formbook | f0475f078629d76036bf116bfd0eeb83100242590ef59643c43a1aecb5e29b8c

Analysis

max time kernel
149s
max time network
149s
platform
windows10-2004_x64
resource
win10v2004-20260513-en
resource tags

arch:x64arch:x86image:win10v2004-20260513-enlocale:en-usos:windows10-2004-x64systemwindows
submitted
22/05/2026, 23:25

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General

Target
tmpvn5mz0po.js
Size 2.8MB
Sample260522-3eq3tags5p
SHA256 f0475f078629d76036bf116bfd0eeb83100242590ef59643c43a1aecb5e29b8c
MD5 a63cd64295171bf70052b3a3f830674b
SHA1 49df4f131cc05f5994d16c11ca87be2b46b62998
SHA512 8065bd14145c154f96ae3af46e133aabd9bb0eb6818f1034eee6f4a5cb201d096b4053fa22aec40d702242624e3822f08c714b1451df4fc3df0ebd4a6cdd15bd
SSDEEP 49152:OL/5xSG0ZHiX2GntEGSMBKV9IOOxWhuUb6kxGGsQKcMPN3YiV9vFXChjDyUn3L2C:z
TLSH
T191D55B17D66F974E180D3B61006A5D9AFE89CAFCEF726BC4E0CF90B610EA1110B855B7
MD5 SHA1 SHA512 SSDEEP TLSH

Score

10^/10

adware collection defense_evasion discovery execution formbook rat spyware stealer trojan

Malware Config

Signatures

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

Formbook payload 5 IoCs

rat

resource	yara_rule
behavioral2/memory/3472-18-0x0000000000D00000-0x0000000000D46000-memory.dmp	family_formbook
behavioral2/memory/3472-20-0x0000000000D00000-0x0000000000D46000-memory.dmp	family_formbook
behavioral2/memory/3472-29-0x0000000000D00000-0x0000000000D46000-memory.dmp	family_formbook
behavioral2/memory/656-31-0x0000000000970000-0x00000000009B3000-memory.dmp	family_formbook
behavioral2/memory/656-35-0x0000000000970000-0x00000000009B3000-memory.dmp	family_formbook

Badlisted process makes network request 1 IoCs

Network request originating from process or tool commonly abused by malware.

flow	pid	Process
29	2408	wscript.exe

Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

Run Powershell and hide display window.

execution

PowerShell

T1059.001

pid	Process
4936	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-1-5-21-668679576-120646659-2289335452-1000\Control Panel\International\Geo\Nation	wscript.exe

Accesses Microsoft Outlook profiles 1 TTPs 1 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key enumerated	\REGISTRY\USER\S-1-5-21-668679576-120646659-2289335452-1000\SOFTWARE\Microsoft\Office\16.0\Outlook\Profiles\Outlook	msra.exe

ConfuserEx .NET packer 1 IoCs

Detects ConfuserEx .NET packer.

resource	yara_rule
behavioral2/memory/4936-13-0x000001EFCE940000-0x000001EFCE94C000-memory.dmp	ConfuserEx

Suspicious use of SetThreadContext 13 IoCs

description	pid	Process	procid_target
PID 4936 set thread context of 3472	4936	powershell.exe	103
PID 3472 set thread context of 2408	3472	aspnet_compiler.exe	87
PID 3472 set thread context of 656	3472	aspnet_compiler.exe	104
PID 4936 set thread context of 2728	4936	powershell.exe	107
PID 656 set thread context of 2408	656	msra.exe	87
PID 4936 set thread context of 4504	4936	powershell.exe	108
PID 4936 set thread context of 3592	4936	powershell.exe	109
PID 4936 set thread context of 2352	4936	powershell.exe	112
PID 656 set thread context of 3208	656	msra.exe	111
PID 4936 set thread context of 4828	4936	powershell.exe	115
PID 4936 set thread context of 4676	4936	powershell.exe	116
PID 4936 set thread context of 4768	4936	powershell.exe	119
PID 656 set thread context of 5056	656	msra.exe	117

Command and Scripting Interpreter: JavaScript 1 TTPs
execution

JavaScript
T1059.007
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 1 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	msra.exe

Kills process with taskkill 1 IoCs

defense_evasion

pid	Process
4452	taskkill.exe

Modifies Internet Explorer settings 1 TTPs 1 IoCs

adware spyware

Modify Registry

T1112

description	ioc	Process
Key created	\Registry\User\S-1-5-21-668679576-120646659-2289335452-1000\SOFTWARE\Microsoft\Internet Explorer\IntelliForms\Storage2	msra.exe

Suspicious behavior: EnumeratesProcesses 40 IoCs

pid	Process
4936	powershell.exe
4936	powershell.exe
4936	powershell.exe
4936	powershell.exe
4936	powershell.exe
4936	powershell.exe
4936	powershell.exe
4936	powershell.exe
4936	powershell.exe
4936	powershell.exe
4936	powershell.exe
4936	powershell.exe
4936	powershell.exe
4936	powershell.exe
3472	aspnet_compiler.exe
3472	aspnet_compiler.exe
3472	aspnet_compiler.exe
3472	aspnet_compiler.exe
4936	powershell.exe
4936	powershell.exe
656	msra.exe
656	msra.exe
656	msra.exe
656	msra.exe
4936	powershell.exe
2728	aspnet_compiler.exe
4936	powershell.exe
4504	aspnet_compiler.exe
4936	powershell.exe
3592	aspnet_compiler.exe
4936	powershell.exe
2352	aspnet_compiler.exe
4936	powershell.exe
4828	aspnet_compiler.exe
4936	powershell.exe
4676	aspnet_compiler.exe
4936	powershell.exe
4936	powershell.exe
4936	powershell.exe
4768	aspnet_compiler.exe

Suspicious behavior: MapViewOfSection 9 IoCs

pid	Process
3472	aspnet_compiler.exe
2408	wscript.exe
2408	wscript.exe
656	msra.exe
656	msra.exe
656	msra.exe
656	msra.exe
656	msra.exe
656	msra.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	4936	powershell.exe
Token: SeDebugPrivilege	4452	taskkill.exe

Suspicious use of WriteProcessMemory 35 IoCs

description	pid	Process	procid_target
PID 2408 wrote to memory of 4936	2408	wscript.exe	91
PID 4936 wrote to memory of 4624	4936	powershell.exe	93
PID 4936 wrote to memory of 1212	4936	powershell.exe	94
PID 4936 wrote to memory of 4332	4936	powershell.exe	95
PID 4936 wrote to memory of 1328	4936	powershell.exe	96
PID 4936 wrote to memory of 3300	4936	powershell.exe	97
PID 4936 wrote to memory of 3472	4936	powershell.exe	103
PID 4936 wrote to memory of 3472	4936	powershell.exe	103
PID 4936 wrote to memory of 3472	4936	powershell.exe	103
PID 2408 wrote to memory of 656	2408	wscript.exe	104
PID 4936 wrote to memory of 2728	4936	powershell.exe	107
PID 4936 wrote to memory of 2728	4936	powershell.exe	107
PID 4936 wrote to memory of 2728	4936	powershell.exe	107
PID 4936 wrote to memory of 4504	4936	powershell.exe	108
PID 4936 wrote to memory of 4504	4936	powershell.exe	108
PID 4936 wrote to memory of 4504	4936	powershell.exe	108
PID 4936 wrote to memory of 3592	4936	powershell.exe	109
PID 4936 wrote to memory of 3592	4936	powershell.exe	109
PID 4936 wrote to memory of 3592	4936	powershell.exe	109
PID 656 wrote to memory of 3208	656	msra.exe	111
PID 4936 wrote to memory of 2352	4936	powershell.exe	112
PID 4936 wrote to memory of 2352	4936	powershell.exe	112
PID 4936 wrote to memory of 2352	4936	powershell.exe	112
PID 4936 wrote to memory of 4828	4936	powershell.exe	115
PID 4936 wrote to memory of 4828	4936	powershell.exe	115
PID 4936 wrote to memory of 4828	4936	powershell.exe	115
PID 4936 wrote to memory of 4676	4936	powershell.exe	116
PID 4936 wrote to memory of 4676	4936	powershell.exe	116
PID 4936 wrote to memory of 4676	4936	powershell.exe	116
PID 656 wrote to memory of 5056	656	msra.exe	117
PID 4936 wrote to memory of 1828	4936	powershell.exe	118
PID 4936 wrote to memory of 4768	4936	powershell.exe	119
PID 4936 wrote to memory of 4768	4936	powershell.exe	119
PID 4936 wrote to memory of 4768	4936	powershell.exe	119
PID 2408 wrote to memory of 4452	2408	wscript.exe	120

outlook_office_path 1 IoCs

description	ioc	Process
Key enumerated	\REGISTRY\USER\S-1-5-21-668679576-120646659-2289335452-1000\SOFTWARE\Microsoft\Office\16.0\Outlook\Profiles\Outlook	msra.exe

C:\Windows\system32\wscript.exe
wscript.exe C:\Users\Admin\AppData\Local\Temp\tmpvn5mz0po.js
1⤵
- Badlisted process makes network request
- Checks computer location settings
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:2408
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  powershell.exe -ExecutionPolicy Bypass -NoProfile -WindowStyle Hidden -File "C:\Temp\ps_FWZEae2oOtEK_1779492358065.ps1"
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious use of SetThreadContext
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:4936
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe
    "C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe"
    3⤵
    PID:4624
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe
    "C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe"
    3⤵
    PID:1212
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe
    "C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe"
    3⤵
    PID:4332
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe
    "C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe"
    3⤵
    PID:1328
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe
    "C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe"
    3⤵
    PID:3300
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe
    "C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe"
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious behavior: MapViewOfSection
    PID:3472
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe
    "C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe"
    3⤵
    - Suspicious behavior: EnumeratesProcesses
    PID:2728
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe
    "C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe"
    3⤵
    - Suspicious behavior: EnumeratesProcesses
    PID:4504
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe
    "C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe"
    3⤵
    - Suspicious behavior: EnumeratesProcesses
    PID:3592
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe
    "C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe"
    3⤵
    - Suspicious behavior: EnumeratesProcesses
    PID:2352
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe
    "C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe"
    3⤵
    - Suspicious behavior: EnumeratesProcesses
    PID:4828
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe
    "C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe"
    3⤵
    - Suspicious behavior: EnumeratesProcesses
    PID:4676
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe
    "C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe"
    3⤵
    PID:1828
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe
    "C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe"
    3⤵
    - Suspicious behavior: EnumeratesProcesses
    PID:4768
- C:\Windows\SysWOW64\msra.exe
  "C:\Windows\SysWOW64\msra.exe"
  2⤵
  - Accesses Microsoft Outlook profiles
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Modifies Internet Explorer settings
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of WriteProcessMemory
  - outlook_office_path
  PID:656
- - C:\Program Files\Google\Chrome\Application\chrome.exe
    "C:\Program Files\Google\Chrome\Application\chrome.exe"
    3⤵
    PID:3208
- - C:\Program Files\Mozilla Firefox\Firefox.exe
    "C:\Program Files\Mozilla Firefox\Firefox.exe"
    3⤵
    PID:5056
- C:\Windows\System32\taskkill.exe
  "C:\Windows\System32\taskkill.exe" /f /im wscript.exe
  2⤵
  - Kills process with taskkill
  - Suspicious use of AdjustPrivilegeToken
  PID:4452

C:\Program Files\Google\Chrome\Application\140.0.7339.81\elevation_service.exe
"C:\Program Files\Google\Chrome\Application\140.0.7339.81\elevation_service.exe"
1⤵
PID:2112

C:\Program Files\Google\Chrome\Application\140.0.7339.81\elevation_service.exe
"C:\Program Files\Google\Chrome\Application\140.0.7339.81\elevation_service.exe"
1⤵
PID:3356

Network

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

JavaScript

T1059.007

PowerShell

T1059.001

Persistence

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Email Collection

T1114

Command and Control

Exfiltration

Impact

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Downloads

ps_FWZEae2oOtEK_1779492358065.ps1

Path C:\Temp\ps_FWZEae2oOtEK_1779492358065.ps1
Size 2.1MB
SHA256 053f0ca29e2a7c0edeaf882a4d1dbcfa6224c580a9b6fab0799f2f541e4c8a42
MD5 78dfda21765de801f2e8dd626939cebf
SHA1 461800c6c6e876cb48a7a478278d294bc51817c5
SHA512 f5911dce443e09c44b79e0999e348b72d0d4c9475d5d2f9c21577416e18bbd2a04f3f9dde7a1122c0e2fc0ba846a2be75db5389cbb34aa72a8fe9e042bc44d66
SSDEEP 24576:UlaWC9twF4UK1LbsrBz2x7l4YtjPsIVLhr:z
TLSH
T161A5CFCAD16E44D29C053FC9A8142BC78B2546728A740028367FBD498F7B5FEC15EEE6
MD5 SHA1 SHA512 SSDEEP TLSH

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__PSScriptPolicyTest_xvhux2an.2py.ps1

Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_xvhux2an.2py.ps1
Size 60B
SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
MD5 d17fe0a3f47be24a6453e9ef58c94641
SHA1 6ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA512 5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82
TLSH
T177A02228CC303B200020C0080A000002C00B800C080C8C0220000A00B20B820002F080
MD5 SHA1 SHA512 TLSH

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memory/656-31-0x0000000000970000-0x00000000009B3000-memory.dmp

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memory/656-35-0x0000000000970000-0x00000000009B3000-memory.dmp

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memory/656-26-0x0000000000970000-0x00000000009B3000-memory.dmp

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memory/656-27-0x0000000000970000-0x00000000009B3000-memory.dmp

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memory/2408-50-0x00000260269F0000-0x0000026026AC5000-memory.dmp

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memory/2408-34-0x00000260269F0000-0x0000026026AC5000-memory.dmp

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memory/2408-33-0x0000000000010000-0x0000000000C63000-memory.dmp

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memory/2408-25-0x0000000000010000-0x0000000000C63000-memory.dmp

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memory/3208-42-0x00000270A5610000-0x00000270A5718000-memory.dmp

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memory/3472-30-0x0000000001060000-0x0000000001084000-memory.dmp

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memory/3472-19-0x00000000010B0000-0x00000000013FA000-memory.dmp

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memory/3472-20-0x0000000000D00000-0x0000000000D46000-memory.dmp

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memory/3472-29-0x0000000000D00000-0x0000000000D46000-memory.dmp

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memory/3472-23-0x0000000001060000-0x0000000001084000-memory.dmp

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memory/3472-22-0x0000000000D00000-0x0000000000D46000-memory.dmp

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memory/3472-28-0x0000000000D00000-0x0000000000D46000-memory.dmp

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memory/3472-18-0x0000000000D00000-0x0000000000D46000-memory.dmp

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memory/3472-15-0x0000000000400000-0x0000000000446000-memory.dmp

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memory/4936-14-0x000001EFB3F20000-0x000001EFB3F30000-memory.dmp

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memory/4936-21-0x000001EFB3F20000-0x000001EFB3F30000-memory.dmp

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memory/4936-24-0x000001EFB3F20000-0x000001EFB3F30000-memory.dmp

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memory/4936-16-0x000001EFB3F20000-0x000001EFB3F30000-memory.dmp

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memory/4936-17-0x000001EFB3F20000-0x000001EFB3F30000-memory.dmp

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memory/4936-2-0x000001EFB3F20000-0x000001EFB3F30000-memory.dmp

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memory/4936-13-0x000001EFCE940000-0x000001EFCE94C000-memory.dmp

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memory/4936-12-0x000001EFB3F20000-0x000001EFB3F30000-memory.dmp

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memory/4936-3-0x000001EFCE5B0000-0x000001EFCE5D2000-memory.dmp

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memory/4936-1-0x000001EFB3F20000-0x000001EFB3F30000-memory.dmp

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memory/5056-49-0x0000025BEC0C0000-0x0000025BEC18D000-memory.dmp

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