formbook | 1a635d43f1ea2b5506eaf73b1783847d16f51646054cd8bb92bcf82eb3b4aae9

Analysis

max time kernel
148s
max time network
136s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
09-11-2024 02:16

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General

Target

1a635d43f1ea2b5506eaf73b1783847d16f51646054cd8bb92bcf82eb3b4aae9.exe
Size

1.0MB
MD5

a705beae89687fe840600d21503ccabe
SHA1

1b3395647588b26f15a180701be18c4c4fcd444c
SHA256

1a635d43f1ea2b5506eaf73b1783847d16f51646054cd8bb92bcf82eb3b4aae9
SHA512

26d9be72899732a252b85683efe58036e4629dfb01c9e73a65a9b89deb75ccb26d4ce124fbb4a30d2ff0df790678d0c1182e33e33c0a56117e386292a1fed247
SSDEEP

24576:DRmJkcoQricOIQxiZY1iaKrNoupU7RjFmFqrNJ:wJZoQrbTFZY1iaKm9QcpJ

Score

10^/10

formbook cs64 discovery rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

Version

4.1

Campaign

cs64

Decoy

dc02.top

ogelsumopisang.space

hecrazycowrestaurant.online

roneclipse.shop

ijtjs.top

ius.top

stekhare.app

vway.online

ats.social

lavlyxe.info

raphic-design-degree-35680.bond

avrd.shop

egastudyacademy.net

3home.store

afe-naver0m.pro

ortartechnologies.site

23tictactoe.com

card.monster

etafzco.net

outpetit.shop

Signatures

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

Formbook payload 4 IoCs

rat

Processes:

resource	yara_rule
behavioral2/memory/1776-3-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral2/memory/1776-6-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral2/memory/1776-10-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral2/memory/640-16-0x0000000000320000-0x000000000034F000-memory.dmp	formbook

Suspicious use of SetThreadContext 4 IoCs

Processes:

1a635d43f1ea2b5506eaf73b1783847d16f51646054cd8bb92bcf82eb3b4aae9.exesvchost.exemstsc.exe

description	pid	Process	procid_target
PID 3672 set thread context of 1776	3672	1a635d43f1ea2b5506eaf73b1783847d16f51646054cd8bb92bcf82eb3b4aae9.exe	86
PID 1776 set thread context of 3520	1776	svchost.exe	56
PID 1776 set thread context of 3520	1776	svchost.exe	56
PID 640 set thread context of 3520	640	mstsc.exe	56

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 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

Processes:

1a635d43f1ea2b5506eaf73b1783847d16f51646054cd8bb92bcf82eb3b4aae9.exemstsc.execmd.exe

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	1a635d43f1ea2b5506eaf73b1783847d16f51646054cd8bb92bcf82eb3b4aae9.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	mstsc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Modifies registry class 1 IoCs

Processes:

Explorer.EXE

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{1f3427c8-5c10-4210-aa03-2ee45287d668}\Instance\	Explorer.EXE

Suspicious behavior: EnumeratesProcesses 62 IoCs

Processes:

svchost.exemstsc.exe

pid	Process
1776	svchost.exe
1776	svchost.exe
1776	svchost.exe
1776	svchost.exe
1776	svchost.exe
1776	svchost.exe
640	mstsc.exe
640	mstsc.exe
640	mstsc.exe
640	mstsc.exe
640	mstsc.exe
640	mstsc.exe
640	mstsc.exe
640	mstsc.exe
640	mstsc.exe
640	mstsc.exe
640	mstsc.exe
640	mstsc.exe
640	mstsc.exe
640	mstsc.exe
640	mstsc.exe
640	mstsc.exe
640	mstsc.exe
640	mstsc.exe
640	mstsc.exe
640	mstsc.exe
640	mstsc.exe
640	mstsc.exe
640	mstsc.exe
640	mstsc.exe
640	mstsc.exe
640	mstsc.exe
640	mstsc.exe
640	mstsc.exe
640	mstsc.exe
640	mstsc.exe
640	mstsc.exe
640	mstsc.exe
640	mstsc.exe
640	mstsc.exe
640	mstsc.exe
640	mstsc.exe
640	mstsc.exe
640	mstsc.exe
640	mstsc.exe
640	mstsc.exe
640	mstsc.exe
640	mstsc.exe
640	mstsc.exe
640	mstsc.exe
640	mstsc.exe
640	mstsc.exe
640	mstsc.exe
640	mstsc.exe
640	mstsc.exe
640	mstsc.exe
640	mstsc.exe
640	mstsc.exe
640	mstsc.exe
640	mstsc.exe
640	mstsc.exe
640	mstsc.exe

Suspicious behavior: MapViewOfSection 7 IoCs

Processes:

1a635d43f1ea2b5506eaf73b1783847d16f51646054cd8bb92bcf82eb3b4aae9.exesvchost.exemstsc.exe

pid	Process
3672	1a635d43f1ea2b5506eaf73b1783847d16f51646054cd8bb92bcf82eb3b4aae9.exe
1776	svchost.exe
1776	svchost.exe
1776	svchost.exe
1776	svchost.exe
640	mstsc.exe
640	mstsc.exe

Suspicious use of AdjustPrivilegeToken 10 IoCs

Processes:

svchost.exeExplorer.EXEmstsc.exe

description	pid	Process
Token: SeDebugPrivilege	1776	svchost.exe
Token: SeShutdownPrivilege	3520	Explorer.EXE
Token: SeCreatePagefilePrivilege	3520	Explorer.EXE
Token: SeShutdownPrivilege	3520	Explorer.EXE
Token: SeCreatePagefilePrivilege	3520	Explorer.EXE
Token: SeShutdownPrivilege	3520	Explorer.EXE
Token: SeCreatePagefilePrivilege	3520	Explorer.EXE
Token: SeShutdownPrivilege	3520	Explorer.EXE
Token: SeCreatePagefilePrivilege	3520	Explorer.EXE
Token: SeDebugPrivilege	640	mstsc.exe

Suspicious use of FindShellTrayWindow 2 IoCs

Processes:

Explorer.EXE

pid	Process
3520	Explorer.EXE
3520	Explorer.EXE

Suspicious use of UnmapMainImage 1 IoCs

Processes:

Explorer.EXE

pid	Process
3520	Explorer.EXE

Suspicious use of WriteProcessMemory 10 IoCs

Processes:

1a635d43f1ea2b5506eaf73b1783847d16f51646054cd8bb92bcf82eb3b4aae9.exeExplorer.EXEmstsc.exe

description	pid	Process	procid_target
PID 3672 wrote to memory of 1776	3672	1a635d43f1ea2b5506eaf73b1783847d16f51646054cd8bb92bcf82eb3b4aae9.exe	86
PID 3672 wrote to memory of 1776	3672	1a635d43f1ea2b5506eaf73b1783847d16f51646054cd8bb92bcf82eb3b4aae9.exe	86
PID 3672 wrote to memory of 1776	3672	1a635d43f1ea2b5506eaf73b1783847d16f51646054cd8bb92bcf82eb3b4aae9.exe	86
PID 3672 wrote to memory of 1776	3672	1a635d43f1ea2b5506eaf73b1783847d16f51646054cd8bb92bcf82eb3b4aae9.exe	86
PID 3520 wrote to memory of 640	3520	Explorer.EXE	96
PID 3520 wrote to memory of 640	3520	Explorer.EXE	96
PID 3520 wrote to memory of 640	3520	Explorer.EXE	96
PID 640 wrote to memory of 2172	640	mstsc.exe	101
PID 640 wrote to memory of 2172	640	mstsc.exe	101
PID 640 wrote to memory of 2172	640	mstsc.exe	101

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Modifies registry class
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:3520
- C:\Users\Admin\AppData\Local\Temp\1a635d43f1ea2b5506eaf73b1783847d16f51646054cd8bb92bcf82eb3b4aae9.exe
  "C:\Users\Admin\AppData\Local\Temp\1a635d43f1ea2b5506eaf73b1783847d16f51646054cd8bb92bcf82eb3b4aae9.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of WriteProcessMemory
  PID:3672
- - C:\Windows\SysWOW64\svchost.exe
    "C:\Users\Admin\AppData\Local\Temp\1a635d43f1ea2b5506eaf73b1783847d16f51646054cd8bb92bcf82eb3b4aae9.exe"
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious behavior: MapViewOfSection
    - Suspicious use of AdjustPrivilegeToken
    PID:1776
- C:\Windows\SysWOW64\mstsc.exe
  "C:\Windows\SysWOW64\mstsc.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:640
- - C:\Windows\SysWOW64\cmd.exe
    /c del "C:\Windows\SysWOW64\svchost.exe"
    3⤵
    - System Location Discovery: System Language Discovery
    PID:2172

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

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

memory/640-13-0x0000000000950000-0x0000000000A8A000-memory.dmp

Filesize
1.2MB

Download
memory/640-16-0x0000000000320000-0x000000000034F000-memory.dmp

Filesize
188KB

Download
memory/640-15-0x0000000000950000-0x0000000000A8A000-memory.dmp

Filesize
1.2MB

Download
memory/1776-3-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/1776-4-0x0000000001A00000-0x0000000001D4A000-memory.dmp

Filesize
3.3MB

Download
memory/1776-7-0x0000000001780000-0x0000000001795000-memory.dmp

Filesize
84KB

Download
memory/1776-6-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/1776-10-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/1776-11-0x0000000003800000-0x0000000003815000-memory.dmp

Filesize
84KB

Download
memory/3520-12-0x0000000008D20000-0x0000000008E6E000-memory.dmp

Filesize
1.3MB

Download
memory/3520-8-0x0000000002910000-0x00000000029C3000-memory.dmp

Filesize
716KB

Download
memory/3520-17-0x0000000008D20000-0x0000000008E6E000-memory.dmp

Filesize
1.3MB

Download
memory/3520-20-0x000000000A230000-0x000000000A375000-memory.dmp

Filesize
1.3MB

Download
memory/3520-21-0x000000000A230000-0x000000000A375000-memory.dmp

Filesize
1.3MB

Download
memory/3520-23-0x000000000A230000-0x000000000A375000-memory.dmp

Filesize
1.3MB

Download
memory/3672-2-0x0000000004090000-0x0000000004290000-memory.dmp

Filesize
2.0MB

Download