MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 3cfd81b824673a6ba23d472bd09d5e7610a3346cce6f23956507af5eab63c012. 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 File information Comments 1

SHA256 hash: 3cfd81b824673a6ba23d472bd09d5e7610a3346cce6f23956507af5eab63c012
SHA3-384 hash: eb58e3ea1027fc1b1d821f261e9a63ec82ba663b7ce2b7cb1814ff23c38bb29db8a437dd8918a62f4caae89050fe5b0f
SHA1 hash: f888efab5bfd957947b95877b4c5c73067dad197
MD5 hash: db34b27822c1c7d80e7e59ed743ce22c
humanhash: vegan-music-yankee-michigan
File name:db34b27822c1c7d80e7e59ed743ce22c
Download: download sample
Signature Formbook
File size:263'686 bytes
First seen:2022-12-02 09:34:49 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash ab6770b0a8635b9d92a5838920cfe770 (84 x Formbook, 30 x AgentTesla, 15 x Loki)
ssdeep 6144:QBn1+chufZq/1wTiFDMwMBUvosOPuoXK+qvcAYzy/:g+ciAyeUavOha+nAYI
TLSH T11D44126882E050F7D0635A305DB76336E2BDF200A47A69DF5B624FAF58363C3894E183
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 b2a89c96a2cada72 (2'283 x Formbook, 981 x Loki, 803 x AgentTesla)
Reporter zbetcheckin
Tags:32 exe FormBook

Intelligence


File Origin
# of uploads :
1
# of downloads :
208
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
formbook
ID:
1
File name:
SecuriteInfo.com.Exploit.MathType-Obfs.Gen.25508.5883
Verdict:
Malicious activity
Analysis date:
2022-12-02 05:30:44 UTC
Tags:
opendir exploit cve-2017-11882 loader formbook xloader trojan stealer

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

Behaviour
Creating a file in the %temp% directory
Creating a process from a recently created file
Launching a process
Searching for synchronization primitives
Сreating synchronization primitives
Launching cmd.exe command interpreter
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:
formbook overlay packed shell32.dll
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
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Signature
C2 URLs / IPs found in 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
System process connects to network (likely due to code injection or exploit)
Tries to detect virtualization through RDTSC time measurements
Yara detected FormBook
Behaviour
Behavior Graph:
behaviorgraph top1 signatures2 2 Behavior Graph ID: 759129 Sample: 4ZAZGQdC85.exe Startdate: 02/12/2022 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 3 other signatures 2->53 11 4ZAZGQdC85.exe 19 2->11         started        process3 file4 31 C:\Users\user\AppData\Local\Temp\rzjxgj.exe, PE32 11->31 dropped 14 rzjxgj.exe 11->14         started        process5 signatures6 61 Multi AV Scanner detection for dropped file 14->61 63 Maps a DLL or memory area into another process 14->63 65 Tries to detect virtualization through RDTSC time measurements 14->65 17 rzjxgj.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.abundantproduction.com 160.124.149.34, 49684, 80 POWERLINE-AS-APPOWERLINEDATACENTERHK South Africa 20->33 35 www.blurockindustry.com 20->35 37 blurockindustry.com 34.102.136.180, 49685, 80 GOOGLEUS United States 20->37 55 System process connects to network (likely due to code injection or exploit) 20->55 24 msiexec.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 27 cmd.exe 1 24->27         started        process14 process15 29 conhost.exe 27->29         started       
Threat name:
Win32.Trojan.FormBook
Status:
Malicious
First seen:
2022-12-02 06:33:21 UTC
AV detection:
16 of 41 (39.02%)
Threat level:
  5/5
Verdict:
malicious
Label(s):
formbook
Result
Malware family:
formbook
Score:
  10/10
Tags:
family:formbook campaign:pr28 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
Loads dropped DLL
Executes dropped EXE
Formbook payload
Formbook
Verdict:
Suspicious
Tags:
n/a
YARA:
n/a
Unpacked files
SH256 hash:
f0d1d1a440d0063a5e6e092aa74e2f8e3d130c8ba64bf69c7d0a3e51156c5498
MD5 hash:
145a37060514d66fc3ab42fddc44efbe
SHA1 hash:
17df10f27170632ee9c4641abf7278e55be4d001
Detections:
FormBook win_formbook_auto win_formbook_g0
SH256 hash:
292de2987a1b943bbfec1025d9bb571a8c8aa59dd0662565147952f8a2d3dc06
MD5 hash:
9d249d3a0088dd3e3b7cdc0068bcb9dc
SHA1 hash:
1a3e0934278243d4e7c82f69f77271426c18d23d
SH256 hash:
3cfd81b824673a6ba23d472bd09d5e7610a3346cce6f23956507af5eab63c012
MD5 hash:
db34b27822c1c7d80e7e59ed743ce22c
SHA1 hash:
f888efab5bfd957947b95877b4c5c73067dad197
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 3cfd81b824673a6ba23d472bd09d5e7610a3346cce6f23956507af5eab63c012

(this sample)

  
Delivery method
Distributed via web download

Comments



Avatar
zbet commented on 2022-12-02 09:34:58 UTC

url : hxxp://194.49.94.97/oso/fbhans.exe