MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 8f4a5af16c851db0d2a640ae0c1d6294d603d8995bf7666424388daa0c910fbf. 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: 16


Intelligence 16 IOCs YARA 3 File information Comments 1
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SHA256 hash: 8f4a5af16c851db0d2a640ae0c1d6294d603d8995bf7666424388daa0c910fbf
SHA3-384 hash: e38d26642eddfd8cc410682d72b9ac92024d78a3f82c643e9823e9485da39b93ab7b6e9f5d33a0396e89d52267a1b1cc
SHA1 hash: a4ff24228b6a3164116f983b5adf396673d65fd5
MD5 hash: 6f8e18d5f41729c6d60779641c802242
humanhash: colorado-louisiana-edward-black
File name:6f8e18d5f41729c6d60779641c802242
Download: download sample
Signature Formbook
Create hunting rule
File size:196'895 bytes
First seen:2022-04-25 17:07:57 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash 56a78d55f3f7af51443e58e0ce2fb5f6 (719 x GuLoader, 451 x Formbook, 295 x Loki)
ssdeep 6144:HNeZm+OqNhfR40C/EOBCGlour/2ArJKKLhEde:HNlLwo0C/Emp/2ArJFOde
TLSH T1F5141245A368C0F7E9A321322D269F1BAFBB92BA6110475F1B306F4E3C61583DB4E355
TrID 48.8% (.EXE) Win32 Executable MS Visual C++ (generic) (31206/45/13)
16.4% (.EXE) Win64 Executable (generic) (10523/12/4)
10.2% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
7.8% (.EXE) Win16 NE executable (generic) (5038/12/1)
7.0% (.EXE) Win32 Executable (generic) (4505/5/1)
File icon (PE):PE icon
dhash icon b2a89c96a2cada72 (2'283 x Formbook, 981 x Loki, 803 x AgentTesla)
Reporter zbetcheckin
Tags:32 exe FormBook

Intelligence

File Origin
# of uploads :
1
# of downloads :
291
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
formbook
Create hunting rule
ID:
1
File name:
http://192.3.152.135/prisca/scan01.exe
Verdict:
Malicious activity
Analysis date:
2022-04-25 13:46:58 UTC
Tags:
opendir loader formbook trojan stealer
Link:
https://app.any.run/tasks/26f3b928-e034-4728-9e4b-9c6a618b6dae

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/266511/
Detection(s):
SecuriteInfo.com.Trojan.NSISX.Spy.Gen.2.6896.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for synchronization primitives
Sending a custom TCP request
DNS request
Sending an HTTP GET request
Creating a window
Creating a file in the %temp% directory
Creating a process from a recently created file
Сreating synchronization primitives
Launching a process
Launching cmd.exe command interpreter
Unauthorized injection to a recently created process
Unauthorized injection to a recently created process by context flags manipulation
Unauthorized injection to a system process
Verdict:
Likely Malicious
Threat level:
  7.5/10
Confidence:
100%
Tags:
control.exe overlay packed shell32.dll
Link:
https://www.filescan.io/uploads/6266d585ede7e1c8161a0db8/reports/de70c01b-988a-4c32-af07-ce0b17df9649/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/ec3b80f6-1aeb-4d71-8538-2abd9f8f289d
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/982627
Signature
C2 URLs / IPs found in malware configuration
Found malware configuration
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: CMSTP Execution Process Creation
Tries to detect virtualization through RDTSC time measurements
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 615110 Sample: nFW3h2u5bR Startdate: 25/04/2022 Architecture: WINDOWS Score: 100 44 Found malware configuration 2->44 46 Malicious sample detected (through community Yara rule) 2->46 48 Multi AV Scanner detection for submitted file 2->48 50 4 other signatures 2->50 11 nFW3h2u5bR.exe 18 2->11         started        process3 file4 32 C:\Users\user\AppData\...\addirtjohb.exe, PE32 11->32 dropped 14 addirtjohb.exe 11->14         started        process5 signatures6 58 Multi AV Scanner detection for dropped file 14->58 60 Tries to detect virtualization through RDTSC time measurements 14->60 17 addirtjohb.exe 14->17         started        process7 signatures8 36 Modifies the context of a thread in another process (thread injection) 17->36 38 Maps a DLL or memory area into another process 17->38 40 Sample uses process hollowing technique 17->40 42 Queues an APC in another process (thread injection) 17->42 20 explorer.exe 17->20 injected process9 process10 22 cmstp.exe 20->22         started        signatures11 52 Modifies the context of a thread in another process (thread injection) 22->52 54 Maps a DLL or memory area into another process 22->54 56 Tries to detect virtualization through RDTSC time measurements 22->56 25 explorer.exe 1 151 22->25         started        28 cmd.exe 1 22->28         started        process12 dnsIp13 34 192.168.2.1 unknown unknown 25->34 30 conhost.exe 28->30         started        process14
Detection:
xloader
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Link:
https://mwdb.cert.pl/sample/8f4a5af16c851db0d2a640ae0c1d6294d603d8995bf7666424388daa0c910fbf/
Threat name:
Win32.Trojan.NSISInject
Create hunting rule
Status:
Malicious
First seen:
2022-04-25 03:27:11 UTC
File Type:
PE (Exe)
Extracted files:
4
AV detection:
23 of 26 (88.46%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=r5ffv4lmquo3buvgicxayhlcstlahwezlp3wmzbehcg2uderb67q._file
Verdict:
malicious
Label(s):
formbook
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Result
Malware family:
xloader
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Score:
  10/10
Tags:
family:xloader campaign:bs8f loader rat
Link:
https://tria.ge/reports/220425-vnjfbscgc5/
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
Enumerates physical storage devices
Suspicious use of SetThreadContext
Loads dropped DLL
Executes dropped EXE
Xloader Payload
Xloader
Unpacked files
SH256 hash:
6dee7ef88d48a2e274ac48a547a57d967edb2379c03793b69b34f79163e7f87c
MD5 hash:
3c0d2b85f4512466b26d8bc30d7741e0
SHA1 hash:
aefe2f70b4c187e6ec51ace05953b5f0ab4bf71c
Detections:
win_formbook_g0
Create hunting rule
win_formbook_auto
Create hunting rule
Link:
https://www.unpac.me/results/869fc232-957b-442d-8c56-442ba3cf83cf/
Parent samples :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 hash:
e8534af34fd3ab696bc773381fe61874c6ea796de8dcf5afdbda41dae0d59d37
MD5 hash:
6f5c06cd396aec0b415b58ba745f818d
SHA1 hash:
bdb95effc181656b4a44623ab3f830034d7c030e
Link:
https://www.unpac.me/results/869fc232-957b-442d-8c56-442ba3cf83cf/
SH256 hash:
b04f4ebfe4e4a819e8879ce599082c50074b5289c425b25da55e81322e22a0a4
MD5 hash:
3d81ef38ddb75e7b077b0b29ab44779e
SHA1 hash:
4ad4e8781bd5a6e7eadc60ddd3a2c310a1ab5dbf
Link:
https://www.unpac.me/results/869fc232-957b-442d-8c56-442ba3cf83cf/
SH256 hash:
8f4a5af16c851db0d2a640ae0c1d6294d603d8995bf7666424388daa0c910fbf
MD5 hash:
6f8e18d5f41729c6d60779641c802242
SHA1 hash:
a4ff24228b6a3164116f983b5adf396673d65fd5
Link:
https://www.unpac.me/results/869fc232-957b-442d-8c56-442ba3cf83cf/
Malware family:
XLoader
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/8f4a5af16c85/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/8f4a5af16c851db0d2a640ae0c1d6294d603d8995bf7666424388daa0c910fbf

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:malware_Formbook_strings
Create hunting rule
Author:JPCERT/CC Incident Response Group
Description:detect Formbook in memory
Reference:internal research
Rule name:pdb2
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Rule name:win_formbook_auto
Create hunting rule
Author:Felix Bilstein - yara-signator at cocacoding dot com
Description:Detects win.formbook.

File information

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

Web download

Formbook

Executable exe 8f4a5af16c851db0d2a640ae0c1d6294d603d8995bf7666424388daa0c910fbf

(this sample)

  
Delivery method
Distributed via web download
  
URLhaus
https://urlhaus.abuse.ch/url/2163855/
Cape
Cape
https://www.capesandbox.com/analysis/266511/

Comments


Avatar
zbet commented on 2022-04-25 17:07:59 UTC

url : hxxp://192.3.152.135/prisca/scan01.exe