MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 1fa99df50d9aed6e1225bff38ac2105b3c4867cf71646d4a6fa0d930885e3dfc. 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 2 File information Comments
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SHA256 hash: 1fa99df50d9aed6e1225bff38ac2105b3c4867cf71646d4a6fa0d930885e3dfc
SHA3-384 hash: ca35a3697df46670746484d934bf18fed3a945f8ba4a6f5dc0460b3929ca24c863823b806b0e3fe7173733a7743bb326
SHA1 hash: 8d17ff9150170e3f252b4eaace87b42f058f7381
MD5 hash: 0031bc79035d8a114f0110192ce6e52c
humanhash: skylark-leopard-video-delaware
File name:freight invoice.exe
Download: download sample
Signature Formbook
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File size:608'256 bytes
First seen:2022-08-17 22:01:54 UTC
Last seen:2022-09-01 15:53:34 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'742 x AgentTesla, 19'607 x Formbook, 12'242 x SnakeKeylogger)
ssdeep 12288:Nu11R/5PU+/Sx9/WN+/6XEjwVPwGCLmL6owi2rawrvO5NSkJ:NGP8x2OGmwVwGC6Lhwi2VrG5NP
TLSH T124D41215377BCE36CA6D267684D645040375F703D4ABD74F3ECE22E84A22BC84AA5B87
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 James_inthe_box
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
5
# of downloads :
299
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
formbook
Create hunting rule
ID:
1
File name:
freight invoice.exe
Verdict:
Malicious activity
Analysis date:
2022-08-17 22:05:16 UTC
Tags:
formbook trojan stealer
Link:
https://app.any.run/tasks/b6a33841-5cae-41e9-8f54-84d60ec3508c

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/299406/
Detection(s):
SecuriteInfo.com.W32.AIDetectNet.01.12627.30770.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Sending a custom TCP request
Launching a process
Creating a process with a hidden window
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
packed
Link:
https://www.filescan.io/uploads/62fd65b6eeda089236a16ce3/reports/4f4c8977-be07-4a68-abfb-7ac1e775884a/overview
Result
Verdict:
UNKNOWN
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/dfa998d8-4829-47a5-a8c9-8dc4bbd5e1b8
Result
Threat name:
FormBook
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Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1053392
Signature
.NET source code contains potential unpacker
Adds a directory exclusion to Windows Defender
Antivirus detection for URL or domain
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
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
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
Uses schtasks.exe or at.exe to add and modify task schedules
Yara detected AntiVM3
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 685909 Sample: freight invoice.exe Startdate: 18/08/2022 Architecture: WINDOWS Score: 100 60 Snort IDS alert for network traffic 2->60 62 Malicious sample detected (through community Yara rule) 2->62 64 Antivirus detection for URL or domain 2->64 66 14 other signatures 2->66 10 freight invoice.exe 7 2->10         started        process3 file4 40 C:\Users\user\AppData\...40QUTVbUNGc.exe, PE32 10->40 dropped 42 C:\Users\...42QUTVbUNGc.exe:Zone.Identifier, ASCII 10->42 dropped 44 C:\Users\user\AppData\Local\...\tmpE5E1.tmp, XML 10->44 dropped 46 C:\Users\user\...\freight invoice.exe.log, ASCII 10->46 dropped 70 Adds a directory exclusion to Windows Defender 10->70 72 Injects a PE file into a foreign processes 10->72 14 freight invoice.exe 10->14         started        17 powershell.exe 25 10->17         started        19 powershell.exe 24 10->19         started        21 schtasks.exe 1 10->21         started        signatures5 process6 signatures7 74 Modifies the context of a thread in another process (thread injection) 14->74 76 Maps a DLL or memory area into another process 14->76 78 Sample uses process hollowing technique 14->78 80 Queues an APC in another process (thread injection) 14->80 23 explorer.exe 14->23 injected 27 conhost.exe 17->27         started        29 conhost.exe 19->29         started        31 conhost.exe 21->31         started        process8 dnsIp9 48 www.hocseohanoi.com 122.10.64.201, 49785, 80 DXTL-HKDXTLTseungKwanOServiceHK Hong Kong 23->48 50 www.tamplariedanielnica.net 185.129.100.127, 49752, 80 DDOS-GUARDRU Russian Federation 23->50 52 6 other IPs or domains 23->52 68 System process connects to network (likely due to code injection or exploit) 23->68 33 rundll32.exe 23->33         started        signatures10 process11 signatures12 54 Modifies the context of a thread in another process (thread injection) 33->54 56 Maps a DLL or memory area into another process 33->56 58 Tries to detect virtualization through RDTSC time measurements 33->58 36 cmd.exe 33->36         started        process13 process14 38 conhost.exe 36->38         started       
Detection:
formbook
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Link:
https://mwdb.cert.pl/sample/1fa99df50d9aed6e1225bff38ac2105b3c4867cf71646d4a6fa0d930885e3dfc/
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
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Status:
Malicious
First seen:
2022-08-17 20:30:43 UTC
File Type:
PE (.Net Exe)
Extracted files:
12
AV detection:
23 of 26 (88.46%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=d6uz35intlww4erfx7zyvqqqlm6eqz6pofsg2stpudmtbcc6hx6a._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:o85a rat spyware stealer trojan
Link:
https://tria.ge/reports/220817-1xscgsdcej/
Behaviour
Creates scheduled task(s)
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
Deletes itself
Formbook payload
Formbook
Unpacked files
SH256 hash:
3b24bbfee3565a866f8ca1c97c522f89f639db78d100a1b4624ae4c7f0e20f85
MD5 hash:
e899386905a6a4bbf58dba3be151fd35
SHA1 hash:
a047e3e077d60f29b0a97029afa5025c4aa05e5d
Detections:
FormBook
Create hunting rule
win_formbook_g0
Create hunting rule
win_formbook_auto
Create hunting rule
Link:
https://www.unpac.me/results/136f1667-364d-403f-8572-45bf49091388/
Parent samples :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 hash:
551ef0181260a5ab5728a618c2e86443753aaeb425e6c3b1346dfb0a661c73af
MD5 hash:
3c7205139e6aabd7de040b15021c24ed
SHA1 hash:
e4c66e4ca1bb3b5488d7c4ba7fddc8cac118955f
Link:
https://www.unpac.me/results/136f1667-364d-403f-8572-45bf49091388/
SH256 hash:
0f2874a6edb855fad925749f2353d8dad20d8bad716f3b5b96ee66f8c59e56ee
MD5 hash:
a0c8cf146b871c266c7d6a596ada603e
SHA1 hash:
d16271347e34d51408d5a0e78e09f2d0907d8549
Link:
https://www.unpac.me/results/136f1667-364d-403f-8572-45bf49091388/
SH256 hash:
cf364872b7c041a2eea14d4f13399b22012154be65236a3b0062cf6c118303a4
MD5 hash:
e279e25cd5ab7488ce3ebcf4f38da539
SHA1 hash:
7396c0ea773bdda3aa758998dfaad779e5200821
Link:
https://www.unpac.me/results/136f1667-364d-403f-8572-45bf49091388/
SH256 hash:
9b4aee132a0228378d66a57fda3a2030952309ef74cf2db724ac916b04d8c034
MD5 hash:
93c6391d23c1aa1ed66fb13f82f2ee31
SHA1 hash:
220098c3047c32b51ae13a5cc1e9beeef3da6e18
Link:
https://www.unpac.me/results/136f1667-364d-403f-8572-45bf49091388/
SH256 hash:
1fa99df50d9aed6e1225bff38ac2105b3c4867cf71646d4a6fa0d930885e3dfc
MD5 hash:
0031bc79035d8a114f0110192ce6e52c
SHA1 hash:
8d17ff9150170e3f252b4eaace87b42f058f7381
Link:
https://www.unpac.me/results/136f1667-364d-403f-8572-45bf49091388/
Malware family:
FormBook
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Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/1fa99df50d9a/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/1fa99df50d9aed6e1225bff38ac2105b3c4867cf71646d4a6fa0d930885e3dfc

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

zip 0ffb84ede741420a6e0c311afa540d11f50c0084b4609c79fa68595f12d7bcc0

Formbook

Executable exe 1fa99df50d9aed6e1225bff38ac2105b3c4867cf71646d4a6fa0d930885e3dfc

(this sample)

  
Delivery method
Other
Cape
Cape
https://www.capesandbox.com/analysis/299406/
  
Dropped by
SHA256 0ffb84ede741420a6e0c311afa540d11f50c0084b4609c79fa68595f12d7bcc0
  
Dropped by
MD5 0565e9e5bdd967546626633a7bad1ff2

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