MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 c3cab31d3036e4d8d4f24084ecf281cb30463cf2ed2a9c7245cf4ddf7c11a936. 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 19 File information Comments
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SHA256 hash: c3cab31d3036e4d8d4f24084ecf281cb30463cf2ed2a9c7245cf4ddf7c11a936
SHA3-384 hash: 3809332e8763d6e13d4203cf2558c101b12b170cf075904f36d5833411b5eefd231993242ad5ad58c481ec443fbda03a
SHA1 hash: afddb9b5a6590c7ce2f7565732a2d0e8be015220
MD5 hash: c912ce12211fa8420fee445a57fe9933
humanhash: nitrogen-queen-monkey-vegan
File name:z52Novopedidodecomprapdf.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:682'496 bytes
First seen:2023-12-06 17:30:03 UTC
Last seen:2023-12-06 19:18:01 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'663 x AgentTesla, 19'478 x Formbook, 12'208 x SnakeKeylogger)
ssdeep 12288:ik5nF8ME6jD/2TfsNyk4wpD+ENe5V0TgNWV68dCOxFujb0KXwlBjsp4hHr:ikPtD/2DIiEWV0TgNT8d/ujb0SwlBjse
Threatray 559 similar samples on MalwareBazaar
TLSH T12BE4126433FDAF9AD4AAA3F40B21D21017B07C2A5979E60C1CC731CE4A79F946671B63
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 :
2
# of downloads :
319
Origin country :
FR FR
Vendor Threat Intelligence
Malware family:
formbook
Create hunting rule
ID:
1
File name:
z52Novopedidodecomprapdf.exe
Verdict:
Malicious activity
Analysis date:
2023-12-06 17:32:13 UTC
Tags:
formbook xloader
Link:
https://app.any.run/tasks/b6dca06d-8fc2-4b99-a9da-96b0cb32d837

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/462976/
Detection(s):
SecuriteInfo.com.Trojan.PackedNET.2562.2069.287.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
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
Threat level:
  10/10
Confidence:
100%
Tags:
packed
Link:
https://www.filescan.io/uploads/6570afda18cffa73b1dc4140/reports/6610de67-bf2a-4c51-bd32-921b5203a722/overview
Verdict:
Malicious
Labled as:
Trojan.Generic
Link:
https://www.hybrid-analysis.com/sample/c3cab31d3036e4d8d4f24084ecf281cb30463cf2ed2a9c7245cf4ddf7c11a936
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
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Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/7ca259a4-2709-42f5-afe0-d136339f323a
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1354828
Signature
.NET source code contains potential unpacker
.NET source code contains very large array initializations
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 ipconfig to lookup or modify the Windows network 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: 1354828 Sample: z52Novopedidodecomprapdf.exe Startdate: 06/12/2023 Architecture: WINDOWS Score: 100 53 www.y0rvragmr5.com 2->53 55 www.xn--srsz50dqxa5xb3rn52a.com 2->55 57 13 other IPs or domains 2->57 75 Snort IDS alert for network traffic 2->75 77 Found malware configuration 2->77 79 Malicious sample detected (through community Yara rule) 2->79 81 10 other signatures 2->81 11 z52Novopedidodecomprapdf.exe 7 2->11         started        15 HzlgWIPTnEVQp.exe 5 2->15         started        signatures3 process4 file5 49 C:\Users\user\AppData\...\HzlgWIPTnEVQp.exe, PE32 11->49 dropped 51 C:\Users\user\AppData\Local\...\tmpE46E.tmp, XML 11->51 dropped 89 Uses schtasks.exe or at.exe to add and modify task schedules 11->89 91 Writes to foreign memory regions 11->91 93 Allocates memory in foreign processes 11->93 95 Adds a directory exclusion to Windows Defender 11->95 17 RegSvcs.exe 11->17         started        20 RegSvcs.exe 11->20         started        22 powershell.exe 21 11->22         started        28 2 other processes 11->28 97 Multi AV Scanner detection for dropped file 15->97 99 Machine Learning detection for dropped file 15->99 101 Injects a PE file into a foreign processes 15->101 24 RegSvcs.exe 15->24         started        26 schtasks.exe 1 15->26         started        signatures6 process7 signatures8 65 Modifies the context of a thread in another process (thread injection) 17->65 67 Maps a DLL or memory area into another process 17->67 69 Sample uses process hollowing technique 17->69 71 Queues an APC in another process (thread injection) 17->71 30 explorer.exe 40 1 17->30 injected 73 Tries to detect virtualization through RDTSC time measurements 20->73 34 conhost.exe 22->34         started        36 conhost.exe 26->36         started        38 conhost.exe 28->38         started        process9 dnsIp10 59 trsmine.com 208.109.57.58, 49716, 80 SUCURI-SECUS United States 30->59 61 www.hvvwff.net 75.126.104.249, 49719, 80 SOFTLAYERUS United States 30->61 63 4 other IPs or domains 30->63 103 System process connects to network (likely due to code injection or exploit) 30->103 105 Uses ipconfig to lookup or modify the Windows network settings 30->105 40 chkdsk.exe 30->40         started        43 ipconfig.exe 30->43         started        signatures11 process12 signatures13 83 Modifies the context of a thread in another process (thread injection) 40->83 85 Maps a DLL or memory area into another process 40->85 87 Tries to detect virtualization through RDTSC time measurements 40->87 45 cmd.exe 40->45         started        process14 process15 47 conhost.exe 45->47         started       
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/c3cab31d3036e4d8d4f24084ecf281cb30463cf2ed2a9c7245cf4ddf7c11a936
Detection:
formbook
Create hunting rule
Link:
https://mwdb.cert.pl/sample/c3cab31d3036e4d8d4f24084ecf281cb30463cf2ed2a9c7245cf4ddf7c11a936/
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
Create hunting rule
Status:
Malicious
First seen:
2023-12-05 14:40:41 UTC
File Type:
PE (.Net Exe)
Extracted files:
28
AV detection:
22 of 37 (59.46%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=ypflghjqg3snrvhsiccoz4ubzmyemphs5uvjy4sfz5g567arve3a._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Similar samples:
1f92a8f73f872a9f016a80c61c829734abfe89e1148a8f38e885a534b64b3141
Formbook
2a0883f81fa813b247ae1243050bc720926599286a213725a86a50ced42c0ead
Formbook
78854920bdb00256902029bebce69365c42a97b0431ff35c48f6faf5951f24e3
Formbook
88f646bcc3692ddd21205ec14a93ababd3ab2e9bb017ed838a2f375ac153d21f
Formbook
+ 549 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/231206-v27p3sfh7w/
Behaviour
Gathers network information
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of UnmapMainImage
Suspicious use of WriteProcessMemory
Creates scheduled task(s)
Enumerates physical storage devices
Program crash
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/908a8ec1-fe8f-4a54-8c98-f0b2e0dd8a2b/
Parent samples :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 hash:
d01f3dea3851602ba5a0586c60430d286adf6fcc7e17aab080601a66630606e5
MD5 hash:
579197d4f760148a9482d1ebde113259
SHA1 hash:
cf6924eb360c7e5a117323bebcb6ee02d2aec86d
Link:
https://www.unpac.me/results/908a8ec1-fe8f-4a54-8c98-f0b2e0dd8a2b/
SH256 hash:
7fa6342560b497a18146dd6b9841992b18d9c077135977fe26139821058a4cd3
MD5 hash:
b4bbca1c613fcae703f1ec6fd514c496
SHA1 hash:
4145d88512331f57472fac46cf1742d97a2d1a8c
Link:
https://www.unpac.me/results/908a8ec1-fe8f-4a54-8c98-f0b2e0dd8a2b/
SH256 hash:
ec5df93751463b2862fce5ed0c61ac28e176da21c18181767534ca037a2789a1
MD5 hash:
34f3e13fc4636e2da287b0ef87f9ce23
SHA1 hash:
0bd6464862a516e5fbe2959b167fb25ede1a937c
Link:
https://www.unpac.me/results/908a8ec1-fe8f-4a54-8c98-f0b2e0dd8a2b/
SH256 hash:
c3cab31d3036e4d8d4f24084ecf281cb30463cf2ed2a9c7245cf4ddf7c11a936
MD5 hash:
c912ce12211fa8420fee445a57fe9933
SHA1 hash:
afddb9b5a6590c7ce2f7565732a2d0e8be015220
Link:
https://www.unpac.me/results/908a8ec1-fe8f-4a54-8c98-f0b2e0dd8a2b/
Malware family:
FormBook
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/c3cab31d3036/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/c3cab31d3036e4d8d4f24084ecf281cb30463cf2ed2a9c7245cf4ddf7c11a936

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__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:NETexecutableMicrosoft
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 c3cab31d3036e4d8d4f24084ecf281cb30463cf2ed2a9c7245cf4ddf7c11a936

(this sample)

  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/462976/

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