MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 b7def3af905789a4ecedcc226d91592d8bc758ce8c5458d62ef435707de8670f. 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: 17


Intelligence 17 IOCs YARA 28 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: b7def3af905789a4ecedcc226d91592d8bc758ce8c5458d62ef435707de8670f
SHA3-384 hash: 2562cf3ad77b07ad95a39cfecf6e76c57f2ab96f488b113efaf5485c8f65fc6df3c63d5ddc6f396f0f570515fa55dd57
SHA1 hash: 7456cf2540dce6403407b532c502ce5abb07e9ec
MD5 hash: da68e8ff4e0c0d00c613fa9301cf4a37
humanhash: three-island-mirror-illinois
File name:Statement Of Account.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:791'040 bytes
First seen:2024-04-23 16:41:59 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'737 x AgentTesla, 19'596 x Formbook, 12'241 x SnakeKeylogger)
ssdeep 12288:xSNhWU2EOum32U5Gt68PG+SAJYyEQzHmt5xCohEotOJ6E+L+BtN:xSLrvUGt07MY9xCohEl8LaN
Threatray 571 similar samples on MalwareBazaar
TLSH T1D4F49E3D18BE22BB81B9C6A9CFD5882BF540E46B7051AD7498D747A55343E4B38C323E
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)
Reporter lowmal3
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
1
# of downloads :
334
Origin country :
DE DE
Vendor Threat Intelligence
Malware family:
formbook
Create hunting rule
ID:
1
File name:
b7def3af905789a4ecedcc226d91592d8bc758ce8c5458d62ef435707de8670f.exe
Verdict:
Malicious activity
Analysis date:
2024-04-24 05:34:10 UTC
Tags:
formbook xloader stealer spyware
Link:
https://app.any.run/tasks/b7786a2d-fc99-43af-a5e5-8a7e8b314998

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Сreating synchronization primitives
Creating a process with a hidden window
Creating a file in the %AppData% directory
Enabling the 'hidden' option for recently created files
Adding an access-denied ACE
Creating a file in the %temp% directory
Launching a process
Creating a file
Launching cmd.exe command interpreter
Setting browser functions hooks
Forced shutdown of a system process
Adding an exclusion to Microsoft Defender
Enabling autorun by creating a file
Unauthorized injection to a system process
Verdict:
Likely Malicious
Threat level:
  7.5/10
Confidence:
100%
Tags:
masquerade packed
Link:
https://www.filescan.io/uploads/6627e4df54bafb7d21da5dc8/reports/57e3ece7-546d-42a6-be27-3fa37b501d99/overview
Verdict:
Malicious
Labled as:
Win/malicious_confidence_100%
Link:
https://www.hybrid-analysis.com/sample/b7def3af905789a4ecedcc226d91592d8bc758ce8c5458d62ef435707de8670f
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/a33f37f2-4760-4ae2-a633-01892d13838b
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1430501
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
Allocates memory in foreign processes
C2 URLs / IPs found in malware configuration
Found malware configuration
Injects a PE file into a foreign processes
Loading BitLocker PowerShell Module
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
Sigma detected: CMSTP Execution Process Creation
Sigma detected: Powershell Base64 Encoded MpPreference Cmdlet
Sigma detected: Scheduled temp file as task from temp location
Snort IDS alert for network traffic
System process connects to network (likely due to code injection or exploit)
Tries to detect virtualization through RDTSC time measurements
Uses schtasks.exe or at.exe to add and modify task schedules
Writes to foreign memory regions
Yara detected AntiVM3
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1430501 Sample: Statement Of Account.exe Startdate: 23/04/2024 Architecture: WINDOWS Score: 100 57 www.zdryueva.com 2->57 59 www.bodution.website 2->59 61 4 other IPs or domains 2->61 79 Snort IDS alert for network traffic 2->79 81 Found malware configuration 2->81 83 Malicious sample detected (through community Yara rule) 2->83 85 14 other signatures 2->85 11 Statement Of Account.exe 7 2->11         started        15 SdYCcXyq.exe 5 2->15         started        signatures3 process4 file5 53 C:\Users\user\AppData\Roaming\SdYCcXyq.exe, PE32 11->53 dropped 55 C:\Users\user\AppData\Local\...\tmp9A8F.tmp, XML 11->55 dropped 87 Writes to foreign memory regions 11->87 89 Allocates memory in foreign processes 11->89 91 Adds a directory exclusion to Windows Defender 11->91 17 RegSvcs.exe 11->17         started        20 powershell.exe 23 11->20         started        22 powershell.exe 23 11->22         started        24 schtasks.exe 1 11->24         started        93 Multi AV Scanner detection for dropped file 15->93 95 Machine Learning detection for dropped file 15->95 97 Injects a PE file into a foreign processes 15->97 26 RegSvcs.exe 15->26         started        28 schtasks.exe 15->28         started        signatures6 process7 signatures8 69 Modifies the context of a thread in another process (thread injection) 17->69 71 Maps a DLL or memory area into another process 17->71 73 Sample uses process hollowing technique 17->73 77 2 other signatures 17->77 30 explorer.exe 32 1 17->30 injected 75 Loading BitLocker PowerShell Module 20->75 34 WmiPrvSE.exe 20->34         started        36 conhost.exe 20->36         started        38 conhost.exe 22->38         started        40 conhost.exe 24->40         started        42 conhost.exe 28->42         started        process9 dnsIp10 63 www.airzf.com 154.12.38.29, 49748, 80 UNMETEREDCA United States 30->63 65 www.b-a-s-e.net 91.195.240.94, 49750, 80 SEDO-ASDE Germany 30->65 67 td-ccm-neg-87-45.wixdns.net 34.149.87.45, 49751, 80 ATGS-MMD-ASUS United States 30->67 105 System process connects to network (likely due to code injection or exploit) 30->105 44 cmstp.exe 30->44         started        47 colorcpl.exe 30->47         started        signatures11 process12 signatures13 99 Modifies the context of a thread in another process (thread injection) 44->99 101 Maps a DLL or memory area into another process 44->101 103 Tries to detect virtualization through RDTSC time measurements 44->103 49 cmd.exe 44->49         started        process14 process15 51 conhost.exe 49->51         started       
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/b7def3af905789a4ecedcc226d91592d8bc758ce8c5458d62ef435707de8670f
Detection:
formbook
Create hunting rule
Link:
https://mwdb.cert.pl/sample/b7def3af905789a4ecedcc226d91592d8bc758ce8c5458d62ef435707de8670f/
Threat name:
ByteCode-MSIL.Trojan.Spynoon
Create hunting rule
Status:
Malicious
First seen:
2024-04-23 14:58:46 UTC
File Type:
PE (.Net Exe)
Extracted files:
9
AV detection:
15 of 24 (62.50%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=w7pphl4qk6e2j3hnzqrg3ekzfwf4owgorrkfrvro6q2xa7pim4hq._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Similar samples:
12fb27d7a59c168a82317baa0b127b8a826cc98dd108fc37fd022d8a842b06bc
Formbook
331ca91b3a643aab796547bdd69ecd624ab13ac224ea80f88ca4a8987c0625e3
Formbook
37fd7b8035bd49b8dfad405a793428dda8cbf623de0133818756d05a1191d8b7
Formbook
7b692628c5a43cef1780ecd6223c6fa9e40a1e45932db8456738ecd61700544d
Formbook
81f6e3ff9cc821300e30acd628d0579793806ebfb89941d04f9bc33998f9a851
Formbook
ae300b28b2240d11d01e9066a26a88349258d4016c41460604c9ff5bb64c9b6d
Formbook
d56e9061e7f6df6e094d1582d817c381f8ce9ac6c3925cba5da96464487a18b7
Formbook
e1fd783c3c5c3a686b2ae04b64ecce2b3c5e00d2bed04cdbf8f420a57d82208e
Formbook
+ 561 additional samples on MalwareBazaar
Result
Malware family:
formbook
Create hunting rule
Score:
  10/10
Tags:
family:formbook campaign:gs12 rat spyware stealer trojan
Link:
https://tria.ge/reports/240423-t7ncyshh7w/
Behaviour
Creates scheduled task(s)
Modifies registry class
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of FindShellTrayWindow
Suspicious use of UnmapMainImage
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Program crash
Suspicious use of SetThreadContext
Checks computer location settings
Formbook payload
Formbook
Unpacked files
SH256 hash:
a2ba42ed48ec131b0b401c30a65855fb6e9cf95f8d95cec11b9c4a9b4d2eb32e
MD5 hash:
d37feecac71348dce1ea1abf653c2a5f
SHA1 hash:
296bbb93b782a4794f0a833f05c0fc5f8a21b3d3
Detections:
FormBook
Create hunting rule
win_formbook_w0
Create hunting rule
win_formbook_auto
Create hunting rule
win_formbook_g0
Create hunting rule
Formbook
Create hunting rule
Link:
https://www.unpac.me/results/c44d0c3c-975d-438a-99ca-69a80ebb9d8a/
Parent samples :
7b692628c5a43cef1780ecd6223c6fa9e40a1e45932db8456738ecd61700544d
81f6e3ff9cc821300e30acd628d0579793806ebfb89941d04f9bc33998f9a851
ae300b28b2240d11d01e9066a26a88349258d4016c41460604c9ff5bb64c9b6d
b7def3af905789a4ecedcc226d91592d8bc758ce8c5458d62ef435707de8670f
SH256 hash:
1cf7b0a6e43a4623aeb9cbfa2de4eec6e964712621416f6f48ffe88a6cc885bb
MD5 hash:
03d34cbff9034468b35b1bb7551c67eb
SHA1 hash:
e3821d953e2cec13772febba37d27782ff10919d
Link:
https://www.unpac.me/results/c44d0c3c-975d-438a-99ca-69a80ebb9d8a/
SH256 hash:
1c633f39a192f108f755e0bcf412e8489ad80781f3b7807c80892deb2526ff0d
MD5 hash:
e4b5d57e9e46a4e76075b5b92f71577f
SHA1 hash:
d76dc165724148193c6911cc75fc62c198737d3a
Link:
https://www.unpac.me/results/c44d0c3c-975d-438a-99ca-69a80ebb9d8a/
Parent samples :
d89ea6a01347b82f963ed7960583e5d76c6a07e91852fae83bc290e0f64a06b2
3f700fd41c6cca501d50cc2f62afd8e0d951efc1a918aa65ab3e84ee563ff1d6
26a36920e7a463398a4251828ec02fd965ad1d782f819b0c04904706efb083be
SH256 hash:
3fe1ccb8e4474a3da0458a61b641653360268f114b0ef446568af55eb66ef512
MD5 hash:
8da7eb6417b8cc0eb11580634eeb18db
SHA1 hash:
81da4003994bfc36fc824f943e562c90faf1e6e4
Link:
https://www.unpac.me/results/c44d0c3c-975d-438a-99ca-69a80ebb9d8a/
SH256 hash:
b7def3af905789a4ecedcc226d91592d8bc758ce8c5458d62ef435707de8670f
MD5 hash:
da68e8ff4e0c0d00c613fa9301cf4a37
SHA1 hash:
7456cf2540dce6403407b532c502ce5abb07e9ec
Link:
https://www.unpac.me/results/c44d0c3c-975d-438a-99ca-69a80ebb9d8a/
Malware family:
FormBook
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/b7def3af9057/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: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: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_auto
Create hunting rule
Author:Felix Bilstein - yara-signator at cocacoding dot com
Description:Detects win.formbook.
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 b7def3af905789a4ecedcc226d91592d8bc758ce8c5458d62ef435707de8670f

(this sample)

  
Delivery method
Distributed via e-mail attachment

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