MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 4ad59341983721e993d8e08ed447a71481b01e0b6afa50251ae312cee4b17805. 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 10 File information Comments
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SHA256 hash: 4ad59341983721e993d8e08ed447a71481b01e0b6afa50251ae312cee4b17805
SHA3-384 hash: 27c5fa57104a64c88d3ef369254a37ab42047e17b24682779b44f0927b748d13c474b1330a3349992156ab676cdd20e5
SHA1 hash: fb9e5df43c3bcf763238a37158ac5afd69322605
MD5 hash: 08e23ac40b1f3db7f20c5e7b619b99ac
humanhash: colorado-angel-september-august
File name:PDA Appointment-0000092-PDF.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:865'288 bytes
First seen:2025-01-28 05:27:53 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'753 x AgentTesla, 19'658 x Formbook, 12'249 x SnakeKeylogger)
ssdeep 24576:ztLZzMrBOBpvqqLKePbr842jkwgrryBF5:vznpvLTnd/e
Threatray 48 similar samples on MalwareBazaar
TLSH T15E05E0D13F36B319DEA96935C159EDB992A12A7870047AF76ADC375732CC212AE0CF04
TrID 71.1% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
10.2% (.EXE) Win64 Executable (generic) (10522/11/4)
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)
Magika pebin
File icon (PE):PE icon
dhash icon 66e69a98a2cada92 (5 x Formbook, 3 x SnakeKeylogger, 2 x MassLogger)
Reporter threatcat_ch
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
1
# of downloads :
508
Origin country :
CH CH
Vendor Threat Intelligence
Detection(s):
SecuriteInfo.com.Win32.PWSX-gen.7356.20258.UNOFFICIAL
Create hunting rule

Gathering data
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
Adding an exclusion to Microsoft Defender
Enabling autorun by creating a file
Unauthorized injection to a system process
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
obfuscated packed packed packer_detected
Link:
https://www.filescan.io/uploads/67986ae32a1b30f5047aac10/reports/95cabc51-7ebc-4e60-8c6e-629b82ba13b9/overview
Verdict:
Malicious
Labled as:
Win/malicious_confidence_100%
Link:
https://www.hybrid-analysis.com/sample/4ad59341983721e993d8e08ed447a71481b01e0b6afa50251ae312cee4b17805
Result
Verdict:
SUSPICIOUS
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/7e72e2c6-1dec-461c-9aa7-f460efe0400b
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1600985
Signature
.NET source code contains potential unpacker
Adds a directory exclusion to Windows Defender
Antivirus / Scanner detection for submitted sample
Antivirus detection for dropped file
Antivirus detection for URL or domain
Found direct / indirect Syscall (likely to bypass EDR)
Joe Sandbox ML detected suspicious sample
Loading BitLocker PowerShell Module
Machine Learning detection for dropped file
Machine Learning detection for sample
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 dropped file
Multi AV Scanner detection for submitted file
Queues an APC in another process (thread injection)
Sigma detected: Powershell Base64 Encoded MpPreference Cmdlet
Sigma detected: Scheduled temp file as task from temp location
Suricata IDS alerts for network traffic
Switches to a custom stack to bypass stack traces
Tries to harvest and steal browser information (history, passwords, etc)
Tries to steal Mail credentials (via file / registry access)
Uses schtasks.exe or at.exe to add and modify task schedules
Yara detected AntiVM3
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1600985 Sample: PDA Appointment-0000092-PDF.exe Startdate: 28/01/2025 Architecture: WINDOWS Score: 100 61 www.visionaryb.site 2->61 63 www.odvfr.info 2->63 65 16 other IPs or domains 2->65 79 Suricata IDS alerts for network traffic 2->79 81 Antivirus detection for URL or domain 2->81 83 Antivirus / Scanner detection for submitted sample 2->83 85 10 other signatures 2->85 10 PDA Appointment-0000092-PDF.exe 7 2->10         started        14 dLDwLRp.exe 5 2->14         started        signatures3 process4 file5 53 C:\Users\user\AppData\Roaming\dLDwLRp.exe, PE32 10->53 dropped 55 C:\Users\user\...\dLDwLRp.exe:Zone.Identifier, ASCII 10->55 dropped 57 C:\Users\user\AppData\Local\...\tmpC7C9.tmp, XML 10->57 dropped 59 C:\...\PDA Appointment-0000092-PDF.exe.log, ASCII 10->59 dropped 87 Adds a directory exclusion to Windows Defender 10->87 16 RegSvcs.exe 10->16         started        19 powershell.exe 23 10->19         started        21 powershell.exe 23 10->21         started        23 schtasks.exe 1 10->23         started        89 Antivirus detection for dropped file 14->89 91 Multi AV Scanner detection for dropped file 14->91 93 Machine Learning detection for dropped file 14->93 25 schtasks.exe 1 14->25         started        27 RegSvcs.exe 14->27         started        29 RegSvcs.exe 14->29         started        signatures6 process7 signatures8 73 Maps a DLL or memory area into another process 16->73 31 IF13pUhpNjQ.exe 16->31 injected 75 Loading BitLocker PowerShell Module 19->75 34 WmiPrvSE.exe 19->34         started        36 conhost.exe 19->36         started        38 conhost.exe 21->38         started        40 conhost.exe 23->40         started        42 conhost.exe 25->42         started        process9 signatures10 103 Found direct / indirect Syscall (likely to bypass EDR) 31->103 44 MuiUnattend.exe 31->44         started        process11 signatures12 95 Tries to steal Mail credentials (via file / registry access) 44->95 97 Tries to harvest and steal browser information (history, passwords, etc) 44->97 99 Modifies the context of a thread in another process (thread injection) 44->99 101 3 other signatures 44->101 47 IF13pUhpNjQ.exe 44->47 injected 51 firefox.exe 44->51         started        process13 dnsIp14 67 www.visionaryb.site 67.223.117.189, 52909, 52926, 52942 VIMRO-AS15189US United States 47->67 69 nocoma.berlin 217.160.0.167, 52997, 53013, 53025 ONEANDONE-ASBrauerstrasse48DE Germany 47->69 71 9 other IPs or domains 47->71 77 Found direct / indirect Syscall (likely to bypass EDR) 47->77 signatures15
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/4ad59341983721e993d8e08ed447a71481b01e0b6afa50251ae312cee4b17805
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/4ad59341983721e993d8e08ed447a71481b01e0b6afa50251ae312cee4b17805/
Threat name:
Win32.Infostealer.Generic
Create hunting rule
Status:
Suspicious
First seen:
2025-01-28 05:28:05 UTC
File Type:
PE (.Net Exe)
Extracted files:
39
AV detection:
21 of 24 (87.50%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=jlkzgqmyg4q6te6y4chnir5hcsa3ahqlnl5faji24mjm5zfrpacq._file
Verdict:
malicious
Label(s):
unknown_loader_037
Create hunting rule
Similar samples:
28a65019d2736dd82fdb229c9e6f5ff053c25e095d118ae03359238f44ba22d7
Formbook
55864751fb6be8d2789f4e3789bd2794a9e7cbcf39d472f6a4da1d4ca2f50758
Formbook
804cb8891f2829caf32366e9efbbeedd19eab55288ca94702d1c29ffded6d463
Formbook
98a11f5e0943f5a8e0475b4c7d87b5f67a1d39f7c44e564d86df4ebd687686f8
Formbook
d80246672d337713cd5dbae257d6cd81acdbb3b4328141a1bec0a735b9618d71
Formbook
error
Formbook
+ 38 additional samples on MalwareBazaar
Result
Malware family:
n/a
Score:
  8/10
Tags:
discovery execution
Link:
https://tria.ge/reports/250128-f5z23syqaj/
Behaviour
Scheduled Task/Job: Scheduled Task
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
System Location Discovery: System Language Discovery
Suspicious use of SetThreadContext
Checks computer location settings
Command and Scripting Interpreter: PowerShell
Verdict:
Malicious
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/8cff6fdd-5b10-4101-9883-658c428f27aa
Unpacked files
SH256 hash:
066ac4c3eea3cbeb5da1eb5a154e65569a6e526c00d5a8aaab467eaabceeb749
MD5 hash:
068a011b4d7815a7bf3e31876273ecc1
SHA1 hash:
47f89db56d5cd6da0882d38850a08e9743d32829
Link:
https://www.unpac.me/results/b94d66bb-9c3a-4043-90c4-f48f644216c0/
SH256 hash:
f949dcb50b0591d6986a229301badb6d8814f5a08be2bf40e8483a9e504e5c09
MD5 hash:
1f24e5b3c19bb85f071846f51a621fdf
SHA1 hash:
c40d9e3d6c6d2f30756c6998a2fcdad72dc29f03
Link:
https://www.unpac.me/results/b94d66bb-9c3a-4043-90c4-f48f644216c0/
SH256 hash:
734f8544c089b244fa737e11e077a024e13588b912fe45995b803e2c7f190b35
MD5 hash:
3d16f1a1e9250d9b99f801f7f60c3d3d
SHA1 hash:
5eb3e802e99952732e6287fe47721b932e03da9c
Detections:
SUSP_OBF_NET_ConfuserEx_Name_Pattern_Jan24
Create hunting rule
SUSP_OBF_NET_Reactor_Indicators_Jan24
Create hunting rule
Link:
https://www.unpac.me/results/b94d66bb-9c3a-4043-90c4-f48f644216c0/
SH256 hash:
8b7b3267d755cecc7740a89e8e78722e01700751699729e7f53ce1f31506922a
MD5 hash:
f88883ee4331c35ddcd099c0690536ce
SHA1 hash:
00ba35035ce5071b220eb937b12ab5e0e9a38b7f
Detections:
SUSP_OBF_NET_ConfuserEx_Name_Pattern_Jan24
Create hunting rule
Link:
https://www.unpac.me/results/b94d66bb-9c3a-4043-90c4-f48f644216c0/
SH256 hash:
4ad59341983721e993d8e08ed447a71481b01e0b6afa50251ae312cee4b17805
MD5 hash:
08e23ac40b1f3db7f20c5e7b619b99ac
SHA1 hash:
fb9e5df43c3bcf763238a37158ac5afd69322605
Link:
https://www.unpac.me/results/b94d66bb-9c3a-4043-90c4-f48f644216c0/
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/4ad593419837/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_KB_CERT_7c1118cbbadc95da3752c46e47a27438
Create hunting rule
Author:ditekSHen
Description:Detects executables signed with stolen, revoked or invalid certificates
Rule name:NET
Create hunting rule
Author:malware-lu
Rule name:NETexecutableMicrosoft
Create hunting rule
Author:malware-lu
Rule name:PE_Digital_Certificate
Create hunting rule
Author:albertzsigovits
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
Rule name:Sus_Obf_Enc_Spoof_Hide_PE
Create hunting rule
Author:XiAnzheng
Description:Check for Overlay, Obfuscating, Encrypting, Spoofing, Hiding, or Entropy Technique(can create FP)

File information

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

Malspam

Formbook

Executable exe 4ad59341983721e993d8e08ed447a71481b01e0b6afa50251ae312cee4b17805

(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