MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 8081e0bda5a4d7cf536969b1a62ec3d550d1f806e189ee4a6eb14524b4eb9c64. 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 14 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 8081e0bda5a4d7cf536969b1a62ec3d550d1f806e189ee4a6eb14524b4eb9c64
SHA3-384 hash: 0fd37febd404918fccaabb17babfb7d30f34d39bf5e1e93218bae00dbc7782ca66b6e7effbdbb1f6267c30d27b527e15
SHA1 hash: d65ba5177efa64befe9f88b86cd2cde6c2b4d719
MD5 hash: 8a299278d47a73e95b2308425d822b11
humanhash: finch-london-princess-bluebird
File name:IMAGE_0010.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:729'200 bytes
First seen:2024-04-03 12:57:22 UTC
Last seen:2024-04-08 07:50:28 UTC
File type:Executable exe
MIME type:application/x-dosexec
ssdeep 12288:rQb/kDAw5zCl8YcLcR860if1cV8/7gjTo10hCojXUNlI2PMbhV+HZB2ukO:sTk8w5zE/zD7Ivos7XUNl1P0hV+SukO
Threatray 264 similar samples on MalwareBazaar
TLSH T156F412076E697061D68DAB37387E6A4C013B6E6FBCE5E20B494C7198E3337C11562E93
TrID 44.4% (.EXE) Win64 Executable (generic) (10523/12/4)
21.3% (.EXE) Win16 NE executable (generic) (5038/12/1)
8.7% (.ICL) Windows Icons Library (generic) (2059/9)
8.5% (.EXE) OS/2 Executable (generic) (2029/13)
8.4% (.EXE) Generic Win/DOS Executable (2002/3)
File icon (PE):PE icon
dhash icon 4c33d8d4d4d8324c (40 x AgentTesla, 23 x RedLineStealer, 15 x RemcosRAT)
Reporter adrian__luca
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
3
# of downloads :
297
Origin country :
HU HU
Vendor Threat Intelligence
Malware family:
formbook
Create hunting rule
ID:
1
File name:
8081e0bda5a4d7cf536969b1a62ec3d550d1f806e189ee4a6eb14524b4eb9c64.exe
Verdict:
Malicious activity
Analysis date:
2024-04-03 13:05:19 UTC
Tags:
formbook xloader
Link:
https://app.any.run/tasks/c2c4fa81-9050-4d5f-860b-287dfcb90ce9

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
Launching a process
Searching for synchronization primitives
Launching the default Windows debugger (dwwin.exe)
Сreating synchronization primitives
Unauthorized injection to a recently created process
Unauthorized injection to a recently created process by context flags manipulation
Unauthorized injection to a system process
Verdict:
Likely Malicious
Threat level:
  7.5/10
Confidence:
100%
Tags:
overlay packed
Link:
https://www.filescan.io/uploads/660d526bd463a7b0477deb6b/reports/90119ea7-d795-48ee-8e69-203cdfbcb185/overview
Verdict:
Malicious
Labled as:
Trojan.Generic
Link:
https://www.hybrid-analysis.com/sample/8081e0bda5a4d7cf536969b1a62ec3d550d1f806e189ee4a6eb14524b4eb9c64
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.
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/5188930b-af36-4800-9a46-4ba818785313
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
expl.evad.troj.spyw
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1419413
Signature
Antivirus / Scanner detection for submitted sample
Antivirus detection for URL or domain
Found direct / indirect Syscall (likely to bypass EDR)
Initial sample is a PE file and has a suspicious name
Injects a PE file into a foreign processes
Machine Learning detection for sample
Malicious sample detected (through community Yara rule)
Maps a DLL or memory area into another process
Multi AV Scanner detection for domain / URL
Multi AV Scanner detection for submitted file
Performs DNS queries to domains with low reputation
Queues an APC in another process (thread injection)
Snort IDS alert for network traffic
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Tries to harvest and steal browser information (history, passwords, etc)
Tries to steal Mail credentials (via file / registry access)
Writes to foreign memory regions
Yara detected FormBook
Yara detected UAC Bypass using CMSTP
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1419413 Sample: IMAGE_0010.exe Startdate: 03/04/2024 Architecture: WINDOWS Score: 100 32 www.noucos.xyz 2->32 34 www.wiseclients.org 2->34 36 13 other IPs or domains 2->36 44 Snort IDS alert for network traffic 2->44 46 Multi AV Scanner detection for domain / URL 2->46 48 Malicious sample detected (through community Yara rule) 2->48 52 7 other signatures 2->52 10 IMAGE_0010.exe 2 2->10         started        signatures3 50 Performs DNS queries to domains with low reputation 32->50 process4 signatures5 64 Tries to detect sandboxes and other dynamic analysis tools (process name or module or function) 10->64 66 Writes to foreign memory regions 10->66 68 Injects a PE file into a foreign processes 10->68 13 aspnet_wp.exe 10->13         started        16 WerFault.exe 22 16 10->16         started        18 WerFault.exe 16 10->18         started        process6 signatures7 72 Maps a DLL or memory area into another process 13->72 20 dbICJFVRxvOmfxAtZDEkCaOGXYo.exe 13->20 injected process8 signatures9 54 Found direct / indirect Syscall (likely to bypass EDR) 20->54 23 DevicePairingWizard.exe 13 20->23         started        process10 signatures11 56 Tries to steal Mail credentials (via file / registry access) 23->56 58 Tries to harvest and steal browser information (history, passwords, etc) 23->58 60 Writes to foreign memory regions 23->60 62 3 other signatures 23->62 26 dbICJFVRxvOmfxAtZDEkCaOGXYo.exe 23->26 injected 30 firefox.exe 23->30         started        process12 dnsIp13 38 www.bormujos.email 217.160.0.193, 49758, 49759, 49760 ONEANDONE-ASBrauerstrasse48DE Germany 26->38 40 www.biotecnology.org 217.76.156.252, 49740, 49741, 49742 ONEANDONE-ASBrauerstrasse48DE Spain 26->40 42 8 other IPs or domains 26->42 70 Found direct / indirect Syscall (likely to bypass EDR) 26->70 signatures14
Score:
81%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/8081e0bda5a4d7cf536969b1a62ec3d550d1f806e189ee4a6eb14524b4eb9c64
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/8081e0bda5a4d7cf536969b1a62ec3d550d1f806e189ee4a6eb14524b4eb9c64/
Threat name:
ByteCode-MSIL.Trojan.Leonem
Create hunting rule
Status:
Malicious
First seen:
2024-03-29 06:01:07 UTC
File Type:
PE+ (.Net Exe)
Extracted files:
4
AV detection:
17 of 24 (70.83%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=qca6bpnfutl46u3jngy2mlwd2vind6ag4ge64stowfcsjnhltrsa._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Similar samples:
0cb284abb63cf61b070bfa0a5250ff536f92907bbf5eec07070b9aeafa4ac2bd
Formbook
25ddae2daf0f3117cfed10da3447d26c5291a324b44534ed692a873934bac628
Formbook
8cb37e1ab48747e7fb63dd2ac1bffe1c9f0fa98c160613922a995935d6abd2cc
Formbook
96b2160da785abf50af26520f1bc1743e962f24bf983b5ddee8591bdedd0f035
Formbook
99450e636243dad54861d58c1e62fae329b69b4c9af6ed1f53fba851d20b2fa7
Formbook
bf1f882e2a1d0e35207cd7cab867bffe933e134e43ff317acf2db538bd4d7210
Formbook
c7a16881f8c69d16a9b0bdcbfdd5c4aada81eba19521d1c03ee7f6005f7d6629
Formbook
d545f5b27e90abc54cf5a37c35e866c08336a500cecd95e8267c0c729a6b9bbc
Formbook
dfa384f6136c43639f6c66766ca81c245e65a70fcf92015656b1cd7a579a3647
Formbook
+ 254 additional samples on MalwareBazaar
Result
Malware family:
n/a
Score:
  8/10
Tags:
persistence
Link:
https://tria.ge/reports/240403-p7jbsadg77/
Behaviour
Modifies Internet Explorer settings
Runs regedit.exe
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of UnmapMainImage
Suspicious use of WriteProcessMemory
Suspicious use of SetThreadContext
Adds Run key to start application
Adds policy Run key to start application
Unpacked files
SH256 hash:
8081e0bda5a4d7cf536969b1a62ec3d550d1f806e189ee4a6eb14524b4eb9c64
MD5 hash:
8a299278d47a73e95b2308425d822b11
SHA1 hash:
d65ba5177efa64befe9f88b86cd2cde6c2b4d719
Link:
https://www.unpac.me/results/473114dd-946e-40c7-90e5-b2a165333369/
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/8081e0bda5a4/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Formbook
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/8081e0bda5a4d7cf536969b1a62ec3d550d1f806e189ee4a6eb14524b4eb9c64

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: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: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:shellcode
Create hunting rule
Author:nex
Description:Matched shellcode byte patterns

File information

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

Malspam

Formbook

Executable exe 8081e0bda5a4d7cf536969b1a62ec3d550d1f806e189ee4a6eb14524b4eb9c64

(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