MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 dd5db5ca37b7e3a33e323e2c984b9bf12eac507d76ad6e037b752b88563df71d. 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 17 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: dd5db5ca37b7e3a33e323e2c984b9bf12eac507d76ad6e037b752b88563df71d
SHA3-384 hash: 37d655542250aeb7bfb9a673d6104bb3bc48a66b1661351a4add8082301a4a67d9144fb42b8cfc8d8a5aee3253d3b752
SHA1 hash: 5e76cf2a8bb4ef97081fb5e54bb07909dce11008
MD5 hash: 5f41ef29e36747fa9dcf6c88d6442be2
humanhash: enemy-oregon-bluebird-connecticut
File name:z1ORDENDECOMPRAURGENTEpdf.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:608'256 bytes
First seen:2023-11-29 14:26:06 UTC
Last seen:2023-11-29 16:28:04 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'742 x AgentTesla, 19'607 x Formbook, 12'242 x SnakeKeylogger)
ssdeep 12288:LHJ5ARocawrt1X0W/ynigTSvzNw+RsesfJaEdVVl/gOopox:V5q2W/6iySvO+cf/dV3Pe
Threatray 1'404 similar samples on MalwareBazaar
TLSH T1B8D40210E5BC1B26E47B47FE0A656180C3F5A83F2131E7995DD230EB1AA1F580B91F6B
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 FXOLabs
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
3
# of downloads :
308
Origin country :
BR BR
Vendor Threat Intelligence
Malware family:
formbook
Create hunting rule
ID:
1
File name:
z1ORDENDECOMPRAURGENTEpdf.exe
Verdict:
Malicious activity
Analysis date:
2023-11-29 14:27:49 UTC
Tags:
formbook xloader
Link:
https://app.any.run/tasks/e5afbfc9-aa9a-4abd-98c6-45e2b7fa3898

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/461208/
Detection(s):
SecuriteInfo.com.Win32.CrypterX-gen.20229.25724.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
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
Adding an exclusion to Microsoft Defender
Enabling autorun by creating a file
Unauthorized injection to a system process
Verdict:
Malicious
Labled as:
Win/malicious_confidence_100%
Link:
https://www.hybrid-analysis.com/sample/dd5db5ca37b7e3a33e323e2c984b9bf12eac507d76ad6e037b752b88563df71d
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/337a53d6-d58b-48eb-a62e-4ad4607e42cf
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1349920
Signature
.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 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
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 netsh to modify the Windows network and firewall settings
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: 1349920 Sample: z1ORDENDECOMPRAURGENTEpdf.exe Startdate: 29/11/2023 Architecture: WINDOWS Score: 100 51 www.zgtiku.com 2->51 53 www.wellhousesctx.com 2->53 55 14 other IPs or domains 2->55 71 Snort IDS alert for network traffic 2->71 73 Found malware configuration 2->73 75 Malicious sample detected (through community Yara rule) 2->75 77 9 other signatures 2->77 11 z1ORDENDECOMPRAURGENTEpdf.exe 7 2->11         started        15 RSxXXE.exe 5 2->15         started        signatures3 process4 file5 47 C:\Users\user\AppData\Roaming\RSxXXE.exe, PE32 11->47 dropped 49 C:\Users\user\AppData\Local\...\tmp8AC7.tmp, XML 11->49 dropped 85 Uses schtasks.exe or at.exe to add and modify task schedules 11->85 87 Writes to foreign memory regions 11->87 89 Allocates memory in foreign processes 11->89 91 Adds a directory exclusion to Windows Defender 11->91 17 RegSvcs.exe 11->17         started        20 powershell.exe 22 11->20         started        22 schtasks.exe 1 11->22         started        93 Multi AV Scanner detection for dropped file 15->93 95 Machine Learning detection for dropped file 15->95 97 Injects a PE file into a foreign processes 15->97 24 RegSvcs.exe 15->24         started        26 schtasks.exe 1 15->26         started        signatures6 process7 signatures8 63 Modifies the context of a thread in another process (thread injection) 17->63 65 Maps a DLL or memory area into another process 17->65 67 Sample uses process hollowing technique 17->67 69 2 other signatures 17->69 28 explorer.exe 39 1 17->28 injected 32 conhost.exe 20->32         started        34 conhost.exe 22->34         started        36 conhost.exe 26->36         started        process9 dnsIp10 57 trsmine.com 208.109.57.58, 49718, 80 SUCURI-SECUS United States 28->57 59 koru.clinic 81.169.145.77, 49721, 80 STRATOSTRATOAGDE Germany 28->59 61 6 other IPs or domains 28->61 99 System process connects to network (likely due to code injection or exploit) 28->99 101 Uses netsh to modify the Windows network and firewall settings 28->101 38 netsh.exe 28->38         started        41 systray.exe 28->41         started        signatures11 process12 signatures13 79 Modifies the context of a thread in another process (thread injection) 38->79 81 Maps a DLL or memory area into another process 38->81 83 Tries to detect virtualization through RDTSC time measurements 38->83 43 cmd.exe 1 38->43         started        process14 process15 45 conhost.exe 43->45         started       
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/dd5db5ca37b7e3a33e323e2c984b9bf12eac507d76ad6e037b752b88563df71d
Detection:
formbook
Create hunting rule
Link:
https://mwdb.cert.pl/sample/dd5db5ca37b7e3a33e323e2c984b9bf12eac507d76ad6e037b752b88563df71d/
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
Create hunting rule
Status:
Malicious
First seen:
2023-11-29 11:25:02 UTC
File Type:
PE (.Net Exe)
Extracted files:
11
AV detection:
17 of 23 (73.91%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=3vo3lsrxw7r2gprshywjqs436exkyud5o2ww4a33ouvyqvr564oq._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Similar samples:
4fa40e3581a918c9056869d70903c1cece412ef17ad7dc2e26526f3963bfe015
Formbook
5e4b300ac46a2d4719d60e261c479afc3ed6f4027afcb5f620a7bdf33d876336
Formbook
881bd1f6b3a38e6e6bf2c43c904b65beeba6a00a109319da26b360e12579ac30
Formbook
fa86b4d3e3e4217d2c502925eb6c41fb7a9bf0a17a976fc6a11a849d5861c8d0
Formbook
+ 1'394 additional samples on MalwareBazaar
Result
Malware family:
formbook
Create hunting rule
Score:
  10/10
Tags:
family:formbook campaign:ey16 rat spyware stealer trojan
Link:
https://tria.ge/reports/231129-rsefdsha3s/
Behaviour
Creates scheduled task(s)
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of UnmapMainImage
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Suspicious use of SetThreadContext
Checks computer location settings
Formbook payload
Formbook
Unpacked files
SH256 hash:
5be1f28d9498131099c4989b821b1a289e9ee6475472309482db944fc99e2fab
MD5 hash:
c1d50dfc28e785fef6639c4619cea4af
SHA1 hash:
39ef93d0350a6edd0bbbeabf0ff361fbd913f8fe
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/51c1c2ba-1740-46d9-8bb0-fd6f25d08c76/
Parent samples :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 hash:
4ba6157b6e366831a078774c702501f30bafa39fbe48710d426c20df8ad238ba
MD5 hash:
5d054ef7ea5e19debe90db219e918146
SHA1 hash:
f2d16dd1e254272be86cab6274e3a8467a76c51b
Link:
https://www.unpac.me/results/51c1c2ba-1740-46d9-8bb0-fd6f25d08c76/
SH256 hash:
d01f3dea3851602ba5a0586c60430d286adf6fcc7e17aab080601a66630606e5
MD5 hash:
579197d4f760148a9482d1ebde113259
SHA1 hash:
cf6924eb360c7e5a117323bebcb6ee02d2aec86d
Link:
https://www.unpac.me/results/51c1c2ba-1740-46d9-8bb0-fd6f25d08c76/
SH256 hash:
e88a0ecd8a546b81993a01d5b181a76b677fd22489b221456dbce358202947e1
MD5 hash:
384cfbef6fbbdbead98fc4cca80b3366
SHA1 hash:
850cb66538638faaf0b02be400c68e6de7ec873c
Link:
https://www.unpac.me/results/51c1c2ba-1740-46d9-8bb0-fd6f25d08c76/
SH256 hash:
dd5db5ca37b7e3a33e323e2c984b9bf12eac507d76ad6e037b752b88563df71d
MD5 hash:
5f41ef29e36747fa9dcf6c88d6442be2
SHA1 hash:
5e76cf2a8bb4ef97081fb5e54bb07909dce11008
Link:
https://www.unpac.me/results/51c1c2ba-1740-46d9-8bb0-fd6f25d08c76/
Malware family:
FormBook
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/dd5db5ca37b7/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/dd5db5ca37b7e3a33e323e2c984b9bf12eac507d76ad6e037b752b88563df71d

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:DebuggerCheck__API
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
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 dd5db5ca37b7e3a33e323e2c984b9bf12eac507d76ad6e037b752b88563df71d

(this sample)

  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/461208/

Comments