formbook | 885b8f641e85513c6b1144673619ff7aa00138b27c7d5431a265f4fc5b615b5c

Analysis

max time kernel
146s
max time network
20s
platform
windows7_x64
resource
win7-20241010-en
resource tags

arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system
submitted
03-02-2025 11:57

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General

Target

Payroll Overpayment_pdf.exe
Size

693KB
MD5

dc0cf0105719f618a1bc3559f392346c
SHA1

d3ce0d937f4014e94be5b4ed2f6aacfe36feb634
SHA256

68f9c7b5496c4d7699179f8c6f7a79626a03da699cd1986036f03af725218c45
SHA512

ce3b00a37c1450e87e819121c5370d324e631dcdbdfc01b0c4e4c76f340caa8e0bb1306a4f18a79b63955a3641f8f0ddcff61fda4be8fbab10b8a1d9a9dc8ded
SSDEEP

12288:JWzlWswecl9+1C/CiSxZcoTBPs/GZP6xvh0pbFOgLLYEAl4bhwSItprbkjkR:IweL1HicZfhs/J0XLLJiAWTrbd

Score

10^/10

formbook g43m discovery execution rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

Version

4.1

Campaign

g43m

Decoy

8328.shop

kronoseletronicos.online

pasanghoki3.homes

comitatogroscavallo.info

online-advertising-96729.bond

cpt1025.top

news-xzurufo.xyz

zycr.shop

loanplan.xyz

osipovs.digital

pgflow.cloud

alooytv17.shop

swirlstakedtawkee.cloud

sipoja.shop

senior-living-17169.bond

junepages.online

heavydutyweld.shop

smarminds.xyz

alistika.info

staplerl.shop

Signatures

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

Formbook payload 2 IoCs

rat

resource	yara_rule
behavioral1/memory/2536-24-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral1/memory/2304-28-0x0000000000080000-0x00000000000AF000-memory.dmp	formbook

Command and Scripting Interpreter: PowerShell 1 TTPs 2 IoCs

Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

execution

PowerShell

T1059.001

pid	Process
2836	powershell.exe
2936	powershell.exe

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 1356 set thread context of 2536	1356	Payroll Overpayment_pdf.exe	35
PID 2536 set thread context of 1360	2536	RegSvcs.exe	20
PID 2304 set thread context of 1360	2304	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 6 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	schtasks.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	Payroll Overpayment_pdf.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	powershell.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	powershell.exe

Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence execution

Scheduled Task

T1053.005

pid	Process
2740	schtasks.exe

Suspicious behavior: EnumeratesProcesses 32 IoCs

pid	Process
1356	Payroll Overpayment_pdf.exe
1356	Payroll Overpayment_pdf.exe
1356	Payroll Overpayment_pdf.exe
1356	Payroll Overpayment_pdf.exe
2536	RegSvcs.exe
2536	RegSvcs.exe
2936	powershell.exe
2836	powershell.exe
2304	raserver.exe
2304	raserver.exe
2304	raserver.exe
2304	raserver.exe
2304	raserver.exe
2304	raserver.exe
2304	raserver.exe
2304	raserver.exe
2304	raserver.exe
2304	raserver.exe
2304	raserver.exe
2304	raserver.exe
2304	raserver.exe
2304	raserver.exe
2304	raserver.exe
2304	raserver.exe
2304	raserver.exe
2304	raserver.exe
2304	raserver.exe
2304	raserver.exe
2304	raserver.exe
2304	raserver.exe
2304	raserver.exe
2304	raserver.exe

Suspicious behavior: MapViewOfSection 5 IoCs

pid	Process
2536	RegSvcs.exe
2536	RegSvcs.exe
2536	RegSvcs.exe
2304	raserver.exe
2304	raserver.exe

Suspicious use of AdjustPrivilegeToken 5 IoCs

description	pid	Process
Token: SeDebugPrivilege	1356	Payroll Overpayment_pdf.exe
Token: SeDebugPrivilege	2536	RegSvcs.exe
Token: SeDebugPrivilege	2836	powershell.exe
Token: SeDebugPrivilege	2936	powershell.exe
Token: SeDebugPrivilege	2304	raserver.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 1356 wrote to memory of 2836	1356	Payroll Overpayment_pdf.exe	29
PID 1356 wrote to memory of 2836	1356	Payroll Overpayment_pdf.exe	29
PID 1356 wrote to memory of 2836	1356	Payroll Overpayment_pdf.exe	29
PID 1356 wrote to memory of 2836	1356	Payroll Overpayment_pdf.exe	29
PID 1356 wrote to memory of 2936	1356	Payroll Overpayment_pdf.exe	31
PID 1356 wrote to memory of 2936	1356	Payroll Overpayment_pdf.exe	31
PID 1356 wrote to memory of 2936	1356	Payroll Overpayment_pdf.exe	31
PID 1356 wrote to memory of 2936	1356	Payroll Overpayment_pdf.exe	31
PID 1356 wrote to memory of 2740	1356	Payroll Overpayment_pdf.exe	32
PID 1356 wrote to memory of 2740	1356	Payroll Overpayment_pdf.exe	32
PID 1356 wrote to memory of 2740	1356	Payroll Overpayment_pdf.exe	32
PID 1356 wrote to memory of 2740	1356	Payroll Overpayment_pdf.exe	32
PID 1356 wrote to memory of 2536	1356	Payroll Overpayment_pdf.exe	35
PID 1356 wrote to memory of 2536	1356	Payroll Overpayment_pdf.exe	35
PID 1356 wrote to memory of 2536	1356	Payroll Overpayment_pdf.exe	35
PID 1356 wrote to memory of 2536	1356	Payroll Overpayment_pdf.exe	35
PID 1356 wrote to memory of 2536	1356	Payroll Overpayment_pdf.exe	35
PID 1356 wrote to memory of 2536	1356	Payroll Overpayment_pdf.exe	35
PID 1356 wrote to memory of 2536	1356	Payroll Overpayment_pdf.exe	35
PID 1356 wrote to memory of 2536	1356	Payroll Overpayment_pdf.exe	35
PID 1356 wrote to memory of 2536	1356	Payroll Overpayment_pdf.exe	35
PID 1356 wrote to memory of 2536	1356	Payroll Overpayment_pdf.exe	35
PID 1360 wrote to memory of 2304	1360	Explorer.EXE	36
PID 1360 wrote to memory of 2304	1360	Explorer.EXE	36
PID 1360 wrote to memory of 2304	1360	Explorer.EXE	36
PID 1360 wrote to memory of 2304	1360	Explorer.EXE	36
PID 2304 wrote to memory of 2112	2304	raserver.exe	37
PID 2304 wrote to memory of 2112	2304	raserver.exe	37
PID 2304 wrote to memory of 2112	2304	raserver.exe	37
PID 2304 wrote to memory of 2112	2304	raserver.exe	37

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of WriteProcessMemory
PID:1360
- C:\Users\Admin\AppData\Local\Temp\Payroll Overpayment_pdf.exe
  "C:\Users\Admin\AppData\Local\Temp\Payroll Overpayment_pdf.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:1356
- - C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Local\Temp\Payroll Overpayment_pdf.exe"
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:2836
- - C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\UyjTUL.exe"
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:2936
- - C:\Windows\SysWOW64\schtasks.exe
    "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\UyjTUL" /XML "C:\Users\Admin\AppData\Local\Temp\tmp8AC2.tmp"
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:2740
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
    "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe"
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious behavior: MapViewOfSection
    - Suspicious use of AdjustPrivilegeToken
    PID:2536
- 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:2304
- - C:\Windows\SysWOW64\cmd.exe
    /c del "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe"
    3⤵
    - System Location Discovery: System Language Discovery
    PID:2112

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

PowerShell

T1059.001

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Persistence

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Privilege Escalation

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmp8AC2.tmp

Filesize
1KB

MD5
4971d751bdb591faff9adc63b6193c9f

SHA1
72497465407c7fac326d28075a7cc655ad623c3d

SHA256
6d0b3e563f4c0f8910bdd17cecb53cac7b37499b5055609c215f4280b8a849f9

SHA512
a411e42aa4ae915079c09d751284d46d61f058eb233d11daff85be1f3d38f6b45b701c70997c26dcd5fbf81c77e3c0e62b7c84be511ddf8a90536f6a14fb29a4

Download Submit
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\7NEACZFJ5MT8JX20ZPBH.temp

Filesize
7KB

MD5
b28be38e82d336277c3fb5acc28cfbef

SHA1
1a2fb6b8c0030f0388c3e8e084af75ce5867fb41

SHA256
470a36ffd45b5320c0dd6c8a2c3105d5fa2f08cabd8cf28b9eb2c21f0f36fee6

SHA512
6876aece23d8221e25fd5ff32048ba59de9d0637f8f5aa644a2c8a485c58459ce5849bd04af1916e9024c1a68537f5e00042baf6f68249a2fc39b9fb31bfe8bc

Download Submit
memory/1356-4-0x00000000744AE000-0x00000000744AF000-memory.dmp

Filesize
4KB

Download
memory/1356-25-0x00000000744A0000-0x0000000074B8E000-memory.dmp

Filesize
6.9MB

Download
memory/1356-0-0x00000000744AE000-0x00000000744AF000-memory.dmp

Filesize
4KB

Download
memory/1356-5-0x00000000744A0000-0x0000000074B8E000-memory.dmp

Filesize
6.9MB

Download
memory/1356-6-0x00000000001B0000-0x0000000000228000-memory.dmp

Filesize
480KB

Download
memory/1356-2-0x00000000744A0000-0x0000000074B8E000-memory.dmp

Filesize
6.9MB

Download
memory/1356-1-0x0000000000990000-0x0000000000A40000-memory.dmp

Filesize
704KB

Download
memory/1356-3-0x0000000000420000-0x000000000043E000-memory.dmp

Filesize
120KB

Download
memory/2304-28-0x0000000000080000-0x00000000000AF000-memory.dmp

Filesize
188KB

Download
memory/2304-27-0x0000000000A90000-0x0000000000AAC000-memory.dmp

Filesize
112KB

Download
memory/2536-19-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2536-21-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2536-23-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2536-24-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download