MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 c81c83ab1925106c70d6393edc0fcc117a4cb12ac96383ad28ceabe54c12fb4f. 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: 17


Intelligence 17 IOCs YARA 7 File information Comments 1
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SHA256 hash: c81c83ab1925106c70d6393edc0fcc117a4cb12ac96383ad28ceabe54c12fb4f
SHA3-384 hash: 71fe76b65b75d47dc4521bed92ec5d552f4ce59e78fbb4091888fe0527b44c0eafb431d7079df7ce8d1ccfa098329a72
SHA1 hash: 1c764abab45c5d786eb395621f798e05fe04b4d1
MD5 hash: bdfb2c5a346d6684824b78499b36b88d
humanhash: romeo-pip-cold-fanta
File name:bdfb2c5a346d6684824b78499b36b88d
Download: download sample
Signature Formbook
Create hunting rule
File size:297'180 bytes
First seen:2023-03-15 16:32:07 UTC
Last seen:2023-03-16 21:32:37 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash 61259b55b8912888e90f516ca08dc514 (1'059 x Formbook, 741 x AgentTesla, 427 x GuLoader)
ssdeep 6144:gYa6UBDpK8wWcKzqFLK5qfHiPyG+91dL7es3hV1yU+z:gYKBjwWc6fuHGy11dDVx+z
Threatray 2'458 similar samples on MalwareBazaar
TLSH T16F54026432A5D87BD46306706EB5E27E9EA6BE025C548B0BF7C4BF8F3E31142854EB14
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 e0aaaa2b0303aad0 (34 x Formbook, 21 x AveMariaRAT, 18 x AgentTesla)
Reporter zbetcheckin
Tags:32 exe FormBook

Intelligence

File Origin
# of uploads :
2
# of downloads :
241
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
formbook
Create hunting rule
ID:
1
File name:
PI 2303002.doc
Verdict:
Malicious activity
Analysis date:
2023-03-15 15:58:46 UTC
Tags:
trojan exploit cve-2017-11882 loader formbook xloader
Link:
https://app.any.run/tasks/238468e4-3904-4d7e-9161-222e36224611

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
Formbook
Create hunting rule
Link:
https://www.capesandbox.com/analysis/374623/
Detection(s):
SecuriteInfo.com.Variant.Babar.172047.14284.23853.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a file in the %temp% directory
Creating a window
Creating a process from a recently created file
Searching for synchronization primitives
Launching a process
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
Result
Malware family:
n/a
Score:
  5/10
Tags:
n/a
Link:
https://dragonfly.certego.net/analysis/73298/overview
Behaviour
MalwareBazaar
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
babar comodo formbook nemesis overlay packed remcos shell32.dll
Link:
https://www.filescan.io/uploads/6411f33f589154fc977db9ce/reports/a6becd6f-ce97-4728-9f1e-4fd8a76733ce/overview
Verdict:
Malicious
Labled as:
Win/malicious_confidence_100%
Link:
https://www.hybrid-analysis.com/sample/c81c83ab1925106c70d6393edc0fcc117a4cb12ac96383ad28ceabe54c12fb4f
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
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/23277814-813c-432d-b8a2-06a6ec8c2c40
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1194377
Signature
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)
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
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 827274 Sample: Qt8DIGUxKa.exe Startdate: 15/03/2023 Architecture: WINDOWS Score: 100 47 Snort IDS alert for network traffic 2->47 49 Malicious sample detected (through community Yara rule) 2->49 51 Antivirus detection for URL or domain 2->51 53 4 other signatures 2->53 11 Qt8DIGUxKa.exe 19 2->11         started        process3 file4 31 C:\Users\user\AppData\...\jfobqpadsl.exe, PE32 11->31 dropped 14 jfobqpadsl.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 jfobqpadsl.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 3 6 17->20 injected process9 dnsIp10 33 nikol-beauty.ru 31.184.217.9, 49704, 80 SELECTELRU Russian Federation 20->33 35 i-3-test.com 192.0.78.24, 49705, 80 AUTOMATTICUS United States 20->35 37 4 other IPs or domains 20->37 55 System process connects to network (likely due to code injection or exploit) 20->55 24 raserver.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/c81c83ab1925106c70d6393edc0fcc117a4cb12ac96383ad28ceabe54c12fb4f/
Threat name:
Win32.Trojan.FormBook
Create hunting rule
Status:
Malicious
First seen:
2023-03-15 10:47:58 UTC
File Type:
PE (Exe)
Extracted files:
3
AV detection:
25 of 39 (64.10%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=zaoihkyzeuigy4gwhe7nyd6mcf5ezmjkzfryhljiz2v6ktas7nhq._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Similar samples:
142f8b22d894f1fee4c501acbc425edec276004d5d30ab7572cdfab85e89ad12
Formbook
1898f22fac7a609e186050d787f60be2d8427ad8d24fa66f44c0ddcc17cb72d5
Formbook
1a82b5f2c6d3897569544939dfae30457d05924c8811f009d0cd1540319ea90c
Formbook
3a5125b535a9d3aec7608c040173cea1e3c12cb855ec5bad90847406022dfe98
Formbook
3af2c0904f3729e0408f6479f4222d5fbcf695f2b5cd32e8737e8690661bb18b
Formbook
60fe13a26cde812037097d97acc94f5ab707e86e09744fad56f07afd324401bf
Formbook
b0302231ae277b08e383cef527b093307edf552a1777b5c9a088e2e1c61ad6fe
Formbook
f51bdb3c0026435904048abffb411be8b57143de59d0e66a3e2dfa3f2e5692ad
Formbook
f7bb2d35300a95c164089832c13410023d2293390130109ae3693fd0d05a3df8
Formbook
+ 2'448 additional samples on MalwareBazaar
Result
Malware family:
formbook
Create hunting rule
Score:
  10/10
Tags:
family:formbook campaign:s26y rat spyware stealer trojan
Link:
https://tria.ge/reports/230315-t2hkhsgd9s/
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
Executes dropped EXE
Loads dropped DLL
Formbook payload
Formbook
Unpacked files
SH256 hash:
b0a63554e2f140f773624fb239ff6094644b54f587993024e4912572b7e066f3
MD5 hash:
ca88f5d732faa0923adb0e22434fb16f
SHA1 hash:
93e294366c262222640511817dee4cabe0f0ad9b
Link:
https://www.unpac.me/results/a1fd568d-cc63-401d-bba7-3f4f25960529/
SH256 hash:
c81c83ab1925106c70d6393edc0fcc117a4cb12ac96383ad28ceabe54c12fb4f
MD5 hash:
bdfb2c5a346d6684824b78499b36b88d
SHA1 hash:
1c764abab45c5d786eb395621f798e05fe04b4d1
Link:
https://www.unpac.me/results/a1fd568d-cc63-401d-bba7-3f4f25960529/
Malware family:
FormBook
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/c81c83ab1925/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/c81c83ab1925106c70d6393edc0fcc117a4cb12ac96383ad28ceabe54c12fb4f

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:meth_get_eip
Create hunting rule
Author:Willi Ballenthin
Rule name:meth_stackstrings
Create hunting rule
Author:Willi Ballenthin
Rule name:shellcode
Create hunting rule
Author:nex
Description:Matched shellcode byte patterns
Rule name:Windows_Trojan_Formbook
Create hunting rule
Author:@malgamy12
Rule name:Windows_Trojan_Formbook_1112e116
Create hunting rule
Author:Elastic Security
Rule name:win_formbook_auto
Create hunting rule
Author:Felix Bilstein - yara-signator at cocacoding dot com
Description:Detects win.formbook.
Rule name:win_formbook_w0
Create hunting rule
Author:@malgamy12

File information

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

Web download

Formbook

Executable exe c81c83ab1925106c70d6393edc0fcc117a4cb12ac96383ad28ceabe54c12fb4f

(this sample)

  
Delivery method
Distributed via web download
  
URLhaus
https://urlhaus.abuse.ch/url/2572580/
Cape
Cape
https://www.capesandbox.com/analysis/374623/

Comments


Avatar
zbet commented on 2023-03-15 16:32:14 UTC

url : hxxp://jsrmach.com/wp-admin/parmashdy3.1.exe