formbook | 08522edec76d7f0b00ae43564ccd77729cb5e07f0e8111f76f3cdf5496fe35f8

Analysis

max time kernel
147s
max time network
148s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
26-12-2024 22:48

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General

Target

formbook.exe
Size

181KB
MD5

93918c623317234901e5846540f3a43d
SHA1

a5b49aea492de5430b09fa6c1e07a43a28c92b9d
SHA256

8b23c3ddd235c8708c47bf3eec883a6f8ec12656680648400cb4733d9a14e762
SHA512

c85af20af3aaabc9dd0e7da5b6dabb923d02c29360b8edd9ce31199311b9723f59a5ba13cf344f5891f4a691f6759954de11c12c5005cc80a9eb87567c274153
SSDEEP

3072:TDhzK7wjZWfpsOjxl47KVrK6IUxg2ELN/pP8tGzb4JHg:fhEwYNxy7erK6IUhCt2kzb4JH

Score

10^/10

formbook ga4 discovery rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

Version

4.1

Campaign

ga4

Decoy

rivercitygoldens.com

seattlebarkery.com

jxsxdb.com

bet365o1.com

mynexthomedfw.com

scheduleyourintentions.com

vestingfacts.com

angelicasanchezpsicologa.com

constructorariedel.com

myabron.com

askthepotato.com

cuscases.com

dlrioata.com

ilikecircles.com

teamsters401kupsplan.com

79dzb.com

simoneventpros.com

cloversonglyrics.com

intansuper.com

gamefacesydney.com

Signatures

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

Formbook payload 1 IoCs

rat

resource	yara_rule
behavioral2/memory/412-2-0x0000000000FA0000-0x0000000000FCE000-memory.dmp	formbook

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 412 set thread context of 3448	412	formbook.exe	56
PID 4416 set thread context of 3448	4416	mstsc.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	formbook.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	mstsc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Suspicious behavior: EnumeratesProcesses 62 IoCs

pid	Process
412	formbook.exe
412	formbook.exe
412	formbook.exe
412	formbook.exe
4416	mstsc.exe
4416	mstsc.exe
4416	mstsc.exe
4416	mstsc.exe
4416	mstsc.exe
4416	mstsc.exe
4416	mstsc.exe
4416	mstsc.exe
4416	mstsc.exe
4416	mstsc.exe
4416	mstsc.exe
4416	mstsc.exe
4416	mstsc.exe
4416	mstsc.exe
4416	mstsc.exe
4416	mstsc.exe
4416	mstsc.exe
4416	mstsc.exe
4416	mstsc.exe
4416	mstsc.exe
4416	mstsc.exe
4416	mstsc.exe
4416	mstsc.exe
4416	mstsc.exe
4416	mstsc.exe
4416	mstsc.exe
4416	mstsc.exe
4416	mstsc.exe
4416	mstsc.exe
4416	mstsc.exe
4416	mstsc.exe
4416	mstsc.exe
4416	mstsc.exe
4416	mstsc.exe
4416	mstsc.exe
4416	mstsc.exe
4416	mstsc.exe
4416	mstsc.exe
4416	mstsc.exe
4416	mstsc.exe
4416	mstsc.exe
4416	mstsc.exe
4416	mstsc.exe
4416	mstsc.exe
4416	mstsc.exe
4416	mstsc.exe
4416	mstsc.exe
4416	mstsc.exe
4416	mstsc.exe
4416	mstsc.exe
4416	mstsc.exe
4416	mstsc.exe
4416	mstsc.exe
4416	mstsc.exe
4416	mstsc.exe
4416	mstsc.exe
4416	mstsc.exe
4416	mstsc.exe

Suspicious behavior: MapViewOfSection 5 IoCs

pid	Process
412	formbook.exe
412	formbook.exe
412	formbook.exe
4416	mstsc.exe
4416	mstsc.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	412	formbook.exe
Token: SeDebugPrivilege	4416	mstsc.exe

Suspicious use of FindShellTrayWindow 3 IoCs

pid	Process
3448	Explorer.EXE
3448	Explorer.EXE
3448	Explorer.EXE

Suspicious use of SendNotifyMessage 3 IoCs

pid	Process
3448	Explorer.EXE
3448	Explorer.EXE
3448	Explorer.EXE

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 3448 wrote to memory of 4416	3448	Explorer.EXE	83
PID 3448 wrote to memory of 4416	3448	Explorer.EXE	83
PID 3448 wrote to memory of 4416	3448	Explorer.EXE	83
PID 4416 wrote to memory of 2336	4416	mstsc.exe	89
PID 4416 wrote to memory of 2336	4416	mstsc.exe	89
PID 4416 wrote to memory of 2336	4416	mstsc.exe	89

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of WriteProcessMemory
PID:3448
- C:\Users\Admin\AppData\Local\Temp\formbook.exe
  "C:\Users\Admin\AppData\Local\Temp\formbook.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of AdjustPrivilegeToken
  PID:412
- 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:4416
- - C:\Windows\SysWOW64\cmd.exe
    /c del "C:\Users\Admin\AppData\Local\Temp\formbook.exe"
    3⤵
    - System Location Discovery: System Language Discovery
    PID:2336

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/412-0-0x0000000001660000-0x00000000019AA000-memory.dmp

Filesize
3.3MB

Download
memory/412-2-0x0000000000FA0000-0x0000000000FCE000-memory.dmp

Filesize
184KB

Download
memory/412-1-0x0000000000FBE000-0x0000000000FBF000-memory.dmp

Filesize
4KB

Download
memory/3448-3-0x0000000002D20000-0x0000000002E48000-memory.dmp

Filesize
1.2MB

Download
memory/3448-7-0x0000000002D20000-0x0000000002E48000-memory.dmp

Filesize
1.2MB

Download
memory/3448-11-0x00000000030F0000-0x000000000318D000-memory.dmp

Filesize
628KB

Download
memory/3448-12-0x00000000030F0000-0x000000000318D000-memory.dmp

Filesize
628KB

Download
memory/3448-14-0x00000000030F0000-0x000000000318D000-memory.dmp

Filesize
628KB

Download
memory/4416-4-0x0000000000760000-0x000000000089A000-memory.dmp

Filesize
1.2MB

Download
memory/4416-6-0x0000000000760000-0x000000000089A000-memory.dmp

Filesize
1.2MB

Download