formbook | c3b5e071b93bf026df68aa9c77b1009a8c4c009ce2c54512a0ece837af8dcfa0

Analysis

max time kernel
145s
max time network
141s
platform
windows10-2004_x64
resource
win10v2004-20250314-en
resource tags

arch:x64arch:x86image:win10v2004-20250314-enlocale:en-usos:windows10-2004-x64system
submitted
27/03/2025, 05:58

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General

Target

SWIFT 0037261762.exe
Size

616KB
MD5

33597eea937de9fc85c91fc86d4081da
SHA1

221c42c79cb047ade2346e1da635a1ac359f06ef
SHA256

ea4fe51e13f6ab1785535b32345f69ef110e21981bf7dbb09ce02c0bdec1e43c
SHA512

7dab2e8b3b8852cbe61e6f17c6adc67b1c2662e3f1a4178644d6dd6479be6c549442fd1598123c1f08c13417d647a7dd6d9f530eeff31026d6cecfea04d965f9
SSDEEP

12288:73jM8fLuh/ABkePJNbT3y1UkuEtnrCuk3aMVa:L7faAimNbjkxtnrCzVa

Score

10^/10

formbook 3nop discovery persistence rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

Version

4.1

Campaign

3nop

Decoy

subur88wap.sbs

tyai1.top

skillbeast.site

kcclassiccars.net

lghomes.net

eijanno.cyou

work-in-usa-60100.bond

268chill.store

bharatwin.biz

cakjitu01.xyz

misafert.xyz

hiretemp.net

lvekz-onearmed.top

amanda-manopo.info

seo-companies22.online

casinowalletth.net

maynrson.monster

bewizi.com

thedronetechhub.shop

car-insurance-93947.bond

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-1-5-21-805952410-2104024357-1716932545-1000\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-1-5-21-805952410-2104024357-1716932545-1000\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
behavioral2/memory/3516-24-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral2/memory/3516-26-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral2/memory/4188-29-0x00000000009C0000-0x00000000009EF000-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-1-5-21-805952410-2104024357-1716932545-1000\Control Panel\International\Geo\Nation	SWIFT 0037261762.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
2008	skype.exe

Suspicious use of SetThreadContext 4 IoCs

description	pid	Process	procid_target
PID 2008 set thread context of 3516	2008	skype.exe	111
PID 3516 set thread context of 3416	3516	AddInProcess32.exe	56
PID 3516 set thread context of 3416	3516	AddInProcess32.exe	56
PID 4188 set thread context of 3416	4188	explorer.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	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	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	skype.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	explorer.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	SWIFT 0037261762.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.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
4296	PING.EXE
3896	PING.EXE
4464	cmd.exe
3140	PING.EXE
4356	cmd.exe
3220	PING.EXE
4320	cmd.exe

Runs ping.exe 1 TTPs 4 IoCs

Remote System Discovery

T1018

pid	Process
3140	PING.EXE
3220	PING.EXE
4296	PING.EXE
3896	PING.EXE

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
3456	SWIFT 0037261762.exe
3456	SWIFT 0037261762.exe
4744	skype.exe
4744	skype.exe
4744	skype.exe
4744	skype.exe
4744	skype.exe
4744	skype.exe
4744	skype.exe
4744	skype.exe
4744	skype.exe
4744	skype.exe
4744	skype.exe
4744	skype.exe
4744	skype.exe
4744	skype.exe
4744	skype.exe
4744	skype.exe
4744	skype.exe
4744	skype.exe
4744	skype.exe
4744	skype.exe
4744	skype.exe
4744	skype.exe
4744	skype.exe
4744	skype.exe
4744	skype.exe
4744	skype.exe
4744	skype.exe
2008	skype.exe
2008	skype.exe
2008	skype.exe
2008	skype.exe
2008	skype.exe
3516	AddInProcess32.exe
3516	AddInProcess32.exe
3516	AddInProcess32.exe
3516	AddInProcess32.exe
3516	AddInProcess32.exe
3516	AddInProcess32.exe
4188	explorer.exe
4188	explorer.exe
4188	explorer.exe
4188	explorer.exe
4188	explorer.exe
4188	explorer.exe
4188	explorer.exe
4188	explorer.exe
4188	explorer.exe
4188	explorer.exe
4188	explorer.exe
4188	explorer.exe
4188	explorer.exe
4188	explorer.exe
4188	explorer.exe
4188	explorer.exe
4188	explorer.exe
4188	explorer.exe
4188	explorer.exe
4188	explorer.exe
4188	explorer.exe
4188	explorer.exe
4188	explorer.exe
4188	explorer.exe

Suspicious behavior: MapViewOfSection 6 IoCs

pid	Process
3516	AddInProcess32.exe
3516	AddInProcess32.exe
3516	AddInProcess32.exe
3516	AddInProcess32.exe
4188	explorer.exe
4188	explorer.exe

Suspicious behavior: RenamesItself 1 IoCs

pid	Process
3456	SWIFT 0037261762.exe

Suspicious use of AdjustPrivilegeToken 5 IoCs

description	pid	Process
Token: SeDebugPrivilege	3456	SWIFT 0037261762.exe
Token: SeDebugPrivilege	4744	skype.exe
Token: SeDebugPrivilege	2008	skype.exe
Token: SeDebugPrivilege	3516	AddInProcess32.exe
Token: SeDebugPrivilege	4188	explorer.exe

Suspicious use of UnmapMainImage 1 IoCs

pid	Process
3416	Explorer.EXE

Suspicious use of WriteProcessMemory 51 IoCs

description	pid	Process	procid_target
PID 3456 wrote to memory of 4464	3456	SWIFT 0037261762.exe	89
PID 3456 wrote to memory of 4464	3456	SWIFT 0037261762.exe	89
PID 3456 wrote to memory of 4464	3456	SWIFT 0037261762.exe	89
PID 4464 wrote to memory of 3140	4464	cmd.exe	91
PID 4464 wrote to memory of 3140	4464	cmd.exe	91
PID 4464 wrote to memory of 3140	4464	cmd.exe	91
PID 3456 wrote to memory of 4744	3456	SWIFT 0037261762.exe	92
PID 3456 wrote to memory of 4744	3456	SWIFT 0037261762.exe	92
PID 3456 wrote to memory of 4744	3456	SWIFT 0037261762.exe	92
PID 4744 wrote to memory of 4356	4744	skype.exe	95
PID 4744 wrote to memory of 4356	4744	skype.exe	95
PID 4744 wrote to memory of 4356	4744	skype.exe	95
PID 4356 wrote to memory of 3220	4356	cmd.exe	97
PID 4356 wrote to memory of 3220	4356	cmd.exe	97
PID 4356 wrote to memory of 3220	4356	cmd.exe	97
PID 4744 wrote to memory of 4320	4744	skype.exe	100
PID 4744 wrote to memory of 4320	4744	skype.exe	100
PID 4744 wrote to memory of 4320	4744	skype.exe	100
PID 4320 wrote to memory of 4296	4320	cmd.exe	102
PID 4320 wrote to memory of 4296	4320	cmd.exe	102
PID 4320 wrote to memory of 4296	4320	cmd.exe	102
PID 4464 wrote to memory of 396	4464	cmd.exe	104
PID 4464 wrote to memory of 396	4464	cmd.exe	104
PID 4464 wrote to memory of 396	4464	cmd.exe	104
PID 4320 wrote to memory of 3896	4320	cmd.exe	106
PID 4320 wrote to memory of 3896	4320	cmd.exe	106
PID 4320 wrote to memory of 3896	4320	cmd.exe	106
PID 4356 wrote to memory of 4048	4356	cmd.exe	107
PID 4356 wrote to memory of 4048	4356	cmd.exe	107
PID 4356 wrote to memory of 4048	4356	cmd.exe	107
PID 4320 wrote to memory of 2008	4320	cmd.exe	109
PID 4320 wrote to memory of 2008	4320	cmd.exe	109
PID 4320 wrote to memory of 2008	4320	cmd.exe	109
PID 2008 wrote to memory of 4828	2008	skype.exe	110
PID 2008 wrote to memory of 4828	2008	skype.exe	110
PID 2008 wrote to memory of 4828	2008	skype.exe	110
PID 2008 wrote to memory of 4828	2008	skype.exe	110
PID 2008 wrote to memory of 4828	2008	skype.exe	110
PID 2008 wrote to memory of 4828	2008	skype.exe	110
PID 2008 wrote to memory of 3516	2008	skype.exe	111
PID 2008 wrote to memory of 3516	2008	skype.exe	111
PID 2008 wrote to memory of 3516	2008	skype.exe	111
PID 2008 wrote to memory of 3516	2008	skype.exe	111
PID 2008 wrote to memory of 3516	2008	skype.exe	111
PID 2008 wrote to memory of 3516	2008	skype.exe	111
PID 3416 wrote to memory of 4188	3416	Explorer.EXE	122
PID 3416 wrote to memory of 4188	3416	Explorer.EXE	122
PID 3416 wrote to memory of 4188	3416	Explorer.EXE	122
PID 4188 wrote to memory of 1680	4188	explorer.exe	123
PID 4188 wrote to memory of 1680	4188	explorer.exe	123
PID 4188 wrote to memory of 1680	4188	explorer.exe	123

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:3416
- C:\Users\Admin\AppData\Local\Temp\SWIFT 0037261762.exe
  "C:\Users\Admin\AppData\Local\Temp\SWIFT 0037261762.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:3456
- - C:\Windows\SysWOW64\cmd.exe
    "cmd" /c ping 127.0.0.1 -n 7 > 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:4464
  - - C:\Windows\SysWOW64\PING.EXE
      ping 127.0.0.1 -n 7
      4⤵
      System Location Discovery: System Language Discovery
      System Network Configuration Discovery: Internet Connection Discovery
      Runs ping.exe
      PID:3140
  - - 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:396
- - 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:4744
  - - C:\Windows\SysWOW64\cmd.exe
      "cmd" /c ping 127.0.0.1 -n 10 > 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:4356
    - - C:\Windows\SysWOW64\PING.EXE
        
        ping 127.0.0.1 -n 10
        5⤵
        System Location Discovery: System Language Discovery
        System Network Configuration Discovery: Internet Connection Discovery
        Runs ping.exe
        
        PID:3220
    - - 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:4048
  - - C:\Windows\SysWOW64\cmd.exe
      "cmd" /c ping 127.0.0.1 -n 9 > 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 9 > 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:4320
    - - C:\Windows\SysWOW64\PING.EXE
        
        ping 127.0.0.1 -n 9
        5⤵
        System Location Discovery: System Language Discovery
        System Network Configuration Discovery: Internet Connection Discovery
        Runs ping.exe
        
        PID:4296
    - - C:\Windows\SysWOW64\PING.EXE
        
        ping 127.0.0.1 -n 9
        5⤵
        System Location Discovery: System Language Discovery
        System Network Configuration Discovery: Internet Connection Discovery
        Runs ping.exe
        
        PID:3896
    - - 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:2008
      - C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe
        
        "C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe"
        6⤵
        
        PID:4828
      - 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:3516
- C:\Windows\SysWOW64\explorer.exe
  "C:\Windows\SysWOW64\explorer.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:4188
- - 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:1680

Network

MITRE ATT&CK Enterprise v15

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

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
bfd425f352e735df3262cf2f7ecef0c0

SHA1
ec1143a8e10e9f9a868fbd401165cda5b1d4cf58

SHA256
c01dce3be794873cd4c0b4597e5c071baa4e5b88e15c61dcadeeb9f6a9821ab5

SHA512
744911b6d8e79664b9ef490524da292b33958254df0ed78637295abe478e418c530dec91199eb71f9190b32f6f66fc2c61a1b56a9ad802f1b5020270e78da07c

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

Filesize
616KB

MD5
33597eea937de9fc85c91fc86d4081da

SHA1
221c42c79cb047ade2346e1da635a1ac359f06ef

SHA256
ea4fe51e13f6ab1785535b32345f69ef110e21981bf7dbb09ce02c0bdec1e43c

SHA512
7dab2e8b3b8852cbe61e6f17c6adc67b1c2662e3f1a4178644d6dd6479be6c549442fd1598123c1f08c13417d647a7dd6d9f530eeff31026d6cecfea04d965f9

Download Submit
memory/2008-22-0x0000000007A10000-0x0000000007A2A000-memory.dmp

Filesize
104KB

Download
memory/2008-23-0x0000000008D30000-0x0000000008D36000-memory.dmp

Filesize
24KB

Download
memory/3416-31-0x0000000008B80000-0x0000000008CA8000-memory.dmp

Filesize
1.2MB

Download
memory/3456-3-0x0000000074ED0000-0x0000000075680000-memory.dmp

Filesize
7.7MB

Download
memory/3456-6-0x0000000005140000-0x00000000051D2000-memory.dmp

Filesize
584KB

Download
memory/3456-7-0x0000000004EA0000-0x0000000004EAA000-memory.dmp

Filesize
40KB

Download
memory/3456-8-0x0000000006CB0000-0x00000000071DC000-memory.dmp

Filesize
5.2MB

Download
memory/3456-5-0x00000000055F0000-0x0000000005B94000-memory.dmp

Filesize
5.6MB

Download
memory/3456-11-0x0000000074ED0000-0x0000000075680000-memory.dmp

Filesize
7.7MB

Download
memory/3456-0-0x0000000074EDE000-0x0000000074EDF000-memory.dmp

Filesize
4KB

Download
memory/3456-4-0x0000000004B70000-0x0000000004B96000-memory.dmp

Filesize
152KB

Download
memory/3456-2-0x0000000004CA0000-0x0000000004D3C000-memory.dmp

Filesize
624KB

Download
memory/3456-1-0x0000000000200000-0x00000000002A0000-memory.dmp

Filesize
640KB

Download
memory/3516-24-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/3516-26-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/4188-27-0x0000000000480000-0x00000000008B3000-memory.dmp

Filesize
4.2MB

Download
memory/4188-28-0x0000000000480000-0x00000000008B3000-memory.dmp

Filesize
4.2MB

Download
memory/4188-29-0x00000000009C0000-0x00000000009EF000-memory.dmp

Filesize
188KB

Download
memory/4744-15-0x0000000074ED0000-0x0000000075680000-memory.dmp

Filesize
7.7MB

Download
memory/4744-13-0x0000000074ED0000-0x0000000075680000-memory.dmp

Filesize
7.7MB

Download
memory/4744-12-0x0000000074ED0000-0x0000000075680000-memory.dmp

Filesize
7.7MB

Download
memory/4744-10-0x0000000074ED0000-0x0000000075680000-memory.dmp

Filesize
7.7MB

Download