MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 761930655c92d23751075c7399bc4d384270fdeab881a8c486de0362a976b4d0. 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: 20


Intelligence 20 IOCs YARA 5 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 761930655c92d23751075c7399bc4d384270fdeab881a8c486de0362a976b4d0
SHA3-384 hash: 49f2fe809ebaf304a30303d92ea3c2713204dbb9371b3fe72bb88456e32bb16769e2d5866e15a798f140870745248b59
SHA1 hash: 12dd6b363e9d841bce3fd0c007b1e84796909149
MD5 hash: 6341110aa0627431093ef3c502f65669
humanhash: bakerloo-cold-kentucky-mango
File name:r8ykXfy52F9CXd5d.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:777'216 bytes
First seen:2024-09-11 20:17:07 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'744 x AgentTesla, 19'608 x Formbook, 12'242 x SnakeKeylogger)
ssdeep 12288:IQ11UoIG5MPUNDguQL6/Vt+uIMtBLn6TnfymJVDgP5BhMW+:lUobySgu26t/IMt16OmJidMW+
Threatray 517 similar samples on MalwareBazaar
TLSH T148F4CF0E53A04293F0186BB5D66D2E1903701D7D79D2E7D4FED5B2A7ADE1BA2083321B
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)
Magika pebin
File icon (PE):PE icon
dhash icon 6dd2d312dbc8cc49 (94 x Formbook, 5 x AgentTesla)
Reporter FXOLabs
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
1
# of downloads :
381
Origin country :
BR BR
Vendor Threat Intelligence
Malware family:
formbook
Create hunting rule
ID:
1
File name:
r8ykXfy52F9CXd5d.exe
Verdict:
Malicious activity
Analysis date:
2024-09-11 20:18:48 UTC
Tags:
formbook xloader stealer
Link:
https://app.any.run/tasks/b7d0e2b0-febf-48a2-b806-e62ea5ef48ec

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection(s):
Porcupine.MSIL.GenKryptik.HBIF.266304.UNOFFICIAL
Create hunting rule

Verdict:
Malicious
Score:
99.1%
Link:
https://cyber-fortress.com/docs/result/index.php?id=66e1fafc751db35a8b9f7af1
Tags:
Generic Network Static Stealth Msil
Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Unauthorized injection to a recently created process
Restart of the analyzed sample
Creating a file
Launching a process
Сreating synchronization primitives
Launching cmd.exe command interpreter
Setting browser functions hooks
Unauthorized injection to a system process
Unauthorized injection to a browser process
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
formbook infostealer overlay packed
Link:
https://www.filescan.io/uploads/66e1fafdac80a0110f67b37f/reports/fc49992d-30c4-4c02-9729-f92c79883063/overview
Verdict:
Malicious
Labled as:
Jalapeno.Generic
Link:
https://www.hybrid-analysis.com/sample/761930655c92d23751075c7399bc4d384270fdeab881a8c486de0362a976b4d0
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/4db8cd38-53b9-48ee-af44-e74f8c255b4b
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1509654
Signature
.NET source code contains potential unpacker
AI detected suspicious sample
Antivirus / Scanner detection for submitted sample
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Found direct / indirect Syscall (likely to bypass EDR)
Found malware configuration
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 submitted file
Queues an APC in another process (thread injection)
Sample uses process hollowing technique
Suricata IDS alerts for network traffic
Switches to a custom stack to bypass stack traces
System process connects to network (likely due to code injection or exploit)
Tries to detect virtualization through RDTSC time measurements
Yara detected AntiVM3
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1509654 Sample: r8ykXfy52F9CXd5d.exe Startdate: 11/09/2024 Architecture: WINDOWS Score: 100 33 www.shadow-walker.online 2->33 35 www.sedanghokiorg.info 2->35 37 13 other IPs or domains 2->37 45 Suricata IDS alerts for network traffic 2->45 47 Found malware configuration 2->47 49 Malicious sample detected (through community Yara rule) 2->49 51 9 other signatures 2->51 11 r8ykXfy52F9CXd5d.exe 3 2->11         started        signatures3 process4 file5 31 C:\Users\user\...\r8ykXfy52F9CXd5d.exe.log, ASCII 11->31 dropped 63 Tries to detect virtualization through RDTSC time measurements 11->63 65 Switches to a custom stack to bypass stack traces 11->65 15 r8ykXfy52F9CXd5d.exe 11->15         started        signatures6 process7 signatures8 67 Modifies the context of a thread in another process (thread injection) 15->67 69 Maps a DLL or memory area into another process 15->69 71 Sample uses process hollowing technique 15->71 73 2 other signatures 15->73 18 explorer.exe 71 7 15->18 injected process9 dnsIp10 39 parkingpage.namecheap.com 91.195.240.19, 60518, 80 SEDO-ASDE Germany 18->39 41 www.coldzero.top 192.74.233.8, 60517, 80 PEGTECHINCUS United States 18->41 43 shops.myshopify.com 23.227.38.74, 60519, 80 CLOUDFLARENETUS Canada 18->43 53 System process connects to network (likely due to code injection or exploit) 18->53 22 cscript.exe 18->22         started        25 autoconv.exe 18->25         started        signatures11 process12 signatures13 55 Modifies the context of a thread in another process (thread injection) 22->55 57 Maps a DLL or memory area into another process 22->57 59 Tries to detect virtualization through RDTSC time measurements 22->59 61 Switches to a custom stack to bypass stack traces 22->61 27 cmd.exe 1 22->27         started        process14 process15 29 conhost.exe 27->29         started       
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/761930655c92d23751075c7399bc4d384270fdeab881a8c486de0362a976b4d0
Detection:
formbook
Create hunting rule
Link:
https://mwdb.cert.pl/sample/761930655c92d23751075c7399bc4d384270fdeab881a8c486de0362a976b4d0/
Threat name:
Win32.Backdoor.FormBook
Create hunting rule
Status:
Malicious
First seen:
2024-09-07 17:44:21 UTC
File Type:
PE (.Net Exe)
Extracted files:
14
AV detection:
28 of 38 (73.68%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=oymtazk4sljdouihlrzztpcnhbbhb7pkxca2rreg3ybwfklwwtia._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Similar samples:
3c9bf33caa6aa11b1c87c50e1f0ae212744089508829a898bf7d9e7a3720d751
Formbook
3e4d309ea6393d0740a3bd93c83b208ac59b3ddf2626bb279942ac48003454de
Formbook
4a16f87ede74f8f5cf4af54e78a69380979b1147a8302cd371d50947c4a0f0fe
Formbook
bbb4d62f2db865624777d1d4413cfa6aac6139ef783befcff575a640a31e3a56
Formbook
+ 507 additional samples on MalwareBazaar
Result
Malware family:
formbook
Create hunting rule
Score:
  10/10
Tags:
family:formbook campaign:he2a discovery rat spyware stealer trojan
Link:
https://tria.ge/reports/240911-y29q8a1ere/
Behaviour
Enumerates system info in registry
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of UnmapMainImage
Suspicious use of WriteProcessMemory
System Location Discovery: System Language Discovery
Suspicious use of SetThreadContext
Deletes itself
Formbook payload
Formbook
Verdict:
Malicious
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/5988b5a8-097b-4b56-81ad-ecf2fcce6153
Unpacked files
SH256 hash:
f921549a051b326f6d4ed173ffb1cf7f42a7425c640f891ae6f41a8e99159e01
MD5 hash:
a6f4a41a3de1225afe98389d2669eb1d
SHA1 hash:
2ebd66b8fc73b977bb7089bd07f9eb334d8167c2
Detections:
FormBook
Create hunting rule
win_formbook_g0
Create hunting rule
win_formbook_auto
Create hunting rule
win_formbook_w0
Create hunting rule
Formbook
Create hunting rule
Link:
https://www.unpac.me/results/eff3da79-172a-4acd-b894-e2ef67ee6a4d/
Parent samples :
cc1b719f0ae40d0b53765aae8480474dbc7277428f56184d2dc94a0de5fbbf67
76ca3bedb80b3725aa6cded3b43770a23079f239afa5417d57b4b162f682c8bd
3c9bf33caa6aa11b1c87c50e1f0ae212744089508829a898bf7d9e7a3720d751
3e4d309ea6393d0740a3bd93c83b208ac59b3ddf2626bb279942ac48003454de
9f67248a754e414ffb2361932c591abe39581b21a20d51ccb46db5e534a9531c
761930655c92d23751075c7399bc4d384270fdeab881a8c486de0362a976b4d0
SH256 hash:
150c6e7de31574a3dc8c09d743987ec2c43c9bd0e6aecbf91042722359e3adc0
MD5 hash:
48815524d9fe314ab98f8df0b182908f
SHA1 hash:
a0e4dded97841cded11dce2a1b84670be882f22c
Link:
https://www.unpac.me/results/eff3da79-172a-4acd-b894-e2ef67ee6a4d/
SH256 hash:
b5509db82c28fe08dcc95f3bd2e356556b3a85322a56897925a3f65b0eb8fc38
MD5 hash:
6e78abb56a690ce18c5df6fd15bd2554
SHA1 hash:
4adf369d746c1b4570b8b69bd3ca4d40236f5076
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/eff3da79-172a-4acd-b894-e2ef67ee6a4d/
SH256 hash:
761930655c92d23751075c7399bc4d384270fdeab881a8c486de0362a976b4d0
MD5 hash:
6341110aa0627431093ef3c502f65669
SHA1 hash:
12dd6b363e9d841bce3fd0c007b1e84796909149
Link:
https://www.unpac.me/results/eff3da79-172a-4acd-b894-e2ef67ee6a4d/
Malware family:
FormBook
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/761930655c92/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/761930655c92d23751075c7399bc4d384270fdeab881a8c486de0362a976b4d0

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:NET
Create hunting rule
Author:malware-lu
Rule name:pe_imphash
Create hunting rule
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.

Malspam

Formbook

Executable exe 761930655c92d23751075c7399bc4d384270fdeab881a8c486de0362a976b4d0

(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

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