MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 8a553b6a9ee5177e24eee3b0af2bf0dd813e1daf2ce6d3a90294f815606bc62e. 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 4 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 8a553b6a9ee5177e24eee3b0af2bf0dd813e1daf2ce6d3a90294f815606bc62e
SHA3-384 hash: 6d78d1f796ed6d051145d2d88be398f9de3615e183089e65c9d28d63a9908470cdd241da98460605f3d257e591dccd2d
SHA1 hash: 1e815508309fcf2a5c9564b182de395d9887333d
MD5 hash: f34cb3d6dcf844531977dc3ccc2a7608
humanhash: nineteen-december-rugby-neptune
File name:img664947593034645.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:73'024 bytes
First seen:2022-11-02 03:18:04 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'649 x AgentTesla, 19'452 x Formbook, 12'201 x SnakeKeylogger)
ssdeep 1536:lLnZoM+D6HWkpmSluhfN9XP/lF6k6/TyjKixPd:vr+D6H9m0uxXP/lF6k6/TyOA
Threatray 3'139 similar samples on MalwareBazaar
TLSH T17C633F9D766071DFC85BC872CEA95C64EA6074BB930BC203A05326AD9D4D99BCF190F3
TrID 72.5% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
10.4% (.EXE) Win64 Executable (generic) (10523/12/4)
6.5% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
4.4% (.EXE) Win32 Executable (generic) (4505/5/1)
2.0% (.EXE) OS/2 Executable (generic) (2029/13)
File icon (PE):PE icon
dhash icon d2e8ecb2b2a2b282 (106 x AgentTesla, 106 x Formbook, 24 x RedLineStealer)
Reporter GovCERT_CH
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
1
# of downloads :
368
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
formbook
Create hunting rule
ID:
1
File name:
img664947593034645.exe
Verdict:
Malicious activity
Analysis date:
2022-11-02 03:19:48 UTC
Tags:
formbook trojan stealer
Link:
https://app.any.run/tasks/d9559520-d3c8-4b07-badd-6a2504647e57

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/326942/
Detection(s):
SecuriteInfo.com.UntrustedCertificate.Aichost.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Сreating synchronization primitives
DNS request
Sending an HTTP GET request
Sending a custom TCP request
Launching a process
Creating a file
Reading critical registry keys
Creating a file in the %temp% directory
Searching for synchronization primitives
Unauthorized injection to a recently created process
Query of malicious DNS domain
Sending a TCP request to an infection source
Stealing user critical data
Unauthorized injection to a system process
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
obfuscated overlay packed packed
Link:
https://www.filescan.io/uploads/6361e1a6791bb7e48afe05f0/reports/d81317a3-8dc8-45c2-827e-04ee95bf438c/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.
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/78c5d20b-1bb9-4a1a-bbac-77e5d70e1684
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1102928
Signature
.NET source code contains potential unpacker
Allocates memory in foreign processes
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
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
Performs DNS queries to domains with low reputation
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)
Writes to foreign memory regions
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 735589 Sample: img664947593034645.exe Startdate: 02/11/2022 Architecture: WINDOWS Score: 100 29 www.apletry.xyz 2->29 41 Snort IDS alert for network traffic 2->41 43 Multi AV Scanner detection for domain / URL 2->43 45 Malicious sample detected (through community Yara rule) 2->45 47 7 other signatures 2->47 9 img664947593034645.exe 15 3 2->9         started        signatures3 process4 dnsIp5 39 tgc8x.tk 50.115.174.192, 443, 49701, 49702 VIRPUS United States 9->39 27 C:\Users\user\...\img664947593034645.exe.log, CSV 9->27 dropped 61 Writes to foreign memory regions 9->61 63 Allocates memory in foreign processes 9->63 65 Injects a PE file into a foreign processes 9->65 14 CasPol.exe 9->14         started        17 CasPol.exe 9->17         started        file6 signatures7 process8 signatures9 67 Modifies the context of a thread in another process (thread injection) 14->67 69 Maps a DLL or memory area into another process 14->69 71 Sample uses process hollowing technique 14->71 73 Queues an APC in another process (thread injection) 14->73 19 explorer.exe 14->19 injected process10 dnsIp11 31 www.escraptor.com 154.210.23.25, 49709, 49710, 49711 VPSQUANUS Seychelles 19->31 33 www.availablesniumeans.com 76.164.199.117, 49722, 80 VERSAWEB-ASNUS United States 19->33 35 11 other IPs or domains 19->35 49 System process connects to network (likely due to code injection or exploit) 19->49 51 Performs DNS queries to domains with low reputation 19->51 23 rundll32.exe 13 19->23         started        signatures12 process13 dnsIp14 37 www.availablesniumeans.com 23->37 53 System process connects to network (likely due to code injection or exploit) 23->53 55 Tries to steal Mail credentials (via file / registry access) 23->55 57 Tries to harvest and steal browser information (history, passwords, etc) 23->57 59 2 other signatures 23->59 signatures15
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/8a553b6a9ee5177e24eee3b0af2bf0dd813e1daf2ce6d3a90294f815606bc62e/
Threat name:
Win32.Trojan.Leonem
Create hunting rule
Status:
Malicious
First seen:
2022-11-01 07:54:55 UTC
File Type:
PE (.Net Exe)
Extracted files:
4
AV detection:
19 of 26 (73.08%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=rjktw2u64ulx4jho4oyk6k7q3wat4hnpfttnhkicst4bkydlyyxa._file
Verdict:
malicious
Similar samples:
61a46630f2ccf11cb47c63037115fecc2b91219e60bc977843e0808b34970802
Formbook
6d2a192146876a4cbd53960fa55a8fe002e2280ef94642f880980dcb9eb7f5b4
Formbook
9fad67110bdcacafd444911b652eaa4730b4fa537f4f5de14fc73ffcadeae023
Formbook
b52602e4a3c6f3b8e0921d70e7a7a3ab45f045e0753ac1738ab9841fdba0f16a
Formbook
bbb16ff7e472adf4acdcf9576a2977b930f36622848b2f0c3e954f6916a273c9
Formbook
f41437ca03cac6a40974f48ba8b8b38856f9f6de955f7514b3e18471ed73789f
Formbook
f814605c9b01e689963ae60495815bae983b3e5dbe3d4209eef6e1b701d3c030
Formbook
+ 3'129 additional samples on MalwareBazaar
Result
Malware family:
formbook
Create hunting rule
Score:
  10/10
Tags:
family:formbook campaign:s5zx rat spyware stealer trojan
Link:
https://tria.ge/reports/221102-dt6pdaghe6/
Behaviour
Modifies Internet Explorer settings
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Program crash
Suspicious use of SetThreadContext
Formbook
Verdict:
Suspicious
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/83d514af-75cc-4142-9efc-f1e9f77c7e46
Unpacked files
SH256 hash:
f589989da69eada8f8a7a68d4c1f7b320fd4a9c9d6fea3e02ada55815edb2f83
MD5 hash:
28b8a0fd18d22ff374d429677ba11f75
SHA1 hash:
04674187aeb5425562b91b5e57dfedb07b370427
Link:
https://www.unpac.me/results/8faf01d2-3440-4ede-95cb-50dcf89cc811/
SH256 hash:
8a553b6a9ee5177e24eee3b0af2bf0dd813e1daf2ce6d3a90294f815606bc62e
MD5 hash:
f34cb3d6dcf844531977dc3ccc2a7608
SHA1 hash:
1e815508309fcf2a5c9564b182de395d9887333d
Link:
https://www.unpac.me/results/8faf01d2-3440-4ede-95cb-50dcf89cc811/
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/8a553b6a9ee5177e24eee3b0af2bf0dd813e1daf2ce6d3a90294f815606bc62e

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: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 8a553b6a9ee5177e24eee3b0af2bf0dd813e1daf2ce6d3a90294f815606bc62e

(this sample)

  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/326942/

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