formbook | 050c3d865ba81f24d449fbdf17fa8a74b99988043878cde345b1960bf2be0161

Analysis

max time kernel
149s
max time network
151s
platform
windows11-21h2_x64
resource
win11-20260513-en
resource tags

arch:x64arch:x86image:win11-20260513-enlocale:en-usos:windows11-21h2-x64systemwindows
submitted
02/06/2026, 12:36

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General

Target
tmpoo8_4lnc.js
Size 2.0MB
Sample260602-ptd5xaew5m
SHA256 050c3d865ba81f24d449fbdf17fa8a74b99988043878cde345b1960bf2be0161
MD5 8251db416a3e8613c0e3b81a9e2a91ca
SHA1 26566c79779aa895508ea0be0e004bfe767cba5e
SHA512 bfee2f5b09491f1406b86f943828918f88031de09773d54c4d49f3dc05278859bd323b03d25d1b8584b6548823e2de18236ca7193a2fb607c9f3f958f0961ab9
SSDEEP 24576:RyncTreSi2NS4jhL7VVwPlk4flv7dzLe2+fAuD8wdmPfG3fPUet:vzia/PAVthWAuTnxt
TLSH
T1BC95021149C83FF9CFAC161D40FE160EA3B14D8E511AA949EB33BD4BEFAB604521B1D9
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 4 IoCs

rat

resource	yara_rule
behavioral3/memory/4452-16-0x00000000012A0000-0x00000000012E6000-memory.dmp	family_formbook
behavioral3/memory/4452-20-0x00000000012A0000-0x00000000012E6000-memory.dmp	family_formbook
behavioral3/memory/4452-24-0x00000000012A0000-0x00000000012E6000-memory.dmp	family_formbook
behavioral3/memory/4824-26-0x0000000000940000-0x0000000000983000-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
2	4812	wscript.exe

Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

Run Powershell and hide display window.

execution

PowerShell

T1059.001

pid	Process
5088	powershell.exe

Accesses Microsoft Outlook profiles 1 TTPs 1 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key enumerated	\REGISTRY\USER\S-1-5-21-2043432456-1617298091-2772621413-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook	upnpcont.exe

ConfuserEx .NET packer 4 IoCs

Detects ConfuserEx .NET packer.

resource	yara_rule
behavioral3/memory/5088-12-0x0000024B69CB0000-0x0000024B69CC2000-memory.dmp	ConfuserEx
behavioral3/memory/5088-14-0x0000024B6BD90000-0x0000024B6BDA2000-memory.dmp	ConfuserEx
behavioral3/memory/5088-30-0x0000024B6BDD0000-0x0000024B6BDE2000-memory.dmp	ConfuserEx
behavioral3/memory/5088-39-0x0000024B6C060000-0x0000024B6C072000-memory.dmp	ConfuserEx

Suspicious use of SetThreadContext 13 IoCs

description	pid	Process	procid_target
PID 5088 set thread context of 4452	5088	powershell.exe	87
PID 4452 set thread context of 4812	4452	aspnet_compiler.exe	79
PID 4452 set thread context of 4824	4452	aspnet_compiler.exe	88
PID 5088 set thread context of 3764	5088	powershell.exe	89
PID 4824 set thread context of 4812	4824	upnpcont.exe	79
PID 5088 set thread context of 4612	5088	powershell.exe	91
PID 5088 set thread context of 940	5088	powershell.exe	92
PID 5088 set thread context of 5072	5088	powershell.exe	95
PID 4824 set thread context of 3800	4824	upnpcont.exe	93
PID 5088 set thread context of 1116	5088	powershell.exe	98
PID 5088 set thread context of 2224	5088	powershell.exe	99
PID 5088 set thread context of 3940	5088	powershell.exe	101
PID 4824 set thread context of 1740	4824	upnpcont.exe	100

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	upnpcont.exe

Kills process with taskkill 1 IoCs

defense_evasion

pid	Process
344	taskkill.exe

Modifies Internet Explorer settings 1 TTPs 1 IoCs

adware spyware

Modify Registry

T1112

description	ioc	Process
Key created	\Registry\User\S-1-5-21-2043432456-1617298091-2772621413-1000\SOFTWARE\Microsoft\Internet Explorer\IntelliForms\Storage2	upnpcont.exe

Suspicious behavior: EnumeratesProcesses 41 IoCs

pid	Process
5088	powershell.exe
5088	powershell.exe
5088	powershell.exe
5088	powershell.exe
5088	powershell.exe
5088	powershell.exe
5088	powershell.exe
5088	powershell.exe
5088	powershell.exe
5088	powershell.exe
5088	powershell.exe
5088	powershell.exe
5088	powershell.exe
5088	powershell.exe
4452	aspnet_compiler.exe
4452	aspnet_compiler.exe
4452	aspnet_compiler.exe
4452	aspnet_compiler.exe
5088	powershell.exe
4824	upnpcont.exe
4824	upnpcont.exe
4824	upnpcont.exe
4824	upnpcont.exe
5088	powershell.exe
3764	aspnet_compiler.exe
5088	powershell.exe
5088	powershell.exe
5088	powershell.exe
4612	aspnet_compiler.exe
5088	powershell.exe
940	aspnet_compiler.exe
5088	powershell.exe
5088	powershell.exe
5088	powershell.exe
5072	aspnet_compiler.exe
5088	powershell.exe
1116	aspnet_compiler.exe
5088	powershell.exe
2224	aspnet_compiler.exe
5088	powershell.exe
3940	aspnet_compiler.exe

Suspicious behavior: MapViewOfSection 9 IoCs

pid	Process
4452	aspnet_compiler.exe
4812	wscript.exe
4812	wscript.exe
4824	upnpcont.exe
4824	upnpcont.exe
4824	upnpcont.exe
4824	upnpcont.exe
4824	upnpcont.exe
4824	upnpcont.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	5088	powershell.exe
Token: SeDebugPrivilege	344	taskkill.exe

Suspicious use of WriteProcessMemory 36 IoCs

description	pid	Process	procid_target
PID 4812 wrote to memory of 5088	4812	wscript.exe	80
PID 5088 wrote to memory of 4928	5088	powershell.exe	82
PID 5088 wrote to memory of 2464	5088	powershell.exe	83
PID 5088 wrote to memory of 4060	5088	powershell.exe	84
PID 5088 wrote to memory of 1252	5088	powershell.exe	85
PID 5088 wrote to memory of 2808	5088	powershell.exe	86
PID 5088 wrote to memory of 4452	5088	powershell.exe	87
PID 5088 wrote to memory of 4452	5088	powershell.exe	87
PID 5088 wrote to memory of 4452	5088	powershell.exe	87
PID 4812 wrote to memory of 4824	4812	wscript.exe	88
PID 5088 wrote to memory of 3764	5088	powershell.exe	89
PID 5088 wrote to memory of 3764	5088	powershell.exe	89
PID 5088 wrote to memory of 3764	5088	powershell.exe	89
PID 5088 wrote to memory of 2532	5088	powershell.exe	90
PID 5088 wrote to memory of 4612	5088	powershell.exe	91
PID 5088 wrote to memory of 4612	5088	powershell.exe	91
PID 5088 wrote to memory of 4612	5088	powershell.exe	91
PID 5088 wrote to memory of 940	5088	powershell.exe	92
PID 5088 wrote to memory of 940	5088	powershell.exe	92
PID 5088 wrote to memory of 940	5088	powershell.exe	92
PID 4824 wrote to memory of 3800	4824	upnpcont.exe	93
PID 5088 wrote to memory of 4144	5088	powershell.exe	94
PID 5088 wrote to memory of 5072	5088	powershell.exe	95
PID 5088 wrote to memory of 5072	5088	powershell.exe	95
PID 5088 wrote to memory of 5072	5088	powershell.exe	95
PID 5088 wrote to memory of 1116	5088	powershell.exe	98
PID 5088 wrote to memory of 1116	5088	powershell.exe	98
PID 5088 wrote to memory of 1116	5088	powershell.exe	98
PID 5088 wrote to memory of 2224	5088	powershell.exe	99
PID 5088 wrote to memory of 2224	5088	powershell.exe	99
PID 5088 wrote to memory of 2224	5088	powershell.exe	99
PID 4824 wrote to memory of 1740	4824	upnpcont.exe	100
PID 5088 wrote to memory of 3940	5088	powershell.exe	101
PID 5088 wrote to memory of 3940	5088	powershell.exe	101
PID 5088 wrote to memory of 3940	5088	powershell.exe	101
PID 4812 wrote to memory of 344	4812	wscript.exe	103

outlook_office_path 1 IoCs

description	ioc	Process
Key enumerated	\REGISTRY\USER\S-1-5-21-2043432456-1617298091-2772621413-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook	upnpcont.exe

C:\Windows\system32\wscript.exe
wscript.exe C:\Users\Admin\AppData\Local\Temp\tmpoo8_4lnc.js
1⤵
- Badlisted process makes network request
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:4812
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  powershell.exe -ExecutionPolicy Bypass -NoProfile -WindowStyle Hidden -File "C:\Temp\ps_tNHGa7KCwRc1_1780403819762.ps1"
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious use of SetThreadContext
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:5088
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe
    "C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe"
    3⤵
    PID:4928
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe
    "C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe"
    3⤵
    PID:2464
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe
    "C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe"
    3⤵
    PID:4060
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe
    "C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe"
    3⤵
    PID:1252
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe
    "C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe"
    3⤵
    PID:2808
- - 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:4452
- - 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:3764
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe
    "C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe"
    3⤵
    PID:2532
- - 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:4612
- - 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:940
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe
    "C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe"
    3⤵
    PID:4144
- - 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:5072
- - 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:1116
- - 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:2224
- - 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:3940
- C:\Windows\SysWOW64\upnpcont.exe
  "C:\Windows\SysWOW64\upnpcont.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:4824
- - C:\Program Files\Google\Chrome\Application\chrome.exe
    "C:\Program Files\Google\Chrome\Application\chrome.exe"
    3⤵
    PID:3800
- - C:\Program Files\Mozilla Firefox\Firefox.exe
    "C:\Program Files\Mozilla Firefox\Firefox.exe"
    3⤵
    PID:1740
- C:\Windows\System32\taskkill.exe
  "C:\Windows\System32\taskkill.exe" /f /im wscript.exe
  2⤵
  - Kills process with taskkill
  - Suspicious use of AdjustPrivilegeToken
  PID:344

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:3284

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:4972

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

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_tNHGa7KCwRc1_1780403819762.ps1

Path C:\Temp\ps_tNHGa7KCwRc1_1780403819762.ps1
Size 1.4MB
SHA256 0280f842d92890efc6644d9394bf500243ff98047e01d3e21428c5a91ee9b716
MD5 63ef5f153b9a7028ca9d1159c0187309
SHA1 9621be3c1f4b57a3580ddc1cb995fc1f32d24ab0
SHA512 9d8aaa46133d835c78a9e75ed6983a0386721c76331e666048fbfdb5586bc1840d9f4c7a446ef8db0de4c8b65718b7134327d0e5a95ff45ebc8e7f3138c56b80
SSDEEP 24576:GqATf9NIR4/BpRPs+4SwAXWsrL4PxZ2ekJcwWrw4wdcuz2KYoLjzrQhup07cHn:e9imWg8wyjOH
TLSH
T1AC6523410F797AB98AAAB71CD733CD9D4BB103F28C8FA4CBD2E915C1097AF015A57819
MD5 SHA1 SHA512 SSDEEP TLSH

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__PSScriptPolicyTest_4j20pgds.2e0.ps1

Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_4j20pgds.2e0.ps1
Size 60B
SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
MD5 d17fe0a3f47be24a6453e9ef58c94641
SHA1 6ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA512 5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82
TLSH
T177A02228CC303B200020C0080A000002C00B800C080C8C0220000A00B20B820002F080
MD5 SHA1 SHA512 TLSH

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memory/1740-45-0x0000024521FA0000-0x0000024522056000-memory.dmp

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memory/3800-37-0x0000018DD41F0000-0x0000018DD42E9000-memory.dmp

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memory/4452-15-0x0000000000400000-0x0000000000446000-memory.dmp

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memory/4452-24-0x00000000012A0000-0x00000000012E6000-memory.dmp

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memory/4452-16-0x00000000012A0000-0x00000000012E6000-memory.dmp

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memory/4452-19-0x00000000017E0000-0x0000000001B36000-memory.dmp

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memory/4452-20-0x00000000012A0000-0x00000000012E6000-memory.dmp

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memory/4812-46-0x0000019671F70000-0x000001967202E000-memory.dmp

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memory/4812-29-0x0000019671F70000-0x000001967202E000-memory.dmp

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memory/4812-28-0x0000000000DF0000-0x0000000002B68000-memory.dmp

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memory/4812-22-0x0000000000DF0000-0x0000000002B68000-memory.dmp

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memory/4824-26-0x0000000000940000-0x0000000000983000-memory.dmp

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memory/4824-23-0x0000000000940000-0x0000000000983000-memory.dmp

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memory/5088-12-0x0000024B69CB0000-0x0000024B69CC2000-memory.dmp

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memory/5088-21-0x0000024B69CC0000-0x0000024B69CD0000-memory.dmp

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memory/5088-18-0x0000024B69CC0000-0x0000024B69CD0000-memory.dmp

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memory/5088-17-0x0000024B69CC0000-0x0000024B69CD0000-memory.dmp

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memory/5088-14-0x0000024B6BD90000-0x0000024B6BDA2000-memory.dmp

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memory/5088-13-0x0000024B6BD60000-0x0000024B6BD66000-memory.dmp

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memory/5088-1-0x0000024B69CC0000-0x0000024B69CD0000-memory.dmp

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memory/5088-30-0x0000024B6BDD0000-0x0000024B6BDE2000-memory.dmp

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memory/5088-10-0x0000024B69CC0000-0x0000024B69CD0000-memory.dmp

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memory/5088-39-0x0000024B6C060000-0x0000024B6C072000-memory.dmp

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memory/5088-8-0x0000024B68110000-0x0000024B68132000-memory.dmp

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memory/5088-2-0x0000024B69CC0000-0x0000024B69CD0000-memory.dmp

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