MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 728b23f75c1140a1763dd7c75083f2ae57afeb6ffa3d7b33a9ba1b4904c4566d. 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: 14


Intelligence 14 IOCs YARA 3 File information Comments
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SHA256 hash: 728b23f75c1140a1763dd7c75083f2ae57afeb6ffa3d7b33a9ba1b4904c4566d
SHA3-384 hash: 0464576e867885173f4d0e18e306e65862c934850c46411bd3f8fe9778fdb244835d3ad5b3031fc14f781db599187e61
SHA1 hash: 6b8fccadcf1977f5850faa1c47617343fafc0ff4
MD5 hash: c4a1bdd685e346b7604f93357a922875
humanhash: maine-steak-whiskey-robert
File name:vbc.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:368'640 bytes
First seen:2021-11-09 11:54:05 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'652 x AgentTesla, 19'463 x Formbook, 12'204 x SnakeKeylogger)
ssdeep 6144:hC9EDghMkMs4P2CW2RT9cERCtbjqg2vcy8a9KI75uhPLTDcfAYGQLomQVHb:h1DghTjPymtvqg4ya9R75AzOAcomQV7
Threatray 11'112 similar samples on MalwareBazaar
TLSH T1587412657748A81EC899157388DE7EA043B8788BB4A3D32E779C73B418923E31513BDD
Reporter pr0xylife
Tags:exe FormBook xloader

Intelligence

File Origin
# of uploads :
1
# of downloads :
146
Origin country :
n/a
Vendor Threat Intelligence
Detection:
Formbook
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Link:
https://www.capesandbox.com/analysis/204462/
Detection(s):
SecuriteInfo.com.Trojan.Inject4.18950.UNOFFICIAL
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Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
obfuscated packed
Link:
https://www.filescan.io/uploads/618a6199175442ca93a907bb/reports/0aa71c18-e413-40d4-b79b-db7928242acc/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
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Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/0f988d60-e5d7-41eb-9bc7-c071b17143ba
Result
Threat name:
FormBook
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Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/885941
Signature
.NET source code contains potential unpacker
Adds a directory exclusion to Windows Defender
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Found malware configuration
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)
Performs DNS queries to domains with low reputation
Queues an APC in another process (thread injection)
Sample uses process hollowing technique
Sigma detected: Powershell Defender Exclusion
Sigma detected: Suspicius Add 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
Yara detected AntiVM3
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 518412 Sample: vbc.exe Startdate: 09/11/2021 Architecture: WINDOWS Score: 100 35 www.mattlambert.xyz 2->35 37 www.joy1263.com 2->37 39 7 other IPs or domains 2->39 47 Snort IDS alert for network traffic (e.g. based on Emerging Threat rules) 2->47 49 Found malware configuration 2->49 51 Malicious sample detected (through community Yara rule) 2->51 53 9 other signatures 2->53 9 vbc.exe 7 2->9         started        signatures3 process4 file5 31 C:\Users\user\AppData\...\uZlkYhlkeLeaKC.exe, PE32 9->31 dropped 33 C:\Users\user\AppData\Local\...\tmpAA68.tmp, XML 9->33 dropped 59 Uses schtasks.exe or at.exe to add and modify task schedules 9->59 61 Adds a directory exclusion to Windows Defender 9->61 63 Tries to detect virtualization through RDTSC time measurements 9->63 13 vbc.exe 9->13         started        16 powershell.exe 25 9->16         started        18 schtasks.exe 1 9->18         started        signatures6 process7 signatures8 71 Modifies the context of a thread in another process (thread injection) 13->71 73 Maps a DLL or memory area into another process 13->73 75 Sample uses process hollowing technique 13->75 77 Queues an APC in another process (thread injection) 13->77 20 explorer.exe 13->20 injected 24 conhost.exe 16->24         started        26 conhost.exe 18->26         started        process9 dnsIp10 41 www.maikoufarm.com 118.27.122.222, 49815, 80 INTERQGMOInternetIncJP Japan 20->41 43 www.mmj0115.xyz 101.132.116.91, 49821, 80 CNNIC-ALIBABA-CN-NET-APHangzhouAlibabaAdvertisingCoLtd China 20->43 45 9 other IPs or domains 20->45 55 System process connects to network (likely due to code injection or exploit) 20->55 57 Performs DNS queries to domains with low reputation 20->57 28 help.exe 20->28         started        signatures11 process12 signatures13 65 Modifies the context of a thread in another process (thread injection) 28->65 67 Maps a DLL or memory area into another process 28->67 69 Tries to detect virtualization through RDTSC time measurements 28->69
Detection:
xloader
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Link:
https://mwdb.cert.pl/sample/728b23f75c1140a1763dd7c75083f2ae57afeb6ffa3d7b33a9ba1b4904c4566d/
Threat name:
ByteCode-MSIL.Spyware.Noon
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Status:
Malicious
First seen:
2021-11-09 11:55:07 UTC
AV detection:
14 of 27 (51.85%)
Threat level:
  2/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=okfsh524cfakc5r527dvba7svzl2723p7i6xwm5jxinusbgekzwq._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Similar samples:
1e5bb5e00fddfcc62c8bfe71b46a4c8c6c22986c7a51931d16b8ddc465170d72
Formbook
3490cb5fd9a372722f95ed69c41e23d5cd274ce6b3c024ec1731962a380409d6
Formbook
5ee2ae88f934642edb29747732a0168ba8bcb981fcc6945a9a9a37b530ffb4b7
Formbook
a67796ab32ba225ab871923548c5b98147a848edeffb72089724d6131d20dc0c
Formbook
ae55ee08f18b57a38a47ed9bc161b7833e35c31b014e8579ae904a2d4d7c63e3
Formbook
d079479dd85fb94fe08f6cd70cfff35e39c14294174a8ed6f9b480ffc1cbc9b2
Formbook
d72799be34725e6cc9665e17895075ad8c5aa22835440abb4a342a202426379c
Formbook
+ 11'102 additional samples on MalwareBazaar
Result
Malware family:
xloader
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Score:
  10/10
Tags:
family:xloader campaign:ht08 loader rat
Link:
https://tria.ge/reports/211109-n2yc3sfbe7/
Behaviour
Creates scheduled task(s)
Gathers network information
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
Uses the VBS compiler for execution
Xloader Payload
Xloader
Malware Config
C2 Extraction:
http://www.septemberstockevent200.com/ht08/
Unpacked files
SH256 hash:
e028f56526a3b88dde874b9248c8061e7d381b70d2d4b3b0a75cbabd990a1b49
MD5 hash:
c402255ceeaf32c98b104005a6bcd47f
SHA1 hash:
6db848aa1a79cc5451cb0ba10225d2e7cea350e8
Detections:
win_formbook_g0
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win_formbook_auto
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Link:
https://www.unpac.me/results/a83765f1-de0d-4384-bed7-7ebfdb37fc02/
Parent samples :
728b23f75c1140a1763dd7c75083f2ae57afeb6ffa3d7b33a9ba1b4904c4566d
1ba605473b6fc3b244f25a8838e41a642dbf9566d347d3ea084e96bbe88aebde
SH256 hash:
91655863c7906a8d20c7c782144f553c027843a72f2fdab2b1ccc80808083af0
MD5 hash:
b5044dd0e9c91b1a9185d491da7d07f2
SHA1 hash:
a9ff8129771d85f77b6a145f750c70e53f51125e
Link:
https://www.unpac.me/results/a83765f1-de0d-4384-bed7-7ebfdb37fc02/
SH256 hash:
9de587352a17507687f60abacab13df586f2fb7d22bec610b7d97b104c16ac76
MD5 hash:
87b42ba2b7f373bbe69dbdadb8c5f37a
SHA1 hash:
01f1e005fdc1f75d57b9dba6a94f456588f69eb3
Link:
https://www.unpac.me/results/a83765f1-de0d-4384-bed7-7ebfdb37fc02/
SH256 hash:
728b23f75c1140a1763dd7c75083f2ae57afeb6ffa3d7b33a9ba1b4904c4566d
MD5 hash:
c4a1bdd685e346b7604f93357a922875
SHA1 hash:
6b8fccadcf1977f5850faa1c47617343fafc0ff4
Link:
https://www.unpac.me/results/a83765f1-de0d-4384-bed7-7ebfdb37fc02/
Malware family:
XLoader
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Verdict:
Malicious
Link:
https://www.vmray.com/analyses/728b23f75c11/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/728b23f75c1140a1763dd7c75083f2ae57afeb6ffa3d7b33a9ba1b4904c4566d

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
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Rule name:pe_imphash
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Rule name:Skystars_Malware_Imphash
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Author:Skystars LightDefender
Description:imphash

File information

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

Cape
Cape
https://www.capesandbox.com/analysis/204462/

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