Executable) PE File Layout Win 64 Exe x64
Link:
https://app.malva.re/file/21ade803b4ef38268131abdd90d5b251
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/df520418cf167ad7a21b89d8042c6fda139fdd32159ebca27d6fc128bf1cbcd3/
Verdict:
Malicious
Threat:
Family.FORMBOOK
Link:
https://tip.neiki.dev/file/df520418cf167ad7a21b89d8042c6fda139fdd32159ebca27d6fc128bf1cbcd3
Threat name:
Win64.Trojan.Generic
Create hunting rule
Status:
Suspicious
First seen:
2025-12-17 18:38:16 UTC
File Type:
PE+ (Dll)
AV detection:
10 of 23 (43.48%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=35jaiggpcz5npiq3rhmaildp3ijz7xjscwplzit5n7asrpy4xtjq._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
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Formbook
1edf21b9bd2a882923fd14c0febaef2fa5676604dc4a515dbf54e4633c0b8dd2
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a0eccda897494935b1c7ce5193df8a89ea92d033c80152ff7fe9cc8215f67302
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ac1bdadf98761eed39833d096c732ca61ede04535ecced46d1f662f9dab206f6
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b42d8673bc49b85b845318b9b46fe480ce9739075b5607bdfa8404c9d4a4699e
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cadb01c8ef061ba418ccf97bfa624986ae7d5032fb7dd2b86da6f6d7e06dd36e
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dcde5a9fe61b7c32e735373629754ff429eadb1701165c4dcbe0ebd03374615e
Formbook
df520418cf167ad7a21b89d8042c6fda139fdd32159ebca27d6fc128bf1cbcd3
Formbook
error
Formbook
+ 2'493 additional samples on MalwareBazaar
Result
Malware family:
n/a
Score:
  5/10
Tags:
n/a
Link:
https://tria.ge/reports/251217-w95q5adv7a/
Behaviour
Suspicious use of WriteProcessMemory
Program crash
Suspicious use of SetThreadContext
Verdict:
Unknown
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/ddb8e1ee-0742-45e5-a746-a506d8246bd1
Unpacked files
SH256 hash:
df520418cf167ad7a21b89d8042c6fda139fdd32159ebca27d6fc128bf1cbcd3
MD5 hash:
21ade803b4ef38268131abdd90d5b251
SHA1 hash:
cfd1e09f4d698aa915f907940ffe10c7ddf01096
Link:
https://www.unpac.me/results/004b0788-3d33-400c-a252-39e04966fa2d/
Malware family:
FormBook
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/df520418cf16/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/df520418cf167ad7a21b89d8042c6fda139fdd32159ebca27d6fc128bf1cbcd3

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: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__MemoryWorkingSet
Create hunting rule
Author:Fernando Mercês
Description:Anti-debug process memory working set size check
Reference:http://www.gironsec.com/blog/2015/06/anti-debugger-trick-quicky/
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:NET
Create hunting rule
Author:malware-lu
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:ThreadControl__Context
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:TH_Win_ETW_Bypass_2025_CYFARE
Create hunting rule
Author:CYFARE
Description:Windows ETW Bypass Detection Rule - 2025
Reference:https://cyfare.net/

File information

The table below shows additional information about this malware sample such as delivery method and external references.

Malspam

Formbook

zip 3511ec4f3fd747e5bea4683553c7066fd15ca59fc41583136338f276776f62ae

Formbook

Executable exe df520418cf167ad7a21b89d8042c6fda139fdd32159ebca27d6fc128bf1cbcd3

(this sample)

  
Delivery method
Other
  
Dropped by
SHA256 3511ec4f3fd747e5bea4683553c7066fd15ca59fc41583136338f276776f62ae
Cape
Cape
https://www.capesandbox.com/analysis/45342/
  
Dropped by
MD5 ab9589ecd25712db0f9750c94c385770

Comments