MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 79e04a99e2c53eaa98af95fd0a86bddf3cc4b0f62c385cfdfa5662738007fdd1. 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: 16


Intelligence 16 IOCs YARA 2 File information Comments
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SHA256 hash: 79e04a99e2c53eaa98af95fd0a86bddf3cc4b0f62c385cfdfa5662738007fdd1
SHA3-384 hash: e50ffb9768f5e20e603dc17f73e1087896187b6aaf9a426503508d23087152174f501308e49928beec3fff897c73d086
SHA1 hash: fe001c7fc791db65cbee53c476cd47ef4357873d
MD5 hash: 2c42cf5529ffc3f40ab696b77d01e70b
humanhash: wolfram-pluto-asparagus-black
File name:Factura de proforma .pdf.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:863'232 bytes
First seen:2022-09-23 05:26:32 UTC
Last seen:Never
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:N5DsZW9CgS1UgDagqpoKpTP2WSU/N4yl2EPaEl3kh:Nq84r8gqpoc2K/N4O2uJi
Threatray 15'733 similar samples on MalwareBazaar
TLSH T19205CF54166DCA06C839AA74CC93E2701BE79DD4436AC23B49DBBCB7F136358E993360
TrID 72.5% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
10.4% (.EXE) Win64 Executable (generic) (10523/12/4)
6.5% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
4.4% (.EXE) Win32 Executable (generic) (4505/5/1)
2.0% (.EXE) OS/2 Executable (generic) (2029/13)
Reporter adrian__luca
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
1
# of downloads :
249
Origin country :
n/a
Vendor Threat Intelligence
Detection:
Formbook
Create hunting rule
Link:
https://www.capesandbox.com/analysis/312490/
Detection(s):
SecuriteInfo.com.Win32.PWSX-gen.8082.UNOFFICIAL
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Porcupine.MSIL.Kryptik.AGMT.18872.UNOFFICIAL
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Win.Packed.Formbook-9970567-0
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Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Creating a window
Sending a custom TCP request
Launching a process
Creating a process with a hidden window
Launching cmd.exe command interpreter
Unauthorized injection to a system process
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
packed
Link:
https://www.filescan.io/uploads/632d43b512db32f02469979f/reports/f0140392-e6c1-41fe-bcb5-7ccf5ae4ffe1/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/2b5f31f9-74e8-4ed2-bede-f737976343b8
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1075680
Signature
.NET source code contains potential unpacker
Adds a directory exclusion to Windows Defender
C2 URLs / IPs found in malware configuration
Initial sample is a PE file and has a suspicious name
Injects a PE file into a foreign processes
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
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
Uses an obfuscated file name to hide its real file extension (double extension)
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 signatures2 2 Behavior Graph ID: 708225 Sample: Factura de proforma .pdf.exe Startdate: 23/09/2022 Architecture: WINDOWS Score: 100 44 Malicious sample detected (through community Yara rule) 2->44 46 Multi AV Scanner detection for dropped file 2->46 48 Sigma detected: Scheduled temp file as task from temp location 2->48 50 11 other signatures 2->50 10 Factura de proforma .pdf.exe 7 2->10         started        process3 file4 36 C:\Users\user\AppData\...\theqYdXtzHfq.exe, PE32 10->36 dropped 38 C:\Users\user\AppData\Local\...\tmp3348.tmp, XML 10->38 dropped 40 C:\Users\...\Factura de proforma .pdf.exe.log, ASCII 10->40 dropped 54 Writes to foreign memory regions 10->54 56 Adds a directory exclusion to Windows Defender 10->56 58 Injects a PE file into a foreign processes 10->58 14 RegSvcs.exe 10->14         started        17 powershell.exe 21 10->17         started        19 schtasks.exe 1 10->19         started        signatures5 process6 signatures7 66 Modifies the context of a thread in another process (thread injection) 14->66 68 Maps a DLL or memory area into another process 14->68 70 Sample uses process hollowing technique 14->70 72 2 other signatures 14->72 21 explorer.exe 14->21 injected 25 conhost.exe 17->25         started        27 conhost.exe 19->27         started        process8 dnsIp9 42 www.chaoge730.com 21->42 52 System process connects to network (likely due to code injection or exploit) 21->52 29 WWAHost.exe 21->29         started        signatures10 process11 signatures12 60 Modifies the context of a thread in another process (thread injection) 29->60 62 Maps a DLL or memory area into another process 29->62 64 Tries to detect virtualization through RDTSC time measurements 29->64 32 cmd.exe 1 29->32         started        process13 process14 34 conhost.exe 32->34         started       
Detection:
formbook
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Link:
https://mwdb.cert.pl/sample/79e04a99e2c53eaa98af95fd0a86bddf3cc4b0f62c385cfdfa5662738007fdd1/
Threat name:
ByteCode-MSIL.Trojan.FormBook
Create hunting rule
Status:
Malicious
First seen:
2022-09-20 12:18:21 UTC
File Type:
PE (.Net Exe)
Extracted files:
18
AV detection:
20 of 26 (76.92%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=phqevgpcyu7kvgfpsx6qvbv5346mjmhwfq4fz7p2kzrhhaah7xiq._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Similar samples:
179131fddae5e6ad00f8e20140b2a916de1b25f0185e4151d450a746c1cf130c
Formbook
2e22d1469e5bc652bc2a5d4180e4ade7f280515b12546416dd9cea6ea4b2ca3b
Formbook
434877dacffb08580c061bdf1a16b2549eab40d01e4c8fc268d1831b59828799
Formbook
5c58e2edb4b7fa9a04901a73e7f34e5a93aec5703e03ec87f79b2799b7be7119
Formbook
9b30d60ee8253334584b819faeb61933b028a0767b5cd3c99f2a4d3c2d8f5aae
Formbook
bc50bd102cef75bd5e2e54618302f10459cd18f90fbbba15ffb4d7503e7e895a
Formbook
c0b433e9f4a2438b5647e9e2e236747cc55e931e46da8e52531b1c70786467d2
Formbook
c79bd4c69c806e1516f6cf2160ffa1172e074fbe652bd3793f661aaa39cccab9
Formbook
+ 15'723 additional samples on MalwareBazaar
Result
Malware family:
formbook
Create hunting rule
Score:
  10/10
Tags:
family:formbook campaign:de19 rat spyware stealer trojan
Link:
https://tria.ge/reports/220923-f5e2xadcb4/
Behaviour
Creates scheduled task(s)
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
Suspicious use of SetThreadContext
Checks computer location settings
Formbook payload
Formbook
Verdict:
Suspicious
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/efd0f31a-cb0f-4a93-a8d5-302a04e08e1f
Unpacked files
SH256 hash:
75fdcb0a5d57c9775d132096cc4ebdcb199a1b2c62627bd8954a3172eb71cf07
MD5 hash:
4a5573e5995b326833f51feebd295564
SHA1 hash:
fb79d68666810912ddde6621292c05b7bc696d86
Detections:
FormBook
Create hunting rule
win_formbook_auto
Create hunting rule
win_formbook_g0
Create hunting rule
Link:
https://www.unpac.me/results/f92048a1-08c4-469f-b5fb-0acb0f41e18e/
Parent samples :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 hash:
20eee6aabd0ca829ebd54ee4af9a141d77b34525fd1e34d9fc30e9e4e0c9a283
MD5 hash:
947b99ce8aec3d2b1b9906b23af57e78
SHA1 hash:
89cbf65992a47fe8fd3ee1b92426f1c8b8e36dc1
Link:
https://www.unpac.me/results/f92048a1-08c4-469f-b5fb-0acb0f41e18e/
SH256 hash:
3bd6a79b582839c043df21e259e95f7af208b3c178ca9ee4ac26cbad0d1f9317
MD5 hash:
57d01fee2d9f75663698f642cabce52d
SHA1 hash:
6607ba33457085a6e94e1165108743f6695fa3cc
Link:
https://www.unpac.me/results/f92048a1-08c4-469f-b5fb-0acb0f41e18e/
SH256 hash:
44c50087cbd9a86677ff5b898c1ad52abf5f25297179a174edcc8b81dec967fc
MD5 hash:
d012ba9057bf67c7f29871326f2af919
SHA1 hash:
1d5b8b512b37f0e1900496b578117082929654c7
Link:
https://www.unpac.me/results/f92048a1-08c4-469f-b5fb-0acb0f41e18e/
SH256 hash:
e20ec8f3c957bcb6a194ef688bae8af2015cfffb20e7baf8b2114d7b70ade4ee
MD5 hash:
35cb29046968faca7f3f3b4463449b6c
SHA1 hash:
088c8c30ec1bece0a4b5bbfe3982b073f8b95598
Link:
https://www.unpac.me/results/f92048a1-08c4-469f-b5fb-0acb0f41e18e/
SH256 hash:
79e04a99e2c53eaa98af95fd0a86bddf3cc4b0f62c385cfdfa5662738007fdd1
MD5 hash:
2c42cf5529ffc3f40ab696b77d01e70b
SHA1 hash:
fe001c7fc791db65cbee53c476cd47ef4357873d
Link:
https://www.unpac.me/results/f92048a1-08c4-469f-b5fb-0acb0f41e18e/
Malware family:
FormBook
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/79e04a99e2c5/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/79e04a99e2c53eaa98af95fd0a86bddf3cc4b0f62c385cfdfa5662738007fdd1

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
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 79e04a99e2c53eaa98af95fd0a86bddf3cc4b0f62c385cfdfa5662738007fdd1

(this sample)

  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/312490/

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