MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 25d92375393afe6b1c651fc1dc839887086a9329f0debf6b93411afb9e23e129. 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: 13


Intelligence 13 IOCs YARA 3 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 25d92375393afe6b1c651fc1dc839887086a9329f0debf6b93411afb9e23e129
SHA3-384 hash: c8a25b52e025684150fea066868aac49f1f43ab692ed02e67849a0f2e902cf3620dd1d938f36e0074cdad1574826207d
SHA1 hash: 0f0be4ed03cf1ee08a9f3ace3c46794db346f3f1
MD5 hash: d5a0368b56f847f752cb5211316298a8
humanhash: eighteen-uniform-carpet-fish
File name:Copy!!!.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:659'456 bytes
First seen:2022-06-20 05:58:03 UTC
Last seen:2022-06-20 06:42:03 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'663 x AgentTesla, 19'478 x Formbook, 12'208 x SnakeKeylogger)
ssdeep 12288:fAndR43l4IPJxzsTDgN1PGCgL07R93qsc6s+HQiuOWY+:V3lPPbzIgrDB7
TLSH T151E4594CB22C31DFE446D635CA682D249610287E725BC3D6B0633A5FAD5CB939A334B7
TrID 72.5% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
10.4% (.EXE) Win64 Executable (generic) (10523/12/4)
6.5% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
4.4% (.EXE) Win32 Executable (generic) (4505/5/1)
2.0% (.EXE) OS/2 Executable (generic) (2029/13)
File icon (PE):PE icon
dhash icon 6dd2d312dbc8cc49 (94 x Formbook, 5 x AgentTesla)
Reporter cocaman
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
2
# of downloads :
244
Origin country :
n/a
Vendor Threat Intelligence
Detection:
Formbook
Create hunting rule
Link:
https://www.capesandbox.com/analysis/281430/
Detection(s):
SecuriteInfo.com.W32.AIDetectNet.01.14459.14681.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Sending a custom TCP request
Unauthorized injection to a recently created process
Creating a file
Launching a process
Сreating synchronization primitives
Launching cmd.exe command interpreter
Searching for synchronization primitives
Reading critical registry keys
Setting browser functions hooks
Unauthorized injection to a system process
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
50%
Tags:
packed
Link:
https://www.filescan.io/uploads/62b00cabf4dd1ffb77a2b67e/reports/300e1ee1-9916-4b17-aa5c-88bd583610df/overview
Result
Verdict:
UNKNOWN
Details
Windows PE Executable
Found a Windows Portable Executable (PE) binary. Depending on context, the presence of a binary is suspicious or malicious.
Malware family:
Formbook
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/1fad8dfa-03f3-45c8-87a6-b13e4588c6e8
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1016081
Signature
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
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
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Tries to detect virtualization through RDTSC time measurements
Uses netsh to modify the Windows network and firewall settings
Yara detected AntiVM3
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 648577 Sample: Copy!!!.exe Startdate: 20/06/2022 Architecture: WINDOWS Score: 100 33 Malicious sample detected (through community Yara rule) 2->33 35 Antivirus detection for URL or domain 2->35 37 Multi AV Scanner detection for submitted file 2->37 39 6 other signatures 2->39 9 Copy!!!.exe 3 2->9         started        process3 file4 31 C:\Users\user\AppData\...\Copy!!!.exe.log, ASCII 9->31 dropped 47 Uses netsh to modify the Windows network and firewall settings 9->47 49 Tries to detect virtualization through RDTSC time measurements 9->49 51 Injects a PE file into a foreign processes 9->51 13 Copy!!!.exe 9->13         started        16 Copy!!!.exe 9->16         started        18 Copy!!!.exe 9->18         started        20 Copy!!!.exe 9->20         started        signatures5 process6 signatures7 53 Modifies the context of a thread in another process (thread injection) 13->53 55 Maps a DLL or memory area into another process 13->55 57 Sample uses process hollowing technique 13->57 59 Queues an APC in another process (thread injection) 13->59 22 netsh.exe 13->22         started        25 explorer.exe 13->25 injected process8 signatures9 41 Modifies the context of a thread in another process (thread injection) 22->41 43 Maps a DLL or memory area into another process 22->43 45 Tries to detect virtualization through RDTSC time measurements 22->45 27 cmd.exe 1 22->27         started        process10 process11 29 conhost.exe 27->29         started       
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/25d92375393afe6b1c651fc1dc839887086a9329f0debf6b93411afb9e23e129/
Threat name:
ByteCode-MSIL.Trojan.FormBook
Create hunting rule
Status:
Malicious
First seen:
2022-06-20 05:59:56 UTC
File Type:
PE (.Net Exe)
Extracted files:
10
AV detection:
18 of 26 (69.23%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=exmsg5jzhl7gwhdfd7a5za4yq4egvezj6dpl624tienpxhrd4euq._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Result
Malware family:
formbook
Create hunting rule
Score:
  10/10
Tags:
family:formbook campaign:rsea rat spyware stealer suricata trojan
Link:
https://tria.ge/reports/220620-gn77ssafb6/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
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
suricata: ET MALWARE FormBook CnC Checkin (GET)
Unpacked files
SH256 hash:
1c1197a3e6b4fc172fb702defd122092e721ba3c271a48c89466121f4771fd9f
MD5 hash:
610f04d8febfa747d32b84a3ac777e81
SHA1 hash:
799bafeb8333ce64674864a89f969c3977152e26
Detections:
win_formbook_g0
Create hunting rule
win_formbook_auto
Create hunting rule
Link:
https://www.unpac.me/results/b918220b-6fde-41be-8ac3-689da578df31/
Parent samples :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 hash:
19e5ae0ef6490a330f5ae2f5a884cef20ce6dcb9d898b33b2a3e256e7ea1b210
MD5 hash:
f4681fe306cdeef8ea6630a173028153
SHA1 hash:
9dd02a312e26277a0db9f76f73938044385c0d30
Link:
https://www.unpac.me/results/b918220b-6fde-41be-8ac3-689da578df31/
SH256 hash:
79823e47436e129def4fba8ee225347a05b7bb27477fb1cc8be6dc9e9ce75696
MD5 hash:
39f524c1ab0eb76dfd79b2852e5e8c39
SHA1 hash:
428018e1701006744e34480b0029982a76d8a57d
Link:
https://www.unpac.me/results/b918220b-6fde-41be-8ac3-689da578df31/
SH256 hash:
25d92375393afe6b1c651fc1dc839887086a9329f0debf6b93411afb9e23e129
MD5 hash:
d5a0368b56f847f752cb5211316298a8
SHA1 hash:
0f0be4ed03cf1ee08a9f3ace3c46794db346f3f1
Link:
https://www.unpac.me/results/b918220b-6fde-41be-8ac3-689da578df31/
Malware family:
FormBook
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/25d92375393a/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Malicious File
Score:
0.71
Link:
https://yomi.yoroi.company/submissions/25d92375393afe6b1c651fc1dc839887086a9329f0debf6b93411afb9e23e129

YARA Signatures

MalwareBazaar uses YARA rules from several public and non-public repositories, such as YARAhub and Malpedia. Those are being matched against malware samples uploaded to MalwareBazaar as well as against any suspicious process dumps they may create. Please note that only results from TLP:CLEAR rules are being displayed.

Rule name:exploit_any_poppopret
Create hunting rule
Author:Jeff White [karttoon@gmail.com] @noottrak
Description:Identify POP -> POP -> RET opcodes for quick ROP Gadget creation in target binaries.
Rule name:pe_imphash
Create hunting rule
Rule name:Skystars_Malware_Imphash
Create hunting rule
Author:Skystars LightDefender
Description:imphash

File information

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

Malspam

Formbook

rar c3e187cf3c0b82b1fedb6340c005a03f7a51909227d3ec4924e760dd0d1b10d2

Formbook

Executable exe 25d92375393afe6b1c651fc1dc839887086a9329f0debf6b93411afb9e23e129

(this sample)

  
Delivery method
Other
  
Dropped by
SHA256 c3e187cf3c0b82b1fedb6340c005a03f7a51909227d3ec4924e760dd0d1b10d2
Cape
Cape
https://www.capesandbox.com/analysis/281430/
  
Dropped by
MD5 16069ea2de3675d1780a69c258d26264

Comments