formbook | 2d1d21fefaccdde89b759234f18ed79ea0a8a631c15be4f93fe3106f7fe6abe6

Analysis

max time kernel
148s
max time network
137s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
28-10-2024 13:55

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General

Target

Document.exe
Size

1.0MB
MD5

8128f92e759ef0399a73d001b78bf37e
SHA1

64d435e7ca1c98ea6e1b5818d6cc8d0dad22db7d
SHA256

2d1d21fefaccdde89b759234f18ed79ea0a8a631c15be4f93fe3106f7fe6abe6
SHA512

5de12e936fc0be70ed771cb911e3cacec64a1ddd6e84124bd59b9a56117fd5eae655c79442cc33f971fe686ec8826484c196f04c5c6b85fb6864ac7b24faee30
SSDEEP

24576:ffmMv6Ckr7Mny5QL2OTYtNaqimUy7RRtst35de:f3v+7/5QL2mTARReR5de

Score

10^/10

formbook n04s discovery rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

Version

4.1

Campaign

n04s

Decoy

imberstimedtinter.cfd

ttfr44solutionschesapeake.pro

kkas.xyz

sk-frby.xyz

ptowing.net

jzimq-community.xyz

ressoncrookencruller.cfd

amedana.click

ravamarketing.tech

udfa-speech.xyz

ose-bdbzsg.xyz

alsiuuarsiau.xyz

fgiopa.xyz

15501.pro

tart-ewlon.xyz

kjjf-company.xyz

araldschauer.shop

wet25.vip

armostfavorgaivn.cfd

ompa77.click

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/4712-3-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral2/memory/4712-6-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral2/memory/1488-12-0x00000000010C0000-0x00000000010EF000-memory.dmp	formbook

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 3716 set thread context of 4712	3716	Document.exe	87
PID 4712 set thread context of 3488	4712	svchost.exe	56
PID 1488 set thread context of 3488	1488	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

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Document.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 3 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{1f3427c8-5c10-4210-aa03-2ee45287d668}\Instance\	Explorer.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{4336a54d-038b-4685-ab02-99bb52d3fb8b}\Instance\	Explorer.EXE
Key created	\REGISTRY\USER\S-1-5-21-4089630652-1596403869-279772308-1000_Classes\CLSID\{018D5C66-4533-4307-9B53-224DE2ED1FE6}\Instance\	Explorer.EXE

Suspicious behavior: EnumeratesProcesses 62 IoCs

pid	Process
4712	svchost.exe
4712	svchost.exe
4712	svchost.exe
4712	svchost.exe
1488	mstsc.exe
1488	mstsc.exe
1488	mstsc.exe
1488	mstsc.exe
1488	mstsc.exe
1488	mstsc.exe
1488	mstsc.exe
1488	mstsc.exe
1488	mstsc.exe
1488	mstsc.exe
1488	mstsc.exe
1488	mstsc.exe
1488	mstsc.exe
1488	mstsc.exe
1488	mstsc.exe
1488	mstsc.exe
1488	mstsc.exe
1488	mstsc.exe
1488	mstsc.exe
1488	mstsc.exe
1488	mstsc.exe
1488	mstsc.exe
1488	mstsc.exe
1488	mstsc.exe
1488	mstsc.exe
1488	mstsc.exe
1488	mstsc.exe
1488	mstsc.exe
1488	mstsc.exe
1488	mstsc.exe
1488	mstsc.exe
1488	mstsc.exe
1488	mstsc.exe
1488	mstsc.exe
1488	mstsc.exe
1488	mstsc.exe
1488	mstsc.exe
1488	mstsc.exe
1488	mstsc.exe
1488	mstsc.exe
1488	mstsc.exe
1488	mstsc.exe
1488	mstsc.exe
1488	mstsc.exe
1488	mstsc.exe
1488	mstsc.exe
1488	mstsc.exe
1488	mstsc.exe
1488	mstsc.exe
1488	mstsc.exe
1488	mstsc.exe
1488	mstsc.exe
1488	mstsc.exe
1488	mstsc.exe
1488	mstsc.exe
1488	mstsc.exe
1488	mstsc.exe
1488	mstsc.exe

Suspicious behavior: MapViewOfSection 6 IoCs

pid	Process
3716	Document.exe
4712	svchost.exe
4712	svchost.exe
4712	svchost.exe
1488	mstsc.exe
1488	mstsc.exe

Suspicious use of AdjustPrivilegeToken 18 IoCs

description	pid	Process
Token: SeDebugPrivilege	4712	svchost.exe
Token: SeShutdownPrivilege	3488	Explorer.EXE
Token: SeCreatePagefilePrivilege	3488	Explorer.EXE
Token: SeShutdownPrivilege	3488	Explorer.EXE
Token: SeCreatePagefilePrivilege	3488	Explorer.EXE
Token: SeShutdownPrivilege	3488	Explorer.EXE
Token: SeCreatePagefilePrivilege	3488	Explorer.EXE
Token: SeShutdownPrivilege	3488	Explorer.EXE
Token: SeCreatePagefilePrivilege	3488	Explorer.EXE
Token: SeDebugPrivilege	1488	mstsc.exe
Token: SeShutdownPrivilege	3488	Explorer.EXE
Token: SeCreatePagefilePrivilege	3488	Explorer.EXE
Token: SeShutdownPrivilege	3488	Explorer.EXE
Token: SeCreatePagefilePrivilege	3488	Explorer.EXE
Token: SeShutdownPrivilege	3488	Explorer.EXE
Token: SeCreatePagefilePrivilege	3488	Explorer.EXE
Token: SeShutdownPrivilege	3488	Explorer.EXE
Token: SeCreatePagefilePrivilege	3488	Explorer.EXE

Suspicious use of FindShellTrayWindow 4 IoCs

pid	Process
3716	Document.exe
3716	Document.exe
3488	Explorer.EXE
3488	Explorer.EXE

Suspicious use of SendNotifyMessage 2 IoCs

pid	Process
3716	Document.exe
3716	Document.exe

Suspicious use of UnmapMainImage 1 IoCs

pid	Process
3488	Explorer.EXE

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 3716 wrote to memory of 4712	3716	Document.exe	87
PID 3716 wrote to memory of 4712	3716	Document.exe	87
PID 3716 wrote to memory of 4712	3716	Document.exe	87
PID 3716 wrote to memory of 4712	3716	Document.exe	87
PID 3488 wrote to memory of 1488	3488	Explorer.EXE	88
PID 3488 wrote to memory of 1488	3488	Explorer.EXE	88
PID 3488 wrote to memory of 1488	3488	Explorer.EXE	88
PID 1488 wrote to memory of 2572	1488	mstsc.exe	94
PID 1488 wrote to memory of 2572	1488	mstsc.exe	94
PID 1488 wrote to memory of 2572	1488	mstsc.exe	94

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:3488
- C:\Users\Admin\AppData\Local\Temp\Document.exe
  "C:\Users\Admin\AppData\Local\Temp\Document.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:3716
- - C:\Windows\SysWOW64\svchost.exe
    "C:\Users\Admin\AppData\Local\Temp\Document.exe"
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious behavior: MapViewOfSection
    - Suspicious use of AdjustPrivilegeToken
    PID:4712
- 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:1488
- - C:\Windows\SysWOW64\cmd.exe
    /c del "C:\Windows\SysWOW64\svchost.exe"
    3⤵
    - System Location Discovery: System Language Discovery
    PID:2572

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/1488-9-0x00000000005C0000-0x00000000006FA000-memory.dmp

Filesize
1.2MB

Download
memory/1488-12-0x00000000010C0000-0x00000000010EF000-memory.dmp

Filesize
188KB

Download
memory/1488-11-0x00000000005C0000-0x00000000006FA000-memory.dmp

Filesize
1.2MB

Download
memory/3488-13-0x0000000008F10000-0x00000000090A0000-memory.dmp

Filesize
1.6MB

Download
memory/3488-8-0x0000000008F10000-0x00000000090A0000-memory.dmp

Filesize
1.6MB

Download
memory/3488-17-0x0000000009470000-0x0000000009570000-memory.dmp

Filesize
1024KB

Download
memory/3488-18-0x0000000009470000-0x0000000009570000-memory.dmp

Filesize
1024KB

Download
memory/3488-20-0x0000000009470000-0x0000000009570000-memory.dmp

Filesize
1024KB

Download
memory/3716-2-0x0000000004040000-0x0000000004240000-memory.dmp

Filesize
2.0MB

Download
memory/4712-7-0x0000000000FC0000-0x0000000000FD5000-memory.dmp

Filesize
84KB

Download
memory/4712-6-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/4712-4-0x0000000001800000-0x0000000001B4A000-memory.dmp

Filesize
3.3MB

Download
memory/4712-3-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download