formbook | bb11d71564799f9f57ff9798238d6bce285483f03af00d35adee45352a26fb56

Analysis

max time kernel
149s
max time network
154s
platform
windows10-2004_x64
resource
win10v2004-20260513-en
resource tags

arch:x64arch:x86image:win10v2004-20260513-enlocale:en-usos:windows10-2004-x64systemwindows
submitted
02/06/2026, 12:28

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General

Target
tmp8u24p684.js
Size 2.0MB
Sample260602-pnlykaev2m
SHA256 bb11d71564799f9f57ff9798238d6bce285483f03af00d35adee45352a26fb56
MD5 ebd8aa98d332e96df15c36b2762782e6
SHA1 3da92f36ea7c2578b08363d511ad8b6792a6660b
SHA512 09c05992279cc7aa7ffebf5349874660417969d57f3ea528b68eb378578f2812263e6b8810f878522b10f93f21309bd052f6d7f96fd0e282db5e4f85a36a16a0
SSDEEP 24576:Tc52NJYy736ryPVAbbDryWCsnFGzVlInPQn66FX5kmJiPh8I2OV5Y+BicPI/el:TgBN2N2bIsgplIP+pJG3V7Ptl
TLSH
T1A4A5021589C42FB9CFE85A1D80FE161A93F04A8A5416798AFB33BE5BEFF7500011B1D9
MD5 SHA1 SHA512 SSDEEP TLSH

Score

10^/10

adware collection discovery execution formbook persistence 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 3 IoCs

rat

resource	yara_rule
behavioral2/memory/1800-26-0x0000000000D90000-0x0000000000DD6000-memory.dmp	family_formbook
behavioral2/memory/1800-30-0x0000000000D90000-0x0000000000DD6000-memory.dmp	family_formbook
behavioral2/memory/3504-32-0x0000000001290000-0x00000000012D3000-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
41	5020	wscript.exe

Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

Run Powershell and hide display window.

execution

PowerShell

T1059.001

pid	Process
4296	powershell.exe

Drops startup file 1 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\SystemUpdate_iCh5Igxc5SaM_1780403350596.lnk	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	upnpcont.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-668679576-120646659-2289335452-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SystemUpdate_iCh5Igxc5SaM_1780403350596 = "powershell.exe -ExecutionPolicy Bypass -WindowStyle Hidden -File \"C:\\Temp\\ps_iCh5Igxc5SaM_1780403350596.ps1\""	wscript.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SystemUpdate_iCh5Igxc5SaM_1780403350596 = "powershell.exe -ExecutionPolicy Bypass -WindowStyle Hidden -File \"C:\\Temp\\ps_iCh5Igxc5SaM_1780403350596.ps1\""	wscript.exe

ConfuserEx .NET packer 1 IoCs

Detects ConfuserEx .NET packer.

resource	yara_rule
behavioral2/memory/4296-22-0x000002791FDB0000-0x000002791FDCA000-memory.dmp	ConfuserEx

Suspicious use of SetThreadContext 11 IoCs

description	pid	Process	procid_target
PID 4296 set thread context of 1800	4296	powershell.exe	101
PID 1800 set thread context of 4932	1800	aspnet_compiler.exe
PID 1800 set thread context of 5020	1800	aspnet_compiler.exe	86
PID 1800 set thread context of 3504	1800	aspnet_compiler.exe	102
PID 4296 set thread context of 4944	4296	powershell.exe	105
PID 3504 set thread context of 5020	3504	upnpcont.exe	86
PID 4296 set thread context of 3752	4296	powershell.exe	106
PID 4296 set thread context of 4468	4296	powershell.exe	113
PID 4296 set thread context of 4544	4296	powershell.exe	121
PID 3504 set thread context of 3768	3504	upnpcont.exe	114
PID 3504 set thread context of 4756	3504	upnpcont.exe	124

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

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	upnpcont.exe

Suspicious behavior: EnumeratesProcesses 41 IoCs

pid	Process
4296	powershell.exe
4296	powershell.exe
1336	powershell.exe
1336	powershell.exe
4296	powershell.exe
4296	powershell.exe
4296	powershell.exe
4296	powershell.exe
4296	powershell.exe
4296	powershell.exe
4296	powershell.exe
4296	powershell.exe
4296	powershell.exe
4296	powershell.exe
4296	powershell.exe
4296	powershell.exe
1800	aspnet_compiler.exe
1800	aspnet_compiler.exe
1800	aspnet_compiler.exe
1800	aspnet_compiler.exe
4296	powershell.exe
4296	powershell.exe
1800	aspnet_compiler.exe
4296	powershell.exe
4296	powershell.exe
3504	upnpcont.exe
3504	upnpcont.exe
3504	upnpcont.exe
3504	upnpcont.exe
4296	powershell.exe
4944	aspnet_compiler.exe
4296	powershell.exe
3752	aspnet_compiler.exe
4296	powershell.exe
4468	aspnet_compiler.exe
4296	powershell.exe
4296	powershell.exe
4296	powershell.exe
4296	powershell.exe
4296	powershell.exe
4544	aspnet_compiler.exe

Suspicious behavior: MapViewOfSection 10 IoCs

pid	Process
1800	aspnet_compiler.exe
1800	aspnet_compiler.exe
5020	wscript.exe
5020	wscript.exe
3504	upnpcont.exe
3504	upnpcont.exe
3504	upnpcont.exe
3504	upnpcont.exe
3504	upnpcont.exe
3504	upnpcont.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	4296	powershell.exe
Token: SeDebugPrivilege	1336	powershell.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 5020 wrote to memory of 4296	5020	wscript.exe	90
PID 4296 wrote to memory of 2264	4296	powershell.exe	95
PID 4296 wrote to memory of 1780	4296	powershell.exe	96
PID 4296 wrote to memory of 1536	4296	powershell.exe	97
PID 4296 wrote to memory of 3808	4296	powershell.exe	98
PID 4296 wrote to memory of 2032	4296	powershell.exe	99
PID 4296 wrote to memory of 1800	4296	powershell.exe	101
PID 4296 wrote to memory of 1800	4296	powershell.exe	101
PID 4296 wrote to memory of 1800	4296	powershell.exe	101
PID 5020 wrote to memory of 3504	5020	wscript.exe	102
PID 4296 wrote to memory of 4944	4296	powershell.exe	105
PID 4296 wrote to memory of 4944	4296	powershell.exe	105
PID 4296 wrote to memory of 4944	4296	powershell.exe	105
PID 4296 wrote to memory of 3752	4296	powershell.exe	106
PID 4296 wrote to memory of 3752	4296	powershell.exe	106
PID 4296 wrote to memory of 3752	4296	powershell.exe	106
PID 4296 wrote to memory of 4468	4296	powershell.exe	113
PID 4296 wrote to memory of 4468	4296	powershell.exe	113
PID 4296 wrote to memory of 4468	4296	powershell.exe	113
PID 3504 wrote to memory of 3768	3504	upnpcont.exe	114
PID 4296 wrote to memory of 1000	4296	powershell.exe	119
PID 4296 wrote to memory of 3520	4296	powershell.exe	120
PID 4296 wrote to memory of 4544	4296	powershell.exe	121
PID 4296 wrote to memory of 4544	4296	powershell.exe	121
PID 4296 wrote to memory of 4544	4296	powershell.exe	121
PID 3504 wrote to memory of 4756	3504	upnpcont.exe	124

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	upnpcont.exe

C:\Windows\system32\wscript.exe
wscript.exe C:\Users\Admin\AppData\Local\Temp\tmp8u24p684.js
1⤵
- Badlisted process makes network request
- Drops startup file
- Adds Run key to start application
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:5020
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  powershell.exe -ExecutionPolicy Bypass -NoProfile -WindowStyle Hidden -NonInteractive -NoLogo -File "C:\Temp\ps_iCh5Igxc5SaM_1780403350596.ps1"
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious use of SetThreadContext
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:4296
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe
    "C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe"
    3⤵
    PID:2264
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe
    "C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe"
    3⤵
    PID:1780
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe
    "C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe"
    3⤵
    PID:1536
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe
    "C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe"
    3⤵
    PID:3808
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe
    "C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe"
    3⤵
    PID:2032
- - 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:1800
- - 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:4944
- - 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:3752
- - 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:4468
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe
    "C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe"
    3⤵
    PID:1000
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe
    "C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe"
    3⤵
    PID:3520
- - 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:4544
- 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:3504
- - C:\Program Files\Google\Chrome\Application\chrome.exe
    "C:\Program Files\Google\Chrome\Application\chrome.exe"
    3⤵
    PID:3768
- - C:\Program Files\Mozilla Firefox\Firefox.exe
    "C:\Program Files\Mozilla Firefox\Firefox.exe"
    3⤵
    PID:4756

C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:1336

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:4380

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:4156

Network

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

JavaScript

T1059.007

PowerShell

T1059.001

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

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_iCh5Igxc5SaM_1780403350596.ps1

Path C:\Temp\ps_iCh5Igxc5SaM_1780403350596.ps1
Size 1.5MB
SHA256 d6907c27a99cf1e30dbb514684768dcd20c819c53ec18de6897cf259cccbe5cf
MD5 cfd8730ebb2051a86fab67c8f659aa00
SHA1 d9634c01a9fe42933a4ac56de6046867fbbbcd1b
SHA512 fb77fe745a10c84503c848d79461aa974d8ddd8acd6f5ee3a4599c5c20a5c30b9b03d213d942c86ea45829f60892b295730b23655e645eedf62c41251ed2fe89
SSDEEP 24576:o3fTB/1Fk4fyioqZGMQDMlVtII9HK0P8Z/Rm/swiwKsbDpWoVb:Cu4fyGGMOT0EZvgD/J
TLSH
T160653372DFF07C29C7D98628707B9DDE1AD28AE8C85D26DE669403C399BF9C60113D48
MD5 SHA1 SHA512 SSDEEP TLSH

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__PSScriptPolicyTest_4v5gsojs.cii.ps1

Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_4v5gsojs.cii.ps1
Size 60B
SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
MD5 d17fe0a3f47be24a6453e9ef58c94641
SHA1 6ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA512 5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82
TLSH
T177A02228CC303B200020C0080A000002C00B800C080C8C0220000A00B20B820002F080
MD5 SHA1 SHA512 TLSH

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memory/1336-12-0x0000014514DE0000-0x0000014514DF0000-memory.dmp

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memory/1336-20-0x000001452F6C0000-0x000001452F704000-memory.dmp

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memory/1336-21-0x000001452FB20000-0x000001452FB96000-memory.dmp

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memory/1336-28-0x0000014514DE0000-0x0000014514DF0000-memory.dmp

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memory/1336-27-0x0000014514DE0000-0x0000014514DF0000-memory.dmp

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memory/1800-26-0x0000000000D90000-0x0000000000DD6000-memory.dmp

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memory/1800-30-0x0000000000D90000-0x0000000000DD6000-memory.dmp

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memory/1800-24-0x0000000000400000-0x0000000000446000-memory.dmp

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memory/3504-31-0x0000000001290000-0x00000000012D3000-memory.dmp

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memory/3504-32-0x0000000001290000-0x00000000012D3000-memory.dmp

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memory/3768-41-0x0000014F35E30000-0x0000014F35F52000-memory.dmp

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memory/4296-25-0x0000027905470000-0x0000027905480000-memory.dmp

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memory/4296-23-0x000002791FA10000-0x000002791FA16000-memory.dmp

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memory/4296-22-0x000002791FDB0000-0x000002791FDCA000-memory.dmp

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memory/4296-3-0x000002791FA20000-0x000002791FA42000-memory.dmp

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memory/4296-2-0x0000027905470000-0x0000027905480000-memory.dmp

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memory/4756-46-0x00000209BA0B0000-0x00000209BA15F000-memory.dmp

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memory/5020-34-0x0000024564760000-0x0000024564867000-memory.dmp

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memory/5020-42-0x0000024564760000-0x0000024564867000-memory.dmp

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