MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 03315fc089295a2ff5733402c9a928e0fa0c26c3d67dd3610ea121845bde4f1f. 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 2 File information Comments
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SHA256 hash: 03315fc089295a2ff5733402c9a928e0fa0c26c3d67dd3610ea121845bde4f1f
SHA3-384 hash: b796f8a2c82ecf9bd752d467b6fae6b0fc2136ebb619376a463702c6fe0c752e47eb7adece2e518a8ba1bc0035be474c
SHA1 hash: d87c2d5d76317528445c488d57779050017a3871
MD5 hash: 9bf792bae85f4bb7cc07795a5b1d763d
humanhash: leopard-blue-artist-three
File name:dekont.pdf.exe
Download: download sample
Signature Formbook
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File size:443'453 bytes
First seen:2023-01-11 10:24:36 UTC
Last seen:2023-01-11 11:34:14 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash 61259b55b8912888e90f516ca08dc514 (1'059 x Formbook, 741 x AgentTesla, 427 x GuLoader)
ssdeep 6144:oYa6JsLSAKaE4OX0lVkchStFIcenxMFVdhV3G6smnYyAxd:oYYBKaEVX0lmcheunCFVdhVN5niX
TLSH T13C94D190F910C86AC6C923755C20E7D95AB91E586D70C14FE3703E6B3F7C6A3AD06B86
TrID 47.3% (.EXE) Win32 Executable MS Visual C++ (generic) (31206/45/13)
15.9% (.EXE) Win64 Executable (generic) (10523/12/4)
9.9% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
7.6% (.EXE) Win16 NE executable (generic) (5038/12/1)
6.8% (.EXE) Win32 Executable (generic) (4505/5/1)
File icon (PE):PE icon
dhash icon 00d4e8d4dce8d400 (1 x Formbook)
Reporter lowmal3
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
2
# of downloads :
188
Origin country :
DE DE
Vendor Threat Intelligence
Malware family:
formbook
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ID:
1
File name:
dekont.pdf.exe
Verdict:
Malicious activity
Analysis date:
2023-01-11 10:29:02 UTC
Tags:
formbook xloader trojan stealer
Link:
https://app.any.run/tasks/42f49556-ff2a-4985-b5f0-42d29430db64

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/351893/
Detection(s):
SecuriteInfo.com.Trojan.NSISX.Spy.Gen.24.14379.22711.UNOFFICIAL
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Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a file in the %temp% directory
Creating a window
Creating a process from a recently created file
Launching a process
Сreating synchronization primitives
Launching cmd.exe command interpreter
Sending a custom TCP request
Searching for synchronization primitives
Reading critical registry keys
Setting browser functions hooks
Unauthorized injection to a recently created process
Unauthorized injection to a recently created process by context flags manipulation
Unauthorized injection to a system process
Unauthorized injection to a browser process
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
overlay packed shell32.dll
Link:
https://www.filescan.io/uploads/63be8e7fdde391056ac1e783/reports/9a08771e-f13f-42da-b135-0c4624c33fe4/overview
Malware family:
Formbook
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Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/9c026348-b048-4f85-a25f-78bfa85f4c5d
Result
Threat name:
FormBook
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Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1149509
Signature
C2 URLs / IPs found in malware configuration
Contains functionality to detect sleep reduction / modifications
Initial sample is a PE file and has a suspicious name
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 dropped file
Multi AV Scanner detection for submitted file
Queues an APC in another process (thread injection)
Sample uses process hollowing technique
System process connects to network (likely due to code injection or exploit)
Tries to detect virtualization through RDTSC time measurements
Uses an obfuscated file name to hide its real file extension (double extension)
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 782241 Sample: dekont.pdf.exe Startdate: 11/01/2023 Architecture: WINDOWS Score: 100 47 Malicious sample detected (through community Yara rule) 2->47 49 Multi AV Scanner detection for submitted file 2->49 51 Yara detected FormBook 2->51 53 4 other signatures 2->53 11 dekont.pdf.exe 19 2->11         started        process3 file4 31 C:\Users\user\AppData\...\tcykuvwkdz.exe, PE32 11->31 dropped 14 tcykuvwkdz.exe 11->14         started        process5 signatures6 63 Multi AV Scanner detection for dropped file 14->63 65 Maps a DLL or memory area into another process 14->65 67 Tries to detect virtualization through RDTSC time measurements 14->67 69 Contains functionality to detect sleep reduction / modifications 14->69 17 tcykuvwkdz.exe 14->17         started        process7 signatures8 39 Modifies the context of a thread in another process (thread injection) 17->39 41 Maps a DLL or memory area into another process 17->41 43 Sample uses process hollowing technique 17->43 45 Queues an APC in another process (thread injection) 17->45 20 explorer.exe 17->20 injected process9 dnsIp10 33 www.fashionclick.boutique 217.160.0.107, 49700, 80 ONEANDONE-ASBrauerstrasse48DE Germany 20->33 35 www.aftonfarmhouse.com 20->35 37 aftonfarmhouse.com 34.102.136.180, 49699, 80 GOOGLEUS United States 20->37 55 System process connects to network (likely due to code injection or exploit) 20->55 24 explorer.exe 20->24         started        signatures11 process12 signatures13 57 Modifies the context of a thread in another process (thread injection) 24->57 59 Maps a DLL or memory area into another process 24->59 61 Tries to detect virtualization through RDTSC time measurements 24->61 27 cmd.exe 1 24->27         started        process14 process15 29 conhost.exe 27->29         started       
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/03315fc089295a2ff5733402c9a928e0fa0c26c3d67dd3610ea121845bde4f1f/
Threat name:
Win32.Trojan.Nsisx
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Status:
Malicious
First seen:
2023-01-11 09:54:35 UTC
File Type:
PE (Exe)
Extracted files:
3
AV detection:
11 of 41 (26.83%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=amyv7qejffnc75ltgqbmtkji4d5ayjwd2z65gyioueqyiw66j4pq._file
Verdict:
malicious
Label(s):
formbook
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Result
Malware family:
formbook
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Score:
  10/10
Tags:
family:formbook campaign:b21g rat spyware stealer trojan
Link:
https://tria.ge/reports/230111-mfylaaff8y/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of FindShellTrayWindow
Suspicious use of SendNotifyMessage
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Suspicious use of SetThreadContext
Loads dropped DLL
Executes dropped EXE
Formbook payload
Formbook
Verdict:
Suspicious
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/5b565187-9c4c-4b53-856b-0ab0b568140c
Unpacked files
SH256 hash:
4deef53f2b385de278a2dd0b554cedf346104b8486779d003d77d9232415c916
MD5 hash:
da97cc753e6eda2f3db20f16e9d876bf
SHA1 hash:
1fb9e83ed97ec39358add29095c3df773e314773
Detections:
FormBook
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win_formbook_auto
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win_formbook_g0
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Link:
https://www.unpac.me/results/d17303e2-3f10-49da-a8a7-3cbe5119d964/
Parent samples :
03803da6cde700f85ca5df330c3fcbad16d590d4921a60cc831c5f636e20916a
be9c97f837293aea20541bc79acef3515ddffa81fb6e2306d9f0dcf26b63f7f5
ed2f75525575b5e42807ad0c42f3da38b75f84205eef6e4dffbd799fe0bb24e8
5b6a42756dca06a97d71a5ea64c1573d1445500fd0cfc16fba851b555908695c
62561bac40812897c76c0036a3bdb5c645e4de95e96caa0443e52d2b33d320e7
03315fc089295a2ff5733402c9a928e0fa0c26c3d67dd3610ea121845bde4f1f
SH256 hash:
3ecb657cf81ced8351561f037cf09728a59afa2e144dc365b04f4ae558756912
MD5 hash:
f435caa8663d177a0c1262945c7fd900
SHA1 hash:
19ce19b1c55f11c1e99fecff9013468ce3a0ef15
Link:
https://www.unpac.me/results/d17303e2-3f10-49da-a8a7-3cbe5119d964/
SH256 hash:
03315fc089295a2ff5733402c9a928e0fa0c26c3d67dd3610ea121845bde4f1f
MD5 hash:
9bf792bae85f4bb7cc07795a5b1d763d
SHA1 hash:
d87c2d5d76317528445c488d57779050017a3871
Link:
https://www.unpac.me/results/d17303e2-3f10-49da-a8a7-3cbe5119d964/
Malware family:
XLoader
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/03315fc08929/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/03315fc089295a2ff5733402c9a928e0fa0c26c3d67dd3610ea121845bde4f1f

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:crime_win32_ransom_avaddon_1
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Author:@VK_Intel
Description:Detects Avaddon ransomware
Reference:https://twitter.com/VK_Intel/status/1300944441390370819
Rule name:meth_get_eip
Create hunting rule
Author:Willi Ballenthin

File information

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

Malspam

Formbook

Executable exe 03315fc089295a2ff5733402c9a928e0fa0c26c3d67dd3610ea121845bde4f1f

(this sample)

  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/351893/

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