MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 4071a5ec0cb3c1c0c8b0413d179c05476a2ea21ea182b9cc2251f77d3a991801. 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: 13


Intelligence 13 IOCs YARA 7 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 4071a5ec0cb3c1c0c8b0413d179c05476a2ea21ea182b9cc2251f77d3a991801
SHA3-384 hash: fb7ddfe862587d43d4c718ab649d32fd8eb56fc1e68ebce54841d21a1efd4a76853699c5bc5d55e52dc4b1d2cf92f610
SHA1 hash: 31007922516b91af98561d770dc59dabe21928b3
MD5 hash: 989568146d2554c4042ef2cf89686c73
humanhash: single-sodium-pennsylvania-fifteen
File name:989568146d2554c4042ef2cf89686c73.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:242'176 bytes
First seen:2022-08-30 17:52:25 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'652 x AgentTesla, 19'463 x Formbook, 12'204 x SnakeKeylogger)
ssdeep 3072:Wc7yX5dXc/rjZEj9WT4/PWSRBJjWs7ZMCfldMW/3ewyEyQJEC3xKWZp2SywR:WRv6Y9Wk/P9RBJjr8A+exKRfw
TLSH T1F5343A22BBC89527E29F57FAC1E7A69AD7F490A0E72EE7CF1C0050E81901361F469747
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 70e4b2ada8d2e071 (1 x Formbook, 1 x Babadeda)
Reporter abuse_ch
Tags:exe FormBook


Avatar
abuse_ch
Formbook payload URL:
http://37.139.129.142/htdocs/YmExSBNzQtLJXSs.exe

Intelligence

File Origin
# of uploads :
1
# of downloads :
192
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
formbook
Create hunting rule
ID:
1
File name:
989568146d2554c4042ef2cf89686c73.exe
Verdict:
Malicious activity
Analysis date:
2022-08-30 17:53:18 UTC
Tags:
opendir loader formbook trojan stealer
Link:
https://app.any.run/tasks/0b507b54-3a73-43b6-838f-aa9773ddb55b

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/302633/
Result
Verdict:
Malware
Maliciousness:

Behaviour
Сreating synchronization primitives
Sending an HTTP GET request
Launching a process
Creating a file
Searching for synchronization primitives
Launching cmd.exe command interpreter
Sending a custom TCP request
Setting browser functions hooks
Unauthorized injection to a system process
Unauthorized injection to a browser process
Verdict:
Likely Malicious
Threat level:
  7.5/10
Confidence:
100%
Tags:
packed
Link:
https://www.filescan.io/uploads/630e4e9f2fdf5a0825939abb/reports/607e4cc3-393c-43bd-8b47-0e6a6018379f/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
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/2f9341aa-e12f-4bcf-a953-dc5944b1d8fe
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1060730
Signature
.NET source code contains potential unpacker
Antivirus detection for URL or domain
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 domain / URL
Multi AV Scanner detection for submitted file
Performs DNS queries to domains with low reputation
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:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 693255 Sample: wSvvIL4Bon.exe Startdate: 30/08/2022 Architecture: WINDOWS Score: 100 38 Multi AV Scanner detection for domain / URL 2->38 40 Malicious sample detected (through community Yara rule) 2->40 42 Antivirus detection for URL or domain 2->42 44 6 other signatures 2->44 10 wSvvIL4Bon.exe 15 3 2->10         started        process3 dnsIp4 36 37.139.129.142, 49696, 80 LVLT-10753US Germany 10->36 28 C:\Users\user\AppData\...\wSvvIL4Bon.exe.log, ASCII 10->28 dropped 14 RegAsm.exe 10->14         started        file5 process6 signatures7 56 Modifies the context of a thread in another process (thread injection) 14->56 58 Maps a DLL or memory area into another process 14->58 60 Sample uses process hollowing technique 14->60 62 2 other signatures 14->62 17 explorer.exe 14->17 injected process8 dnsIp9 30 www.prefeudalism.xyz 208.91.197.91, 49703, 80 CONFLUENCE-NETWORK-INCVG Virgin Islands (BRITISH) 17->30 32 www.ordermarijuana.email 17->32 34 ordermarijuana.email 34.102.136.180, 49702, 80 GOOGLEUS United States 17->34 46 System process connects to network (likely due to code injection or exploit) 17->46 48 Performs DNS queries to domains with low reputation 17->48 21 cmmon32.exe 17->21         started        signatures10 process11 signatures12 50 Modifies the context of a thread in another process (thread injection) 21->50 52 Maps a DLL or memory area into another process 21->52 54 Tries to detect virtualization through RDTSC time measurements 21->54 24 cmd.exe 1 21->24         started        process13 process14 26 conhost.exe 24->26         started       
Detection:
formbook
Create hunting rule
Link:
https://mwdb.cert.pl/sample/4071a5ec0cb3c1c0c8b0413d179c05476a2ea21ea182b9cc2251f77d3a991801/
Threat name:
Win32.Trojan.RealProtectPENGSD
Create hunting rule
Status:
Malicious
First seen:
2022-08-30 05:00:19 UTC
File Type:
PE (.Net Exe)
Extracted files:
19
AV detection:
20 of 26 (76.92%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=iby2l3amwpa4bsfqie6rphafi5vc5iq6ugblttbckh3x2ouzdaaq._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Result
Malware family:
formbook
Create hunting rule
Score:
  10/10
Tags:
family:formbook campaign:hy29 rat spyware stealer trojan
Link:
https://tria.ge/reports/220830-wgaehsceaj/
Behaviour
Modifies registry class
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
Suspicious use of SetThreadContext
Blocklisted process makes network request
Downloads MZ/PE file
Formbook payload
Formbook
Unpacked files
SH256 hash:
4071a5ec0cb3c1c0c8b0413d179c05476a2ea21ea182b9cc2251f77d3a991801
MD5 hash:
989568146d2554c4042ef2cf89686c73
SHA1 hash:
31007922516b91af98561d770dc59dabe21928b3
Link:
https://www.unpac.me/results/6b0b48b5-8f1a-44bd-aa2d-36cb85f60f0a/
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Suspicious File
Score:
0.35
Link:
https://yomi.yoroi.company/submissions/4071a5ec0cb3c1c0c8b0413d179c05476a2ea21ea182b9cc2251f77d3a991801

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:malware_Formbook_strings
Create hunting rule
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:pdb_YARAify
Create hunting rule
Author:@wowabiy314
Description:PDB
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.

Web download

Formbook

Executable exe 4071a5ec0cb3c1c0c8b0413d179c05476a2ea21ea182b9cc2251f77d3a991801

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/2283205/
  
Delivery method
Distributed via web download
Cape
Cape
https://www.capesandbox.com/analysis/302633/

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