formbook | 6364b2acf15d6f8c5c49ceaa93d6c4e22e71c428cf828c0e27b9b5fdbb5dbdfb

Analysis

max time kernel
149s
max time network
150s
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, 13:02

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General

Target
tmpi3xsu_hx.js
Size 1.9MB
Sample260602-p9tkjaez7k
SHA256 6364b2acf15d6f8c5c49ceaa93d6c4e22e71c428cf828c0e27b9b5fdbb5dbdfb
MD5 3c2aa1acc6bcc565ed2909391a2d19f5
SHA1 b44ef01ceb32ff03a2a2faa79f7a06cb9eb7e4e5
SHA512 7a22467710351e40f71889efb74389cb4775e14df0d9c5215afb2e51067f6f62daf142ac9179486223f7b05ee09f968c9112d3fcd23ba5c02f36f6565c339a2e
SSDEEP 24576:kTNXJ0+k2rN8qU64Qkl76I8vtV8mIIM6JZIBimv90R9GDlTuuhjp9BRfxdopcwLg:kRXGiTUekrqPcIM/ilrY9p/50cqy4k
TLSH
T1D395D1140C8AAF5D535DE40BD0BF2F57A3F1A9DE1673AB413B339652F261A0097E12E8
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 6 IoCs

rat

resource	yara_rule
behavioral2/memory/1796-19-0x00000000010E0000-0x0000000001126000-memory.dmp	family_formbook
behavioral2/memory/1796-23-0x00000000010E0000-0x0000000001126000-memory.dmp	family_formbook
behavioral2/memory/1796-21-0x00000000010E0000-0x0000000001126000-memory.dmp	family_formbook
behavioral2/memory/1796-30-0x00000000010E0000-0x0000000001126000-memory.dmp	family_formbook
behavioral2/memory/5024-31-0x0000000001010000-0x0000000001053000-memory.dmp	family_formbook
behavioral2/memory/5024-36-0x0000000001010000-0x0000000001053000-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
37	1780	wscript.exe

Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

Run Powershell and hide display window.

execution

PowerShell

T1059.001

pid	Process
1388	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-1-5-21-876885714-46325919-1482798410-1000\Control Panel\International\Geo\Nation	wscript.exe

Suspicious use of SetThreadContext 11 IoCs

description	pid	Process	procid_target
PID 1388 set thread context of 1796	1388	powershell.exe	103
PID 1796 set thread context of 1780	1796	MsBuild.exe	85
PID 1796 set thread context of 5024	1796	MsBuild.exe	106
PID 1388 set thread context of 3100	1388	powershell.exe	107
PID 5024 set thread context of 1780	5024	cipher.exe	85
PID 1388 set thread context of 3300	1388	powershell.exe	108
PID 1388 set thread context of 4988	1388	powershell.exe	109
PID 1388 set thread context of 5104	1388	powershell.exe	114
PID 1388 set thread context of 4788	1388	powershell.exe	115
PID 1388 set thread context of 1284	1388	powershell.exe	116
PID 1388 set thread context of 2508	1388	powershell.exe	118

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	cipher.exe

Kills process with taskkill 1 IoCs

defense_evasion

pid	Process
4864	taskkill.exe

Suspicious behavior: EnumeratesProcesses 46 IoCs

pid	Process
1388	powershell.exe
1388	powershell.exe
1388	powershell.exe
1388	powershell.exe
1388	powershell.exe
1388	powershell.exe
1388	powershell.exe
1388	powershell.exe
1388	powershell.exe
1388	powershell.exe
1388	powershell.exe
1388	powershell.exe
1388	powershell.exe
1388	powershell.exe
1388	powershell.exe
1796	MsBuild.exe
1796	MsBuild.exe
1796	MsBuild.exe
1796	MsBuild.exe
1388	powershell.exe
5024	cipher.exe
5024	cipher.exe
5024	cipher.exe
5024	cipher.exe
1388	powershell.exe
3100	MsBuild.exe
1388	powershell.exe
3300	MsBuild.exe
1388	powershell.exe
4988	MsBuild.exe
1388	powershell.exe
1388	powershell.exe
1388	powershell.exe
1388	powershell.exe
1388	powershell.exe
1388	powershell.exe
1388	powershell.exe
5104	MsBuild.exe
1388	powershell.exe
4788	MsBuild.exe
1388	powershell.exe
1284	MsBuild.exe
1388	powershell.exe
1388	powershell.exe
1388	powershell.exe
2508	MsBuild.exe

Suspicious behavior: MapViewOfSection 5 IoCs

pid	Process
1796	MsBuild.exe
1780	wscript.exe
1780	wscript.exe
5024	cipher.exe
5024	cipher.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1388	powershell.exe
Token: SeDebugPrivilege	4864	taskkill.exe

Suspicious use of WriteProcessMemory 36 IoCs

description	pid	Process	procid_target
PID 1780 wrote to memory of 1388	1780	wscript.exe	86
PID 1388 wrote to memory of 3084	1388	powershell.exe	94
PID 1388 wrote to memory of 2116	1388	powershell.exe	95
PID 1388 wrote to memory of 4396	1388	powershell.exe	96
PID 1388 wrote to memory of 3856	1388	powershell.exe	97
PID 1388 wrote to memory of 2804	1388	powershell.exe	98
PID 1388 wrote to memory of 1796	1388	powershell.exe	103
PID 1388 wrote to memory of 1796	1388	powershell.exe	103
PID 1388 wrote to memory of 1796	1388	powershell.exe	103
PID 1780 wrote to memory of 5024	1780	wscript.exe	106
PID 1388 wrote to memory of 3100	1388	powershell.exe	107
PID 1388 wrote to memory of 3100	1388	powershell.exe	107
PID 1388 wrote to memory of 3100	1388	powershell.exe	107
PID 1388 wrote to memory of 3300	1388	powershell.exe	108
PID 1388 wrote to memory of 3300	1388	powershell.exe	108
PID 1388 wrote to memory of 3300	1388	powershell.exe	108
PID 1388 wrote to memory of 4988	1388	powershell.exe	109
PID 1388 wrote to memory of 4988	1388	powershell.exe	109
PID 1388 wrote to memory of 4988	1388	powershell.exe	109
PID 1388 wrote to memory of 4092	1388	powershell.exe	111
PID 1388 wrote to memory of 4916	1388	powershell.exe	112
PID 1388 wrote to memory of 4184	1388	powershell.exe	113
PID 1388 wrote to memory of 5104	1388	powershell.exe	114
PID 1388 wrote to memory of 5104	1388	powershell.exe	114
PID 1388 wrote to memory of 5104	1388	powershell.exe	114
PID 1388 wrote to memory of 4788	1388	powershell.exe	115
PID 1388 wrote to memory of 4788	1388	powershell.exe	115
PID 1388 wrote to memory of 4788	1388	powershell.exe	115
PID 1388 wrote to memory of 1284	1388	powershell.exe	116
PID 1388 wrote to memory of 1284	1388	powershell.exe	116
PID 1388 wrote to memory of 1284	1388	powershell.exe	116
PID 1388 wrote to memory of 1264	1388	powershell.exe	117
PID 1388 wrote to memory of 2508	1388	powershell.exe	118
PID 1388 wrote to memory of 2508	1388	powershell.exe	118
PID 1388 wrote to memory of 2508	1388	powershell.exe	118
PID 1780 wrote to memory of 4864	1780	wscript.exe	120

C:\Windows\system32\wscript.exe
wscript.exe C:\Users\Admin\AppData\Local\Temp\tmpi3xsu_hx.js
1⤵
- Badlisted process makes network request
- Checks computer location settings
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:1780
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  powershell.exe -ExecutionPolicy Bypass -NoProfile -WindowStyle Hidden -File "C:\Temp\ps_tVyO4pX3Snea_1780405332052.ps1"
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious use of SetThreadContext
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:1388
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\MsBuild.exe
    "C:\Windows\Microsoft.NET\Framework\v4.0.30319\MsBuild.exe"
    3⤵
    PID:3084
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\MsBuild.exe
    "C:\Windows\Microsoft.NET\Framework\v4.0.30319\MsBuild.exe"
    3⤵
    PID:2116
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\MsBuild.exe
    "C:\Windows\Microsoft.NET\Framework\v4.0.30319\MsBuild.exe"
    3⤵
    PID:4396
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\MsBuild.exe
    "C:\Windows\Microsoft.NET\Framework\v4.0.30319\MsBuild.exe"
    3⤵
    PID:3856
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\MsBuild.exe
    "C:\Windows\Microsoft.NET\Framework\v4.0.30319\MsBuild.exe"
    3⤵
    PID:2804
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\MsBuild.exe
    "C:\Windows\Microsoft.NET\Framework\v4.0.30319\MsBuild.exe"
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious behavior: MapViewOfSection
    PID:1796
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\MsBuild.exe
    "C:\Windows\Microsoft.NET\Framework\v4.0.30319\MsBuild.exe"
    3⤵
    - Suspicious behavior: EnumeratesProcesses
    PID:3100
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\MsBuild.exe
    "C:\Windows\Microsoft.NET\Framework\v4.0.30319\MsBuild.exe"
    3⤵
    - Suspicious behavior: EnumeratesProcesses
    PID:3300
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\MsBuild.exe
    "C:\Windows\Microsoft.NET\Framework\v4.0.30319\MsBuild.exe"
    3⤵
    - Suspicious behavior: EnumeratesProcesses
    PID:4988
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\MsBuild.exe
    "C:\Windows\Microsoft.NET\Framework\v4.0.30319\MsBuild.exe"
    3⤵
    PID:4092
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\MsBuild.exe
    "C:\Windows\Microsoft.NET\Framework\v4.0.30319\MsBuild.exe"
    3⤵
    PID:4916
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\MsBuild.exe
    "C:\Windows\Microsoft.NET\Framework\v4.0.30319\MsBuild.exe"
    3⤵
    PID:4184
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\MsBuild.exe
    "C:\Windows\Microsoft.NET\Framework\v4.0.30319\MsBuild.exe"
    3⤵
    - Suspicious behavior: EnumeratesProcesses
    PID:5104
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\MsBuild.exe
    "C:\Windows\Microsoft.NET\Framework\v4.0.30319\MsBuild.exe"
    3⤵
    - Suspicious behavior: EnumeratesProcesses
    PID:4788
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\MsBuild.exe
    "C:\Windows\Microsoft.NET\Framework\v4.0.30319\MsBuild.exe"
    3⤵
    - Suspicious behavior: EnumeratesProcesses
    PID:1284
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\MsBuild.exe
    "C:\Windows\Microsoft.NET\Framework\v4.0.30319\MsBuild.exe"
    3⤵
    PID:1264
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\MsBuild.exe
    "C:\Windows\Microsoft.NET\Framework\v4.0.30319\MsBuild.exe"
    3⤵
    - Suspicious behavior: EnumeratesProcesses
    PID:2508
- C:\Windows\SysWOW64\cipher.exe
  "C:\Windows\SysWOW64\cipher.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: MapViewOfSection
  PID:5024
- C:\Windows\System32\taskkill.exe
  "C:\Windows\System32\taskkill.exe" /f /im wscript.exe
  2⤵
  - Kills process with taskkill
  - Suspicious use of AdjustPrivilegeToken
  PID:4864

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

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Downloads

ps_tVyO4pX3Snea_1780405332052.ps1

Path C:\Temp\ps_tVyO4pX3Snea_1780405332052.ps1
Size 1.4MB
SHA256 7e44fa6e07c0ed4e85cbc36f848fb61b374884523cd56c2cf00c28ad93b61cb8
MD5 3c3898223e41b5234a449d9575548533
SHA1 28aef4a0e356f215d1cef32f79be812f681dd290
SHA512 eaadce0ed0edb5240de2c27b811191eba2dd6da357d6470ed3376ce62ec8af2d1d0e51aa26fa72a09d39849bf87a62515612c11d0d98f082dc7d22cd998f0b5c
SSDEEP 24576:SzbLwzoe1L1GDrP3PoikMJYk8LlE4N9Xt:SG14DbrkG1vM
TLSH
T1EC659DF97CD27C20E9405398F5B511FA0C96AA982EFD72853706F387A8DA92DD050CF9
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

__PSScriptPolicyTest_3ctubuxs.dre.ps1

Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_3ctubuxs.dre.ps1
Size 60B
SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
MD5 d17fe0a3f47be24a6453e9ef58c94641
SHA1 6ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA512 5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82
TLSH
T177A02228CC303B200020C0080A000002C00B800C080C8C0220000A00B20B820002F080
MD5 SHA1 SHA512 TLSH

Submit Download

memory/1388-15-0x0000025956BD0000-0x0000025956BE6000-memory.dmp

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memory/1388-18-0x0000025956C20000-0x0000025956C30000-memory.dmp

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memory/1388-2-0x0000025956C20000-0x0000025956C30000-memory.dmp

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memory/1388-12-0x0000025956C20000-0x0000025956C30000-memory.dmp

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memory/1388-13-0x000002593E770000-0x000002593E786000-memory.dmp

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memory/1388-14-0x0000025956C20000-0x0000025956C30000-memory.dmp

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memory/1388-22-0x0000025956C20000-0x0000025956C30000-memory.dmp

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memory/1388-33-0x0000025956BE0000-0x0000025956BF6000-memory.dmp

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memory/1388-38-0x0000025956C10000-0x0000025956C26000-memory.dmp

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memory/1388-10-0x0000025956B40000-0x0000025956B62000-memory.dmp

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memory/1388-17-0x0000025956C20000-0x0000025956C30000-memory.dmp

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memory/1388-24-0x0000025956C20000-0x0000025956C30000-memory.dmp

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memory/1388-1-0x0000025956C20000-0x0000025956C30000-memory.dmp

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memory/1780-35-0x0000023D9A250000-0x0000023D9A330000-memory.dmp

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memory/1780-44-0x0000023D9A250000-0x0000023D9A330000-memory.dmp

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memory/1780-32-0x00000000008C0000-0x000000000147F000-memory.dmp

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memory/1780-26-0x00000000008C0000-0x000000000147F000-memory.dmp

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memory/1796-23-0x00000000010E0000-0x0000000001126000-memory.dmp

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memory/1796-28-0x00000000010E0000-0x0000000001126000-memory.dmp

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memory/1796-30-0x00000000010E0000-0x0000000001126000-memory.dmp

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memory/1796-21-0x00000000010E0000-0x0000000001126000-memory.dmp

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memory/1796-25-0x0000000001A00000-0x0000000001A21000-memory.dmp

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memory/1796-20-0x0000000001640000-0x000000000198A000-memory.dmp

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memory/1796-19-0x00000000010E0000-0x0000000001126000-memory.dmp

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memory/1796-16-0x0000000000400000-0x0000000000446000-memory.dmp

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memory/5024-27-0x0000000001010000-0x0000000001053000-memory.dmp

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memory/5024-29-0x0000000001010000-0x0000000001053000-memory.dmp

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memory/5024-31-0x0000000001010000-0x0000000001053000-memory.dmp

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memory/5024-36-0x0000000001010000-0x0000000001053000-memory.dmp

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