MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 c1a6e1cdb47df8fdaea4c501aeef551c5608735a82078d2b32229570cb1c44af. 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: 11


Intelligence 11 IOCs YARA File information Comments

SHA256 hash: c1a6e1cdb47df8fdaea4c501aeef551c5608735a82078d2b32229570cb1c44af
SHA3-384 hash: accb4a1bf1ac45e16b0d7335bdfcc29a573e1ea1f7d86d014ba68771c6682999e11cea254db151b465a00b58697f2d78
SHA1 hash: 34465f6dfbd746d9a686f929c4aaa8cd6a64ec8b
MD5 hash: c9f7d4a9726cf40c049a1955c5169dc2
humanhash: may-single-glucose-sixteen
File name:ST10501909262401.exe
Download: download sample
Signature Formbook
File size:524'800 bytes
First seen:2020-10-19 18:14:01 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'653 x AgentTesla, 19'464 x Formbook, 12'205 x SnakeKeylogger)
ssdeep 12288:jO3FPI0878frkqZoiH8oy/JRlPGfwYTtvUnj92EHOtn9J9I:jGFPYADnryXlPGfwYTtM8fJ
Threatray 2'539 similar samples on MalwareBazaar
TLSH 7DB4F12036899F44E03D737B3066113053F3A892C795EE1D7FE577FA0422F546AA2A6E
Reporter abuse_ch
Tags:exe FormBook


Avatar
abuse_ch
Malspam distributing unidentified malware:

HELO: smtp99.iad3a.emailsrvr.com
Sending IP: 173.203.187.99
From: Husaein Ebshy <hussein.hassan@cbq.qa>
Subject: Confirming - Notice of payment
Attachment: ST10501909262401.pdf.zip (contains "ST10501909262401.exe")

Intelligence


File Origin
# of uploads :
1
# of downloads :
91
Origin country :
n/a
Vendor Threat Intelligence
Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Sending a UDP request
Unauthorized injection to a recently created process
Creating a file
Launching a process
Launching cmd.exe command interpreter
Unauthorized injection to a system process
Result
Threat name:
FormBook
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Signature
.NET source code contains potential unpacker
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 (e.g. based on Emerging Threat rules)
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 ipconfig to lookup or modify the Windows network settings
Yara detected AntiVM_3
Yara detected FormBook
Behaviour
Behavior Graph:
behaviorgraph top1 signatures2 2 Behavior Graph ID: 300392 Sample: ST10501909262401.exe Startdate: 19/10/2020 Architecture: WINDOWS Score: 100 36 Snort IDS alert for network traffic (e.g. based on Emerging Threat rules) 2->36 38 Malicious sample detected (through community Yara rule) 2->38 40 Multi AV Scanner detection for submitted file 2->40 42 7 other signatures 2->42 10 ST10501909262401.exe 3 2->10         started        process3 file4 28 C:\Users\user\...\ST10501909262401.exe.log, ASCII 10->28 dropped 52 Tries to detect virtualization through RDTSC time measurements 10->52 54 Injects a PE file into a foreign processes 10->54 14 ST10501909262401.exe 10->14         started        signatures5 process6 signatures7 56 Modifies the context of a thread in another process (thread injection) 14->56 58 Maps a DLL or memory area into another process 14->58 60 Sample uses process hollowing technique 14->60 62 Queues an APC in another process (thread injection) 14->62 17 explorer.exe 14->17 injected process8 dnsIp9 30 worstcasebestcase.com 34.102.136.180, 49752, 49766, 49767 GOOGLEUS United States 17->30 32 ahrmj.com 104.164.35.96, 49765, 80 EGIHOSTINGUS United States 17->32 34 6 other IPs or domains 17->34 44 System process connects to network (likely due to code injection or exploit) 17->44 21 ipconfig.exe 17->21         started        signatures10 process11 signatures12 46 Modifies the context of a thread in another process (thread injection) 21->46 48 Maps a DLL or memory area into another process 21->48 50 Tries to detect virtualization through RDTSC time measurements 21->50 24 cmd.exe 1 21->24         started        process13 process14 26 conhost.exe 24->26         started       
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
Status:
Malicious
First seen:
2020-10-19 12:32:29 UTC
AV detection:
23 of 29 (79.31%)
Threat level:
  5/5
Result
Malware family:
formbook
Score:
  10/10
Tags:
rat trojan spyware stealer family:formbook
Behaviour
Enumerates system info in registry
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of FindShellTrayWindow
Suspicious use of SendNotifyMessage
Suspicious use of WriteProcessMemory
Suspicious use of SetThreadContext
Deletes itself
Formbook Payload
Formbook
Malware Config
C2 Extraction:
http://www.jsbdistributor.com/u2e/
Unpacked files
SH256 hash:
8cdfc43390780d83d17272293cc75bdf4b68f16626a68bc23846558e69cbbe40
MD5 hash:
1ddfa1ae9abf8ad451b3c0fa74b29f17
SHA1 hash:
424a9432b5f52d5864a33b5b9d6a6cd862c58664
SH256 hash:
b4f55462558ef819cfa16db6cac0a8077a2b3deee7bdc7adeeaffe82299e1581
MD5 hash:
8f7c3b29822871ea084c1df26586369e
SHA1 hash:
e1e8fc51d72aa1ee29dc39ecbde05f39c76adf56
SH256 hash:
bac5797bde4b2810766a40d95bcdb825ac5b395fcbadd139daa19a44a6cdc049
MD5 hash:
a92cc1f6e0a2742350dfda6726db14c0
SHA1 hash:
e5404e3ed46498deb8ad8966a774540c2b8e9c1e
SH256 hash:
179d335f44008730a1be4841466bc8ad8c15f6aa3c6394f06db7bb5902331caf
MD5 hash:
e2a95360c9d5c2471689758d3b77e4d2
SHA1 hash:
ac6fd6bd02bf0989a58efcd62bd741d6ad5e92b1
Detections:
win_formbook_g0 win_formbook_auto
SH256 hash:
c1a6e1cdb47df8fdaea4c501aeef551c5608735a82078d2b32229570cb1c44af
MD5 hash:
c9f7d4a9726cf40c049a1955c5169dc2
SHA1 hash:
34465f6dfbd746d9a686f929c4aaa8cd6a64ec8b
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.

Malspam

Formbook

Executable exe c1a6e1cdb47df8fdaea4c501aeef551c5608735a82078d2b32229570cb1c44af

(this sample)

  
Delivery method
Distributed via e-mail attachment

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