MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 cb50c19d2d18350fed8304ddb50efe3ce6f17d9f5923ffa5d407db718f787c92. 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 5 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: cb50c19d2d18350fed8304ddb50efe3ce6f17d9f5923ffa5d407db718f787c92
SHA3-384 hash: b84b451542ec8eeda55b51a11972017dcbb7fb080094aee052831e220bd2fcc9e79cb5d9275f15a8717d3711f5c5f85f
SHA1 hash: d3758f72efd4f663c5d8a563a36cc8764ee80d2f
MD5 hash: 00c046f0b491939d5be1d75edc9a0e46
humanhash: six-solar-stream-hydrogen
File name:Xwbnutju98765456789.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:13'312 bytes
First seen:2022-03-14 12:10:44 UTC
Last seen:2022-03-21 12:45:11 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'652 x AgentTesla, 19'463 x Formbook, 12'204 x SnakeKeylogger)
ssdeep 384:H/TLB5a1Ppy1PyW6k/nliiay9ycyrsR2vZWtJh:HLLBEPCyrk/nFycyrsR2vZWtJh
Threatray 14'163 similar samples on MalwareBazaar
TLSH T1EC522B64E7ACCAF0D8611BBA6C731B91197DF217E8269E0F24C5620E2D2315545B2B73
File icon (PE):PE icon
dhash icon 64f4d4d4ecf4d4d4 (82 x SnakeKeylogger, 34 x AgentTesla, 24 x Formbook)
Reporter adrian__luca
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
2
# of downloads :
178
Origin country :
n/a
Vendor Threat Intelligence
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/250174/
Detection(s):
SecuriteInfo.com.Trojan.Downloader.10124.UNOFFICIAL
Create hunting rule

Win.Trojan.WPDownloader-9939915-0
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Сreating synchronization primitives
Creating a window
Launching a process
Creating a process with a hidden window
Sending a custom TCP request
Running batch commands
DNS request
Unauthorized injection to a system process
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
obfuscated packed
Link:
https://www.filescan.io/uploads/622f30ecb94fb38cb47a4632/reports/ed51cbec-dfd5-402b-afe2-2442bf7aa4ca/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:
Generic Malware
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/6113c810-a56d-487b-9075-9a4598dc822a
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/956086
Signature
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Encrypted powershell cmdline option found
Found malware configuration
Injects a PE file into a foreign processes
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)
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 (e.g. based on Emerging Threat rules)
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Tries to detect virtualization through RDTSC time measurements
Writes to foreign memory regions
Yara detected Costura Assembly Loader
Yara detected FormBook
Yara detected Generic Downloader
Yara detected MSILDownloaderGeneric
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 588565 Sample: Xwbnutju98765456789.exe Startdate: 14/03/2022 Architecture: WINDOWS Score: 100 44 www.bet2.info 2->44 62 Snort IDS alert for network traffic (e.g. based on Emerging Threat rules) 2->62 64 Found malware configuration 2->64 66 Malicious sample detected (through community Yara rule) 2->66 68 9 other signatures 2->68 11 Xwbnutju98765456789.exe 15 4 2->11         started        signatures3 process4 dnsIp5 46 cdn.discordapp.com 162.159.133.233, 443, 49752 CLOUDFLARENETUS United States 11->46 42 C:\Users\user\...\Xwbnutju98765456789.exe.log, ASCII 11->42 dropped 70 Encrypted powershell cmdline option found 11->70 72 Writes to foreign memory regions 11->72 74 Injects a PE file into a foreign processes 11->74 16 MSBuild.exe 11->16         started        19 powershell.exe 9 11->19         started        21 cmd.exe 1 11->21         started        file6 signatures7 process8 signatures9 48 Modifies the context of a thread in another process (thread injection) 16->48 50 Maps a DLL or memory area into another process 16->50 52 Sample uses process hollowing technique 16->52 54 2 other signatures 16->54 23 explorer.exe 16->23 injected 25 cmd.exe 1 19->25         started        27 conhost.exe 19->27         started        29 conhost.exe 21->29         started        31 timeout.exe 1 21->31         started        process10 process11 33 colorcpl.exe 23->33         started        36 timeout.exe 1 25->36         started        signatures12 56 Modifies the context of a thread in another process (thread injection) 33->56 58 Maps a DLL or memory area into another process 33->58 60 Tries to detect virtualization through RDTSC time measurements 33->60 38 cmd.exe 1 33->38         started        process13 process14 40 conhost.exe 38->40         started       
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/cb50c19d2d18350fed8304ddb50efe3ce6f17d9f5923ffa5d407db718f787c92/
Threat name:
ByteCode-MSIL.Trojan.Mardom
Create hunting rule
Status:
Malicious
First seen:
2022-03-13 16:55:38 UTC
File Type:
PE (.Net Exe)
Extracted files:
4
AV detection:
20 of 27 (74.07%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=znimdhjnda2q73mdato3kdx6httpc7m7ler77joua7nxdd3ypsja._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Similar samples:
30eca50cfb9de3391b755191b2e3e3d048222fd7b1af995cc089c49258b44610
Formbook
38444024682d6ea391135d374ecd6f457bb01df512801e25fcbd2931afe58d92
Formbook
3a4c026f2e3c450b18931610d6a795ffe504c41ca1d4bf7d26c5a7a57abcf389
Formbook
3b10fd5bae448476e22cca9c4b9b12263c089af68ebfeb7159ddaf2f4ec3e7bc
Formbook
4c6c6d26b853d44fc189e67eaa4f65e440d6ee75ac8a5bde95ccc73b0b611c2a
Formbook
a608c335a71c2d4e38ce67af529bf6e9bdc84555cdce0269eae7d5539fa33549
Formbook
b14cfba125a0fd02139064d326e1b32bddff5d1ae0e50fff24bc4f9a2f9e1732
Formbook
cee2290e27d378faacd5a9ab5fc579e912c1ecee9db29e4e79d8b9cd7ee10c94
Formbook
dae8588b604d0728a1a1ecc77096197a34ed1b22ae7de69a53f39b59e6574ffd
Formbook
e812adcd8f8470a1be64d92dafaebf717db1c45d58fe04a9160d88a468cf7e3c
Formbook
+ 14'153 additional samples on MalwareBazaar
Result
Malware family:
xloader
Create hunting rule
Score:
  10/10
Tags:
family:xloader campaign:pot0 loader rat
Link:
https://tria.ge/reports/220314-pcl47afag8/
Behaviour
Delays execution with timeout.exe
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
Xloader Payload
Xloader
Unpacked files
SH256 hash:
cb50c19d2d18350fed8304ddb50efe3ce6f17d9f5923ffa5d407db718f787c92
MD5 hash:
00c046f0b491939d5be1d75edc9a0e46
SHA1 hash:
d3758f72efd4f663c5d8a563a36cc8764ee80d2f
Link:
https://www.unpac.me/results/9cf77d78-8de3-49c4-932a-f08af11e7bea/
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/cb50c19d2d18350fed8304ddb50efe3ce6f17d9f5923ffa5d407db718f787c92

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_SUSPICIOUS_EXE_DiscordURL
Create hunting rule
Author:ditekSHen
Description:Detects executables Discord URL observed in first stage droppers
Rule name:pe_imphash
Create hunting rule
Rule name:Skystars_Malware_Imphash
Create hunting rule
Author:Skystars LightDefender
Description:imphash
Rule name:SUSP_Discord_Attachments_URL
Create hunting rule
Author:SECUINFRA Falcon Team
Description:Detects a PE file that contains an Discord Attachments URL. This is often used by Malware to download further payloads
Rule name:SUSP_PE_Discord_Attachment_Oct21_1
Create hunting rule
Author:Florian Roth
Description:Detects suspicious executable with reference to a Discord attachment (often used for malware hosting on a legitimate FQDN)
Reference:Internal Research

File information

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

Malspam

Formbook

Executable exe cb50c19d2d18350fed8304ddb50efe3ce6f17d9f5923ffa5d407db718f787c92

(this sample)

  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/250174/

Comments