MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 e4368355994cacf472d053ff31a672820b4a293b7f7cff9eb1347dbe5335c9d7. 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: 12


Intelligence 12 IOCs YARA 7 File information Comments 1
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: e4368355994cacf472d053ff31a672820b4a293b7f7cff9eb1347dbe5335c9d7
SHA3-384 hash: 7ae1014012eca93f45c1df0f1ce1ebc2b748affa526f58b80626a717d98f515808e938b80fde13598e2f93b7238fe63c
SHA1 hash: 1a834d12401aec960fa9300e825d4c0ba5c592b4
MD5 hash: b1136341dce035655548d5c78daca86e
humanhash: michigan-jersey-delaware-emma
File name:b1136341dce035655548d5c78daca86e
Download: download sample
Signature Formbook
Create hunting rule
File size:393'760 bytes
First seen:2022-07-08 15:10:10 UTC
Last seen:2022-07-15 03:42:39 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'652 x AgentTesla, 19'463 x Formbook, 12'204 x SnakeKeylogger)
ssdeep 6144:mCy67gA9zpr1v1NMNnQaypyCe8POwDgJl2741+1z:dyegMn1QQayPeTnl2741+1z
Threatray 1'622 similar samples on MalwareBazaar
TLSH T1C9846B8BB64C778ECA17C97179B44D346610AF6753178603B4C3EE6D8A6CA8E9F140F2
TrID 69.1% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
9.9% (.EXE) Win64 Executable (generic) (10523/12/4)
6.2% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
4.7% (.EXE) Win16 NE executable (generic) (5038/12/1)
4.2% (.EXE) Win32 Executable (generic) (4505/5/1)
File icon (PE):PE icon
dhash icon 6ccccc9cc4d8e8f4 (41 x Formbook, 34 x AgentTesla, 3 x AveMariaRAT)
Reporter zbetcheckin
Tags:32 exe FormBook

Intelligence

File Origin
# of uploads :
3
# of downloads :
324
Origin country :
n/a
Vendor Threat Intelligence
Detection(s):
SecuriteInfo.com.ArtemisB1136341DCE0.17621.21882.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Sending a custom TCP request
Launching a process
Creating a file
Сreating synchronization primitives
Launching cmd.exe command interpreter
Searching for synchronization primitives
Forced shutdown of a system process
Unauthorized injection to a system process
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
obfuscated overlay packed
Link:
https://www.filescan.io/uploads/62c8490c7808d6d68ecc1f0f/reports/4ad3fd79-0532-4e5d-afaa-d80310591258/overview
Result
Verdict:
UNKNOWN
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/6cadd0ec-8ce7-4695-ab4c-1b3dbdadd5e1
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1027382
Signature
.NET source code references suspicious native API functions
Allocates memory in foreign processes
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Contains functionality to check if a debugger is running (CheckRemoteDebuggerPresent)
Detected potential unwanted application
Icon mismatch, binary includes an icon from a different legit application in order to fool users
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
Modifies the context of a thread in another process (thread injection)
Multi AV Scanner detection for domain / URL
Multi AV Scanner detection for submitted file
Queues an APC in another process (thread injection)
Sample uses process hollowing technique
Tries to detect virtualization through RDTSC time measurements
Writes to foreign memory regions
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 659874 Sample: awtAAXWzgq Startdate: 08/07/2022 Architecture: WINDOWS Score: 100 32 Multi AV Scanner detection for domain / URL 2->32 34 Malicious sample detected (through community Yara rule) 2->34 36 Antivirus detection for URL or domain 2->36 38 7 other signatures 2->38 10 awtAAXWzgq.exe 1 2->10         started        process3 file4 30 C:\Users\user\AppData\...\awtAAXWzgq.exe.log, ASCII 10->30 dropped 46 Writes to foreign memory regions 10->46 48 Allocates memory in foreign processes 10->48 50 Injects a PE file into a foreign processes 10->50 52 Contains functionality to check if a debugger is running (CheckRemoteDebuggerPresent) 10->52 14 cvtres.exe 10->14         started        signatures5 process6 signatures7 54 Modifies the context of a thread in another process (thread injection) 14->54 56 Maps a DLL or memory area into another process 14->56 58 Sample uses process hollowing technique 14->58 60 2 other signatures 14->60 17 explorer.exe 14->17 injected process8 process9 19 WWAHost.exe 17->19         started        22 autoconv.exe 17->22         started        signatures10 40 Modifies the context of a thread in another process (thread injection) 19->40 42 Maps a DLL or memory area into another process 19->42 44 Tries to detect virtualization through RDTSC time measurements 19->44 24 cmd.exe 1 19->24         started        26 explorer.exe 2 161 19->26         started        process11 process12 28 conhost.exe 24->28         started       
Detection:
xloader
Create hunting rule
Link:
https://mwdb.cert.pl/sample/e4368355994cacf472d053ff31a672820b4a293b7f7cff9eb1347dbe5335c9d7/
Threat name:
ByteCode-MSIL.Trojan.FormBook
Create hunting rule
Status:
Malicious
First seen:
2022-07-08 07:17:20 UTC
File Type:
PE (.Net Exe)
Extracted files:
12
AV detection:
18 of 26 (69.23%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=4q3igvmzjswpi4wqkp7tdjtsqifuukj3p56p7hvrgr634uzvzhlq._file
Verdict:
malicious
Similar samples:
3c54c14e0046496faf7f519ac8c3085f8a7c7379c8040e47608f962534acddd0
Formbook
61a46630f2ccf11cb47c63037115fecc2b91219e60bc977843e0808b34970802
Formbook
7f3bc638d00a6b3fd61d768fd39047fc87b97942d809d16042770d42d0e0da24
Formbook
c901b6665268a9f5eeaa9e29c8fe5b9fbacbdce09be63191fc137ce573898fe7
Formbook
+ 1'612 additional samples on MalwareBazaar
Result
Malware family:
xloader
Create hunting rule
Score:
  10/10
Tags:
family:xloader campaign:mt88 loader persistence rat spyware stealer suricata
Link:
https://tria.ge/reports/220708-skk4mshee4/
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
System policy modification
Drops file in Program Files directory
Suspicious use of SetThreadContext
Reads user/profile data of web browsers
Adds policy Run key to start application
Xloader payload
Xloader
suricata: ET MALWARE FormBook CnC Checkin (GET)
Unpacked files
SH256 hash:
491b58cd14ab3e8d5c43f94a562342201d12c0ae0ef4900562525caf02342a3e
MD5 hash:
2940263c7ca3f82b3f9c7936b3128e58
SHA1 hash:
aa233f71dde2ca9030c4ab997245297c45f86fc5
Detections:
win_formbook_g0
Create hunting rule
win_formbook_auto
Create hunting rule
XLoader
Create hunting rule
Link:
https://www.unpac.me/results/978de3e6-86bf-4d80-b2cc-03c8ca9da117/
Parent samples :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 hash:
5196b076cc1dfda8cf93261e830f25066bfa194d96fa9573ce08ee67e3b18dd7
MD5 hash:
3f02cd0e0af833b145a6d17a74a3be5c
SHA1 hash:
4d93a2730542bb55ea91a8ec1ceeea0ee124a2a4
Link:
https://www.unpac.me/results/978de3e6-86bf-4d80-b2cc-03c8ca9da117/
SH256 hash:
e4368355994cacf472d053ff31a672820b4a293b7f7cff9eb1347dbe5335c9d7
MD5 hash:
b1136341dce035655548d5c78daca86e
SHA1 hash:
1a834d12401aec960fa9300e825d4c0ba5c592b4
Link:
https://www.unpac.me/results/978de3e6-86bf-4d80-b2cc-03c8ca9da117/
Malware family:
XLoader
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/e4368355994c/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Legit
Score:
0.00
Link:
https://yomi.yoroi.company/submissions/e4368355994cacf472d053ff31a672820b4a293b7f7cff9eb1347dbe5335c9d7

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:INDICATOR_EXE_Packed_ConfuserEx
Create hunting rule
Author:ditekSHen
Description:Detects executables packed with ConfuserEx Mod
Rule name:malware_Formbook_strings
Create hunting rule
Author:JPCERT/CC Incident Response Group
Description:detect Formbook in memory
Reference:internal research
Rule name:meth_get_eip
Create hunting rule
Author:Willi Ballenthin
Rule name:meth_stackstrings
Create hunting rule
Author:Willi Ballenthin
Rule name:pe_imphash
Create hunting rule
Rule name:Skystars_Malware_Imphash
Create hunting rule
Author:Skystars LightDefender
Description:imphash
Rule name:win_formbook_auto
Create hunting rule
Author:Felix Bilstein - yara-signator at cocacoding dot com
Description:Detects win.formbook.

File information

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

Web download

Formbook

Executable exe e4368355994cacf472d053ff31a672820b4a293b7f7cff9eb1347dbe5335c9d7

(this sample)

  
Delivery method
Distributed via web download
  
URLhaus
https://urlhaus.abuse.ch/url/2255409/

Comments


Avatar
zbet commented on 2022-07-08 15:10:19 UTC

url : hxxp://45.130.138.253/receipt_00123/vbc.exe