formbook | f3398e6a171a2dc31c171813aba4aba9e9d81921a65151f8c16d63df8e638c88

Analysis

max time kernel
149s
max time network
109s
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, 08:20

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General

Target

noua comanda pdf.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-1-5-21-2787523927-1212474705-3964982594-1000\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-1-5-21-2787523927-1212474705-3964982594-1000\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 2 IoCs

rat

resource	yara_rule
behavioral2/memory/4848-26-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral2/memory/4848-28-0x0000000000400000-0x000000000042F000-memory.dmp	formbook

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
1192	skype.exe

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 1192 set thread context of 4848	1192	skype.exe	98
PID 4848 set thread context of 3244	4848	AddInProcess32.exe	52
PID 4848 set thread context of 3244	4848	AddInProcess32.exe	52

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 12 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	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	skype.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	reg.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	noua comanda pdf.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	PING.EXE
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	PING.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
4060	PING.EXE
4740	cmd.exe
4684	PING.EXE
4984	cmd.exe
4440	PING.EXE
2148	PING.EXE
2408	cmd.exe

Runs ping.exe 1 TTPs 4 IoCs

Remote System Discovery

T1018

pid	Process
4684	PING.EXE
4440	PING.EXE
2148	PING.EXE
4060	PING.EXE

Suspicious behavior: EnumeratesProcesses 33 IoCs

pid	Process
1804	noua comanda pdf.exe
1804	noua comanda pdf.exe
1540	skype.exe
1540	skype.exe
1540	skype.exe
1540	skype.exe
1540	skype.exe
1540	skype.exe
1540	skype.exe
1540	skype.exe
1540	skype.exe
1540	skype.exe
1540	skype.exe
1540	skype.exe
1540	skype.exe
1540	skype.exe
1540	skype.exe
1540	skype.exe
1540	skype.exe
1540	skype.exe
1540	skype.exe
1540	skype.exe
1540	skype.exe
1540	skype.exe
1192	skype.exe
1192	skype.exe
1192	skype.exe
4848	AddInProcess32.exe
4848	AddInProcess32.exe
4848	AddInProcess32.exe
4848	AddInProcess32.exe
4848	AddInProcess32.exe
4848	AddInProcess32.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
3244	Explorer.EXE

Suspicious behavior: MapViewOfSection 2 IoCs

pid	Process
4848	AddInProcess32.exe
4848	AddInProcess32.exe

Suspicious behavior: RenamesItself 1 IoCs

pid	Process
1804	noua comanda pdf.exe

Suspicious use of AdjustPrivilegeToken 34 IoCs

description	pid	Process
Token: SeDebugPrivilege	1804	noua comanda pdf.exe
Token: SeDebugPrivilege	1540	skype.exe
Token: SeDebugPrivilege	1192	skype.exe
Token: SeDebugPrivilege	4848	AddInProcess32.exe
Token: SeShutdownPrivilege	3244	Explorer.EXE
Token: SeCreatePagefilePrivilege	3244	Explorer.EXE
Token: SeShutdownPrivilege	3244	Explorer.EXE
Token: SeCreatePagefilePrivilege	3244	Explorer.EXE
Token: SeShutdownPrivilege	3244	Explorer.EXE
Token: SeCreatePagefilePrivilege	3244	Explorer.EXE
Token: SeShutdownPrivilege	3244	Explorer.EXE
Token: SeCreatePagefilePrivilege	3244	Explorer.EXE
Token: SeShutdownPrivilege	3244	Explorer.EXE
Token: SeCreatePagefilePrivilege	3244	Explorer.EXE
Token: SeShutdownPrivilege	3244	Explorer.EXE
Token: SeCreatePagefilePrivilege	3244	Explorer.EXE
Token: SeShutdownPrivilege	3244	Explorer.EXE
Token: SeCreatePagefilePrivilege	3244	Explorer.EXE
Token: SeShutdownPrivilege	3244	Explorer.EXE
Token: SeCreatePagefilePrivilege	3244	Explorer.EXE
Token: SeShutdownPrivilege	3244	Explorer.EXE
Token: SeCreatePagefilePrivilege	3244	Explorer.EXE
Token: SeShutdownPrivilege	3244	Explorer.EXE
Token: SeCreatePagefilePrivilege	3244	Explorer.EXE
Token: SeShutdownPrivilege	3244	Explorer.EXE
Token: SeCreatePagefilePrivilege	3244	Explorer.EXE
Token: SeShutdownPrivilege	3244	Explorer.EXE
Token: SeCreatePagefilePrivilege	3244	Explorer.EXE
Token: SeShutdownPrivilege	3244	Explorer.EXE
Token: SeCreatePagefilePrivilege	3244	Explorer.EXE
Token: SeShutdownPrivilege	3244	Explorer.EXE
Token: SeCreatePagefilePrivilege	3244	Explorer.EXE
Token: SeShutdownPrivilege	3244	Explorer.EXE
Token: SeCreatePagefilePrivilege	3244	Explorer.EXE

Suspicious use of WriteProcessMemory 39 IoCs

description	pid	Process	procid_target
PID 1804 wrote to memory of 2408	1804	noua comanda pdf.exe	83
PID 1804 wrote to memory of 2408	1804	noua comanda pdf.exe	83
PID 1804 wrote to memory of 2408	1804	noua comanda pdf.exe	83
PID 2408 wrote to memory of 4060	2408	cmd.exe	85
PID 2408 wrote to memory of 4060	2408	cmd.exe	85
PID 2408 wrote to memory of 4060	2408	cmd.exe	85
PID 1804 wrote to memory of 1540	1804	noua comanda pdf.exe	86
PID 1804 wrote to memory of 1540	1804	noua comanda pdf.exe	86
PID 1804 wrote to memory of 1540	1804	noua comanda pdf.exe	86
PID 1540 wrote to memory of 4740	1540	skype.exe	88
PID 1540 wrote to memory of 4740	1540	skype.exe	88
PID 1540 wrote to memory of 4740	1540	skype.exe	88
PID 4740 wrote to memory of 4684	4740	cmd.exe	90
PID 4740 wrote to memory of 4684	4740	cmd.exe	90
PID 4740 wrote to memory of 4684	4740	cmd.exe	90
PID 1540 wrote to memory of 4984	1540	skype.exe	91
PID 1540 wrote to memory of 4984	1540	skype.exe	91
PID 1540 wrote to memory of 4984	1540	skype.exe	91
PID 4984 wrote to memory of 4440	4984	cmd.exe	93
PID 4984 wrote to memory of 4440	4984	cmd.exe	93
PID 4984 wrote to memory of 4440	4984	cmd.exe	93
PID 2408 wrote to memory of 4340	2408	cmd.exe	95
PID 2408 wrote to memory of 4340	2408	cmd.exe	95
PID 2408 wrote to memory of 4340	2408	cmd.exe	95
PID 4740 wrote to memory of 4336	4740	cmd.exe	94
PID 4740 wrote to memory of 4336	4740	cmd.exe	94
PID 4740 wrote to memory of 4336	4740	cmd.exe	94
PID 4984 wrote to memory of 2148	4984	cmd.exe	96
PID 4984 wrote to memory of 2148	4984	cmd.exe	96
PID 4984 wrote to memory of 2148	4984	cmd.exe	96
PID 4984 wrote to memory of 1192	4984	cmd.exe	97
PID 4984 wrote to memory of 1192	4984	cmd.exe	97
PID 4984 wrote to memory of 1192	4984	cmd.exe	97
PID 1192 wrote to memory of 4848	1192	skype.exe	98
PID 1192 wrote to memory of 4848	1192	skype.exe	98
PID 1192 wrote to memory of 4848	1192	skype.exe	98
PID 1192 wrote to memory of 4848	1192	skype.exe	98
PID 1192 wrote to memory of 4848	1192	skype.exe	98
PID 1192 wrote to memory of 4848	1192	skype.exe	98

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
PID:3244
- C:\Users\Admin\AppData\Local\Temp\noua comanda pdf.exe
  "C:\Users\Admin\AppData\Local\Temp\noua comanda pdf.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: RenamesItself
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:1804
- - 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:2408
  - - 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:4060
  - - 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:4340
- - 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:1540
  - - 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:4740
    - - 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:4684
    - - 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:4336
  - - C:\Windows\SysWOW64\cmd.exe
      "cmd" /c ping 127.0.0.1 -n 14 > 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 14 > 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:4984
    - - C:\Windows\SysWOW64\PING.EXE
        
        ping 127.0.0.1 -n 14
        5⤵
        System Location Discovery: System Language Discovery
        System Network Configuration Discovery: Internet Connection Discovery
        Runs ping.exe
        
        PID:4440
    - - C:\Windows\SysWOW64\PING.EXE
        
        ping 127.0.0.1 -n 14
        5⤵
        System Location Discovery: System Language Discovery
        System Network Configuration Discovery: Internet Connection Discovery
        Runs ping.exe
        
        PID:2148
    - - 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:1192
      - 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:4848

Network

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

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

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
38f9ca5f5570b79d641379bc47045d9f

SHA1
0b3abd00af27221ba7484dbfada386a43999ceec

SHA256
9a4190a061a7378583003062d80fe7732edb00458b0064fbd8f3c46ceffbcd93

SHA512
a12e1179940b7b7fc0e005d9311d1c2c02a87698f0c51de3f37ed503b3c3c70c5f30f53473b9d21c35daa8bc8199b0461d760648d56bd8961436e92fea30389b

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/1192-25-0x0000000007460000-0x0000000007466000-memory.dmp

Filesize
24KB

Download
memory/1192-24-0x0000000007430000-0x000000000744A000-memory.dmp

Filesize
104KB

Download
memory/1192-23-0x0000000004EB0000-0x0000000005207000-memory.dmp

Filesize
3.3MB

Download
memory/1540-12-0x0000000074C50000-0x0000000075401000-memory.dmp

Filesize
7.7MB

Download
memory/1540-16-0x0000000074C50000-0x0000000075401000-memory.dmp

Filesize
7.7MB

Download
memory/1540-14-0x0000000074C50000-0x0000000075401000-memory.dmp

Filesize
7.7MB

Download
memory/1804-5-0x0000000005CE0000-0x0000000005D7C000-memory.dmp

Filesize
624KB

Download
memory/1804-0-0x0000000074C5E000-0x0000000074C5F000-memory.dmp

Filesize
4KB

Download
memory/1804-10-0x0000000007790000-0x0000000007CBC000-memory.dmp

Filesize
5.2MB

Download
memory/1804-13-0x0000000074C50000-0x0000000075401000-memory.dmp

Filesize
7.7MB

Download
memory/1804-8-0x0000000005690000-0x00000000056B6000-memory.dmp

Filesize
152KB

Download
memory/1804-7-0x0000000074C50000-0x0000000075401000-memory.dmp

Filesize
7.7MB

Download
memory/1804-6-0x00000000051C0000-0x00000000051E2000-memory.dmp

Filesize
136KB

Download
memory/1804-9-0x0000000006230000-0x000000000623A000-memory.dmp

Filesize
40KB

Download
memory/1804-4-0x00000000052C0000-0x0000000005617000-memory.dmp

Filesize
3.3MB

Download
memory/1804-3-0x0000000005220000-0x00000000052B2000-memory.dmp

Filesize
584KB

Download
memory/1804-2-0x0000000005730000-0x0000000005CD6000-memory.dmp

Filesize
5.6MB

Download
memory/1804-1-0x0000000000670000-0x000000000071A000-memory.dmp

Filesize
680KB

Download
memory/4848-26-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/4848-28-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download