formbook | cdb9573a0c285fafd96692bd52d8c89a9d5d67f5a66f38a43bf6a36e34efb95c

Analysis

max time kernel
22s
max time network
104s
platform
windows11-21h2_x64
resource
win11-20250410-en
resource tags

arch:x64arch:x86image:win11-20250410-enlocale:en-usos:windows11-21h2-x64system
submitted
19/04/2025, 14:55

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

Outstanding Invoice Payment00199pdf.exe
Size

642KB
MD5

9b2a1cefdfe5a139f0280c3ea3d3011f
SHA1

f7c7217d5cf033202ddc38d189d12287e09903d7
SHA256

54f50cdad3e5039d3207566e1b9de6e16913993ba2aa711e6f91a68e093ed9c4
SHA512

c6fe3e87eab347fa519b285b07e420eca261e56a777464cfaf37f00febaa6185d8d91b3dece74355604de6ed12b52e0f2845086e477b700adf3bc6cd03f28348
SSDEEP

12288:kqFCggCRxM6E1CpqSgcxOYqEEHhhHUiQEiYQsWZFOF/kR:L+6sE2EEBhHUiQEiLsIOY

Score

10^/10

formbook bi14 discovery execution rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

Version

4.1

Campaign

bi14

Decoy

ilansocials.online

rishticodiegfortyseven.online

ostase-ba.cfd

cinema.tech

omprasyacol.store

esir.shop

umhyal3gvbpl.xyz

lurv.wtf

aospin-sms.xyz

itness-apps-workout1.sbs

reshcarluxury.shop

3xq3.cyou

erraceheatpassion.lifestyle

octurasys.net

ilyrug.net

yj889.xyz

railertof.net

4270766.xyz

sduoduo11.sbs

oeboom.net

Signatures

Formbook
Formbook is a data stealing malware which is capable of stealing data.
trojan spyware stealer formbook
Formbook family
formbook

Formbook payload 2 IoCs

rat

resource	yara_rule
behavioral2/memory/4924-25-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral2/memory/4924-84-0x0000000000400000-0x000000000042F000-memory.dmp	formbook

Command and Scripting Interpreter: PowerShell 1 TTPs 2 IoCs

Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

execution

PowerShell

T1059.001

pid	Process
1164	powershell.exe
3108	powershell.exe

Uses the VBS compiler for execution 1 TTPs

Command and Scripting Interpreter
T1059
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 4 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	powershell.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	powershell.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Outstanding Invoice Payment00199pdf.exe

Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence execution

Scheduled Task

T1053.005

pid	Process
3420	schtasks.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
3444	Outstanding Invoice Payment00199pdf.exe
3444	Outstanding Invoice Payment00199pdf.exe
3444	Outstanding Invoice Payment00199pdf.exe
3444	Outstanding Invoice Payment00199pdf.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	3444	Outstanding Invoice Payment00199pdf.exe
Token: SeDebugPrivilege	1164	powershell.exe
Token: SeDebugPrivilege	3108	powershell.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 3444 wrote to memory of 1164	3444	Outstanding Invoice Payment00199pdf.exe	78
PID 3444 wrote to memory of 1164	3444	Outstanding Invoice Payment00199pdf.exe	78
PID 3444 wrote to memory of 1164	3444	Outstanding Invoice Payment00199pdf.exe	78
PID 3444 wrote to memory of 3108	3444	Outstanding Invoice Payment00199pdf.exe	80
PID 3444 wrote to memory of 3108	3444	Outstanding Invoice Payment00199pdf.exe	80
PID 3444 wrote to memory of 3108	3444	Outstanding Invoice Payment00199pdf.exe	80
PID 3444 wrote to memory of 3420	3444	Outstanding Invoice Payment00199pdf.exe	82
PID 3444 wrote to memory of 3420	3444	Outstanding Invoice Payment00199pdf.exe	82
PID 3444 wrote to memory of 3420	3444	Outstanding Invoice Payment00199pdf.exe	82

C:\Users\Admin\AppData\Local\Temp\Outstanding Invoice Payment00199pdf.exe
"C:\Users\Admin\AppData\Local\Temp\Outstanding Invoice Payment00199pdf.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3444
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Local\Temp\Outstanding Invoice Payment00199pdf.exe"
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  PID:1164
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\efQbHyNNWR.exe"
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  PID:3108
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\efQbHyNNWR" /XML "C:\Users\Admin\AppData\Local\Temp\tmpA587.tmp"
  2⤵
  - System Location Discovery: System Language Discovery
  - Scheduled Task/Job: Scheduled Task
  PID:3420
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe"
  2⤵
  PID:4924

Network

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

PowerShell

T1059.001

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Persistence

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Privilege Escalation

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_ndpyabtl.rdf.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmpA587.tmp

Filesize
1KB

MD5
4d5fa40966959e64a4f4052758402447

SHA1
5c74d1ce2c7dfff174657bb2d5efefbc7d07a3d1

SHA256
0afd4a4873e0cfd7ea8eb985ed625f1eab50688c48982faed58dfe914f4c0113

SHA512
8b191f78edb7da1855e0401753b383dd42484e8bea8478205b769666ce1fbcf5e7dc39952209b09be3caad2215a42239c8a1fa25c9637356a257151aab87efd4

Download Submit
memory/1164-73-0x0000000007000000-0x000000000700A000-memory.dmp

Filesize
40KB

Download
memory/1164-28-0x0000000074680000-0x0000000074E31000-memory.dmp

Filesize
7.7MB

Download
memory/1164-82-0x0000000074680000-0x0000000074E31000-memory.dmp

Filesize
7.7MB

Download
memory/1164-61-0x0000000006C40000-0x0000000006CE4000-memory.dmp

Filesize
656KB

Download
memory/1164-79-0x00000000072C0000-0x00000000072C8000-memory.dmp

Filesize
32KB

Download
memory/1164-60-0x00000000061F0000-0x000000000620E000-memory.dmp

Filesize
120KB

Download
memory/1164-49-0x00000000061A0000-0x00000000061EC000-memory.dmp

Filesize
304KB

Download
memory/1164-76-0x00000000071C0000-0x00000000071CE000-memory.dmp

Filesize
56KB

Download
memory/1164-50-0x0000000006C00000-0x0000000006C34000-memory.dmp

Filesize
208KB

Download
memory/1164-15-0x0000000002420000-0x0000000002456000-memory.dmp

Filesize
216KB

Download
memory/1164-16-0x0000000004F20000-0x000000000554A000-memory.dmp

Filesize
6.2MB

Download
memory/1164-17-0x0000000074680000-0x0000000074E31000-memory.dmp

Filesize
7.7MB

Download
memory/1164-18-0x0000000074680000-0x0000000074E31000-memory.dmp

Filesize
7.7MB

Download
memory/1164-21-0x0000000004C80000-0x0000000004CA2000-memory.dmp

Filesize
136KB

Download
memory/1164-51-0x0000000074F30000-0x0000000074F7C000-memory.dmp

Filesize
304KB

Download
memory/1164-72-0x0000000006F80000-0x0000000006F9A000-memory.dmp

Filesize
104KB

Download
memory/1164-71-0x00000000075C0000-0x0000000007C3A000-memory.dmp

Filesize
6.5MB

Download
memory/3108-19-0x0000000074680000-0x0000000074E31000-memory.dmp

Filesize
7.7MB

Download
memory/3108-75-0x0000000007740000-0x0000000007751000-memory.dmp

Filesize
68KB

Download
memory/3108-27-0x0000000005CE0000-0x0000000006037000-memory.dmp

Filesize
3.3MB

Download
memory/3108-74-0x00000000077C0000-0x0000000007856000-memory.dmp

Filesize
600KB

Download
memory/3108-23-0x0000000005C70000-0x0000000005CD6000-memory.dmp

Filesize
408KB

Download
memory/3108-22-0x0000000005C00000-0x0000000005C66000-memory.dmp

Filesize
408KB

Download
memory/3108-24-0x0000000074680000-0x0000000074E31000-memory.dmp

Filesize
7.7MB

Download
memory/3108-31-0x0000000074680000-0x0000000074E31000-memory.dmp

Filesize
7.7MB

Download
memory/3108-48-0x00000000061E0000-0x00000000061FE000-memory.dmp

Filesize
120KB

Download
memory/3108-77-0x0000000007780000-0x0000000007795000-memory.dmp

Filesize
84KB

Download
memory/3108-78-0x0000000007880000-0x000000000789A000-memory.dmp

Filesize
104KB

Download
memory/3108-62-0x0000000074F30000-0x0000000074F7C000-memory.dmp

Filesize
304KB

Download
memory/3108-83-0x0000000074680000-0x0000000074E31000-memory.dmp

Filesize
7.7MB

Download
memory/3444-3-0x0000000005B50000-0x0000000005BE2000-memory.dmp

Filesize
584KB

Download
memory/3444-4-0x0000000005CE0000-0x0000000005CEA000-memory.dmp

Filesize
40KB

Download
memory/3444-30-0x0000000074680000-0x0000000074E31000-memory.dmp

Filesize
7.7MB

Download
memory/3444-1-0x0000000000FE0000-0x0000000001084000-memory.dmp

Filesize
656KB

Download
memory/3444-6-0x0000000005DB0000-0x0000000005E4C000-memory.dmp

Filesize
624KB

Download
memory/3444-2-0x0000000006100000-0x00000000066A6000-memory.dmp

Filesize
5.6MB

Download
memory/3444-10-0x00000000087A0000-0x0000000008818000-memory.dmp

Filesize
480KB

Download
memory/3444-9-0x0000000074680000-0x0000000074E31000-memory.dmp

Filesize
7.7MB

Download
memory/3444-8-0x000000007468E000-0x000000007468F000-memory.dmp

Filesize
4KB

Download
memory/3444-7-0x00000000060F0000-0x0000000006102000-memory.dmp

Filesize
72KB

Download
memory/3444-0-0x000000007468E000-0x000000007468F000-memory.dmp

Filesize
4KB

Download
memory/3444-5-0x0000000074680000-0x0000000074E31000-memory.dmp

Filesize
7.7MB

Download
memory/4924-25-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/4924-84-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download