MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 4d49933551f01cc730f63fd290ecb61f4bfa880a0660f0ec7363e148ef85645a. 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 17 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 4d49933551f01cc730f63fd290ecb61f4bfa880a0660f0ec7363e148ef85645a
SHA3-384 hash: 7b3a12a4fcf87689e2a834026e2f0a171ac131eab48371aa922d5ca708642c6e10841e568837d85ecb56d938b0af7789
SHA1 hash: 594abbcf69862f343c0ce75716da5607ab6bbaed
MD5 hash: d9d98d244f3d4779c8aa532562ffb536
humanhash: table-zebra-floor-victor
File name:Payment Receipt.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:663'040 bytes
First seen:2025-01-14 14:49:57 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'649 x AgentTesla, 19'461 x Formbook, 12'202 x SnakeKeylogger)
ssdeep 12288:+YRxA4Y5lyA/BxSPCgPGT5GrNz72lYBjonsMqfGx7OnOSSGsR8CleigAVJTsxZtK:ZROUrF8K0qq0OEfCQjUszE
TLSH T104E4F1647229E807C5971FB10A22D3F91779AD99E920D303DFEA3EFB7C36A1515803A1
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
Reporter James_inthe_box
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
1
# of downloads :
370
Origin country :
US US
Vendor Threat Intelligence
Verdict:
Malicious
Score:
96.5%
Link:
https://cyber-fortress.com/docs/result/index.php?id=6786799c4487910100dee83a
Tags:
shell virus msil
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
Unauthorized injection to a browser process
Verdict:
Likely Malicious
Threat level:
  7.5/10
Confidence:
100%
Tags:
masquerade obfuscated packed packed packer_detected
Link:
https://www.filescan.io/uploads/678679a4378c50dc993fd2d1/reports/b8866855-b354-44e7-bcf3-94291216672c/overview
Verdict:
Malicious
Labled as:
Win/malicious_confidence_100%
Link:
https://www.hybrid-analysis.com/sample/4d49933551f01cc730f63fd290ecb61f4bfa880a0660f0ec7363e148ef85645a
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/340be8f2-9c46-488b-8591-23d34489ead6
Result
Threat name:
FormBook, PureLog Stealer
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1590981
Signature
Adds a directory exclusion to Windows Defender
AI detected suspicious sample
Allocates memory in foreign processes
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Found direct / indirect Syscall (likely to bypass EDR)
Found malware configuration
Initial sample is a PE file and has a suspicious name
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)
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Performs DNS queries to domains with low reputation
Queues an APC in another process (thread injection)
Sample uses process hollowing technique
Sigma detected: Powershell Base64 Encoded MpPreference Cmdlet
Sigma detected: Scheduled temp file as task from temp location
Switches to a custom stack to bypass stack traces
Tries to detect virtualization through RDTSC time measurements
Tries to resolve many domain names, but no domain seems valid
Uses netstat to query active network connections and open ports
Uses schtasks.exe or at.exe to add and modify task schedules
Writes to foreign memory regions
Yara detected AntiVM3
Yara detected FormBook
Yara detected PureLog Stealer
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1590981 Sample: Payment Receipt.exe Startdate: 14/01/2025 Architecture: WINDOWS Score: 100 60 www.enelog.xyz 2->60 62 www.eepvid.xyz 2->62 64 11 other IPs or domains 2->64 78 Found malware configuration 2->78 80 Malicious sample detected (through community Yara rule) 2->80 82 Antivirus detection for URL or domain 2->82 86 13 other signatures 2->86 11 Payment Receipt.exe 7 2->11         started        15 xnnxAkrxh.exe 5 2->15         started        signatures3 84 Performs DNS queries to domains with low reputation 62->84 process4 file5 52 C:\Users\user\AppData\Roaming\xnnxAkrxh.exe, PE32 11->52 dropped 54 C:\Users\...\xnnxAkrxh.exe:Zone.Identifier, ASCII 11->54 dropped 56 C:\Users\user\AppData\Local\...\tmpC62F.tmp, XML 11->56 dropped 58 C:\Users\user\...\Payment Receipt.exe.log, ASCII 11->58 dropped 96 Writes to foreign memory regions 11->96 98 Allocates memory in foreign processes 11->98 100 Adds a directory exclusion to Windows Defender 11->100 17 MSBuild.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        102 Multi AV Scanner detection for dropped file 15->102 104 Machine Learning detection for dropped file 15->104 106 Injects a PE file into a foreign processes 15->106 26 MSBuild.exe 15->26         started        28 schtasks.exe 15->28         started        signatures6 process7 signatures8 66 Modifies the context of a thread in another process (thread injection) 17->66 68 Maps a DLL or memory area into another process 17->68 70 Sample uses process hollowing technique 17->70 76 3 other signatures 17->76 30 explorer.exe 83 1 17->30 injected 72 Loading BitLocker PowerShell Module 20->72 33 conhost.exe 20->33         started        35 WmiPrvSE.exe 20->35         started        37 conhost.exe 22->37         started        39 conhost.exe 24->39         started        74 Found direct / indirect Syscall (likely to bypass EDR) 26->74 41 conhost.exe 28->41         started        process9 signatures10 108 Uses netstat to query active network connections and open ports 30->108 43 systray.exe 30->43         started        46 NETSTAT.EXE 30->46         started        process11 signatures12 88 Modifies the context of a thread in another process (thread injection) 43->88 90 Maps a DLL or memory area into another process 43->90 92 Tries to detect virtualization through RDTSC time measurements 43->92 94 Switches to a custom stack to bypass stack traces 43->94 48 cmd.exe 43->48         started        process13 process14 50 conhost.exe 48->50         started       
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/4d49933551f01cc730f63fd290ecb61f4bfa880a0660f0ec7363e148ef85645a
Detection:
formbook
Create hunting rule
Link:
https://mwdb.cert.pl/sample/4d49933551f01cc730f63fd290ecb61f4bfa880a0660f0ec7363e148ef85645a/
Threat name:
ByteCode-MSIL.Trojan.SnakeLogger
Create hunting rule
Status:
Malicious
First seen:
2025-01-14 07:52:36 UTC
File Type:
PE (.Net Exe)
Extracted files:
9
AV detection:
25 of 38 (65.79%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=jvezgnkr6aomomhwh7jjb3fwd5f7vcakazqpb3dtmpqur34fmrna._file
Result
Malware family:
formbook
Create hunting rule
Score:
  10/10
Tags:
family:formbook campaign:a03d discovery execution rat spyware stealer trojan
Link:
https://tria.ge/reports/250114-r7kkys1kct/
Behaviour
Scheduled Task/Job: Scheduled Task
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
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
Formbook payload
Formbook
Formbook family
Verdict:
Malicious
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/b58f5627-b254-4a08-82b9-b94e1ccdbd49
Unpacked files
SH256 hash:
4f59ffd1f9e8b2088120692bae2d99ddf906cab5d98435baad7ac4073ca0fe81
MD5 hash:
6782ca1720c77e90ba84e9ab5ba4f07d
SHA1 hash:
79e819dde4a4b29ca3a221f89cf73f1fd818f1de
Detections:
FormBook
Create hunting rule
win_formbook_auto
Create hunting rule
win_formbook_g0
Create hunting rule
win_formbook_w0
Create hunting rule
Windows_Trojan_Formbook
Create hunting rule
Formbook
Create hunting rule
Link:
https://www.unpac.me/results/22e7b355-0721-4a45-bb23-1218229f1caf/
Parent samples :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 hash:
6ad1d6e03111ce1a6141acd597b4a7c4d2737110c6c44f6f9fea8e8e9670581f
MD5 hash:
9a7282f229a45d3a8a8beb95debcf64c
SHA1 hash:
48c3922da644f5931352c274a2dc8ebdda786648
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/22e7b355-0721-4a45-bb23-1218229f1caf/
SH256 hash:
3aa7ca05584211acc2467c39553e7a045c6b5ba59ff266127801be4cddbd0cbb
MD5 hash:
35e1b4bc5de79edb713c8692cb4efd38
SHA1 hash:
06e23eedcbfa52850fd10fb7764431a452b90a7e
Detections:
SUSP_OBF_NET_Reactor_Indicators_Jan24
Create hunting rule
Link:
https://www.unpac.me/results/22e7b355-0721-4a45-bb23-1218229f1caf/
Parent samples :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 hash:
4d49933551f01cc730f63fd290ecb61f4bfa880a0660f0ec7363e148ef85645a
MD5 hash:
d9d98d244f3d4779c8aa532562ffb536
SHA1 hash:
594abbcf69862f343c0ce75716da5607ab6bbaed
Link:
https://www.unpac.me/results/22e7b355-0721-4a45-bb23-1218229f1caf/
Malware family:
FormBook
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/4d49933551f0/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/4d49933551f01cc730f63fd290ecb61f4bfa880a0660f0ec7363e148ef85645a

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__API
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
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:DebuggerException__SetConsoleCtrl
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:golang_bin_JCorn_CSC846
Create hunting rule
Author:Justin Cornwell
Description:CSC-846 Golang detection ruleset
Rule name:MD5_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for MD5 constants
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: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 4d49933551f01cc730f63fd290ecb61f4bfa880a0660f0ec7363e148ef85645a

(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