MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 a94e3056811ce51bf44ef37f50f81710a9144b62871de9dbff328e3c2e908fe2. 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: 13


Intelligence 13 IOCs YARA 4 File information Comments
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SHA256 hash: a94e3056811ce51bf44ef37f50f81710a9144b62871de9dbff328e3c2e908fe2
SHA3-384 hash: 5e0e4e91a870b0272ad123ff242974b60a9b88b631487bd8d63e617f96a88a3fbccba395607050ba3bbb9f3164d465f3
SHA1 hash: 7e7fd6bfb0757884d99aba718354343645478ed4
MD5 hash: 0781a0bfe845aaa0de5ebecebe1ab1c5
humanhash: twelve-network-eighteen-paris
File name:PO#GREEN AURA.pdf.scr
Download: download sample
Signature Formbook
Create hunting rule
File size:30'720 bytes
First seen:2025-02-26 07:52:03 UTC
Last seen:2025-03-10 12:08:08 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'743 x AgentTesla, 19'608 x Formbook, 12'242 x SnakeKeylogger)
ssdeep 768:onBoRDVAbjlie+U6GIsDzi4MzFOyRncnVIrg59H:4sJ/sDzivzFhWnVIr0H
Threatray 2'944 similar samples on MalwareBazaar
TLSH T111D2191BB7CE89A0D684C73FCDD750204B34E292B66BDF0F388E134A585376AC90566B
TrID 71.1% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
10.2% (.EXE) Win64 Executable (generic) (10522/11/4)
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)
Magika pebin
Reporter threatcat_ch
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
3
# of downloads :
479
Origin country :
CH CH
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
PO#GREEN AURA.pdf.scr
Verdict:
Malicious activity
Analysis date:
2025-02-26 08:17:43 UTC
Tags:
purecrypter netreactor
Link:
https://app.any.run/tasks/94aeb1ee-72ce-4fc1-87f6-d62a813dbd76

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection(s):
SecuriteInfo.com.Win32.DropperX-gen.2957.15079.UNOFFICIAL
Create hunting rule

Verdict:
Malicious
Score:
96.5%
Link:
https://cyber-fortress.com/docs/result/index.php?id=67bec87328ab76d43a5d3676
Tags:
underscore autorun
Result
Verdict:
Malware
Maliciousness:

Behaviour
Сreating synchronization primitives
Connection attempt
Sending an HTTP GET request
Creating a file in the %AppData% directory
Launching a process
Enabling autorun by creating a file
Unauthorized injection to a system process
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
masquerade net_reactor obfuscated obfuscated packed
Link:
https://www.filescan.io/uploads/67bec82e3afc3763bec751bc/reports/6f2a711f-4378-4699-8ed9-c93f77d3fa0c/overview
Verdict:
Malicious
Labled as:
Win/malicious_confidence_70%
Link:
https://www.hybrid-analysis.com/sample/a94e3056811ce51bf44ef37f50f81710a9144b62871de9dbff328e3c2e908fe2
Result
Verdict:
UNKNOWN
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
Link:
https://analyze.intezer.com/analyses/dba81a0d-0401-4242-9b31-0bdee4613795
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1624383
Signature
.NET source code contains potential unpacker
Drops VBS files to the startup folder
Found direct / indirect Syscall (likely to bypass EDR)
Initial sample is a PE file and has a suspicious name
Injects a PE file into a foreign processes
Joe Sandbox ML detected suspicious sample
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 dropped file
Multi AV Scanner detection for submitted file
Performs DNS queries to domains with low reputation
Queues an APC in another process (thread injection)
Sigma detected: Drops script at startup location
Sigma detected: WScript or CScript Dropper
Suricata IDS alerts for network traffic
Switches to a custom stack to bypass stack traces
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 steal Mail credentials (via file / registry access)
Uses an obfuscated file name to hide its real file extension (double extension)
Uses netsh to modify the Windows network and firewall settings
Windows Scripting host queries suspicious COM object (likely to drop second stage)
Writes to foreign memory regions
Yara detected AntiVM3
Yara detected Costura Assembly Loader
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1624383 Sample: PO#GREEN AURA.pdf.scr.exe Startdate: 26/02/2025 Architecture: WINDOWS Score: 100 42 www.otonix.xyz 2->42 44 www.noudge.xyz 2->44 46 15 other IPs or domains 2->46 64 Suricata IDS alerts for network traffic 2->64 66 Multi AV Scanner detection for submitted file 2->66 68 Yara detected FormBook 2->68 72 10 other signatures 2->72 10 PO#GREEN AURA.pdf.scr.exe 15 5 2->10         started        15 wscript.exe 1 2->15         started        signatures3 70 Performs DNS queries to domains with low reputation 44->70 process4 dnsIp5 48 174.138.179.43, 49705, 49709, 80 IS-AS-1US United States 10->48 36 C:\Users\user\AppData\Roaming\TypeName.exe, PE32 10->36 dropped 38 C:\Users\...\TypeName.exe:Zone.Identifier, ASCII 10->38 dropped 40 C:\Users\user\AppData\...\TypeName.vbs, ASCII 10->40 dropped 84 Tries to detect sandboxes and other dynamic analysis tools (process name or module or function) 10->84 86 Writes to foreign memory regions 10->86 88 Injects a PE file into a foreign processes 10->88 17 InstallUtil.exe 10->17         started        90 Windows Scripting host queries suspicious COM object (likely to drop second stage) 15->90 20 TypeName.exe 14 2 15->20         started        file6 signatures7 process8 signatures9 56 Maps a DLL or memory area into another process 17->56 22 w00e8WReBY2Eca7REC.exe 17->22 injected 58 Multi AV Scanner detection for dropped file 20->58 60 Writes to foreign memory regions 20->60 62 Injects a PE file into a foreign processes 20->62 25 InstallUtil.exe 20->25         started        process10 signatures11 74 Found direct / indirect Syscall (likely to bypass EDR) 22->74 27 netsh.exe 13 22->27         started        process12 signatures13 76 Tries to steal Mail credentials (via file / registry access) 27->76 78 Tries to harvest and steal browser information (history, passwords, etc) 27->78 80 Modifies the context of a thread in another process (thread injection) 27->80 82 3 other signatures 27->82 30 w00e8WReBY2Eca7REC.exe 27->30 injected 34 firefox.exe 27->34         started        process14 dnsIp15 50 www.mobi-phone.net 104.166.78.40, 49711, 80 QUICKPACKETUS United States 30->50 52 www.yizhiboba.net 192.186.58.31, 49726, 49727, 49728 PING-GLOBAL-ASPingGlobalAmsterdamPOPASNNL United States 30->52 54 8 other IPs or domains 30->54 92 Found direct / indirect Syscall (likely to bypass EDR) 30->92 signatures16
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/a94e3056811ce51bf44ef37f50f81710a9144b62871de9dbff328e3c2e908fe2
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/a94e3056811ce51bf44ef37f50f81710a9144b62871de9dbff328e3c2e908fe2/
Threat name:
Win32.Backdoor.FormBook
Create hunting rule
Status:
Malicious
First seen:
2025-02-26 07:26:32 UTC
File Type:
PE (.Net Exe)
Extracted files:
1
AV detection:
18 of 24 (75.00%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=vfhdavubdtsrx5co6n7vb6axccuris3cq4o6tw77gkhdyluqr7ra._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Similar samples:
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2f1ffb5dca9c01226ba8081747a61288a63f048eda76ce995970568a41a3fbbc
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dda65ed23373504099b4ef1fd883eca088c8664db398909dda87af9d4a02bdf1
Formbook
error
Formbook
+ 2'934 additional samples on MalwareBazaar
Result
Malware family:
n/a
Score:
  10/10
Tags:
discovery
Link:
https://tria.ge/reports/250226-jqf77szlz5/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Program crash
System Location Discovery: System Language Discovery
Suspicious use of SetThreadContext
Drops startup file
Suspicious use of NtCreateUserProcessOtherParentProcess
Verdict:
Suspicious
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/a056f8c2-05c5-4978-9bc8-47478ab39bf6
Unpacked files
SH256 hash:
a94e3056811ce51bf44ef37f50f81710a9144b62871de9dbff328e3c2e908fe2
MD5 hash:
0781a0bfe845aaa0de5ebecebe1ab1c5
SHA1 hash:
7e7fd6bfb0757884d99aba718354343645478ed4
Link:
https://www.unpac.me/results/5bbe77b4-9b47-4316-947a-cbb0b259be90/
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Formbook
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/a94e3056811ce51bf44ef37f50f81710a9144b62871de9dbff328e3c2e908fe2

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 a94e3056811ce51bf44ef37f50f81710a9144b62871de9dbff328e3c2e908fe2

(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 (GUARD_CF)high

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