MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 3f6f83bb975f8b3c8ad23b715569cb2ebac4cee81f88c80262f624cc59de4e0d. 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 4 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 3f6f83bb975f8b3c8ad23b715569cb2ebac4cee81f88c80262f624cc59de4e0d
SHA3-384 hash: 3f4c227509c5d88f0082bba56f9c486f939ada114c429b5c295f7b171efb8dc6ba724b7754d3c6322953a20a6930e75e
SHA1 hash: 76b3ea8eb28e56a6948dde942acca625987e6a5c
MD5 hash: a76ac57c9cc52729718ea00787a5160d
humanhash: blossom-snake-angel-red
File name:Final bill of lading.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:782'848 bytes
First seen:2025-03-25 10:35:21 UTC
Last seen:2025-03-27 15:42:08 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'742 x AgentTesla, 19'607 x Formbook, 12'242 x SnakeKeylogger)
ssdeep 12288:HBKFuCbDU2kSD8265BK4Z3dGQxH+4m26K3hwFk6CK3/LNBugYZ19Ezq2h3nYUR3S:ADgSw1K4Vd/wP26K3hwF6W/nVG2Bn1
TLSH T111F4236EBFA49A16C2BD1F37D82355CC42F69802E021F37E11E86BE53DE9691C01AC57
TrID 69.7% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
10.0% (.EXE) Win64 Executable (generic) (10522/11/4)
6.2% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
4.2% (.EXE) Win32 Executable (generic) (4504/4/1)
1.9% (.EXE) Win16/32 Executable Delphi generic (2072/23)
Magika pebin
dhash icon 14f0ccced6cce971 (11 x SnakeKeylogger, 9 x Formbook, 5 x MassLogger)
Reporter threatcat_ch
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
2
# of downloads :
472
Origin country :
CH CH
Vendor Threat Intelligence
Detection(s):
SecuriteInfo.com.Win32.MalwareX-gen.16810.32529.UNOFFICIAL
Create hunting rule

Verdict:
Malicious
Score:
92.5%
Link:
https://cyber-fortress.com/docs/result/index.php?id=67e286f3acb044ea849eb146
Tags:
virus msil
Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Creating a window
Unauthorized injection to a recently created process
Restart of the analyzed sample
Creating a file
Сreating synchronization primitives
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
obfuscated obfuscated packed packed packer_detected
Link:
https://www.filescan.io/uploads/67e286eda08e28b31da86f78/reports/80bd3843-2098-4963-b821-3d7c0809ef5b/overview
Verdict:
Malicious
Labled as:
Genie.8DN.Generic
Link:
https://www.hybrid-analysis.com/sample/3f6f83bb975f8b3c8ad23b715569cb2ebac4cee81f88c80262f624cc59de4e0d
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:
Agent Tesla
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/86bd77c5-40d4-4fe8-b1f2-4e1382c07544
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1647910
Signature
.NET source code contains potential unpacker
.NET source code contains very large array initializations
Antivirus / Scanner detection for submitted sample
Found direct / indirect Syscall (likely to bypass EDR)
Initial sample is a PE file and has a suspicious name
Joe Sandbox ML detected suspicious sample
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
Performs DNS queries to domains with low reputation
Queues an APC in another process (thread injection)
Suricata IDS alerts for network traffic
Switches to a custom stack to bypass stack traces
Tries to harvest and steal browser information (history, passwords, etc)
Tries to steal Mail credentials (via file / registry access)
Yara detected AntiVM3
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1647910 Sample: Final bill of lading.exe Startdate: 25/03/2025 Architecture: WINDOWS Score: 100 30 www.noscn.xyz 2->30 32 www.streush.live 2->32 34 11 other IPs or domains 2->34 44 Suricata IDS alerts for network traffic 2->44 46 Antivirus / Scanner detection for submitted sample 2->46 48 Multi AV Scanner detection for submitted file 2->48 52 6 other signatures 2->52 10 Final bill of lading.exe 3 2->10         started        signatures3 50 Performs DNS queries to domains with low reputation 30->50 process4 file5 28 C:\Users\...\Final bill of lading.exe.log, ASCII 10->28 dropped 13 Final bill of lading.exe 10->13         started        process6 signatures7 64 Maps a DLL or memory area into another process 13->64 16 5dP3aNDjx.exe 13->16 injected process8 signatures9 42 Found direct / indirect Syscall (likely to bypass EDR) 16->42 19 Robocopy.exe 13 16->19         started        process10 signatures11 54 Tries to steal Mail credentials (via file / registry access) 19->54 56 Tries to harvest and steal browser information (history, passwords, etc) 19->56 58 Modifies the context of a thread in another process (thread injection) 19->58 60 3 other signatures 19->60 22 5dP3aNDjx.exe 19->22 injected 26 firefox.exe 19->26         started        process12 dnsIp13 36 www.streush.live 67.223.117.189, 49744, 49745, 49746 VIMRO-AS15189US United States 22->36 38 www.ekcastings.shop 91.189.114.19, 49732, 49733, 49734 RU-CENTERRU Russian Federation 22->38 40 8 other IPs or domains 22->40 62 Found direct / indirect Syscall (likely to bypass EDR) 22->62 signatures14
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/3f6f83bb975f8b3c8ad23b715569cb2ebac4cee81f88c80262f624cc59de4e0d
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/3f6f83bb975f8b3c8ad23b715569cb2ebac4cee81f88c80262f624cc59de4e0d/
Threat name:
ByteCode-MSIL.Backdoor.FormBook
Create hunting rule
Status:
Malicious
First seen:
2025-03-25 09:36:32 UTC
File Type:
PE (.Net Exe)
Extracted files:
1
AV detection:
26 of 36 (72.22%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=h5xyho4xl6ftzcwshnyvk2olf25mjtxid6emqatc6ysmywo6jygq._file
Verdict:
malicious
Label(s):
unc_loader_037
Create hunting rule
formbook
Create hunting rule
Similar samples:
error
Formbook
Result
Malware family:
n/a
Score:
  5/10
Tags:
discovery
Link:
https://tria.ge/reports/250325-mmvg7svtdy/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of WriteProcessMemory
System Location Discovery: System Language Discovery
Suspicious use of SetThreadContext
Verdict:
Malicious
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/4663dd1f-60bb-461e-aee6-b30181abffe1
Unpacked files
SH256 hash:
3f6f83bb975f8b3c8ad23b715569cb2ebac4cee81f88c80262f624cc59de4e0d
MD5 hash:
a76ac57c9cc52729718ea00787a5160d
SHA1 hash:
76b3ea8eb28e56a6948dde942acca625987e6a5c
Link:
https://www.unpac.me/results/7743ae8b-7b6e-41f7-b833-f9ecd0bc9b6c/
SH256 hash:
2b733e4781f203ff7d12d6d4e492da515365ee37dd8c5a8bfe230cf9faa4d006
MD5 hash:
faaa21f0e7167e5c345f6a39495e97c1
SHA1 hash:
3c204cac0330e08b9136c04a7feb53e7605c8023
Link:
https://www.unpac.me/results/7743ae8b-7b6e-41f7-b833-f9ecd0bc9b6c/
SH256 hash:
479b2b88236dc456b9c9dfcff8ee9e70c80d12c0f7b02b3090a9fe55f772b689
MD5 hash:
e3f6e491829c48e1ba0709f786109cef
SHA1 hash:
3e300dbb2a18a38cfcfdcdc2a71b47fada2b73a2
Link:
https://www.unpac.me/results/7743ae8b-7b6e-41f7-b833-f9ecd0bc9b6c/
SH256 hash:
75f420d7c1243f4b57f883ac8b9d7a6041b7b8ccced702e933e535a1c399a0fe
MD5 hash:
42046b477a5b4fbd008c8a947743ad14
SHA1 hash:
8107c36ec92a8aa02bd352d140903ed26209955d
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/7743ae8b-7b6e-41f7-b833-f9ecd0bc9b6c/
SH256 hash:
5e401f357925f6f124df7bcefac54596cb746d47da1017feba037e3aaf284572
MD5 hash:
36553e373ed8d5581b705cb7a4f8f637
SHA1 hash:
1159d45f290b266633c22cf28577fef579ef34c7
Link:
https://www.unpac.me/results/7743ae8b-7b6e-41f7-b833-f9ecd0bc9b6c/
Malware family:
FormBook
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/3f6f83bb975f/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/3f6f83bb975f8b3c8ad23b715569cb2ebac4cee81f88c80262f624cc59de4e0d

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: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
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 3f6f83bb975f8b3c8ad23b715569cb2ebac4cee81f88c80262f624cc59de4e0d

(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