MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 c43a9d3d87d5ce17e61de74587b9a1e4aa0250aae1fa6dde4e392e6de187b096. 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: 14


Intelligence 14 IOCs YARA File information Comments

SHA256 hash: c43a9d3d87d5ce17e61de74587b9a1e4aa0250aae1fa6dde4e392e6de187b096
SHA3-384 hash: 346a55d9ad79b95ab9d467f1ab1bd91fe4167a0a0e0ef81d575b9493e22d8b09e5adaf6fff69ece9fc61ac533da5b47a
SHA1 hash: e798fb18a9ddf2510cdbc536dd96144661ca8ea8
MD5 hash: 71895780eaa4fe577e5d406cb84e150e
humanhash: stream-carpet-wyoming-lactose
File name:71895780eaa4fe577e5d406cb84e150e.exe
Download: download sample
Signature Formbook
File size:457'535 bytes
First seen:2022-04-20 09:31:31 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash 56a78d55f3f7af51443e58e0ce2fb5f6 (719 x GuLoader, 451 x Formbook, 295 x Loki)
ssdeep 12288:INfWdV0rrq1NYAoqkurnH3IjLa9Yc/dkM:INOdarsNYvubIMHX
Threatray 15'094 similar samples on MalwareBazaar
TLSH T1EBA402A1B2B4F0F6E8ED0331362AD15B8F50643790E646673750BFDEA89D8B0546F70A
TrID 48.8% (.EXE) Win32 Executable MS Visual C++ (generic) (31206/45/13)
16.4% (.EXE) Win64 Executable (generic) (10523/12/4)
10.2% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
7.8% (.EXE) Win16 NE executable (generic) (5038/12/1)
7.0% (.EXE) Win32 Executable (generic) (4505/5/1)
File icon (PE):PE icon
dhash icon dcf8d8d0d0e8e8cc (1 x Formbook)
Reporter abuse_ch
Tags:exe FormBook

Intelligence


File Origin
# of uploads :
1
# of downloads :
227
Origin country :
n/a
Vendor Threat Intelligence
Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Creating a file in the %temp% directory
Creating a process from a recently created file
Creating a file in the %AppData% subdirectories
Searching for the window
Сreating synchronization primitives
Launching a process
Launching cmd.exe command interpreter
Searching for synchronization primitives
DNS request
Sending an HTTP GET request
Connecting to a non-recommended domain
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Unauthorized injection to a recently created process
Unauthorized injection to a recently created process by context flags manipulation
Unauthorized injection to a system process
Verdict:
Likely Malicious
Threat level:
  7.5/10
Confidence:
100%
Tags:
control.exe overlay packed shell32.dll
Result
Verdict:
MALICIOUS
Details
Windows PE Executable
Found a Windows Portable Executable (PE) binary. Depending on context, the presence of a binary is suspicious or malicious.
Result
Threat name:
FormBook
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Signature
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Found evasive API chain (may stop execution after reading information in the PEB, e.g. number of processors)
Found malware configuration
Injects a PE file into a foreign processes
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)
Multi AV Scanner detection for dropped file
Queues an APC in another process (thread injection)
Sample uses process hollowing technique
Tries to detect virtualization through RDTSC time measurements
Yara detected FormBook
Behaviour
Behavior Graph:
behaviorgraph top1 signatures2 2 Behavior Graph ID: 611931 Sample: XYttjKGt3j.exe Startdate: 20/04/2022 Architecture: WINDOWS Score: 100 61 Found malware configuration 2->61 63 Malicious sample detected (through community Yara rule) 2->63 65 Antivirus detection for URL or domain 2->65 67 2 other signatures 2->67 11 XYttjKGt3j.exe 18 2->11         started        process3 dnsIp4 51 192.168.2.1 unknown unknown 11->51 47 C:\Users\user\AppData\Local\...\pkqvhvquh.exe, PE32 11->47 dropped 15 pkqvhvquh.exe 1 3 11->15         started        file5 process6 file7 49 C:\Users\user\AppData\...\mfmfycmde.exe, PE32 15->49 dropped 53 Multi AV Scanner detection for dropped file 15->53 55 Found evasive API chain (may stop execution after reading information in the PEB, e.g. number of processors) 15->55 57 Tries to detect virtualization through RDTSC time measurements 15->57 59 Injects a PE file into a foreign processes 15->59 19 pkqvhvquh.exe 15->19         started        22 conhost.exe 15->22         started        signatures8 process9 signatures10 69 Modifies the context of a thread in another process (thread injection) 19->69 71 Maps a DLL or memory area into another process 19->71 73 Sample uses process hollowing technique 19->73 75 Queues an APC in another process (thread injection) 19->75 24 explorer.exe 19->24 injected process11 process12 26 cscript.exe 24->26         started        29 mfmfycmde.exe 1 24->29         started        31 mfmfycmde.exe 1 24->31         started        signatures13 77 Modifies the context of a thread in another process (thread injection) 26->77 79 Maps a DLL or memory area into another process 26->79 81 Tries to detect virtualization through RDTSC time measurements 26->81 33 cmd.exe 1 26->33         started        35 explorer.exe 146 26->35         started        83 Multi AV Scanner detection for dropped file 29->83 37 WerFault.exe 23 9 29->37         started        39 conhost.exe 29->39         started        41 WerFault.exe 2 9 31->41         started        43 conhost.exe 31->43         started        process14 process15 45 conhost.exe 33->45         started       
Threat name:
Win32.Trojan.FormBook
Status:
Malicious
First seen:
2022-04-20 09:32:06 UTC
File Type:
PE (Exe)
Extracted files:
3
AV detection:
17 of 26 (65.38%)
Threat level:
  5/5
Result
Malware family:
xloader
Score:
  10/10
Tags:
family:xloader campaign:a2c8 loader persistence rat
Behaviour
Gathers network information
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
Enumerates physical storage devices
Suspicious use of SetThreadContext
Adds Run key to start application
Loads dropped DLL
Executes dropped EXE
Xloader Payload
Xloader
Unpacked files
SH256 hash:
7c887742e14f2f1c3207cd36338da6a504ce463ff91d7b0549d3d50a54da1549
MD5 hash:
aed447bb5c507a698c0221bf9aef836a
SHA1 hash:
56e1cc10c2872d54238c9d6eaab85e7ca53edbff
Detections:
win_formbook_g0 win_formbook_auto
SH256 hash:
50cd513f82edc742cbab4cbd8415b94410d23992bb85709fae0197eb006186f2
MD5 hash:
8df2b872f8df8935914ac1db60ab1097
SHA1 hash:
9d88c7236639324e919e0580a38d1650b1095307
SH256 hash:
c43a9d3d87d5ce17e61de74587b9a1e4aa0250aae1fa6dde4e392e6de187b096
MD5 hash:
71895780eaa4fe577e5d406cb84e150e
SHA1 hash:
e798fb18a9ddf2510cdbc536dd96144661ca8ea8
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.

Web download

Formbook

Executable exe c43a9d3d87d5ce17e61de74587b9a1e4aa0250aae1fa6dde4e392e6de187b096

(this sample)

  
Delivery method
Distributed via web download

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