formbook | 1b9e77854e399411406c1f8e3fa6e0bceb4a1284c7bedeed503bcb24bdcfbe30

Analysis

max time kernel
149s
max time network
123s
platform
windows7_x64
resource
win7-20240705-en
resource tags

arch:x64arch:x86image:win7-20240705-enlocale:en-usos:windows7-x64system
submitted
05-08-2024 06:45

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General

Target

CZyOWoN2hiszA6d.exe
Size

653KB
MD5

4f9709aa08fb342403b4a9d952419184
SHA1

07913a57cfe7e1674525397f571ae98d3195a11c
SHA256

1b9e77854e399411406c1f8e3fa6e0bceb4a1284c7bedeed503bcb24bdcfbe30
SHA512

cde7fe3db0ee4fd1876e3b40601e4d9c81ae4b2fa525335d183c9d0314fde6eaaa5820303d3fd2eb0a008f09511c08967fe0ba00fea83c9dee8d98d80f513fe0
SSDEEP

12288:3Zxa/zmcDXmyLO609WOgt3MbOSJ6gAFss9ewhMBdULG503vdPlLVBkR:3ZxaakZb0wr3MRJ7U9ZMBYG503DLVc

Score

10^/10

formbook v15n discovery execution rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

Version

4.1

Campaign

v15n

Decoy

dyahwoahjuk.store

toysstorm.com

y7rak9.com

2222233p6.shop

betbox2341.com

visualvarta.com

nijssenadventures.com

main-12.site

leng4d.net

kurainu.xyz

hatesa.xyz

culturamosaica.com

supermallify.store

gigboard.app

rxforgive.com

ameliestones.com

kapalwin.live

tier.credit

sobol-ksa.com

faredeal.online

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
behavioral1/memory/1272-24-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral1/memory/1272-28-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral1/memory/1692-30-0x00000000000C0000-0x00000000000EF000-memory.dmp	formbook

Command and Scripting Interpreter: PowerShell 1 TTPs 2 IoCs

Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

execution

PowerShell

T1059.001

pid	Process
2652	powershell.exe
2768	powershell.exe

Deletes itself 1 IoCs

pid	Process
3028	cmd.exe

Suspicious use of SetThreadContext 4 IoCs

description	pid	Process	procid_target
PID 2852 set thread context of 1272	2852	CZyOWoN2hiszA6d.exe	36
PID 1272 set thread context of 1232	1272	CZyOWoN2hiszA6d.exe	21
PID 1272 set thread context of 1232	1272	CZyOWoN2hiszA6d.exe	21
PID 1692 set thread context of 1232	1692	wlanext.exe	21

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 6 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	powershell.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	wlanext.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	CZyOWoN2hiszA6d.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	powershell.exe

Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence execution

Scheduled Task

T1053.005

pid	Process
2956	schtasks.exe

Suspicious behavior: EnumeratesProcesses 31 IoCs

pid	Process
2768	powershell.exe
2652	powershell.exe
1272	CZyOWoN2hiszA6d.exe
1272	CZyOWoN2hiszA6d.exe
1272	CZyOWoN2hiszA6d.exe
1692	wlanext.exe
1692	wlanext.exe
1692	wlanext.exe
1692	wlanext.exe
1692	wlanext.exe
1692	wlanext.exe
1692	wlanext.exe
1692	wlanext.exe
1692	wlanext.exe
1692	wlanext.exe
1692	wlanext.exe
1692	wlanext.exe
1692	wlanext.exe
1692	wlanext.exe
1692	wlanext.exe
1692	wlanext.exe
1692	wlanext.exe
1692	wlanext.exe
1692	wlanext.exe
1692	wlanext.exe
1692	wlanext.exe
1692	wlanext.exe
1692	wlanext.exe
1692	wlanext.exe
1692	wlanext.exe
1692	wlanext.exe

Suspicious behavior: MapViewOfSection 6 IoCs

pid	Process
1272	CZyOWoN2hiszA6d.exe
1272	CZyOWoN2hiszA6d.exe
1272	CZyOWoN2hiszA6d.exe
1272	CZyOWoN2hiszA6d.exe
1692	wlanext.exe
1692	wlanext.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

description	pid	Process
Token: SeDebugPrivilege	2768	powershell.exe
Token: SeDebugPrivilege	2652	powershell.exe
Token: SeDebugPrivilege	1272	CZyOWoN2hiszA6d.exe
Token: SeDebugPrivilege	1692	wlanext.exe

Suspicious use of WriteProcessMemory 27 IoCs

description	pid	Process	procid_target
PID 2852 wrote to memory of 2652	2852	CZyOWoN2hiszA6d.exe	30
PID 2852 wrote to memory of 2652	2852	CZyOWoN2hiszA6d.exe	30
PID 2852 wrote to memory of 2652	2852	CZyOWoN2hiszA6d.exe	30
PID 2852 wrote to memory of 2652	2852	CZyOWoN2hiszA6d.exe	30
PID 2852 wrote to memory of 2768	2852	CZyOWoN2hiszA6d.exe	32
PID 2852 wrote to memory of 2768	2852	CZyOWoN2hiszA6d.exe	32
PID 2852 wrote to memory of 2768	2852	CZyOWoN2hiszA6d.exe	32
PID 2852 wrote to memory of 2768	2852	CZyOWoN2hiszA6d.exe	32
PID 2852 wrote to memory of 2956	2852	CZyOWoN2hiszA6d.exe	34
PID 2852 wrote to memory of 2956	2852	CZyOWoN2hiszA6d.exe	34
PID 2852 wrote to memory of 2956	2852	CZyOWoN2hiszA6d.exe	34
PID 2852 wrote to memory of 2956	2852	CZyOWoN2hiszA6d.exe	34
PID 2852 wrote to memory of 1272	2852	CZyOWoN2hiszA6d.exe	36
PID 2852 wrote to memory of 1272	2852	CZyOWoN2hiszA6d.exe	36
PID 2852 wrote to memory of 1272	2852	CZyOWoN2hiszA6d.exe	36
PID 2852 wrote to memory of 1272	2852	CZyOWoN2hiszA6d.exe	36
PID 2852 wrote to memory of 1272	2852	CZyOWoN2hiszA6d.exe	36
PID 2852 wrote to memory of 1272	2852	CZyOWoN2hiszA6d.exe	36
PID 2852 wrote to memory of 1272	2852	CZyOWoN2hiszA6d.exe	36
PID 1232 wrote to memory of 1692	1232	Explorer.EXE	37
PID 1232 wrote to memory of 1692	1232	Explorer.EXE	37
PID 1232 wrote to memory of 1692	1232	Explorer.EXE	37
PID 1232 wrote to memory of 1692	1232	Explorer.EXE	37
PID 1692 wrote to memory of 3028	1692	wlanext.exe	38
PID 1692 wrote to memory of 3028	1692	wlanext.exe	38
PID 1692 wrote to memory of 3028	1692	wlanext.exe	38
PID 1692 wrote to memory of 3028	1692	wlanext.exe	38

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of WriteProcessMemory
PID:1232
- C:\Users\Admin\AppData\Local\Temp\CZyOWoN2hiszA6d.exe
  "C:\Users\Admin\AppData\Local\Temp\CZyOWoN2hiszA6d.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2852
- - C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Local\Temp\CZyOWoN2hiszA6d.exe"
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:2652
- - C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\dacYzRiJuWECy.exe"
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:2768
- - C:\Windows\SysWOW64\schtasks.exe
    "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\dacYzRiJuWECy" /XML "C:\Users\Admin\AppData\Local\Temp\tmp5A50.tmp"
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:2956
- - C:\Users\Admin\AppData\Local\Temp\CZyOWoN2hiszA6d.exe
    "C:\Users\Admin\AppData\Local\Temp\CZyOWoN2hiszA6d.exe"
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious behavior: MapViewOfSection
    - Suspicious use of AdjustPrivilegeToken
    PID:1272
- C:\Windows\SysWOW64\wlanext.exe
  "C:\Windows\SysWOW64\wlanext.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:1692
- - C:\Windows\SysWOW64\cmd.exe
    /c del "C:\Users\Admin\AppData\Local\Temp\CZyOWoN2hiszA6d.exe"
    3⤵
    - Deletes itself
    - System Location Discovery: System Language Discovery
    PID:3028

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

PowerShell

T1059.001

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Persistence

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Privilege Escalation

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

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

C:\Users\Admin\AppData\Local\Temp\tmp5A50.tmp

Filesize
1KB

MD5
17b0cb4b3453e6d9edefd3f7ae41b3db

SHA1
e74a13fa6cfd849ffcbd33a971bcf6c178c49bfb

SHA256
948688ef23972998e686e81702125ca5387450e943478e9911a3ee510baed64a

SHA512
b3619b3feeb8af618203635fcd34a09ae57c8c5cf807c8fbcceec089f2c66b11ca75c348f1855fc1f10f5ab999fc449fa564680fef1e21ed41c69612c7f4bf01

Download Submit
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\d93f411851d7c929.customDestinations-ms

Filesize
7KB

MD5
02632072cfcafd8fb6e46b870d269107

SHA1
3e77927c5085aad10795b9cf146368f08034a7e3

SHA256
edd594e120bfb4ba70ad3596d73d3bcfa17301f571d70b691bb6880598893505

SHA512
a6c92e9c5f95245bd8e2c5c64db3d7033f7d45c53bf93636ac6f3e56b65835f26dc16c3a87e0ba7a3bc49c8bfde9ce24d8dfcbcd35218ce7fca6240782244338

Download Submit
memory/1232-27-0x0000000000010000-0x0000000000020000-memory.dmp

Filesize
64KB

Download
memory/1272-24-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/1272-21-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/1272-28-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/1272-19-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/1272-23-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/1692-30-0x00000000000C0000-0x00000000000EF000-memory.dmp

Filesize
188KB

Download
memory/1692-29-0x0000000000B00000-0x0000000000B16000-memory.dmp

Filesize
88KB

Download
memory/2852-3-0x00000000008B0000-0x00000000008C8000-memory.dmp

Filesize
96KB

Download
memory/2852-25-0x0000000074160000-0x000000007484E000-memory.dmp

Filesize
6.9MB

Download
memory/2852-0-0x000000007416E000-0x000000007416F000-memory.dmp

Filesize
4KB

Download
memory/2852-1-0x0000000000E70000-0x0000000000F16000-memory.dmp

Filesize
664KB

Download
memory/2852-2-0x0000000074160000-0x000000007484E000-memory.dmp

Filesize
6.9MB

Download
memory/2852-4-0x0000000000430000-0x000000000043E000-memory.dmp

Filesize
56KB

Download
memory/2852-6-0x0000000005B70000-0x0000000005BE6000-memory.dmp

Filesize
472KB

Download
memory/2852-5-0x00000000006D0000-0x00000000006E6000-memory.dmp

Filesize
88KB

Download