MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 4874958587695f991e81ddbdd809c56c5702877e8cd5500936005d41b5e3c734. 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: 17


Intelligence 17 IOCs YARA 2 File information Comments
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SHA256 hash: 4874958587695f991e81ddbdd809c56c5702877e8cd5500936005d41b5e3c734
SHA3-384 hash: 1d8e571d66b1da45a6effb553aa6d49212f20b174054dd6e8b20b086f8e46d324727ce9be231d3bbc5a66c62d0ab9a2a
SHA1 hash: 2887586c70b5c66305a94e053ad4a30466571084
MD5 hash: 78531891a08adb42eb325b383d93f3f8
humanhash: alpha-may-paris-mobile
File name:MN28102022.exe
Download: download sample
Signature Formbook
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File size:896'512 bytes
First seen:2022-10-29 03:18:19 UTC
Last seen:2022-10-31 10:21:29 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'748 x AgentTesla, 19'652 x Formbook, 12'246 x SnakeKeylogger)
ssdeep 24576:qEn0tR6Hqj5GCjRj0atHKjexPJDXKr7swH/orX3g39:L0hjQAj0atH2e9JDXiHfob3G
TLSH T18F1502BFB2E78F42D7EC1731C4C2921543E9868955B3E71FA66812E40C433A3F952AD9
TrID 61.5% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
11.0% (.SCR) Windows screen saver (13101/52/3)
8.8% (.EXE) Win64 Executable (generic) (10523/12/4)
5.5% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
4.2% (.EXE) Win16 NE executable (generic) (5038/12/1)
Reporter GovCERT_CH
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
3
# of downloads :
630
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
formbook
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ID:
1
File name:
MN28102022.exe
Verdict:
Malicious activity
Analysis date:
2022-10-29 03:21:12 UTC
Tags:
formbook trojan stealer
Link:
https://app.any.run/tasks/73b2d06c-7944-48d7-a03f-d60d72ca96a8

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
Formbook
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Link:
https://www.capesandbox.com/analysis/325716/
Detection(s):
SecuriteInfo.com.Trojan.Siggen18.65087.1825.7187.UNOFFICIAL
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Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Unauthorized injection to a recently created process
Creating a file
Launching a process
Сreating synchronization primitives
Launching cmd.exe command interpreter
Searching for synchronization primitives
Setting browser functions hooks
Unauthorized injection to a system process
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
clipbanker formbook nanocore packed
Link:
https://www.filescan.io/uploads/635c9ba7736e9d884f0d83b2/reports/44e32139-a2eb-4822-a656-4789f15b2d5a/overview
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/66c006fe-ad27-455c-940c-f6b08db9f6ad
Result
Threat name:
FormBook
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Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1100739
Signature
.NET source code contains method to dynamically call methods (often used by packers)
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Injects a PE file into a foreign processes
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 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 sandboxes and other dynamic analysis tools (process name or module or function)
Tries to detect virtualization through RDTSC time measurements
Yara detected AntiVM3
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 733400 Sample: MN28102022.exe Startdate: 29/10/2022 Architecture: WINDOWS Score: 100 36 Snort IDS alert for network traffic 2->36 38 Malicious sample detected (through community Yara rule) 2->38 40 Antivirus detection for URL or domain 2->40 42 8 other signatures 2->42 10 MN28102022.exe 3 2->10         started        process3 file4 28 C:\Users\user\AppData\...\MN28102022.exe.log, ASCII 10->28 dropped 52 Tries to detect virtualization through RDTSC time measurements 10->52 54 Injects a PE file into a foreign processes 10->54 14 MN28102022.exe 10->14         started        signatures5 process6 signatures7 56 Modifies the context of a thread in another process (thread injection) 14->56 58 Maps a DLL or memory area into another process 14->58 60 Sample uses process hollowing technique 14->60 62 Queues an APC in another process (thread injection) 14->62 17 explorer.exe 14->17 injected process8 dnsIp9 30 www.thecolorbuzz.com 164.155.188.71, 49703, 80 IKGUL-26484US South Africa 17->30 32 www.lancasterrec.online 209.17.116.163, 49700, 80 DEFENSE-NETUS United States 17->32 34 8 other IPs or domains 17->34 44 System process connects to network (likely due to code injection or exploit) 17->44 21 rundll32.exe 17->21         started        signatures10 process11 signatures12 46 Modifies the context of a thread in another process (thread injection) 21->46 48 Maps a DLL or memory area into another process 21->48 50 Tries to detect virtualization through RDTSC time measurements 21->50 24 cmd.exe 1 21->24         started        process13 process14 26 conhost.exe 24->26         started       
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/4874958587695f991e81ddbdd809c56c5702877e8cd5500936005d41b5e3c734/
Threat name:
ByteCode-MSIL.Spyware.Noon
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Status:
Malicious
First seen:
2022-10-28 05:04:35 UTC
File Type:
PE (.Net Exe)
Extracted files:
22
AV detection:
13 of 26 (50.00%)
Threat level:
  2/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=jb2jlbmhnfpzshub3w65qcofnrlqfb36rtkvacjwaboudnpdy42a._file
Verdict:
malicious
Label(s):
formbook
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Result
Malware family:
formbook
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Score:
  10/10
Tags:
family:formbook campaign:th47 rat spyware stealer trojan
Link:
https://tria.ge/reports/221029-dt6z5safdl/
Behaviour
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
Suspicious use of SetThreadContext
Deletes itself
Formbook payload
Formbook
Verdict:
Suspicious
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/6bb9d0bc-11f9-4d26-9db4-b312cae7f25a
Unpacked files
SH256 hash:
630c4eb51628e06077fd2e3e47def8d41f9e373cc895ab424ade0592040496a4
MD5 hash:
dd6b9fbc8d83027a1ffaa2c29d5b996a
SHA1 hash:
24a8cf4f688e325aba779e69d86969eb954dd904
Detections:
FormBook
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win_formbook_auto
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win_formbook_g0
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Link:
https://www.unpac.me/results/3ff7cf40-9437-474d-a754-5693aab0b6f1/
Parent samples :
95747924e9aaef24f1d50fbcf529488eadb11e979b68626b01f77cfd267766ad
970a19abf7f723392ba6b7bebddfdf23580bc65869b5149f5288f9dbec8bd84c
4874958587695f991e81ddbdd809c56c5702877e8cd5500936005d41b5e3c734
8609c653acdc7e73ef670f8890468bae5d77094e41a023715054e3cb4c73ea32
a68a00fe2cda67c8b0a15bbc5a3a26301d736e0481fa2152dbce2211b58da1e1
SH256 hash:
d57696549a28b8197f5234ddaf1c07df08be93a32dc20283422967dd5d1d71b8
MD5 hash:
88732961542a1fe347f2868dd591575c
SHA1 hash:
8ef937c612a57eb7ba54395688e744aaccfb861a
Link:
https://www.unpac.me/results/3ff7cf40-9437-474d-a754-5693aab0b6f1/
SH256 hash:
a327516357b9fa1a75753b3fbd0030e13f374be7cefcdf983d0b731f278b0c59
MD5 hash:
404efdeb9931733904da07f96fabeb72
SHA1 hash:
7ce363cd612f1d9a90b33ec196c4d0a49cdaee02
Link:
https://www.unpac.me/results/3ff7cf40-9437-474d-a754-5693aab0b6f1/
SH256 hash:
4874958587695f991e81ddbdd809c56c5702877e8cd5500936005d41b5e3c734
MD5 hash:
78531891a08adb42eb325b383d93f3f8
SHA1 hash:
2887586c70b5c66305a94e053ad4a30466571084
Link:
https://www.unpac.me/results/3ff7cf40-9437-474d-a754-5693aab0b6f1/
Malware family:
FormBook
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Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/487495858769/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Suspicious File
Score:
0.55
Link:
https://yomi.yoroi.company/submissions/4874958587695f991e81ddbdd809c56c5702877e8cd5500936005d41b5e3c734

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:pe_imphash
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Rule name:Skystars_Malware_Imphash
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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

r09 c9ca14d7d5bf2614574c9b805da57944f14002228e2ece2db929f22ba8afd0d8

Formbook

Executable exe 4874958587695f991e81ddbdd809c56c5702877e8cd5500936005d41b5e3c734

(this sample)

  
Dropped by
formbook
  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/325716/
  
Dropped by
SHA256 c9ca14d7d5bf2614574c9b805da57944f14002228e2ece2db929f22ba8afd0d8
  
Dropped by
MD5 adb84f6b3e1fcaeaca7b14697c6f0a10

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