formbook | c3b5e071b93bf026df68aa9c77b1009a8c4c009ce2c54512a0ece837af8dcfa0

Analysis

max time kernel
148s
max time network
18s
platform
windows7_x64
resource
win7-20241010-en
resource tags

arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-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-1-5-21-3692679935-4019334568-335155002-1000\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-1-5-21-3692679935-4019334568-335155002-1000\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
behavioral1/memory/2308-26-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral1/memory/2096-29-0x0000000000080000-0x00000000000AF000-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
1388	skype.exe

Loads dropped DLL 2 IoCs

pid	Process
2800	cmd.exe
2800	cmd.exe

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 1388 set thread context of 2308	1388	skype.exe	43
PID 2308 set thread context of 1268	2308	AddInProcess32.exe	20
PID 2096 set thread context of 1268	2096	raserver.exe	20

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	raserver.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	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	PING.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	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	reg.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
3032	PING.EXE
2944	PING.EXE
2664	PING.EXE
1668	cmd.exe
1216	PING.EXE
2880	cmd.exe
2800	cmd.exe

Runs ping.exe 1 TTPs 4 IoCs

Remote System Discovery

T1018

pid	Process
3032	PING.EXE
2944	PING.EXE
2664	PING.EXE
1216	PING.EXE

Suspicious behavior: EnumeratesProcesses 27 IoCs

pid	Process
2396	SWIFT 0037261762.exe
2396	SWIFT 0037261762.exe
2856	skype.exe
2856	skype.exe
2856	skype.exe
2856	skype.exe
1388	skype.exe
1388	skype.exe
1388	skype.exe
2308	AddInProcess32.exe
2308	AddInProcess32.exe
2096	raserver.exe
2096	raserver.exe
2096	raserver.exe
2096	raserver.exe
2096	raserver.exe
2096	raserver.exe
2096	raserver.exe
2096	raserver.exe
2096	raserver.exe
2096	raserver.exe
2096	raserver.exe
2096	raserver.exe
2096	raserver.exe
2096	raserver.exe
2096	raserver.exe
2096	raserver.exe

Suspicious behavior: MapViewOfSection 5 IoCs

pid	Process
2308	AddInProcess32.exe
2308	AddInProcess32.exe
2308	AddInProcess32.exe
2096	raserver.exe
2096	raserver.exe

Suspicious behavior: RenamesItself 1 IoCs

pid	Process
2396	SWIFT 0037261762.exe

Suspicious use of AdjustPrivilegeToken 5 IoCs

description	pid	Process
Token: SeDebugPrivilege	2396	SWIFT 0037261762.exe
Token: SeDebugPrivilege	2856	skype.exe
Token: SeDebugPrivilege	1388	skype.exe
Token: SeDebugPrivilege	2308	AddInProcess32.exe
Token: SeDebugPrivilege	2096	raserver.exe

Suspicious use of WriteProcessMemory 59 IoCs

description	pid	Process	procid_target
PID 2396 wrote to memory of 1668	2396	SWIFT 0037261762.exe	29
PID 2396 wrote to memory of 1668	2396	SWIFT 0037261762.exe	29
PID 2396 wrote to memory of 1668	2396	SWIFT 0037261762.exe	29
PID 2396 wrote to memory of 1668	2396	SWIFT 0037261762.exe	29
PID 1668 wrote to memory of 1216	1668	cmd.exe	31
PID 1668 wrote to memory of 1216	1668	cmd.exe	31
PID 1668 wrote to memory of 1216	1668	cmd.exe	31
PID 1668 wrote to memory of 1216	1668	cmd.exe	31
PID 2396 wrote to memory of 2856	2396	SWIFT 0037261762.exe	32
PID 2396 wrote to memory of 2856	2396	SWIFT 0037261762.exe	32
PID 2396 wrote to memory of 2856	2396	SWIFT 0037261762.exe	32
PID 2396 wrote to memory of 2856	2396	SWIFT 0037261762.exe	32
PID 2856 wrote to memory of 2880	2856	skype.exe	33
PID 2856 wrote to memory of 2880	2856	skype.exe	33
PID 2856 wrote to memory of 2880	2856	skype.exe	33
PID 2856 wrote to memory of 2880	2856	skype.exe	33
PID 2880 wrote to memory of 3032	2880	cmd.exe	35
PID 2880 wrote to memory of 3032	2880	cmd.exe	35
PID 2880 wrote to memory of 3032	2880	cmd.exe	35
PID 2880 wrote to memory of 3032	2880	cmd.exe	35
PID 2856 wrote to memory of 2800	2856	skype.exe	36
PID 2856 wrote to memory of 2800	2856	skype.exe	36
PID 2856 wrote to memory of 2800	2856	skype.exe	36
PID 2856 wrote to memory of 2800	2856	skype.exe	36
PID 2800 wrote to memory of 2944	2800	cmd.exe	38
PID 2800 wrote to memory of 2944	2800	cmd.exe	38
PID 2800 wrote to memory of 2944	2800	cmd.exe	38
PID 2800 wrote to memory of 2944	2800	cmd.exe	38
PID 2880 wrote to memory of 2840	2880	cmd.exe	40
PID 2880 wrote to memory of 2840	2880	cmd.exe	40
PID 2880 wrote to memory of 2840	2880	cmd.exe	40
PID 2880 wrote to memory of 2840	2880	cmd.exe	40
PID 1668 wrote to memory of 2832	1668	cmd.exe	39
PID 1668 wrote to memory of 2832	1668	cmd.exe	39
PID 1668 wrote to memory of 2832	1668	cmd.exe	39
PID 1668 wrote to memory of 2832	1668	cmd.exe	39
PID 2800 wrote to memory of 2664	2800	cmd.exe	41
PID 2800 wrote to memory of 2664	2800	cmd.exe	41
PID 2800 wrote to memory of 2664	2800	cmd.exe	41
PID 2800 wrote to memory of 2664	2800	cmd.exe	41
PID 2800 wrote to memory of 1388	2800	cmd.exe	42
PID 2800 wrote to memory of 1388	2800	cmd.exe	42
PID 2800 wrote to memory of 1388	2800	cmd.exe	42
PID 2800 wrote to memory of 1388	2800	cmd.exe	42
PID 1388 wrote to memory of 2308	1388	skype.exe	43
PID 1388 wrote to memory of 2308	1388	skype.exe	43
PID 1388 wrote to memory of 2308	1388	skype.exe	43
PID 1388 wrote to memory of 2308	1388	skype.exe	43
PID 1388 wrote to memory of 2308	1388	skype.exe	43
PID 1388 wrote to memory of 2308	1388	skype.exe	43
PID 1388 wrote to memory of 2308	1388	skype.exe	43
PID 1268 wrote to memory of 2096	1268	Explorer.EXE	44
PID 1268 wrote to memory of 2096	1268	Explorer.EXE	44
PID 1268 wrote to memory of 2096	1268	Explorer.EXE	44
PID 1268 wrote to memory of 2096	1268	Explorer.EXE	44
PID 2096 wrote to memory of 1676	2096	raserver.exe	45
PID 2096 wrote to memory of 1676	2096	raserver.exe	45
PID 2096 wrote to memory of 1676	2096	raserver.exe	45
PID 2096 wrote to memory of 1676	2096	raserver.exe	45

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of WriteProcessMemory
PID:1268
- C:\Users\Admin\AppData\Local\Temp\SWIFT 0037261762.exe
  "C:\Users\Admin\AppData\Local\Temp\SWIFT 0037261762.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: RenamesItself
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2396
- - 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,"
    3⤵
    - System Location Discovery: System Language Discovery
    - System Network Configuration Discovery: Internet Connection Discovery
    - Suspicious use of WriteProcessMemory
    PID:1668
  - - C:\Windows\SysWOW64\PING.EXE
      ping 127.0.0.1 -n 10
      4⤵
      System Location Discovery: System Language Discovery
      System Network Configuration Discovery: Internet Connection Discovery
      Runs ping.exe
      PID:1216
  - - 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:2832
- - 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:2856
  - - 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:2880
    - - 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:3032
    - - 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:2840
  - - C:\Windows\SysWOW64\cmd.exe
      "cmd" /c ping 127.0.0.1 -n 12 > 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 12 > nul && "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\skype\skype.exe"
      4⤵
      Drops startup file
      Loads dropped DLL
      System Location Discovery: System Language Discovery
      System Network Configuration Discovery: Internet Connection Discovery
      Suspicious use of WriteProcessMemory
      PID:2800
    - - C:\Windows\SysWOW64\PING.EXE
        
        ping 127.0.0.1 -n 12
        5⤵
        System Location Discovery: System Language Discovery
        System Network Configuration Discovery: Internet Connection Discovery
        Runs ping.exe
        
        PID:2944
    - - C:\Windows\SysWOW64\PING.EXE
        
        ping 127.0.0.1 -n 12
        5⤵
        System Location Discovery: System Language Discovery
        System Network Configuration Discovery: Internet Connection Discovery
        Runs ping.exe
        
        PID:2664
    - - 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:1388
      - 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:2308
- C:\Windows\SysWOW64\raserver.exe
  "C:\Windows\SysWOW64\raserver.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:2096
- - 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:1676

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

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

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Downloads

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/1388-20-0x0000000000970000-0x0000000000976000-memory.dmp

Filesize
24KB

Download
memory/1388-19-0x0000000000790000-0x00000000007AA000-memory.dmp

Filesize
104KB

Download
memory/1388-18-0x0000000000A80000-0x0000000000B20000-memory.dmp

Filesize
640KB

Download
memory/2096-29-0x0000000000080000-0x00000000000AF000-memory.dmp

Filesize
188KB

Download
memory/2096-28-0x0000000000690000-0x00000000006AC000-memory.dmp

Filesize
112KB

Download
memory/2308-22-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2308-23-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2308-25-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2308-26-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2396-6-0x0000000074470000-0x0000000074B5E000-memory.dmp

Filesize
6.9MB

Download
memory/2396-3-0x00000000002D0000-0x00000000002F6000-memory.dmp

Filesize
152KB

Download
memory/2396-0-0x000000007447E000-0x000000007447F000-memory.dmp

Filesize
4KB

Download
memory/2396-2-0x0000000074470000-0x0000000074B5E000-memory.dmp

Filesize
6.9MB

Download
memory/2396-1-0x00000000001B0000-0x0000000000250000-memory.dmp

Filesize
640KB

Download
memory/2856-7-0x0000000074470000-0x0000000074B5E000-memory.dmp

Filesize
6.9MB

Download
memory/2856-5-0x0000000074470000-0x0000000074B5E000-memory.dmp

Filesize
6.9MB

Download
memory/2856-4-0x0000000074470000-0x0000000074B5E000-memory.dmp

Filesize
6.9MB

Download