MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 aa9db27b2063f5aee9f97d7d86b883686f51bd030d0b38d6daaed3629a230a7d. 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
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SHA256 hash: aa9db27b2063f5aee9f97d7d86b883686f51bd030d0b38d6daaed3629a230a7d
SHA3-384 hash: fb6ab4dd71163643ad06a2357545002dba1ecccb3e893fb1ed656a423873c48396f259ad05e7cd86f953d7843723b025
SHA1 hash: 17680094e9bdefe2f5205729f2b55be2ffca81fa
MD5 hash: f9a20cce97d6efd9e8d071420a8858b7
humanhash: undress-sierra-item-asparagus
File name:triage_dropped_file
Download: download sample
Signature Formbook
Create hunting rule
File size:277'735 bytes
First seen:2022-04-13 13:31:16 UTC
Last seen:2022-04-14 08:06:45 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash 3abe302b6d9a1256e6a915429af4ffd2 (277 x GuLoader, 38 x Formbook, 25 x Loki)
ssdeep 6144:zjg3mLX/fN+E4YQaTjiqyYUhOFjuYCN+E+2H:o3mD3N+E4/m4/SCNr
Threatray 15'027 similar samples on MalwareBazaar
TLSH T1B14412A83DD1D8A3E17643F22EF3473ED37A9C8641257E8767100FF76A916A152046E2
File icon (PE):PE icon
dhash icon b2a89c96a2cada72 (2'283 x Formbook, 981 x Loki, 803 x AgentTesla)
Reporter malwarelabnet
Tags:exe FormBook xloader

Intelligence

File Origin
# of uploads :
2
# of downloads :
406
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
formbook
Create hunting rule
ID:
1
File name:
triage_dropped_file
Verdict:
Malicious activity
Analysis date:
2022-04-13 14:12:55 UTC
Tags:
formbook trojan stealer
Link:
https://app.any.run/tasks/10fc12ad-fd67-4b23-83ae-88ef00c7b767

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/263454/
Detection(s):
SecuriteInfo.com.Trojan.NSISX.Spy.Gen.2.19003.15891.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Creating a file in the %temp% directory
Creating a process from a recently created file
Searching for the window
Сreating synchronization primitives
Launching a process
Launching cmd.exe command interpreter
Searching for synchronization primitives
Sending a custom TCP request
DNS request
Sending an HTTP GET request
Unauthorized injection to a recently created process by context flags manipulation
Unauthorized injection to a system process
Result
Malware family:
n/a
Score:
  5/10
Tags:
n/a
Link:
https://dragonfly.certego.net/analysis/13772/overview
Behaviour
MalwareBazaar
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
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/ddd43d63-7623-4884-a949-cc9ef51cc74f
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/976229
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
Tries to detect virtualization through RDTSC time measurements
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 608716 Sample: triage_dropped_file Startdate: 13/04/2022 Architecture: WINDOWS Score: 100 42 Found malware configuration 2->42 44 Malicious sample detected (through community Yara rule) 2->44 46 Multi AV Scanner detection for submitted file 2->46 48 3 other signatures 2->48 10 triage_dropped_file.exe 18 2->10         started        process3 file4 32 C:\Users\user\AppData\Local\...\vvywdeos.exe, PE32 10->32 dropped 13 vvywdeos.exe 1 10->13         started        process5 signatures6 56 Multi AV Scanner detection for dropped file 13->56 58 Tries to detect virtualization through RDTSC time measurements 13->58 16 vvywdeos.exe 13->16         started        19 conhost.exe 13->19         started        process7 signatures8 34 Modifies the context of a thread in another process (thread injection) 16->34 36 Maps a DLL or memory area into another process 16->36 38 Sample uses process hollowing technique 16->38 40 Queues an APC in another process (thread injection) 16->40 21 systray.exe 16->21         started        24 explorer.exe 16->24 injected process9 signatures10 50 Modifies the context of a thread in another process (thread injection) 21->50 52 Maps a DLL or memory area into another process 21->52 54 Tries to detect virtualization through RDTSC time measurements 21->54 26 cmd.exe 1 21->26         started        28 explorer.exe 2 154 21->28         started        process11 process12 30 conhost.exe 26->30         started       
Detection:
xloader
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Link:
https://mwdb.cert.pl/sample/aa9db27b2063f5aee9f97d7d86b883686f51bd030d0b38d6daaed3629a230a7d/
Threat name:
Win32.Trojan.NSISInject
Create hunting rule
Status:
Malicious
First seen:
2022-04-13 10:23:34 UTC
File Type:
PE (Exe)
Extracted files:
4
AV detection:
21 of 26 (80.77%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=vko3e6zamp2252pzpv6ynoednbxvdpidbuftrvw2v3jwfgrdbj6q._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Similar samples:
0da36b7f7e4b44b640ab5769532fdd7599032ca2b1d6b57807ba48ad1fa76780
Formbook
232a16efaec47e6d4fc8f5318ed9d9d58198daef519f30a5d9147d38f293638c
Formbook
45d9826dfa111b1780e3322915de84c8e4a6471ef51fd4819ce88b9bc6335019
Formbook
73f458d7e38ab748b7b7d3b3e680db9eb08d845c1b1b7c935a6ee453d8f03358
Formbook
75362f20dab8d57db3ade6427e647b0bc01d8345ccfa9781d5778877f04f7fb5
Formbook
75e51d5e7662ad2c7ee23822ebf5246ce2d3257734ef87883f57bbcffe13c5d2
Formbook
8e2fa281cc72512de1fc53eb27a9c04a524ce87c3cdf5932931ea3dc463a459a
Formbook
b1d74737f5430e16cb2ee4707ac986ba21fc2252d50315d2b4a77e4f278b1741
Formbook
ea928c88deed19528dead0fc786936f6ac102f94905ce1bff6df678b7c560726
Formbook
+ 15'017 additional samples on MalwareBazaar
Result
Malware family:
xloader
Create hunting rule
Score:
  10/10
Tags:
family:xloader campaign:p00n loader rat suricata
Link:
https://tria.ge/reports/220413-qsyctscdar/
Behaviour
Suspicious use of FindShellTrayWindow
Suspicious use of SendNotifyMessage
Suspicious use of WriteProcessMemory
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Enumerates physical storage devices
Suspicious use of SetThreadContext
Loads dropped DLL
Executes dropped EXE
Xloader Payload
Xloader
suricata: ET MALWARE FormBook CnC Checkin (GET)
Unpacked files
SH256 hash:
8935e8ba738a3040a1882a0482232cbb816b3ce6e3ff272e4d72422372478032
MD5 hash:
8a53ca9e33c7481985b9a79738e2827e
SHA1 hash:
2d530d8fd20e27b741e00205c584a120c52a5044
Detections:
win_formbook_g0
Create hunting rule
win_formbook_auto
Create hunting rule
Link:
https://www.unpac.me/results/190187d6-de49-481e-9c71-1854c0e118b5/
Parent samples :
45d9826dfa111b1780e3322915de84c8e4a6471ef51fd4819ce88b9bc6335019
aa9db27b2063f5aee9f97d7d86b883686f51bd030d0b38d6daaed3629a230a7d
SH256 hash:
9b4b5b5048151f723ca57f67e9107e24c844f1be62b977efaeabedb5d620eaf5
MD5 hash:
f357de702f7b08ff1b60c2ca5bbdafa2
SHA1 hash:
bc9e18bfbb4a9ce14351dfdffc3f57d22b40831a
Link:
https://www.unpac.me/results/190187d6-de49-481e-9c71-1854c0e118b5/
SH256 hash:
aa9db27b2063f5aee9f97d7d86b883686f51bd030d0b38d6daaed3629a230a7d
MD5 hash:
f9a20cce97d6efd9e8d071420a8858b7
SHA1 hash:
17680094e9bdefe2f5205729f2b55be2ffca81fa
Link:
https://www.unpac.me/results/190187d6-de49-481e-9c71-1854c0e118b5/
Malware family:
XLoader
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/aa9db27b2063/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Legit
Score:
0.18
Link:
https://yomi.yoroi.company/submissions/aa9db27b2063f5aee9f97d7d86b883686f51bd030d0b38d6daaed3629a230a7d

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:Ins_NSIS_Buer_Nov_2020_1
Create hunting rule
Author:Arkbird_SOLG
Description:Detect NSIS installer used for Buer loader
Rule name:malware_Formbook_strings
Create hunting rule
Author:JPCERT/CC Incident Response Group
Description:detect Formbook in memory
Reference:internal research
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 aa9db27b2063f5aee9f97d7d86b883686f51bd030d0b38d6daaed3629a230a7d

(this sample)

Cape
Cape
https://www.capesandbox.com/analysis/263454/
  
URLhaus
https://urlhaus.abuse.ch/url/2147118/
  
Delivery method
Distributed via web download

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