MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 f4156e15b465020e6687a23a63eb4b7c84a18f90ead4665087c6c2e5a09b455d. 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
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: f4156e15b465020e6687a23a63eb4b7c84a18f90ead4665087c6c2e5a09b455d
SHA3-384 hash: 02d4ae9f7dbf30e2d7b5749e7c1bb6021231824e871f5fc97801add8e20eaca9780f7a469d7b4f155a68b60d22bdc809
SHA1 hash: 4c752327d2e9d1118e5daae6100dbeaceecfc987
MD5 hash: f28ec13e3098402bc68fea894fd99053
humanhash: five-single-delta-finch
File name:caietul de sarcini.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:808'960 bytes
First seen:2020-09-01 04:48:54 UTC
Last seen:2020-09-01 05:43:31 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 24576:Y867a7Muv6cTPNxUfMS61pvXf3SZ6Enn68ac:r8BINSf76T//SZ7n689
Threatray 2'280 similar samples on MalwareBazaar
TLSH 4605DF13531E9B2ED81873B9349040DCE2B16F82EF38E1D8EE4B31EA546624DB5DD693
Reporter abuse_ch
Tags:exe FormBook geo ROU


Avatar
abuse_ch
Malspam distributing unidentified malware:

HELO: host2.himbimarket.com
Sending IP: 72.52.244.66
From: Gabriel Ionescu <office@infiintarisocietati.ro>
Subject: Re: Re: caietul de sarcini al comenzii
Attachment: caietul de sarcini.zip (contains "caietul de sarcini.exe")

Intelligence

File Origin
# of uploads :
2
# of downloads :
175
Origin country :
n/a
Vendor Threat Intelligence
Detection:
Formbook
Create hunting rule
Link:
https://www.capesandbox.com/analysis/53787/
Detection(s):
SecuriteInfo.com.Trojan.Packed2.42555.11407.590.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Sending a UDP request
Creating a file
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/456124
Signature
Allocates memory in foreign processes
Creates an undocumented autostart registry key
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)
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
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
Writes to foreign memory regions
Yara detected AntiVM_3
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 280443 Sample: caietul de sarcini.exe Startdate: 01/09/2020 Architecture: WINDOWS Score: 100 51 Malicious sample detected (through community Yara rule) 2->51 53 Multi AV Scanner detection for dropped file 2->53 55 Sigma detected: Scheduled temp file as task from temp location 2->55 57 8 other signatures 2->57 10 caietul de sarcini.exe 7 2->10         started        process3 file4 37 C:\Users\user\AppData\...\oHtylzPIaQr.exe, PE32 10->37 dropped 39 C:\Users\...\oHtylzPIaQr.exe:Zone.Identifier, ASCII 10->39 dropped 41 C:\Users\user\AppData\Local\...\tmp3C69.tmp, XML 10->41 dropped 43 C:\Users\user\...\caietul de sarcini.exe.log, ASCII 10->43 dropped 69 Writes to foreign memory regions 10->69 71 Allocates memory in foreign processes 10->71 73 Injects a PE file into a foreign processes 10->73 14 RegSvcs.exe 10->14         started        17 schtasks.exe 1 10->17         started        signatures5 process6 signatures7 75 Modifies the context of a thread in another process (thread injection) 14->75 77 Maps a DLL or memory area into another process 14->77 79 Sample uses process hollowing technique 14->79 81 2 other signatures 14->81 19 explorer.exe 14->19 injected 23 conhost.exe 17->23         started        process8 dnsIp9 45 www.loulancaster.com 19->45 47 www.getawomantodoit.com 19->47 49 2 other IPs or domains 19->49 59 System process connects to network (likely due to code injection or exploit) 19->59 25 cmd.exe 1 17 19->25         started        signatures10 process11 file12 33 C:\Users\user\AppData\...\453logrv.ini, data 25->33 dropped 35 C:\Users\user\AppData\...\453logri.ini, data 25->35 dropped 61 Detected FormBook malware 25->61 63 Creates an undocumented autostart registry key 25->63 65 Tries to steal Mail credentials (via file access) 25->65 67 4 other signatures 25->67 29 cmd.exe 1 25->29         started        signatures13 process14 process15 31 conhost.exe 29->31         started       
Detection:
formbook
Create hunting rule
Link:
https://mwdb.cert.pl/sample/f4156e15b465020e6687a23a63eb4b7c84a18f90ead4665087c6c2e5a09b455d/
Threat name:
ByteCode-MSIL.Trojan.FormBook
Create hunting rule
Status:
Malicious
First seen:
2020-08-31 07:41:29 UTC
AV detection:
24 of 29 (82.76%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=6qkw4fnumuba4zuhui5gh22lpsckdd4q5lkgmuehy3bolie3ivoq._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Similar samples:
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Formbook
0ca1f0a08b7a21079683beeaf8bfa86df3d396b8d7a0cade52e963b78bd9a7e3
Formbook
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1d433633d08421004a24c04b8a6a05b9c19afde22e6869c82f9cbe6aaad568fd
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3d009dd1124fdf76e4a5284fa421d54a0ec663abc1517bbf95c809bb36dd8863
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8846c5d088724ae06915e0e0f987ca3a65fba368095bc73f3109f6cb7841318b
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8d2625935b4f6a1a8f1698ec24d609319f9f1f86811e1e36f198e9467c3103b7
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8fc4747ee4e9b358ddd1dffff19b0b3f5166e8b4ef15257be68d3fa2decb347e
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9c62e75f2dc168671bddfe8cad2b102197c10d9039d8917a7637585ff603dbdd
Formbook
e29e9d9beb5ce8187decf038cdc0b1d3102b4cfe43715a3b4f934098a943ebed
Formbook
+ 2'270 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/200901-3eg7323322/
Behaviour
Creates scheduled task(s)
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
Formbook Payload
Formbook
Malware Config
C2 Extraction:
http://www.fex-tracks.com/kvsz/
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/f4156e15b465020e6687a23a63eb4b7c84a18f90ead4665087c6c2e5a09b455d

File information

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

Malspam

Formbook

zip fea591c91f4db5a9238525988d1844cf9d68331b4cf4425acedff0fb9fb9b2d7

Formbook

Executable exe f4156e15b465020e6687a23a63eb4b7c84a18f90ead4665087c6c2e5a09b455d

(this sample)

  
Dropped by
MD5 c6d9b9f4525c166f772f738eb245b5ab
  
Delivery method
Distributed via e-mail attachment
  
Dropped by
SHA256 fea591c91f4db5a9238525988d1844cf9d68331b4cf4425acedff0fb9fb9b2d7
Cape
Cape
https://www.capesandbox.com/analysis/53787/

Comments