MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 e2682ee08233df5afc90d9295165ffed0373e4f34278d99d5a30622c2577639b. 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: 12


Intelligence 12 IOCs YARA 3 File information Comments

SHA256 hash: e2682ee08233df5afc90d9295165ffed0373e4f34278d99d5a30622c2577639b
SHA3-384 hash: 044a467d6ea60529654511bbbad6c524fe10f1d289797dc787f18fea27fd19c2634691f2ec268d234e780122e5f55066
SHA1 hash: 942b008ad44b47cc270954d77ea4a93d618e9c8a
MD5 hash: 45275047a822f053e9cd85f0c7b3a29e
humanhash: kentucky-robert-bluebird-missouri
File name:Besjuju.exe
Download: download sample
Signature Formbook
File size:301'180 bytes
First seen:2021-11-22 14:16:27 UTC
Last seen:2021-11-22 15:49:38 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash 7fa974366048f9c551ef45714595665e (946 x Formbook, 398 x Loki, 261 x AgentTesla)
ssdeep 6144:rGiWgRYWCNVw3i7PrAoqWmbOnbH9MWqY2oQ7ynZCf3/HE:KgRxCNVw3irM9dbKb9MWqYpQQC3/HE
Threatray 11'477 similar samples on MalwareBazaar
TLSH T1F954235FB5C987B3C291447704B793B2D7FB09E810A24C1BFB643EBA3D32811AB46965
File icon (PE):PE icon
dhash icon b2a89c96a2cada72 (2'283 x Formbook, 981 x Loki, 803 x AgentTesla)
Reporter James_inthe_box
Tags:exe FormBook

Intelligence


File Origin
# of uploads :
2
# of downloads :
121
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
Besjuju.exe
Verdict:
Malicious activity
Analysis date:
2021-11-22 20:35:35 UTC
Tags:
installer trojan formbook stealer

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Gathering data
Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Creating a file in the %temp% directory
Creating a file
Unauthorized injection to a recently created process
DNS request
Launching a process
Searching for synchronization primitives
Сreating synchronization primitives
Launching cmd.exe command interpreter
Reading critical registry keys
Sending a custom TCP request
Setting browser functions hooks
Unauthorized injection to a system process
Unauthorized injection to a browser process
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
75%
Tags:
overlay packed
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:
Generic Malware
Verdict:
Malicious
Result
Threat name:
FormBook
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Signature
C2 URLs / IPs found in malware configuration
Found malware configuration
Injects a PE file into a foreign processes
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 dropped file
Multi AV Scanner detection for submitted file
Queues an APC in another process (thread injection)
Sample uses process hollowing technique
Self deletion via cmd delete
Tries to detect virtualization through RDTSC time measurements
Yara detected FormBook
Behaviour
Behavior Graph:
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 526576 Sample: Besjuju.exe Startdate: 22/11/2021 Architecture: WINDOWS Score: 100 35 www.formashare.com 2->35 37 www.superrarerocks.com 2->37 39 webredir.vip.gandi.net 2->39 41 Found malware configuration 2->41 43 Malicious sample detected (through community Yara rule) 2->43 45 Multi AV Scanner detection for dropped file 2->45 47 3 other signatures 2->47 11 Besjuju.exe 17 2->11         started        signatures3 process4 file5 33 C:\Users\user\AppData\...\urwtufszji.dll, PE32 11->33 dropped 57 Tries to detect virtualization through RDTSC time measurements 11->57 59 Injects a PE file into a foreign processes 11->59 15 Besjuju.exe 11->15         started        signatures6 process7 signatures8 61 Modifies the context of a thread in another process (thread injection) 15->61 63 Maps a DLL or memory area into another process 15->63 65 Sample uses process hollowing technique 15->65 67 Queues an APC in another process (thread injection) 15->67 18 explorer.exe 15->18 injected process9 process10 20 mstsc.exe 18->20         started        23 autochk.exe 18->23         started        25 autochk.exe 18->25         started        signatures11 49 Self deletion via cmd delete 20->49 51 Modifies the context of a thread in another process (thread injection) 20->51 53 Maps a DLL or memory area into another process 20->53 55 Tries to detect virtualization through RDTSC time measurements 20->55 27 cmd.exe 1 20->27         started        29 explorer.exe 3 146 20->29         started        process12 process13 31 conhost.exe 27->31         started       
Threat name:
Win32.Trojan.InjectorX
Status:
Malicious
First seen:
2021-11-17 12:51:40 UTC
File Type:
PE (Exe)
Extracted files:
3
AV detection:
22 of 45 (48.89%)
Threat level:
  5/5
Result
Malware family:
formbook
Score:
  10/10
Tags:
family:formbook campaign:j1u6 rat spyware stealer trojan
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
Deletes itself
Loads dropped DLL
Formbook Payload
Formbook
Malware Config
C2 Extraction:
http://www.goldenentnefetis.com/j1u6/
Unpacked files
SH256 hash:
e2682ee08233df5afc90d9295165ffed0373e4f34278d99d5a30622c2577639b
MD5 hash:
45275047a822f053e9cd85f0c7b3a29e
SHA1 hash:
942b008ad44b47cc270954d77ea4a93d618e9c8a
Malware family:
FormBook
Verdict:
Malicious
Please note that we are no longer able to provide a coverage score for Virus Total.

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:Formbook
Author:JPCERT/CC Incident Response Group
Description:detect Formbook in memory
Reference:internal research
Rule name:INDICATOR_SUSPICIOUS_Stomped_PECompilation_Timestamp_InTheFuture
Author:ditekSHen
Description:Detect executables with stomped PE compilation timestamp that is greater than local current time
Rule name:win_formbook_auto
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.

Comments