formbook | 438b4a7fd44c48ebaa0ef1e7368b7d344de8040ed247e77b5c84ebe0c2592629

Analysis

max time kernel
145s
max time network
130s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
23-08-2024 04:13

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General

Target

image_00yu.exe
Size

684KB
MD5

5b671e65052b9fe3672bf5671193a415
SHA1

42e2cbed170357699d64541d458ee4bab1c9e04d
SHA256

8b4af4f4e4ff7945788cfd890de28517157ebbd54b28561b02eaa4774a8c6573
SHA512

008225e7dcb3a9241c465a7f356c003758004392b3fc5aa777151ccd34c4fd602bad6f839416af9bb0960a2d08588c6b80ac375499b07c1f05229a256a758f14
SSDEEP

12288:v2xu/Zx7GpuKjGAes2CEo1xBPuE8/ygGt6pQeI9usAtZGobkkN++KQ/YRjIkR:eQ/7I3xeuEQLcyrQ99tAxkN45Nf

Score

10^/10

formbook rn10 discovery execution rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

Version

4.1

Campaign

rn10

Decoy

kedai168et.com

mental-olympics.com

pussybuildsstrongbones.net

857691.shop

hisellers.net

exposurecophotography.com

beaded-boutique.net

wednesdayholdings.com

plesacv.xyz

manonlineros.com

a0204.shop

333689g.com

dyprl716h.xyz

pulseirabet.com

fnet.work

bo-2024-001-v1-d1.xyz

ongaurdsecurity.com

giulianacristini.com

miladamani.com

magicalrealmshopkeeper.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
behavioral2/memory/4864-14-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral2/memory/4864-24-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral2/memory/4940-71-0x00000000005B0000-0x00000000005DF000-memory.dmp	formbook

Blocklisted process makes network request 1 IoCs

flow	pid	Process
56	4940	cscript.exe

Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

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

execution

PowerShell

T1059.001

pid	Process
972	powershell.exe

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-2412658365-3084825385-3340777666-1000\Control Panel\International\Geo\Nation	image_00yu.exe

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 2508 set thread context of 4864	2508	image_00yu.exe	100
PID 4864 set thread context of 3484	4864	image_00yu.exe	56
PID 4940 set thread context of 3484	4940	cscript.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 4 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	cscript.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	image_00yu.exe

Modifies registry class 2 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{4336a54d-038b-4685-ab02-99bb52d3fb8b}\Instance\	Explorer.EXE
Key created	\REGISTRY\USER\S-1-5-21-2412658365-3084825385-3340777666-1000_Classes\CLSID\{018D5C66-4533-4307-9B53-224DE2ED1FE6}\Instance\	Explorer.EXE

Suspicious behavior: EnumeratesProcesses 61 IoCs

pid	Process
2508	image_00yu.exe
2508	image_00yu.exe
2508	image_00yu.exe
2508	image_00yu.exe
2508	image_00yu.exe
2508	image_00yu.exe
2508	image_00yu.exe
4864	image_00yu.exe
4864	image_00yu.exe
4864	image_00yu.exe
4864	image_00yu.exe
972	powershell.exe
972	powershell.exe
4940	cscript.exe
4940	cscript.exe
4940	cscript.exe
4940	cscript.exe
4940	cscript.exe
4940	cscript.exe
4940	cscript.exe
4940	cscript.exe
4940	cscript.exe
4940	cscript.exe
4940	cscript.exe
4940	cscript.exe
4940	cscript.exe
4940	cscript.exe
4940	cscript.exe
4940	cscript.exe
4940	cscript.exe
4940	cscript.exe
4940	cscript.exe
4940	cscript.exe
4940	cscript.exe
4940	cscript.exe
4940	cscript.exe
4940	cscript.exe
4940	cscript.exe
4940	cscript.exe
4940	cscript.exe
4940	cscript.exe
4940	cscript.exe
4940	cscript.exe
4940	cscript.exe
4940	cscript.exe
4940	cscript.exe
4940	cscript.exe
4940	cscript.exe
4940	cscript.exe
4940	cscript.exe
4940	cscript.exe
4940	cscript.exe
4940	cscript.exe
4940	cscript.exe
4940	cscript.exe
4940	cscript.exe
4940	cscript.exe
4940	cscript.exe
4940	cscript.exe
4940	cscript.exe
4940	cscript.exe

Suspicious behavior: MapViewOfSection 5 IoCs

pid	Process
4864	image_00yu.exe
4864	image_00yu.exe
4864	image_00yu.exe
4940	cscript.exe
4940	cscript.exe

Suspicious use of AdjustPrivilegeToken 6 IoCs

description	pid	Process
Token: SeDebugPrivilege	2508	image_00yu.exe
Token: SeDebugPrivilege	4864	image_00yu.exe
Token: SeDebugPrivilege	972	powershell.exe
Token: SeDebugPrivilege	4940	cscript.exe
Token: SeShutdownPrivilege	3484	Explorer.EXE
Token: SeCreatePagefilePrivilege	3484	Explorer.EXE

Suspicious use of UnmapMainImage 1 IoCs

pid	Process
3484	Explorer.EXE

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 2508 wrote to memory of 972	2508	image_00yu.exe	98
PID 2508 wrote to memory of 972	2508	image_00yu.exe	98
PID 2508 wrote to memory of 972	2508	image_00yu.exe	98
PID 2508 wrote to memory of 4864	2508	image_00yu.exe	100
PID 2508 wrote to memory of 4864	2508	image_00yu.exe	100
PID 2508 wrote to memory of 4864	2508	image_00yu.exe	100
PID 2508 wrote to memory of 4864	2508	image_00yu.exe	100
PID 2508 wrote to memory of 4864	2508	image_00yu.exe	100
PID 2508 wrote to memory of 4864	2508	image_00yu.exe	100
PID 3484 wrote to memory of 4940	3484	Explorer.EXE	101
PID 3484 wrote to memory of 4940	3484	Explorer.EXE	101
PID 3484 wrote to memory of 4940	3484	Explorer.EXE	101
PID 4940 wrote to memory of 4428	4940	cscript.exe	102
PID 4940 wrote to memory of 4428	4940	cscript.exe	102
PID 4940 wrote to memory of 4428	4940	cscript.exe	102

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Modifies registry class
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:3484
- C:\Users\Admin\AppData\Local\Temp\image_00yu.exe
  "C:\Users\Admin\AppData\Local\Temp\image_00yu.exe"
  2⤵
  - Checks computer location settings
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2508
- - 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\image_00yu.exe"
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:972
- - C:\Users\Admin\AppData\Local\Temp\image_00yu.exe
    "C:\Users\Admin\AppData\Local\Temp\image_00yu.exe"
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious behavior: MapViewOfSection
    - Suspicious use of AdjustPrivilegeToken
    PID:4864
- C:\Windows\SysWOW64\cscript.exe
  "C:\Windows\SysWOW64\cscript.exe"
  2⤵
  - Blocklisted process makes network request
  - 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:4940
- - C:\Windows\SysWOW64\cmd.exe
    /c del "C:\Users\Admin\AppData\Local\Temp\image_00yu.exe"
    3⤵
    - System Location Discovery: System Language Discovery
    PID:4428

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

PowerShell

T1059.001

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

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\__PSScriptPolicyTest_hnfjw3cb.syq.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/972-58-0x0000000007000000-0x000000000701A000-memory.dmp

Filesize
104KB

Download
memory/972-56-0x0000000006ED0000-0x0000000006F73000-memory.dmp

Filesize
652KB

Download
memory/972-28-0x0000000004EC0000-0x0000000004F26000-memory.dmp

Filesize
408KB

Download
memory/972-70-0x0000000075350000-0x0000000075B00000-memory.dmp

Filesize
7.7MB

Download
memory/972-29-0x0000000004F30000-0x0000000004F96000-memory.dmp

Filesize
408KB

Download
memory/972-67-0x0000000007320000-0x0000000007328000-memory.dmp

Filesize
32KB

Download
memory/972-66-0x0000000007340000-0x000000000735A000-memory.dmp

Filesize
104KB

Download
memory/972-65-0x0000000007240000-0x0000000007254000-memory.dmp

Filesize
80KB

Download
memory/972-64-0x0000000007230000-0x000000000723E000-memory.dmp

Filesize
56KB

Download
memory/972-61-0x0000000007200000-0x0000000007211000-memory.dmp

Filesize
68KB

Download
memory/972-60-0x0000000007280000-0x0000000007316000-memory.dmp

Filesize
600KB

Download
memory/972-59-0x0000000007070000-0x000000000707A000-memory.dmp

Filesize
40KB

Download
memory/972-57-0x0000000007650000-0x0000000007CCA000-memory.dmp

Filesize
6.5MB

Download
memory/972-27-0x0000000004D20000-0x0000000004D42000-memory.dmp

Filesize
136KB

Download
memory/972-17-0x0000000005070000-0x0000000005698000-memory.dmp

Filesize
6.2MB

Download
memory/972-16-0x00000000023B0000-0x00000000023E6000-memory.dmp

Filesize
216KB

Download
memory/972-19-0x0000000075350000-0x0000000075B00000-memory.dmp

Filesize
7.7MB

Download
memory/972-50-0x0000000004A30000-0x0000000004A40000-memory.dmp

Filesize
64KB

Download
memory/972-21-0x0000000075350000-0x0000000075B00000-memory.dmp

Filesize
7.7MB

Download
memory/972-55-0x0000000006CA0000-0x0000000006CBE000-memory.dmp

Filesize
120KB

Download
memory/972-44-0x0000000071C10000-0x0000000071C5C000-memory.dmp

Filesize
304KB

Download
memory/972-43-0x0000000006C40000-0x0000000006C72000-memory.dmp

Filesize
200KB

Download
memory/972-42-0x000000007F470000-0x000000007F480000-memory.dmp

Filesize
64KB

Download
memory/972-18-0x000000007535E000-0x000000007535F000-memory.dmp

Filesize
4KB

Download
memory/972-41-0x0000000005D00000-0x0000000005D4C000-memory.dmp

Filesize
304KB

Download
memory/972-40-0x0000000005CA0000-0x0000000005CBE000-memory.dmp

Filesize
120KB

Download
memory/972-39-0x00000000056A0000-0x00000000059F4000-memory.dmp

Filesize
3.3MB

Download
memory/2508-13-0x0000000006810000-0x0000000006886000-memory.dmp

Filesize
472KB

Download
memory/2508-7-0x0000000006BA0000-0x0000000006C3A000-memory.dmp

Filesize
616KB

Download
memory/2508-5-0x0000000075350000-0x0000000075B00000-memory.dmp

Filesize
7.7MB

Download
memory/2508-3-0x00000000054B0000-0x0000000005542000-memory.dmp

Filesize
584KB

Download
memory/2508-1-0x0000000000970000-0x0000000000A1E000-memory.dmp

Filesize
696KB

Download
memory/2508-6-0x00000000056E0000-0x000000000577C000-memory.dmp

Filesize
624KB

Download
memory/2508-4-0x0000000005420000-0x000000000542A000-memory.dmp

Filesize
40KB

Download
memory/2508-8-0x00000000059F0000-0x0000000005A0A000-memory.dmp

Filesize
104KB

Download
memory/2508-20-0x0000000075350000-0x0000000075B00000-memory.dmp

Filesize
7.7MB

Download
memory/2508-9-0x000000007535E000-0x000000007535F000-memory.dmp

Filesize
4KB

Download
memory/2508-2-0x0000000005A60000-0x0000000006004000-memory.dmp

Filesize
5.6MB

Download
memory/2508-0-0x000000007535E000-0x000000007535F000-memory.dmp

Filesize
4KB

Download
memory/2508-12-0x0000000005A10000-0x0000000005A20000-memory.dmp

Filesize
64KB

Download
memory/2508-11-0x0000000005860000-0x000000000586C000-memory.dmp

Filesize
48KB

Download
memory/2508-10-0x0000000075350000-0x0000000075B00000-memory.dmp

Filesize
7.7MB

Download
memory/3484-26-0x0000000008A60000-0x0000000008B18000-memory.dmp

Filesize
736KB

Download
memory/3484-72-0x0000000008A60000-0x0000000008B18000-memory.dmp

Filesize
736KB

Download
memory/3484-76-0x0000000007740000-0x0000000007829000-memory.dmp

Filesize
932KB

Download
memory/4864-14-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/4864-23-0x00000000017B0000-0x0000000001AFA000-memory.dmp

Filesize
3.3MB

Download
memory/4864-25-0x0000000001770000-0x0000000001784000-memory.dmp

Filesize
80KB

Download
memory/4864-24-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/4940-63-0x00000000000B0000-0x00000000000D7000-memory.dmp

Filesize
156KB

Download
memory/4940-62-0x00000000000B0000-0x00000000000D7000-memory.dmp

Filesize
156KB

Download
memory/4940-71-0x00000000005B0000-0x00000000005DF000-memory.dmp

Filesize
188KB

Download