MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 cd00f31be2b7bb08d5e499cbe39d3ab9d5aac66ba0a5e5ffc3e97bd9cc598fc1. 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 9 File information Comments
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SHA256 hash: cd00f31be2b7bb08d5e499cbe39d3ab9d5aac66ba0a5e5ffc3e97bd9cc598fc1
SHA3-384 hash: 7b78bf58d9bee85605e72169b27d196e1b0018535baa97c8ac043a54c2645e46a98804185ed85cfb273843bdbe00cfc8
SHA1 hash: 57793130a620590d01138c50dbaecf5ada3806d1
MD5 hash: 8665c8785dad3abba62da60658d1f4d1
humanhash: seventeen-north-sodium-georgia
File name:BL4567GH67_xls.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:774'144 bytes
First seen:2024-04-10 08:16:57 UTC
Last seen:2024-04-10 09:28:49 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'652 x AgentTesla, 19'463 x Formbook, 12'204 x SnakeKeylogger)
ssdeep 12288:RvNR4EoOBKMNHlgCZP0MC3VMUoST0uG04tGs8JvRoIii3QlfoCEMCsOhHogfln:1oOBrBlr0xFMUJCas8JSIiuyfoC7YP
TLSH T118F423F03B698997C76B97FB4931058103F0A819B531EAC8CCC25A6E5E7EB0D06857E7
TrID 69.7% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
10.0% (.EXE) Win64 Executable (generic) (10523/12/4)
6.2% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
4.2% (.EXE) Win32 Executable (generic) (4504/4/1)
1.9% (.EXE) Win16/32 Executable Delphi generic (2072/23)
File icon (PE):PE icon
dhash icon 185210d0d01430b2 (4 x AgentTesla, 3 x Formbook, 1 x RemcosRAT)
Reporter threatcat_ch
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
2
# of downloads :
342
Origin country :
CH CH
Vendor Threat Intelligence
Malware family:
formbook
Create hunting rule
ID:
1
File name:
cd00f31be2b7bb08d5e499cbe39d3ab9d5aac66ba0a5e5ffc3e97bd9cc598fc1.exe
Verdict:
Malicious activity
Analysis date:
2024-04-10 08:18:12 UTC
Tags:
formbook xloader
Link:
https://app.any.run/tasks/d0092af1-9965-473c-a3b0-c34a975fafe6

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Verdict:
Likely Malicious
Threat level:
  7.5/10
Confidence:
100%
Tags:
masquerade packed
Link:
https://www.filescan.io/uploads/66164afe35699b4745c46075/reports/fca1fbed-6a0e-42ca-85e5-3bde299c70e0/overview
Verdict:
Unknown
Link:
https://www.hybrid-analysis.com/sample/cd00f31be2b7bb08d5e499cbe39d3ab9d5aac66ba0a5e5ffc3e97bd9cc598fc1
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/4c09191d-9f29-4404-94bc-1a84294b5d05
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1423729
Signature
.NET source code contains potential unpacker
.NET source code contains very large array initializations
Adds a directory exclusion to Windows Defender
Antivirus / Scanner detection for submitted sample
Antivirus detection for URL or domain
Found direct / indirect Syscall (likely to bypass EDR)
Injects a PE file into a foreign processes
Loading BitLocker PowerShell Module
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)
Sigma detected: Powershell Base64 Encoded MpPreference Cmdlet
Snort IDS alert for network traffic
Tries to harvest and steal browser information (history, passwords, etc)
Tries to steal Mail credentials (via file / registry access)
Yara detected AntiVM3
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1423729 Sample: BL4567GH67_xls.exe Startdate: 10/04/2024 Architecture: WINDOWS Score: 100 34 www.vivelenoire.co.uk 2->34 36 www.thegoldengirlsshop.com 2->36 38 18 other IPs or domains 2->38 48 Snort IDS alert for network traffic 2->48 50 Malicious sample detected (through community Yara rule) 2->50 52 Antivirus detection for URL or domain 2->52 54 8 other signatures 2->54 10 BL4567GH67_xls.exe 4 2->10         started        signatures3 process4 signatures5 64 Adds a directory exclusion to Windows Defender 10->64 66 Injects a PE file into a foreign processes 10->66 13 BL4567GH67_xls.exe 10->13         started        16 powershell.exe 23 10->16         started        process6 signatures7 68 Maps a DLL or memory area into another process 13->68 18 WYIRDwhJcqHygaJHcWrFSw.exe 13->18 injected 70 Loading BitLocker PowerShell Module 16->70 21 WmiPrvSE.exe 16->21         started        23 conhost.exe 16->23         started        process8 signatures9 46 Found direct / indirect Syscall (likely to bypass EDR) 18->46 25 SecEdit.exe 13 18->25         started        process10 signatures11 56 Tries to steal Mail credentials (via file / registry access) 25->56 58 Tries to harvest and steal browser information (history, passwords, etc) 25->58 60 Modifies the context of a thread in another process (thread injection) 25->60 62 2 other signatures 25->62 28 WYIRDwhJcqHygaJHcWrFSw.exe 25->28 injected 32 firefox.exe 25->32         started        process12 dnsIp13 40 www.momentumholdings.top 203.161.50.128, 49740, 49741, 49742 VNPT-AS-VNVNPTCorpVN Malaysia 28->40 42 www.drjoserizal.com 15.197.130.221, 49732, 49733, 49734 TANDEMUS United States 28->42 44 12 other IPs or domains 28->44 72 Found direct / indirect Syscall (likely to bypass EDR) 28->72 signatures14
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/cd00f31be2b7bb08d5e499cbe39d3ab9d5aac66ba0a5e5ffc3e97bd9cc598fc1
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/cd00f31be2b7bb08d5e499cbe39d3ab9d5aac66ba0a5e5ffc3e97bd9cc598fc1/
Threat name:
ByteCode-MSIL.Trojan.NanoBot
Create hunting rule
Status:
Malicious
First seen:
2024-04-10 07:51:03 UTC
File Type:
PE (.Net Exe)
Extracted files:
13
AV detection:
18 of 24 (75.00%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=zuapgg7cw65qrvpethf6hhj2xhk2vrtlucs6l76d5f55ttczr7aq._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/240410-j6pjhscd7w/
Behaviour
Modifies Internet Explorer settings
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Suspicious use of SetThreadContext
Checks computer location settings
Unpacked files
SH256 hash:
20203c8dd8eeb2852f71b564391efbe3838a859e2f9e7926b5324e6bfc5217bc
MD5 hash:
ea42aeb2f2164a79c4005b33c209048d
SHA1 hash:
1fc071bd5b11832b1c72ccec3dde733b40127ee4
Link:
https://www.unpac.me/results/617086b8-d566-409f-a954-81ddebd293b3/
SH256 hash:
5536a12dfbd2d3a158c7be6fdec8b510b281a4a34f896b356d1f4a7e41dd87ce
MD5 hash:
9de907a8c7112dbdf6172e6bbf663eb3
SHA1 hash:
d3f802adde7b08d9a5cd37e8a188a77fc41b73a0
Link:
https://www.unpac.me/results/617086b8-d566-409f-a954-81ddebd293b3/
SH256 hash:
bc39c3ba2ef220300f37e0ccffd84e387eaa28c831859c3588cdfdeec243b0c5
MD5 hash:
e4c53cafec45a303e00d4d7702b02822
SHA1 hash:
bf21964cd02330655a1eb04fb83ece35899977bf
Detections:
INDICATOR_EXE_Packed_SmartAssembly
Create hunting rule
Link:
https://www.unpac.me/results/617086b8-d566-409f-a954-81ddebd293b3/
Parent samples :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 hash:
9fc604aa0b60fd4d49e7a61917fe44cc42efeca35b92a51b2cd366aed9f84787
MD5 hash:
98788138bb42e5b9ff0c8b93ba1d010f
SHA1 hash:
8e26627c327b1b3c11c138be183896bda0bed6b8
Link:
https://www.unpac.me/results/617086b8-d566-409f-a954-81ddebd293b3/
SH256 hash:
9ab47fbda035c91bb267f39a7861a542d9079243c4853ef60fa622f40069a5e4
MD5 hash:
d99a6c12be38ccdd3ad549334563b46c
SHA1 hash:
0313807dcad283ed0df9a02ed9fb471001bdd940
Link:
https://www.unpac.me/results/617086b8-d566-409f-a954-81ddebd293b3/
SH256 hash:
cd00f31be2b7bb08d5e499cbe39d3ab9d5aac66ba0a5e5ffc3e97bd9cc598fc1
MD5 hash:
8665c8785dad3abba62da60658d1f4d1
SHA1 hash:
57793130a620590d01138c50dbaecf5ada3806d1
Link:
https://www.unpac.me/results/617086b8-d566-409f-a954-81ddebd293b3/
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/cd00f31be2b7/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/cd00f31be2b7bb08d5e499cbe39d3ab9d5aac66ba0a5e5ffc3e97bd9cc598fc1

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: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:NET
Create hunting rule
Author:malware-lu
Rule name:NETexecutableMicrosoft
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:shellcode
Create hunting rule
Author:nex
Description:Matched shellcode byte patterns
Rule name:Skystars_Malware_Imphash
Create hunting rule
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 cd00f31be2b7bb08d5e499cbe39d3ab9d5aac66ba0a5e5ffc3e97bd9cc598fc1

(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 (GUARD_CF)high

Comments