MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 c79a75bdb7f50439434aef1de18f5eaa857b9c0affd00f8e40ef85348df6cf57. 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: 10


Intelligence 10 IOCs YARA File information Comments

SHA256 hash: c79a75bdb7f50439434aef1de18f5eaa857b9c0affd00f8e40ef85348df6cf57
SHA3-384 hash: 6a9f44870f08a52da8fd576041d9417f6acbd805d919a016c45a56d6b905ab9370045ec2a633ee7b959b438036642aaa
SHA1 hash: dd1e38c7dcaddd66f0bf79b3be047afed2773901
MD5 hash: 3f4742e81a0164ade93a7be29666511f
humanhash: vegan-idaho-single-yellow
File name:Transfer Form Doc.exe
Download: download sample
Signature Formbook
File size:788'480 bytes
First seen:2020-07-17 13:55:11 UTC
Last seen:2020-07-17 15:11:45 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'650 x AgentTesla, 19'462 x Formbook, 12'203 x SnakeKeylogger)
ssdeep 12288:rrMnqjzGYIdjMxMSo15GXacXYp3uyAjrMnnmV2k4zUIK4F3Zl389tH11FWp7DlIM:rrvxguwcLjr2K4F/89tH11F27
Threatray 5'127 similar samples on MalwareBazaar
TLSH F8F418F7974D82C2C4AF9EBCC48207710997ED85F0F9A60B03667C3636767A0E88556B
Reporter James_inthe_box
Tags:exe FormBook

Intelligence


File Origin
# of uploads :
2
# of downloads :
81
Origin country :
n/a
Vendor Threat Intelligence
Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Unauthorized injection to a recently created process
Connection attempt to an infection source
Result
Threat name:
FormBook
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Signature
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
Sigma detected: Scheduled temp file as task from temp location
Tries to detect virtualization through RDTSC time measurements
Uses schtasks.exe or at.exe to add and modify task schedules
Yara detected FormBook
Behaviour
Behavior Graph:
behaviorgraph top1 signatures2 2 Behavior Graph ID: 246734 Sample: Transfer Form Doc.exe Startdate: 19/07/2020 Architecture: WINDOWS Score: 100 45 Malicious sample detected (through community Yara rule) 2->45 47 Multi AV Scanner detection for dropped file 2->47 49 Sigma detected: Scheduled temp file as task from temp location 2->49 51 7 other signatures 2->51 10 Transfer Form Doc.exe 7 2->10         started        process3 file4 31 C:\Users\user\AppData\Roaming\kBLmdzHF.exe, PE32 10->31 dropped 33 C:\Users\...\kBLmdzHF.exe:Zone.Identifier, ASCII 10->33 dropped 35 C:\Users\user\AppData\Local\...\tmpE52B.tmp, XML 10->35 dropped 37 C:\Users\user\...\Transfer Form Doc.exe.log, ASCII 10->37 dropped 59 Injects a PE file into a foreign processes 10->59 14 Transfer Form Doc.exe 10->14         started        17 schtasks.exe 1 10->17         started        signatures5 process6 signatures7 61 Modifies the context of a thread in another process (thread injection) 14->61 63 Maps a DLL or memory area into another process 14->63 65 Sample uses process hollowing technique 14->65 67 Queues an APC in another process (thread injection) 14->67 19 explorer.exe 14->19 injected 22 conhost.exe 17->22         started        process8 dnsIp9 39 www.thongsgalore.store 19->39 41 www.stutsietdburg.info 19->41 43 2 other IPs or domains 19->43 24 cmd.exe 19->24         started        process10 signatures11 53 Modifies the context of a thread in another process (thread injection) 24->53 55 Maps a DLL or memory area into another process 24->55 57 Tries to detect virtualization through RDTSC time measurements 24->57 27 cmd.exe 1 24->27         started        process12 process13 29 conhost.exe 27->29         started       
Threat name:
ByteCode-MSIL.Trojan.Masslogger
Status:
Malicious
First seen:
2020-07-17 09:21:25 UTC
File Type:
PE (.Net Exe)
Extracted files:
2
AV detection:
24 of 28 (85.71%)
Threat level:
  5/5
Result
Malware family:
formbook
Score:
  10/10
Tags:
evasion trojan spyware stealer family:formbook persistence
Behaviour
Suspicious use of AdjustPrivilegeToken
Suspicious behavior: EnumeratesProcesses
Suspicious use of FindShellTrayWindow
Suspicious use of SendNotifyMessage
Modifies Internet Explorer settings
Creates scheduled task(s)
Suspicious use of WriteProcessMemory
Suspicious behavior: MapViewOfSection
Drops file in Program Files directory
Suspicious use of SetThreadContext
Checks whether UAC is enabled
Adds Run key to start application
Reads user/profile data of web browsers
Deletes itself
Formbook
Please note that we are no longer able to provide a coverage score for Virus Total.

File information


The table below shows additional information about this malware sample such as delivery method and external references.

  
Delivery method
Other

Comments