formbook | 3a59a45b9ea6320db9a64910e02ea9d69419977c6dd5841752bae3b4fbbb661c

Analysis

max time kernel
148s
max time network
139s
platform
windows10-2004_x64
resource
win10v2004-20250314-en
resource tags

arch:x64arch:x86image:win10v2004-20250314-enlocale:en-usos:windows10-2004-x64system
submitted
30/03/2025, 19:10

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General

Target

ETA BL PRO987659 FEDHL8998pdf.exe
Size

1.0MB
MD5

36a044e6dd5a64160bed8d90f8cca6d3
SHA1

144e1408da99b2776249ecdb2bcf0bc259a2695c
SHA256

3a59a45b9ea6320db9a64910e02ea9d69419977c6dd5841752bae3b4fbbb661c
SHA512

256b902c0a8770ca51ecc4272e2c063c0d3131ee96c328411bd81851eeeef80126c09cc5e6abd3344b57d486bbb8ff2c2a6cce65d8696e41503e4fcf85e1a994
SSDEEP

24576:0Cdxte/80jYLT3U1jfsWaHQ7GKmkCuUHQ:lw80cTsjkWaHQ7VrCuN

Score

10^/10

formbook bn02 discovery rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

Version

4.1

Campaign

bn02

Decoy

atoto.online

iberdata.xyz

irinevlerbombaci.xyz

ofas-district.world

ar-loans-35530.bond

heneapolis.city

istapro.shop

lectronics-engineering.cfd

pecoincopilot.xyz

ravelconverter.net

td0t.info

ifestylebonus.pro

v-finance.info

uenstigesofas.today

upiterassistant.xyz

vitance.digital

uperstash.xyz

ursing-home-43203.bond

uefana.biz

inegameyz.digital

Signatures

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

Formbook payload 3 IoCs

rat

resource	yara_rule
behavioral2/memory/4960-11-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral2/memory/4960-14-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral2/memory/4720-19-0x00000000003A0000-0x00000000003CF000-memory.dmp	formbook

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 1280 set thread context of 4960	1280	ETA BL PRO987659 FEDHL8998pdf.exe	89
PID 4960 set thread context of 3384	4960	svchost.exe	55
PID 4720 set thread context of 3384	4720	wscript.exe	55

Program crash 1 IoCs

pid	pid_target	Process	procid_target
4572	1280	WerFault.exe	85

System Location Discovery: System Language Discovery 1 TTPs 3 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	ETA BL PRO987659 FEDHL8998pdf.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	wscript.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Modifies registry class 2 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{4336a54d-038b-4685-ab02-99bb52d3fb8b}\Instance\	Explorer.EXE
Key created	\REGISTRY\USER\S-1-5-21-814918696-1585701690-3140955116-1000_Classes\CLSID\{018D5C66-4533-4307-9B53-224DE2ED1FE6}\Instance\	Explorer.EXE

Suspicious behavior: EnumeratesProcesses 62 IoCs

pid	Process
4960	svchost.exe
4960	svchost.exe
4960	svchost.exe
4960	svchost.exe
4720	wscript.exe
4720	wscript.exe
4720	wscript.exe
4720	wscript.exe
4720	wscript.exe
4720	wscript.exe
4720	wscript.exe
4720	wscript.exe
4720	wscript.exe
4720	wscript.exe
4720	wscript.exe
4720	wscript.exe
4720	wscript.exe
4720	wscript.exe
4720	wscript.exe
4720	wscript.exe
4720	wscript.exe
4720	wscript.exe
4720	wscript.exe
4720	wscript.exe
4720	wscript.exe
4720	wscript.exe
4720	wscript.exe
4720	wscript.exe
4720	wscript.exe
4720	wscript.exe
4720	wscript.exe
4720	wscript.exe
4720	wscript.exe
4720	wscript.exe
4720	wscript.exe
4720	wscript.exe
4720	wscript.exe
4720	wscript.exe
4720	wscript.exe
4720	wscript.exe
4720	wscript.exe
4720	wscript.exe
4720	wscript.exe
4720	wscript.exe
4720	wscript.exe
4720	wscript.exe
4720	wscript.exe
4720	wscript.exe
4720	wscript.exe
4720	wscript.exe
4720	wscript.exe
4720	wscript.exe
4720	wscript.exe
4720	wscript.exe
4720	wscript.exe
4720	wscript.exe
4720	wscript.exe
4720	wscript.exe
4720	wscript.exe
4720	wscript.exe
4720	wscript.exe
4720	wscript.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
3384	Explorer.EXE

Suspicious behavior: MapViewOfSection 6 IoCs

pid	Process
1280	ETA BL PRO987659 FEDHL8998pdf.exe
4960	svchost.exe
4960	svchost.exe
4960	svchost.exe
4720	wscript.exe
4720	wscript.exe

Suspicious use of AdjustPrivilegeToken 6 IoCs

description	pid	Process
Token: SeDebugPrivilege	4960	svchost.exe
Token: SeShutdownPrivilege	3384	Explorer.EXE
Token: SeCreatePagefilePrivilege	3384	Explorer.EXE
Token: SeShutdownPrivilege	3384	Explorer.EXE
Token: SeCreatePagefilePrivilege	3384	Explorer.EXE
Token: SeDebugPrivilege	4720	wscript.exe

Suspicious use of FindShellTrayWindow 4 IoCs

pid	Process
1280	ETA BL PRO987659 FEDHL8998pdf.exe
1280	ETA BL PRO987659 FEDHL8998pdf.exe
3384	Explorer.EXE
3384	Explorer.EXE

Suspicious use of SendNotifyMessage 2 IoCs

pid	Process
1280	ETA BL PRO987659 FEDHL8998pdf.exe
1280	ETA BL PRO987659 FEDHL8998pdf.exe

Suspicious use of UnmapMainImage 1 IoCs

pid	Process
3384	Explorer.EXE

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 1280 wrote to memory of 4960	1280	ETA BL PRO987659 FEDHL8998pdf.exe	89
PID 1280 wrote to memory of 4960	1280	ETA BL PRO987659 FEDHL8998pdf.exe	89
PID 1280 wrote to memory of 4960	1280	ETA BL PRO987659 FEDHL8998pdf.exe	89
PID 1280 wrote to memory of 4960	1280	ETA BL PRO987659 FEDHL8998pdf.exe	89
PID 3384 wrote to memory of 4720	3384	Explorer.EXE	93
PID 3384 wrote to memory of 4720	3384	Explorer.EXE	93
PID 3384 wrote to memory of 4720	3384	Explorer.EXE	93
PID 4720 wrote to memory of 5284	4720	wscript.exe	99
PID 4720 wrote to memory of 5284	4720	wscript.exe	99
PID 4720 wrote to memory of 5284	4720	wscript.exe	99

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Modifies registry class
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:3384
- C:\Users\Admin\AppData\Local\Temp\ETA BL PRO987659 FEDHL8998pdf.exe
  "C:\Users\Admin\AppData\Local\Temp\ETA BL PRO987659 FEDHL8998pdf.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of FindShellTrayWindow
  - Suspicious use of SendNotifyMessage
  - Suspicious use of WriteProcessMemory
  PID:1280
- - C:\Windows\SysWOW64\svchost.exe
    "C:\Users\Admin\AppData\Local\Temp\ETA BL PRO987659 FEDHL8998pdf.exe"
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious behavior: MapViewOfSection
    - Suspicious use of AdjustPrivilegeToken
    PID:4960
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 1280 -s 696
    3⤵
    - Program crash
    PID:4572
- C:\Windows\SysWOW64\wscript.exe
  "C:\Windows\SysWOW64\wscript.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:4720
- - C:\Windows\SysWOW64\cmd.exe
    /c del "C:\Windows\SysWOW64\svchost.exe"
    3⤵
    - System Location Discovery: System Language Discovery
    PID:5284

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 412 -p 1280 -ip 1280
1⤵
PID:4604

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/1280-10-0x0000000003B40000-0x0000000003B44000-memory.dmp

Filesize
16KB

Download
memory/3384-25-0x0000000008B70000-0x0000000008CDE000-memory.dmp

Filesize
1.4MB

Download
memory/3384-23-0x0000000008B70000-0x0000000008CDE000-memory.dmp

Filesize
1.4MB

Download
memory/3384-22-0x0000000008B70000-0x0000000008CDE000-memory.dmp

Filesize
1.4MB

Download
memory/3384-20-0x0000000007A90000-0x0000000007C19000-memory.dmp

Filesize
1.5MB

Download
memory/3384-16-0x0000000007A90000-0x0000000007C19000-memory.dmp

Filesize
1.5MB

Download
memory/4720-17-0x0000000000040000-0x0000000000067000-memory.dmp

Filesize
156KB

Download
memory/4720-18-0x0000000000040000-0x0000000000067000-memory.dmp

Filesize
156KB

Download
memory/4720-19-0x00000000003A0000-0x00000000003CF000-memory.dmp

Filesize
188KB

Download
memory/4960-14-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/4960-15-0x00000000011E0000-0x00000000011F4000-memory.dmp

Filesize
80KB

Download
memory/4960-12-0x0000000001300000-0x000000000164A000-memory.dmp

Filesize
3.3MB

Download
memory/4960-11-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download