MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 50398d4e32037d5b75501a7b6046e13bc46438cfb520ee5bef494a0f29cbb2a8. 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: 14


Intelligence 14 IOCs YARA 7 File information Comments
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SHA256 hash: 50398d4e32037d5b75501a7b6046e13bc46438cfb520ee5bef494a0f29cbb2a8
SHA3-384 hash: c075c28a4479203d358c6cd203900174dfeaafe10bb080c6cb159f44c4e9f00e2ededcbf387bb2cfed2ce29cc15abf22
SHA1 hash: bad48ce864c7068a7aabecc1991220ba70c2741a
MD5 hash: fae4f16aaab45c3783748c0acffbaed9
humanhash: rugby-red-lemon-bulldog
File name:Booking Specification.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:994'816 bytes
First seen:2022-06-21 18:27:39 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'661 x AgentTesla, 19'474 x Formbook, 12'208 x SnakeKeylogger)
ssdeep 12288:hN52iNPf+B85FrMq1zGjOxtR0CyAdgUmjERDtGJkNxwN/7UogQ9jT2oiokF1OK6j:l1B+B85FYq1GOEEj1i4u
TLSH T1E625E89C321871DFD417D675C9681D68E6A0387FA34BC287B027255EAE4CB97EF210B2
TrID 72.5% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
10.4% (.EXE) Win64 Executable (generic) (10523/12/4)
6.5% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
4.4% (.EXE) Win32 Executable (generic) (4505/5/1)
2.0% (.EXE) OS/2 Executable (generic) (2029/13)
File icon (PE):PE icon
dhash icon 6dd2d312dbc8cc49 (94 x Formbook, 5 x AgentTesla)
Reporter James_inthe_box
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
1
# of downloads :
239
Origin country :
n/a
Vendor Threat Intelligence
Detection:
Formbook
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Link:
https://www.capesandbox.com/analysis/282084/
Detection(s):
SecuriteInfo.com.MSIL.Kryptik.WZA.UNOFFICIAL
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Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Creating a window
Sending a custom TCP request
Unauthorized injection to a recently created process
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:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
packed
Link:
https://www.filescan.io/uploads/62b20db9f4dd1ffb77a96e49/reports/6276f573-3c1a-4aa7-9897-cf7f7b3d2c8c/overview
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.
Malware family:
Formbook
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Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/66dbbd24-7a0d-4de5-be6c-cc033e037e6f
Result
Threat name:
FormBook
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Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1017398
Signature
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Injects a PE file into a foreign processes
Machine Learning detection for 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)
Multi AV Scanner detection for submitted file
Queues an APC in another process (thread injection)
Sample uses process hollowing technique
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Tries to detect virtualization through RDTSC time measurements
Uses ipconfig to lookup or modify the Windows network settings
Yara detected AntiVM3
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 649897 Sample: Booking Specification.exe Startdate: 21/06/2022 Architecture: WINDOWS Score: 100 35 www.stake-login.com 2->35 39 Malicious sample detected (through community Yara rule) 2->39 41 Antivirus detection for URL or domain 2->41 43 Multi AV Scanner detection for submitted file 2->43 45 6 other signatures 2->45 11 Booking Specification.exe 3 2->11         started        signatures3 process4 file5 33 C:\Users\...\Booking Specification.exe.log, ASCII 11->33 dropped 55 Injects a PE file into a foreign processes 11->55 15 Booking Specification.exe 11->15         started        18 Booking Specification.exe 11->18         started        signatures6 process7 signatures8 57 Modifies the context of a thread in another process (thread injection) 15->57 59 Maps a DLL or memory area into another process 15->59 61 Sample uses process hollowing technique 15->61 63 Queues an APC in another process (thread injection) 15->63 20 explorer.exe 15->20 injected process9 signatures10 47 Uses ipconfig to lookup or modify the Windows network settings 20->47 23 ipconfig.exe 20->23         started        process11 signatures12 49 Modifies the context of a thread in another process (thread injection) 23->49 51 Maps a DLL or memory area into another process 23->51 53 Tries to detect virtualization through RDTSC time measurements 23->53 26 explorer.exe 1 149 23->26         started        29 cmd.exe 1 23->29         started        process13 dnsIp14 37 192.168.2.1 unknown unknown 26->37 31 conhost.exe 29->31         started        process15
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/50398d4e32037d5b75501a7b6046e13bc46438cfb520ee5bef494a0f29cbb2a8/
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
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Status:
Malicious
First seen:
2022-06-21 04:01:51 UTC
File Type:
PE (.Net Exe)
Extracted files:
24
AV detection:
19 of 26 (73.08%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=ka4y2trsan6vw5kqdj5warxbhpcgiogpwuqo4w7pjffa6kolwkua._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:rsea rat spyware stealer suricata trojan
Link:
https://tria.ge/reports/220621-w4babshfhm/
Behaviour
Suspicious use of FindShellTrayWindow
Suspicious use of SendNotifyMessage
Suspicious use of WriteProcessMemory
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetThreadContext
Deletes itself
Formbook Payload
Formbook
suricata: ET MALWARE FormBook CnC Checkin (GET)
Unpacked files
SH256 hash:
1c1197a3e6b4fc172fb702defd122092e721ba3c271a48c89466121f4771fd9f
MD5 hash:
610f04d8febfa747d32b84a3ac777e81
SHA1 hash:
799bafeb8333ce64674864a89f969c3977152e26
Detections:
win_formbook_g0
Create hunting rule
win_formbook_auto
Create hunting rule
Link:
https://www.unpac.me/results/61102242-47fb-4f39-8905-932f326f54de/
Parent samples :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 hash:
8a21ccfd41c89ae80c846deb18e2d402babe40ac5eeeb4a0308df34e64aa2ec4
MD5 hash:
0aa2a632fd1442dd7ff9583455f0ca2d
SHA1 hash:
b29b8909ff36bff35c344e3211a9ebfa254a4030
Link:
https://www.unpac.me/results/61102242-47fb-4f39-8905-932f326f54de/
SH256 hash:
79823e47436e129def4fba8ee225347a05b7bb27477fb1cc8be6dc9e9ce75696
MD5 hash:
39f524c1ab0eb76dfd79b2852e5e8c39
SHA1 hash:
428018e1701006744e34480b0029982a76d8a57d
Link:
https://www.unpac.me/results/61102242-47fb-4f39-8905-932f326f54de/
SH256 hash:
50398d4e32037d5b75501a7b6046e13bc46438cfb520ee5bef494a0f29cbb2a8
MD5 hash:
fae4f16aaab45c3783748c0acffbaed9
SHA1 hash:
bad48ce864c7068a7aabecc1991220ba70c2741a
Link:
https://www.unpac.me/results/61102242-47fb-4f39-8905-932f326f54de/
Malware family:
FormBook
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/50398d4e3203/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Malicious File
Score:
0.71
Link:
https://yomi.yoroi.company/submissions/50398d4e32037d5b75501a7b6046e13bc46438cfb520ee5bef494a0f29cbb2a8

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:exploit_any_poppopret
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Author:Jeff White [karttoon@gmail.com] @noottrak
Description:Identify POP -> POP -> RET opcodes for quick ROP Gadget creation in target binaries.
Rule name:malware_Formbook_strings
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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:pe_imphash
Create hunting rule
Rule name:Skystars_Malware_Imphash
Create hunting rule
Author:Skystars LightDefender
Description:imphash
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.

  
Delivery method
Other
Cape
Cape
https://www.capesandbox.com/analysis/282084/

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