MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 b4959f6906cb2816453fd47b371ff016bd899bc9a4e4161e06b80ee64a9f7fc5. 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
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SHA256 hash: b4959f6906cb2816453fd47b371ff016bd899bc9a4e4161e06b80ee64a9f7fc5
SHA3-384 hash: abb28dd11f6906b90ad681c9ae397c0ee9e04fdf01f463bbf88242adbbb735238382384d6b761a658edad334a850d57e
SHA1 hash: 5e0b043e1c5fc0acae2730b7af61512d4880c4cb
MD5 hash: 601cb87d67c4a5061370292274d4c8cf
humanhash: ceiling-bulldog-cup-echo
File name:vc.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:780'288 bytes
First seen:2022-05-19 14:31:06 UTC
Last seen:2022-05-19 16:01:30 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 12288:LSHa3SSyWzn/e346p5BijE1TcNu0TfogRBT8uBW7bvHF2EGCMV8:LSHa/yS/e46BijEZV0HzYu4vHAEpD
Threatray 15'874 similar samples on MalwareBazaar
TLSH T1FCF4125BB2A49B12C8190AF5D0E7541053E3F687A277D64B7E0862DA1E027F24DC9FCB
TrID 69.1% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
9.9% (.EXE) Win64 Executable (generic) (10523/12/4)
6.2% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
4.7% (.EXE) Win16 NE executable (generic) (5038/12/1)
4.2% (.EXE) Win32 Executable (generic) (4505/5/1)
Reporter pr0xylife
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
2
# of downloads :
270
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
formbook
Create hunting rule
ID:
1
File name:
vc.exe
Verdict:
Malicious activity
Analysis date:
2022-05-19 23:34:07 UTC
Tags:
formbook trojan stealer
Link:
https://app.any.run/tasks/57321848-894f-43f9-aeb8-f9d63c4a6c33

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/272605/
Detection(s):
SecuriteInfo.com.W32.AIDetectNet.01.31243.16227.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Сreating synchronization primitives
Searching for synchronization primitives
Launching a service
Creating a window
Sending a custom TCP request
Sending a UDP request
Launching a process
Launching cmd.exe command interpreter
Enabling autorun by creating a file
Unauthorized injection to a system process
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
control.exe obfuscated packed replace.exe
Link:
https://www.filescan.io/uploads/628654bdea9a076a43e556f2/reports/d173adee-dd94-4716-a397-6861f820948f/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
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/44831f8d-6eaa-4151-8ef7-e3c842c6ed50
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/997767
Signature
.NET source code contains method to dynamically call methods (often used by packers)
.NET source code contains potential unpacker
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 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 submitted file
Performs DNS queries to domains with low reputation
Queues an APC in another process (thread injection)
Sample uses process hollowing technique
Self deletion via cmd delete
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
Yara detected AntiVM3
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 630265 Sample: vc.exe Startdate: 19/05/2022 Architecture: WINDOWS Score: 100 31 www.lastting.xyz 2->31 35 Found malware configuration 2->35 37 Malicious sample detected (through community Yara rule) 2->37 39 Antivirus detection for URL or domain 2->39 41 10 other signatures 2->41 11 vc.exe 3 2->11         started        signatures3 process4 file5 29 C:\Users\user\AppData\Local\...\vc.exe.log, ASCII 11->29 dropped 53 Tries to detect virtualization through RDTSC time measurements 11->53 55 Injects a PE file into a foreign processes 11->55 15 vc.exe 11->15         started        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 Queues an APC in another process (thread injection) 15->63 18 explorer.exe 15->18 injected process9 dnsIp10 33 www.tudoadecorar.com 209.99.40.222, 49774, 80 CONFLUENCE-NETWORK-INCVG United States 18->33 43 System process connects to network (likely due to code injection or exploit) 18->43 22 systray.exe 18->22         started        signatures11 process12 signatures13 45 Self deletion via cmd delete 22->45 47 Modifies the context of a thread in another process (thread injection) 22->47 49 Maps a DLL or memory area into another process 22->49 51 Tries to detect virtualization through RDTSC time measurements 22->51 25 cmd.exe 1 22->25         started        process14 process15 27 conhost.exe 25->27         started       
Detection:
formbook
Create hunting rule
Link:
https://mwdb.cert.pl/sample/b4959f6906cb2816453fd47b371ff016bd899bc9a4e4161e06b80ee64a9f7fc5/
Threat name:
Win32.Trojan.FormBook
Create hunting rule
Status:
Malicious
First seen:
2022-05-19 14:32:07 UTC
File Type:
PE (.Net Exe)
Extracted files:
1
AV detection:
19 of 26 (73.08%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=wskz62igzmubmrj72r5toh7qc26ytg6jutsbmhqgxahomsu7p7cq._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Similar samples:
0c66120f301e6e13d6b760c5a63f36aed5fd338626a5abfab3f3750b7302d992
Formbook
2537720d5a68fae9bd2bd01925102deb25af75b86fbdc295f166efc97e636cfe
Formbook
4fd44b1855341a3f6f31e08e4ad288747ecb8e5b8637b95fff99aa689de07446
Formbook
5f3980e6686fe4d2dc41f24e42287d082cc894a57078e69e4a9554bec20ff5cc
Formbook
7930bf3f1be9acdf429e2433aa7d0c36985d9a97e580571fee1ffe8cbc0d8f5a
Formbook
96f1c5c1d23be195f1020daf8b7e179d77d6cd0b24cdda659b3af07da82b169c
Formbook
be44388c1d6cb611f833ee2a52ba342d542bd4ce6da7f4d87a013094fe200eea
Formbook
d8b05baee601302f22a561d0686689994296a4fa6ce256bcedb9bfa899553c07
Formbook
f0427effe53373b51d8b98f19d87a1e39cbcc49201d307526b5ced3406fed4e0
Formbook
+ 15'864 additional samples on MalwareBazaar
Result
Malware family:
formbook
Create hunting rule
Score:
  10/10
Tags:
family:formbook campaign:mi25 rat spyware stealer suricata trojan
Link:
https://tria.ge/reports/220519-rv9pbagdh3/
Behaviour
Modifies registry class
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
Suspicious use of SetThreadContext
Deletes itself
Formbook Payload
Formbook
suricata: ET MALWARE FormBook CnC Checkin (GET)
Unpacked files
SH256 hash:
2b61e74582f3b5c709117b6377925de304f3f4f0af30e6ebac683a555f812970
MD5 hash:
8f2d1267c2921f2fecc60c24291a41da
SHA1 hash:
1dd27d959a6e3cdf558342c10d113d18b7b91d3e
Detections:
win_formbook_g0
Create hunting rule
win_formbook_auto
Create hunting rule
Link:
https://www.unpac.me/results/d2ff59a1-2d23-4a55-8061-64f4e77e272d/
Parent samples :
be44388c1d6cb611f833ee2a52ba342d542bd4ce6da7f4d87a013094fe200eea
b4959f6906cb2816453fd47b371ff016bd899bc9a4e4161e06b80ee64a9f7fc5
ddefebb59f9e4b8fc00e13686024f829fbc7d82a2b0d07fd29748071708a5850
SH256 hash:
768225dc148f4cffaae54fea583deba2ec598426e59711b7ea1f069824bb9495
MD5 hash:
070eed50fbdb43973296d1b74445689c
SHA1 hash:
fe06cb0e70b215b6cc6ebdafd965df020bc80872
Link:
https://www.unpac.me/results/d2ff59a1-2d23-4a55-8061-64f4e77e272d/
SH256 hash:
7190cfa79c2cb712a94a0c84fd8fec88bf3eb34a5a9d5fb259029ae09e0de6de
MD5 hash:
19ba9de61dc5e9928c7dab3830670707
SHA1 hash:
d52909d1b03362fe26fe3b570c33cb24e692fb69
Link:
https://www.unpac.me/results/d2ff59a1-2d23-4a55-8061-64f4e77e272d/
SH256 hash:
09602efe05dc6b9738b23b91708978231d20c08329940541a086561795a6c9fd
MD5 hash:
1521132bd568891debf24b4973aaa24e
SHA1 hash:
393fafe43a177d02d2a8be164101fc2add2748dc
Link:
https://www.unpac.me/results/d2ff59a1-2d23-4a55-8061-64f4e77e272d/
SH256 hash:
de71e1c1dac1d656a529d7f072101d9c8177f3d3c666ed7994e1cfe67a93b0c2
MD5 hash:
d6514a3819e7518994f083b76b098048
SHA1 hash:
33d5d22aac25af5b616eae4cf17b5cfa8c80ecb6
Link:
https://www.unpac.me/results/d2ff59a1-2d23-4a55-8061-64f4e77e272d/
SH256 hash:
b4959f6906cb2816453fd47b371ff016bd899bc9a4e4161e06b80ee64a9f7fc5
MD5 hash:
601cb87d67c4a5061370292274d4c8cf
SHA1 hash:
5e0b043e1c5fc0acae2730b7af61512d4880c4cb
Link:
https://www.unpac.me/results/d2ff59a1-2d23-4a55-8061-64f4e77e272d/
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/b4959f6906cb2816453fd47b371ff016bd899bc9a4e4161e06b80ee64a9f7fc5

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: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.

Web download

Formbook

Executable exe b4959f6906cb2816453fd47b371ff016bd899bc9a4e4161e06b80ee64a9f7fc5

(this sample)

Cape
Cape
https://www.capesandbox.com/analysis/272605/
  
URLhaus
https://urlhaus.abuse.ch/url/2202680/
  
Delivery method
Distributed via web download

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