MalwareBazaar Database
You are currently viewing the MalwareBazaar entry for SHA256 1d5f3d37adf2008407df7bf0a8858b811bb725d757021261460787a64dd55811. 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: 10
| SHA256 hash: | 1d5f3d37adf2008407df7bf0a8858b811bb725d757021261460787a64dd55811 |
|---|---|
| SHA3-384 hash: | 4c7bcecd5c86efae439948de75af243b002664b322b4731f304a3f917ba530fa891eb9a7736d1d348271da56d762b4b1 |
| SHA1 hash: | 78eca653c848005b36567ecaf3ecb2f896761784 |
| MD5 hash: | 6e345fd91fc781452db3d45f9b11ef9c |
| humanhash: | moon-lactose-leopard-pluto |
| File name: | 27355963980_001_00003_00002417.pdf.exe |
| Download: | download sample |
| Signature | Formbook |
| File size: | 755'096 bytes |
| First seen: | 2024-01-19 08:36:19 UTC |
| Last seen: | 2024-01-19 10:30:21 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:oAfcIV7HRJprKr0c6REIhsqD155PSffK7S+ATuMNDqUOw7:DPNZKr0c6R1vp5UffKJeuMNDCa |
| Threatray | 4 similar samples on MalwareBazaar |
| TLSH | T1BFF4BF00536C0B2BE55F02B4A41140E0777EEF8593EBEB5A440AB69D6CF3361B4B9D6B |
| TrID | 27.3% (.SCR) Windows screen saver (13097/50/3) 22.0% (.EXE) Win64 Executable (generic) (10523/12/4) 13.7% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2) 10.5% (.EXE) Win16 NE executable (generic) (5038/12/1) 9.4% (.EXE) Win32 Executable (generic) (4505/5/1) |
| Reporter |  lowmal3 |
| Tags: | exe FormBook signed |
Code Signing Certificate
| Organisation: | Microsoft Cooperation 2023 |
|---|---|
| Issuer: | Microsoft Cooperation 2023 |
| Algorithm: | sha256WithRSAEncryption |
| Valid from: | 2024-01-18T22:43:54Z |
| Valid to: | 2025-01-18T22:43:54Z |
| Serial number: | dfea78c8544fd3f9282e9b653093c99d |
| Thumbprint Algorithm: | SHA256 |
| Thumbprint: | 8727ac0237d3e1d5a504308bdc7fd78034903623dd9524e47d474fed92d4d8d8 |
| Source: | This information was brought to you by ReversingLabs A1000 Malware Analysis Platform |
Intelligence
File Origin
# of uploads :
2
# of downloads :
313
Origin country :
DEVendor Threat Intelligence
Detection:
n/a
Detection(s):
Result
Verdict:
Malware
Maliciousness:
Behaviour
Сreating synchronization primitives
DNS request
Sending a custom TCP request
Sending an HTTP GET request
Launching a process
Creating a file
Unauthorized injection to a system process
Verdict:
Malicious
Threat level:
10/10
Confidence:
100%
Tags:
anti-vm lolbin masquerade overlay packed setupapi
Verdict:
Suspicious
Labled as:
Malware
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:
Unknown
Result
Threat name:
FormBook
Detection:
malicious
Classification:
troj.expl.evad
Score:
100 / 100
Signature
.NET source code contains a domain name check
.NET source code contains potential unpacker
.NET source code contains process injector
.NET source code references suspicious native API functions
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
Multi AV Scanner detection for submitted file
Queues an APC in another process (thread injection)
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Uses an obfuscated file name to hide its real file extension (double extension)
Writes to foreign memory regions
Yara detected AntiVM3
Yara detected Costura Assembly Loader
Yara detected FormBook
Yara detected UAC Bypass using CMSTP
Behaviour
Behavior Graph:
Score:
67%
Verdict:
Susipicious
File Type:
PE
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
Status:
Malicious
First seen:
2024-01-19 01:30:54 UTC
File Type:
PE (.Net Exe)
Extracted files:
13
AV detection:
15 of 24 (62.50%)
Threat level:
5/5
Detection(s):
Suspicious file
Verdict:
unknown
Result
Malware family:
n/a
Score:
5/10
Tags:
n/a
Behaviour
Modifies Internet Explorer settings
Modifies system certificate store
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of UnmapMainImage
Suspicious use of WriteProcessMemory
Suspicious use of SetThreadContext
Unpacked files
SH256 hash:
2465acfeb3e6b65f8f70ce386a62f9e487d282c85f2c2b5d9e4c7210f3997ddb
MD5 hash:
bb9f5fbecc8cf23ae61d8fa566611573
SHA1 hash:
3788261d33b17e8eedd579bddb6b1fb5ae648f28
SH256 hash:
1d5f3d37adf2008407df7bf0a8858b811bb725d757021261460787a64dd55811
MD5 hash:
6e345fd91fc781452db3d45f9b11ef9c
SHA1 hash:
78eca653c848005b36567ecaf3ecb2f896761784
Verdict:
Malicious
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: | cobalt_strike_tmp01925d3f |
|---|---|
| Author: | The DFIR Report |
| Description: | files - file ~tmp01925d3f.exe |
| Reference: | https://thedfirreport.com |
| Rule name: | PE_Digital_Certificate |
|---|---|
| Author: | albertzsigovits |
| Rule name: | pe_imphash |
|---|
| Rule name: | PE_Potentially_Signed_Digital_Certificate |
|---|---|
| Author: | albertzsigovits |
| 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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