MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 78b15621d0319e8b7a105e1aa9a1927fb434bfce29e2a4f56051f552e393f08a. 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: 18


Intelligence 18 IOCs YARA 4 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 78b15621d0319e8b7a105e1aa9a1927fb434bfce29e2a4f56051f552e393f08a
SHA3-384 hash: b6a2582f42c9b00b03ca20ef989c58bc85e7c5880e66eb50675c4c48bc9cd7e166b1cf67a168544bf06476e4e05bddfa
SHA1 hash: ad6ecb132c05290ecd79784f6a8c1f074cb26b89
MD5 hash: 777f716b47261f01d1f8d131c7b7c587
humanhash: florida-snake-johnny-nineteen
File name:rDOC2837464553.scr
Download: download sample
Signature Formbook
Create hunting rule
File size:627'712 bytes
First seen:2024-03-24 14:42:35 UTC
Last seen:2024-03-25 12:30:20 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'648 x AgentTesla, 19'452 x Formbook, 12'201 x SnakeKeylogger)
ssdeep 12288:zFOJRYWqMPxhP9grhYkHVAq8US57gXSqp/dsYq0piayf5uQR2oc8ubx:zFOJbdPxDWGkHVAMOgCqvs2pKU0nu
Threatray 4'598 similar samples on MalwareBazaar
TLSH T13ED4230586E716FBF96263355C9D365C2B7EC2083D5BFFBE6C9E21CA27A52274014813
TrID 71.1% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
10.2% (.EXE) Win64 Executable (generic) (10523/12/4)
6.3% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
4.3% (.EXE) Win32 Executable (generic) (4504/4/1)
2.0% (.ICL) Windows Icons Library (generic) (2059/9)
Reporter FXOLabs
Tags:exe FormBook scr

Intelligence

File Origin
# of uploads :
3
# of downloads :
329
Origin country :
BR BR
Vendor Threat Intelligence
Malware family:
agenttesla
Create hunting rule
ID:
1
File name:
78b15621d0319e8b7a105e1aa9a1927fb434bfce29e2a4f56051f552e393f08a.exe
Verdict:
Malicious activity
Analysis date:
2024-03-24 14:44:34 UTC
Tags:
evasion stealer agenttesla
Link:
https://app.any.run/tasks/2f96ac84-81b3-4b8a-9a7c-846a3f31c811

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Creating a window
Launching a process
Creating a file
Using the Windows Management Instrumentation requests
Сreating synchronization primitives
DNS request
Connection attempt
Sending a custom TCP request
Sending an HTTP GET request
Reading critical registry keys
Moving a file to the Program Files subdirectory
Replacing files
Forced system process termination
Forced shutdown of a system process
Stealing user critical data
Unauthorized injection to a system process
Verdict:
Likely Malicious
Threat level:
  7.5/10
Confidence:
100%
Tags:
masquerade packed
Link:
https://www.filescan.io/uploads/66003bfa7a3c2d4da2465e1b/reports/3bd061f2-4dc4-46e6-91b6-f4bd379738c3/overview
Verdict:
Malicious
Labled as:
Trojan.Generic
Link:
https://www.hybrid-analysis.com/sample/78b15621d0319e8b7a105e1aa9a1927fb434bfce29e2a4f56051f552e393f08a
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.
Malware family:
Agent Tesla
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/34b279b3-7db8-4401-86ef-3e76139590f2
Result
Threat name:
AgentTesla
Create hunting rule
Detection:
malicious
Classification:
spre.troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1414724
Signature
.NET source code contains potential unpacker
.NET source code contains very large array initializations
Allocates memory in foreign processes
Check if machine is in data center or colocation facility
Contains functionality to check if a debugger is running (CheckRemoteDebuggerPresent)
Contains functionality to log keystrokes (.Net Source)
Found malware configuration
Injects a PE file into a foreign processes
Machine Learning detection for sample
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for submitted file
Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines)
Queries sensitive video device information (via WMI, Win32_VideoController, often done to detect virtual machines)
Sigma detected: MSBuild connects to smtp port
Sigma detected: Silenttrinity Stager Msbuild Activity
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Tries to harvest and steal browser information (history, passwords, etc)
Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc)
Tries to steal Mail credentials (via file / registry access)
Writes to foreign memory regions
Yara detected AgentTesla
Yara detected AntiVM3
Yara detected Generic Downloader
Behaviour
Behavior Graph:
Download SVG
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/78b15621d0319e8b7a105e1aa9a1927fb434bfce29e2a4f56051f552e393f08a
Detection:
agenttesla
Create hunting rule
Link:
https://mwdb.cert.pl/sample/78b15621d0319e8b7a105e1aa9a1927fb434bfce29e2a4f56051f552e393f08a/
Threat name:
Win32.Spyware.Negasteal
Create hunting rule
Status:
Malicious
First seen:
2024-03-19 19:16:44 UTC
File Type:
PE (.Net Exe)
Extracted files:
5
AV detection:
20 of 23 (86.96%)
Threat level:
  2/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=pcyvmioqggpiw6qqlynktimsp62djp6ofhrkj5lakh2vfy4t6cfa._file
Verdict:
malicious
Label(s):
agenttesla_v4
Create hunting rule
agenttesla
Create hunting rule
Similar samples:
1cc692d535fd1ba9ae5c6e115929a553ee6516e2fc76d67a9f0ee78c8dcbfc34
Formbook
2c5ac5f3342284ce40a4f199f9a2c1ec372e5063d4e6cea5b99936ff357797c0
Formbook
945e176b7aa6d3b13ca4f6cd758fe5ee04c49ab1778c2b5433166dfce5adc9e2
Formbook
a057aab2994c9b2d3214e2ebdfa28dcce023546bf7154c8832bd27112c693e86
Formbook
aa69a4dd3203b34b4a1dfdf334ba8b655768f6e6c46165a095497b45222580b5
Formbook
f2b532450ed44fa884c0ea547b17a6a11524c2abc5a0b8278143d0b26604bbf9
Formbook
+ 4'588 additional samples on MalwareBazaar
Result
Malware family:
agenttesla
Create hunting rule
Score:
  10/10
Tags:
family:agenttesla keylogger spyware stealer trojan
Link:
https://tria.ge/reports/240324-r3kedsdc76/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Suspicious use of SetThreadContext
Looks up external IP address via web service
AgentTesla
Unpacked files
SH256 hash:
bc39c3ba2ef220300f37e0ccffd84e387eaa28c831859c3588cdfdeec243b0c5
MD5 hash:
e4c53cafec45a303e00d4d7702b02822
SHA1 hash:
bf21964cd02330655a1eb04fb83ece35899977bf
Detections:
INDICATOR_EXE_Packed_SmartAssembly
Create hunting rule
Link:
https://www.unpac.me/results/f4d2131a-491f-4850-8417-a74b912e721b/
Parent samples :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 hash:
7c49dbcc0e39e1ca5bc2a96af4c7444ca8a432f6d4e823fc094a1285e8c0f00f
MD5 hash:
afb9dc939723a563b2f331e1fef040b5
SHA1 hash:
bcee92424b622f33359e54e5e75552f85a394cdf
Detections:
AgentTesla
Create hunting rule
win_agent_tesla_g2
Create hunting rule
INDICATOR_SUSPICIOUS_EXE_Referenfces_File_Transfer_Clients
Create hunting rule
Agenttesla_type2
Create hunting rule
INDICATOR_SUSPICIOUS_Binary_References_Browsers
Create hunting rule
INDICATOR_SUSPICIOUS_EXE_VaultSchemaGUID
Create hunting rule
INDICATOR_SUSPICIOUS_EXE_References_Messaging_Clients
Create hunting rule
INDICATOR_SUSPICIOUS_EXE_SandboxHookingDLL
Create hunting rule
INDICATOR_EXE_Packed_GEN01
Create hunting rule
INDICATOR_SUSPICIOUS_EXE_References_Confidential_Data_Store
Create hunting rule
Link:
https://www.unpac.me/results/f4d2131a-491f-4850-8417-a74b912e721b/
SH256 hash:
cac47ba12aca90e554fc2af8dea2be39cd1ab1604cceb16404c8905d8738c32f
MD5 hash:
d6e94f0e3573899e839ff348bf58a00b
SHA1 hash:
65be0d1bbe9408fcb764943a0634ff82a962ca51
Link:
https://www.unpac.me/results/f4d2131a-491f-4850-8417-a74b912e721b/
SH256 hash:
de9ebe2d6f481fb16f0b3151d2c39241b9d9cd8ce00644123f235abf5b9cdcfe
MD5 hash:
e026fee022250d21f128440b64e7467b
SHA1 hash:
14bdcbb6af485db5c467a094e3328d5560b722c5
Link:
https://www.unpac.me/results/f4d2131a-491f-4850-8417-a74b912e721b/
SH256 hash:
78b15621d0319e8b7a105e1aa9a1927fb434bfce29e2a4f56051f552e393f08a
MD5 hash:
777f716b47261f01d1f8d131c7b7c587
SHA1 hash:
ad6ecb132c05290ecd79784f6a8c1f074cb26b89
Link:
https://www.unpac.me/results/f4d2131a-491f-4850-8417-a74b912e721b/
Malware family:
AgentTesla
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/78b15621d031/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Malicious File
Score:
0.95
Link:
https://yomi.yoroi.company/submissions/78b15621d0319e8b7a105e1aa9a1927fb434bfce29e2a4f56051f552e393f08a

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:NET
Create hunting rule
Author:malware-lu
Rule name:NETexecutableMicrosoft
Create hunting rule
Author:malware-lu
Rule name:pe_imphash
Create hunting rule
Rule name:Skystars_Malware_Imphash
Create hunting rule
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

Formbook

Executable exe 78b15621d0319e8b7a105e1aa9a1927fb434bfce29e2a4f56051f552e393f08a

(this sample)

  
Delivery method
Distributed via e-mail attachment

BLint

The following table provides more information about this file using BLint. BLint is a Binary Linter to check the security properties, and capabilities in executables.

Findings
IDTitleSeverity
CHECK_AUTHENTICODEMissing Authenticodehigh
CHECK_DLL_CHARACTERISTICSMissing dll Security Characteristics (HIGH_ENTROPY_VA)high

Comments