MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 98b2ac6e4cdb537c352e38576d8506017a03acd5ef9dc62ffe20e893b0f05a73. 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: 12


Intelligence 12 IOCs YARA 2 File information Comments
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SHA256 hash: 98b2ac6e4cdb537c352e38576d8506017a03acd5ef9dc62ffe20e893b0f05a73
SHA3-384 hash: 9ab6c4128e4d5e95953f32ea7a4965e52e1b03ede085dc26dc73bfbacccdeda91ddcab3a4e943c7f79148ee4a027d541
SHA1 hash: e1fc3bb134a6ae9da49279f32eb9719b73bad2e0
MD5 hash: 6252237d4c11933a01f9795c97c728c0
humanhash: friend-nine-nine-social
File name:vbc.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:1'052'672 bytes
First seen:2022-03-10 15:06:14 UTC
Last seen:2022-03-10 16:49:05 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'657 x AgentTesla, 19'468 x Formbook, 12'206 x SnakeKeylogger)
ssdeep 12288:8YfSx+mpx3DWcDCy3N9hddNhqDwuUG0HCHtUiM8WMRyOnC+YkFgvQdPhMQ51wuvM:8Yaxzoy3bhddNhuUHinRa+YkFJ3/HHS
Threatray 11'179 similar samples on MalwareBazaar
TLSH T11725DFE1FF08C37EDC04223AC1E944701EF51A8E3822FF4AAA8D51DD4957ACF599A52D
Reporter James_inthe_box
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
2
# of downloads :
262
Origin country :
n/a
Vendor Threat Intelligence
Detection:
Formbook
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Link:
https://www.capesandbox.com/analysis/249182/
Detection(s):
SecuriteInfo.com.Trojan.PackedNET.1231.28828.21292.UNOFFICIAL
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Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Sending a custom TCP request
Сreating synchronization primitives
Creating a file in the %AppData% directory
Enabling the 'hidden' option for recently created files
Adding an access-denied ACE
Creating a process from a recently created file
Creating a process with a hidden window
Creating a file in the %temp% directory
Launching a process
Launching cmd.exe command interpreter
Enabling autorun by creating a file
Unauthorized injection to a system process
Verdict:
Likely Malicious
Threat level:
  7.5/10
Confidence:
100%
Tags:
control.exe obfuscated packed replace.exe
Link:
https://www.filescan.io/uploads/622a1419b94fb38cb453060d/reports/ca2de16c-b5d0-497b-9a77-bf16f1dd56d6/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.
Malware family:
Formbook
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Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/a96ec98f-bd4c-4231-838f-82bdadaebeb2
Result
Threat name:
FormBook gzRat
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/954313
Signature
.NET source code contains method to dynamically call methods (often used by packers)
Adds a directory exclusion to Windows Defender
C2 URLs / IPs found in malware configuration
Found malware configuration
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)
Queues an APC in another process (thread injection)
Sample uses process hollowing technique
Sigma detected: Bad Opsec Defaults Sacrificial Processes With Improper Arguments
Sigma detected: Suspicious Add Scheduled Task From User AppData Temp
Sigma detected: Suspicius Schtasks From Env Var Folder
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Tries to detect virtualization through RDTSC time measurements
Uses schtasks.exe or at.exe to add and modify task schedules
Yara detected AntiVM3
Yara detected FormBook
Yara detected gzRat
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 586794 Sample: vbc.exe Startdate: 10/03/2022 Architecture: WINDOWS Score: 100 42 Found malware configuration 2->42 44 Malicious sample detected (through community Yara rule) 2->44 46 Yara detected gzRat 2->46 48 10 other signatures 2->48 10 vbc.exe 7 2->10         started        process3 file4 34 C:\Users\user\AppData\...\USUaoyNjGTWW.exe, PE32 10->34 dropped 36 C:\Users\...\USUaoyNjGTWW.exe:Zone.Identifier, ASCII 10->36 dropped 38 C:\Users\user\AppData\Local\...\tmpC76C.tmp, XML 10->38 dropped 40 C:\Users\user\AppData\Local\...\vbc.exe.log, ASCII 10->40 dropped 50 Uses schtasks.exe or at.exe to add and modify task schedules 10->50 52 Adds a directory exclusion to Windows Defender 10->52 14 RegSvcs.exe 10->14         started        17 powershell.exe 25 10->17         started        19 schtasks.exe 1 10->19         started        signatures5 process6 signatures7 60 Modifies the context of a thread in another process (thread injection) 14->60 62 Maps a DLL or memory area into another process 14->62 64 Sample uses process hollowing technique 14->64 66 2 other signatures 14->66 21 explorer.exe 14->21 injected 23 conhost.exe 17->23         started        25 conhost.exe 19->25         started        process8 process9 27 wscript.exe 21->27         started        signatures10 54 Modifies the context of a thread in another process (thread injection) 27->54 56 Maps a DLL or memory area into another process 27->56 58 Tries to detect virtualization through RDTSC time measurements 27->58 30 cmd.exe 1 27->30         started        process11 process12 32 conhost.exe 30->32         started       
Detection:
xloader
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Link:
https://mwdb.cert.pl/sample/98b2ac6e4cdb537c352e38576d8506017a03acd5ef9dc62ffe20e893b0f05a73/
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
Create hunting rule
Status:
Malicious
First seen:
2022-03-10 15:04:51 UTC
File Type:
PE (.Net Exe)
Extracted files:
10
AV detection:
19 of 27 (70.37%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=tczky3sm3njxynjohblw3bigaf5ahlgv56o4ml76edujhmhqljzq._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Similar samples:
28c28db28e96276f72ce38a60d04f0711388d3f93ecb34d4721dc94fc2bf9f07
Formbook
2e3fd0cf4b98695538a9c744e1961b63ec166fe3c02719560fedaddcd0fde689
Formbook
49f94b3fbaf875cb2c223cdee59cfdedf4b2b937fba4a473cf2e4f767b44cb4c
Formbook
6a68426f18f239950d5bb0d82223890b44ea10de5a5fa83294457dd3dcdc5068
Formbook
90a995e5f46d21ee81b12ea412a68168fa3bd9b3def1c23f310fec53f007bf77
Formbook
a5d6adfd8bc92f880aaf9574f27699521e392bde19430af5685bf458860dcd7e
Formbook
b744ce05ac972c78665248d8ddc39cc6779639233531957d7e93d1970fe42126
Formbook
d6a113f33599b8c821531df91dc5cd29501cab9fa911b8844a3447d0991e7362
Formbook
e1754d3bb2df3b1c3c8b6448afd0e7e03b65e4d4a9fa331df40acc0acc38a408
Formbook
+ 11'169 additional samples on MalwareBazaar
Result
Malware family:
n/a
Score:
  7/10
Tags:
n/a
Link:
https://tria.ge/reports/220310-shbr7agbg8/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Enumerates physical storage devices
Uses the VBS compiler for execution
Unpacked files
SH256 hash:
47961333cfc58da6077f142c814eb29fd3255aa4aae376203343a54c405d4dbb
MD5 hash:
ec3aa8521ef8038bcd6159baea11e65a
SHA1 hash:
15ef4bbc7160dc228de0ffeb21440eb20473265d
Detections:
win_formbook_g0
Create hunting rule
win_formbook_auto
Create hunting rule
Link:
https://www.unpac.me/results/3f04f9a0-5602-4ca0-bb38-3334305bccf9/
Parent samples :
98b2ac6e4cdb537c352e38576d8506017a03acd5ef9dc62ffe20e893b0f05a73
f024c838fba1619082aacb508ffec28e994d1a918b680d1ec2b7681ad3a46433
e1589588b95e03844e0f5ccae574e722d68351c867b8535cd3df9467d381cdbb
739e94a41234bd028fae27705c6d0ff5d8d9925068384bcdfe4cdecc1fb36e4f
8fb567155619feef229141bb4a87119700061289822b50e682534a2051c5a4f8
SH256 hash:
5b69a357c020f90311c26f21517540bebda9f35c67f457a5b7c3e5e9d7fc5b92
MD5 hash:
8cf245d28569957efe2ea481fbc48b9d
SHA1 hash:
fb4058dac5748781ef11ad593b66064bfa2b4bcb
Link:
https://www.unpac.me/results/3f04f9a0-5602-4ca0-bb38-3334305bccf9/
SH256 hash:
06924038f58ab6b840f9ad56320c8182cfdc091adbcb25635cb5ac179d8964f5
MD5 hash:
4e1d5168ef105df6efd72a74596ef7a6
SHA1 hash:
d3b48b64bd162fcb98269b0bbfdbeffb85a5d21c
Link:
https://www.unpac.me/results/3f04f9a0-5602-4ca0-bb38-3334305bccf9/
SH256 hash:
9b00e2fa33ad72dec22a5e107ab6886da72bbe0bed89a721e877c1dc3ce6a662
MD5 hash:
b4c9c16228f0ee1de70ffc6264fb720c
SHA1 hash:
437049e452a511e220abdb32df695cdf07f5a7d0
Link:
https://www.unpac.me/results/3f04f9a0-5602-4ca0-bb38-3334305bccf9/
SH256 hash:
98b2ac6e4cdb537c352e38576d8506017a03acd5ef9dc62ffe20e893b0f05a73
MD5 hash:
6252237d4c11933a01f9795c97c728c0
SHA1 hash:
e1fc3bb134a6ae9da49279f32eb9719b73bad2e0
Link:
https://www.unpac.me/results/3f04f9a0-5602-4ca0-bb38-3334305bccf9/
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/98b2ac6e4cdb537c352e38576d8506017a03acd5ef9dc62ffe20e893b0f05a73

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: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.

  
Delivery method
Other
Cape
Cape
https://www.capesandbox.com/analysis/249182/

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