MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 3bbb41e4800c8e28f22939e4e966ea372c671bf54b736aa698b7ec4b0f6f09b4. 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: 13


Intelligence 13 IOCs YARA 2 File information Comments
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SHA256 hash: 3bbb41e4800c8e28f22939e4e966ea372c671bf54b736aa698b7ec4b0f6f09b4
SHA3-384 hash: 66cabb551bdbbb28594bc0264ddcedaf5179adb7385de72625c51dad31242658c28fa9d8c95ce0cc02279ff682fd0bb6
SHA1 hash: 94bff85e50d9291af06680ee97c883bc60ac7129
MD5 hash: 272cac52301b235610480974ab31be48
humanhash: avocado-glucose-fruit-golf
File name:OC 155093617482.exe
Download: download sample
Signature Formbook
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File size:1'103'360 bytes
First seen:2022-10-12 15:40:34 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'742 x AgentTesla, 19'607 x Formbook, 12'242 x SnakeKeylogger)
ssdeep 12288:8OqZhZk0lhF3cwvwh7xz2j2oQ0QXuLj5tP8MicAiO+ZLEqlDmNL6QkSH4fo:5ww0lhF3cwothgLkNcAB+n8NWQkSW
TLSH T150355A3626959903D1593232C5C3D1B327FA9E506122D2C76EC72FAF7C463BBA54238B
TrID 64.2% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
11.5% (.SCR) Windows screen saver (13101/52/3)
9.2% (.EXE) Win64 Executable (generic) (10523/12/4)
5.7% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
3.9% (.EXE) Win32 Executable (generic) (4505/5/1)
Reporter Racco42
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
1
# of downloads :
223
Origin country :
n/a
Vendor Threat Intelligence
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/319453/
Detection(s):
SecuriteInfo.com.Win32.PWSX-gen.28944.23156.UNOFFICIAL
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Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Creating a window
DNS request
Launching a process
Unauthorized injection to a system process
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
packed
Link:
https://www.filescan.io/uploads/6346e00e0d2bcf0ff9a288f7/reports/6ecc3919-66eb-4992-81ae-96a89de0a88e/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
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Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/cafdeb35-9ad5-4f06-980d-50190670cd23
Result
Threat name:
FormBook
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Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1088937
Signature
.NET source code contains potential unpacker
C2 URLs / IPs found in malware configuration
Deletes itself after installation
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
Queues an APC in another process (thread injection)
Sample uses process hollowing technique
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 harvest and steal browser information (history, passwords, etc)
Tries to steal Mail credentials (via file / registry access)
Uses netstat to query active network connections and open ports
Yara detected AntiVM3
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 721537 Sample: OC 155093617482.exe Startdate: 12/10/2022 Architecture: WINDOWS Score: 100 31 www.clipnong.site 2->31 33 clipnong.site 2->33 39 Snort IDS alert for network traffic 2->39 41 Malicious sample detected (through community Yara rule) 2->41 43 Multi AV Scanner detection for submitted file 2->43 45 6 other signatures 2->45 9 OC 155093617482.exe 3 2->9         started        signatures3 process4 file5 23 C:\Users\user\...\OC 155093617482.exe.log, ASCII 9->23 dropped 55 Injects a PE file into a foreign processes 9->55 13 OC 155093617482.exe 9->13         started        signatures6 process7 signatures8 57 Modifies the context of a thread in another process (thread injection) 13->57 59 Maps a DLL or memory area into another process 13->59 61 Sample uses process hollowing technique 13->61 63 Queues an APC in another process (thread injection) 13->63 16 explorer.exe 13->16 injected process9 dnsIp10 25 sbsfe-p9r.geo.mf0.yahoodns.net 67.195.197.24, 49709, 80 YAHOO-3US United States 16->25 27 www.rattret.bar 188.114.96.3, 49713, 49714, 49715 CLOUDFLARENETUS European Union 16->27 29 3 other IPs or domains 16->29 35 System process connects to network (likely due to code injection or exploit) 16->35 37 Uses netstat to query active network connections and open ports 16->37 20 NETSTAT.EXE 13 16->20         started        signatures11 process12 signatures13 47 Tries to steal Mail credentials (via file / registry access) 20->47 49 Tries to harvest and steal browser information (history, passwords, etc) 20->49 51 Deletes itself after installation 20->51 53 2 other signatures 20->53
Detection:
formbook
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Link:
https://mwdb.cert.pl/sample/3bbb41e4800c8e28f22939e4e966ea372c671bf54b736aa698b7ec4b0f6f09b4/
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
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Status:
Malicious
First seen:
2022-10-12 15:41:11 UTC
File Type:
PE (.Net Exe)
Extracted files:
21
AV detection:
16 of 26 (61.54%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=ho5udzeabshcr4rjhhsoszxkg4wgog7vjnzwvjuyw7wewd3pbg2a._file
Verdict:
malicious
Label(s):
formbook
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Result
Malware family:
xloader
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Score:
  10/10
Tags:
family:formbook family:xloader campaign:itu3 loader rat spyware stealer trojan
Link:
https://tria.ge/reports/221012-s4rershgf7/
Behaviour
Modifies Internet Explorer settings
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
Checks computer location settings
Loads dropped DLL
Reads user/profile data of web browsers
Blocklisted process makes network request
Formbook
Xloader
Verdict:
Suspicious
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/61d6165f-a52f-46ca-8d02-59e293036e03
Unpacked files
SH256 hash:
ea4ec692582fb5b0c30f8a85638325a7d753f6cef64b302c0b55e7fa9b5aac2f
MD5 hash:
bf2cd621205b7153a469f83658170b1c
SHA1 hash:
678800bf32be04ae7e264eeae97f94345d0f37c9
Detections:
XLoader
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win_formbook_auto
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win_formbook_g0
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Link:
https://www.unpac.me/results/a8a30d2f-326c-498b-92f4-67fd050afdde/
Parent samples :
3bbb41e4800c8e28f22939e4e966ea372c671bf54b736aa698b7ec4b0f6f09b4
7ab48c01b672639104a63c4ea796f1056f273ab7be0413494837cf99f3a30436
SH256 hash:
58e8860fea7ef5aa65ea2f05a01479174bf8c44f377455da407fbc478b1add67
MD5 hash:
939f64f41582e250aa122695526c8f6b
SHA1 hash:
6fad03ef802de485312c7f7ed8334699a994d850
Link:
https://www.unpac.me/results/a8a30d2f-326c-498b-92f4-67fd050afdde/
SH256 hash:
a09468c9d3d29de94520988d7cf5e0e5a8119cce8236fb05038d82ec65012f24
MD5 hash:
a4f7e09cebf8e60279e0c81b6abd0c24
SHA1 hash:
f5fa3d0905e554d54ab90d076ee1d654dee8536e
Link:
https://www.unpac.me/results/a8a30d2f-326c-498b-92f4-67fd050afdde/
SH256 hash:
af7ac1171b44c9a949ad80bfaf05095048d0b74cfb527f66479e22f47d340110
MD5 hash:
f696dc0e00cb8f70799ac3fcaa5f9f6a
SHA1 hash:
cde2283de5b89639ea52f6388feef8f77efc63ce
Link:
https://www.unpac.me/results/a8a30d2f-326c-498b-92f4-67fd050afdde/
SH256 hash:
bce827f7ad757d5705ee0c952c6a62839121f92a9bb7ed076b8426b1a109cb4f
MD5 hash:
b9e0ad9d5a43ca168761029a05e3d3a6
SHA1 hash:
cc46a0e12e198aee0d1bcf64cc6557a7d1cb8a27
Link:
https://www.unpac.me/results/a8a30d2f-326c-498b-92f4-67fd050afdde/
SH256 hash:
e20ec8f3c957bcb6a194ef688bae8af2015cfffb20e7baf8b2114d7b70ade4ee
MD5 hash:
35cb29046968faca7f3f3b4463449b6c
SHA1 hash:
088c8c30ec1bece0a4b5bbfe3982b073f8b95598
Link:
https://www.unpac.me/results/a8a30d2f-326c-498b-92f4-67fd050afdde/
SH256 hash:
3bbb41e4800c8e28f22939e4e966ea372c671bf54b736aa698b7ec4b0f6f09b4
MD5 hash:
272cac52301b235610480974ab31be48
SHA1 hash:
94bff85e50d9291af06680ee97c883bc60ac7129
Link:
https://www.unpac.me/results/a8a30d2f-326c-498b-92f4-67fd050afdde/
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Malicious File
Score:
0.81
Link:
https://yomi.yoroi.company/submissions/3bbb41e4800c8e28f22939e4e966ea372c671bf54b736aa698b7ec4b0f6f09b4

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.

Malspam

Formbook

Executable exe 3bbb41e4800c8e28f22939e4e966ea372c671bf54b736aa698b7ec4b0f6f09b4

(this sample)

  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/319453/

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