MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 10cb1836c9ad0c738ca0c95b748075b4c035f6edd8c07f41735a1ebc9c352eff. 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: 10


Intelligence 10 IOCs YARA 6 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 10cb1836c9ad0c738ca0c95b748075b4c035f6edd8c07f41735a1ebc9c352eff
SHA3-384 hash: d2fd37764798f1fb80786aeba9d2a05f995cc83eb38c0e8079af12e43602391f86db8be7a5a66e51f9d7a5e2287a738e
SHA1 hash: 2d6a265de3b78834af8c11ee4841dd416df6b0f2
MD5 hash: 2137a6b443101101cd8fe7e02551be5a
humanhash: video-minnesota-six-whiskey
File name:2137a6b443101101cd8fe7e02551be5a.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:443'392 bytes
First seen:2021-11-15 09:02:05 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'742 x AgentTesla, 19'606 x Formbook, 12'242 x SnakeKeylogger)
ssdeep 12288:n7v6e5F2Y/R3f2awpgSEeZVBroncWixSaXIq6UazqTJhq4:T6WR3uaagMtrocWoSaXIqE4
Threatray 9'718 similar samples on MalwareBazaar
TLSH T197948F07F317460AD82CABB4DEB77B200725BBB2D4625707D3D5652F601E2FA7A90742
File icon (PE):PE icon
dhash icon 69d4b26868b2cc71 (23 x Formbook, 6 x SnakeKeylogger, 2 x AgentTesla)
Reporter abuse_ch
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
1
# of downloads :
116
Origin country :
n/a
Vendor Threat Intelligence
Detection:
Formbook
Create hunting rule
Link:
https://www.capesandbox.com/analysis/205829/
Detection(s):
Win.Dropper.Generic-7113183-0
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Sending a UDP request
Creating a file in the %temp% directory
Creating a process from a recently created file
Creating a file
Creating a window
Searching for the window
Unauthorized injection to a recently created process
Unauthorized injection to a recently created process by context flags manipulation
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
obfuscated packed
Link:
https://www.filescan.io/uploads/61922249a00afa9663a82551/reports/8525fc4a-eb30-4e2d-a47c-921018e7afd9/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.
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/a6fd929d-fd5a-4e3a-b204-08ec94af9053
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/889320
Signature
.NET source code contains potential unpacker
Allocates memory in foreign processes
C2 URLs / IPs found in malware configuration
Detected FormBook malware
Found malware configuration
Injects a PE file into a foreign processes
Machine Learning detection for dropped file
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 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
Tries to harvest and steal browser information (history, passwords, etc)
Tries to steal Mail credentials (via file / registry access)
Writes to foreign memory regions
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 521795 Sample: F1j8OOMaAn.exe Startdate: 15/11/2021 Architecture: WINDOWS Score: 100 41 www.logos-performance.com 2->41 43 Found malware configuration 2->43 45 Malicious sample detected (through community Yara rule) 2->45 47 Multi AV Scanner detection for submitted file 2->47 49 5 other signatures 2->49 11 F1j8OOMaAn.exe 4 2->11         started        signatures3 process4 file5 35 C:\Users\user\AppData\...\F1j8OOMaAn.exe, PE32 11->35 dropped 37 C:\Users\...\F1j8OOMaAn.exe:Zone.Identifier, ASCII 11->37 dropped 39 C:\Users\user\AppData\...\F1j8OOMaAn.exe.log, ASCII 11->39 dropped 61 Writes to foreign memory regions 11->61 63 Allocates memory in foreign processes 11->63 65 Injects a PE file into a foreign processes 11->65 15 F1j8OOMaAn.exe 11->15         started        18 conhost.exe 11->18         started        signatures6 process7 signatures8 67 Multi AV Scanner detection for dropped file 15->67 69 Machine Learning detection for dropped file 15->69 71 Modifies the context of a thread in another process (thread injection) 15->71 73 4 other signatures 15->73 20 explorer.exe 15->20 injected process9 process10 22 msdt.exe 18 20->22         started        file11 31 C:\Users\user\AppData\...\KL3logrv.ini, data 22->31 dropped 33 C:\Users\user\AppData\...\KL3logri.ini, data 22->33 dropped 51 Detected FormBook malware 22->51 53 Tries to steal Mail credentials (via file / registry access) 22->53 55 Tries to harvest and steal browser information (history, passwords, etc) 22->55 57 3 other signatures 22->57 26 cmd.exe 2 22->26         started        signatures12 process13 signatures14 59 Tries to harvest and steal browser information (history, passwords, etc) 26->59 29 conhost.exe 26->29         started        process15
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/10cb1836c9ad0c738ca0c95b748075b4c035f6edd8c07f41735a1ebc9c352eff/
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
Create hunting rule
Status:
Malicious
First seen:
2021-11-15 08:56:02 UTC
AV detection:
21 of 28 (75.00%)
Threat level:
  5/5
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Similar samples:
0789b4aec138cf9c5bc3b01774fc8ed075dadf40c8ecf97058c201c9de22160e
Formbook
67cb5ce28fc7e9a5dae6c7be6da453844762fdea43d985cfc761c1ded66487f0
Formbook
694b9ea09a47c2f24b47c60ddff0a0537828e8ba964c0ad0045b9862bce37d42
Formbook
a2d7a6453efd6b8c31af2e225ae7f93064d44fe328b5bb2e530d820e5e6ca5f8
Formbook
c63cb761da677849b8382eb1d926569f00a04d57f2c789b63e7f2eb2e368a00c
Formbook
daac858e9ca5b0c8044385c2d94cbef17c41b0bd5c569ad7e03f0a51b4caab7a
Formbook
db4d5bd36f923fdd47daf48ace971f47e9764d27a2f88241f09c754c042efc28
Formbook
f136f4f9c59c4ff2582063222c6df106a3d1e3d7d9220ff73e3cb2ec487fe1db
Formbook
fedeb19031bcc0941b0943dd3ed45ee6095b8c489c072c85e513b414abf8acf5
Formbook
+ 9'708 additional samples on MalwareBazaar
Result
Malware family:
formbook
Create hunting rule
Score:
  10/10
Tags:
family:formbook campaign:e6b3 rat spyware stealer trojan
Link:
https://tria.ge/reports/211115-kzgqrsefdr/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Suspicious use of SetThreadContext
Formbook Payload
Formbook
Malware Config
C2 Extraction:
http://www.xn--7tq168cfwa.xn--6qq986b3xl/e6b3/
Unpacked files
SH256 hash:
6891077ecc93aab1d366f1e92b4d0811d22f27f6763755f06b5749b25618db7e
MD5 hash:
225d20c89dd72c188271598aaac819a6
SHA1 hash:
65316b476acd42afafcb83b9b8cca255c4078bb5
Detections:
win_formbook_g0
Create hunting rule
win_formbook_auto
Create hunting rule
Link:
https://www.unpac.me/results/b3a16ac7-cf16-415a-b521-de737c9da795/
Parent samples :
0789b4aec138cf9c5bc3b01774fc8ed075dadf40c8ecf97058c201c9de22160e
10cb1836c9ad0c738ca0c95b748075b4c035f6edd8c07f41735a1ebc9c352eff
4d88b7c45db03545e9efd2f6e07d838849a43594f6a425c05189ca93317a667b
302c46822b5ac032941a5f71818ea42dc414cba27bee30cd589c3427144dcc6c
SH256 hash:
aab9c27dbc2aeec3cd306a0eab73f676a863a3a41da4af09faaca609548edff2
MD5 hash:
cb1af2742420e67832996de038482968
SHA1 hash:
8124bb31d94ba34b18d5c5121121f050e7ac391d
Link:
https://www.unpac.me/results/b3a16ac7-cf16-415a-b521-de737c9da795/
SH256 hash:
10cb1836c9ad0c738ca0c95b748075b4c035f6edd8c07f41735a1ebc9c352eff
MD5 hash:
2137a6b443101101cd8fe7e02551be5a
SHA1 hash:
2d6a265de3b78834af8c11ee4841dd416df6b0f2
Link:
https://www.unpac.me/results/b3a16ac7-cf16-415a-b521-de737c9da795/
Malware family:
FormBook
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/10cb1836c9ad/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.

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:INDICATOR_SUSPICIOUS_Stomped_PECompilation_Timestamp_InTheFuture
Create hunting rule
Author:ditekSHen
Description:Detect executables with stomped PE compilation timestamp that is greater than local current time
Rule name:pe_imphash
Create hunting rule
Rule name:pe_imphash
Create hunting rule
Rule name:Skystars_Malware_Imphash
Create hunting rule
Author:Skystars LightDefender
Description:imphash
Rule name:Typical_Malware_String_Transforms
Create hunting rule
Author:Florian Roth
Description:Detects typical strings in a reversed or otherwise modified form
Reference:Internal Research
Rule name:Typical_Malware_String_Transforms_RID3473
Create hunting rule
Author:Florian Roth
Description:Detects typical strings in a reversed or otherwise modified form
Reference:Internal Research

File information

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

Web download

Formbook

Executable exe 10cb1836c9ad0c738ca0c95b748075b4c035f6edd8c07f41735a1ebc9c352eff

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/1776929/
  
Delivery method
Distributed via web download
Cape
Cape
https://www.capesandbox.com/analysis/205829/

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