MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 f31cd91440c409b5420f1952db0bd3eb158a6dd9b8a19d8328d7eea32c4f4928. 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: 9


Intelligence 9 IOCs YARA 3 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: f31cd91440c409b5420f1952db0bd3eb158a6dd9b8a19d8328d7eea32c4f4928
SHA3-384 hash: 5f56ee6bcabf614fbb142bf20a105eac4c09afa42acd9c03b539028d9c2990d40f098df57a82023ee60ba4ba6cdb1e8d
SHA1 hash: 71ad1516319791378e3228ef90c9811753d86772
MD5 hash: 2bf0509633eae7b7c098d8f2aacad1d6
humanhash: bravo-video-connecticut-pizza
File name:0010012.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:122'368 bytes
First seen:2022-10-12 06:06:46 UTC
Last seen:2022-10-18 07:25:55 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'664 x AgentTesla, 19'478 x Formbook, 12'208 x SnakeKeylogger)
ssdeep 3072:sd7hY72rOAOkGt6+duWA/t/SHUebbxCbGgKk12qk/9n/87gUHCzQgtn9LXCk9aPc:KG5FJ
TLSH T101C331827145ECDAD45328F2586ED57060B47ECF8165CA0D3B83BF2A94E734234A7B9E
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 f29296968e9e9ea6 (60 x AgentTesla, 37 x RedLineStealer, 35 x Formbook)
Reporter cocaman
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
3
# of downloads :
228
Origin country :
n/a
Vendor Threat Intelligence
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/319195/
Result
Verdict:
Suspicious
Maliciousness:

Behaviour
Searching for the window
Creating a window
Сreating synchronization primitives
Sending a custom TCP request
Query of malicious DNS domain
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
obfuscated packed
Link:
https://www.filescan.io/uploads/6346598767135c9da2467c0c/reports/25da75f2-6ec4-4360-b530-0ab142c1fb2f/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.
Verdict:
Suspicious
Link:
https://analyze.intezer.com/analyses/3bcb7ebe-28c1-4f79-8e0b-7f411574cfc5
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1088561
Signature
.NET source code contains potential unpacker
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Creates an undocumented autostart registry key
Drops executable to a common third party application directory
Encrypted powershell cmdline option found
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
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Tries to detect virtualization through RDTSC time measurements
Yara detected Costura Assembly Loader
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 721154 Sample: 0010012.exe Startdate: 12/10/2022 Architecture: WINDOWS Score: 100 39 Snort IDS alert for network traffic 2->39 41 Malicious sample detected (through community Yara rule) 2->41 43 Antivirus detection for URL or domain 2->43 45 10 other signatures 2->45 10 0010012.exe 15 7 2->10         started        process3 dnsIp4 37 fullline.com.my 15.235.144.173, 443, 49700 HP-INTERNET-ASUS United States 10->37 31 C:\Users\user\AppData\Roaming\...\cloud.exe, PE32 10->31 dropped 33 C:\Users\user\...\cloud.exe:Zone.Identifier, ASCII 10->33 dropped 35 C:\Users\user\AppData\...\0010012.exe.log, ASCII 10->35 dropped 51 Creates an undocumented autostart registry key 10->51 53 Encrypted powershell cmdline option found 10->53 55 Drops executable to a common third party application directory 10->55 15 MSBuild.exe 10->15         started        18 powershell.exe 14 10->18         started        file5 signatures6 process7 signatures8 57 Modifies the context of a thread in another process (thread injection) 15->57 59 Maps a DLL or memory area into another process 15->59 61 Sample uses process hollowing technique 15->61 63 2 other signatures 15->63 20 explorer.exe 15->20 injected 22 conhost.exe 18->22         started        process9 process10 24 mstsc.exe 20->24         started        signatures11 47 Maps a DLL or memory area into another process 24->47 49 Tries to detect virtualization through RDTSC time measurements 24->49 27 cmd.exe 1 24->27         started        process12 process13 29 conhost.exe 27->29         started       
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/f31cd91440c409b5420f1952db0bd3eb158a6dd9b8a19d8328d7eea32c4f4928/
Threat name:
ByteCode-MSIL.Backdoor.Bladabhindi
Create hunting rule
Status:
Malicious
First seen:
2022-10-12 02:55:20 UTC
File Type:
PE (.Net Exe)
Extracted files:
15
AV detection:
13 of 42 (30.95%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=6monsfcayqe3kqqpdfjnwc6t5mkyu3ozxcqz3azi27xkglcpjeua._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Result
Malware family:
n/a
Score:
  1/10
Tags:
n/a
Link:
https://tria.ge/reports/221012-gva6mscfg7/
Behaviour
Suspicious use of AdjustPrivilegeToken
Verdict:
Malicious
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/a99f8526-a318-44e3-83b6-4352e9ce0df6
Unpacked files
SH256 hash:
f31cd91440c409b5420f1952db0bd3eb158a6dd9b8a19d8328d7eea32c4f4928
MD5 hash:
2bf0509633eae7b7c098d8f2aacad1d6
SHA1 hash:
71ad1516319791378e3228ef90c9811753d86772
Link:
https://www.unpac.me/results/83eb16a7-6b9f-43cd-943e-15edb9048d1e/
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/f31cd91440c409b5420f1952db0bd3eb158a6dd9b8a19d8328d7eea32c4f4928

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:INDICATOR_EXE_Packed_SmartAssembly
Create hunting rule
Author:ditekSHen
Description:Detects executables packed with SmartAssembly
Rule name:pe_imphash
Create hunting rule
Rule name:Skystars_Malware_Imphash
Create hunting rule
Author:Skystars LightDefender
Description:imphash

File information

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

Malspam

Formbook

rar 91ccae5a014444eeae83796199ebdec425db184183d2bab9e7bfa008f79225f5

Formbook

Executable exe f31cd91440c409b5420f1952db0bd3eb158a6dd9b8a19d8328d7eea32c4f4928

(this sample)

  
Delivery method
Other
  
Dropped by
SHA256 91ccae5a014444eeae83796199ebdec425db184183d2bab9e7bfa008f79225f5
Cape
Cape
https://www.capesandbox.com/analysis/319195/
  
Dropped by
MD5 4e790a4a4bfd857894be8f77ddb85617

Comments