MalwareBazaar Database
You are currently viewing the MalwareBazaar entry for SHA256 188e88b01bc05b9e23ce3133471d99ecaec9515404faa787f745fc70bafe4656. 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: | 188e88b01bc05b9e23ce3133471d99ecaec9515404faa787f745fc70bafe4656 |
|---|---|
| SHA3-384 hash: | e3aca2fd7b4548f53640d4e6a3d6d4c72eb7f4619fde890f1e87970f81e77398881c3d47c7bec4eb5dfc352dfb63f07d |
| SHA1 hash: | 963c23acc475923d79ed8a3d17ca183fcfbf084c |
| MD5 hash: | cfa809c8fb2550c63f63136893075d04 |
| humanhash: | pizza-saturn-romeo-jig |
| File name: | MAILER-DAEMON WEBMAIL ERROR MESSAGE.exe |
| Download: | download sample |
| Signature | Formbook |
| File size: | 45'568 bytes |
| First seen: | 2022-04-19 11:48:40 UTC |
| Last seen: | 2022-04-19 21:57:29 UTC |
| File type: |  exe |
| MIME type: | application/x-dosexec |
| imphash | f34d5f2d4577ed6d9ceec516c1f5a744 (48'666 x AgentTesla, 19'479 x Formbook, 12'209 x SnakeKeylogger) |
| ssdeep | 384:9fx2TR75NJpie1Tffffff9fQkulaieMwCKPkH2S3dd0hUADka6a9:X2TlFclMMwCKa3deVDX |
| Threatray | 15'002 similar samples on MalwareBazaar |
| TLSH | T1E223095A78965619C5D47BF969B0A2931236BCE10124C14FECF9BF29AE73323CCC216D |
| 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): |  |
| dhash icon | 174f4559191b1b13 (81 x AgentTesla, 68 x Formbook, 34 x SnakeKeylogger) |
| Reporter |  cocaman |
| Tags: | exe FormBook |
cocaman
Malicious email (T1566.001)From: "Mail Delivery System <mailer-daemon@server200.serverange.net>" (likely spoofed)
Received: "from server200.serverange.net (unknown [195.133.18.248]) "
Date: "19 Apr 2022 11:12:38 +0200"
Subject: "Mail Delivery Failed: returning message to sender "
Attachment: "MAILER-DAEMON WEBMAIL ERROR MESSAGE.exe"
Intelligence
File Origin
# of uploads :
4
# of downloads :
237
Origin country :
n/a
Vendor Threat Intelligence
Detection:
Formbook
Result
Verdict:
Malware
Maliciousness:
Behaviour
Searching for the window
Creating a window
Sending a custom TCP request
Сreating synchronization primitives
DNS request
Sending an HTTP GET request
Running batch commands
Creating a process with a hidden window
Launching a process
Unauthorized injection to a recently created process
Creating a file
Searching for synchronization primitives
Launching cmd.exe command interpreter
Unauthorized injection to a system process
Verdict:
Suspicious
Threat level:
5/10
Confidence:
100%
Tags:
control.exe obfuscated packed
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.
Verdict:
Malicious
Result
Threat name:
FormBook
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Signature
C2 URLs / IPs found in malware configuration
Found malware configuration
Icon mismatch, binary includes an icon from a different legit application in order to fool users
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
Self deletion via cmd delete
Tries to detect virtualization through RDTSC time measurements
Yara detected FormBook
Behaviour
Behavior Graph:
Threat name:
ByteCode-MSIL.Trojan.FormBook
Status:
Malicious
First seen:
2022-04-19 09:26:07 UTC
File Type:
PE (.Net Exe)
Extracted files:
16
AV detection:
21 of 26 (80.77%)
Threat level:
5/5
Detection(s):
Suspicious file
Verdict:
malicious
Label(s):
formbook
Similar samples:
+ 14'992 additional samples on MalwareBazaar
Result
Malware family:
xloader
Score:
10/10
Tags:
family:xloader campaign:fk84 loader rat suricata
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
Xloader Payload
Xloader
suricata: ET MALWARE FormBook CnC Checkin (GET)
Unpacked files
SH256 hash:
188e88b01bc05b9e23ce3133471d99ecaec9515404faa787f745fc70bafe4656
MD5 hash:
cfa809c8fb2550c63f63136893075d04
SHA1 hash:
963c23acc475923d79ed8a3d17ca183fcfbf084c
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:
0.35
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_EXE_Packed_SmartAssembly |
|---|---|
| Author: | ditekSHen |
| Description: | Detects executables packed with SmartAssembly |
| 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.
Malspam
Delivery method
Distributed via e-mail attachment
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