formbook | be332dbd8e08a4dd3e74b79814ef5a9d3d141a9f16809b78c0775b1b75255727

Analysis

max time kernel
148s
max time network
143s
platform
windows10-2004_x64
resource
win10v2004-20250314-en
resource tags

arch:x64arch:x86image:win10v2004-20250314-enlocale:en-usos:windows10-2004-x64system
submitted
26/03/2025, 02:12

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General

Target

Attendance Salary- March 2025_pdf.exe
Size

1.0MB
MD5

e740d48a80acb9e1dc9d6db2a5168cdd
SHA1

347bae9058c0d16d1708c53e692ffcc114d2fa9f
SHA256

3b5e784be046225a8aa044b751ab7ddc4ec59eb00104f2e9a8b0f47ce039ec2b
SHA512

f86bec3d723ab614ff1db85d92d50420b4b3f6f23297b95e9c42a416691321fc18ea0e6bbbc56fc45cc63b03e8c60b0428a2edaf9b87fdeeda9960a47fb0cfb7
SSDEEP

24576:1u6J33O0c+JY5UZ+XC0kGso6FajFZwAfu/41v1IWY:Xu0c++OCvkGs9FajFZpfu/4TY

Score

10^/10

formbook sa38 discovery rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

Version

4.1

Campaign

sa38

Decoy

nguinal-hernia-933151178.click

oodfate.pics

aurafood.shop

esolved.lol

iuif.xyz

opguess.xyz

ocesempremelhor.fun

co2020.net

lotek.club

oshy.tech

heck-buy1101.shop

ooltoken.xyz

ountrywordlick.lifestyle

edical-services-90443.bond

cats.computer

ast-news.net

oroscope-prediction2.today

eb3coin.club

estaccom.net

ali8886.net

Signatures

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

Formbook payload 3 IoCs

rat

resource	yara_rule
behavioral2/memory/740-11-0x0000000000640000-0x000000000066F000-memory.dmp	formbook
behavioral2/memory/740-15-0x0000000000640000-0x000000000066F000-memory.dmp	formbook
behavioral2/memory/2832-21-0x00000000005D0000-0x00000000005FF000-memory.dmp	formbook

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 2488 set thread context of 740	2488	Attendance Salary- March 2025_pdf.exe	89
PID 740 set thread context of 3504	740	svchost.exe	56
PID 2832 set thread context of 3504	2832	svchost.exe	56

Program crash 1 IoCs

pid	pid_target	Process	procid_target
3820	2488	WerFault.exe	85

System Location Discovery: System Language Discovery 1 TTPs 3 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	Attendance Salary- March 2025_pdf.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Modifies registry class 2 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-3975168204-1612096350-4002976354-1000_Classes\CLSID\{018D5C66-4533-4307-9B53-224DE2ED1FE6}\Instance\	Explorer.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{4336a54d-038b-4685-ab02-99bb52d3fb8b}\Instance\	Explorer.EXE

Suspicious behavior: EnumeratesProcesses 62 IoCs

pid	Process
740	svchost.exe
740	svchost.exe
740	svchost.exe
740	svchost.exe
2832	svchost.exe
2832	svchost.exe
2832	svchost.exe
2832	svchost.exe
2832	svchost.exe
2832	svchost.exe
2832	svchost.exe
2832	svchost.exe
2832	svchost.exe
2832	svchost.exe
2832	svchost.exe
2832	svchost.exe
2832	svchost.exe
2832	svchost.exe
2832	svchost.exe
2832	svchost.exe
2832	svchost.exe
2832	svchost.exe
2832	svchost.exe
2832	svchost.exe
2832	svchost.exe
2832	svchost.exe
2832	svchost.exe
2832	svchost.exe
2832	svchost.exe
2832	svchost.exe
2832	svchost.exe
2832	svchost.exe
2832	svchost.exe
2832	svchost.exe
2832	svchost.exe
2832	svchost.exe
2832	svchost.exe
2832	svchost.exe
2832	svchost.exe
2832	svchost.exe
2832	svchost.exe
2832	svchost.exe
2832	svchost.exe
2832	svchost.exe
2832	svchost.exe
2832	svchost.exe
2832	svchost.exe
2832	svchost.exe
2832	svchost.exe
2832	svchost.exe
2832	svchost.exe
2832	svchost.exe
2832	svchost.exe
2832	svchost.exe
2832	svchost.exe
2832	svchost.exe
2832	svchost.exe
2832	svchost.exe
2832	svchost.exe
2832	svchost.exe
2832	svchost.exe
2832	svchost.exe

Suspicious behavior: MapViewOfSection 7 IoCs

pid	Process
2488	Attendance Salary- March 2025_pdf.exe
2488	Attendance Salary- March 2025_pdf.exe
740	svchost.exe
740	svchost.exe
740	svchost.exe
2832	svchost.exe
2832	svchost.exe

Suspicious use of AdjustPrivilegeToken 10 IoCs

description	pid	Process
Token: SeDebugPrivilege	740	svchost.exe
Token: SeShutdownPrivilege	3504	Explorer.EXE
Token: SeCreatePagefilePrivilege	3504	Explorer.EXE
Token: SeShutdownPrivilege	3504	Explorer.EXE
Token: SeCreatePagefilePrivilege	3504	Explorer.EXE
Token: SeDebugPrivilege	2832	svchost.exe
Token: SeShutdownPrivilege	3504	Explorer.EXE
Token: SeCreatePagefilePrivilege	3504	Explorer.EXE
Token: SeShutdownPrivilege	3504	Explorer.EXE
Token: SeCreatePagefilePrivilege	3504	Explorer.EXE

Suspicious use of FindShellTrayWindow 2 IoCs

pid	Process
2488	Attendance Salary- March 2025_pdf.exe
2488	Attendance Salary- March 2025_pdf.exe

Suspicious use of SendNotifyMessage 2 IoCs

pid	Process
2488	Attendance Salary- March 2025_pdf.exe
2488	Attendance Salary- March 2025_pdf.exe

Suspicious use of UnmapMainImage 1 IoCs

pid	Process
3504	Explorer.EXE

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 2488 wrote to memory of 740	2488	Attendance Salary- March 2025_pdf.exe	89
PID 2488 wrote to memory of 740	2488	Attendance Salary- March 2025_pdf.exe	89
PID 2488 wrote to memory of 740	2488	Attendance Salary- March 2025_pdf.exe	89
PID 2488 wrote to memory of 740	2488	Attendance Salary- March 2025_pdf.exe	89
PID 3504 wrote to memory of 2832	3504	Explorer.EXE	93
PID 3504 wrote to memory of 2832	3504	Explorer.EXE	93
PID 3504 wrote to memory of 2832	3504	Explorer.EXE	93
PID 2832 wrote to memory of 5452	2832	svchost.exe	98
PID 2832 wrote to memory of 5452	2832	svchost.exe	98
PID 2832 wrote to memory of 5452	2832	svchost.exe	98

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Modifies registry class
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:3504
- C:\Users\Admin\AppData\Local\Temp\Attendance Salary- March 2025_pdf.exe
  "C:\Users\Admin\AppData\Local\Temp\Attendance Salary- March 2025_pdf.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of FindShellTrayWindow
  - Suspicious use of SendNotifyMessage
  - Suspicious use of WriteProcessMemory
  PID:2488
- - C:\Windows\SysWOW64\svchost.exe
    "C:\Users\Admin\AppData\Local\Temp\Attendance Salary- March 2025_pdf.exe"
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious behavior: MapViewOfSection
    - Suspicious use of AdjustPrivilegeToken
    PID:740
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 2488 -s 680
    3⤵
    - Program crash
    PID:3820
- C:\Windows\SysWOW64\svchost.exe
  "C:\Windows\SysWOW64\svchost.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:2832
- - C:\Windows\SysWOW64\cmd.exe
    /c del "C:\Windows\SysWOW64\svchost.exe"
    3⤵
    - System Location Discovery: System Language Discovery
    PID:5452

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 2488 -ip 2488
1⤵
PID:5236

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/740-11-0x0000000000640000-0x000000000066F000-memory.dmp

Filesize
188KB

Download
memory/740-14-0x0000000001000000-0x000000000134A000-memory.dmp

Filesize
3.3MB

Download
memory/740-16-0x0000000001560000-0x0000000001574000-memory.dmp

Filesize
80KB

Download
memory/740-15-0x0000000000640000-0x000000000066F000-memory.dmp

Filesize
188KB

Download
memory/2488-10-0x0000000000AE0000-0x0000000000AE4000-memory.dmp

Filesize
16KB

Download
memory/2832-18-0x00000000002A0000-0x00000000002AE000-memory.dmp

Filesize
56KB

Download
memory/2832-20-0x00000000002A0000-0x00000000002AE000-memory.dmp

Filesize
56KB

Download
memory/2832-21-0x00000000005D0000-0x00000000005FF000-memory.dmp

Filesize
188KB

Download
memory/3504-17-0x00000000089E0000-0x0000000008B80000-memory.dmp

Filesize
1.6MB

Download
memory/3504-25-0x00000000030A0000-0x00000000031BA000-memory.dmp

Filesize
1.1MB

Download
memory/3504-26-0x00000000030A0000-0x00000000031BA000-memory.dmp

Filesize
1.1MB

Download
memory/3504-28-0x00000000030A0000-0x00000000031BA000-memory.dmp

Filesize
1.1MB

Download