MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 58dfe85f084bedbc1861ed4afada8f0e284a70e10c84065cc6df13adc9fb45db. 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: 19


Intelligence 19 IOCs YARA 21 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 58dfe85f084bedbc1861ed4afada8f0e284a70e10c84065cc6df13adc9fb45db
SHA3-384 hash: b7ff237bf344f63d1934ecdd33b575bc298455f477b586f007b1902672150b59cb65ae75a1966c0d1d114caef9469ba1
SHA1 hash: 2ea4625d31a8c4fa8e6c9b3bc4abecc6341fe788
MD5 hash: 40a0efae53cd30740fd47e5f79a46eae
humanhash: carpet-magazine-carolina-asparagus
File name:TKq18zZ3Rtcbhfd.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:706'560 bytes
First seen:2025-01-13 09:04:30 UTC
Last seen:2025-01-13 09:30:36 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'657 x AgentTesla, 19'469 x Formbook, 12'208 x SnakeKeylogger)
ssdeep 12288:Qiv1uq3JfXyN9u9A0NAUFE/P37NfmAl12tZ9uLUxL7HNHJTs/m:RNuqfC/unmUQ7NpqLB
TLSH T1FFE4E02426ACD602D0A26FB41932D3F847796E89A920CB1B8FD97DEF7D3671175403A3
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 176d926969b24d17 (3 x Formbook, 2 x MassLogger, 1 x LummaStealer)
Reporter Anonymous
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
3
# of downloads :
436
Origin country :
PL PL
Vendor Threat Intelligence
Malware family:
formbook
Create hunting rule
ID:
1
File name:
TKq18zZ3Rtcbhfd.exe
Verdict:
Malicious activity
Analysis date:
2025-01-13 09:06:00 UTC
Tags:
netreactor formbook
Link:
https://app.any.run/tasks/921f0140-a687-494d-998f-48a34c3d5cd3

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection(s):
SecuriteInfo.com.Win32.RATX-gen.2991.16995.UNOFFICIAL
Create hunting rule

Verdict:
Malicious
Score:
96.5%
Link:
https://cyber-fortress.com/docs/result/index.php?id=6784d7404487910100de7d8b
Tags:
virus micro 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
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:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
obfuscated packed packed packer_detected vbnet
Link:
https://www.filescan.io/uploads/6784d747d62d8b6606d21fdb/reports/497d3281-65be-4f22-af5e-134e3a3b541c/overview
Verdict:
Malicious
Labled as:
Win/malicious_confidence_100%
Link:
https://www.hybrid-analysis.com/sample/58dfe85f084bedbc1861ed4afada8f0e284a70e10c84065cc6df13adc9fb45db
Result
Verdict:
UNKNOWN
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/af5651b0-4080-4bcf-809c-546a91c8146d
Result
Threat name:
FormBook, PureLog Stealer
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1589898
Signature
Adds a directory exclusion to Windows Defender
AI detected suspicious sample
Antivirus / Scanner detection for submitted sample
Antivirus detection for dropped file
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Found direct / indirect Syscall (likely to bypass EDR)
Found malware configuration
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
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
Uses schtasks.exe or at.exe to add and modify task schedules
Yara detected AntiVM3
Yara detected FormBook
Yara detected PureLog Stealer
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1589898 Sample: TKq18zZ3Rtcbhfd.exe Startdate: 13/01/2025 Architecture: WINDOWS Score: 100 61 www.yblinds.xyz 2->61 63 www.vorachem.xyz 2->63 65 4 other IPs or domains 2->65 79 Found malware configuration 2->79 81 Malicious sample detected (through community Yara rule) 2->81 83 Antivirus detection for URL or domain 2->83 87 11 other signatures 2->87 11 TKq18zZ3Rtcbhfd.exe 7 2->11         started        15 ChQJmcO.exe 5 2->15         started        signatures3 85 Performs DNS queries to domains with low reputation 63->85 process4 file5 53 C:\Users\user\AppData\Roaming\ChQJmcO.exe, PE32 11->53 dropped 55 C:\Users\user\...\ChQJmcO.exe:Zone.Identifier, ASCII 11->55 dropped 57 C:\Users\user\AppData\Local\...\tmpB94E.tmp, XML 11->57 dropped 59 C:\Users\user\...\TKq18zZ3Rtcbhfd.exe.log, ASCII 11->59 dropped 89 Uses schtasks.exe or at.exe to add and modify task schedules 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 Antivirus detection for dropped file 15->93 95 Multi AV Scanner detection for dropped file 15->95 97 Machine Learning detection for dropped file 15->97 26 RegSvcs.exe 15->26         started        28 schtasks.exe 15->28         started        30 RegSvcs.exe 15->30         started        signatures6 process7 signatures8 67 Modifies the context of a thread in another process (thread injection) 17->67 69 Maps a DLL or memory area into another process 17->69 71 Sample uses process hollowing technique 17->71 77 2 other signatures 17->77 32 explorer.exe 38 1 17->32 injected 73 Loading BitLocker PowerShell Module 20->73 34 WmiPrvSE.exe 20->34         started        36 conhost.exe 20->36         started        38 conhost.exe 22->38         started        40 conhost.exe 24->40         started        75 Found direct / indirect Syscall (likely to bypass EDR) 26->75 42 conhost.exe 28->42         started        process9 process10 44 mstsc.exe 32->44         started        47 WWAHost.exe 32->47         started        signatures11 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->103 105 Switches to a custom stack to bypass stack traces 44->105 49 cmd.exe 44->49         started        process12 process13 51 conhost.exe 49->51         started       
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/58dfe85f084bedbc1861ed4afada8f0e284a70e10c84065cc6df13adc9fb45db
Detection:
formbook
Create hunting rule
Link:
https://mwdb.cert.pl/sample/58dfe85f084bedbc1861ed4afada8f0e284a70e10c84065cc6df13adc9fb45db/
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
Create hunting rule
Status:
Malicious
First seen:
2025-01-13 03:23:39 UTC
File Type:
PE (.Net Exe)
Extracted files:
8
AV detection:
18 of 24 (75.00%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=ldp6qxyijpw3ygdb5vfpvwupbyueu4hbbscamxgg34j23sp3ixnq._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
unknown_loader_037
Create hunting rule
Similar samples:
error
Formbook
Result
Malware family:
formbook
Create hunting rule
Score:
  10/10
Tags:
family:formbook campaign:a02d discovery execution rat spyware stealer trojan
Link:
https://tria.ge/reports/250113-k16raawlgt/
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/d68df101-d63f-4782-b38c-7e4e1d69e806
Unpacked files
SH256 hash:
660794bbc60c8f1fddb6761d17f6689dae887448f0adae4018150ab3798c21af
MD5 hash:
074ec1317c95d36844ee57e0f9371bc0
SHA1 hash:
bfcc2a6300d103477ecc73a7f711d4aa6ffebc28
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/1f68fbdb-9888-4451-84c4-9966642cd2f3/
Parent samples :
e72ec7940eefc32cbb4e9361ccf0ccd56d918514227dd535e2ca501589c70233
e64639cc4061ca733acf32ca7518b8d30de90f26df61800683dc5817b5237ee2
397015a1428f2ee24e69d670f97b98f744039041eaea4e9836a27b01ce96b793
4666a51c6fef5c674a2f9596f5dfc485d0ed15646c1009ae3b586ddc78ed0910
58dfe85f084bedbc1861ed4afada8f0e284a70e10c84065cc6df13adc9fb45db
24e7335ab9d5e3232a8434d8e48a72e3b4a537f5496f3bfec0ef88a2359157c6
51f6f6e72cfb335f6e1d7936e91362c7993253ed665b772099327f90e5119682
73c0f45b365444e09376cbea6f71b5f877af98eec65f809a6b078f206a6d4430
339c521fe6235de8b0b912c9fffcad6cc2eab721902ac095bafa510d68868c97
e69d37275cc3b52a9d3a26f76073191ab8f59901781b5ef2859f33dee2252ddc
efd65e32b20afe5bd0541a097bb5f4e7f741875b2c65cab7f08c04a645ccdf6f
422bb7209a36ebb05303bbf0e6de6e1fcaef855b360f658eeee67ff9dd49d5bf
28a65019d2736dd82fdb229c9e6f5ff053c25e095d118ae03359238f44ba22d7
60ccea072df0c91b1b0f2cc18a88eff5e373c68f4d13c7d93e66fb17d211ec9e
SH256 hash:
985af029d941a5926f25caa5a6563583be3342707247b08b767c5da18998e3ee
MD5 hash:
3e5bbfcfa8eb1a18270a8756b6c55180
SHA1 hash:
de48a93b9b04cc7a4c1e6768d365093fa3ca2436
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/1f68fbdb-9888-4451-84c4-9966642cd2f3/
SH256 hash:
fe26a8a1df970da362283c68cfb162d4f1acc95a82ef2e8046a567083e658465
MD5 hash:
cd4c77cd32b55506c5682eba826ef4fa
SHA1 hash:
2205c17610803a3dbc2523a753f17cf9de0bc5b2
Detections:
SUSP_OBF_NET_Reactor_Indicators_Jan24
Create hunting rule
Link:
https://www.unpac.me/results/1f68fbdb-9888-4451-84c4-9966642cd2f3/
Parent samples :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 hash:
58dfe85f084bedbc1861ed4afada8f0e284a70e10c84065cc6df13adc9fb45db
MD5 hash:
40a0efae53cd30740fd47e5f79a46eae
SHA1 hash:
2ea4625d31a8c4fa8e6c9b3bc4abecc6341fe788
Link:
https://www.unpac.me/results/1f68fbdb-9888-4451-84c4-9966642cd2f3/
Malware family:
FormBook
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/58dfe85f084b/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/58dfe85f084bedbc1861ed4afada8f0e284a70e10c84065cc6df13adc9fb45db

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: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:JPCERT/CC Incident Response Group
Description:detect Formbook in memory
Reference:internal research
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: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: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)
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

rar 190df53d774c520a1ad8bd531f990aede256f9b85900e22823f04a7b07df4166

Formbook

Executable exe 58dfe85f084bedbc1861ed4afada8f0e284a70e10c84065cc6df13adc9fb45db

(this sample)

  
Dropped by
SHA256 190df53d774c520a1ad8bd531f990aede256f9b85900e22823f04a7b07df4166
  
Dropped by
MD5 b3e869364a6ab0983753473a265123ec
  
Dropped by
SHA256 68ba3f9a082ded6a25a1e3d6ada59241d73c631e8ddd7fca33856595212af383
  
Dropped by
MD5 a7b1db19fdc8c266c287a3180fa482ea

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