MalwareBazaar Database
You are currently viewing the MalwareBazaar entry for SHA256 d8aa0a0e024a8dbabf0ff61cb75a879e2dac0c2ca537049cb86a64071ecf6a33. 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: 11
| SHA256 hash: | d8aa0a0e024a8dbabf0ff61cb75a879e2dac0c2ca537049cb86a64071ecf6a33 |
|---|---|
| SHA3-384 hash: | 011ef40381ed68af0dc42d72fe650f4fe3251c55d61203fdd6df787f5faf77b68c41d10e7f601ba0ff7439657bbc6a5d |
| SHA1 hash: | 10d38bbec124ab51b763e922061b85f23f0ba0bc |
| MD5 hash: | be22dfbbdb5d473c79c71de4270ad63f |
| humanhash: | arkansas-pennsylvania-papa-echo |
| File name: | be22dfbbdb5d473c79c71de4270ad63f |
| Download: | download sample |
| Signature | Formbook |
| File size: | 751'104 bytes |
| First seen: | 2022-03-08 18:16:10 UTC |
| Last seen: | 2022-03-08 20:08:15 UTC |
| File type: |  exe |
| MIME type: | application/x-dosexec |
| imphash | f34d5f2d4577ed6d9ceec516c1f5a744 (48'652 x AgentTesla, 19'463 x Formbook, 12'204 x SnakeKeylogger) |
| ssdeep | 12288:Hc4AgfKvCXspedO45LSMPQahl78hZbz8bITXYZhY7aoP+KsWjC8PP9:84jfKv6Yj45LSMPrFUbz88ToZh8aoP+e |
| TLSH | T18CF48DACBB482B9BEF9019F2999A50063D25375CA1CED2312E8EDD10F0E6C74997435F |
| Reporter |  zbetcheckin |
| Tags: | 32 exe FormBook |
Intelligence
File Origin
# of uploads :
2
# of downloads :
213
Origin country :
n/a
Vendor Threat Intelligence
Detection:
Formbook
Result
Verdict:
Malware
Maliciousness:
Behaviour
Searching for the window
Adding an access-denied ACE
Launching a process
Сreating synchronization primitives
Creating a file
Searching for synchronization primitives
Launching cmd.exe command interpreter
Reading critical registry keys
DNS request
Sending an HTTP GET request
Unauthorized injection to a system process
Verdict:
Suspicious
Threat level:
5/10
Confidence:
100%
Tags:
obfuscated packed
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
Verdict:
Malicious
Result
Threat name:
FormBook
Detection:
malicious
Classification:
troj.expl.evad
Score:
100 / 100
Signature
.NET source code references suspicious native API functions
C2 URLs / IPs found in malware configuration
Contains functionality to hide user accounts
Found malware configuration
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 submitted file
Queues an APC in another process (thread injection)
Sample uses process hollowing technique
Sigma detected: CMSTP Execution Process Creation
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Tries to detect virtualization through RDTSC time measurements
Yara detected AntiVM3
Yara detected FormBook
Yara detected UAC Bypass using CMSTP
Behaviour
Behavior Graph:
Detection:
xloader
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
Status:
Malicious
First seen:
2022-03-08 16:59:00 UTC
File Type:
PE (.Net Exe)
Extracted files:
1
AV detection:
22 of 27 (81.48%)
Threat level:
5/5
Verdict:
malicious
Label(s):
formbook
Result
Malware family:
xloader
Score:
10/10
Tags:
family:xloader campaign:y329 loader rat
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Program crash
Suspicious use of SetThreadContext
Xloader Payload
Xloader
Unpacked files
SH256 hash:
d8aa0a0e024a8dbabf0ff61cb75a879e2dac0c2ca537049cb86a64071ecf6a33
MD5 hash:
be22dfbbdb5d473c79c71de4270ad63f
SHA1 hash:
10d38bbec124ab51b763e922061b85f23f0ba0bc
Malware family:
XLoader
Verdict:
Malicious
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Suspicious File
Score:
0.38
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: | malware_Formbook_strings |
|---|---|
| Author: | JPCERT/CC Incident Response Group |
| Description: | detect Formbook in memory |
| Reference: | internal research |
| Rule name: | pe_imphash |
|---|
| Rule name: | Skystars_Malware_Imphash |
|---|---|
| Author: | Skystars LightDefender |
| Description: | imphash |
| Rule name: | win_formbook_auto |
|---|---|
| Author: | Felix Bilstein - yara-signator at cocacoding dot com |
| Description: | Detects win.formbook. |
File information
The table below shows additional information about this malware sample such as delivery method and external references.
Web download
Delivery method
Distributed via web download
Comments
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