MalwareBazaar Database
You are currently viewing the MalwareBazaar entry for SHA256 ac4ecd3653dbaa7da06c6c6f6aa0b228ad6ac938db5e6dca6007b916f68e2fe4. 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: | ac4ecd3653dbaa7da06c6c6f6aa0b228ad6ac938db5e6dca6007b916f68e2fe4 |
|---|---|
| SHA3-384 hash: | 8b242b273b5c5d69e87d24fad401bd828aec8fcc713becfade717045561efdc1ebd1381ca42415e7cae55561fb364c44 |
| SHA1 hash: | c10dd03dcd3b7f2e0fc0c5c66bb11beaec0c61f4 |
| MD5 hash: | ef72839085a5ada9e7f45f0af36cf9ec |
| humanhash: | fish-november-berlin-lithium |
| File name: | Overdue invoice pdf.exe |
| Download: | download sample |
| Signature | Formbook |
| File size: | 996'352 bytes |
| First seen: | 2021-04-28 12:52:33 UTC |
| Last seen: | 2021-04-29 20:23:05 UTC |
| File type: |  exe |
| MIME type: | application/x-dosexec |
| imphash | f34d5f2d4577ed6d9ceec516c1f5a744 (48'748 x AgentTesla, 19'647 x Formbook, 12'245 x SnakeKeylogger) |
| ssdeep | 24576:6OiJbiiJbviJbkwno5LeZmx1wXnkimJo6B9sd3BiJbY:6OiJeiJTiJuBZxOUiAo3d3BiJ |
| Threatray | 4'849 similar samples on MalwareBazaar |
| TLSH | 6A25CF8F18A4D9D3C3A666BC20FBE56103F32DC28A46DED9735C7286777BA6D4016603 |
| Reporter |  James_inthe_box |
| Tags: | exe FormBook |
Intelligence
File Origin
# of uploads :
3
# of downloads :
90
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
Overdue invoice pdf.exe
Verdict:
Malicious activity
Analysis date:
2021-04-28 12:58:55 UTC
Tags:
n/a
Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
n/a
Result
Verdict:
Malware
Maliciousness:
Behaviour
Creating a window
Sending a UDP request
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 malware configuration
Initial sample is a PE file and has a suspicious name
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)
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
Uses schtasks.exe or at.exe to add and modify task schedules
Yara detected AntiVM3
Yara detected FormBook
Behaviour
Behavior Graph:
Detection:
formbook
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
Status:
Malicious
First seen:
2021-04-28 04:15:51 UTC
File Type:
PE (.Net Exe)
Extracted files:
28
AV detection:
20 of 29 (68.97%)
Threat level:
5/5
Detection(s):
Malicious file
Verdict:
malicious
Similar samples:
+ 4'839 additional samples on MalwareBazaar
Result
Malware family:
formbook
Score:
10/10
Tags:
family:formbook rat spyware stealer trojan
Behaviour
Creates scheduled task(s)
Gathers network information
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Suspicious use of SetThreadContext
Deletes itself
Formbook Payload
Formbook
Malware Config
C2 Extraction:
http://w����5 �@q[*��S=���m
Unpacked files
SH256 hash:
11cf5a51e593c007ff4f91294cf505ffd5e425e56387c60d81e6479cc284cc3b
MD5 hash:
73cc3f7e7700e6a54cb5f291dffe5aa1
SHA1 hash:
09174f9fa55c9bac0540efb7a8c682878a32d02d
SH256 hash:
ac4ecd3653dbaa7da06c6c6f6aa0b228ad6ac938db5e6dca6007b916f68e2fe4
MD5 hash:
ef72839085a5ada9e7f45f0af36cf9ec
SHA1 hash:
c10dd03dcd3b7f2e0fc0c5c66bb11beaec0c61f4
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Kryptik
Score:
1.00
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: | INDICATOR_SUSPICIOUS_Stomped_PECompilation_Timestamp_InTheFu |
|---|---|
| Author: | ditekSHen |
| Description: | Detect executables with stomped PE compilation timestamp that is greater than local current time |
File information
The table below shows additional information about this malware sample such as delivery method and external references.
Delivery method
Other
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