formbook | f3398e6a171a2dc31c171813aba4aba9e9d81921a65151f8c16d63df8e638c88

Analysis

max time kernel
150s
max time network
143s
platform
windows10-2004_x64
resource
win10v2004-20250410-en
resource tags

arch:x64arch:x86image:win10v2004-20250410-enlocale:en-usos:windows10-2004-x64system
submitted
19/04/2025, 08:25

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General

Target

nouacomandapdf.exe
Size

654KB
MD5

ceca2dff2ddf27ee53ad866b23535b48
SHA1

d9012c547137e1c643b436a25feab998a3a49c52
SHA256

f3398e6a171a2dc31c171813aba4aba9e9d81921a65151f8c16d63df8e638c88
SHA512

d37171eb6ac5ce0b4359911fee958daeecf5520a52dfc7fbf026c63eab12f7c68f2bc75f7efb0b2c0eac41877399bebcf81db7296b969a2777330cf6dba74ec2
SSDEEP

12288:cbN0Q5CmNR4Un7Z+51quHB2qCJtu9L0hX:W0aeU7SHBOJc9Ih

Score

10^/10

formbook kmge discovery persistence rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

Version

4.1

Campaign

kmge

Decoy

i54ly657ur.autos

stove-10000.bond

furkanenes.live

foziaclothing.shop

peron.app

landscaping-services-88568.bond

home-remodeling-96005.bond

offersnow-store.shop

apsida.tech

ux-design-courses-90368.bond

nb-event-b2b.online

2tdb3dk65m.skin

juniper.fit

eurosirel.info

web-cfe.one

a48268104.top

darkoxygen.info

beautysideup.shop

solar-battery-34557.bond

dib57.top

Signatures

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

Modifies WinLogon for persistence 2 TTPs 2 IoCs

persistence

Winlogon Helper DLL

T1547.004

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-2645532622-3298555945-705856666-1000\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe,C:\\Users\\Admin\\AppData\\Roaming\\Microsoft\\Windows\\Start Menu\\Programs\\Startup\\skype\\skype.exe,"	reg.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2645532622-3298555945-705856666-1000\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe,C:\\Users\\Admin\\AppData\\Roaming\\Microsoft\\Windows\\Start Menu\\Programs\\Startup\\skype\\skype.exe,"	reg.exe

Formbook payload 3 IoCs

rat

resource	yara_rule
behavioral1/memory/804-26-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral1/memory/804-28-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral1/memory/1440-30-0x00000000010E0000-0x000000000110F000-memory.dmp	formbook

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-2645532622-3298555945-705856666-1000\Control Panel\International\Geo\Nation	nouacomandapdf.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\skype\skype.exe	cmd.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\skype\skype.exe	cmd.exe

Executes dropped EXE 1 IoCs

pid	Process
4480	skype.exe

Suspicious use of SetThreadContext 4 IoCs

description	pid	Process	procid_target
PID 4480 set thread context of 804	4480	skype.exe	112
PID 804 set thread context of 3444	804	AddInProcess32.exe	56
PID 804 set thread context of 3444	804	AddInProcess32.exe	56
PID 1440 set thread context of 3444	1440	ipconfig.exe	56

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 14 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	skype.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	PING.EXE
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	PING.EXE
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	reg.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	PING.EXE
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	reg.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	PING.EXE
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	skype.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	ipconfig.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	nouacomandapdf.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

System Network Configuration Discovery: Internet Connection Discovery 1 TTPs 7 IoCs

Adversaries may check for Internet connectivity on compromised systems.

discovery

Internet Connection Discovery

T1016.001

pid	Process
3408	PING.EXE
4828	PING.EXE
5724	cmd.exe
6116	PING.EXE
1048	cmd.exe
1872	cmd.exe
3636	PING.EXE

Gathers network information 2 TTPs 1 IoCs

Uses commandline utility to view network configuration.

System Information Discovery

T1082

Command and Scripting Interpreter

T1059

pid	Process
1440	ipconfig.exe

Runs ping.exe 1 TTPs 4 IoCs

Remote System Discovery

T1018

pid	Process
4828	PING.EXE
6116	PING.EXE
3636	PING.EXE
3408	PING.EXE

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
3952	nouacomandapdf.exe
3952	nouacomandapdf.exe
4980	skype.exe
4980	skype.exe
4980	skype.exe
4980	skype.exe
4980	skype.exe
4980	skype.exe
4980	skype.exe
4980	skype.exe
4980	skype.exe
4980	skype.exe
4980	skype.exe
4980	skype.exe
4980	skype.exe
4980	skype.exe
4980	skype.exe
4980	skype.exe
4980	skype.exe
4980	skype.exe
4980	skype.exe
4980	skype.exe
4980	skype.exe
4980	skype.exe
4980	skype.exe
4980	skype.exe
4980	skype.exe
4980	skype.exe
4480	skype.exe
4480	skype.exe
4480	skype.exe
804	AddInProcess32.exe
804	AddInProcess32.exe
804	AddInProcess32.exe
804	AddInProcess32.exe
804	AddInProcess32.exe
804	AddInProcess32.exe
1440	ipconfig.exe
1440	ipconfig.exe
1440	ipconfig.exe
1440	ipconfig.exe
1440	ipconfig.exe
1440	ipconfig.exe
1440	ipconfig.exe
1440	ipconfig.exe
1440	ipconfig.exe
1440	ipconfig.exe
1440	ipconfig.exe
1440	ipconfig.exe
1440	ipconfig.exe
1440	ipconfig.exe
1440	ipconfig.exe
1440	ipconfig.exe
1440	ipconfig.exe
1440	ipconfig.exe
1440	ipconfig.exe
1440	ipconfig.exe
1440	ipconfig.exe
1440	ipconfig.exe
1440	ipconfig.exe
1440	ipconfig.exe
1440	ipconfig.exe
1440	ipconfig.exe
1440	ipconfig.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
3444	Explorer.EXE

Suspicious behavior: MapViewOfSection 6 IoCs

pid	Process
804	AddInProcess32.exe
804	AddInProcess32.exe
804	AddInProcess32.exe
804	AddInProcess32.exe
1440	ipconfig.exe
1440	ipconfig.exe

Suspicious behavior: RenamesItself 1 IoCs

pid	Process
3952	nouacomandapdf.exe

Suspicious use of AdjustPrivilegeToken 5 IoCs

description	pid	Process
Token: SeDebugPrivilege	3952	nouacomandapdf.exe
Token: SeDebugPrivilege	4980	skype.exe
Token: SeDebugPrivilege	4480	skype.exe
Token: SeDebugPrivilege	804	AddInProcess32.exe
Token: SeDebugPrivilege	1440	ipconfig.exe

Suspicious use of UnmapMainImage 1 IoCs

pid	Process
3444	Explorer.EXE

Suspicious use of WriteProcessMemory 45 IoCs

description	pid	Process	procid_target
PID 3952 wrote to memory of 5724	3952	nouacomandapdf.exe	90
PID 3952 wrote to memory of 5724	3952	nouacomandapdf.exe	90
PID 3952 wrote to memory of 5724	3952	nouacomandapdf.exe	90
PID 5724 wrote to memory of 4828	5724	cmd.exe	92
PID 5724 wrote to memory of 4828	5724	cmd.exe	92
PID 5724 wrote to memory of 4828	5724	cmd.exe	92
PID 3952 wrote to memory of 4980	3952	nouacomandapdf.exe	93
PID 3952 wrote to memory of 4980	3952	nouacomandapdf.exe	93
PID 3952 wrote to memory of 4980	3952	nouacomandapdf.exe	93
PID 4980 wrote to memory of 1048	4980	skype.exe	94
PID 4980 wrote to memory of 1048	4980	skype.exe	94
PID 4980 wrote to memory of 1048	4980	skype.exe	94
PID 1048 wrote to memory of 6116	1048	cmd.exe	96
PID 1048 wrote to memory of 6116	1048	cmd.exe	96
PID 1048 wrote to memory of 6116	1048	cmd.exe	96
PID 4980 wrote to memory of 1872	4980	skype.exe	100
PID 4980 wrote to memory of 1872	4980	skype.exe	100
PID 4980 wrote to memory of 1872	4980	skype.exe	100
PID 1872 wrote to memory of 3636	1872	cmd.exe	102
PID 1872 wrote to memory of 3636	1872	cmd.exe	102
PID 1872 wrote to memory of 3636	1872	cmd.exe	102
PID 5724 wrote to memory of 904	5724	cmd.exe	106
PID 5724 wrote to memory of 904	5724	cmd.exe	106
PID 5724 wrote to memory of 904	5724	cmd.exe	106
PID 1048 wrote to memory of 336	1048	cmd.exe	107
PID 1048 wrote to memory of 336	1048	cmd.exe	107
PID 1048 wrote to memory of 336	1048	cmd.exe	107
PID 1872 wrote to memory of 3408	1872	cmd.exe	110
PID 1872 wrote to memory of 3408	1872	cmd.exe	110
PID 1872 wrote to memory of 3408	1872	cmd.exe	110
PID 1872 wrote to memory of 4480	1872	cmd.exe	111
PID 1872 wrote to memory of 4480	1872	cmd.exe	111
PID 1872 wrote to memory of 4480	1872	cmd.exe	111
PID 4480 wrote to memory of 804	4480	skype.exe	112
PID 4480 wrote to memory of 804	4480	skype.exe	112
PID 4480 wrote to memory of 804	4480	skype.exe	112
PID 4480 wrote to memory of 804	4480	skype.exe	112
PID 4480 wrote to memory of 804	4480	skype.exe	112
PID 4480 wrote to memory of 804	4480	skype.exe	112
PID 3444 wrote to memory of 1440	3444	Explorer.EXE	121
PID 3444 wrote to memory of 1440	3444	Explorer.EXE	121
PID 3444 wrote to memory of 1440	3444	Explorer.EXE	121
PID 1440 wrote to memory of 2200	1440	ipconfig.exe	123
PID 1440 wrote to memory of 2200	1440	ipconfig.exe	123
PID 1440 wrote to memory of 2200	1440	ipconfig.exe	123

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:3444
- C:\Users\Admin\AppData\Local\Temp\nouacomandapdf.exe
  "C:\Users\Admin\AppData\Local\Temp\nouacomandapdf.exe"
  2⤵
  - Checks computer location settings
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: RenamesItself
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:3952
- - C:\Windows\SysWOW64\cmd.exe
    "cmd" /c ping 127.0.0.1 -n 9 > nul && REG ADD "HKCU\Software\Microsoft\Windows NT\CurrentVersion\Winlogon" /f /v "Shell" /t REG_SZ /d "explorer.exe,C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\skype\skype.exe,"
    3⤵
    - System Location Discovery: System Language Discovery
    - System Network Configuration Discovery: Internet Connection Discovery
    - Suspicious use of WriteProcessMemory
    PID:5724
  - - C:\Windows\SysWOW64\PING.EXE
      ping 127.0.0.1 -n 9
      4⤵
      System Location Discovery: System Language Discovery
      System Network Configuration Discovery: Internet Connection Discovery
      Runs ping.exe
      PID:4828
  - - C:\Windows\SysWOW64\reg.exe
      REG ADD "HKCU\Software\Microsoft\Windows NT\CurrentVersion\Winlogon" /f /v "Shell" /t REG_SZ /d "explorer.exe,C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\skype\skype.exe,"
      4⤵
      Modifies WinLogon for persistence
      System Location Discovery: System Language Discovery
      PID:904
- - C:\Users\Admin\AppData\Local\Temp\skype.exe
    "C:\Users\Admin\AppData\Local\Temp\skype.exe"
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:4980
  - - C:\Windows\SysWOW64\cmd.exe
      "cmd" /c ping 127.0.0.1 -n 8 > nul && REG ADD "HKCU\Software\Microsoft\Windows NT\CurrentVersion\Winlogon" /f /v "Shell" /t REG_SZ /d "explorer.exe,C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\skype\skype.exe,"
      4⤵
      System Location Discovery: System Language Discovery
      System Network Configuration Discovery: Internet Connection Discovery
      Suspicious use of WriteProcessMemory
      PID:1048
    - - C:\Windows\SysWOW64\PING.EXE
        
        ping 127.0.0.1 -n 8
        5⤵
        System Location Discovery: System Language Discovery
        System Network Configuration Discovery: Internet Connection Discovery
        Runs ping.exe
        
        PID:6116
    - - C:\Windows\SysWOW64\reg.exe
        
        REG ADD "HKCU\Software\Microsoft\Windows NT\CurrentVersion\Winlogon" /f /v "Shell" /t REG_SZ /d "explorer.exe,C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\skype\skype.exe,"
        5⤵
        Modifies WinLogon for persistence
        System Location Discovery: System Language Discovery
        
        PID:336
  - - C:\Windows\SysWOW64\cmd.exe
      "cmd" /c ping 127.0.0.1 -n 11 > nul && copy "C:\Users\Admin\AppData\Local\Temp\skype.exe" "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\skype\skype.exe" && ping 127.0.0.1 -n 11 > nul && "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\skype\skype.exe"
      4⤵
      Drops startup file
      System Location Discovery: System Language Discovery
      System Network Configuration Discovery: Internet Connection Discovery
      Suspicious use of WriteProcessMemory
      PID:1872
    - - C:\Windows\SysWOW64\PING.EXE
        
        ping 127.0.0.1 -n 11
        5⤵
        System Location Discovery: System Language Discovery
        System Network Configuration Discovery: Internet Connection Discovery
        Runs ping.exe
        
        PID:3636
    - - C:\Windows\SysWOW64\PING.EXE
        
        ping 127.0.0.1 -n 11
        5⤵
        System Location Discovery: System Language Discovery
        System Network Configuration Discovery: Internet Connection Discovery
        Runs ping.exe
        
        PID:3408
    - - C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\skype\skype.exe
        
        "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\skype\skype.exe"
        5⤵
        Executes dropped EXE
        Suspicious use of SetThreadContext
        System Location Discovery: System Language Discovery
        Suspicious behavior: EnumeratesProcesses
        Suspicious use of AdjustPrivilegeToken
        Suspicious use of WriteProcessMemory
        
        PID:4480
      - C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe
        
        "C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe"
        6⤵
        Suspicious use of SetThreadContext
        Suspicious behavior: EnumeratesProcesses
        Suspicious behavior: MapViewOfSection
        Suspicious use of AdjustPrivilegeToken
        
        PID:804
- C:\Windows\SysWOW64\ipconfig.exe
  "C:\Windows\SysWOW64\ipconfig.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Gathers network information
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:1440
- - C:\Windows\SysWOW64\cmd.exe
    /c del "C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe"
    3⤵
    - System Location Discovery: System Language Discovery
    PID:2200

Network

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

Persistence

Boot or Logon Autostart Execution

T1547

Winlogon Helper DLL

T1547.004

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Winlogon Helper DLL

T1547.004

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

Remote System Discovery

T1018

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

System Network Configuration Discovery

T1016

Internet Connection Discovery

T1016.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\skype.exe.log

Filesize
1KB

MD5
f7e75d0af51afad1f3d4632dd430539b

SHA1
211476029da6303687348fe924d16ec4375899c5

SHA256
ee338c5e7245b30cc36cbbefd38037dc662a67f5725f98fa3bee633a42a74116

SHA512
d813d7c1ea2ecc284fb79b6b4cdc8ffcd5fcaad65254e3fd117d64b12864afcf139ce420e77c140f64794360bb9e95caae876affa7c76c8526ca51a99e8a78aa

Download Submit
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\skype\skype.exe

Filesize
654KB

MD5
ceca2dff2ddf27ee53ad866b23535b48

SHA1
d9012c547137e1c643b436a25feab998a3a49c52

SHA256
f3398e6a171a2dc31c171813aba4aba9e9d81921a65151f8c16d63df8e638c88

SHA512
d37171eb6ac5ce0b4359911fee958daeecf5520a52dfc7fbf026c63eab12f7c68f2bc75f7efb0b2c0eac41877399bebcf81db7296b969a2777330cf6dba74ec2

Download Submit
memory/804-28-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/804-26-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/1440-30-0x00000000010E0000-0x000000000110F000-memory.dmp

Filesize
188KB

Download
memory/1440-29-0x00000000000D0000-0x00000000000DB000-memory.dmp

Filesize
44KB

Download
memory/3444-32-0x0000000008910000-0x00000000089E4000-memory.dmp

Filesize
848KB

Download
memory/3952-12-0x0000000074710000-0x0000000074EC0000-memory.dmp

Filesize
7.7MB

Download
memory/3952-5-0x0000000005A20000-0x0000000005ABC000-memory.dmp

Filesize
624KB

Download
memory/3952-9-0x0000000005E90000-0x0000000005E9A000-memory.dmp

Filesize
40KB

Download
memory/3952-10-0x0000000007370000-0x000000000789C000-memory.dmp

Filesize
5.2MB

Download
memory/3952-1-0x0000000000490000-0x000000000053A000-memory.dmp

Filesize
680KB

Download
memory/3952-0-0x000000007471E000-0x000000007471F000-memory.dmp

Filesize
4KB

Download
memory/3952-2-0x0000000005470000-0x0000000005A14000-memory.dmp

Filesize
5.6MB

Download
memory/3952-3-0x0000000004F60000-0x0000000004FF2000-memory.dmp

Filesize
584KB

Download
memory/3952-7-0x0000000074710000-0x0000000074EC0000-memory.dmp

Filesize
7.7MB

Download
memory/3952-8-0x00000000053D0000-0x00000000053F6000-memory.dmp

Filesize
152KB

Download
memory/3952-4-0x0000000005000000-0x0000000005354000-memory.dmp

Filesize
3.3MB

Download
memory/3952-6-0x0000000004F10000-0x0000000004F32000-memory.dmp

Filesize
136KB

Download
memory/4480-25-0x0000000007770000-0x0000000007776000-memory.dmp

Filesize
24KB

Download
memory/4480-24-0x0000000007740000-0x000000000775A000-memory.dmp

Filesize
104KB

Download
memory/4480-23-0x00000000051D0000-0x0000000005524000-memory.dmp

Filesize
3.3MB

Download
memory/4980-16-0x0000000074710000-0x0000000074EC0000-memory.dmp

Filesize
7.7MB

Download
memory/4980-14-0x0000000074710000-0x0000000074EC0000-memory.dmp

Filesize
7.7MB

Download
memory/4980-13-0x0000000074710000-0x0000000074EC0000-memory.dmp

Filesize
7.7MB

Download