MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 8cfbf18a6d4b171e8bec81b40716b9214e4aec1246319dff997363dc67432a4e. 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: 8cfbf18a6d4b171e8bec81b40716b9214e4aec1246319dff997363dc67432a4e
SHA3-384 hash: d5555bad944d08bf30ff15a42ee9d9d3d07225b2cd6f7269afe4e34bc691397f50c118a9bab08935482f7d153670962f
SHA1 hash: 808e194f24d1f620284fb1afbe722bba41d3d83d
MD5 hash: a859b6df55fc1921cbf9e29b267b0252
humanhash: cat-tennessee-violet-beryllium
File name:a859b6df55fc1921cbf9e29b267b0252.exe
Download: download sample
Signature Formbook
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File size:778'240 bytes
First seen:2022-04-29 07:38:40 UTC
Last seen:2022-04-29 08:47:34 UTC
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:ILWJekPN3dW8V4Yz3C+zlD9oXLop3D21bdu8eTrfm2SZPz8dUcmBtDtgBjCLbcs1:UQxN3d7WqmLw3D2TxDPz8tQtD2B1sxr
Threatray 11'964 similar samples on MalwareBazaar
TLSH T186F402467A58D3F5EA390FB33E93810E5B523CF8AD41D45AAEE3F1864C716212E542B3
TrID 72.5% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
10.4% (.EXE) Win64 Executable (generic) (10523/12/4)
6.5% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
4.4% (.EXE) Win32 Executable (generic) (4505/5/1)
2.0% (.EXE) OS/2 Executable (generic) (2029/13)
Reporter abuse_ch
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
2
# of downloads :
251
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
a859b6df55fc1921cbf9e29b267b0252.exe
Verdict:
Malicious activity
Analysis date:
2022-04-29 07:43:50 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/a0ae4995-9f03-4c8b-b2c6-8a4d48ca1a5f

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/267737/
Detection(s):
SecuriteInfo.com.Trojan.Inject4.30970.30952.6438.UNOFFICIAL
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Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
obfuscated packed update.exe
Link:
https://www.filescan.io/uploads/626b962118191645e0c4e771/reports/404e2e0a-e7cf-4657-80d8-bf28daead0e6/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/ff3c4618-239c-4454-995c-36d4349cf1e1
Result
Threat name:
FormBook
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Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/985298
Signature
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)
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
Snort IDS alert for network traffic
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 netsh to modify the Windows network and firewall settings
Yara detected AntiVM3
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 617794 Sample: X5z2j2Ip2F.exe Startdate: 29/04/2022 Architecture: WINDOWS Score: 100 35 www.likesubfb567.xyz 2->35 37 www.skinnails.com 2->37 39 8 other IPs or domains 2->39 47 Snort IDS alert for network traffic 2->47 49 Malicious sample detected (through community Yara rule) 2->49 51 Multi AV Scanner detection for submitted file 2->51 55 4 other signatures 2->55 11 X5z2j2Ip2F.exe 3 2->11         started        signatures3 53 Performs DNS queries to domains with low reputation 35->53 process4 file5 33 C:\Users\user\AppData\...\X5z2j2Ip2F.exe.log, ASCII 11->33 dropped 69 Tries to detect virtualization through RDTSC time measurements 11->69 71 Injects a PE file into a foreign processes 11->71 15 X5z2j2Ip2F.exe 11->15         started        18 X5z2j2Ip2F.exe 11->18         started        20 X5z2j2Ip2F.exe 11->20         started        signatures6 process7 signatures8 73 Modifies the context of a thread in another process (thread injection) 15->73 75 Maps a DLL or memory area into another process 15->75 77 Sample uses process hollowing technique 15->77 79 Queues an APC in another process (thread injection) 15->79 22 explorer.exe 15->22 injected process9 dnsIp10 41 www.egremlinart.com 167.114.68.179, 49799, 80 OVHFR Canada 22->41 43 housederoyale.com 35.244.241.1, 49797, 80 GOOGLEUS United States 22->43 45 www.housederoyale.com 22->45 57 System process connects to network (likely due to code injection or exploit) 22->57 59 Uses netsh to modify the Windows network and firewall settings 22->59 26 netsh.exe 22->26         started        signatures11 process12 signatures13 61 Self deletion via cmd delete 26->61 63 Modifies the context of a thread in another process (thread injection) 26->63 65 Maps a DLL or memory area into another process 26->65 67 Tries to detect virtualization through RDTSC time measurements 26->67 29 cmd.exe 1 26->29         started        process14 process15 31 conhost.exe 29->31         started       
Detection:
formbook
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Link:
https://mwdb.cert.pl/sample/8cfbf18a6d4b171e8bec81b40716b9214e4aec1246319dff997363dc67432a4e/
Threat name:
ByteCode-MSIL.Trojan.RealProtectPENGSD
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Status:
Malicious
First seen:
2022-04-29 00:30:22 UTC
File Type:
PE (.Net Exe)
Extracted files:
7
AV detection:
16 of 26 (61.54%)
Threat level:
  5/5
Verdict:
malicious
Label(s):
formbook
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Similar samples:
119e4387c730d77226134d71e01db6a53f4eebbda8aeebf0ce9120003237b241
Formbook
1ba98686446412473dd5b0f72c5e9f7f9f278ffa3ad09879024df8b202992403
Formbook
548cd54ea92b18203289af4d7afee9d5d0af7420ef4a664eff96e942379eab63
Formbook
5e6d2bd21400ace31fbbe40c90d5bc5bab25868d252964b1034fc2584525709b
Formbook
7905618d53c7c0d9b949044ac76a711aed6ab9a5b6e7156c08871637a2858666
Formbook
b43ad09955e20f4a1ea20acf2e196d51099570ff03719435f8cbfe7de923c54e
Formbook
fec889ae8aee9a919471ea23e1603d9f76be40fb90b9298a8e7c607263acdd1b
Formbook
+ 11'954 additional samples on MalwareBazaar
Result
Malware family:
xloader
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Score:
  10/10
Tags:
family:xloader campaign:c0a7 loader rat
Link:
https://tria.ge/reports/220429-jgyqwseacq/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of WriteProcessMemory
Suspicious use of SetThreadContext
Xloader Payload
Xloader
Unpacked files
SH256 hash:
544af89ae56d67b36786c472ffd21aacbeb71d4d268358bbefc8c01003a8f7ec
MD5 hash:
0b6f9d724234fa2e61a6bf386779aa21
SHA1 hash:
dd3eb5f83bf534edb8aefacd88e47751db8901ac
Detections:
win_formbook_g0
Create hunting rule
win_formbook_auto
Create hunting rule
Link:
https://www.unpac.me/results/b5b07fbc-41de-4e1c-981b-87fd0fc5847f/
Parent samples :
9afa5a53a2f68b1eb6dcc22a14b1b23e03b02da4a5501d7e7cbcb0a4d694f55d
f239a57a44872a5cc2f4facc6b62acb8ea45c39f2bad517991ca52a682c46d91
8cfbf18a6d4b171e8bec81b40716b9214e4aec1246319dff997363dc67432a4e
SH256 hash:
92fc621e886ad486195efe1b074a5186c27599e3dd4d71c72cae3078b8660ae2
MD5 hash:
e80503550a2aa077f62f09c7dc6be7e4
SHA1 hash:
f93e86c149eac50b611a1f9a7b59f5d81026262c
Link:
https://www.unpac.me/results/b5b07fbc-41de-4e1c-981b-87fd0fc5847f/
SH256 hash:
9dff19a067d69bbccff4fdc0cba44923f4f8959dd4e5216ae486faf76f508e90
MD5 hash:
dab9d3426a2c85a659548e11f1b60809
SHA1 hash:
e425110a81e72a56b56cf2ba0661ae10cafb42d7
Link:
https://www.unpac.me/results/b5b07fbc-41de-4e1c-981b-87fd0fc5847f/
SH256 hash:
66b06d1983a157fcaa6b011d304a78dfa8187807ca2c3238145b1a4eedd33681
MD5 hash:
6c805c6d2d76ec18f9a1a294b3de5d3c
SHA1 hash:
a6923c8f71b36116bfe08351da4c5d50e140beba
Link:
https://www.unpac.me/results/b5b07fbc-41de-4e1c-981b-87fd0fc5847f/
SH256 hash:
8cfbf18a6d4b171e8bec81b40716b9214e4aec1246319dff997363dc67432a4e
MD5 hash:
a859b6df55fc1921cbf9e29b267b0252
SHA1 hash:
808e194f24d1f620284fb1afbe722bba41d3d83d
Link:
https://www.unpac.me/results/b5b07fbc-41de-4e1c-981b-87fd0fc5847f/
Malware family:
XLoader
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/8cfbf18a6d4b/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Formbook
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/8cfbf18a6d4b171e8bec81b40716b9214e4aec1246319dff997363dc67432a4e

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
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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.

Web download

Formbook

Executable exe 8cfbf18a6d4b171e8bec81b40716b9214e4aec1246319dff997363dc67432a4e

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/2158313/
  
Delivery method
Distributed via web download
Cape
Cape
https://www.capesandbox.com/analysis/267737/

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