formbook | 050c3d865ba81f24d449fbdf17fa8a74b99988043878cde345b1960bf2be0161

Analysis

max time kernel
149s
max time network
152s
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, 12:36

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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

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
behavioral2/memory/1152-20-0x0000000000B00000-0x0000000000B46000-memory.dmp	family_formbook
behavioral2/memory/1152-22-0x0000000000B00000-0x0000000000B46000-memory.dmp	family_formbook
behavioral2/memory/1152-30-0x0000000000B00000-0x0000000000B46000-memory.dmp	family_formbook
behavioral2/memory/3852-32-0x0000000000930000-0x0000000000973000-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
35	2948	wscript.exe

Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

Run Powershell and hide display window.

execution

PowerShell

T1059.001

pid	Process
4780	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-1-5-21-3053180483-1881419501-3594244048-1000\Control Panel\International\Geo\Nation	wscript.exe

ConfuserEx .NET packer 3 IoCs

Detects ConfuserEx .NET packer.

resource	yara_rule
behavioral2/memory/4780-13-0x00000235780C0000-0x00000235780D2000-memory.dmp	ConfuserEx
behavioral2/memory/4780-16-0x00000235780E0000-0x00000235780F2000-memory.dmp	ConfuserEx
behavioral2/memory/4780-40-0x0000023576320000-0x0000023576332000-memory.dmp	ConfuserEx

Suspicious use of SetThreadContext 11 IoCs

description	pid	Process	procid_target
PID 4780 set thread context of 1152	4780	powershell.exe	100
PID 1152 set thread context of 2948	1152	aspnet_compiler.exe	86
PID 1152 set thread context of 3852	1152	aspnet_compiler.exe	101
PID 4780 set thread context of 3068	4780	powershell.exe	107
PID 3852 set thread context of 2948	3852	upnpcont.exe	86
PID 4780 set thread context of 2704	4780	powershell.exe	115
PID 4780 set thread context of 368	4780	powershell.exe	118
PID 4780 set thread context of 5820	4780	powershell.exe	122
PID 4780 set thread context of 5724	4780	powershell.exe	123
PID 4780 set thread context of 5728	4780	powershell.exe	125
PID 4780 set thread context of 876	4780	powershell.exe	126

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
2836	taskkill.exe

Suspicious behavior: EnumeratesProcesses 48 IoCs

pid	Process
4780	powershell.exe
4780	powershell.exe
4780	powershell.exe
4780	powershell.exe
4780	powershell.exe
4780	powershell.exe
4780	powershell.exe
4780	powershell.exe
4780	powershell.exe
4780	powershell.exe
4780	powershell.exe
4780	powershell.exe
4780	powershell.exe
4780	powershell.exe
4780	powershell.exe
4780	powershell.exe
4780	powershell.exe
4780	powershell.exe
4780	powershell.exe
4780	powershell.exe
1152	aspnet_compiler.exe
1152	aspnet_compiler.exe
1152	aspnet_compiler.exe
1152	aspnet_compiler.exe
4780	powershell.exe
3852	upnpcont.exe
3852	upnpcont.exe
3852	upnpcont.exe
3852	upnpcont.exe
4780	powershell.exe
4780	powershell.exe
3068	aspnet_compiler.exe
4780	powershell.exe
2704	aspnet_compiler.exe
4780	powershell.exe
4780	powershell.exe
4780	powershell.exe
368	aspnet_compiler.exe
4780	powershell.exe
4780	powershell.exe
4780	powershell.exe
5820	aspnet_compiler.exe
4780	powershell.exe
5724	aspnet_compiler.exe
4780	powershell.exe
5728	aspnet_compiler.exe
4780	powershell.exe
876	aspnet_compiler.exe

Suspicious behavior: MapViewOfSection 5 IoCs

pid	Process
1152	aspnet_compiler.exe
2948	wscript.exe
2948	wscript.exe
3852	upnpcont.exe
3852	upnpcont.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	4780	powershell.exe
Token: SeDebugPrivilege	2836	taskkill.exe

Suspicious use of WriteProcessMemory 37 IoCs

description	pid	Process	procid_target
PID 2948 wrote to memory of 4780	2948	wscript.exe	88
PID 4780 wrote to memory of 3764	4780	powershell.exe	91
PID 4780 wrote to memory of 4236	4780	powershell.exe	92
PID 4780 wrote to memory of 5232	4780	powershell.exe	93
PID 4780 wrote to memory of 3808	4780	powershell.exe	94
PID 4780 wrote to memory of 5612	4780	powershell.exe	95
PID 4780 wrote to memory of 4224	4780	powershell.exe	97
PID 4780 wrote to memory of 2880	4780	powershell.exe	98
PID 4780 wrote to memory of 872	4780	powershell.exe	99
PID 4780 wrote to memory of 1152	4780	powershell.exe	100
PID 4780 wrote to memory of 1152	4780	powershell.exe	100
PID 4780 wrote to memory of 1152	4780	powershell.exe	100
PID 2948 wrote to memory of 3852	2948	wscript.exe	101
PID 4780 wrote to memory of 3068	4780	powershell.exe	107
PID 4780 wrote to memory of 3068	4780	powershell.exe	107
PID 4780 wrote to memory of 3068	4780	powershell.exe	107
PID 4780 wrote to memory of 2704	4780	powershell.exe	115
PID 4780 wrote to memory of 2704	4780	powershell.exe	115
PID 4780 wrote to memory of 2704	4780	powershell.exe	115
PID 4780 wrote to memory of 5900	4780	powershell.exe	117
PID 4780 wrote to memory of 368	4780	powershell.exe	118
PID 4780 wrote to memory of 368	4780	powershell.exe	118
PID 4780 wrote to memory of 368	4780	powershell.exe	118
PID 4780 wrote to memory of 3984	4780	powershell.exe	121
PID 4780 wrote to memory of 5820	4780	powershell.exe	122
PID 4780 wrote to memory of 5820	4780	powershell.exe	122
PID 4780 wrote to memory of 5820	4780	powershell.exe	122
PID 4780 wrote to memory of 5724	4780	powershell.exe	123
PID 4780 wrote to memory of 5724	4780	powershell.exe	123
PID 4780 wrote to memory of 5724	4780	powershell.exe	123
PID 4780 wrote to memory of 5728	4780	powershell.exe	125
PID 4780 wrote to memory of 5728	4780	powershell.exe	125
PID 4780 wrote to memory of 5728	4780	powershell.exe	125
PID 4780 wrote to memory of 876	4780	powershell.exe	126
PID 4780 wrote to memory of 876	4780	powershell.exe	126
PID 4780 wrote to memory of 876	4780	powershell.exe	126
PID 2948 wrote to memory of 2836	2948	wscript.exe	127

C:\Windows\system32\wscript.exe
wscript.exe C:\Users\Admin\AppData\Local\Temp\tmpoo8_4lnc.js
1⤵
- Badlisted process makes network request
- Checks computer location settings
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:2948
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  powershell.exe -ExecutionPolicy Bypass -NoProfile -WindowStyle Hidden -File "C:\Temp\ps_VjyygZnXH2pg_1780403821928.ps1"
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious use of SetThreadContext
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:4780
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe
    "C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe"
    3⤵
    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:4236
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe
    "C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe"
    3⤵
    PID:5232
- - 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:5612
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe
    "C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe"
    3⤵
    PID:4224
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe
    "C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe"
    3⤵
    PID:2880
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe
    "C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe"
    3⤵
    PID:872
- - 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:1152
- - 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:3068
- - 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:2704
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe
    "C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe"
    3⤵
    PID:5900
- - 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:368
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe
    "C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe"
    3⤵
    PID:3984
- - 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:5820
- - 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:5724
- - 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:5728
- - 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:876
- C:\Windows\SysWOW64\upnpcont.exe
  "C:\Windows\SysWOW64\upnpcont.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: MapViewOfSection
  PID:3852
- C:\Windows\System32\taskkill.exe
  "C:\Windows\System32\taskkill.exe" /f /im wscript.exe
  2⤵
  - Kills process with taskkill
  - Suspicious use of AdjustPrivilegeToken
  PID:2836

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

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

Replay Monitor

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Downloads

ps_VjyygZnXH2pg_1780403821928.ps1

Path C:\Temp\ps_VjyygZnXH2pg_1780403821928.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_tqneugvq.z3p.ps1

Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_tqneugvq.z3p.ps1
Size 60B
SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
MD5 d17fe0a3f47be24a6453e9ef58c94641
SHA1 6ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA512 5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82
TLSH
T177A02228CC303B200020C0080A000002C00B800C080C8C0220000A00B20B820002F080
MD5 SHA1 SHA512 TLSH

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memory/1152-30-0x0000000000B00000-0x0000000000B46000-memory.dmp

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memory/1152-22-0x0000000000B00000-0x0000000000B46000-memory.dmp

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memory/1152-31-0x00000000014E0000-0x0000000001504000-memory.dmp

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memory/1152-29-0x0000000000B00000-0x0000000000B46000-memory.dmp

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memory/1152-17-0x0000000000400000-0x0000000000446000-memory.dmp

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memory/1152-20-0x0000000000B00000-0x0000000000B46000-memory.dmp

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memory/1152-25-0x00000000014E0000-0x0000000001504000-memory.dmp

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memory/1152-24-0x0000000000B00000-0x0000000000B46000-memory.dmp

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memory/1152-21-0x0000000001100000-0x000000000144A000-memory.dmp

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memory/2948-35-0x00000170013D0000-0x0000017001484000-memory.dmp

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memory/2948-43-0x00000170013D0000-0x0000017001484000-memory.dmp

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memory/2948-34-0x0000000000860000-0x000000000178C000-memory.dmp

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memory/2948-27-0x0000000000860000-0x000000000178C000-memory.dmp

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memory/3852-28-0x0000000000930000-0x0000000000973000-memory.dmp

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memory/3852-32-0x0000000000930000-0x0000000000973000-memory.dmp

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memory/4780-19-0x00000235780F0000-0x0000023578100000-memory.dmp

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memory/4780-26-0x00000235780F0000-0x0000023578100000-memory.dmp

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memory/4780-23-0x00000235780F0000-0x0000023578100000-memory.dmp

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memory/4780-16-0x00000235780E0000-0x00000235780F2000-memory.dmp

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memory/4780-1-0x00000235780F0000-0x0000023578100000-memory.dmp

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memory/4780-15-0x00000235780F0000-0x0000023578100000-memory.dmp

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memory/4780-14-0x00000235780D0000-0x00000235780D6000-memory.dmp

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memory/4780-13-0x00000235780C0000-0x00000235780D2000-memory.dmp

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memory/4780-18-0x00000235780F0000-0x0000023578100000-memory.dmp

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memory/4780-12-0x00000235780F0000-0x0000023578100000-memory.dmp

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memory/4780-3-0x000002357AB20000-0x000002357AB42000-memory.dmp

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memory/4780-40-0x0000023576320000-0x0000023576332000-memory.dmp

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memory/4780-2-0x00000235780F0000-0x0000023578100000-memory.dmp

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