MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 739e94a41234bd028fae27705c6d0ff5d8d9925068384bcdfe4cdecc1fb36e4f. 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 2 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 739e94a41234bd028fae27705c6d0ff5d8d9925068384bcdfe4cdecc1fb36e4f
SHA3-384 hash: cd0b5074b2ae70621b64173ec69f229be3a292d390367f557a43f7d90cc268a0c55fbeb0ccc614d7d541dae4aaac53f0
SHA1 hash: 9c907a51a50d145410ec5ed57c0dcd19f852d089
MD5 hash: 4931e28f298dce8158aa993a7f4bb964
humanhash: fillet-rugby-beryllium-crazy
File name:vbc.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:437'760 bytes
First seen:2022-03-17 13:55:06 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'742 x AgentTesla, 19'607 x Formbook, 12'242 x SnakeKeylogger)
ssdeep 12288:MvVkYTOY/Vw/bi29qYfLVceFXhpO1VPH:u/tQW29qYjVcOTOvH
Threatray 14'285 similar samples on MalwareBazaar
TLSH T115946B7E18A95337CE7BD2728650141AF691D1EB3902AD29FEC31B810D176CA3FC692D
Reporter James_inthe_box
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
1
# of downloads :
227
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
formbook
Create hunting rule
ID:
1
File name:
vbc.exe
Verdict:
Malicious activity
Analysis date:
2022-03-18 00:26:53 UTC
Tags:
trojan formbook stealer
Link:
https://app.any.run/tasks/839a0ab3-d810-4426-818e-97f046d6f075

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/251958/
Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Сreating synchronization primitives
Creating a file in the %AppData% directory
Creating a file in the %temp% directory
Launching a process
Creating a process with a hidden window
Creating a file
Launching cmd.exe command interpreter
Searching for synchronization primitives
Forced shutdown of a system process
Enabling autorun by creating a file
Unauthorized injection to a system process
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
obfuscated packed replace.exe
Link:
https://www.filescan.io/uploads/62333dbe0cd58dbd92aecacb/reports/a655798b-25fe-44f3-9a07-ce450cc6f1ff/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:
Malicious
Link:
https://analyze.intezer.com/analyses/5e1ed076-c9b7-40f8-8989-c631e4d1bd8f
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/958761
Signature
.NET source code contains very large strings
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Found malware configuration
Injects a PE file into a foreign processes
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)
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
Sigma detected: Suspicious Add Scheduled Task From User AppData Temp
Snort IDS alert for network traffic (e.g. based on Emerging Threat rules)
System process connects to network (likely due to code injection or exploit)
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
Writes to foreign memory regions
Yara detected AntiVM3
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 591238 Sample: vbc.exe Startdate: 17/03/2022 Architecture: WINDOWS Score: 100 39 www.treehousemunnar.com 2->39 41 treehousemunnar.com 2->41 49 Snort IDS alert for network traffic (e.g. based on Emerging Threat rules) 2->49 51 Found malware configuration 2->51 53 Malicious sample detected (through community Yara rule) 2->53 55 11 other signatures 2->55 11 vbc.exe 6 2->11         started        signatures3 process4 file5 33 C:\Users\user\AppData\...\krFFLtFjhg.exe, PE32 11->33 dropped 35 C:\Users\user\AppData\Local\...\tmpADBC.tmp, XML 11->35 dropped 37 C:\Users\user\AppData\Local\...\vbc.exe.log, ASCII 11->37 dropped 65 Uses schtasks.exe or at.exe to add and modify task schedules 11->65 67 Writes to foreign memory regions 11->67 69 Injects a PE file into a foreign processes 11->69 15 RegSvcs.exe 11->15         started        18 schtasks.exe 1 11->18         started        signatures6 process7 signatures8 71 Modifies the context of a thread in another process (thread injection) 15->71 73 Maps a DLL or memory area into another process 15->73 75 Sample uses process hollowing technique 15->75 77 2 other signatures 15->77 20 explorer.exe 15->20 injected 24 conhost.exe 18->24         started        process9 dnsIp10 43 www.antguy.com 173.231.37.115, 49806, 80 WEBNXUS United States 20->43 45 www.joinjem.com 13.224.96.16, 49845, 80 AMAZON-02US United States 20->45 47 www.founderqlxwfh.online 20->47 57 System process connects to network (likely due to code injection or exploit) 20->57 26 WWAHost.exe 20->26         started        signatures11 process12 signatures13 59 Modifies the context of a thread in another process (thread injection) 26->59 61 Maps a DLL or memory area into another process 26->61 63 Tries to detect virtualization through RDTSC time measurements 26->63 29 cmd.exe 1 26->29         started        process14 process15 31 conhost.exe 29->31         started       
Detection:
xloader
Create hunting rule
Link:
https://mwdb.cert.pl/sample/739e94a41234bd028fae27705c6d0ff5d8d9925068384bcdfe4cdecc1fb36e4f/
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
Create hunting rule
Status:
Malicious
First seen:
2022-03-17 11:22:31 UTC
File Type:
PE (.Net Exe)
Extracted files:
9
AV detection:
23 of 27 (85.19%)
Threat level:
  5/5
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Similar samples:
0da36b7f7e4b44b640ab5769532fdd7599032ca2b1d6b57807ba48ad1fa76780
Formbook
28562d1e97597dbe302d550277e91bd4aa6869bd3d356668bc7c48b2b6eaa3d1
Formbook
3e302b7a1b7d9862a5917a03e08205d8016cb2974566725e16926f4e6cff9c6b
Formbook
48b9bb721ab60fa9fc9feecef6c4e513b4bfc2049c72f187bdea927b20aa3898
Formbook
75362f20dab8d57db3ade6427e647b0bc01d8345ccfa9781d5778877f04f7fb5
Formbook
780e7dce2d7bd0d03577dcfaf9f2c52a6cb755e1efb3213516c3159a2a324f3a
Formbook
786698eab83f77c1fdc3d37daf49966befe788b0e85167083726354225176d1f
Formbook
cfd1a77378decd68cd7a59307b77b93247bdd91e00de5111ecae6b5658c8665f
Formbook
e0b985ed9547d4799d352c98ed428c0ba78e3abfec8897ec406ea07f306cb982
Formbook
e1589588b95e03844e0f5ccae574e722d68351c867b8535cd3df9467d381cdbb
Formbook
+ 14'275 additional samples on MalwareBazaar
Result
Malware family:
xloader
Create hunting rule
Score:
  10/10
Tags:
family:xloader campaign:e3b2 loader rat
Link:
https://tria.ge/reports/220317-q769aaefc8/
Behaviour
Creates scheduled task(s)
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Program crash
Suspicious use of SetThreadContext
Checks computer location settings
Uses the VBS compiler for execution
Xloader Payload
Xloader
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/62f7e57a-a75a-4297-b47e-75e860dc0324/
Parent samples :
98b2ac6e4cdb537c352e38576d8506017a03acd5ef9dc62ffe20e893b0f05a73
f024c838fba1619082aacb508ffec28e994d1a918b680d1ec2b7681ad3a46433
e1589588b95e03844e0f5ccae574e722d68351c867b8535cd3df9467d381cdbb
739e94a41234bd028fae27705c6d0ff5d8d9925068384bcdfe4cdecc1fb36e4f
8fb567155619feef229141bb4a87119700061289822b50e682534a2051c5a4f8
SH256 hash:
f6d6f9ad02e90f650535c535da78b4f627ce2a6f575f76fab7b307c408d4d10d
MD5 hash:
b846e6bb255085d9457272b8f0d3d488
SHA1 hash:
d80f3846a937cc09df9fe6e44295dfae53492411
Link:
https://www.unpac.me/results/62f7e57a-a75a-4297-b47e-75e860dc0324/
SH256 hash:
79823e47436e129def4fba8ee225347a05b7bb27477fb1cc8be6dc9e9ce75696
MD5 hash:
39f524c1ab0eb76dfd79b2852e5e8c39
SHA1 hash:
428018e1701006744e34480b0029982a76d8a57d
Link:
https://www.unpac.me/results/62f7e57a-a75a-4297-b47e-75e860dc0324/
SH256 hash:
739e94a41234bd028fae27705c6d0ff5d8d9925068384bcdfe4cdecc1fb36e4f
MD5 hash:
4931e28f298dce8158aa993a7f4bb964
SHA1 hash:
9c907a51a50d145410ec5ed57c0dcd19f852d089
Link:
https://www.unpac.me/results/62f7e57a-a75a-4297-b47e-75e860dc0324/
Malware family:
XLoader
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/739e94a41234/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/739e94a41234bd028fae27705c6d0ff5d8d9925068384bcdfe4cdecc1fb36e4f

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/251958/

Comments