MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 ecf35cb255906b46d905041e57f46c21bafb77e4cf7189107bb5977867327a7d. 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 11 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: ecf35cb255906b46d905041e57f46c21bafb77e4cf7189107bb5977867327a7d
SHA3-384 hash: d047a938818baac934a24864932a28202b5d352bed65b97500130d6810722677507a3947127843875bc2860b55c0bdd4
SHA1 hash: 42ab2947b12ed098268bbc56106d60ac8c847653
MD5 hash: a66c46f216994a7cab9c9845c88337ac
humanhash: bluebird-cola-william-kitten
File name:Control Valves.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:375'407 bytes
First seen:2023-11-29 09:08:39 UTC
Last seen:2023-11-29 10:24:19 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash b76363e9cb88bf9390860da8e50999d2 (464 x Formbook, 184 x AgentTesla, 122 x SnakeKeylogger)
ssdeep 6144:6BlL/kpWbOJiiQsb3HbnZns7VEr/CgSCJvMm7Q/f2UHnMBk1i98YjP+pP:A2XJidsb3TZns7OrkCMmEfHMBk1i64+9
TLSH T11E84220AB2EA44D7EC57657242279B78D3B3489E92B1F34B13C96F3512822D3DA5C393
TrID 47.3% (.EXE) Win32 Executable MS Visual C++ (generic) (31206/45/13)
15.9% (.EXE) Win64 Executable (generic) (10523/12/4)
9.9% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
7.6% (.EXE) Win16 NE executable (generic) (5038/12/1)
6.8% (.EXE) Win32 Executable (generic) (4505/5/1)
File icon (PE):PE icon
dhash icon d2e8ecb2b2a2b282 (106 x AgentTesla, 106 x Formbook, 24 x RedLineStealer)
Reporter lowmal3
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
2
# of downloads :
294
Origin country :
DE DE
Vendor Threat Intelligence
Detection:
Formbook
Create hunting rule
Link:
https://www.capesandbox.com/analysis/461149/
Detection(s):
SecuriteInfo.com.FileRepMalware.2670.11232.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Creating a window
Creating a file in the %temp% directory
Creating a process from a recently created file
Сreating synchronization primitives
Launching a process
Unauthorized injection to a recently created process by context flags manipulation
Gathering data
Verdict:
Malicious
Labled as:
Win/malicious_confidence_90%
Link:
https://www.hybrid-analysis.com/sample/ecf35cb255906b46d905041e57f46c21bafb77e4cf7189107bb5977867327a7d
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/ded874ff-dd4d-48ef-a9b2-091ae5283a16
Result
Threat name:
FormBook, NSISDropper
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1349789
Signature
Found evasive API chain (may stop execution after reading information in the PEB, e.g. number of processors)
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
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Queues an APC in another process (thread injection)
Yara detected FormBook
Yara detected NSISDropper
Behaviour
Behavior Graph:
Download SVG
Score:
99%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/ecf35cb255906b46d905041e57f46c21bafb77e4cf7189107bb5977867327a7d
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/ecf35cb255906b46d905041e57f46c21bafb77e4cf7189107bb5977867327a7d/
Threat name:
Win32.Trojan.Strab
Create hunting rule
Status:
Malicious
First seen:
2023-11-28 23:45:27 UTC
File Type:
PE (Exe)
Extracted files:
2
AV detection:
21 of 23 (91.30%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=5tzvzmsvsbvunwifaqpfp5dmeg5pw57ez5yysed3wwlxqzzspj6q._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Result
Malware family:
n/a
Score:
  7/10
Tags:
spyware stealer
Link:
https://tria.ge/reports/231129-k4fz2afc81/
Behaviour
Enumerates system info in registry
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 UnmapMainImage
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Suspicious use of SetThreadContext
Checks computer location settings
Executes dropped EXE
Loads dropped DLL
Reads user/profile data of web browsers
Unpacked files
SH256 hash:
06cf57c6efb811190dc617d16520958ca0baf9a93ce2b42bd5c4f3543d1723e9
MD5 hash:
3e0d825a09dd2a3f4cf8e619d485f234
SHA1 hash:
8767712b5587156bd7f8cdadc6ea5a2c46e8fbd4
Link:
https://www.unpac.me/results/f5bbde3b-0a5a-4063-ba3a-431bbf3b5e12/
SH256 hash:
402f7f082e1e1bb70008c9f0311c7fb190f94f88ee9044afc31691c8759c6cfa
MD5 hash:
aa898b38102c4ca5b7b5417951ae1466
SHA1 hash:
170fe8e36f0502b548465251f8a585b389f09b18
Detections:
win_formbook_w0
Create hunting rule
win_formbook_g0
Create hunting rule
Link:
https://www.unpac.me/results/f5bbde3b-0a5a-4063-ba3a-431bbf3b5e12/
SH256 hash:
cb221c0ba0c581d4eceeccc267e19556ce3f258240a3f0a204a609c712a246d2
MD5 hash:
25cca05d6025ee13f67a9915ccc8ac97
SHA1 hash:
3d3f3b3e05bb2b7fd029f9a2a1214bb224cca31f
Link:
https://www.unpac.me/results/f5bbde3b-0a5a-4063-ba3a-431bbf3b5e12/
SH256 hash:
ecf35cb255906b46d905041e57f46c21bafb77e4cf7189107bb5977867327a7d
MD5 hash:
a66c46f216994a7cab9c9845c88337ac
SHA1 hash:
42ab2947b12ed098268bbc56106d60ac8c847653
Link:
https://www.unpac.me/results/f5bbde3b-0a5a-4063-ba3a-431bbf3b5e12/
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/ecf35cb25590/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/ecf35cb255906b46d905041e57f46c21bafb77e4cf7189107bb5977867327a7d

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:Formbook
Create hunting rule
Author:kevoreilly
Description:Formbook Payload
Rule name:maldoc_getEIP_method_1
Create hunting rule
Author:Didier Stevens (https://DidierStevens.com)
Rule name:meth_get_eip
Create hunting rule
Author:Willi Ballenthin
Rule name:meth_stackstrings
Create hunting rule
Author:Willi Ballenthin
Rule name:pe_no_import_table
Create hunting rule
Description:Detect pe file that no import table
Rule name:RIPEMD160_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for RIPEMD-160 constants
Rule name:SHA1_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for SHA1 constants
Rule name:shellcode
Create hunting rule
Author:nex
Description:Matched shellcode byte patterns
Rule name:Windows_Trojan_Formbook
Create hunting rule
Author:@malgamy12
Rule name:Windows_Trojan_Formbook_1112e116
Create hunting rule
Author:Elastic Security
Rule name:win_formbook_w0
Create hunting rule
Author:@malgamy12

File information

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

Malspam

Formbook

Executable exe ecf35cb255906b46d905041e57f46c21bafb77e4cf7189107bb5977867327a7d

(this sample)

  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/461149/

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