MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 40954a03ff9b5f841c40b1091fcea523c2ad99db64f20463a90ddd61e3ef38fe. 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: 11


Intelligence 11 IOCs YARA 4 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 40954a03ff9b5f841c40b1091fcea523c2ad99db64f20463a90ddd61e3ef38fe
SHA3-384 hash: e6826334c37331616f0c80044b8bbfe63d8902230800f7347f0258889eb04f45c270c504f66f077dd9a7fcd31e3d4661
SHA1 hash: bc0b420baf0f214ded7f5d9f9280535557d0e444
MD5 hash: d7483c4d727a821be6ddb83a83b09132
humanhash: cat-princess-tennis-spring
File name:Invoice.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:81'920 bytes
First seen:2023-08-21 07:26:14 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'666 x AgentTesla, 19'479 x Formbook, 12'209 x SnakeKeylogger)
ssdeep 1536:etRH5xBFeI6o545DT2BEWYzZG0Yw2cwwSgijBiDCSSwDTDCwtjw/8lUbeD/hwwQO:etRHDB4I6omzgrwopk
Threatray 3'795 similar samples on MalwareBazaar
TLSH T18E83F53C1A8A4AA7E6B941B9E5C1814EC7B1D63FE542EB4AFF4C4DA41F523F064062C7
TrID 60.4% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
10.8% (.SCR) Windows screen saver (13097/50/3)
8.7% (.EXE) Win64 Executable (generic) (10523/12/4)
5.4% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
4.1% (.EXE) Win16 NE executable (generic) (5038/12/1)
Reporter adrian__luca
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
1
# of downloads :
268
Origin country :
HU HU
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
Invoice.exe
Verdict:
Malicious activity
Analysis date:
2023-08-21 07:30:19 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/2c038dd2-97b2-42a3-a658-15a6ae95fdaf

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/443898/
Detection(s):
SecuriteInfo.com.Trojan.DownLoaderNET.729.6730.12919.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Сreating synchronization primitives
DNS request
Sending a custom TCP request
Sending an HTTP GET request
Gathering data
Verdict:
Malicious
Labled as:
IL:Trojan.MSILMamut
Link:
https://www.hybrid-analysis.com/sample/40954a03ff9b5f841c40b1091fcea523c2ad99db64f20463a90ddd61e3ef38fe
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/5079955c-62b8-4711-943a-f4592947d1c3
Result
Threat name:
n/a
Detection:
malicious
Classification:
spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1294336
Signature
.NET source code contains potential unpacker
Antivirus detection for URL or domain
Initial sample is a PE file and has a suspicious name
Injects a PE file into a foreign processes
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 has a suspicious name (potential lure to open the executable)
System process connects to network (likely due to code injection or exploit)
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 AntiVM3
Yara detected Costura Assembly Loader
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 1294336 Sample: Invoice.exe Startdate: 21/08/2023 Architecture: WINDOWS Score: 100 50 Malicious sample detected (through community Yara rule) 2->50 52 Antivirus detection for URL or domain 2->52 54 Multi AV Scanner detection for submitted file 2->54 56 6 other signatures 2->56 9 Invoice.exe 16 6 2->9         started        14 Qfnkvt.exe 14 6 2->14         started        16 Qfnkvt.exe 4 2->16         started        process3 dnsIp4 46 files.catbox.moe 108.181.20.35, 443, 49705, 49713 ASN852CA Canada 9->46 38 C:\Users\user\AppData\Roaming\Qfnkvt.exe, PE32 9->38 dropped 62 Writes to foreign memory regions 9->62 64 Injects a PE file into a foreign processes 9->64 18 MSBuild.exe 9->18         started        21 MSBuild.exe 9->21         started        66 Multi AV Scanner detection for dropped file 14->66 23 MSBuild.exe 14->23         started        25 MSBuild.exe 16->25         started        file5 signatures6 process7 signatures8 58 Maps a DLL or memory area into another process 18->58 60 Queues an APC in another process (thread injection) 18->60 27 lybDnykrQbVhLVIZvflXSGgISuT.exe 18->27 injected process9 process10 29 cmstp.exe 13 27->29         started        signatures11 68 Tries to steal Mail credentials (via file / registry access) 29->68 70 Tries to harvest and steal browser information (history, passwords, etc) 29->70 72 Modifies the context of a thread in another process (thread injection) 29->72 74 Maps a DLL or memory area into another process 29->74 32 explorer.exe 29->32 injected 36 lybDnykrQbVhLVIZvflXSGgISuT.exe 29->36 injected process12 dnsIp13 40 nasyoeastasia.org 192.185.129.44, 49744, 49745, 49746 UNIFIEDLAYER-AS-1US United States 32->40 42 wrautomotive.online 37.97.254.27, 49739, 49740, 49741 TRANSIP-ASAmsterdamtheNetherlandsNL Netherlands 32->42 44 10 other IPs or domains 32->44 48 System process connects to network (likely due to code injection or exploit) 32->48 signatures14
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/40954a03ff9b5f841c40b1091fcea523c2ad99db64f20463a90ddd61e3ef38fe/
Threat name:
ByteCode-MSIL.Trojan.Leonem
Create hunting rule
Status:
Malicious
First seen:
2023-08-17 10:37:21 UTC
File Type:
PE (.Net Exe)
Extracted files:
4
AV detection:
16 of 24 (66.67%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=ickuua77tnpyihcaweer7tvfepbk3go3mtzaiy5jbxowdy7phd7a._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Similar samples:
0f0760eb43d1a3ed16b4842b25674e4d6d1239766243bac1d4c19341bb37d5b8
Formbook
211809c137b352584707b7d3b254df7e9b80302615f758ff8060b535d8804945
Formbook
23af16d3c63373e2e6789381782572f3b0d17fe7587f243a100c6123ea1e3020
Formbook
29f5a8629986da0b4a353e5423fb39c505cba7c06e7aa4b5a4029c5a1669ae95
Formbook
31aa8ca9f4fcb46b8028c97aeae2b7d7285f27f8240c0ad5f3e0f08282c8a3b2
Formbook
62600a3d570dd2096f9eb8bb18b7d4b4844e9c603182529dadad8831f8a067a7
Formbook
6cad63187657e8cf245910096f37936a9d749ad8c7747e078c636fdd3b63cef3
Formbook
988076bd6d29e4027272a15de5c11337648d458b3384554328ed317f55dec1aa
Formbook
bd213bacf745262d609025230b73d653d2ef62875f28860ea1b4d1a65f5c5cca
Formbook
+ 3'785 additional samples on MalwareBazaar
Result
Malware family:
n/a
Score:
  6/10
Tags:
persistence
Link:
https://tria.ge/reports/230821-h94beadd2x/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Suspicious use of SetThreadContext
Adds Run key to start application
Unpacked files
SH256 hash:
40954a03ff9b5f841c40b1091fcea523c2ad99db64f20463a90ddd61e3ef38fe
MD5 hash:
d7483c4d727a821be6ddb83a83b09132
SHA1 hash:
bc0b420baf0f214ded7f5d9f9280535557d0e444
Link:
https://www.unpac.me/results/43159238-16c1-4523-b763-adfd88eef069/
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/40954a03ff9b/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Suspicious File
Score:
0.55
Link:
https://yomi.yoroi.company/submissions/40954a03ff9b5f841c40b1091fcea523c2ad99db64f20463a90ddd61e3ef38fe

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:NETexecutableMicrosoft
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 40954a03ff9b5f841c40b1091fcea523c2ad99db64f20463a90ddd61e3ef38fe

(this sample)

  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/443898/

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