MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 aaa0dfb3ef0970fb0d4437de50371e20e4c8563051c90a63334964a9cd454749. 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 2 File information Comments 1

SHA256 hash: aaa0dfb3ef0970fb0d4437de50371e20e4c8563051c90a63334964a9cd454749
SHA3-384 hash: 1121e0fb112bf36da9ca594f1f4c713a175d1edd2c21658212946af5525b15e4a8d853a41689f49246457288c450551d
SHA1 hash: baaa05d6f211c8872f8ec47a908f52eab8f569f3
MD5 hash: 4a2a307681ec550b52f4226c816f7868
humanhash: asparagus-wolfram-robin-delaware
File name:4a2a307681ec550b52f4226c816f7868
Download: download sample
Signature Formbook
File size:81'408 bytes
First seen:2022-05-31 13:28:58 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'658 x AgentTesla, 19'469 x Formbook, 12'208 x SnakeKeylogger)
ssdeep 1536:2Flbn6yvCX6b8+aJ9JpJJwjbuh8jpn3e9fjwoXoOcCgD:OlbXCCaJ9JpJJGu2pu1hRa
Threatray 16'345 similar samples on MalwareBazaar
TLSH T193839C233E49AF92C4682C349832E3A29A712EF16C366763FDA47B1EB5744D1DB041B4
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 f0a4d4f4c4d8cccc (4 x Formbook)
Reporter zbetcheckin
Tags:32 exe FormBook

Intelligence


File Origin
# of uploads :
1
# of downloads :
413
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
formbook
ID:
1
File name:
New Order _P950s & P1100s.xlsx
Verdict:
Malicious activity
Analysis date:
2022-05-31 11:34:25 UTC
Tags:
encrypted opendir loader exploit CVE-2017-11882 formbook trojan stealer

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Сreating synchronization primitives
Running batch commands
Creating a process with a hidden window
Launching a process
DNS request
Sending an HTTP GET request
Creating a file in the %AppData% subdirectories
Creating a file
Launching cmd.exe command interpreter
Searching for synchronization primitives
Setting browser functions hooks
Enabling autorun by creating a file
Unauthorized injection to a system process
Unauthorized injection to a browser process
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
obfuscated packed wacatac
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.
Result
Threat name:
FormBook
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Signature
.NET source code contains potential unpacker
Allocates memory in foreign processes
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Creates an undocumented autostart registry key
Found malware configuration
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)
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
Snort IDS alert for network traffic
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Tries to detect virtualization through RDTSC time measurements
Writes to foreign memory regions
Yara detected Costura Assembly Loader
Yara detected FormBook
Behaviour
Behavior Graph:
behaviorgraph top1 signatures2 2 Behavior Graph ID: 636797 Sample: BYPyvuu4aZ Startdate: 31/05/2022 Architecture: WINDOWS Score: 100 55 Snort IDS alert for network traffic 2->55 57 Found malware configuration 2->57 59 Malicious sample detected (through community Yara rule) 2->59 61 10 other signatures 2->61 10 BYPyvuu4aZ.exe 15 7 2->10         started        process3 dnsIp4 47 abscongo.cf 192.185.174.18, 49742, 80 UNIFIEDLAYER-AS-1US United States 10->47 41 C:\Users\user\AppData\Roaming\...\Xvhcan.exe, PE32 10->41 dropped 43 C:\Users\user\...\Xvhcan.exe:Zone.Identifier, ASCII 10->43 dropped 45 C:\Users\user\AppData\...\BYPyvuu4aZ.exe.log, ASCII 10->45 dropped 63 Creates an undocumented autostart registry key 10->63 65 Writes to foreign memory regions 10->65 67 Allocates memory in foreign processes 10->67 69 Injects a PE file into a foreign processes 10->69 15 MSBuild.exe 10->15         started        18 cmd.exe 1 10->18         started        20 cmd.exe 1 10->20         started        file5 signatures6 process7 signatures8 71 Modifies the context of a thread in another process (thread injection) 15->71 73 Maps a DLL or memory area into another process 15->73 75 Sample uses process hollowing technique 15->75 77 2 other signatures 15->77 22 explorer.exe 15->22 injected 24 conhost.exe 18->24         started        26 timeout.exe 1 18->26         started        28 conhost.exe 20->28         started        30 timeout.exe 1 20->30         started        process9 process10 32 help.exe 22->32         started        signatures11 49 Modifies the context of a thread in another process (thread injection) 32->49 51 Maps a DLL or memory area into another process 32->51 53 Tries to detect virtualization through RDTSC time measurements 32->53 35 cmd.exe 1 32->35         started        37 explorer.exe 121 32->37         started        process12 process13 39 conhost.exe 35->39         started       
Threat name:
ByteCode-MSIL.Trojan.BotX
Status:
Malicious
First seen:
2022-05-31 13:29:05 UTC
File Type:
PE (.Net Exe)
Extracted files:
14
AV detection:
18 of 26 (69.23%)
Threat level:
  5/5
Result
Malware family:
formbook
Score:
  10/10
Tags:
family:formbook campaign:m9y5 rat spyware stealer suricata trojan
Behaviour
Delays execution with timeout.exe
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Suspicious use of SetThreadContext
Checks computer location settings
Formbook Payload
Formbook
suricata: ET MALWARE FormBook CnC Checkin (GET)
Unpacked files
SH256 hash:
aaa0dfb3ef0970fb0d4437de50371e20e4c8563051c90a63334964a9cd454749
MD5 hash:
4a2a307681ec550b52f4226c816f7868
SHA1 hash:
baaa05d6f211c8872f8ec47a908f52eab8f569f3
Please note that we are no longer able to provide a coverage score for Virus Total.

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:pe_imphash
Rule name:Skystars_Malware_Imphash
Author:Skystars LightDefender
Description:imphash

File information


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

Web download

Formbook

Executable exe aaa0dfb3ef0970fb0d4437de50371e20e4c8563051c90a63334964a9cd454749

(this sample)

  
Delivery method
Distributed via web download

Comments



Avatar
zbet commented on 2022-05-31 13:29:05 UTC

url : hxxp://104.168.33.25/mof/moo.exe