formbook | 419de44087b42e1b0a3dbd07b1f58c4d70559760c555c3b26f647ce70fcc40a4

Analysis

max time kernel
148s
max time network
149s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
21-12-2024 19:46

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General

Target

dufjl.exe
Size

6KB
MD5

74cbafe65a6f4de0cca11172f174b1fd
SHA1

515a076a1f3e5ea4290024e8d17a01df8b7569ce
SHA256

36c72fdce14ac0b58ca33cc96891c957e819aef91e0fb9ae0ada132105326df0
SHA512

0e7bb057721a2317fabfa520a6fac65be461c8ff5f6845a15b04b8914016ab1dcc4ecdc3f7a91c3ce1d4b59b88991e7cb4e03c31a9822f8ed0d4a20a20a1ea94
SSDEEP

96:LIhA9mR3hWEjndQAqAYYWEjtntrrwQbY5wSvqfxl:6RrjndQAq8jFRUQbH

Score

10^/10

formbook je14 discovery rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

Version

4.1

Campaign

je14

Decoy

innervisionbuildings.com

theenergysocialite.com

565548.com

panghr.com

onlyonesolutions.com

stjohnzone6.com

cnotes.rest

helfeb.online

xixi-s-inc.club

easilyentered.com

theshopx.store

mrclean-ac.com

miamibeachwateradventures.com

jpearce.co.uk

seseragi-bunkou.com

minimaddie.com

commbank-help-849c3.com

segohandelsonderneming.com

namthanhreal.com

fototerapi.online

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
behavioral4/memory/4896-1-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral4/memory/4896-4-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral4/memory/2756-9-0x00000000008D0000-0x00000000008FF000-memory.dmp	formbook

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 4688 set thread context of 4896	4688	dufjl.exe	83
PID 4896 set thread context of 3420	4896	dufjl.exe	56
PID 2756 set thread context of 3420	2756	cmstp.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	dufjl.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmstp.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Suspicious behavior: EnumeratesProcesses 62 IoCs

pid	Process
4896	dufjl.exe
4896	dufjl.exe
4896	dufjl.exe
4896	dufjl.exe
2756	cmstp.exe
2756	cmstp.exe
2756	cmstp.exe
2756	cmstp.exe
2756	cmstp.exe
2756	cmstp.exe
2756	cmstp.exe
2756	cmstp.exe
2756	cmstp.exe
2756	cmstp.exe
2756	cmstp.exe
2756	cmstp.exe
2756	cmstp.exe
2756	cmstp.exe
2756	cmstp.exe
2756	cmstp.exe
2756	cmstp.exe
2756	cmstp.exe
2756	cmstp.exe
2756	cmstp.exe
2756	cmstp.exe
2756	cmstp.exe
2756	cmstp.exe
2756	cmstp.exe
2756	cmstp.exe
2756	cmstp.exe
2756	cmstp.exe
2756	cmstp.exe
2756	cmstp.exe
2756	cmstp.exe
2756	cmstp.exe
2756	cmstp.exe
2756	cmstp.exe
2756	cmstp.exe
2756	cmstp.exe
2756	cmstp.exe
2756	cmstp.exe
2756	cmstp.exe
2756	cmstp.exe
2756	cmstp.exe
2756	cmstp.exe
2756	cmstp.exe
2756	cmstp.exe
2756	cmstp.exe
2756	cmstp.exe
2756	cmstp.exe
2756	cmstp.exe
2756	cmstp.exe
2756	cmstp.exe
2756	cmstp.exe
2756	cmstp.exe
2756	cmstp.exe
2756	cmstp.exe
2756	cmstp.exe
2756	cmstp.exe
2756	cmstp.exe
2756	cmstp.exe
2756	cmstp.exe

Suspicious behavior: MapViewOfSection 6 IoCs

pid	Process
4688	dufjl.exe
4896	dufjl.exe
4896	dufjl.exe
4896	dufjl.exe
2756	cmstp.exe
2756	cmstp.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	4896	dufjl.exe
Token: SeDebugPrivilege	2756	cmstp.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 4688 wrote to memory of 4896	4688	dufjl.exe	83
PID 4688 wrote to memory of 4896	4688	dufjl.exe	83
PID 4688 wrote to memory of 4896	4688	dufjl.exe	83
PID 4688 wrote to memory of 4896	4688	dufjl.exe	83
PID 3420 wrote to memory of 2756	3420	Explorer.EXE	84
PID 3420 wrote to memory of 2756	3420	Explorer.EXE	84
PID 3420 wrote to memory of 2756	3420	Explorer.EXE	84
PID 2756 wrote to memory of 1520	2756	cmstp.exe	86
PID 2756 wrote to memory of 1520	2756	cmstp.exe	86
PID 2756 wrote to memory of 1520	2756	cmstp.exe	86

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of WriteProcessMemory
PID:3420
- C:\Users\Admin\AppData\Local\Temp\dufjl.exe
  "C:\Users\Admin\AppData\Local\Temp\dufjl.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of WriteProcessMemory
  PID:4688
- - C:\Users\Admin\AppData\Local\Temp\dufjl.exe
    "C:\Users\Admin\AppData\Local\Temp\dufjl.exe"
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious behavior: MapViewOfSection
    - Suspicious use of AdjustPrivilegeToken
    PID:4896
- C:\Windows\SysWOW64\cmstp.exe
  "C:\Windows\SysWOW64\cmstp.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:2756
- - C:\Windows\SysWOW64\cmd.exe
    /c del "C:\Users\Admin\AppData\Local\Temp\dufjl.exe"
    3⤵
    - System Location Discovery: System Language Discovery
    PID:1520

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/2756-7-0x0000000000150000-0x0000000000166000-memory.dmp

Filesize
88KB

Download
memory/2756-9-0x00000000008D0000-0x00000000008FF000-memory.dmp

Filesize
188KB

Download
memory/2756-8-0x0000000000150000-0x0000000000166000-memory.dmp

Filesize
88KB

Download
memory/3420-10-0x0000000002D70000-0x0000000002E46000-memory.dmp

Filesize
856KB

Download
memory/3420-6-0x0000000002D70000-0x0000000002E46000-memory.dmp

Filesize
856KB

Download
memory/3420-14-0x0000000002E50000-0x0000000002EFA000-memory.dmp

Filesize
680KB

Download
memory/3420-15-0x0000000002E50000-0x0000000002EFA000-memory.dmp

Filesize
680KB

Download
memory/3420-17-0x0000000002E50000-0x0000000002EFA000-memory.dmp

Filesize
680KB

Download
memory/4688-0-0x0000000000FE0000-0x0000000000FE2000-memory.dmp

Filesize
8KB

Download
memory/4896-4-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/4896-5-0x0000000000B40000-0x0000000000B54000-memory.dmp

Filesize
80KB

Download
memory/4896-2-0x00000000010C0000-0x000000000140A000-memory.dmp

Filesize
3.3MB

Download
memory/4896-1-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download