MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 427b32faad1663fbe559c2044e382ad604e8df17b78e5450cb3dab2b55db5df3. 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: 18


Intelligence 18 IOCs YARA 7 File information Comments
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SHA256 hash: 427b32faad1663fbe559c2044e382ad604e8df17b78e5450cb3dab2b55db5df3
SHA3-384 hash: 0eb113e499880b360510cd64328fdf67969d6443209b56307af94ef68f40deae8df0c8ce53c726ae6a9c6d2cc14c7aaa
SHA1 hash: 80160d4854a22c6d606599c600587c56a8d64ead
MD5 hash: 31ef7836de85721ee95454a48203312b
humanhash: spring-virginia-bluebird-green
File name:bobolak2.1.exe
Download: download sample
Signature Formbook
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File size:303'685 bytes
First seen:2023-02-09 14:39:06 UTC
Last seen:2023-02-11 02:27:50 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash 61259b55b8912888e90f516ca08dc514 (1'059 x Formbook, 741 x AgentTesla, 427 x GuLoader)
ssdeep 6144:vYa65HL840K7tHcktnvHVZ6yFnzYe10XpN4FKHdDp8:vYXHLTTD64YA0XpN718
TLSH T165541254B2E0D133F7B71D310F7BE7AAABF5B01515A4028A23E44FA5BD729C1A60E712
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 0000000000000000 (872 x AgentTesla, 496 x Formbook, 296 x RedLineStealer)
Reporter James_inthe_box
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
3
# of downloads :
189
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
formbook
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ID:
1
File name:
bobolak2.1.exe
Verdict:
Malicious activity
Analysis date:
2023-02-09 14:43:06 UTC
Tags:
formbook xloader trojan stealer
Link:
https://app.any.run/tasks/b18e4e0a-420a-4ba0-9af6-55efdcb1ed74

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
Formbook
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Link:
https://www.capesandbox.com/analysis/362845/
Detection(s):
SecuriteInfo.com.Trojan.NSISX.Spy.Gen.24.27282.28601.UNOFFICIAL
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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
Reading critical registry keys
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/67206/overview
Behaviour
MalwareBazaar
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
83%
Tags:
overlay packed shell32.dll
Link:
https://www.filescan.io/uploads/63e505c4c7ca3840b5a161f6/reports/f3721daf-4e82-4fbe-8815-45b39ba4c650/overview
Verdict:
Malicious
Labled as:
Win/malicious_confidence_100%
Link:
https://www.hybrid-analysis.com/sample/427b32faad1663fbe559c2044e382ad604e8df17b78e5450cb3dab2b55db5df3
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
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Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/83b73fb8-ce7a-4d70-b6c7-285fd5c40fe6
Result
Threat name:
FormBook
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Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1170238
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
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: 803034 Sample: bobolak2.1.exe Startdate: 09/02/2023 Architecture: WINDOWS Score: 100 47 Snort IDS alert for network traffic 2->47 49 Malicious sample detected (through community Yara rule) 2->49 51 Multi AV Scanner detection for submitted file 2->51 53 4 other signatures 2->53 11 bobolak2.1.exe 19 2->11         started        process3 file4 31 C:\Users\user\AppData\Local\...\wrskkgh.exe, PE32 11->31 dropped 14 wrskkgh.exe 11->14         started        process5 signatures6 63 Multi AV Scanner detection for dropped file 14->63 65 Maps a DLL or memory area into another process 14->65 67 Tries to detect virtualization through RDTSC time measurements 14->67 17 wrskkgh.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 1 17->20 injected process9 dnsIp10 33 123findcapital.com 15.197.142.173, 49698, 80 TANDEMUS United States 20->33 35 www.kscompetitions.co.uk 81.17.18.197, 49700, 80 PLI-ASCH Switzerland 20->35 37 9 other IPs or domains 20->37 55 System process connects to network (likely due to code injection or exploit) 20->55 24 rundll32.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/427b32faad1663fbe559c2044e382ad604e8df17b78e5450cb3dab2b55db5df3/
Threat name:
Win32.Trojan.FormBook
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Status:
Malicious
First seen:
2023-02-09 14:38:37 UTC
File Type:
PE (Exe)
Extracted files:
3
AV detection:
20 of 26 (76.92%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=ij5tf6vnczr7xzkzyice4obk2ycorxyxw6hfiuglhwvswvo3lxzq._file
Verdict:
malicious
Label(s):
formbook
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Result
Malware family:
formbook
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Score:
  10/10
Tags:
family:formbook campaign:b07o rat spyware stealer trojan
Link:
https://tria.ge/reports/230209-r1vscafh75/
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:
40ebf932399085c2f7ede858eb9027ee154ff1471df3cbe9405b00a7b36bbd87
MD5 hash:
bc4c9add11198aae29ba077ea1188827
SHA1 hash:
8ea088b498b02b39f24b78d6c9f7a71e9ad49d08
Detections:
FormBook
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win_formbook_w0
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win_formbook_auto
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win_formbook_g0
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Link:
https://www.unpac.me/results/fdb4d8df-24c0-40f5-8d87-551e36126fd0/
Parent samples :
427b32faad1663fbe559c2044e382ad604e8df17b78e5450cb3dab2b55db5df3
3c081233757b9e6b0c3b74db106fb9778b2bcef8a708fc642f3e2c4e6eb74410
4e11fcc1a1b57eda0d4a01087856ab72ea159ec8ad1f8430c0db94fb250c65e2
ad8fd0b0690db382dc13e6e8a7365581877af214c39ca5dd673b8cea760e8891
SH256 hash:
f90cfd564f3362ef6b8384a656ea30774745eef8d7458e2145ce55f571227915
MD5 hash:
96a047c232164f50e3fa9bfa9b4a2935
SHA1 hash:
ceb1323ff13d549faa98e9f301b6f77f2de3402c
Link:
https://www.unpac.me/results/fdb4d8df-24c0-40f5-8d87-551e36126fd0/
SH256 hash:
427b32faad1663fbe559c2044e382ad604e8df17b78e5450cb3dab2b55db5df3
MD5 hash:
31ef7836de85721ee95454a48203312b
SHA1 hash:
80160d4854a22c6d606599c600587c56a8d64ead
Link:
https://www.unpac.me/results/fdb4d8df-24c0-40f5-8d87-551e36126fd0/
Malware family:
XLoader
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/427b32faad16/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/427b32faad1663fbe559c2044e382ad604e8df17b78e5450cb3dab2b55db5df3

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

File information

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

  
Delivery method
Other
Cape
Cape
https://www.capesandbox.com/analysis/362845/
  
URLhaus
https://urlhaus.abuse.ch/url/2535169/

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