MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 d58c6fee983f0750aff8aa614888ea36c5955f87f88010fc506dbe93daf736e2. 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: 16


Intelligence 16 IOCs YARA 17 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: d58c6fee983f0750aff8aa614888ea36c5955f87f88010fc506dbe93daf736e2
SHA3-384 hash: eb34789e1192d3ba92b924e77b3ece93c992b92c0b7e87b224089a866961f7b17d314f579c542fce4f8435206829b359
SHA1 hash: fd2883b7c7aa669bcb53639a1c9dd2e0e14423a2
MD5 hash: a464fa61a47ab34200042e4e3c026acd
humanhash: cola-magnesium-burger-utah
File name:z16REQUISITODECOTAÇÃOpdf.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:689'152 bytes
First seen:2024-01-30 13:29:32 UTC
Last seen:2024-02-05 10:34:51 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'740 x AgentTesla, 19'600 x Formbook, 12'241 x SnakeKeylogger)
ssdeep 12288:xhcAoIFFHgeg/civPzG8i7e5WFxyu3K4tZLXVeDofYT9IjV+BK:xhcAXFxCPz2zFtVeEfYT+jV+
TLSH T1F8E4124137FCA713D9BF47F11672019047B97A0378A2E3AD0E8561EE1D76B805652F2B
TrID 63.0% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
11.2% (.SCR) Windows screen saver (13097/50/3)
9.0% (.EXE) Win64 Executable (generic) (10523/12/4)
5.6% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
3.8% (.EXE) Win32 Executable (generic) (4505/5/1)
Reporter FXOLabs
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
5
# of downloads :
289
Origin country :
FR FR
Vendor Threat Intelligence
Malware family:
formbook
Create hunting rule
ID:
1
File name:
d58c6fee983f0750aff8aa614888ea36c5955f87f88010fc506dbe93daf736e2.exe
Verdict:
Malicious activity
Analysis date:
2024-01-30 13:37:02 UTC
Tags:
formbook xloader stealer spyware
Link:
https://app.any.run/tasks/56684e33-68d5-4032-9133-0cccf67b1fcc

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection(s):
Porcupine.Trojan.Spy.MSIL.Noon.gen.207679.UNOFFICIAL
Create hunting rule

Win.Packed.Filerepmalware-10019564-0
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
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
Creating a file
Launching cmd.exe command interpreter
Forced shutdown of a system process
Adding an exclusion to Microsoft Defender
Enabling autorun by creating a file
Unauthorized injection to a system process
Verdict:
Malicious
Labled as:
Marsilia.Generic
Link:
https://www.hybrid-analysis.com/sample/d58c6fee983f0750aff8aa614888ea36c5955f87f88010fc506dbe93daf736e2
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/319d53e4-bd6e-47d7-b019-be5ad4e4106f
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1383300
Signature
.NET source code contains method to dynamically call methods (often used by packers)
.NET source code contains potential unpacker
Adds a directory exclusion to Windows Defender
Allocates memory in foreign processes
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
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 domain / URL
Multi AV Scanner detection for dropped file
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
Sigma detected: Bad Opsec Defaults Sacrificial Processes With Improper Arguments
Sigma detected: Powershell Base64 Encoded MpPreference Cmdlet
Sigma detected: Scheduled temp file as task from temp location
Sigma detected: Suspicious Process Patterns NTDS.DIT Exfil
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
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: 1383300 Sample: z16REQUISITODECOTA#U00c7#U0... Startdate: 30/01/2024 Architecture: WINDOWS Score: 100 55 www.qieqyt.xyz 2->55 57 www.zezfhys.com 2->57 59 10 other IPs or domains 2->59 75 Snort IDS alert for network traffic 2->75 77 Multi AV Scanner detection for domain / URL 2->77 79 Found malware configuration 2->79 83 14 other signatures 2->83 11 z16REQUISITODECOTA#U00c7#U00c3Opdf.exe 7 2->11         started        15 gUWdJPsx.exe 5 2->15         started        signatures3 81 Performs DNS queries to domains with low reputation 55->81 process4 file5 51 C:\Users\user\AppData\Roaming\gUWdJPsx.exe, PE32 11->51 dropped 53 C:\Users\user\AppData\Local\...\tmp8210.tmp, XML 11->53 dropped 91 Uses schtasks.exe or at.exe to add and modify task schedules 11->91 93 Writes to foreign memory regions 11->93 95 Allocates memory in foreign processes 11->95 97 Adds a directory exclusion to Windows Defender 11->97 17 RegSvcs.exe 11->17         started        20 powershell.exe 21 11->20         started        22 schtasks.exe 1 11->22         started        99 Multi AV Scanner detection for dropped file 15->99 101 Machine Learning detection for dropped file 15->101 103 Injects a PE file into a foreign processes 15->103 24 RegSvcs.exe 15->24         started        26 schtasks.exe 1 15->26         started        28 RegSvcs.exe 15->28         started        signatures6 process7 signatures8 67 Modifies the context of a thread in another process (thread injection) 17->67 69 Maps a DLL or memory area into another process 17->69 71 Sample uses process hollowing technique 17->71 73 2 other signatures 17->73 30 explorer.exe 78 1 17->30 injected 34 WmiPrvSE.exe 20->34         started        36 conhost.exe 20->36         started        38 conhost.exe 22->38         started        40 conhost.exe 26->40         started        process9 dnsIp10 61 www.smnyg.com 154.86.173.213, 49744, 80 DXTL-HKDXTLTseungKwanOServiceHK Seychelles 30->61 63 www.aicashu.com 38.174.75.236, 49741, 80 COGENT-174US United States 30->63 65 2 other IPs or domains 30->65 105 System process connects to network (likely due to code injection or exploit) 30->105 42 cscript.exe 30->42         started        45 cmmon32.exe 30->45         started        signatures11 process12 signatures13 85 Modifies the context of a thread in another process (thread injection) 42->85 87 Maps a DLL or memory area into another process 42->87 89 Tries to detect virtualization through RDTSC time measurements 42->89 47 cmd.exe 42->47         started        process14 process15 49 conhost.exe 47->49         started       
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/d58c6fee983f0750aff8aa614888ea36c5955f87f88010fc506dbe93daf736e2
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/d58c6fee983f0750aff8aa614888ea36c5955f87f88010fc506dbe93daf736e2/
Threat name:
ByteCode-MSIL.Trojan.Marsilia
Create hunting rule
Status:
Malicious
First seen:
2024-01-29 09:47:29 UTC
File Type:
PE (.Net Exe)
Extracted files:
30
AV detection:
24 of 38 (63.16%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=2wgg73uyh4dvbl7yvjqurchkg3czkx4h7cabb7cqnw7jhwxxg3ra._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Result
Malware family:
formbook
Create hunting rule
Score:
  10/10
Tags:
family:formbook campaign:gy14 rat spyware stealer trojan
Link:
https://tria.ge/reports/240130-qrs2qagcf2/
Behaviour
Creates scheduled task(s)
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
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:
75accc0c2926e373c395dafe8324b0dbd256bb398ae8a765abbab18f2729c09a
MD5 hash:
f4aa278c181d6a5da571b7fa14025898
SHA1 hash:
523666ffb8bed7d116377446724536c553629dae
Detections:
FormBook
Create hunting rule
win_formbook_w0
Create hunting rule
win_formbook_auto
Create hunting rule
win_formbook_g0
Create hunting rule
Formbook
Create hunting rule
Link:
https://www.unpac.me/results/83541833-95fd-48f2-949d-b4c6786dfa49/
Parent samples :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 hash:
a2c446bb4642bac3d695846003c01e4b585a155c43fb2fc0b51edba01750e87a
MD5 hash:
746067727eba0e61e758623fca07d78d
SHA1 hash:
f2e971eb4624f79b6ee643bc49475724ca558562
Link:
https://www.unpac.me/results/83541833-95fd-48f2-949d-b4c6786dfa49/
SH256 hash:
3512e50a7509ca8b120d7835c69302e5d739fa3651dd65485e5739a1cc991ede
MD5 hash:
8bc76b6253fe4689a874767bdefec712
SHA1 hash:
4642b756487c2e1878e7e03e32e77b51df0b3b3e
Link:
https://www.unpac.me/results/83541833-95fd-48f2-949d-b4c6786dfa49/
SH256 hash:
48c523a035f90957271b0c6ea6a3e6a9d20c3ddbdc26c2b676ca7e519160e140
MD5 hash:
7f9d06e39f3826895983c676f37f6875
SHA1 hash:
41556e0d293b0446fa66996da5c6a8ffb638ac6e
Link:
https://www.unpac.me/results/83541833-95fd-48f2-949d-b4c6786dfa49/
SH256 hash:
d58c6fee983f0750aff8aa614888ea36c5955f87f88010fc506dbe93daf736e2
MD5 hash:
a464fa61a47ab34200042e4e3c026acd
SHA1 hash:
fd2883b7c7aa669bcb53639a1c9dd2e0e14423a2
Link:
https://www.unpac.me/results/83541833-95fd-48f2-949d-b4c6786dfa49/
Malware family:
FormBook
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/d58c6fee983f/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/d58c6fee983f0750aff8aa614888ea36c5955f87f88010fc506dbe93daf736e2

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:Check_OutputDebugStringA_iat
Create hunting rule
Rule name:DebuggerCheck__GlobalFlags
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:DebuggerCheck__QueryInfo
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:DebuggerHiding__Active
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:DebuggerHiding__Thread
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:maldoc_find_kernel32_base_method_1
Create hunting rule
Author:Didier Stevens (https://DidierStevens.com)
Rule name:maldoc_getEIP_method_1
Create hunting rule
Author:Didier Stevens (https://DidierStevens.com)
Rule name:MD5_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for MD5 constants
Rule name:meth_get_eip
Create hunting rule
Author:Willi Ballenthin
Rule name:NET
Create hunting rule
Author:malware-lu
Rule name:pe_imphash
Create hunting rule
Rule name:pe_no_import_table
Create hunting rule
Description:Detect pe file that no import table
Rule name:RIPEMD160_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for RIPEMD-160 constants
Rule name:SEH__vectored
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:SHA1_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for SHA1 constants
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 d58c6fee983f0750aff8aa614888ea36c5955f87f88010fc506dbe93daf736e2

(this sample)

  
Delivery method
Distributed via e-mail attachment

Comments