MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 8a10ba003c94b5e6576d10a0c4bd01cabef6d87e4811e96c1a028e2cde63f414. 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


Intelligence 9 IOCs YARA File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 8a10ba003c94b5e6576d10a0c4bd01cabef6d87e4811e96c1a028e2cde63f414
SHA3-384 hash: e9ac4ccedddc43a0149a8b886b673501c32d4753d16e55e7e44eb50f39d9dad8cc35d9632321d897e0842394ef35d244
SHA1 hash: b17a81d003cc752cefec90ca22428087107fae9c
MD5 hash: 81f33dbac4ab7bf145b4c3b1ed7b5209
humanhash: tennessee-east-delta-uniform
File name:4lUYEgxklxdg3aJ.exe
Download: download sample
Signature FormBook
Create hunting rule
File size:464'896 bytes
First seen:2020-08-19 11:31:28 UTC
Last seen:2020-08-21 21:06:43 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'652 x AgentTesla, 19'463 x Formbook, 12'204 x SnakeKeylogger)
ssdeep 12288:5MyydFFqy5uC9YdW1cUrsMGVJF33vXeu79ijfMH260i:UdmiuSCjXMGXFPt79ije29
Threatray 2'273 similar samples on MalwareBazaar
TLSH A9A412422A859F79C97D27B89822001507F26E1AF331EE6DBF9C31F81577FA183A5903
Reporter abuse_ch
Tags:exe FormBook


Avatar
abuse_ch
Malspam distributing FormBook:

HELO: alnassar.com.sa
Sending IP: 162.244.93.110
From: Ozyurtlr <nmerkez@ozyurtlar.com>
Reply-To: poc@ozyurtlar.com
Subject: P_Ooder18082020
Attachment: oder18082020.zip (contains "4lUYEgxklxdg3aJ.exe")

Intelligence

File Origin
# of uploads :
4
# of downloads :
112
Origin country :
n/a
Vendor Threat Intelligence
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/48462/
Detection(s):
SecuriteInfo.com.Trojan.Inject3.51964.32442.2385.UNOFFICIAL
Create hunting rule

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
Creating a file in the %AppData% subdirectories
Reading critical registry keys
Launching cmd.exe command interpreter
Unauthorized injection to a system process
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/437726
Signature
.NET source code contains potential unpacker
Binary contains a suspicious time stamp
Detected FormBook malware
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)
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
Tries to harvest and steal browser information (history, passwords, etc)
Tries to steal Mail credentials (via file access)
Yara detected AntiVM_3
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 271373 Sample: 4lUYEgxklxdg3aJ.exe Startdate: 20/08/2020 Architecture: WINDOWS Score: 100 36 www.hotgirlswonderfulvideo.site 2->36 40 Snort IDS alert for network traffic (e.g. based on Emerging Threat rules) 2->40 42 Malicious sample detected (through community Yara rule) 2->42 44 Yara detected AntiVM_3 2->44 46 6 other signatures 2->46 9 4lUYEgxklxdg3aJ.exe 3 2->9         started        signatures3 process4 file5 28 C:\Users\user\...\4lUYEgxklxdg3aJ.exe.log, ASCII 9->28 dropped 56 Tries to detect virtualization through RDTSC time measurements 9->56 58 Injects a PE file into a foreign processes 9->58 13 4lUYEgxklxdg3aJ.exe 9->13         started        signatures6 process7 signatures8 60 Modifies the context of a thread in another process (thread injection) 13->60 62 Maps a DLL or memory area into another process 13->62 64 Sample uses process hollowing technique 13->64 66 Queues an APC in another process (thread injection) 13->66 16 explorer.exe 13->16 injected process9 dnsIp10 30 www.regulars6.com 162.213.255.196, 49743, 49744, 49745 NAMECHEAP-NETUS United States 16->30 32 kctrendstars.com 34.102.136.180, 49746, 49747, 49748 GOOGLEUS United States 16->32 34 2 other IPs or domains 16->34 38 System process connects to network (likely due to code injection or exploit) 16->38 20 cmd.exe 17 16->20         started        signatures11 process12 file13 24 C:\Users\user\AppData\...\349logrv.ini, data 20->24 dropped 26 C:\Users\user\AppData\...\349logri.ini, data 20->26 dropped 48 Detected FormBook malware 20->48 50 Tries to steal Mail credentials (via file access) 20->50 52 Tries to harvest and steal browser information (history, passwords, etc) 20->52 54 3 other signatures 20->54 signatures14
Detection:
formbook
Create hunting rule
Link:
https://mwdb.cert.pl/sample/8a10ba003c94b5e6576d10a0c4bd01cabef6d87e4811e96c1a028e2cde63f414/
Threat name:
ByteCode-MSIL.Trojan.FormBook
Create hunting rule
Status:
Malicious
First seen:
2020-08-18 13:28:46 UTC
AV detection:
25 of 29 (86.21%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=riiluab4ss26mv3nccqmjpibzk7pnwd6jai6s3a2akhczxtd6qka._file
Verdict:
malicious
Similar samples:
11ed9b9e406c0dd0f8eebc68a84ed4790d73d051584206acce260627390ec049
FormBook
30d3cf43f91eea8df889ee14337ca8067bc68521ff63184c679aac80b321bb75
FormBook
478dce496a9eca179f7503d76fa70a27d85e2e8547b81b5c80fc7433122085c3
FormBook
59793c1ac9d8537e06996b0a09f161deb98a77d527b0bc97b18e15972f120a2d
FormBook
9e31a9eedd25bd1b57d01f6f9f265cf5d13218f3e3e1866128d061ba5c77c452
FormBook
b5cfea4c983458975c376cb9ff0ebd5feb4a426dc83c9db60264678a43eef6e9
FormBook
bf694824d6cbf6fba77ce087678b03ee8243a245b4b730eb55fb83e83b8dff8e
FormBook
d2b880fc3d1f874e31d23a37b38f75ceb1162c21ce895aec8dbec7f9c952f8f2
FormBook
e224e30554ce3a83c6ef2ca1c81b50ca377486f55bed19078658578bbef844f0
FormBook
f7321d982e89fafff68c30ca74dbc1612466c4385a51a0a7b203641e31b27c26
FormBook
+ 2'263 additional samples on MalwareBazaar
Result
Malware family:
formbook
Create hunting rule
Score:
  10/10
Tags:
rat trojan spyware stealer family:formbook
Link:
https://tria.ge/reports/200819-43g5gm8rne/
Behaviour
Enumerates system info in registry
Modifies Internet Explorer settings
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
Reads user/profile data of web browsers
Formbook Payload
Formbook
Malware Config
C2 Extraction:
http://www.regulars6.com/w5fk/
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Kryptik
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/8a10ba003c94b5e6576d10a0c4bd01cabef6d87e4811e96c1a028e2cde63f414

File information

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

Malspam

FormBook

zip f771b5ad12d212d2d77c574b5349f01786f9c0ea1529052a1fdc26ee1f40ff2e

FormBook

Executable exe 8a10ba003c94b5e6576d10a0c4bd01cabef6d87e4811e96c1a028e2cde63f414

(this sample)

  
Dropped by
MD5 fc71a611823bf3a749b7f055fc75bde6
  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/48462/
  
Dropped by
SHA256 f771b5ad12d212d2d77c574b5349f01786f9c0ea1529052a1fdc26ee1f40ff2e

Comments