MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 83e90e75eb49fccf0f69331483311ce57f89b33824fbec54e773af910da239a8. 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: 17


Intelligence 17 IOCs YARA 7 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 83e90e75eb49fccf0f69331483311ce57f89b33824fbec54e773af910da239a8
SHA3-384 hash: 7571f88c428b31343bd9b49ff2ab88622c7b0dcef123d8e266b68b370f01fd56297fff2b8cf122b3ff4a64379e454bf3
SHA1 hash: 144ce69deaa6b2ca6ba42a79572920da3210fb67
MD5 hash: ed31d2447e28d7eadff8268b644e179d
humanhash: magnesium-artist-bravo-mountain
File name:DETAILS AND INVOICES 6 PAGES .exe
Download: download sample
Signature Formbook
Create hunting rule
File size:302'833 bytes
First seen:2023-02-17 13:25:18 UTC
Last seen:2023-02-17 14:42:53 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash 61259b55b8912888e90f516ca08dc514 (1'059 x Formbook, 741 x AgentTesla, 427 x GuLoader)
ssdeep 6144:/Ya6S97P/PtfsO2ye3+cDNjriaY92Tsk66wt6wCpYzWvPIUTUnL:/Y0t1+V+chZYgTs4/YKSL
Threatray 1'274 similar samples on MalwareBazaar
TLSH T1F05413192AB0C19BECB3D7331E7827622EF9A12539E7D75B13E0191C7CA2950952FF60
TrID 47.3% (.EXE) Win32 Executable MS Visual C++ (generic) (31206/45/13)
15.9% (.EXE) Win64 Executable (generic) (10523/12/4)
9.9% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
7.6% (.EXE) Win16 NE executable (generic) (5038/12/1)
6.8% (.EXE) Win32 Executable (generic) (4505/5/1)
File icon (PE):PE icon
dhash icon b2a89c96a2cada72 (2'283 x Formbook, 981 x Loki, 803 x AgentTesla)
Reporter notajungman
Tags:exe FormBook


Avatar
notajungman
inside rar

Intelligence

File Origin
# of uploads :
2
# of downloads :
199
Origin country :
US US
Vendor Threat Intelligence
Malware family:
formbook
Create hunting rule
ID:
1
File name:
DETAILS AND INVOICES 6 PAGES .exe
Verdict:
Malicious activity
Analysis date:
2023-02-17 13:28:21 UTC
Tags:
trojan formbook stealer
Link:
https://app.any.run/tasks/ac40b11f-7d5c-4573-9a66-5315ab2d5bc2

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
Formbook
Create hunting rule
Link:
https://www.capesandbox.com/analysis/367678/
Detection(s):
SecuriteInfo.com.Trojan.NSISX.Spy.Gen.24.31243.25984.UNOFFICIAL
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Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a file in the %temp% directory
Creating a window
Creating a process from a recently created file
Сreating synchronization primitives
Sending a custom TCP request
Launching a process
Searching for synchronization primitives
DNS request
Sending an HTTP GET request
Reading critical registry keys
Unauthorized injection to a recently created process
Launching the default Windows debugger (dwwin.exe)
Unauthorized injection to a recently created process by context flags manipulation
Stealing user critical data
Unauthorized injection to a system process
Result
Malware family:
n/a
Score:
  5/10
Tags:
n/a
Link:
https://dragonfly.certego.net/analysis/71286/overview
Behaviour
MalwareBazaar
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
overlay packed shell32.dll
Link:
https://www.filescan.io/uploads/63ef806c87510c38b73538f3/reports/38caa362-1e16-4308-a48a-40c1e35b0658/overview
Verdict:
Malicious
Labled as:
Win/malicious_confidence_100%
Link:
https://www.hybrid-analysis.com/sample/83e90e75eb49fccf0f69331483311ce57f89b33824fbec54e773af910da239a8
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
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Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/a0e3b78b-7652-43d6-a007-5a06847ee6b9
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1177954
Signature
Antivirus detection for URL or domain
Executable has a suspicious name (potential lure to open the executable)
Found evasive API chain (may stop execution after reading information in the PEB, e.g. number of processors)
Initial sample is a PE file and has a suspicious name
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
Snort IDS alert for network traffic
System process connects to network (likely due to code injection or exploit)
Tries to harvest and steal browser information (history, passwords, etc)
Tries to steal Mail credentials (via file / registry access)
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 810776 Sample: DETAILS AND INVOICES 6 PAGE... Startdate: 17/02/2023 Architecture: WINDOWS Score: 100 33 Snort IDS alert for network traffic 2->33 35 Malicious sample detected (through community Yara rule) 2->35 37 Antivirus detection for URL or domain 2->37 39 5 other signatures 2->39 9 DETAILS AND INVOICES 6 PAGES  .exe 19 2->9         started        process3 file4 25 C:\Users\user\AppData\Local\Temp\lrzio.exe, PE32 9->25 dropped 12 lrzio.exe 9->12         started        process5 signatures6 51 Multi AV Scanner detection for dropped file 12->51 53 Machine Learning detection for dropped file 12->53 55 Found evasive API chain (may stop execution after reading information in the PEB, e.g. number of processors) 12->55 57 Maps a DLL or memory area into another process 12->57 15 lrzio.exe 12->15         started        process7 signatures8 59 Modifies the context of a thread in another process (thread injection) 15->59 61 Maps a DLL or memory area into another process 15->61 63 Sample uses process hollowing technique 15->63 65 Queues an APC in another process (thread injection) 15->65 18 explorer.exe 1 15->18 injected process9 dnsIp10 27 galithasak.com 192.185.48.232, 49685, 80 UNIFIEDLAYER-AS-1US United States 18->27 29 www.kokororo.tech 157.112.152.47, 49686, 49687, 80 SAKURA-CSAKURAInternetIncJP Japan 18->29 31 11 other IPs or domains 18->31 41 System process connects to network (likely due to code injection or exploit) 18->41 22 svchost.exe 13 18->22         started        signatures11 process12 signatures13 43 Tries to steal Mail credentials (via file / registry access) 22->43 45 Tries to harvest and steal browser information (history, passwords, etc) 22->45 47 Modifies the context of a thread in another process (thread injection) 22->47 49 Maps a DLL or memory area into another process 22->49
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/83e90e75eb49fccf0f69331483311ce57f89b33824fbec54e773af910da239a8/
Threat name:
Win32.Trojan.Leonem
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Status:
Malicious
First seen:
2023-02-17 08:42:47 UTC
File Type:
PE (Exe)
Extracted files:
4
AV detection:
19 of 25 (76.00%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=qpuq45pljh6m6d3jgmkigmi44v7ytmzyet56yvhhooxzcdnchgua._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Similar samples:
128505a47c9f43ff7ee232ae8e617756b0fc1bef2548dd893245514008dfbe58
Formbook
3a83557cf45393e6008e0a885f79cb7f904f31d8cde2d42c227c1ce41e28b832
Formbook
bbce488ca134416b61010d40ba42d0c867493d6785bffa25c5e7568e3eeacb7c
Formbook
bee95f90676280bca3212cc77b2dbd497f590cd560ce3005f2998fa324698427
Formbook
cef638f9ba310dfd22719a682dfe6ad1a07c06b122b54127e2a6257e9acc7752
Formbook
d004812639335fc21774851e271241aaead5918a69f978e1aedb6b573b6cca1b
Formbook
d036c4b1a4ff6265030084d453558c56f6a2d19b5a6af25943c47bc96895891c
Formbook
ddaf734203775ba854a597b395d5bbea5140b877727aac7c4f0120ec8de793b2
Formbook
f3197cca74f60c552d9d3b4d04d99996ceca8c8dc6ad845a468c10c65062a0fc
Formbook
+ 1'264 additional samples on MalwareBazaar
Result
Malware family:
n/a
Score:
  8/10
Tags:
n/a
Link:
https://tria.ge/reports/230217-qphszafa91/
Behaviour
Modifies Internet Explorer settings
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of FindShellTrayWindow
Suspicious use of SendNotifyMessage
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Program crash
Suspicious use of SetThreadContext
Checks computer location settings
Executes dropped EXE
Loads dropped DLL
Blocklisted process makes network request
Unpacked files
SH256 hash:
88752db60f3b813e00cc47a56fcad19982e182f8166abc888e2c5e4949895c4c
MD5 hash:
1f945061036442ac8583bb4f4b6ca851
SHA1 hash:
f3f6ff4e319567e086c6cb4f54cfa184fddd6cad
Detections:
win_formbook_w0
Create hunting rule
win_formbook_auto
Create hunting rule
win_formbook_g0
Create hunting rule
Link:
https://www.unpac.me/results/971a24aa-dad6-48e3-b61b-36ad270f9a7a/
SH256 hash:
4b3bddd49283e28bb33c179a1b48798b697101a4ebbd2f52e7222137246ba326
MD5 hash:
740a6ed62dda8ecaec55362a5bf656b1
SHA1 hash:
3b9bf6e2745b1a919a03b4cc9a0ff6da326a653b
Link:
https://www.unpac.me/results/971a24aa-dad6-48e3-b61b-36ad270f9a7a/
SH256 hash:
c5c1c3a82843fff120055d78b1376eb29c186fbc7cc3ae44afcd1e84aa01e441
MD5 hash:
064a729c3941cf1eda5014a0ea6e563a
SHA1 hash:
dae7d259e8fe19d0b466f799b6ee0c9f7df7ec74
Link:
https://www.unpac.me/results/971a24aa-dad6-48e3-b61b-36ad270f9a7a/
SH256 hash:
83e90e75eb49fccf0f69331483311ce57f89b33824fbec54e773af910da239a8
MD5 hash:
ed31d2447e28d7eadff8268b644e179d
SHA1 hash:
144ce69deaa6b2ca6ba42a79572920da3210fb67
Link:
https://www.unpac.me/results/971a24aa-dad6-48e3-b61b-36ad270f9a7a/
Malware family:
XLoader
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/83e90e75eb49/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/83e90e75eb49fccf0f69331483311ce57f89b33824fbec54e773af910da239a8

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:meth_get_eip
Create hunting rule
Author:Willi Ballenthin
Rule name:meth_stackstrings
Create hunting rule
Author:Willi Ballenthin
Rule name:shellcode
Create hunting rule
Author:nex
Description:Matched shellcode byte patterns
Rule name:Windows_Trojan_Formbook
Create hunting rule
Author:@malgamy12
Rule name:Windows_Trojan_Formbook_1112e116
Create hunting rule
Author:Elastic Security
Rule name:win_formbook_auto
Create hunting rule
Author:Felix Bilstein - yara-signator at cocacoding dot com
Description:Detects win.formbook.
Rule name:win_formbook_w0
Create hunting rule
Author:@malgamy12

File information

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

Malspam

Formbook

Executable exe 83e90e75eb49fccf0f69331483311ce57f89b33824fbec54e773af910da239a8

(this sample)

  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/367678/

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