formbook | 8f915361682bdb7cc51da3084c9b0368610cc4839697e4d8c2c76f90ec2f5b11

Analysis

max time kernel
298s
max time network
280s
platform
windows11-21h2_x64
resource
win11-20260130-en
resource tags

arch:x64arch:x86image:win11-20260130-enlocale:en-usos:windows11-21h2-x64systemwindows
submitted
11/05/2026, 16:44

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General

Target
OC_Nro. 5700080331.js
Size 3.0MB
Sample260511-t8596aez41
SHA256 8f915361682bdb7cc51da3084c9b0368610cc4839697e4d8c2c76f90ec2f5b11
MD5 31347116bd993f5d5b36d794be57a743
SHA1 e14198b1326c81552f134ecbff7387eec16b5234
SHA512 33a1e4537e7a5a329c851b7f55ebbd60ad79038fb5352dc3bd7cb93772aca34d296b292eef4be87c140e3e7a62b239ab6c8e0f6b1a73d329c2f14ee05b5c7edc
SSDEEP 49152:Qmx6Z8Jg+Imppg5YlrIeulD7XVmLdI4+XSk/t3bri3z0mxeRxp89f8OFDbOmHr73:7
TLSH
T135E55B17D66F9B4D18093B61006A5D9AFE89CAFCEF72BBC4E0CF90B510EA1110B855B7
MD5 SHA1 SHA512 SSDEEP TLSH

Score

10^/10

adware 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/2100-17-0x0000000000E00000-0x0000000000E46000-memory.dmp	family_formbook
behavioral2/memory/2100-20-0x0000000000E00000-0x0000000000E46000-memory.dmp	family_formbook
behavioral2/memory/2100-28-0x0000000000E00000-0x0000000000E46000-memory.dmp	family_formbook
behavioral2/memory/2612-29-0x0000000000F90000-0x0000000000FD3000-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	4532	wscript.exe

Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

Run Powershell and hide display window.

execution

PowerShell

T1059.001

pid	Process
3692	powershell.exe

ConfuserEx .NET packer 3 IoCs

Detects ConfuserEx .NET packer.

resource	yara_rule
behavioral2/memory/3692-12-0x000001F989950000-0x000001F989964000-memory.dmp	ConfuserEx
behavioral2/memory/3692-14-0x000001F9A2210000-0x000001F9A2224000-memory.dmp	ConfuserEx
behavioral2/memory/3692-50-0x000001F9A2260000-0x000001F9A2274000-memory.dmp	ConfuserEx

Enumerates processes with tasklist 1 TTPs 1 IoCs

discovery

Process Discovery

T1057

pid	Process
2612	tasklist.exe

Suspicious use of SetThreadContext 13 IoCs

description	pid	Process	procid_target
PID 3692 set thread context of 2100	3692	powershell.exe	86
PID 2100 set thread context of 4532	2100	aspnet_compiler.exe	78
PID 2100 set thread context of 2612	2100	aspnet_compiler.exe	87
PID 3692 set thread context of 1560	3692	powershell.exe	88
PID 2612 set thread context of 4532	2612	tasklist.exe	78
PID 3692 set thread context of 1948	3692	powershell.exe	89
PID 3692 set thread context of 4320	3692	powershell.exe	90
PID 3692 set thread context of 1876	3692	powershell.exe	92
PID 2612 set thread context of 4808	2612	tasklist.exe	91
PID 3692 set thread context of 1692	3692	powershell.exe	95
PID 3692 set thread context of 2936	3692	powershell.exe	96
PID 3692 set thread context of 828	3692	powershell.exe	98
PID 2612 set thread context of 3664	2612	tasklist.exe	97

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	tasklist.exe

Kills process with taskkill 1 IoCs

defense_evasion

pid	Process
2784	taskkill.exe

Modifies Internet Explorer settings 1 TTPs 1 IoCs

adware spyware

Modify Registry

T1112

description	ioc	Process
Key created	\Registry\User\S-1-5-21-3119821332-640943685-2562343641-1000\SOFTWARE\Microsoft\Internet Explorer\IntelliForms\Storage2	tasklist.exe

Suspicious behavior: EnumeratesProcesses 37 IoCs

pid	Process
3692	powershell.exe
3692	powershell.exe
3692	powershell.exe
3692	powershell.exe
3692	powershell.exe
3692	powershell.exe
3692	powershell.exe
3692	powershell.exe
3692	powershell.exe
3692	powershell.exe
3692	powershell.exe
3692	powershell.exe
3692	powershell.exe
3692	powershell.exe
2100	aspnet_compiler.exe
2100	aspnet_compiler.exe
2100	aspnet_compiler.exe
2100	aspnet_compiler.exe
3692	powershell.exe
2612	tasklist.exe
2612	tasklist.exe
2612	tasklist.exe
2612	tasklist.exe
3692	powershell.exe
1560	aspnet_compiler.exe
3692	powershell.exe
1948	aspnet_compiler.exe
3692	powershell.exe
4320	aspnet_compiler.exe
3692	powershell.exe
1876	aspnet_compiler.exe
3692	powershell.exe
1692	aspnet_compiler.exe
3692	powershell.exe
2936	aspnet_compiler.exe
3692	powershell.exe
828	aspnet_compiler.exe

Suspicious behavior: MapViewOfSection 9 IoCs

pid	Process
2100	aspnet_compiler.exe
4532	wscript.exe
4532	wscript.exe
2612	tasklist.exe
2612	tasklist.exe
2612	tasklist.exe
2612	tasklist.exe
2612	tasklist.exe
2612	tasklist.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	3692	powershell.exe
Token: SeDebugPrivilege	2784	taskkill.exe

Suspicious use of WriteProcessMemory 34 IoCs

description	pid	Process	procid_target
PID 4532 wrote to memory of 3692	4532	wscript.exe	79
PID 3692 wrote to memory of 4268	3692	powershell.exe	81
PID 3692 wrote to memory of 1528	3692	powershell.exe	82
PID 3692 wrote to memory of 2228	3692	powershell.exe	83
PID 3692 wrote to memory of 1172	3692	powershell.exe	84
PID 3692 wrote to memory of 2448	3692	powershell.exe	85
PID 3692 wrote to memory of 2100	3692	powershell.exe	86
PID 3692 wrote to memory of 2100	3692	powershell.exe	86
PID 3692 wrote to memory of 2100	3692	powershell.exe	86
PID 4532 wrote to memory of 2612	4532	wscript.exe	87
PID 3692 wrote to memory of 1560	3692	powershell.exe	88
PID 3692 wrote to memory of 1560	3692	powershell.exe	88
PID 3692 wrote to memory of 1560	3692	powershell.exe	88
PID 3692 wrote to memory of 1948	3692	powershell.exe	89
PID 3692 wrote to memory of 1948	3692	powershell.exe	89
PID 3692 wrote to memory of 1948	3692	powershell.exe	89
PID 3692 wrote to memory of 4320	3692	powershell.exe	90
PID 3692 wrote to memory of 4320	3692	powershell.exe	90
PID 3692 wrote to memory of 4320	3692	powershell.exe	90
PID 2612 wrote to memory of 4808	2612	tasklist.exe	91
PID 3692 wrote to memory of 1876	3692	powershell.exe	92
PID 3692 wrote to memory of 1876	3692	powershell.exe	92
PID 3692 wrote to memory of 1876	3692	powershell.exe	92
PID 3692 wrote to memory of 1692	3692	powershell.exe	95
PID 3692 wrote to memory of 1692	3692	powershell.exe	95
PID 3692 wrote to memory of 1692	3692	powershell.exe	95
PID 3692 wrote to memory of 2936	3692	powershell.exe	96
PID 3692 wrote to memory of 2936	3692	powershell.exe	96
PID 3692 wrote to memory of 2936	3692	powershell.exe	96
PID 2612 wrote to memory of 3664	2612	tasklist.exe	97
PID 3692 wrote to memory of 828	3692	powershell.exe	98
PID 3692 wrote to memory of 828	3692	powershell.exe	98
PID 3692 wrote to memory of 828	3692	powershell.exe	98
PID 4532 wrote to memory of 2784	4532	wscript.exe	100

C:\Windows\system32\wscript.exe
wscript.exe "C:\Users\Admin\AppData\Local\Temp\OC_Nro. 5700080331.js"
1⤵
- Badlisted process makes network request
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:4532
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  powershell.exe -ExecutionPolicy Bypass -NoProfile -WindowStyle Hidden -File "C:\Temp\ps_TMR5oGaz0qgS_1778517886194.ps1"
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious use of SetThreadContext
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:3692
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe
    "C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe"
    3⤵
    PID:4268
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe
    "C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe"
    3⤵
    PID:1528
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe
    "C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe"
    3⤵
    PID:2228
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe
    "C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe"
    3⤵
    PID:1172
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe
    "C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe"
    3⤵
    PID:2448
- - 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:2100
- - 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:1560
- - 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:1948
- - 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:4320
- - 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:1876
- - 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:1692
- - 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:2936
- - 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:828
- C:\Windows\SysWOW64\tasklist.exe
  "C:\Windows\SysWOW64\tasklist.exe"
  2⤵
  - Enumerates processes with tasklist
  - 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:2612
- - C:\Program Files\Google\Chrome\Application\chrome.exe
    "C:\Program Files\Google\Chrome\Application\chrome.exe"
    3⤵
    PID:4808
- - C:\Program Files\Mozilla Firefox\Firefox.exe
    "C:\Program Files\Mozilla Firefox\Firefox.exe"
    3⤵
    PID:3664
- C:\Windows\System32\taskkill.exe
  "C:\Windows\System32\taskkill.exe" /f /im wscript.exe
  2⤵
  - Kills process with taskkill
  - Suspicious use of AdjustPrivilegeToken
  PID:2784

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:4764

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:3360

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

Process Discovery

T1057

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_TMR5oGaz0qgS_1778517886194.ps1

Path C:\Temp\ps_TMR5oGaz0qgS_1778517886194.ps1
Size 2.2MB
SHA256 7d7af8f568f06dc810170b8660df790a648f7d078d56cf2c3e631b957c74b314
MD5 aa2cb6b3e0ece86896e01d795e329bbf
SHA1 7c787e08dc54b9aefa5e16fceed9e84077be0aa3
SHA512 4c56a3f052525bb6ff17584fa0abaf0f3fdf225facd6d0b8285456fb411518ccde536ff51f4e39818445b93624e2ff0b9bcb22fabdd9b543c653ba70acba47a8
SSDEEP 24576:DX4DfKquxf64NTyO8gtKlRGAFQgUnljzEgNQGhUWeZFeJVwNHTEb/VCbFX+5E:O
TLSH
T141A5BFCAD16E44D29C053FC9A8142AC78B2587328B740068366FBD498F775FEC15EEE6
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

__PSScriptPolicyTest_5neujlot.dd5.ps1

Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_5neujlot.dd5.ps1
Size 60B
SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
MD5 d17fe0a3f47be24a6453e9ef58c94641
SHA1 6ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA512 5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82
TLSH
T177A02228CC303B200020C0080A000002C00B800C080C8C0220000A00B20B820002F080
MD5 SHA1 SHA512 TLSH

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memory/2100-28-0x0000000000E00000-0x0000000000E46000-memory.dmp

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memory/2100-17-0x0000000000E00000-0x0000000000E46000-memory.dmp

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memory/2100-19-0x00000000011D0000-0x0000000001526000-memory.dmp

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memory/2100-20-0x0000000000E00000-0x0000000000E46000-memory.dmp

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memory/2100-15-0x0000000000400000-0x0000000000446000-memory.dmp

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memory/2612-29-0x0000000000F90000-0x0000000000FD3000-memory.dmp

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memory/2612-26-0x0000000000F90000-0x0000000000FD3000-memory.dmp

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memory/3664-59-0x000001A6BB740000-0x000001A6BB80C000-memory.dmp

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memory/3692-50-0x000001F9A2260000-0x000001F9A2274000-memory.dmp

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memory/3692-25-0x000001F9898F0000-0x000001F989902000-memory.dmp

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memory/3692-18-0x000001F9A1FA0000-0x000001F9A1FB0000-memory.dmp

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memory/3692-10-0x000001F9A1FA0000-0x000001F9A1FB0000-memory.dmp

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memory/3692-5-0x000001F989970000-0x000001F989992000-memory.dmp

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memory/3692-14-0x000001F9A2210000-0x000001F9A2224000-memory.dmp

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memory/3692-13-0x000001F9899C0000-0x000001F9899C6000-memory.dmp

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memory/3692-21-0x000001F9A1FA0000-0x000001F9A1FB0000-memory.dmp

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memory/3692-24-0x000001F9880A0000-0x000001F9880AC000-memory.dmp

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memory/3692-16-0x000001F9A1FA0000-0x000001F9A1FB0000-memory.dmp

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memory/3692-12-0x000001F989950000-0x000001F989964000-memory.dmp

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memory/3692-1-0x000001F9A1FA0000-0x000001F9A1FB0000-memory.dmp

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memory/3692-2-0x000001F9A1FA0000-0x000001F9A1FB0000-memory.dmp

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memory/4532-31-0x0000000000360000-0x0000000002B20000-memory.dmp

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memory/4532-33-0x00000206D7D80000-0x00000206D7E46000-memory.dmp

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memory/4532-23-0x00000206D4FB0000-0x00000206D4FBC000-memory.dmp

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memory/4532-22-0x0000000000360000-0x0000000002B20000-memory.dmp

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memory/4532-60-0x00000206D7D80000-0x00000206D7E46000-memory.dmp

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memory/4808-45-0x0000021128A90000-0x0000021128B48000-memory.dmp

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