MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 81f6e3ff9cc821300e30acd628d0579793806ebfb89941d04f9bc33998f9a851. 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: 16


Intelligence 16 IOCs YARA 18 File information Comments
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SHA256 hash: 81f6e3ff9cc821300e30acd628d0579793806ebfb89941d04f9bc33998f9a851
SHA3-384 hash: 902b79feb3532272a274ea31eb629efcb071a8c763402bb1041460552b091643d75d9ea8947c8fa229815c4a08d5c382
SHA1 hash: bd6c023606236c1ccb74863680ca5e74029d3526
MD5 hash: ad400a4c8af415892429acb5886a5ee7
humanhash: cup-london-king-queen
File name:Olağanüstü ödeme.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:987'136 bytes
First seen:2024-04-18 10:05:55 UTC
Last seen:2024-04-18 10:44:26 UTC
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:eYsoBukMEbli8FwgY3zpQ43W/2bsJQG6JETe6dMM9DsMORFYNL8jWiqt+uIfHKdO:3sKlCgGU2QBoETe6u2DiRGJDiq4fHK4
Threatray 507 similar samples on MalwareBazaar
TLSH T10825D13C1CBD1A3B9075C2A9CFE98567F050D47B3912AD7A98D383A58346A9379C313E
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 abuse_ch
Tags:exe FormBook geo TUR

Intelligence

File Origin
# of uploads :
2
# of downloads :
359
Origin country :
NL NL
Vendor Threat Intelligence
Malware family:
formbook
Create hunting rule
ID:
1
File name:
81f6e3ff9cc821300e30acd628d0579793806ebfb89941d04f9bc33998f9a851.exe
Verdict:
Malicious activity
Analysis date:
2024-04-18 10:34:36 UTC
Tags:
formbook xloader stealer spyware
Link:
https://app.any.run/tasks/23d2c669-c73d-4169-873d-1fd579c2c2b3

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

Behaviour
Searching for the window
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:
Malicious
Labled as:
Win/malicious_confidence_100%
Link:
https://www.hybrid-analysis.com/sample/81f6e3ff9cc821300e30acd628d0579793806ebfb89941d04f9bc33998f9a851
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/aec46962-4454-4011-bac1-b853710b1252
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1428009
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)
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: Powershell Base64 Encoded MpPreference Cmdlet
Sigma detected: Rundll32 Execution Without CommandLine Parameters
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: 1428009 Sample: Ola#U011fan#U00fcst#U00fc #... Startdate: 18/04/2024 Architecture: WINDOWS Score: 100 67 y2llvq.vip 2->67 69 www.y2llvq.vip 2->69 71 15 other IPs or domains 2->71 85 Snort IDS alert for network traffic 2->85 87 Found malware configuration 2->87 89 Malicious sample detected (through community Yara rule) 2->89 91 13 other signatures 2->91 11 Ola#U011fan#U00fcst#U00fc #U00f6deme.exe 7 2->11         started        15 crgoUvJRylHdU.exe 5 2->15         started        signatures3 process4 file5 57 C:\Users\user\AppData\...\crgoUvJRylHdU.exe, PE32 11->57 dropped 59 C:\Users\user\AppData\Local\...\tmp337C.tmp, XML 11->59 dropped 93 Writes to foreign memory regions 11->93 95 Allocates memory in foreign processes 11->95 97 Adds a directory exclusion to Windows Defender 11->97 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        99 Multi AV Scanner detection for dropped file 15->99 101 Machine Learning detection for dropped file 15->101 103 Injects a PE file into a foreign processes 15->103 26 RegSvcs.exe 15->26         started        28 schtasks.exe 15->28         started        30 RegSvcs.exe 15->30         started        signatures6 process7 signatures8 73 Modifies the context of a thread in another process (thread injection) 17->73 75 Maps a DLL or memory area into another process 17->75 77 Sample uses process hollowing technique 17->77 81 2 other signatures 17->81 32 explorer.exe 56 1 17->32 injected 79 Loading BitLocker PowerShell Module 20->79 36 conhost.exe 20->36         started        38 WmiPrvSE.exe 20->38         started        40 conhost.exe 22->40         started        42 conhost.exe 24->42         started        44 conhost.exe 28->44         started        process9 dnsIp10 61 www.messyplayclub.com 197.221.14.71, 49713, 80 xneeloZA South Africa 32->61 63 vibelola.com 192.185.210.39, 49711, 80 UNIFIEDLAYER-AS-1US United States 32->63 65 3 other IPs or domains 32->65 83 System process connects to network (likely due to code injection or exploit) 32->83 46 rundll32.exe 32->46         started        49 rundll32.exe 32->49         started        51 conhost.exe 40->51         started        signatures11 process12 signatures13 105 Modifies the context of a thread in another process (thread injection) 46->105 107 Maps a DLL or memory area into another process 46->107 109 Tries to detect virtualization through RDTSC time measurements 46->109 53 cmd.exe 46->53         started        process14 process15 55 conhost.exe 53->55         started       
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/81f6e3ff9cc821300e30acd628d0579793806ebfb89941d04f9bc33998f9a851
Detection:
formbook
Create hunting rule
Link:
https://mwdb.cert.pl/sample/81f6e3ff9cc821300e30acd628d0579793806ebfb89941d04f9bc33998f9a851/
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
Create hunting rule
Status:
Malicious
First seen:
2024-04-18 08:15:31 UTC
File Type:
PE (.Net Exe)
Extracted files:
11
AV detection:
22 of 24 (91.67%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=qh3oh744zaqtadrqvtlcrucxs6jya3v7xcmuducptpbttghzvbiq._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Similar samples:
0a88a2e3cd7e300b0d55966ff1b19c3643739dd1bdeaada05f9e7f8841557202
Formbook
12fb27d7a59c168a82317baa0b127b8a826cc98dd108fc37fd022d8a842b06bc
Formbook
37fd7b8035bd49b8dfad405a793428dda8cbf623de0133818756d05a1191d8b7
Formbook
7b692628c5a43cef1780ecd6223c6fa9e40a1e45932db8456738ecd61700544d
Formbook
8ab205dc4d6f7c232cf9e2047a6abf4b2bb6425258cefeaf9b05e922c8229c6a
Formbook
9a565700a3d3c7a802780c0e4ba717b082175fd33b5afc7dcfeb95905b6db784
Formbook
b3dd3ec805692dca3ce544068053b8d4e85521265dd4a1392ecf0d47b2814c66
Formbook
d56e9061e7f6df6e094d1582d817c381f8ce9ac6c3925cba5da96464487a18b7
Formbook
ed70aaa765d3f4e890b381829f6ab14eef928f6fc9bc6207f83dec6695525924
Formbook
+ 497 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/240418-l43pgahh56/
Behaviour
Creates scheduled task(s)
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of UnmapMainImage
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
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/609f6eb9-0868-42c9-9f0e-eb3b321ae097/
Parent samples :
7b692628c5a43cef1780ecd6223c6fa9e40a1e45932db8456738ecd61700544d
81f6e3ff9cc821300e30acd628d0579793806ebfb89941d04f9bc33998f9a851
ae300b28b2240d11d01e9066a26a88349258d4016c41460604c9ff5bb64c9b6d
b7def3af905789a4ecedcc226d91592d8bc758ce8c5458d62ef435707de8670f
SH256 hash:
1c633f39a192f108f755e0bcf412e8489ad80781f3b7807c80892deb2526ff0d
MD5 hash:
e4b5d57e9e46a4e76075b5b92f71577f
SHA1 hash:
d76dc165724148193c6911cc75fc62c198737d3a
Link:
https://www.unpac.me/results/609f6eb9-0868-42c9-9f0e-eb3b321ae097/
Parent samples :
d89ea6a01347b82f963ed7960583e5d76c6a07e91852fae83bc290e0f64a06b2
3f700fd41c6cca501d50cc2f62afd8e0d951efc1a918aa65ab3e84ee563ff1d6
26a36920e7a463398a4251828ec02fd965ad1d782f819b0c04904706efb083be
SH256 hash:
775c1619a1ebc2986b142f0d733afaa101bfe25595b73badf3fbffce5a0b1db4
MD5 hash:
5c2f727b6b71acba0a7d5d0d754c6d6c
SHA1 hash:
70cda4da94b59b153e5a780fa7a4d63d9bc609da
Link:
https://www.unpac.me/results/609f6eb9-0868-42c9-9f0e-eb3b321ae097/
SH256 hash:
baa0bda022a64970c5be7e975198d5dd8229901e827b2bda8ed277c53e9fb950
MD5 hash:
1efe8c9276f935bf051c72a80a02d2c8
SHA1 hash:
13a1f62d3ad9375ca328ce8e393e4e235226bc3c
Link:
https://www.unpac.me/results/609f6eb9-0868-42c9-9f0e-eb3b321ae097/
SH256 hash:
81f6e3ff9cc821300e30acd628d0579793806ebfb89941d04f9bc33998f9a851
MD5 hash:
ad400a4c8af415892429acb5886a5ee7
SHA1 hash:
bd6c023606236c1ccb74863680ca5e74029d3526
Link:
https://www.unpac.me/results/609f6eb9-0868-42c9-9f0e-eb3b321ae097/
Malware family:
FormBook
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/81f6e3ff9cc8/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:Check_OutputDebugStringA_iat
Create hunting rule
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: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: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

File information

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

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

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