formbook | 18d42895a0a37161199e0f3da093cb3057f71a608866a3d3284c83a7b90dbf81

Analysis

max time kernel
149s
max time network
152s
platform
windows10-2004_x64
resource
win10v2004-20240709-en
resource tags

arch:x64arch:x86image:win10v2004-20240709-enlocale:en-usos:windows10-2004-x64system
submitted
28/07/2024, 17:35

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General

Target

$TEMP/Conservatory.dll
Size

43KB
MD5

255c2887e6b5f9756a9a473952e0807a
SHA1

b13718feb8e932e6a59d76a9984fa043d6f7826b
SHA256

0a5e2d346b9e7296275bf79fbda56cfc21a8af540b836dba04df1b6270bfe2c3
SHA512

e45ee410d61639ea098c9d8f831126d62cb67144834e6da6bab5c929cc8fe7a92493ef8a0c83c73b19942540318598987214c6b3377d6959425a91d269527823
SSDEEP

768:GTLZ/ZYB0KBLqpnn9rhwmmnTEDi4hvyPTsU9MBacUlT:GTt/ZQ0EM99MJbdMUcUlT

Score

10^/10

formbook c233 discovery rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

Version

4.1

Campaign

c233

Decoy

concentratedprerolls.com

17aia.com

the-mistershop.com

pro-ecare.com

hushkeeper.com

zhmeiju.com

locationdd.com

rupanaa.com

smartlivegt.com

oidhlima.com

climpuright.icu

shopmaincollection.com

divineconsciousnessacademy.com

lumenhealthandwellness.com

relicstudios.net

gamelosophers.com

minimalismoweb.com

ecoapiaryfarms.com

siyuechuanmei.com

advincicode.com

Signatures

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

Formbook payload 3 IoCs

rat

resource	yara_rule
behavioral32/memory/4700-5-0x0000000000400000-0x000000000042E000-memory.dmp	formbook
behavioral32/memory/4700-7-0x0000000000400000-0x000000000042E000-memory.dmp	formbook
behavioral32/memory/4700-9-0x0000000000400000-0x000000000042E000-memory.dmp	formbook

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 4700 set thread context of 3508	4700	cmd.exe	56
PID 4700 set thread context of 3508	4700	cmd.exe	56
PID 4956 set thread context of 3508	4956	raserver.exe	56

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	rundll32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	raserver.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Suspicious behavior: EnumeratesProcesses 53 IoCs

pid	Process
556	rundll32.exe
4700	cmd.exe
4700	cmd.exe
4700	cmd.exe
4700	cmd.exe
4700	cmd.exe
4700	cmd.exe
4956	raserver.exe
4956	raserver.exe
4956	raserver.exe
4956	raserver.exe
4956	raserver.exe
4956	raserver.exe
4956	raserver.exe
4956	raserver.exe
4956	raserver.exe
4956	raserver.exe
4956	raserver.exe
4956	raserver.exe
4956	raserver.exe
4956	raserver.exe
4956	raserver.exe
4956	raserver.exe
4956	raserver.exe
4956	raserver.exe
4956	raserver.exe
4956	raserver.exe
4956	raserver.exe
4956	raserver.exe
4956	raserver.exe
4956	raserver.exe
4956	raserver.exe
4956	raserver.exe
4956	raserver.exe
4956	raserver.exe
4956	raserver.exe
4956	raserver.exe
4956	raserver.exe
4956	raserver.exe
4956	raserver.exe
4956	raserver.exe
4956	raserver.exe
4956	raserver.exe
4956	raserver.exe
4956	raserver.exe
4956	raserver.exe
4956	raserver.exe
4956	raserver.exe
4956	raserver.exe
4956	raserver.exe
4956	raserver.exe
4956	raserver.exe
4956	raserver.exe

Suspicious behavior: MapViewOfSection 7 IoCs

pid	Process
556	rundll32.exe
4700	cmd.exe
4700	cmd.exe
4700	cmd.exe
4700	cmd.exe
4956	raserver.exe
4956	raserver.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	4700	cmd.exe
Token: SeDebugPrivilege	4956	raserver.exe

Suspicious use of UnmapMainImage 1 IoCs

pid	Process
3508	Explorer.EXE

Suspicious use of WriteProcessMemory 64 IoCs

description	pid	Process	procid_target
PID 1212 wrote to memory of 556	1212	rundll32.exe	84
PID 1212 wrote to memory of 556	1212	rundll32.exe	84
PID 1212 wrote to memory of 556	1212	rundll32.exe	84
PID 556 wrote to memory of 4700	556	rundll32.exe	86
PID 556 wrote to memory of 4700	556	rundll32.exe	86
PID 556 wrote to memory of 4700	556	rundll32.exe	86
PID 556 wrote to memory of 4700	556	rundll32.exe	86
PID 556 wrote to memory of 4700	556	rundll32.exe	86
PID 556 wrote to memory of 4700	556	rundll32.exe	86
PID 556 wrote to memory of 4700	556	rundll32.exe	86
PID 556 wrote to memory of 4700	556	rundll32.exe	86
PID 556 wrote to memory of 4700	556	rundll32.exe	86
PID 556 wrote to memory of 4700	556	rundll32.exe	86
PID 556 wrote to memory of 4700	556	rundll32.exe	86
PID 556 wrote to memory of 4700	556	rundll32.exe	86
PID 556 wrote to memory of 4700	556	rundll32.exe	86
PID 556 wrote to memory of 4700	556	rundll32.exe	86
PID 556 wrote to memory of 4700	556	rundll32.exe	86
PID 556 wrote to memory of 4700	556	rundll32.exe	86
PID 556 wrote to memory of 4700	556	rundll32.exe	86
PID 556 wrote to memory of 4700	556	rundll32.exe	86
PID 556 wrote to memory of 4700	556	rundll32.exe	86
PID 556 wrote to memory of 4700	556	rundll32.exe	86
PID 556 wrote to memory of 4700	556	rundll32.exe	86
PID 556 wrote to memory of 4700	556	rundll32.exe	86
PID 556 wrote to memory of 4700	556	rundll32.exe	86
PID 556 wrote to memory of 4700	556	rundll32.exe	86
PID 556 wrote to memory of 4700	556	rundll32.exe	86
PID 556 wrote to memory of 4700	556	rundll32.exe	86
PID 556 wrote to memory of 4700	556	rundll32.exe	86
PID 556 wrote to memory of 4700	556	rundll32.exe	86
PID 556 wrote to memory of 4700	556	rundll32.exe	86
PID 556 wrote to memory of 4700	556	rundll32.exe	86
PID 556 wrote to memory of 4700	556	rundll32.exe	86
PID 556 wrote to memory of 4700	556	rundll32.exe	86
PID 556 wrote to memory of 4700	556	rundll32.exe	86
PID 556 wrote to memory of 4700	556	rundll32.exe	86
PID 556 wrote to memory of 4700	556	rundll32.exe	86
PID 556 wrote to memory of 4700	556	rundll32.exe	86
PID 556 wrote to memory of 4700	556	rundll32.exe	86
PID 556 wrote to memory of 4700	556	rundll32.exe	86
PID 556 wrote to memory of 4700	556	rundll32.exe	86
PID 556 wrote to memory of 4700	556	rundll32.exe	86
PID 556 wrote to memory of 4700	556	rundll32.exe	86
PID 556 wrote to memory of 4700	556	rundll32.exe	86
PID 556 wrote to memory of 4700	556	rundll32.exe	86
PID 556 wrote to memory of 4700	556	rundll32.exe	86
PID 556 wrote to memory of 4700	556	rundll32.exe	86
PID 556 wrote to memory of 4700	556	rundll32.exe	86
PID 556 wrote to memory of 4700	556	rundll32.exe	86
PID 556 wrote to memory of 4700	556	rundll32.exe	86
PID 556 wrote to memory of 4700	556	rundll32.exe	86
PID 556 wrote to memory of 4700	556	rundll32.exe	86
PID 556 wrote to memory of 4700	556	rundll32.exe	86
PID 556 wrote to memory of 4700	556	rundll32.exe	86
PID 556 wrote to memory of 4700	556	rundll32.exe	86
PID 556 wrote to memory of 4700	556	rundll32.exe	86
PID 556 wrote to memory of 4700	556	rundll32.exe	86
PID 556 wrote to memory of 4700	556	rundll32.exe	86
PID 556 wrote to memory of 4700	556	rundll32.exe	86
PID 556 wrote to memory of 4700	556	rundll32.exe	86
PID 556 wrote to memory of 4700	556	rundll32.exe	86
PID 556 wrote to memory of 4700	556	rundll32.exe	86
PID 556 wrote to memory of 4700	556	rundll32.exe	86

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of UnmapMainImage
PID:3508
- C:\Windows\system32\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\$TEMP\Conservatory.dll,#1
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1212
- - C:\Windows\SysWOW64\rundll32.exe
    rundll32.exe C:\Users\Admin\AppData\Local\Temp\$TEMP\Conservatory.dll,#1
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious behavior: MapViewOfSection
    - Suspicious use of WriteProcessMemory
    PID:556
  - - C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\system32\cmd.exe"
      4⤵
      Suspicious use of SetThreadContext
      Suspicious behavior: EnumeratesProcesses
      Suspicious behavior: MapViewOfSection
      Suspicious use of AdjustPrivilegeToken
      PID:4700
- 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
  PID:4956
- - C:\Windows\SysWOW64\cmd.exe
    /c del "C:\Windows\SysWOW64\cmd.exe"
    3⤵
    - System Location Discovery: System Language Discovery
    PID:4120

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

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Downloads

memory/556-0-0x00000000026D0000-0x00000000026D3000-memory.dmp

Filesize
12KB

Download
memory/556-1-0x0000000075360000-0x0000000075428000-memory.dmp

Filesize
800KB

Download
memory/556-2-0x0000000075DE0000-0x0000000075E43000-memory.dmp

Filesize
396KB

Download
memory/556-4-0x0000000075360000-0x0000000075428000-memory.dmp

Filesize
800KB

Download
memory/3508-12-0x0000000003340000-0x00000000033F9000-memory.dmp

Filesize
740KB

Download
memory/4700-3-0x00000000007D0000-0x00000000007D6000-memory.dmp

Filesize
24KB

Download
memory/4700-5-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download
memory/4700-7-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download
memory/4700-9-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download
memory/4956-8-0x0000000000980000-0x000000000099F000-memory.dmp

Filesize
124KB

Download
memory/4956-10-0x0000000000980000-0x000000000099F000-memory.dmp

Filesize
124KB

Download