MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 f3c99b21d43e967be5b3e53e70050b9d6dce181fe5415f9825b512850ecb0b52. 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 File information Comments 1

SHA256 hash: f3c99b21d43e967be5b3e53e70050b9d6dce181fe5415f9825b512850ecb0b52
SHA3-384 hash: 96e72126549c4a5dfb7fd2e4f64077bfb436c22c01828200c804dbf788e6462367ceebcdd28716769fd5258e4e9adfa0
SHA1 hash: 8f74a53719a6b2bc596807f1edf53d98109c4a86
MD5 hash: 5b4cde02e2552a6c3d5f4c96e61a9e4b
humanhash: may-jupiter-sink-nine
File name:5b4cde02e2552a6c3d5f4c96e61a9e4b
Download: download sample
Signature Formbook
File size:317'088 bytes
First seen:2023-10-03 19:07:31 UTC
Last seen:2023-10-03 19:35:48 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash 9dda1a1d1f8a1d13ae0297b47046b26e (64 x Formbook, 39 x GuLoader, 22 x RemcosRAT)
ssdeep 6144:LnPdudwDzsIduV5l234RUyxsM/TxFmrmBHzL7jbsTFv2ys15HguJPm8idQQrS:LnPdvsIwV5BUySCxhzL7jbsTwnLHgVdM
Threatray 3 similar samples on MalwareBazaar
TLSH T1ED64126472B4D8B3ED636E715A3F0D7216A8BC39A4B0571B13C3BB157227672CA1E2D0
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 d2e8ecb2b2a2b282 (106 x AgentTesla, 106 x Formbook, 24 x RedLineStealer)
Reporter zbetcheckin
Tags:32 exe FormBook

Intelligence


File Origin
# of uploads :
2
# of downloads :
312
Origin country :
FR FR
Vendor Threat Intelligence
Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Creating a file in the %temp% directory
Creating a window
Creating a process from a recently created file
Launching a process
Sending a custom TCP request
Сreating synchronization primitives
Launching cmd.exe command interpreter
Setting browser functions hooks
Unauthorized injection to a recently created process by context flags manipulation
Unauthorized injection to a system process
Unauthorized injection to a browser process
Gathering data
Verdict:
Likely Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
control lolbin overlay packed remcos shell32 threat virus
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.
Result
Threat name:
FormBook, NSISDropper
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Signature
Antivirus / Scanner detection for submitted sample
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Found evasive API chain (may stop execution after reading information in the PEB, e.g. number of processors)
Found malware configuration
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)
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
Snort IDS alert for network traffic
System process connects to network (likely due to code injection or exploit)
Tries to detect virtualization through RDTSC time measurements
Yara detected FormBook
Yara detected NSISDropper
Behaviour
Behavior Graph:
behaviorgraph top1 signatures2 2 Behavior Graph ID: 1318987 Sample: YISiiML6Uj.exe Startdate: 03/10/2023 Architecture: WINDOWS Score: 100 47 Snort IDS alert for network traffic 2->47 49 Found malware configuration 2->49 51 Malicious sample detected (through community Yara rule) 2->51 53 8 other signatures 2->53 11 YISiiML6Uj.exe 18 2->11         started        process3 file4 31 C:\Users\user\AppData\Local\...\vzhywqyw.exe, PE32 11->31 dropped 14 vzhywqyw.exe 11->14         started        process5 signatures6 63 Multi AV Scanner detection for dropped file 14->63 65 Found evasive API chain (may stop execution after reading information in the PEB, e.g. number of processors) 14->65 67 Maps a DLL or memory area into another process 14->67 69 Tries to detect virtualization through RDTSC time measurements 14->69 17 vzhywqyw.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 4 6 17->20 injected process9 dnsIp10 33 www.docomo-mobileconsulting.com 104.247.81.72, 49737, 80 TEAMINTERNET-CA-ASCA Canada 20->33 35 sarthaksrishticreation.com 119.18.49.69, 49750, 80 PUBLIC-DOMAIN-REGISTRYUS India 20->35 37 16 other IPs or domains 20->37 55 System process connects to network (likely due to code injection or exploit) 20->55 24 help.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       
Threat name:
Win32.Trojan.Generic
Status:
Malicious
First seen:
2023-10-03 14:59:00 UTC
File Type:
PE (Exe)
Extracted files:
3
AV detection:
22 of 23 (95.65%)
Threat level:
  2/5
Result
Malware family:
formbook
Score:
  10/10
Tags:
family:formbook campaign:sy22 rat spyware stealer trojan
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of UnmapMainImage
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Program crash
Suspicious use of SetThreadContext
Executes dropped EXE
Loads dropped DLL
Formbook payload
Formbook
Unpacked files
SH256 hash:
501a2c8b5aa3da894c1bae00e326058801a4e1aef68985754e9911527b3f5161
MD5 hash:
6ec8d7041e934b5201acf3971805d5be
SHA1 hash:
6b9458b1ddce2a4c4eee53fb91de39e9abf05528
SH256 hash:
f3c99b21d43e967be5b3e53e70050b9d6dce181fe5415f9825b512850ecb0b52
MD5 hash:
5b4cde02e2552a6c3d5f4c96e61a9e4b
SHA1 hash:
8f74a53719a6b2bc596807f1edf53d98109c4a86
Please note that we are no longer able to provide a coverage score for Virus Total.

File information


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

Web download

Formbook

Executable exe f3c99b21d43e967be5b3e53e70050b9d6dce181fe5415f9825b512850ecb0b52

(this sample)

  
Delivery method
Distributed via web download

Comments



Avatar
zbet commented on 2023-10-03 19:07:32 UTC

url : hxxp://192.3.95.205/350/processing.exe