MalwareBazaar Database
You are currently viewing the MalwareBazaar entry for SHA256 dfb621588ae460ad55e4c5df59560023c7a87327c85f23b6fb9ee322c6488eec. 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: 9
| SHA256 hash: | dfb621588ae460ad55e4c5df59560023c7a87327c85f23b6fb9ee322c6488eec |
|---|---|
| SHA3-384 hash: | 06f8dbf124b51bc63a6677f39a8213739890461cbe7de56b79b551adf1d8c65c76f3aaa34447b463d87ad234f6457fdc |
| SHA1 hash: | 26779f8b750e02de2757a438aae2888e7828db9b |
| MD5 hash: | 0679f7b72bd236baf2532eb18adc2ffc |
| humanhash: | princess-may-echo-fix |
| File name: | ZHANG 2109374.exe |
| Download: | download sample |
| Signature | FormBook |
| File size: | 585'728 bytes |
| First seen: | 2020-08-08 08:17:33 UTC |
| Last seen: | 2020-08-08 08:55:00 UTC |
| File type: |  exe |
| MIME type: | application/x-dosexec |
| imphash | f34d5f2d4577ed6d9ceec516c1f5a744 (48'652 x AgentTesla, 19'463 x Formbook, 12'204 x SnakeKeylogger) |
| ssdeep | 12288:ZwFKuDX5TAuvQSSVYWVBhL3vDt0aJiLSZd3grpiA35gkJQVSu6b:65cuQ7GW3hL3vDt0aJfAQA3v |
| Threatray | 11'932 similar samples on MalwareBazaar |
| TLSH | 4CC4BE98769DBB8DC0E6CEF505783C00962079975A2AF3472843126D4F1DBC5DA1BBE3 |
| Reporter |  abuse_ch |
| Tags: | exe FormBook Yahoo |
abuse_ch
Malspam distributing FormBook:HELO: sonic307-2.consmr.mail.bf2.yahoo.com
Sending IP: 74.6.134.41
From: wellam test-user <t_wellam2@yahoo.com>
Reply-To: t_wellam2@yahoo.com
Subject: HELLO
Attachment: ZHANG 2109374.rar (contains "ZHANG 2109374.exe")
Intelligence
File Origin
# of uploads :
2
# of downloads :
112
Origin country :
n/a
Vendor Threat Intelligence
Detection:
n/a
Result
Verdict:
Malware
Maliciousness:
Behaviour
Creating a window
Sending a UDP request
Creating a file in the %AppData% directory
Creating a file in the %temp% directory
Launching a process
Creating a process with a hidden window
Deleting a recently created file
Unauthorized injection to a recently created process
Creating a file
Enabling autorun by creating a file
Unauthorized injection to a system process
Result
Threat name:
FormBook
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Signature
Contains functionality to check if a debugger is running (CheckRemoteDebuggerPresent)
Detected FormBook malware
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)
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
Tries to harvest and steal browser information (history, passwords, etc)
Tries to steal Mail credentials (via file access)
Uses schtasks.exe or at.exe to add and modify task schedules
Yara detected AntiVM_3
Yara detected FormBook
Behaviour
Behavior Graph:
Detection:
formbook
Threat name:
ByteCode-MSIL.Trojan.Kryptik
Status:
Malicious
First seen:
2020-08-08 08:19:06 UTC
AV detection:
24 of 29 (82.76%)
Threat level:
5/5
Detection(s):
Malicious file
Verdict:
malicious
Similar samples:
+ 11'922 additional samples on MalwareBazaar
Result
Malware family:
formbook
Score:
10/10
Tags:
rat trojan spyware stealer family:formbook evasion
Behaviour
Suspicious behavior: MapViewOfSection
Suspicious use of FindShellTrayWindow
Modifies Internet Explorer settings
Suspicious use of SendNotifyMessage
Creates scheduled task(s)
Suspicious use of AdjustPrivilegeToken
Suspicious behavior: EnumeratesProcesses
Suspicious use of WriteProcessMemory
Suspicious use of SetThreadContext
Checks whether UAC is enabled
Reads user/profile data of web browsers
Formbook Payload
Formbook
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Malicious File
Score:
1.00
File information
The table below shows additional information about this malware sample such as delivery method and external references.
Malspam
Delivery method
Distributed via e-mail attachment
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