MalwareBazaar Database
You are currently viewing the MalwareBazaar entry for SHA256 91fa1797421a3393289ae3892d128158ca3a16efd453be49e0c38d5891deefba. 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: 12
| SHA256 hash: | 91fa1797421a3393289ae3892d128158ca3a16efd453be49e0c38d5891deefba |
|---|---|
| SHA3-384 hash: | 7b70c6ce1a829673c86f3eea3fd1ac81c5c0028fb48620cda7af75f25d6ef5bec04b0dfdf25740f3abe148cfd8157043 |
| SHA1 hash: | 6e7c78a55f5f09a968adf2a7d947e3bbb3012f4c |
| MD5 hash: | cd4a716b2886b9d6609b4e00c97964f0 |
| humanhash: | beer-emma-lima-vermont |
| File name: | triage_dropped_file |
| Download: | download sample |
| Signature | Formbook |
| File size: | 413'696 bytes |
| First seen: | 2021-04-26 15:06:27 UTC |
| Last seen: | 2021-04-26 15:47:25 UTC |
| File type: |  exe |
| MIME type: | application/x-dosexec |
| imphash | 7992f385465c3a91784159b680857f5e (1 x Formbook) |
| ssdeep | 12288:cm9enLXQpjT7iBQks1IftmqxL5v06QtHpa:xMXQlyBQJ7Kv06QtJa |
| Threatray | 4'843 similar samples on MalwareBazaar |
| TLSH | 1694AE10B180E433D3B21572892DC7B55E6EFC60A71655CB6A883A792F34ED1673E33A |
| Reporter |  malwarelabnet |
| Tags: | FormBook xloader |
Intelligence
File Origin
# of uploads :
2
# of downloads :
218
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
triage_dropped_file
Verdict:
Malicious activity
Analysis date:
2021-04-26 15:07:51 UTC
Tags:
trojan formbook stealer
Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
Formbook
Result
Verdict:
Malware
Maliciousness:
Behaviour
Sending a UDP request
Creating a window
Unauthorized injection to a recently created process
Launching a process
Launching cmd.exe command interpreter
DNS request
Sending an HTTP GET request
Unauthorized injection to a system process
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
Contains functionality to inject code into remote processes
Detected unpacking (changes PE section rights)
Found 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)
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 (e.g. based on Emerging Threat rules)
System process connects to network (likely due to code injection or exploit)
Tries to detect virtualization through RDTSC time measurements
Yara detected FormBook
Behaviour
Behavior Graph:
Threat name:
Win32.Trojan.Ranumbot
Status:
Malicious
First seen:
2021-04-26 13:27:39 UTC
AV detection:
19 of 29 (65.52%)
Threat level:
5/5
Detection(s):
Suspicious file
Verdict:
malicious
Similar samples:
+ 4'833 additional samples on MalwareBazaar
Result
Malware family:
xloader
Score:
10/10
Tags:
family:xloader loader rat
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
Blocklisted process makes network request
Xloader Payload
Xloader
Malware Config
C2 Extraction:
http://www.gailrichardson.com/qjnt/
Unpacked files
SH256 hash:
fa9f1595d37c0320cb54f389acf0da8ce221dddd5dc79bb5cbee17045eda573b
MD5 hash:
942e37890bf8ae60a2936defe7b5979d
SHA1 hash:
5530b73f6ad78e08f759c9c8465483b1b3f19f24
Detections:
win_formbook_g0
win_formbook_auto
SH256 hash:
91fa1797421a3393289ae3892d128158ca3a16efd453be49e0c38d5891deefba
MD5 hash:
cd4a716b2886b9d6609b4e00c97964f0
SHA1 hash:
6e7c78a55f5f09a968adf2a7d947e3bbb3012f4c
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Malicious File
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 |
| Rule name: | INDICATOR_SUSPICIOUS_Stomped_PECompilation_Timestamp_InTheFuture |
|---|---|
| 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.
Web download
Delivery method
Distributed via web download
Comments
Login required
You need to login to in order to write a comment. Login with your abuse.ch account.============================================================
MBC behaviors list (github.com/accidentalrebel/mbcscan):
============================================================
0) [C0003.002] Communication Micro-objective::Connect Pipe::Interprocess Communication
1) [C0003.001] Communication Micro-objective::Create Pipe::Interprocess Communication
2) [C0003.003] Communication Micro-objective::Read Pipe::Interprocess Communication
3) [C0003.004] Communication Micro-objective::Write Pipe::Interprocess Communication
4) [C0027.009] Cryptography Micro-objective::RC4::Encrypt Data
5) [C0021.004] Cryptography Micro-objective::RC4 PRGA::Generate Pseudo-random Sequence
6) [C0047] File System Micro-objective::Delete File
7) [C0049] File System Micro-objective::Get File Attributes
8) [C0052] File System Micro-objective::Writes File
9) [C0007] Memory Micro-objective::Allocate Memory
10) [C0033] Operating System Micro-objective::Console
11) [C0034.001] Operating System Micro-objective::Set Variable::Environment Variable
12) [C0040] Process Micro-objective::Allocate Thread Local Storage
13) [C0043] Process Micro-objective::Check Mutex
14) [C0042] Process Micro-objective::Create Mutex
15) [C0041] Process Micro-objective::Set Thread Local Storage Value
16) [C0018] Process Micro-objective::Terminate Process
17) [C0039] Process Micro-objective::Terminate Thread