MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 d90dd100eb8d2c639e9615f0657073e840f080f8a9a7a75f8f978fd13145fe0c. 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: 15


Intelligence 15 IOCs YARA 4 File information Comments
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SHA256 hash: d90dd100eb8d2c639e9615f0657073e840f080f8a9a7a75f8f978fd13145fe0c
SHA3-384 hash: 0b7c45f4811cc13dfd22a944e35e6e67bfa0e1d962914792a6f1f1cdd5b4d7117cb6f526cd2a177856e3f231c0500903
SHA1 hash: 9e3da3d1ee87e261d16216f33d2e183a1f3afe41
MD5 hash: 82b7aa86cfef6b60df375ba59fb42793
humanhash: connecticut-india-emma-saturn
File name:r45075USD(MT103)_pdf.exe
Download: download sample
Signature Formbook
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File size:691'200 bytes
First seen:2024-01-30 13:09:22 UTC
Last seen:2024-02-05 11:55:18 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'652 x AgentTesla, 19'463 x Formbook, 12'204 x SnakeKeylogger)
ssdeep 12288:hAoIFFHgeg/c8ePeNXyZ4/xcJPUk4uHWCnwmCXG4K3jvfev+q4qTifsYH:hAXFx8egXQUxcJPUk1HmWz3jvfe7ifL
TLSH T137E412403BE85B56CA3B8BF02975906053B6792736B2E75D4EC2B0CE1E73F054661B2B
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 :
310
Origin country :
BR BR
Vendor Threat Intelligence
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/473591/
Detection(s):
Win.Packed.Filerepmalware-10019564-0
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Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Сreating synchronization primitives
Unauthorized injection to a recently created process
Restart of the analyzed sample
Creating a file
Launching a process
Launching cmd.exe command interpreter
Setting browser functions hooks
Unauthorized injection to a system process
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
masquerade packed
Link:
https://www.filescan.io/uploads/65b8f532bc91f83c807229be/reports/9ed24614-b0ff-4712-93f9-ab26edd1c6dc/overview
Verdict:
Malicious
Labled as:
Marsilia.Generic
Link:
https://www.hybrid-analysis.com/sample/d90dd100eb8d2c639e9615f0657073e840f080f8a9a7a75f8f978fd13145fe0c
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/fb99b635-d38c-4086-a040-9953c62e6953
Result
Threat name:
FormBook
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Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1383292
Signature
.NET source code contains method to dynamically call methods (often used by packers)
.NET source code contains potential unpacker
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Found malware configuration
Initial sample is a PE file and has a suspicious name
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 virtualization through RDTSC time measurements
Yara detected AntiVM3
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1383292 Sample: r45075USD(MT103)_pdf.exe Startdate: 30/01/2024 Architecture: WINDOWS Score: 100 34 www.techforfun.site 2->34 36 www.shitigo.com 2->36 38 13 other IPs or domains 2->38 42 Snort IDS alert for network traffic 2->42 44 Found malware configuration 2->44 46 Malicious sample detected (through community Yara rule) 2->46 48 10 other signatures 2->48 11 r45075USD(MT103)_pdf.exe 3 2->11         started        signatures3 process4 signatures5 56 Tries to detect virtualization through RDTSC time measurements 11->56 58 Injects a PE file into a foreign processes 11->58 14 r45075USD(MT103)_pdf.exe 11->14         started        process6 signatures7 60 Modifies the context of a thread in another process (thread injection) 14->60 62 Maps a DLL or memory area into another process 14->62 64 Sample uses process hollowing technique 14->64 66 Queues an APC in another process (thread injection) 14->66 17 explorer.exe 67 1 14->17 injected process8 dnsIp9 28 gohao-winn.com 84.32.84.32, 49742, 49748, 80 NTT-LT-ASLT Lithuania 17->28 30 www.shitigo.com 23.80.218.58, 49740, 80 LEASEWEB-USA-LAX-11US United States 17->30 32 5 other IPs or domains 17->32 40 System process connects to network (likely due to code injection or exploit) 17->40 21 cmmon32.exe 17->21         started        signatures10 process11 signatures12 50 Modifies the context of a thread in another process (thread injection) 21->50 52 Maps a DLL or memory area into another process 21->52 54 Tries to detect virtualization through RDTSC time measurements 21->54 24 cmd.exe 1 21->24         started        process13 process14 26 conhost.exe 24->26         started       
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/d90dd100eb8d2c639e9615f0657073e840f080f8a9a7a75f8f978fd13145fe0c
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/d90dd100eb8d2c639e9615f0657073e840f080f8a9a7a75f8f978fd13145fe0c/
Threat name:
ByteCode-MSIL.Trojan.Taskun
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Status:
Malicious
First seen:
2024-01-29 09:54:32 UTC
File Type:
PE (.Net Exe)
Extracted files:
30
AV detection:
21 of 24 (87.50%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=3eg5cahlruwghhuwcxygk4dt5bapbahyvgt2ox4ps6h5cmkf7yga._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:m21s rat spyware stealer trojan
Link:
https://tria.ge/reports/240130-qectzagbh9/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of UnmapMainImage
Suspicious use of WriteProcessMemory
Suspicious use of SetThreadContext
Deletes itself
Formbook payload
Formbook
Unpacked files
SH256 hash:
642a1c7ce26df96c5da53ad3bce2bb11e2c42e43e35bc29f79c034a3015cadfb
MD5 hash:
25e77be252ea7d97cbe177788e919c21
SHA1 hash:
f3dadfa5859837f420257cb63035a9da5b492c76
Detections:
FormBook
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win_formbook_w0
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win_formbook_auto
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win_formbook_g0
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Formbook
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Link:
https://www.unpac.me/results/2fd47018-7802-4a73-ad62-67dfc312211b/
Parent samples :
d90dd100eb8d2c639e9615f0657073e840f080f8a9a7a75f8f978fd13145fe0c
b42726f4443540c3f83c7dda13ae14f39a143193e5dfb97d03ae4bec6333f364
478bdcdd85ddc7287b5dde32391881591cc77db75412ef5340f5bd3531738245
09f9e396b1ec5f3ced056eb12923560e28f0a7ed1e8fb5b7468a005acf3a8881
SH256 hash:
a2c446bb4642bac3d695846003c01e4b585a155c43fb2fc0b51edba01750e87a
MD5 hash:
746067727eba0e61e758623fca07d78d
SHA1 hash:
f2e971eb4624f79b6ee643bc49475724ca558562
Link:
https://www.unpac.me/results/2fd47018-7802-4a73-ad62-67dfc312211b/
SH256 hash:
6e5fc76658af24a27465b550dbb579ebfbc7750dac69859b7e3abc33e07b16fc
MD5 hash:
813b56372f0ca82b0dcde9b10b50f7e1
SHA1 hash:
7c1f82a0220b648c9a7211436ccd1d49c16e0081
Link:
https://www.unpac.me/results/2fd47018-7802-4a73-ad62-67dfc312211b/
SH256 hash:
3512e50a7509ca8b120d7835c69302e5d739fa3651dd65485e5739a1cc991ede
MD5 hash:
8bc76b6253fe4689a874767bdefec712
SHA1 hash:
4642b756487c2e1878e7e03e32e77b51df0b3b3e
Link:
https://www.unpac.me/results/2fd47018-7802-4a73-ad62-67dfc312211b/
SH256 hash:
d90dd100eb8d2c639e9615f0657073e840f080f8a9a7a75f8f978fd13145fe0c
MD5 hash:
82b7aa86cfef6b60df375ba59fb42793
SHA1 hash:
9e3da3d1ee87e261d16216f33d2e183a1f3afe41
Link:
https://www.unpac.me/results/2fd47018-7802-4a73-ad62-67dfc312211b/
Malware family:
FormBook
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Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/d90dd100eb8d/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/d90dd100eb8d2c639e9615f0657073e840f080f8a9a7a75f8f978fd13145fe0c

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
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Author:schmidtsz
Description:Identify partial Agent Tesla strings
Rule name:NET
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Author:malware-lu
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

Executable exe d90dd100eb8d2c639e9615f0657073e840f080f8a9a7a75f8f978fd13145fe0c

(this sample)

  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/473591/

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