formbook | 97a6697bdf6b79e86895f5f7af8307fa9b101a518d8c1d803de856bdea1a6f8a

Analysis

max time kernel
149s
max time network
147s
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, 12:33

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General

Target
tmpomn1eu9_.js
Size 1.9MB
Sample260602-prhqbaev8p
SHA256 97a6697bdf6b79e86895f5f7af8307fa9b101a518d8c1d803de856bdea1a6f8a
MD5 0353760d217d5ee5e4085af950237ea5
SHA1 c71e27c6c962f41e066bf6de51061afbd2392d13
SHA512 f6205a304c16cde6b4f7542a4df59bc465eff0fdeb6b1fd1676a4778ec1f4d3a588ac0c3ecd81f531aa0cdb13c410ac01505aa0f55604ac251f2914c91351b4d
SSDEEP 24576:ZBjfaBGiWNhrIBohZtTXGtEr+kdzc230ynhgGSXy+QnY63JOfSJbfAn8XabmLDWm:z74Io8oWcPrdQ13tvG2Xn
TLSH
T12A95021549C42FB9CFAC2A1940FE161EA3F04A8E5016698AEF33FE47FFE7A045117199
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/816-17-0x00000000013E0000-0x0000000001426000-memory.dmp	family_formbook
behavioral2/memory/816-20-0x00000000013E0000-0x0000000001426000-memory.dmp	family_formbook
behavioral2/memory/816-22-0x00000000013E0000-0x0000000001426000-memory.dmp	family_formbook
behavioral2/memory/816-28-0x00000000013E0000-0x0000000001426000-memory.dmp	family_formbook
behavioral2/memory/1464-31-0x0000000000960000-0x00000000009A3000-memory.dmp	family_formbook
behavioral2/memory/1464-35-0x0000000000960000-0x00000000009A3000-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
30	3516	wscript.exe

Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

Run Powershell and hide display window.

execution

PowerShell

T1059.001

pid	Process
1692	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

ConfuserEx .NET packer 2 IoCs

Detects ConfuserEx .NET packer.

resource	yara_rule
behavioral2/memory/1692-12-0x0000029FE2460000-0x0000029FE2470000-memory.dmp	ConfuserEx
behavioral2/memory/1692-23-0x0000029FE02A0000-0x0000029FE02B0000-memory.dmp	ConfuserEx

Suspicious use of SetThreadContext 11 IoCs

description	pid	Process	procid_target
PID 1692 set thread context of 816	1692	powershell.exe	98
PID 816 set thread context of 3516	816	aspnet_compiler.exe	86
PID 816 set thread context of 1464	816	aspnet_compiler.exe	99
PID 1692 set thread context of 4508	1692	powershell.exe	100
PID 1464 set thread context of 3516	1464	upnpcont.exe	86
PID 1692 set thread context of 720	1692	powershell.exe	101
PID 1692 set thread context of 100	1692	powershell.exe	102
PID 1692 set thread context of 2996	1692	powershell.exe	107
PID 1692 set thread context of 4152	1692	powershell.exe	109
PID 1692 set thread context of 3988	1692	powershell.exe	111
PID 1692 set thread context of 5084	1692	powershell.exe	116

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
4860	taskkill.exe

Suspicious behavior: EnumeratesProcesses 44 IoCs

pid	Process
1692	powershell.exe
1692	powershell.exe
1692	powershell.exe
1692	powershell.exe
1692	powershell.exe
1692	powershell.exe
1692	powershell.exe
1692	powershell.exe
1692	powershell.exe
1692	powershell.exe
1692	powershell.exe
1692	powershell.exe
1692	powershell.exe
1692	powershell.exe
816	aspnet_compiler.exe
816	aspnet_compiler.exe
816	aspnet_compiler.exe
816	aspnet_compiler.exe
1692	powershell.exe
1464	upnpcont.exe
1464	upnpcont.exe
1464	upnpcont.exe
1464	upnpcont.exe
1692	powershell.exe
4508	aspnet_compiler.exe
1692	powershell.exe
720	aspnet_compiler.exe
1692	powershell.exe
100	aspnet_compiler.exe
1692	powershell.exe
1692	powershell.exe
1692	powershell.exe
1692	powershell.exe
1692	powershell.exe
2996	aspnet_compiler.exe
1692	powershell.exe
1692	powershell.exe
1692	powershell.exe
4152	aspnet_compiler.exe
1692	powershell.exe
3988	aspnet_compiler.exe
1692	powershell.exe
1692	powershell.exe
5084	aspnet_compiler.exe

Suspicious behavior: MapViewOfSection 5 IoCs

pid	Process
816	aspnet_compiler.exe
3516	wscript.exe
3516	wscript.exe
1464	upnpcont.exe
1464	upnpcont.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1692	powershell.exe
Token: SeDebugPrivilege	4860	taskkill.exe

Suspicious use of WriteProcessMemory 35 IoCs

description	pid	Process	procid_target
PID 3516 wrote to memory of 1692	3516	wscript.exe	88
PID 1692 wrote to memory of 4128	1692	powershell.exe	93
PID 1692 wrote to memory of 4280	1692	powershell.exe	94
PID 1692 wrote to memory of 1676	1692	powershell.exe	95
PID 1692 wrote to memory of 3372	1692	powershell.exe	96
PID 1692 wrote to memory of 3124	1692	powershell.exe	97
PID 1692 wrote to memory of 816	1692	powershell.exe	98
PID 1692 wrote to memory of 816	1692	powershell.exe	98
PID 1692 wrote to memory of 816	1692	powershell.exe	98
PID 3516 wrote to memory of 1464	3516	wscript.exe	99
PID 1692 wrote to memory of 4508	1692	powershell.exe	100
PID 1692 wrote to memory of 4508	1692	powershell.exe	100
PID 1692 wrote to memory of 4508	1692	powershell.exe	100
PID 1692 wrote to memory of 720	1692	powershell.exe	101
PID 1692 wrote to memory of 720	1692	powershell.exe	101
PID 1692 wrote to memory of 720	1692	powershell.exe	101
PID 1692 wrote to memory of 100	1692	powershell.exe	102
PID 1692 wrote to memory of 100	1692	powershell.exe	102
PID 1692 wrote to memory of 100	1692	powershell.exe	102
PID 1692 wrote to memory of 1788	1692	powershell.exe	105
PID 1692 wrote to memory of 2012	1692	powershell.exe	106
PID 1692 wrote to memory of 2996	1692	powershell.exe	107
PID 1692 wrote to memory of 2996	1692	powershell.exe	107
PID 1692 wrote to memory of 2996	1692	powershell.exe	107
PID 1692 wrote to memory of 4912	1692	powershell.exe	108
PID 1692 wrote to memory of 4152	1692	powershell.exe	109
PID 1692 wrote to memory of 4152	1692	powershell.exe	109
PID 1692 wrote to memory of 4152	1692	powershell.exe	109
PID 1692 wrote to memory of 3988	1692	powershell.exe	111
PID 1692 wrote to memory of 3988	1692	powershell.exe	111
PID 1692 wrote to memory of 3988	1692	powershell.exe	111
PID 1692 wrote to memory of 5084	1692	powershell.exe	116
PID 1692 wrote to memory of 5084	1692	powershell.exe	116
PID 1692 wrote to memory of 5084	1692	powershell.exe	116
PID 3516 wrote to memory of 4860	3516	wscript.exe	119

C:\Windows\system32\wscript.exe
wscript.exe C:\Users\Admin\AppData\Local\Temp\tmpomn1eu9_.js
1⤵
- Badlisted process makes network request
- Checks computer location settings
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:3516
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  powershell.exe -ExecutionPolicy Bypass -NoProfile -WindowStyle Hidden -File "C:\Temp\ps_vQnUjSmBcSK5_1780403622063.ps1"
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious use of SetThreadContext
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  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⤵
    PID:4128
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe
    "C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe"
    3⤵
    PID:4280
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe
    "C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe"
    3⤵
    PID:1676
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe
    "C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe"
    3⤵
    PID:3372
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe
    "C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe"
    3⤵
    PID:3124
- - 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:816
- - 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:4508
- - 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:720
- - 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:100
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe
    "C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe"
    3⤵
    PID:1788
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe
    "C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe"
    3⤵
    PID:2012
- - 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:2996
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe
    "C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe"
    3⤵
    PID:4912
- - 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:4152
- - 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:3988
- - 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:5084
- 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:1464
- C:\Windows\System32\taskkill.exe
  "C:\Windows\System32\taskkill.exe" /f /im wscript.exe
  2⤵
  - Kills process with taskkill
  - Suspicious use of AdjustPrivilegeToken
  PID:4860

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_vQnUjSmBcSK5_1780403622063.ps1

Path C:\Temp\ps_vQnUjSmBcSK5_1780403622063.ps1
Size 1.4MB
SHA256 23e23ec1b4cd855e454a2558c192b78a843278281c97f9816a03095122c510e0
MD5 1a6385170bca04ae3a7e86b5902310cd
SHA1 7f95b97212e7535e1370e62a0e0026ffc6365090
SHA512 e2601b7a617e1e2a23413abd30c0374baa7c2a54b9220bc7ce4c18084fb020b5c7b4dba458572613eba41f9eb0ec20bdba374f10c4ece544c1f67f1bd5f5ead9
SSDEEP 24576:8e6mzgvCkqvhG2pXeAVOv8H9QM+OkyQ7TDPienRmTN8sjYADi4z:8rgkqvhGE/VOv8dvKBo0ADLz
TLSH
T105652320BB9BFCED435C835A50339F1A4A509F525CADE8C662B270C26BF5707A167D2C
MD5 SHA1 SHA512 SSDEEP TLSH

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__PSScriptPolicyTest_t0p0r2o5.h2h.ps1

Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_t0p0r2o5.h2h.ps1
Size 60B
SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
MD5 d17fe0a3f47be24a6453e9ef58c94641
SHA1 6ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA512 5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82
TLSH
T177A02228CC303B200020C0080A000002C00B800C080C8C0220000A00B20B820002F080
MD5 SHA1 SHA512 TLSH

Submit Download

memory/816-19-0x0000000001A30000-0x0000000001D7A000-memory.dmp

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memory/816-28-0x00000000013E0000-0x0000000001426000-memory.dmp

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memory/816-22-0x00000000013E0000-0x0000000001426000-memory.dmp

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memory/816-24-0x00000000019B0000-0x00000000019D4000-memory.dmp

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memory/816-27-0x00000000013E0000-0x0000000001426000-memory.dmp

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memory/816-20-0x00000000013E0000-0x0000000001426000-memory.dmp

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memory/816-15-0x0000000000400000-0x0000000000446000-memory.dmp

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memory/816-29-0x00000000019B0000-0x00000000019D4000-memory.dmp

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memory/816-17-0x00000000013E0000-0x0000000001426000-memory.dmp

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memory/1464-31-0x0000000000960000-0x00000000009A3000-memory.dmp

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memory/1464-25-0x0000000000960000-0x00000000009A3000-memory.dmp

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memory/1464-30-0x00000000014A0000-0x00000000017EA000-memory.dmp

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memory/1464-38-0x00000000010B0000-0x0000000001153000-memory.dmp

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memory/1464-33-0x00000000010B0000-0x0000000001153000-memory.dmp

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memory/1464-26-0x0000000000960000-0x00000000009A3000-memory.dmp

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memory/1464-35-0x0000000000960000-0x00000000009A3000-memory.dmp

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memory/1692-14-0x0000029FE02A0000-0x0000029FE02B0000-memory.dmp

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memory/1692-23-0x0000029FE02A0000-0x0000029FE02B0000-memory.dmp

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memory/1692-21-0x0000029FE02A0000-0x0000029FE02B0000-memory.dmp

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memory/1692-16-0x0000029FE02A0000-0x0000029FE02B0000-memory.dmp

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memory/1692-18-0x0000029FE02A0000-0x0000029FE02B0000-memory.dmp

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memory/1692-1-0x0000029FE02A0000-0x0000029FE02B0000-memory.dmp

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memory/1692-13-0x0000029FE2470000-0x0000029FE2476000-memory.dmp

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memory/1692-12-0x0000029FE2460000-0x0000029FE2470000-memory.dmp

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memory/1692-11-0x0000029FE02A0000-0x0000029FE02B0000-memory.dmp

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memory/1692-9-0x0000029FE0270000-0x0000029FE0292000-memory.dmp

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memory/3516-34-0x0000013C66960000-0x0000013C66A60000-memory.dmp

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memory/3516-43-0x0000013C66960000-0x0000013C66A60000-memory.dmp

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