MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 925fa037b496ed141df2f58ee1eddac36a26a9ec3bf6888c7e4066764fa0f51c. 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: 18


Intelligence 18 IOCs YARA 4 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 925fa037b496ed141df2f58ee1eddac36a26a9ec3bf6888c7e4066764fa0f51c
SHA3-384 hash: fa78e574fbf77ceab5d36514061eea849f8ef4f1f5a837c6cbd187aa1a303b7ee8f76673d24b62583d7638deecd7e7c6
SHA1 hash: 4ec0df47b27b3ce735af2047a69ab815420692fb
MD5 hash: 5da8f92e673f33c5af690fe485f21565
humanhash: maine-maine-saturn-cola
File name:5da8f92e673f33c5af690fe485f21565.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:670'208 bytes
First seen:2023-11-10 07:42:45 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'740 x AgentTesla, 19'599 x Formbook, 12'241 x SnakeKeylogger)
ssdeep 12288:M8YHpFLxSOtQOctlTwnwet4mogdJiLeTV4kCOCgaBfa:XYHPFk8wsuaimV9haB
TLSH T11DE45A3D5AAD123BC1BADFB58FC58427F1D0A9AB7051AD79A4D703A64302E56F4C023E
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)
Reporter abuse_ch
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
1
# of downloads :
257
Origin country :
NL NL
Vendor Threat Intelligence
Malware family:
formbook
Create hunting rule
ID:
1
File name:
http://103.29.3.200/W0811T/wininit.exe
Verdict:
Malicious activity
Analysis date:
2023-11-10 07:38:40 UTC
Tags:
formbook xloader trojan
Link:
https://app.any.run/tasks/c8d9ceab-1248-45bb-9dfb-d8a4b1266bfb

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection(s):
SecuriteInfo.com.Trojan.Inject4.59820.10377.16147.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Sending a custom TCP request
Сreating synchronization primitives
Creating a file in the %AppData% directory
Enabling the 'hidden' option for recently created files
Adding an access-denied ACE
Creating a process with a hidden window
Creating a file in the %temp% directory
Launching a process
Unauthorized injection to a recently created process
Restart of the analyzed sample
Creating a file
Using the Windows Management Instrumentation requests
Adding an exclusion to Microsoft Defender
Enabling autorun by creating a file
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
packed
Link:
https://www.filescan.io/uploads/654ddf14641154c7e3f14399/reports/3245262e-7e56-4437-a5d5-15dd3c41e8b2/overview
Verdict:
Malicious
Labled as:
Malware
Link:
https://www.hybrid-analysis.com/sample/925fa037b496ed141df2f58ee1eddac36a26a9ec3bf6888c7e4066764fa0f51c
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/fe8593c1-5994-4439-b40e-557e9082e94f
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1340358
Signature
.NET source code contains potential unpacker
.NET source code contains very large strings
Adds a directory exclusion to Windows Defender
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Detected FormBook malware
Found malware configuration
Injects a PE file into a foreign processes
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)
Modifies the prolog of user mode functions (user mode inline hooks)
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
Sigma detected: Scheduled temp file as task from temp location
Sigma detected: Steal Google chrome login data
Snort IDS alert for network traffic
System process connects to network (likely due to code injection or exploit)
Tries to detect virtualization through RDTSC time measurements
Tries to harvest and steal browser information (history, passwords, etc)
Tries to steal Mail credentials (via file / registry access)
Uses netstat to query active network connections and open ports
Uses schtasks.exe or at.exe to add and modify task schedules
Writes to foreign memory regions
Yara detected AntiVM3
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1340358 Sample: OhKvz8IfyV.exe Startdate: 10/11/2023 Architecture: WINDOWS Score: 100 72 www.souqshopper.com 2->72 74 www.nudtnrg.com 2->74 76 11 other IPs or domains 2->76 92 Snort IDS alert for network traffic 2->92 94 Found malware configuration 2->94 96 Malicious sample detected (through community Yara rule) 2->96 98 11 other signatures 2->98 11 OhKvz8IfyV.exe 7 2->11         started        15 FhzVCkERH.exe 5 2->15         started        signatures3 process4 file5 62 C:\Users\user\AppData\Roaming\FhzVCkERH.exe, PE32 11->62 dropped 64 C:\Users\user\AppData\Local\...\tmp3547.tmp, XML 11->64 dropped 110 Uses schtasks.exe or at.exe to add and modify task schedules 11->110 112 Adds a directory exclusion to Windows Defender 11->112 114 Tries to detect virtualization through RDTSC time measurements 11->114 17 OhKvz8IfyV.exe 11->17         started        20 powershell.exe 21 11->20         started        22 schtasks.exe 1 11->22         started        116 Multi AV Scanner detection for dropped file 15->116 118 Machine Learning detection for dropped file 15->118 120 Injects a PE file into a foreign processes 15->120 24 FhzVCkERH.exe 15->24         started        26 schtasks.exe 1 15->26         started        28 FhzVCkERH.exe 15->28         started        30 FhzVCkERH.exe 15->30         started        signatures6 process7 signatures8 78 Modifies the context of a thread in another process (thread injection) 17->78 80 Maps a DLL or memory area into another process 17->80 82 Sample uses process hollowing technique 17->82 84 Queues an APC in another process (thread injection) 17->84 32 explorer.exe 10 1 17->32 injected 36 conhost.exe 20->36         started        38 conhost.exe 22->38         started        40 conhost.exe 26->40         started        process9 dnsIp10 66 affibook.com 89.117.139.219, 49717, 49718, 80 LRTC-ASLT Lithuania 32->66 68 www.annuaire-brocante.com 144.168.71.135, 49724, 49725, 80 ESITEDUS United States 32->68 70 4 other IPs or domains 32->70 86 System process connects to network (likely due to code injection or exploit) 32->86 88 Uses netstat to query active network connections and open ports 32->88 42 WWAHost.exe 18 32->42         started        46 NETSTAT.EXE 32->46         started        signatures11 process12 file13 58 C:\Users\user\AppData\...\853logrv.ini, data 42->58 dropped 60 C:\Users\user\AppData\...\853logri.ini, data 42->60 dropped 100 Detected FormBook malware 42->100 102 Tries to steal Mail credentials (via file / registry access) 42->102 104 Tries to harvest and steal browser information (history, passwords, etc) 42->104 108 4 other signatures 42->108 48 cmd.exe 42->48         started        52 firefox.exe 42->52         started        106 Tries to detect virtualization through RDTSC time measurements 46->106 signatures14 process15 file16 56 C:\Users\user\AppData\Local\Temp\DB1, SQLite 48->56 dropped 90 Tries to harvest and steal browser information (history, passwords, etc) 48->90 54 conhost.exe 48->54         started        signatures17 process18
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/925fa037b496ed141df2f58ee1eddac36a26a9ec3bf6888c7e4066764fa0f51c
Detection:
formbook
Create hunting rule
Link:
https://mwdb.cert.pl/sample/925fa037b496ed141df2f58ee1eddac36a26a9ec3bf6888c7e4066764fa0f51c/
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
Create hunting rule
Status:
Malicious
First seen:
2023-11-09 19:21:32 UTC
File Type:
PE (.Net Exe)
Extracted files:
13
AV detection:
19 of 24 (79.17%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=sjp2an5us3wrihps6whod3o2ynvcnkpmhp3irdd6ibthmt5a6uoa._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Result
Malware family:
formbook
Create hunting rule
Score:
  10/10
Tags:
family:formbook campaign:bp31 rat spyware stealer trojan
Link:
https://tria.ge/reports/231110-jkahgafc38/
Behaviour
Creates scheduled task(s)
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Suspicious use of SetThreadContext
Checks computer location settings
Formbook payload
Formbook
Unpacked files
SH256 hash:
0a7ae1e6fc0e7070ebe1dbc0be54ab53467aec2dbf296ac4ebc2fb67506ec480
MD5 hash:
137eea57bcd5901a284aa70da60a4f14
SHA1 hash:
d58ed42e28a1752c6fb789686ab3f63cbc5ed694
Detections:
FormBook
Create hunting rule
win_formbook_w0
Create hunting rule
win_formbook_auto
Create hunting rule
win_formbook_g0
Create hunting rule
Link:
https://www.unpac.me/results/2aa5e897-8b27-4f9b-a3d8-a264025ee46e/
Parent samples :
f26ef2dc3870b6ee2f05973fcd97b1e55f817524eac8bdbe6863e584c6cf2821
925fa037b496ed141df2f58ee1eddac36a26a9ec3bf6888c7e4066764fa0f51c
29b83b860f2b115aaceaf7e5a5532c24d736392e34a5eaef229f39a0ba7bb983
SH256 hash:
d01f3dea3851602ba5a0586c60430d286adf6fcc7e17aab080601a66630606e5
MD5 hash:
579197d4f760148a9482d1ebde113259
SHA1 hash:
cf6924eb360c7e5a117323bebcb6ee02d2aec86d
Link:
https://www.unpac.me/results/2aa5e897-8b27-4f9b-a3d8-a264025ee46e/
SH256 hash:
9d0aedb2d34c43be96ba55d7d97bce8e0f7d3cccaabfde3f6cd934bfbad0df54
MD5 hash:
aa2a469278373474b63f5bd25504b76f
SHA1 hash:
880847a3daa0a8c06be40de45b6c5b66c6d44974
Link:
https://www.unpac.me/results/2aa5e897-8b27-4f9b-a3d8-a264025ee46e/
SH256 hash:
bfef9eac82e53e8d63bcb3b3022880eaf8f22cbbc6c69f3782b59c438f649f12
MD5 hash:
ddf81912128dd196140e9be656c3a212
SHA1 hash:
51221baf7115f7f2de03cd00b8b25cfde9241a35
Link:
https://www.unpac.me/results/2aa5e897-8b27-4f9b-a3d8-a264025ee46e/
SH256 hash:
925fa037b496ed141df2f58ee1eddac36a26a9ec3bf6888c7e4066764fa0f51c
MD5 hash:
5da8f92e673f33c5af690fe485f21565
SHA1 hash:
4ec0df47b27b3ce735af2047a69ab815420692fb
Link:
https://www.unpac.me/results/2aa5e897-8b27-4f9b-a3d8-a264025ee46e/
Malware family:
FormBook
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/925fa037b496/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Formbook
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/925fa037b496ed141df2f58ee1eddac36a26a9ec3bf6888c7e4066764fa0f51c

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:AgentTesla_DIFF_Common_Strings_01
Create hunting rule
Author:schmidtsz
Description:Identify partial Agent Tesla strings
Rule name:NET
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.

Web download

Formbook

Executable exe 925fa037b496ed141df2f58ee1eddac36a26a9ec3bf6888c7e4066764fa0f51c

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/2729140/
  
Delivery method
Distributed via web download

Comments