MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 542bdcf5489c24dec4384918656a4384a689b3b8b293a8e2493c4abbdc97e918. 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: 14


Intelligence 14 IOCs YARA 9 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 542bdcf5489c24dec4384918656a4384a689b3b8b293a8e2493c4abbdc97e918
SHA3-384 hash: 583b18dd29e857cc867e5c9b179e64f327c6eb10502a108b2e9770d382ee1baacbc6d3ed3cd3699e4666a5c9fed2f824
SHA1 hash: a1a0089a1de1458d2b31e34111111b11b9794ab7
MD5 hash: 41dcc5e269b859d2648e5b3b9dd61e8c
humanhash: leopard-ink-freddie-emma
File name:NHHYGGw.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:306'176 bytes
First seen:2023-01-17 19:52:50 UTC
Last seen:2023-01-17 21:35:03 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'666 x AgentTesla, 19'479 x Formbook, 12'209 x SnakeKeylogger)
ssdeep 6144:/SM/2tgmnl8bvW5e4sZU+HWqdnsqkXOXXc91av09hwOy3bny9:KM/2ymnlCObsqQk0XoFy3bny9
TLSH T18A54F18D759475DFCC1BC575CAE83C69B6A860BA630B4243D01319E8DE0D68BDF260F2
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) (4505/5/1)
2.0% (.ICL) Windows Icons Library (generic) (2059/9)
File icon (PE):PE icon
dhash icon 30b2c4c8c8c4b030 (53 x Formbook, 41 x RemcosRAT, 20 x AgentTesla)
Reporter Anonymous
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
2
# of downloads :
258
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
formbook
Create hunting rule
ID:
1
File name:
NHHYGGw.exe
Verdict:
Malicious activity
Analysis date:
2023-01-17 19:53:47 UTC
Tags:
stealer trojan formbook
Link:
https://app.any.run/tasks/5e04f23b-cc2f-4c41-a601-6cfd096f74ef

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/353929/
Detection(s):
SecuriteInfo.com.Trojan.Generic.33026319.24839.2678.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Launching a process
Creating a file
Сreating synchronization primitives
Searching for synchronization primitives
Sending a custom TCP request
DNS request
Sending an HTTP GET request
Reading critical registry keys
Creating a file in the %temp% directory
Unauthorized injection to a recently created process
Stealing user critical data
Unauthorized injection to a system process
Verdict:
No Threat
Threat level:
  2/10
Confidence:
67%
Tags:
obfuscated packed
Link:
https://www.filescan.io/uploads/63c6fc9ee40648ad3ece4632/reports/18498cd7-14f4-416f-8d0b-65134d672aa0/overview
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/f61938f3-f751-47dc-88ae-211dbc83ac94
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1153428
Signature
.NET source code contains potential unpacker
Allocates memory in foreign processes
Antivirus / Scanner detection for submitted sample
Antivirus detection for URL or domain
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
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)
Writes to foreign memory regions
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 786160 Sample: NHHYGGw.exe Startdate: 17/01/2023 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 5 other signatures 2->38 8 NHHYGGw.exe 1 2->8         started        process3 file4 22 C:\Users\user\AppData\...22HHYGGw.exe.log, CSV 8->22 dropped 48 Writes to foreign memory regions 8->48 50 Allocates memory in foreign processes 8->50 52 Injects a PE file into a foreign processes 8->52 12 cvtres.exe 8->12         started        signatures5 process6 signatures7 54 Modifies the context of a thread in another process (thread injection) 12->54 56 Maps a DLL or memory area into another process 12->56 58 Sample uses process hollowing technique 12->58 60 Queues an APC in another process (thread injection) 12->60 15 explorer.exe 3 6 12->15 injected process8 dnsIp9 24 www.northgateapartments.co.uk 185.151.30.186, 49702, 49703, 49704 TWENTYIGB United Kingdom 15->24 26 www.elite-travel-cn.com 107.149.40.247, 49717, 49718, 49719 PEGTECHINCUS United States 15->26 28 10 other IPs or domains 15->28 30 System process connects to network (likely due to code injection or exploit) 15->30 19 cscript.exe 13 15->19         started        signatures10 process11 signatures12 40 Tries to steal Mail credentials (via file / registry access) 19->40 42 Tries to harvest and steal browser information (history, passwords, etc) 19->42 44 Modifies the context of a thread in another process (thread injection) 19->44 46 Maps a DLL or memory area into another process 19->46
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/542bdcf5489c24dec4384918656a4384a689b3b8b293a8e2493c4abbdc97e918/
Threat name:
Win32.Trojan.Leonem
Create hunting rule
Status:
Malicious
First seen:
2023-01-16 00:48:03 UTC
File Type:
PE (.Net Exe)
Extracted files:
3
AV detection:
32 of 38 (84.21%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=kqv5z5kitqsn5rbyjemgk2sdqstitm5ywkj2rysjhrflxxex5ema._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Result
Malware family:
n/a
Score:
  8/10
Tags:
spyware stealer
Link:
https://tria.ge/reports/230117-ylyc9aeg59/
Behaviour
Suspicious use of WriteProcessMemory
Gathers network information
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 SetThreadContext
Loads dropped DLL
Reads user/profile data of web browsers
Blocklisted process makes network request
Unpacked files
SH256 hash:
4bc3750a4fe555f6d490086c7f53357a3fb287de9d97543ad6b96badabe85611
MD5 hash:
64a796cd1ef7b0a7d92eba65b5ce9504
SHA1 hash:
ad54734f7e38fac76614f26670d4560c77a63bca
Link:
https://www.unpac.me/results/8c2615cb-ea26-4e57-a8dc-4afca70980dc/
SH256 hash:
e7dc06b4600faf7d23015912b21ca4a863b8274fd35c58ae15fe508909308e79
MD5 hash:
788a9209e15c0f1bbdc1ca5d6a593451
SHA1 hash:
9f871e22ebc59ce9e3f78b4c20ae9c2f90024f55
Link:
https://www.unpac.me/results/8c2615cb-ea26-4e57-a8dc-4afca70980dc/
SH256 hash:
542bdcf5489c24dec4384918656a4384a689b3b8b293a8e2493c4abbdc97e918
MD5 hash:
41dcc5e269b859d2648e5b3b9dd61e8c
SHA1 hash:
a1a0089a1de1458d2b31e34111111b11b9794ab7
Link:
https://www.unpac.me/results/8c2615cb-ea26-4e57-a8dc-4afca70980dc/
Malware family:
XLoader
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/542bdcf5489c/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/542bdcf5489c24dec4384918656a4384a689b3b8b293a8e2493c4abbdc97e918

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:cobalt_strike_tmp01925d3f
Create hunting rule
Author:The DFIR Report
Description:files - file ~tmp01925d3f.exe
Reference:https://thedfirreport.com
Rule name:INDICATOR_EXE_Packed_ConfuserEx
Create hunting rule
Author:ditekSHen
Description:Detects executables packed with ConfuserEx Mod
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: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.

File information

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

Malspam

Formbook

Executable exe 542bdcf5489c24dec4384918656a4384a689b3b8b293a8e2493c4abbdc97e918

(this sample)

  
Dropped by
Formbook
  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/353929/

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