MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 5902402fafb4be22faca64535718137ce5afd70004a14657daa9e7c6c3240feb. 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: 5902402fafb4be22faca64535718137ce5afd70004a14657daa9e7c6c3240feb
SHA3-384 hash: f43708a2f9006d112446511d921580460b8287a974ed967b1ae834723944527029d9fb22de023043808b013aab36e351
SHA1 hash: 7c9a14ff443cc5de805200d6bcc750d64fb4b677
MD5 hash: a37dc47f86e84e5d0d2e6414c3cd5272
humanhash: princess-coffee-cold-fruit
File name:ekstre_pdf.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:315'768 bytes
First seen:2023-04-11 06:48:10 UTC
Last seen:2023-04-11 06:49:23 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash 56a78d55f3f7af51443e58e0ce2fb5f6 (719 x GuLoader, 451 x Formbook, 295 x Loki)
ssdeep 6144:XhtyHU2Gthj3FRzxZckklMg0GGOvGmADclkMo6xkHwQEel:Xh4G9NxWBZ0VOvGm+cpRxg/Eel
Threatray 1'333 similar samples on MalwareBazaar
TLSH T16E6423A20A70E437D8E246315A79917F9FF2BB2311F85B4397C0A6193D322D1AB1D70B
TrID 47.3% (.EXE) Win32 Executable MS Visual C++ (generic) (31206/45/13)
15.9% (.EXE) Win64 Executable (generic) (10523/12/4)
9.9% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
7.6% (.EXE) Win16 NE executable (generic) (5038/12/1)
6.8% (.EXE) Win32 Executable (generic) (4505/5/1)
File icon (PE):PE icon
dhash icon b2a89c96a2cada72 (2'283 x Formbook, 981 x Loki, 803 x AgentTesla)
Reporter lowmal3
Tags:exe FormBook signed

Code Signing Certificate

Organisation:
Issuer:
Algorithm:sha256WithRSAEncryption
Valid from:2023-02-01T07:15:07Z
Valid to:2026-01-31T07:15:07Z
Serial number: 0461caf6cbd1070c49d0cc3b4a39524337d48d2f
Thumbprint Algorithm:SHA256
Thumbprint: 4474532f7896d1b9ef268653a92982d97d1817488a9853982e7aff9d1edca361
Source:This information was brought to you by ReversingLabs A1000 Malware Analysis Platform

Intelligence

File Origin
# of uploads :
2
# of downloads :
259
Origin country :
DE DE
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
ekstre_pdf.exe
Verdict:
Malicious activity
Analysis date:
2023-04-11 06:49:18 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/7c7f8e23-0f40-4566-a1d7-4e62164238cf

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/381339/
Detection(s):
SecuriteInfo.com.Trojan.GenericKD.66343097.18193.12009.UNOFFICIAL
Create hunting rule

Result
Verdict:
Clean
Maliciousness:

Behaviour
Creating a window
Creating a file in the %temp% subdirectories
Creating a file
Creating a file in the %AppData% directory
Delayed reading of the file
Sending a custom TCP request
Result
Malware family:
n/a
Score:
  5/10
Tags:
n/a
Link:
https://dragonfly.certego.net/analysis/77322/overview
Behaviour
MalwareBazaar
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
guloader icedid overlay packed shell32.dll
Link:
https://www.filescan.io/uploads/643502e0c41e8bc6a3b0d9d0/reports/49ac7d3b-5e58-45dd-b7c9-72b2a40f23b5/overview
Verdict:
Malicious
Labled as:
Trojan.Generic
Link:
https://www.hybrid-analysis.com/sample/5902402fafb4be22faca64535718137ce5afd70004a14657daa9e7c6c3240feb
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:
Unknown
Link:
https://analyze.intezer.com/analyses/655c6993-af6f-46ff-8878-7bda19dc3b43
Result
Threat name:
FormBook, GuLoader
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1211497
Signature
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Initial sample is a PE file and has a suspicious name
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 submitted file
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 detect Any.run
Yara detected FormBook
Yara detected GuLoader
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 844419 Sample: ekstre_pdf.exe Startdate: 11/04/2023 Architecture: WINDOWS Score: 100 34 www.zetuinteriors.africa 2->34 36 www.xqan.net 2->36 38 23 other IPs or domains 2->38 56 Snort IDS alert for network traffic 2->56 58 Malicious sample detected (through community Yara rule) 2->58 60 Antivirus detection for URL or domain 2->60 62 6 other signatures 2->62 11 ekstre_pdf.exe 2 42 2->11         started        signatures3 process4 file5 32 C:\Users\user\AppData\Local\...\System.dll, PE32 11->32 dropped 70 Tries to detect Any.run 11->70 15 ekstre_pdf.exe 6 11->15         started        signatures6 process7 dnsIp8 46 34.138.169.8, 49844, 80 ATGS-MMD-ASUS United States 15->46 48 Modifies the context of a thread in another process (thread injection) 15->48 50 Tries to detect Any.run 15->50 52 Maps a DLL or memory area into another process 15->52 54 2 other signatures 15->54 19 explorer.exe 4 1 15->19 injected signatures9 process10 dnsIp11 40 www.furniture-42269.com 185.53.179.90, 49863, 80 TEAMINTERNET-ASDE Germany 19->40 42 www.credit-cards-54889.com 185.53.179.91, 49849, 80 TEAMINTERNET-ASDE Germany 19->42 44 12 other IPs or domains 19->44 64 System process connects to network (likely due to code injection or exploit) 19->64 23 cmd.exe 12 19->23         started        26 autoconv.exe 19->26         started        signatures12 process13 signatures14 66 Modifies the context of a thread in another process (thread injection) 23->66 68 Maps a DLL or memory area into another process 23->68 28 cmd.exe 1 23->28         started        process15 process16 30 conhost.exe 28->30         started       
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/5902402fafb4be22faca64535718137ce5afd70004a14657daa9e7c6c3240feb/
Threat name:
Win32.Trojan.Tnega
Create hunting rule
Status:
Malicious
First seen:
2023-04-10 07:42:42 UTC
File Type:
PE (Exe)
Extracted files:
13
AV detection:
15 of 24 (62.50%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=lebeal5pws7cf6wkmrjvogatpts27vyaasqumv62vht4nqzeb7vq._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Similar samples:
06243274174960778e1adac528d0c2641cf742fa2ba0759c9fe762f7a0692aff
Formbook
0d6ad8a921c5a4bddb51d56bb7496423ceb6996526d84fff35f595ed81093a57
Formbook
169fdf358714cd65c4451fe9ec9cb72217367296298f5b570b3e6c74f1a59f61
Formbook
241c42aa6df24b11a6d52ef542e2f1c5eceba74438e26488b3e6d5b98e1ed8e4
Formbook
7cdb9e0fde39ad1578dbd905a88c8b6492a608349c0fed0c79879f5a086108e9
Formbook
99a833a7f0d2a24daabb91a0c92132015c8f13043469199b284bc7d9e1f3c0ca
Formbook
9a24f59f2af8bc6f278f8ad8d8e9664687deef8ac0a387ea576a9d1e84837fc7
Formbook
e29c4da2ffb29da2ca94953e638058674b6234ac0c75864d644a661d582a3ab1
Formbook
f548590defc2ccbe24f628129535444295460ede5f719adb540cf1a67bcae839
Formbook
+ 1'323 additional samples on MalwareBazaar
Result
Malware family:
guloader
Create hunting rule
Score:
  10/10
Tags:
family:formbook family:guloader campaign:mi94 downloader rat spyware stealer trojan
Link:
https://tria.ge/reports/230411-hlctjscf2s/
Behaviour
Gathers network information
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of FindShellTrayWindow
Suspicious use of SendNotifyMessage
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Drops file in Windows directory
Suspicious use of NtCreateThreadExHideFromDebugger
Suspicious use of NtSetInformationThreadHideFromDebugger
Suspicious use of SetThreadContext
Checks QEMU agent file
Deletes itself
Loads dropped DLL
Formbook payload
Formbook
Guloader,Cloudeye
Unpacked files
SH256 hash:
842bb829bb9f05c9e2ed1fe129c89e05dea3c9175368300ea387b3e39762a4be
MD5 hash:
403dbd8bcddb0c97371155c54bbdf20d
SHA1 hash:
1345b60f986a4c47f35c81c0f8795b922ddd5989
Link:
https://www.unpac.me/results/12f98980-1338-4531-8edc-bfb106ddb672/
SH256 hash:
5902402fafb4be22faca64535718137ce5afd70004a14657daa9e7c6c3240feb
MD5 hash:
a37dc47f86e84e5d0d2e6414c3cd5272
SHA1 hash:
7c9a14ff443cc5de805200d6bcc750d64fb4b677
Link:
https://www.unpac.me/results/12f98980-1338-4531-8edc-bfb106ddb672/
Malware family:
FormBook
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/5902402fafb4/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Legit
Score:
0.19
Link:
https://yomi.yoroi.company/submissions/5902402fafb4be22faca64535718137ce5afd70004a14657daa9e7c6c3240feb

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:PE_Digital_Certificate
Create hunting rule
Author:albertzsigovits
Rule name:PE_Potentially_Signed_Digital_Certificate
Create hunting rule
Author:albertzsigovits
Rule name:shellcode
Create hunting rule
Author:nex
Description:Matched shellcode byte patterns

File information

The table below shows additional information about this malware sample such as delivery method and external references.

Malspam

Formbook

Executable exe 5902402fafb4be22faca64535718137ce5afd70004a14657daa9e7c6c3240feb

(this sample)

  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/381339/

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