MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 dfa384f6136c43639f6c66766ca81c245e65a70fcf92015656b1cd7a579a3647. 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: 14


Intelligence 14 IOCs YARA 22 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: dfa384f6136c43639f6c66766ca81c245e65a70fcf92015656b1cd7a579a3647
SHA3-384 hash: 894380c2429734cef2f2fca2783f99de634a7c337061b85d668f887a504fcd0b7f5b22008abebef46613d42ffbf07b59
SHA1 hash: a9fd3740dfa56993bd035f364ee1a3fa8c6e4d98
MD5 hash: 1eae796974a2c3859ecf07473a2c6107
humanhash: fruit-carbon-network-vermont
File name:SecuriteInfo.com.Win32.RATX-gen.13638.31429
Download: download sample
Signature Formbook
Create hunting rule
File size:1'202'176 bytes
First seen:2024-03-15 14:29:22 UTC
Last seen:2024-03-18 14:06:19 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'661 x AgentTesla, 19'474 x Formbook, 12'208 x SnakeKeylogger)
ssdeep 24576:qqMX7jblQk9/iBBSvePyMNi5s+YkCfeMwmSmG2QMV:qqS7jblQk9/iBBSveaMNiZofZtPGV
TLSH T1E745293C59FC1227D1B5D2A1DBD48023F764A4AB3025EE6989C203D5476FB426E87E2F
TrID 71.1% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
10.2% (.EXE) Win64 Executable (generic) (10523/12/4)
6.3% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
4.3% (.EXE) Win32 Executable (generic) (4504/4/1)
2.0% (.ICL) Windows Icons Library (generic) (2059/9)
File icon (PE):PE icon
dhash icon 00ccb296cce89200 (1 x Formbook)
Reporter SecuriteInfoCom
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
131
# of downloads :
359
Origin country :
FR FR
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
dfa384f6136c43639f6c66766ca81c245e65a70fcf92015656b1cd7a579a3647.exe
Verdict:
Malicious activity
Analysis date:
2024-03-15 14:33:19 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/f010b24e-bb77-4afa-a70c-fe145fb283fb

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/479146/
Detection(s):
Porcupine.Malware.58887.UNOFFICIAL
Create hunting rule

SecuriteInfo.com.Win32.RATX-gen.13638.31429.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Сreating synchronization primitives
Creating a process with a hidden window
Unauthorized injection to a recently created process
Restart of the analyzed sample
Creating a file
Searching for synchronization primitives
Launching the default Windows debugger (dwwin.exe)
Searching for the window
Launching a process
Moving a file to the Program Files subdirectory
Replacing files
Adding an exclusion to Microsoft Defender
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
packed
Link:
https://www.filescan.io/uploads/65f45b70f074ad892e54751d/reports/251a0df9-c50f-44fc-9df9-9c0f3530f288/overview
Verdict:
Malicious
Labled as:
Win/malicious_confidence_100%
Link:
https://www.hybrid-analysis.com/sample/dfa384f6136c43639f6c66766ca81c245e65a70fcf92015656b1cd7a579a3647
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:
MSIL Injector
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/39cfc91c-ad3e-4d38-8d56-0af82113e9bb
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
96 / 100
Link:
https://www.joesandbox.com/analysis/1409679
Signature
.NET source code contains potential unpacker
.NET source code contains very large array initializations
.NET source code contains very large strings
Adds a directory exclusion to Windows Defender
Injects a PE file into a foreign processes
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for submitted file
Sigma detected: Powershell Base64 Encoded MpPreference Cmdlet
Yara detected AntiVM3
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 1409679 Sample: SecuriteInfo.com.Win32.RATX... Startdate: 15/03/2024 Architecture: WINDOWS Score: 96 22 Malicious sample detected (through community Yara rule) 2->22 24 Multi AV Scanner detection for submitted file 2->24 26 Yara detected FormBook 2->26 28 5 other signatures 2->28 7 SecuriteInfo.com.Win32.RATX-gen.13638.31429.exe 4 2->7         started        process3 signatures4 30 Adds a directory exclusion to Windows Defender 7->30 32 Injects a PE file into a foreign processes 7->32 10 powershell.exe 23 7->10         started        12 SecuriteInfo.com.Win32.RATX-gen.13638.31429.exe 7->12         started        14 SecuriteInfo.com.Win32.RATX-gen.13638.31429.exe 7->14         started        process5 process6 16 WmiPrvSE.exe 10->16         started        18 conhost.exe 10->18         started        20 WerFault.exe 21 16 12->20         started       
Score:
99%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/dfa384f6136c43639f6c66766ca81c245e65a70fcf92015656b1cd7a579a3647
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/dfa384f6136c43639f6c66766ca81c245e65a70fcf92015656b1cd7a579a3647/
Threat name:
Win32.Trojan.Znyonm
Create hunting rule
Status:
Malicious
First seen:
2024-03-15 13:11:00 UTC
File Type:
PE (.Net Exe)
Extracted files:
13
AV detection:
21 of 24 (87.50%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=36ryj5qtnrbwhh3mmz3gzka4erpgljypz6jacvswwhgxuv42gzdq._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Result
Malware family:
n/a
Score:
  7/10
Tags:
n/a
Link:
https://tria.ge/reports/240315-rt6ahach74/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Program crash
Suspicious use of SetThreadContext
Checks computer location settings
Unpacked files
SH256 hash:
d98d93710c75552ce9d5bff0ae6ab1c1f95502324310cfd0318be6efd83a4896
MD5 hash:
bb37255de5f854b794c222c69e0a029c
SHA1 hash:
a97b28fe9bdb3c9242222dfe27ce416d2f2632ef
Link:
https://www.unpac.me/results/d1dee4c7-b49b-4db2-9e58-b6773afb2671/
SH256 hash:
dddf23c8e78b081c5f1cb7cbe18b7466f91abcb7f4a0e5f6ba91b285d9346791
MD5 hash:
42395301981d9ed7a9d094ee83c78b70
SHA1 hash:
6c68437332c59fdc3a45df351cb6aa07d709ab47
Link:
https://www.unpac.me/results/d1dee4c7-b49b-4db2-9e58-b6773afb2671/
SH256 hash:
b18c02279b5016ab433cb11fc68212055966fbe81bb7d7f10d526fb2b61d6454
MD5 hash:
149f6e1717a06c65c1f12b5b06940fa3
SHA1 hash:
d725ed17da37f999989da683ac1f53d50bb217d5
Link:
https://www.unpac.me/results/d1dee4c7-b49b-4db2-9e58-b6773afb2671/
SH256 hash:
c10c9b0882bac6f788f48b4dabe3291b14e639e650f2b9fcb0bc174ac92ae02b
MD5 hash:
7c7fb6daa78beb69128991ff893143ed
SHA1 hash:
c01bb99984b12b84129db80eae1d5d8341a358e2
Link:
https://www.unpac.me/results/d1dee4c7-b49b-4db2-9e58-b6773afb2671/
SH256 hash:
529826ba31b15ff67e8ad2782a98dc9037a2a6411114c147389f8a3aba9a6016
MD5 hash:
4b80b00d264c884e72e34274430d41b8
SHA1 hash:
3dc3580c12c0179a837b5cfa8bc3c7c1979a6a1c
Link:
https://www.unpac.me/results/d1dee4c7-b49b-4db2-9e58-b6773afb2671/
SH256 hash:
c7b65c024c00424121be603e04c3032bfb1415c2bb12dadcf03c34ee72321c58
MD5 hash:
1c54147f268ac0afa3a41e7c89a79162
SHA1 hash:
221ff832887f8be905fd555f973422b587bacefb
Link:
https://www.unpac.me/results/d1dee4c7-b49b-4db2-9e58-b6773afb2671/
SH256 hash:
dfa384f6136c43639f6c66766ca81c245e65a70fcf92015656b1cd7a579a3647
MD5 hash:
1eae796974a2c3859ecf07473a2c6107
SHA1 hash:
a9fd3740dfa56993bd035f364ee1a3fa8c6e4d98
Link:
https://www.unpac.me/results/d1dee4c7-b49b-4db2-9e58-b6773afb2671/
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/dfa384f6136c/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/dfa384f6136c43639f6c66766ca81c245e65a70fcf92015656b1cd7a579a3647

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:AgentTesla_DIFF_Common_Strings_01
Create hunting rule
Author:schmidtsz
Description:Identify partial Agent Tesla strings
Rule name:DebuggerCheck__GlobalFlags
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:DebuggerCheck__QueryInfo
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:DebuggerHiding__Active
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:DebuggerHiding__Thread
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:Formbook
Create hunting rule
Author:kevoreilly
Description:Formbook Payload
Rule name:maldoc_find_kernel32_base_method_1
Create hunting rule
Author:Didier Stevens (https://DidierStevens.com)
Rule name:maldoc_getEIP_method_1
Create hunting rule
Author:Didier Stevens (https://DidierStevens.com)
Rule name:MD5_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for MD5 constants
Rule name:meth_get_eip
Create hunting rule
Author:Willi Ballenthin
Rule name:meth_stackstrings
Create hunting rule
Author:Willi Ballenthin
Rule name:NET
Create hunting rule
Author:malware-lu
Rule name:pe_imphash
Create hunting rule
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:SEH__vectored
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
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:Skystars_Malware_Imphash
Create hunting rule
Author:Skystars LightDefender
Description:imphash
Rule name:Windows_Trojan_Formbook
Create hunting rule
Author:@malgamy12
Rule name:Windows_Trojan_Formbook_1112e116
Create hunting rule
Author:Elastic Security
Reference:https://www.elastic.co/security-labs/formbook-adopts-cab-less-approach
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

7z 59070005d24a756467114c300abe2ef425f552c2bba36253d66ab79bf86a7b0b

Formbook

Executable exe dfa384f6136c43639f6c66766ca81c245e65a70fcf92015656b1cd7a579a3647

(this sample)

Cape
Cape
https://www.capesandbox.com/analysis/479146/
  
Dropped by
SHA256 59070005d24a756467114c300abe2ef425f552c2bba36253d66ab79bf86a7b0b
  
Dropped by
MD5 7d3a8168361119a2d8d0287a7324881a
  
Dropped by
SHA256 a639780a2b1cafb3c0bb210fc2066a51373e7b5963c1dc8b432a8ad6e0793cc7
  
Dropped by
MD5 f684e3565aabe07ae9c8bb837de97e15

BLint

The following table provides more information about this file using BLint. BLint is a Binary Linter to check the security properties, and capabilities in executables.

Findings
IDTitleSeverity
CHECK_AUTHENTICODEMissing Authenticodehigh
CHECK_DLL_CHARACTERISTICSMissing dll Security Characteristics (HIGH_ENTROPY_VA)high

Comments