MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 bfb973a2a005029171ef58cc29552235909ffffeeed05f5c5d469cdd6d8424cc. 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: 11


Intelligence 11 IOCs YARA 4 File information Comments 1
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: bfb973a2a005029171ef58cc29552235909ffffeeed05f5c5d469cdd6d8424cc
SHA3-384 hash: 3e6beba8205053f800cf0c503d299a1fa845c50f3dbe5f248fee14a1184af42bdd07caae371c68bb9eaa8bac72f0a461
SHA1 hash: a8cb60ee277e259301ee46898b7bba3bba26ab6a
MD5 hash: 61d8380734dab62afb07e2d12cb746af
humanhash: triple-idaho-diet-hawaii
File name:61d8380734dab62afb07e2d12cb746af
Download: download sample
Signature Formbook
Create hunting rule
File size:27'136 bytes
First seen:2022-05-20 13:30:50 UTC
Last seen:2022-05-20 15:48:04 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'653 x AgentTesla, 19'464 x Formbook, 12'205 x SnakeKeylogger)
ssdeep 384:u1aHgufUU9Wkef2n7tlYw5p0HKKOBhryiiiiiiiiiiiiiiiiiElgaaaaf5JVN89:l3nczllgaaas5J389
TLSH T12CC2712A1A25C158D55409BFCD11CAB8826B6D10AB7198D375DE3F3F7BB32B04BA4326
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 e1e1f1b8b8b8aaaa (2 x Formbook)
Reporter zbetcheckin
Tags:32 exe FormBook

Intelligence

File Origin
# of uploads :
2
# of downloads :
297
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
formbook
Create hunting rule
ID:
1
File name:
61d8380734dab62afb07e2d12cb746af
Verdict:
Malicious activity
Analysis date:
2022-05-20 14:02:29 UTC
Tags:
formbook trojan stealer
Link:
https://app.any.run/tasks/2153e01e-2d9c-4d87-bc6b-558619a17172

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/273065/
Detection(s):
SecuriteInfo.com.W32.AIDetectNet.01.29508.15920.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Сreating synchronization primitives
DNS request
Sending an HTTP GET request
Running batch commands
Creating a process with a hidden window
Launching a process
Creating a file in the %AppData% subdirectories
Creating a file
Searching for synchronization primitives
Launching cmd.exe command interpreter
Enabling autorun by creating a file
Unauthorized injection to a system process
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
control.exe obfuscated packed
Link:
https://www.filescan.io/uploads/62879855945ebb7eb17163f1/reports/cc443cd6-8880-4c6b-81dd-54ef8025bf08/overview
Result
Verdict:
UNKNOWN
Details
Windows PE Executable
Found a Windows Portable Executable (PE) binary. Depending on context, the presence of a binary is suspicious or malicious.
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/37dfc805-795b-4e73-a04f-b7b7ad29461a
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/998618
Signature
.NET source code contains potential unpacker
Antivirus / Scanner detection for submitted sample
Antivirus detection for dropped file
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Creates an undocumented autostart registry key
Found malware configuration
Injects a PE file into a foreign processes
Machine Learning detection for dropped file
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 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
Writes to foreign memory regions
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 631113 Sample: iXsXnOzCi9 Startdate: 20/05/2022 Architecture: WINDOWS Score: 100 49 Snort IDS alert for network traffic 2->49 51 Multi AV Scanner detection for domain / URL 2->51 53 Found malware configuration 2->53 55 12 other signatures 2->55 10 iXsXnOzCi9.exe 15 7 2->10         started        process3 dnsIp4 47 darley.ml 192.185.174.178, 49755, 80 UNIFIEDLAYER-AS-1US United States 10->47 39 C:\Users\user\AppData\...\Ixjyoejx.exe, PE32 10->39 dropped 41 C:\Users\...\Ixjyoejx.exe:Zone.Identifier, ASCII 10->41 dropped 43 C:\Users\user\AppData\...\iXsXnOzCi9.exe.log, ASCII 10->43 dropped 59 Creates an undocumented autostart registry key 10->59 61 Writes to foreign memory regions 10->61 63 Injects a PE file into a foreign processes 10->63 15 MSBuild.exe 10->15         started        18 MSBuild.exe 10->18         started        20 cmd.exe 1 10->20         started        file5 signatures6 process7 signatures8 71 Modifies the context of a thread in another process (thread injection) 15->71 73 Maps a DLL or memory area into another process 15->73 75 Sample uses process hollowing technique 15->75 77 Queues an APC in another process (thread injection) 15->77 22 explorer.exe 15->22 injected 79 Tries to detect virtualization through RDTSC time measurements 18->79 26 conhost.exe 20->26         started        28 timeout.exe 1 20->28         started        process9 dnsIp10 45 www.starpart.net 208.91.197.27, 49784, 80 CONFLUENCE-NETWORK-INCVG Virgin Islands (BRITISH) 22->45 57 System process connects to network (likely due to code injection or exploit) 22->57 30 help.exe 22->30         started        33 autoconv.exe 22->33         started        signatures11 process12 signatures13 65 Modifies the context of a thread in another process (thread injection) 30->65 67 Maps a DLL or memory area into another process 30->67 69 Tries to detect virtualization through RDTSC time measurements 30->69 35 cmd.exe 1 30->35         started        process14 process15 37 conhost.exe 35->37         started       
Detection:
formbook
Create hunting rule
Link:
https://mwdb.cert.pl/sample/bfb973a2a005029171ef58cc29552235909ffffeeed05f5c5d469cdd6d8424cc/
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
Create hunting rule
Status:
Malicious
First seen:
2022-05-20 13:31:07 UTC
File Type:
PE (.Net Exe)
Extracted files:
10
AV detection:
18 of 26 (69.23%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=x64xhivaaubjc4ppldgcsvjcgwij777653if6xc5i2on23meetga._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Result
Malware family:
formbook
Create hunting rule
Score:
  10/10
Tags:
family:formbook campaign:sn12 rat spyware stealer suricata trojan
Link:
https://tria.ge/reports/220520-qsc2wsghdm/
Behaviour
Delays execution with timeout.exe
Gathers network information
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Suspicious use of SetThreadContext
Checks computer location settings
Formbook Payload
Formbook
suricata: ET MALWARE FormBook CnC Checkin (GET)
Unpacked files
SH256 hash:
bfb973a2a005029171ef58cc29552235909ffffeeed05f5c5d469cdd6d8424cc
MD5 hash:
61d8380734dab62afb07e2d12cb746af
SHA1 hash:
a8cb60ee277e259301ee46898b7bba3bba26ab6a
Link:
https://www.unpac.me/results/94495cb7-36e5-4d8c-9259-71454857cfa4/
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/bfb973a2a005029171ef58cc29552235909ffffeeed05f5c5d469cdd6d8424cc

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: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 bfb973a2a005029171ef58cc29552235909ffffeeed05f5c5d469cdd6d8424cc

(this sample)

  
Delivery method
Distributed via web download
  
URLhaus
https://urlhaus.abuse.ch/url/2204003/
Cape
Cape
https://www.capesandbox.com/analysis/273065/

Comments


Avatar
zbet commented on 2022-05-20 13:30:58 UTC

url : hxxp://192.210.240.37/d/zmb.exe