formbook | bc3ac9ee4158d4ab67adcf4dc4c4134ad68335438b7e5afdcddbb24c2e832a91

Analysis

max time kernel
149s
max time network
152s
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, 12:31

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General

Target
tmpsao01l4t.js
Size 1.9MB
Sample260602-pp85gsds91
SHA256 bc3ac9ee4158d4ab67adcf4dc4c4134ad68335438b7e5afdcddbb24c2e832a91
MD5 4c4173b7bffdb12e2ec642f3637caefb
SHA1 888cf62358e924b162f3b77c61750f7e13777a72
SHA512 ce0ab9b5a949174c6a5cc322800300b6044c8cbe3ba3b7d8bdbb2edf2b6a2f02d4eef6e4369299678ccb85841014ca4cae05320bb17f98fabf2b5224df2d0adc
SSDEEP 24576:SB8O6sVnvGdMk2mIHMI5BFBPTG4QWCv4jJI68V6MSbtQPGaNv2gFiu/mOk:SBP62GioITG9z0xYKQlw7
TLSH
T19495021189C42FB4CFAC561980FD260E93F04A9A541AB98DFB73BE4BFFA7604520719D
MD5 SHA1 SHA512 SSDEEP TLSH

Score

10^/10

adware collection 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/2480-19-0x0000000000FD0000-0x0000000001016000-memory.dmp	family_formbook
behavioral2/memory/2480-21-0x0000000000FD0000-0x0000000001016000-memory.dmp	family_formbook
behavioral2/memory/2480-26-0x0000000000FD0000-0x0000000001016000-memory.dmp	family_formbook
behavioral2/memory/2320-27-0x0000000000900000-0x0000000000943000-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
44	2024	wscript.exe

Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

Run Powershell and hide display window.

execution

PowerShell

T1059.001

pid	Process
1064	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-1-5-21-1788976790-1541110888-1636651838-1000\Control Panel\International\Geo\Nation	wscript.exe

Accesses Microsoft Outlook profiles 1 TTPs 1 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key enumerated	\REGISTRY\USER\S-1-5-21-1788976790-1541110888-1636651838-1000\SOFTWARE\Microsoft\Office\16.0\Outlook\Profiles\Outlook	newdev.exe

ConfuserEx .NET packer 1 IoCs

Detects ConfuserEx .NET packer.

resource	yara_rule
behavioral2/memory/1064-13-0x000001EF9A970000-0x000001EF9A980000-memory.dmp	ConfuserEx

Suspicious use of SetThreadContext 13 IoCs

description	pid	Process	procid_target
PID 1064 set thread context of 2480	1064	powershell.exe	102
PID 2480 set thread context of 2024	2480	aspnet_compiler.exe	84
PID 2480 set thread context of 2320	2480	aspnet_compiler.exe	107
PID 1064 set thread context of 4020	1064	powershell.exe	108
PID 2320 set thread context of 2024	2320	newdev.exe	84
PID 1064 set thread context of 3808	1064	powershell.exe	109
PID 1064 set thread context of 1928	1064	powershell.exe	116
PID 1064 set thread context of 3708	1064	powershell.exe	120
PID 1064 set thread context of 752	1064	powershell.exe	122
PID 2320 set thread context of 4940	2320	newdev.exe	121
PID 1064 set thread context of 1208	1064	powershell.exe	126
PID 1064 set thread context of 2788	1064	powershell.exe	128
PID 2320 set thread context of 1280	2320	newdev.exe	131

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	newdev.exe

Kills process with taskkill 1 IoCs

defense_evasion

pid	Process
1848	taskkill.exe

Modifies Internet Explorer settings 1 TTPs 1 IoCs

adware spyware

Modify Registry

T1112

description	ioc	Process
Key created	\Registry\User\S-1-5-21-1788976790-1541110888-1636651838-1000\SOFTWARE\Microsoft\Internet Explorer\IntelliForms\Storage2	newdev.exe

Suspicious behavior: EnumeratesProcesses 42 IoCs

pid	Process
1064	powershell.exe
1064	powershell.exe
1064	powershell.exe
1064	powershell.exe
1064	powershell.exe
1064	powershell.exe
1064	powershell.exe
1064	powershell.exe
1064	powershell.exe
1064	powershell.exe
1064	powershell.exe
1064	powershell.exe
1064	powershell.exe
1064	powershell.exe
2480	aspnet_compiler.exe
2480	aspnet_compiler.exe
2480	aspnet_compiler.exe
2480	aspnet_compiler.exe
1064	powershell.exe
1064	powershell.exe
2320	newdev.exe
2320	newdev.exe
2320	newdev.exe
2320	newdev.exe
1064	powershell.exe
4020	aspnet_compiler.exe
1064	powershell.exe
3808	aspnet_compiler.exe
1064	powershell.exe
1064	powershell.exe
1064	powershell.exe
1928	aspnet_compiler.exe
1064	powershell.exe
3708	aspnet_compiler.exe
1064	powershell.exe
752	aspnet_compiler.exe
1064	powershell.exe
1064	powershell.exe
1064	powershell.exe
1208	aspnet_compiler.exe
1064	powershell.exe
2788	aspnet_compiler.exe

Suspicious behavior: MapViewOfSection 9 IoCs

pid	Process
2480	aspnet_compiler.exe
2024	wscript.exe
2024	wscript.exe
2320	newdev.exe
2320	newdev.exe
2320	newdev.exe
2320	newdev.exe
2320	newdev.exe
2320	newdev.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1064	powershell.exe
Token: SeDebugPrivilege	1848	taskkill.exe

Suspicious use of WriteProcessMemory 36 IoCs

description	pid	Process	procid_target
PID 2024 wrote to memory of 1064	2024	wscript.exe	85
PID 1064 wrote to memory of 3504	1064	powershell.exe	92
PID 1064 wrote to memory of 2468	1064	powershell.exe	93
PID 1064 wrote to memory of 3876	1064	powershell.exe	94
PID 1064 wrote to memory of 3076	1064	powershell.exe	95
PID 1064 wrote to memory of 876	1064	powershell.exe	96
PID 1064 wrote to memory of 2480	1064	powershell.exe	102
PID 1064 wrote to memory of 2480	1064	powershell.exe	102
PID 1064 wrote to memory of 2480	1064	powershell.exe	102
PID 2024 wrote to memory of 2320	2024	wscript.exe	107
PID 1064 wrote to memory of 4020	1064	powershell.exe	108
PID 1064 wrote to memory of 4020	1064	powershell.exe	108
PID 1064 wrote to memory of 4020	1064	powershell.exe	108
PID 1064 wrote to memory of 3808	1064	powershell.exe	109
PID 1064 wrote to memory of 3808	1064	powershell.exe	109
PID 1064 wrote to memory of 3808	1064	powershell.exe	109
PID 1064 wrote to memory of 4384	1064	powershell.exe	115
PID 1064 wrote to memory of 1928	1064	powershell.exe	116
PID 1064 wrote to memory of 1928	1064	powershell.exe	116
PID 1064 wrote to memory of 1928	1064	powershell.exe	116
PID 1064 wrote to memory of 3708	1064	powershell.exe	120
PID 1064 wrote to memory of 3708	1064	powershell.exe	120
PID 1064 wrote to memory of 3708	1064	powershell.exe	120
PID 2320 wrote to memory of 4940	2320	newdev.exe	121
PID 1064 wrote to memory of 752	1064	powershell.exe	122
PID 1064 wrote to memory of 752	1064	powershell.exe	122
PID 1064 wrote to memory of 752	1064	powershell.exe	122
PID 1064 wrote to memory of 2892	1064	powershell.exe	125
PID 1064 wrote to memory of 1208	1064	powershell.exe	126
PID 1064 wrote to memory of 1208	1064	powershell.exe	126
PID 1064 wrote to memory of 1208	1064	powershell.exe	126
PID 1064 wrote to memory of 2788	1064	powershell.exe	128
PID 1064 wrote to memory of 2788	1064	powershell.exe	128
PID 1064 wrote to memory of 2788	1064	powershell.exe	128
PID 2024 wrote to memory of 1848	2024	wscript.exe	129
PID 2320 wrote to memory of 1280	2320	newdev.exe	131

outlook_office_path 1 IoCs

description	ioc	Process
Key enumerated	\REGISTRY\USER\S-1-5-21-1788976790-1541110888-1636651838-1000\SOFTWARE\Microsoft\Office\16.0\Outlook\Profiles\Outlook	newdev.exe

C:\Windows\system32\wscript.exe
wscript.exe C:\Users\Admin\AppData\Local\Temp\tmpsao01l4t.js
1⤵
- Badlisted process makes network request
- Checks computer location settings
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:2024
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  powershell.exe -ExecutionPolicy Bypass -NoProfile -WindowStyle Hidden -File "C:\Temp\ps_AGuFY1hyO0H6_1780403490345.ps1"
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious use of SetThreadContext
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:1064
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe
    "C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe"
    3⤵
    PID:3504
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe
    "C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe"
    3⤵
    PID:2468
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe
    "C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe"
    3⤵
    PID:3876
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe
    "C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe"
    3⤵
    PID:3076
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe
    "C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe"
    3⤵
    PID:876
- - 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:2480
- - 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:4020
- - 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:3808
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe
    "C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe"
    3⤵
    PID:4384
- - 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:1928
- - 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:3708
- - 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:752
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe
    "C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe"
    3⤵
    PID:2892
- - 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:1208
- - 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:2788
- C:\Windows\SysWOW64\newdev.exe
  "C:\Windows\SysWOW64\newdev.exe"
  2⤵
  - Accesses Microsoft Outlook profiles
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Modifies Internet Explorer settings
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of WriteProcessMemory
  - outlook_office_path
  PID:2320
- - C:\Program Files\Google\Chrome\Application\chrome.exe
    "C:\Program Files\Google\Chrome\Application\chrome.exe"
    3⤵
    PID:4940
- - C:\Program Files\Mozilla Firefox\Firefox.exe
    "C:\Program Files\Mozilla Firefox\Firefox.exe"
    3⤵
    PID:1280
- C:\Windows\System32\taskkill.exe
  "C:\Windows\System32\taskkill.exe" /f /im wscript.exe
  2⤵
  - Kills process with taskkill
  - Suspicious use of AdjustPrivilegeToken
  PID:1848

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:4084

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:868

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

Query Registry

T1012

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Email Collection

T1114

Command and Control

Exfiltration

Impact

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Downloads

ps_AGuFY1hyO0H6_1780403490345.ps1

Path C:\Temp\ps_AGuFY1hyO0H6_1780403490345.ps1
Size 1.4MB
SHA256 7689ba1a05e782922baedc4b4f31468d0a39063d8b114c64affeeff5ab901368
MD5 123a34d0787e2f3b42998ef0a9689f8c
SHA1 f5d0d4cf24c1a5671db501d9630dd1b59787370a
SHA512 8dd1efefd509655d756e0e626643dc9e8397af7039207673815056c1a8670fa2cd0b99a80b282bd38b9d1ce2028c89eab6ea7cc7b4c33bd0d95e8108733add20
SSDEEP 24576:fWgSwfYWKRY0FBGo9Yb4g3zp7CMLA8EdqDM3uyel1G6G8UK/AllZdubI9pBTgHYy:nXKRYl/EdxXenVaZdo2phEfD
TLSH
T188653300CF969C7B25BCA71DA0BF7E198B637EC2A84D9CE31495ADC7057C2468977828
MD5 SHA1 SHA512 SSDEEP TLSH

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__PSScriptPolicyTest_lvi5kiw4.olc.ps1

Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_lvi5kiw4.olc.ps1
Size 60B
SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
MD5 d17fe0a3f47be24a6453e9ef58c94641
SHA1 6ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA512 5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82
TLSH
T177A02228CC303B200020C0080A000002C00B800C080C8C0220000A00B20B820002F080
MD5 SHA1 SHA512 TLSH

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memory/1064-17-0x000001EFFF190000-0x000001EFFF1A0000-memory.dmp

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memory/1064-18-0x000001EFFF190000-0x000001EFFF1A0000-memory.dmp

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memory/1064-2-0x000001EFFF190000-0x000001EFFF1A0000-memory.dmp

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memory/1064-12-0x000001EFFF190000-0x000001EFFF1A0000-memory.dmp

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memory/1064-13-0x000001EF9A970000-0x000001EF9A980000-memory.dmp

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memory/1064-14-0x000001EF9A980000-0x000001EF9A986000-memory.dmp

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memory/1064-1-0x000001EFFF190000-0x000001EFFF1A0000-memory.dmp

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memory/1064-24-0x000001EFFF190000-0x000001EFFF1A0000-memory.dmp

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memory/1064-22-0x000001EFFF190000-0x000001EFFF1A0000-memory.dmp

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memory/1064-15-0x000001EFFF190000-0x000001EFFF1A0000-memory.dmp

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memory/1064-3-0x000001EFFEA30000-0x000001EFFEA52000-memory.dmp

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memory/1280-45-0x00000294EA160000-0x00000294EA257000-memory.dmp

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memory/2024-41-0x000001DE08530000-0x000001DE0862A000-memory.dmp

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memory/2024-23-0x0000000000D40000-0x0000000002C4F000-memory.dmp

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memory/2024-30-0x000001DE08530000-0x000001DE0862A000-memory.dmp

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memory/2024-29-0x0000000000D40000-0x0000000002C4F000-memory.dmp

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memory/2320-27-0x0000000000900000-0x0000000000943000-memory.dmp

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memory/2320-25-0x0000000000900000-0x0000000000943000-memory.dmp

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memory/2480-20-0x0000000001540000-0x000000000188A000-memory.dmp

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memory/2480-26-0x0000000000FD0000-0x0000000001016000-memory.dmp

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memory/2480-21-0x0000000000FD0000-0x0000000001016000-memory.dmp

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memory/2480-19-0x0000000000FD0000-0x0000000001016000-memory.dmp

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memory/2480-16-0x0000000000400000-0x0000000000446000-memory.dmp

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memory/4940-38-0x0000015FF3A10000-0x0000015FF3ABA000-memory.dmp

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