formbook | 2bec28d8646a16ac1481603d33ebb7ed0f2b0d1ef7ce7fad484c71d720950234

Analysis

max time kernel
298s
max time network
296s
platform
windows11-21h2_x64
resource
win11-20260130-en
resource tags

arch:x64arch:x86image:win11-20260130-enlocale:en-usos:windows11-21h2-x64systemwindows
submitted
18/04/2026, 15:58

Sharing

Copy URL Twitter E-mail

Report Analysis Logs

General

Target
18042026_1558_17042026_20240108-051513-451604_Merge_453720.pdf.js
Size 2.0MB
Sample260418-tekflacx3p
SHA256 2bec28d8646a16ac1481603d33ebb7ed0f2b0d1ef7ce7fad484c71d720950234
MD5 7166bc29581742807549a05101e395e2
SHA1 66c33c1098a28bbcf92d3b29288e118552319c81
SHA512 9fb72ab69b1c4c61a5c28ad13234e0f1d14bb6247a981280afa2763e67745b69c76bbd2cee0ff4aa2948ccd6dc42568d126fc7ba8c81f8360e3f93b22b0606b6
SSDEEP 24576:2YT0oMK58nEg3kUlAicT0G0hLwPGPiqAVR3ruD982b5EWpMFuMT/34yAt5wIsdtz:goPCE3a5wUog912TC2EjgamNj
TLSH
T14DA5021589C42FB8CFEC561890FE160A93F04A8A5517B98EEB73BD57BFE7A04410B19C
MD5 SHA1 SHA512 SSDEEP TLSH

Score

10^/10

adware 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/2316-22-0x0000000000400000-0x0000000000446000-memory.dmp	family_formbook
behavioral2/memory/2316-37-0x0000000000400000-0x0000000000446000-memory.dmp	family_formbook
behavioral2/memory/412-47-0x00000000006B0000-0x00000000006F3000-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	3152	wscript.exe

Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

Run Powershell and hide display window.

execution

PowerShell

T1059.001

pid	Process
3704	powershell.exe

Drops startup file 1 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\SystemUpdate_Zmj3LIq2CqVe_1776527895731.lnk	wscript.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-1-5-21-3847269522-1618051987-1942096715-1000\Software\Microsoft\Windows\CurrentVersion\Run\SystemUpdate_Zmj3LIq2CqVe_1776527895731 = "powershell.exe -ExecutionPolicy Bypass -WindowStyle Hidden -File \"C:\\Temp\\ps_Zmj3LIq2CqVe_1776527895731.ps1\""	wscript.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SystemUpdate_Zmj3LIq2CqVe_1776527895731 = "powershell.exe -ExecutionPolicy Bypass -WindowStyle Hidden -File \"C:\\Temp\\ps_Zmj3LIq2CqVe_1776527895731.ps1\""	wscript.exe

ConfuserEx .NET packer 1 IoCs

Detects ConfuserEx .NET packer.

resource	yara_rule
behavioral2/memory/3704-19-0x000001CE5F240000-0x000001CE5F25A000-memory.dmp	ConfuserEx

Suspicious use of SetThreadContext 12 IoCs

description	pid	Process	procid_target
PID 3704 set thread context of 2316	3704	powershell.exe	90
PID 2316 set thread context of 4192	2316	aspnet_compiler.exe
PID 2316 set thread context of 3152	2316	aspnet_compiler.exe	79
PID 2316 set thread context of 412	2316	aspnet_compiler.exe	91
PID 3704 set thread context of 3880	3704	powershell.exe	92
PID 412 set thread context of 3152	412	PresentationHost.exe	79
PID 3704 set thread context of 2464	3704	powershell.exe	93
PID 3704 set thread context of 2396	3704	powershell.exe	94
PID 3704 set thread context of 4528	3704	powershell.exe	96
PID 412 set thread context of 3328	412	PresentationHost.exe	95
PID 3704 set thread context of 692	3704	powershell.exe	99
PID 412 set thread context of 2172	412	PresentationHost.exe	101

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	PresentationHost.exe

Modifies Internet Explorer settings 1 TTPs 1 IoCs

adware spyware

Modify Registry

T1112

description	ioc	Process
Key created	\Registry\User\S-1-5-21-3847269522-1618051987-1942096715-1000\SOFTWARE\Microsoft\Internet Explorer\IntelliForms\Storage2	PresentationHost.exe

Suspicious behavior: EnumeratesProcesses 52 IoCs

pid	Process
3704	powershell.exe
3704	powershell.exe
4072	powershell.exe
4072	powershell.exe
3704	powershell.exe
3704	powershell.exe
3704	powershell.exe
3704	powershell.exe
3704	powershell.exe
3704	powershell.exe
3704	powershell.exe
3704	powershell.exe
3704	powershell.exe
3704	powershell.exe
3704	powershell.exe
3704	powershell.exe
2316	aspnet_compiler.exe
2316	aspnet_compiler.exe
2316	aspnet_compiler.exe
2316	aspnet_compiler.exe
2316	aspnet_compiler.exe
2316	aspnet_compiler.exe
2316	aspnet_compiler.exe
2316	aspnet_compiler.exe
3704	powershell.exe
2316	aspnet_compiler.exe
2316	aspnet_compiler.exe
3704	powershell.exe
3704	powershell.exe
412	PresentationHost.exe
412	PresentationHost.exe
412	PresentationHost.exe
412	PresentationHost.exe
412	PresentationHost.exe
412	PresentationHost.exe
412	PresentationHost.exe
412	PresentationHost.exe
3704	powershell.exe
3880	aspnet_compiler.exe
3880	aspnet_compiler.exe
3704	powershell.exe
2464	aspnet_compiler.exe
2464	aspnet_compiler.exe
3704	powershell.exe
2396	aspnet_compiler.exe
2396	aspnet_compiler.exe
3704	powershell.exe
4528	aspnet_compiler.exe
4528	aspnet_compiler.exe
3704	powershell.exe
692	aspnet_compiler.exe
692	aspnet_compiler.exe

Suspicious behavior: MapViewOfSection 10 IoCs

pid	Process
2316	aspnet_compiler.exe
2316	aspnet_compiler.exe
3152	wscript.exe
3152	wscript.exe
412	PresentationHost.exe
412	PresentationHost.exe
412	PresentationHost.exe
412	PresentationHost.exe
412	PresentationHost.exe
412	PresentationHost.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	3704	powershell.exe
Token: SeDebugPrivilege	4072	powershell.exe

Suspicious use of WriteProcessMemory 27 IoCs

description	pid	Process	procid_target
PID 3152 wrote to memory of 3704	3152	wscript.exe	80
PID 3704 wrote to memory of 5060	3704	powershell.exe	85
PID 3704 wrote to memory of 3700	3704	powershell.exe	86
PID 3704 wrote to memory of 4048	3704	powershell.exe	87
PID 3704 wrote to memory of 4624	3704	powershell.exe	88
PID 3704 wrote to memory of 4704	3704	powershell.exe	89
PID 3704 wrote to memory of 2316	3704	powershell.exe	90
PID 3704 wrote to memory of 2316	3704	powershell.exe	90
PID 3704 wrote to memory of 2316	3704	powershell.exe	90
PID 3152 wrote to memory of 412	3152	wscript.exe	91
PID 3704 wrote to memory of 3880	3704	powershell.exe	92
PID 3704 wrote to memory of 3880	3704	powershell.exe	92
PID 3704 wrote to memory of 3880	3704	powershell.exe	92
PID 3704 wrote to memory of 2464	3704	powershell.exe	93
PID 3704 wrote to memory of 2464	3704	powershell.exe	93
PID 3704 wrote to memory of 2464	3704	powershell.exe	93
PID 3704 wrote to memory of 2396	3704	powershell.exe	94
PID 3704 wrote to memory of 2396	3704	powershell.exe	94
PID 3704 wrote to memory of 2396	3704	powershell.exe	94
PID 412 wrote to memory of 3328	412	PresentationHost.exe	95
PID 3704 wrote to memory of 4528	3704	powershell.exe	96
PID 3704 wrote to memory of 4528	3704	powershell.exe	96
PID 3704 wrote to memory of 4528	3704	powershell.exe	96
PID 3704 wrote to memory of 692	3704	powershell.exe	99
PID 3704 wrote to memory of 692	3704	powershell.exe	99
PID 3704 wrote to memory of 692	3704	powershell.exe	99
PID 412 wrote to memory of 2172	412	PresentationHost.exe	101

C:\Windows\system32\wscript.exe
wscript.exe C:\Users\Admin\AppData\Local\Temp\18042026_1558_17042026_20240108-051513-451604_Merge_453720.pdf.js
1⤵
- Badlisted process makes network request
- Drops startup file
- Adds Run key to start application
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:3152
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  powershell.exe -ExecutionPolicy Bypass -NoProfile -WindowStyle Hidden -NonInteractive -NoLogo -File "C:\Temp\ps_Zmj3LIq2CqVe_1776527895731.ps1"
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious use of SetThreadContext
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:3704
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe
    "C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe"
    3⤵
    PID:5060
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe
    "C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe"
    3⤵
    PID:3700
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe
    "C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe"
    3⤵
    PID:4048
- - 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:4704
- - 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:2316
- - 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:3880
- - 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:2464
- - 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:2396
- - 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:4528
- - 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:692
- C:\Windows\SysWOW64\PresentationHost.exe
  "C:\Windows\SysWOW64\PresentationHost.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Modifies Internet Explorer settings
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of WriteProcessMemory
  PID:412
- - C:\Program Files\Google\Chrome\Application\chrome.exe
    "C:\Program Files\Google\Chrome\Application\chrome.exe"
    3⤵
    PID:3328
- - C:\Program Files\Mozilla Firefox\Firefox.exe
    "C:\Program Files\Mozilla Firefox\Firefox.exe"
    3⤵
    PID:2172

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:4072

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:4000

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:2192

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

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

ps_Zmj3LIq2CqVe_1776527895731.ps1

Path C:\Temp\ps_Zmj3LIq2CqVe_1776527895731.ps1
Size 1.5MB
SHA256 8b586abbdba8138d16b96ed703b3d87254d31fc724441ac5822a529790ab6e28
MD5 db15bc0d98dc3b6b67fc28e49abd0d13
SHA1 6437f0b778a8d5d588eba0e9a032daad68711392
SHA512 85dea141239691361478ad6b7046da6d67b44390a1fbe428dc765291253198b59aafd54ea4b89450c7a6918b982a374f3862b211b13c80621b39f4642f6d97ab
SSDEEP 24576:LTgSBVYOiZE5kr5PUzhGZsb8iSLSk15GKUfqIuSYY6ks2l:HnUV5ZsbLSLWyF/m
TLSH
T10A6533113F9E1CFE4338B208A59F694867E34B74F05AD9D66AD801E706DE7CA442392F
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

ModuleAnalysisCache

Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\ModuleAnalysisCache
Size 62KB
SHA256 e6d06c37714fc052032aa58f139f4a5d3e920489fc290da5b4717ec0c6a20705
MD5 65c0e4b8b2cf4435dd64a66e7b8e3d80
SHA1 7c44e16bdb81efd05f5fc111da3d7b9abc0e1401
SHA512 b29e84426e5cfdd844e334dcfb9ec57f5713a74266d70cea5cb8caacc98d2a3fb4bac8558173c88e872e359b315fc8886c4680a5a5e562293e5e5d2145ae123f
SSDEEP 1536:LflJdDiFHzdysYLYkzvHgfKQNUpeE711kDa5ljNC+jH0IM5MXYo3Xi3j39MVvjB8:LflJdWFHzdzYLYkzvHgfKQNUpeE711kz
TLSH
T13D537392E9204E75E2A65F3EF15622627D30394690F8113212DC25EFA987D930B1F7FE
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

__PSScriptPolicyTest_pqo2to3r.t3d.ps1

Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_pqo2to3r.t3d.ps1
Size 60B
SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
MD5 d17fe0a3f47be24a6453e9ef58c94641
SHA1 6ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA512 5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82
TLSH
T177A02228CC303B200020C0080A000002C00B800C080C8C0220000A00B20B820002F080
MD5 SHA1 SHA512 TLSH

Submit Download

memory/412-75-0x00000000059D0000-0x0000000005A34000-memory.dmp

Download

memory/412-47-0x00000000006B0000-0x00000000006F3000-memory.dmp

Download

memory/412-43-0x00000000006B0000-0x00000000006F3000-memory.dmp

Download

memory/2172-92-0x000001C6738E0000-0x000001C67398E000-memory.dmp

Download

memory/2192-74-0x00000277FDB30000-0x00000277FDB8D000-memory.dmp

Download

memory/2316-21-0x0000000000400000-0x0000000000446000-memory.dmp

Download

memory/2316-22-0x0000000000400000-0x0000000000446000-memory.dmp

Download

memory/2316-37-0x0000000000400000-0x0000000000446000-memory.dmp

Download

memory/3152-83-0x000001CD1F950000-0x000001CD1F9AD000-memory.dmp

Download

memory/3152-84-0x000001CD1DD50000-0x000001CD1DD5C000-memory.dmp

Download

memory/3152-26-0x000001CD1DD50000-0x000001CD1DD5C000-memory.dmp

Download

memory/3152-25-0x000001CD1F950000-0x000001CD1F9AD000-memory.dmp

Download

memory/3152-82-0x000001CD21630000-0x000001CD216F7000-memory.dmp

Download

memory/3152-49-0x000001CD21630000-0x000001CD216F7000-memory.dmp

Download

memory/3328-72-0x00000258ED630000-0x00000258ED715000-memory.dmp

Download

memory/3704-2-0x000001CE5F150000-0x000001CE5F160000-memory.dmp

Download

memory/3704-28-0x000001CE46AC0000-0x000001CE46ACC000-memory.dmp

Download

memory/3704-3-0x000001CE5F1B0000-0x000001CE5F1D2000-memory.dmp

Download

memory/3704-23-0x000001CE5F150000-0x000001CE5F160000-memory.dmp

Download

memory/3704-27-0x000001CE469E0000-0x000001CE46A3D000-memory.dmp

Download

memory/3704-20-0x000001CE5F1A0000-0x000001CE5F1A6000-memory.dmp

Download

memory/3704-19-0x000001CE5F240000-0x000001CE5F25A000-memory.dmp

Download

memory/3704-24-0x000001CE5F150000-0x000001CE5F160000-memory.dmp

Download

memory/3704-29-0x000001CE5F160000-0x000001CE5F172000-memory.dmp

Download

memory/3704-30-0x000001CE5F150000-0x000001CE5F160000-memory.dmp

Download

memory/3704-10-0x000001CE5F150000-0x000001CE5F160000-memory.dmp

Download

memory/4000-73-0x000001F98E9E0000-0x000001F98EA3D000-memory.dmp

Download

memory/4072-18-0x0000020CFFE60000-0x0000020CFFEA6000-memory.dmp

Download

memory/4072-33-0x0000020C81C90000-0x0000020C81CA2000-memory.dmp

Download

memory/4072-31-0x0000020C81AD0000-0x0000020C81B2D000-memory.dmp

Download

memory/4072-32-0x0000020C81B80000-0x0000020C81B8C000-memory.dmp

Download