MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 4463e37737add79d5f464a090c55d0c283c075f743fb4500725477f64da17a47. 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 1 File information Comments
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SHA256 hash: 4463e37737add79d5f464a090c55d0c283c075f743fb4500725477f64da17a47
SHA3-384 hash: 8a54bac3d4a718fdbabc5615e48db3cd738521a4b3f110519e02d87ec3be5844c744e80694711dcbf78b4e8606fb94a6
SHA1 hash: 46975720534edd4d21d978572ec49740090ff574
MD5 hash: 103f583b0b6c1d7f715245e9ef78116c
humanhash: india-bakerloo-eighteen-lamp
File name:bolwin2.1.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:564'474 bytes
First seen:2022-10-31 13:15:59 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash 29b61e5a552b3a9bc00953de1c93be41 (174 x Formbook, 82 x AgentTesla, 81 x Loki)
ssdeep 12288:vOurfc/jkvTXVGxxRgxZ9Xk0MvphvGJ6LYQewggnvr:v9I/gTXVYDGZ90fvfVLZDgG
TLSH T1D5C401656AD6D85BD1250D711AF3E378823C8F61092A8703AFA47FDBFE766CC7940089
TrID 48.8% (.EXE) Win32 Executable MS Visual C++ (generic) (31206/45/13)
16.4% (.EXE) Win64 Executable (generic) (10523/12/4)
10.2% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
7.8% (.EXE) Win16 NE executable (generic) (5038/12/1)
7.0% (.EXE) Win32 Executable (generic) (4505/5/1)
File icon (PE):PE icon
dhash icon 028cc4d0b8bcb61b (2 x Formbook, 1 x AveMariaRAT)
Reporter James_inthe_box
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
1
# of downloads :
396
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
formbook
Create hunting rule
ID:
1
File name:
bolwin2.1.exe
Verdict:
Malicious activity
Analysis date:
2022-10-31 13:18:42 UTC
Tags:
formbook trojan stealer
Link:
https://app.any.run/tasks/f8518684-5d16-4b2d-be67-c73ed4783ca8

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/326416/
Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for synchronization primitives
Sending a custom TCP request
Setting browser functions hooks
Searching for the window
Creating a file in the %temp% directory
Creating a process from a recently created file
Launching a process
Сreating synchronization primitives
Launching cmd.exe command interpreter
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
Result
Malware family:
n/a
Score:
  5/10
Tags:
n/a
Link:
https://dragonfly.certego.net/analysis/47007/overview
Behaviour
MalwareBazaar
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
overlay packed shell32.dll
Link:
https://www.filescan.io/uploads/635fca94a5db8d309cbc082c/reports/fb902a17-c01e-4405-929e-160e896aa48b/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/f6b4f11b-e2c0-4966-bc1f-4ae69fed07e2
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1101691
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)
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 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
Uses ipconfig to lookup or modify the Windows network settings
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 734352 Sample: bolwin2.1.exe Startdate: 31/10/2022 Architecture: WINDOWS Score: 100 43 Snort IDS alert for network traffic 2->43 45 Malicious sample detected (through community Yara rule) 2->45 47 Antivirus detection for URL or domain 2->47 49 5 other signatures 2->49 10 bolwin2.1.exe 18 2->10         started        process3 file4 29 C:\Users\user\AppData\...\ktemrjzlqh.exe, PE32 10->29 dropped 31 C:\Users\user\AppData\Local\Temp\cbndjvj.p, SYMMETRY 10->31 dropped 13 ktemrjzlqh.exe 10->13         started        process5 signatures6 59 Multi AV Scanner detection for dropped file 13->59 61 Machine Learning detection for dropped file 13->61 63 Found evasive API chain (may stop execution after reading information in the PEB, e.g. number of processors) 13->63 65 3 other signatures 13->65 16 ktemrjzlqh.exe 13->16         started        process7 signatures8 35 Modifies the context of a thread in another process (thread injection) 16->35 37 Maps a DLL or memory area into another process 16->37 39 Sample uses process hollowing technique 16->39 41 Queues an APC in another process (thread injection) 16->41 19 ipconfig.exe 16->19         started        22 explorer.exe 16->22 injected process9 dnsIp10 51 Modifies the context of a thread in another process (thread injection) 19->51 53 Maps a DLL or memory area into another process 19->53 55 Tries to detect virtualization through RDTSC time measurements 19->55 25 cmd.exe 1 19->25         started        33 www.masjacsh.com 217.194.134.230, 49696, 80 SKYVISIONGB United Kingdom 22->33 57 System process connects to network (likely due to code injection or exploit) 22->57 signatures11 process12 process13 27 conhost.exe 25->27         started       
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/4463e37737add79d5f464a090c55d0c283c075f743fb4500725477f64da17a47/
Threat name:
Win32.Trojan.BazarLoader
Create hunting rule
Status:
Malicious
First seen:
2022-10-28 23:20:36 UTC
File Type:
PE (Exe)
Extracted files:
4
AV detection:
32 of 42 (76.19%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=irr6g5zxvxlz2x2gjieqyvoqykb4a5pxip5ukadskr37mtnbpjdq._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Result
Malware family:
formbook
Create hunting rule
Score:
  10/10
Tags:
family:formbook campaign:bn04 rat spyware stealer trojan
Link:
https://tria.ge/reports/221031-qhsplabab9/
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
Unpacked files
SH256 hash:
734f5453244fd22b9c5414b56692b752fc46e6f7563c5e0da7612731ab8cba82
MD5 hash:
8690374ed47b3fb6a1390367ad0defb9
SHA1 hash:
348a1d33d81bde0e9f60b9a8cbfaab985ee978af
Detections:
FormBook
Create hunting rule
win_formbook_auto
Create hunting rule
win_formbook_g0
Create hunting rule
Link:
https://www.unpac.me/results/507e11ac-a6cb-4a0f-a8a2-1b5d67a4a499/
Parent samples :
7925c1aa63784d45e144da18103137cf6182d8bcbd16ed1b29ead2f15e62d9bf
c108cb0ece5ffd42c4309e118495fc0a62c14ee0c5259207d0b0448881e76e12
4463e37737add79d5f464a090c55d0c283c075f743fb4500725477f64da17a47
SH256 hash:
57a04594f0c62d8ddf3b83e49a4956e69be699c563df5ab58de02aeb3a74dc45
MD5 hash:
a0715a0ec13eead306d9a4e095b72173
SHA1 hash:
61d1e9b78104581a76e7aeaac4b6e736433dc1b3
Link:
https://www.unpac.me/results/507e11ac-a6cb-4a0f-a8a2-1b5d67a4a499/
SH256 hash:
4463e37737add79d5f464a090c55d0c283c075f743fb4500725477f64da17a47
MD5 hash:
103f583b0b6c1d7f715245e9ef78116c
SHA1 hash:
46975720534edd4d21d978572ec49740090ff574
Link:
https://www.unpac.me/results/507e11ac-a6cb-4a0f-a8a2-1b5d67a4a499/
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Legit
Score:
0.18
Link:
https://yomi.yoroi.company/submissions/4463e37737add79d5f464a090c55d0c283c075f743fb4500725477f64da17a47

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

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/326416/

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