formbook | a541b7ffad0c788b1b80d8476339627980d5d4142ffb4d3b8a89b90beb0e95ea

Analysis

max time kernel
149s
max time network
134s
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, 12:29

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General

Target
tmp3vt3oqo0.js
Size 2.0MB
Sample260602-pn69haev2r
SHA256 a541b7ffad0c788b1b80d8476339627980d5d4142ffb4d3b8a89b90beb0e95ea
MD5 47a750d084284a01ba7ad138ef8c6f16
SHA1 b65b6dd6b6f5962334bda884af8ccffc400ac6be
SHA512 b8bb904d2ecdbbdda302452b227bdf07633a442ccfbea8d7df2d074b2275b4804ed4a5657973e88c0cbf15c949fdbd7437440b03595bd89b0c605a1d219032f5
SSDEEP 24576:b3Iy7MYu8Bv5mfDQoHKfc+EZKGvmAGM8tT54wQp7udJ+4XQ6NYiewcFE1DC7Cqjm:bYCucm8oIcxHGJTk4XjKBby1Dacum
TLSH
T120A5025689C43FA9CFE85A1D40FE1A0E63F04A8B445AB54AFF33BD4BBFA76004117199
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
behavioral3/memory/1072-14-0x0000000000D50000-0x0000000000D96000-memory.dmp	family_formbook
behavioral3/memory/1072-18-0x0000000000D50000-0x0000000000D96000-memory.dmp	family_formbook
behavioral3/memory/1072-22-0x0000000000D50000-0x0000000000D96000-memory.dmp	family_formbook
behavioral3/memory/444-23-0x0000000000490000-0x00000000004D3000-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	1892	wscript.exe

Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

Run Powershell and hide display window.

execution

PowerShell

T1059.001

pid	Process
2972	powershell.exe

ConfuserEx .NET packer 1 IoCs

Detects ConfuserEx .NET packer.

resource	yara_rule
behavioral3/memory/2972-11-0x000002DDFD280000-0x000002DDFD29A000-memory.dmp	ConfuserEx

Suspicious use of SetThreadContext 11 IoCs

description	pid	Process	procid_target
PID 2972 set thread context of 1072	2972	powershell.exe	87
PID 1072 set thread context of 1892	1072	aspnet_compiler.exe	79
PID 1072 set thread context of 444	1072	aspnet_compiler.exe	88
PID 2972 set thread context of 3656	2972	powershell.exe	90
PID 444 set thread context of 1892	444	timeout.exe	79
PID 2972 set thread context of 1308	2972	powershell.exe	92
PID 2972 set thread context of 4840	2972	powershell.exe	94
PID 2972 set thread context of 5028	2972	powershell.exe	97
PID 2972 set thread context of 2168	2972	powershell.exe	99
PID 2972 set thread context of 492	2972	powershell.exe	100
PID 2972 set thread context of 1180	2972	powershell.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	timeout.exe

Delays execution with timeout.exe 1 IoCs

defense_evasion

pid	Process
444	timeout.exe

Kills process with taskkill 1 IoCs

defense_evasion

pid	Process
1668	taskkill.exe

Suspicious behavior: EnumeratesProcesses 49 IoCs

pid	Process
2972	powershell.exe
2972	powershell.exe
2972	powershell.exe
2972	powershell.exe
2972	powershell.exe
2972	powershell.exe
2972	powershell.exe
2972	powershell.exe
2972	powershell.exe
2972	powershell.exe
2972	powershell.exe
2972	powershell.exe
2972	powershell.exe
2972	powershell.exe
1072	aspnet_compiler.exe
1072	aspnet_compiler.exe
1072	aspnet_compiler.exe
1072	aspnet_compiler.exe
2972	powershell.exe
444	timeout.exe
444	timeout.exe
444	timeout.exe
444	timeout.exe
2972	powershell.exe
2972	powershell.exe
2972	powershell.exe
3656	aspnet_compiler.exe
2972	powershell.exe
2972	powershell.exe
2972	powershell.exe
1308	aspnet_compiler.exe
2972	powershell.exe
2972	powershell.exe
2972	powershell.exe
4840	aspnet_compiler.exe
2972	powershell.exe
2972	powershell.exe
2972	powershell.exe
2972	powershell.exe
2972	powershell.exe
5028	aspnet_compiler.exe
2972	powershell.exe
2972	powershell.exe
2972	powershell.exe
2168	aspnet_compiler.exe
2972	powershell.exe
492	aspnet_compiler.exe
2972	powershell.exe
1180	aspnet_compiler.exe

Suspicious behavior: MapViewOfSection 5 IoCs

pid	Process
1072	aspnet_compiler.exe
1892	wscript.exe
1892	wscript.exe
444	timeout.exe
444	timeout.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2972	powershell.exe
Token: SeDebugPrivilege	1668	taskkill.exe

Suspicious use of WriteProcessMemory 38 IoCs

description	pid	Process	procid_target
PID 1892 wrote to memory of 2972	1892	wscript.exe	80
PID 2972 wrote to memory of 1896	2972	powershell.exe	82
PID 2972 wrote to memory of 1192	2972	powershell.exe	83
PID 2972 wrote to memory of 3052	2972	powershell.exe	84
PID 2972 wrote to memory of 4436	2972	powershell.exe	85
PID 2972 wrote to memory of 1572	2972	powershell.exe	86
PID 2972 wrote to memory of 1072	2972	powershell.exe	87
PID 2972 wrote to memory of 1072	2972	powershell.exe	87
PID 2972 wrote to memory of 1072	2972	powershell.exe	87
PID 1892 wrote to memory of 444	1892	wscript.exe	88
PID 2972 wrote to memory of 2656	2972	powershell.exe	89
PID 2972 wrote to memory of 3656	2972	powershell.exe	90
PID 2972 wrote to memory of 3656	2972	powershell.exe	90
PID 2972 wrote to memory of 3656	2972	powershell.exe	90
PID 2972 wrote to memory of 4044	2972	powershell.exe	91
PID 2972 wrote to memory of 1308	2972	powershell.exe	92
PID 2972 wrote to memory of 1308	2972	powershell.exe	92
PID 2972 wrote to memory of 1308	2972	powershell.exe	92
PID 2972 wrote to memory of 1992	2972	powershell.exe	93
PID 2972 wrote to memory of 4840	2972	powershell.exe	94
PID 2972 wrote to memory of 4840	2972	powershell.exe	94
PID 2972 wrote to memory of 4840	2972	powershell.exe	94
PID 2972 wrote to memory of 576	2972	powershell.exe	95
PID 2972 wrote to memory of 1100	2972	powershell.exe	96
PID 2972 wrote to memory of 5028	2972	powershell.exe	97
PID 2972 wrote to memory of 5028	2972	powershell.exe	97
PID 2972 wrote to memory of 5028	2972	powershell.exe	97
PID 2972 wrote to memory of 4540	2972	powershell.exe	98
PID 2972 wrote to memory of 2168	2972	powershell.exe	99
PID 2972 wrote to memory of 2168	2972	powershell.exe	99
PID 2972 wrote to memory of 2168	2972	powershell.exe	99
PID 2972 wrote to memory of 492	2972	powershell.exe	100
PID 2972 wrote to memory of 492	2972	powershell.exe	100
PID 2972 wrote to memory of 492	2972	powershell.exe	100
PID 2972 wrote to memory of 1180	2972	powershell.exe	101
PID 2972 wrote to memory of 1180	2972	powershell.exe	101
PID 2972 wrote to memory of 1180	2972	powershell.exe	101
PID 1892 wrote to memory of 1668	1892	wscript.exe	103

C:\Windows\system32\wscript.exe
wscript.exe C:\Users\Admin\AppData\Local\Temp\tmp3vt3oqo0.js
1⤵
- Badlisted process makes network request
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:1892
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  powershell.exe -ExecutionPolicy Bypass -NoProfile -WindowStyle Hidden -File "C:\Temp\ps_X0t0I3vYgoxE_1780403383219.ps1"
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious use of SetThreadContext
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2972
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe
    "C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe"
    3⤵
    PID:1896
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe
    "C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe"
    3⤵
    PID:1192
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe
    "C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe"
    3⤵
    PID:3052
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe
    "C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe"
    3⤵
    PID:4436
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe
    "C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe"
    3⤵
    PID:1572
- - 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:1072
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe
    "C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe"
    3⤵
    PID:2656
- - 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:3656
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe
    "C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe"
    3⤵
    PID:4044
- - 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:1308
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe
    "C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe"
    3⤵
    PID:1992
- - 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:4840
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe
    "C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe"
    3⤵
    PID:576
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe
    "C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe"
    3⤵
    PID:1100
- - 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:5028
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe
    "C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe"
    3⤵
    PID:4540
- - 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:2168
- - 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:492
- - 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:1180
- C:\Windows\SysWOW64\timeout.exe
  "C:\Windows\SysWOW64\timeout.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Delays execution with timeout.exe
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: MapViewOfSection
  PID:444
- C:\Windows\System32\taskkill.exe
  "C:\Windows\System32\taskkill.exe" /f /im wscript.exe
  2⤵
  - Kills process with taskkill
  - Suspicious use of AdjustPrivilegeToken
  PID:1668

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

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

ps_X0t0I3vYgoxE_1780403383219.ps1

Path C:\Temp\ps_X0t0I3vYgoxE_1780403383219.ps1
Size 1.5MB
SHA256 6f52da3fdfb1e1500b18955235c8ffae291872f10071236671419ebd7db7baa0
MD5 510dba9a84e72004f4ca4c34efe0875e
SHA1 64788c302fc784998801ac832864fdfc9f94014e
SHA512 af2bd8554ede661e5dd60878ec3838cae749543af451de95e64a6d37868d1691dabcd44612012401b192c550839ef405a86f893779cce46ed48b565e892fe1d7
SSDEEP 24576:t8kzwY4Ylbc2CUXI4Wl9a2fcd4Hrwjpmyeh1PikX+DRb2K0bgCBj1PQSPaBdUtb1:t8ilhSDvNrwwQPlb2agjYB0gg
TLSH
T10B6523317EEBFDFA2440561CA1BEFE7952E37BF2A02D9093C0B15087048D79A8616677
MD5 SHA1 SHA512 SSDEEP TLSH

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__PSScriptPolicyTest_xp21xal3.n1x.ps1

Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_xp21xal3.n1x.ps1
Size 60B
SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
MD5 d17fe0a3f47be24a6453e9ef58c94641
SHA1 6ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA512 5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82
TLSH
T177A02228CC303B200020C0080A000002C00B800C080C8C0220000A00B20B820002F080
MD5 SHA1 SHA512 TLSH

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memory/444-20-0x0000000000490000-0x00000000004D3000-memory.dmp

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memory/444-23-0x0000000000490000-0x00000000004D3000-memory.dmp

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memory/1072-14-0x0000000000D50000-0x0000000000D96000-memory.dmp

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memory/1072-13-0x0000000000400000-0x0000000000446000-memory.dmp

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memory/1072-22-0x0000000000D50000-0x0000000000D96000-memory.dmp

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memory/1072-17-0x0000000001120000-0x0000000001476000-memory.dmp

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memory/1072-18-0x0000000000D50000-0x0000000000D96000-memory.dmp

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memory/1892-25-0x00000000004D0000-0x0000000002038000-memory.dmp

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memory/1892-26-0x000002665DE30000-0x000002665DF46000-memory.dmp

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memory/1892-19-0x00000000004D0000-0x0000000002038000-memory.dmp

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memory/1892-33-0x000002665DE30000-0x000002665DF46000-memory.dmp

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memory/2972-11-0x000002DDFD280000-0x000002DDFD29A000-memory.dmp

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memory/2972-16-0x000002DDE1F30000-0x000002DDE1F40000-memory.dmp

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memory/2972-15-0x000002DDE1F30000-0x000002DDE1F40000-memory.dmp

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memory/2972-12-0x000002DDFD2A0000-0x000002DDFD2A6000-memory.dmp

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memory/2972-1-0x000002DDE1F30000-0x000002DDE1F40000-memory.dmp

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memory/2972-9-0x000002DDE1F30000-0x000002DDE1F40000-memory.dmp

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memory/2972-7-0x000002DDFCFF0000-0x000002DDFD012000-memory.dmp

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