MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 817de551d33841a6a6d81e99b4ed25682e796857b694cec79daa45afdb5cede8. 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: 817de551d33841a6a6d81e99b4ed25682e796857b694cec79daa45afdb5cede8
SHA3-384 hash: 44d8c7f2cb939ce2ea468287bb8c7881755e58645cf9cc7feffcaf4215f07312dcb7ed0a7ad0ab44693d926ebc640fbc
SHA1 hash: 10c5bc6d9ecf8700e5f4232b76b90d3bde3f988f
MD5 hash: ed76a1e277b57c744ce565d3eb88ac4e
humanhash: fillet-victor-fifteen-hotel
File name:ed76a1e277b57c744ce565d3eb88ac4e.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:1'392'921 bytes
First seen:2022-10-26 10:10:32 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash fcf1390e9ce472c7270447fc5c61a0c1 (863 x DCRat, 118 x NanoCore, 94 x njrat)
ssdeep 24576:7AOcZX4c2iXzsXBK5+i3FoW+yJDrS21W4JUtij5HHeg/cbGOSMII8:dazaBK5b3FofyNrJUti5HdYGOSMX8
Threatray 16'424 similar samples on MalwareBazaar
TLSH T1E4551212B7E6C472D4B21A31993777252D793D305E74CA1FA3E0696CDA322813229BF7
TrID 91.0% (.EXE) WinRAR Self Extracting archive (4.x-5.x) (265042/9/39)
3.6% (.EXE) Win64 Executable (generic) (10523/12/4)
1.7% (.EXE) Win16 NE executable (generic) (5038/12/1)
1.5% (.EXE) Win32 Executable (generic) (4505/5/1)
0.6% (.EXE) OS/2 Executable (generic) (2029/13)
File icon (PE):PE icon
dhash icon 9ee2e8e8d8c8e28e (5 x Formbook, 1 x RemcosRAT)
Reporter abuse_ch
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
1
# of downloads :
221
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
formbook
Create hunting rule
ID:
1
File name:
b99df40dde85ab1824f89e8a5fbd14b3
Verdict:
Malicious activity
Analysis date:
2022-10-26 09:42:02 UTC
Tags:
macros trojan opendir exploit cve-2017-11882 loader formbook stealer
Link:
https://app.any.run/tasks/3941e9a1-c51d-4676-bee4-6b6a3683ca81

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/324326/
Detection(s):
Win.Dropper.Nanocore-9974287-0
Create hunting rule

Win.Dropper.Nanocore-9975167-0
Create hunting rule

Win.Dropper.Nanocore-9975168-0
Create hunting rule

SecuriteInfo.com.Gen.Variant.Johnnie.221809.751.14920.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a file in the %temp% subdirectories
Enabling the 'hidden' option for files in the %temp% directory
Creating a process from a recently created file
Creating a file
Adding an access-denied ACE
Launching a process
DNS request
Sending an HTTP GET request
Creating a window
Searching for the window
Сreating synchronization primitives
Searching for synchronization primitives
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Unauthorized injection to a recently created process
Unauthorized injection to a recently created process by context flags manipulation
Unauthorized injection to a system process
Result
Malware family:
n/a
Score:
  6/10
Tags:
n/a
Link:
https://dragonfly.certego.net/analysis/45605/overview
Behaviour
MalwareBazaar
MeasuringTime
EvasionQueryPerformanceCounter
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/37215abb-312b-4e4b-8b5d-44fe0074a085
Result
Threat name:
Unknown
Detection:
malicious
Classification:
evad
Score:
60 / 100
Link:
https://www.joesandbox.com/analysis/1098295
Signature
Multi AV Scanner detection for dropped file
Writes to foreign memory regions
Yara detected AntiVM autoit script
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 730947 Sample: Bz1vZpU20D.exe Startdate: 26/10/2022 Architecture: WINDOWS Score: 60 28 Yara detected AntiVM autoit script 2->28 9 Bz1vZpU20D.exe 3 89 2->9         started        process3 file4 24 C:\Users\user\AppData\Local\...\shmdkevv.exe, PE32 9->24 dropped 12 wscript.exe 1 9->12         started        process5 process6 14 shmdkevv.exe 1 3 12->14         started        file7 26 C:\Users\user\AppData\Local\...\RegSvcs.exe, PE32 14->26 dropped 30 Multi AV Scanner detection for dropped file 14->30 32 Writes to foreign memory regions 14->32 18 RegSvcs.exe 14->18         started        20 RegSvcs.exe 14->20         started        signatures8 process9 process10 22 WerFault.exe 18->22         started       
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/817de551d33841a6a6d81e99b4ed25682e796857b694cec79daa45afdb5cede8/
Threat name:
Win32.Trojan.Generic
Create hunting rule
Status:
Suspicious
First seen:
2022-10-26 11:34:59 UTC
File Type:
PE (Exe)
Extracted files:
215
AV detection:
22 of 25 (88.00%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=qf66kuothba2njwyd2m3j3jfnaxhs2cxw2km5r45vjc27w245xua._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Similar samples:
4c5f93d8e4ad69e493366b4bbdd56b7e9b39ad3d25913162a050a68ea9206b50
Formbook
53304618643cdc79b032becca67d8f5b29e7202ec25e7bb724ce712a03ec6592
Formbook
67dfdca1a2d42035d8ef9bde053531051793e2f13e30b8f1fe0a81fdd52e99fb
Formbook
b1f692dd52aae8317db7cfd262a4bcc053cf721fc7a00bf66f4acc7cb5cc6cbc
Formbook
bbb16ff7e472adf4acdcf9576a2977b930f36622848b2f0c3e954f6916a273c9
Formbook
fed743ba97ee8b48a3925816de1b2665d2a73bbf3bc75083fb9ade2855afc0ce
Formbook
+ 16'414 additional samples on MalwareBazaar
Result
Malware family:
formbook
Create hunting rule
Score:
  10/10
Tags:
family:formbook campaign:ubpr persistence rat spyware stealer trojan
Link:
https://tria.ge/reports/221026-l7zf8afddn/
Behaviour
Modifies Internet Explorer settings
Modifies registry class
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of FindShellTrayWindow
Suspicious use of SendNotifyMessage
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Program crash
Suspicious use of SetThreadContext
Adds Run key to start application
Checks computer location settings
Loads dropped DLL
Executes dropped EXE
Formbook
Verdict:
Suspicious
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/bcae219d-62f8-491b-9070-b9f0041b214e
Unpacked files
SH256 hash:
8acb565b34040b60b5bc01cbf3e25f4a2efd1d3b6033ac8ae5f57a23537aeef0
MD5 hash:
e1304571e811731588bc246eebbf41f6
SHA1 hash:
ecd998eaac1a968a6c09c4b851fcef1ab6b58856
Detections:
XLoader
Create hunting rule
win_formbook_auto
Create hunting rule
win_formbook_g0
Create hunting rule
Link:
https://www.unpac.me/results/3813a8e8-d78b-46e9-950f-51a97fe80913/
Parent samples :
53304618643cdc79b032becca67d8f5b29e7202ec25e7bb724ce712a03ec6592
fed743ba97ee8b48a3925816de1b2665d2a73bbf3bc75083fb9ade2855afc0ce
817de551d33841a6a6d81e99b4ed25682e796857b694cec79daa45afdb5cede8
af29f1801cb7159de48605410405ecf431646f72d43f739b80822bdab747da9d
335ae169f2389d9434a5b74ac0876d506dc1fe2ae4f8174be8a4ff06f409952b
a52d0bc31a250c5dd5c84c75fca9b965955297d20f582d79849c17fb59c4c04f
f8dd72e26f36b759975caec134a2ebe40acb84599226f4b880b631d572afcf43
660eb5f2811753c24ecbd5c0e08c68d83d7eca1b2827ed90e2a5189ed61f3a5b
SH256 hash:
a9b9dd5b3026334533297a592465c4b85d04fc64bed66a7ac8aaf7d91341e40a
MD5 hash:
e56e615404ddfc441c20857a11d7583c
SHA1 hash:
0e7a639fc705523faf113cec3ae5fe87af039859
Link:
https://www.unpac.me/results/3813a8e8-d78b-46e9-950f-51a97fe80913/
SH256 hash:
0f7b7059a9f36f2bedd5639616356308b92aea240218fcac7a83c68014aafe43
MD5 hash:
45156ca4303206047e95a8ecb71aceb3
SHA1 hash:
cb58172c9c0030eab86c108ca6c93693b223530d
Link:
https://www.unpac.me/results/3813a8e8-d78b-46e9-950f-51a97fe80913/
SH256 hash:
817de551d33841a6a6d81e99b4ed25682e796857b694cec79daa45afdb5cede8
MD5 hash:
ed76a1e277b57c744ce565d3eb88ac4e
SHA1 hash:
10c5bc6d9ecf8700e5f4232b76b90d3bde3f988f
Link:
https://www.unpac.me/results/3813a8e8-d78b-46e9-950f-51a97fe80913/
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/817de551d338/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/817de551d33841a6a6d81e99b4ed25682e796857b694cec79daa45afdb5cede8

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:malware_Formbook_strings
Create hunting rule
Author:JPCERT/CC Incident Response Group
Description:detect Formbook in memory
Reference:internal research
Rule name:meth_get_eip
Create hunting rule
Author:Willi Ballenthin
Rule name:meth_stackstrings
Create hunting rule
Author:Willi Ballenthin
Rule name:pdb_YARAify
Create hunting rule
Author:@wowabiy314
Description:PDB
Rule name:sfx_pdb
Create hunting rule
Author:@razvialex
Description:Detect interesting files containing sfx with pdb paths.
Rule name:sfx_pdb_winrar_restrict
Create hunting rule
Author:@razvialex
Description:Detect interesting files containing sfx with pdb paths.
Rule name:Windows_Trojan_Formbook_1112e116
Create hunting rule
Author:Elastic Security
Rule name:win_formbook_auto
Create hunting rule
Author:Felix Bilstein - yara-signator at cocacoding dot com
Description:Detects win.formbook.

File information

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

Web download

Formbook

Executable exe 817de551d33841a6a6d81e99b4ed25682e796857b694cec79daa45afdb5cede8

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/2384196/
  
Delivery method
Distributed via web download
Cape
Cape
https://www.capesandbox.com/analysis/324326/

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