formbook | 522872381482e48bead08cb983ce213ba8e5fdfd19e7f4df2a571fc03352efae

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
17/08/2026, 03:05

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General

Target
output_vb4q4ky2.vbs
Size 282KB
Sample260817-dk835ssclf
SHA256 522872381482e48bead08cb983ce213ba8e5fdfd19e7f4df2a571fc03352efae
MD5 ebd2b9f126210cb4b5b797e8b4e71d5a
SHA1 42e591e66f182bda6e69ef83d2d5c2da7eb25f11
SHA512 cdbebd73aee26c227d5653ef7a14f5ed0052f4b958963fd8a8f06920e1363b3af88132018cd4d8d58351ec3a38aaea1f420df13ebb0c106155f34b36ac2e3b01
SSDEEP 6144:/ophIl4uusFWVhncAwpUuWhePViQEctwpIDo1dfGCrhu0IaSp:/oduETwXt8cRDon7ra/
TLSH
T186543A3DB0BDD771ECA002685662CA81053AD5C420E863603FFB689DF3BD5A9769235F
MD5 SHA1 SHA512 SSDEEP TLSH

Score

10^/10

adware collection discovery execution formbook persistence 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 2 IoCs

rat

resource	yara_rule
behavioral1/memory/5080-24-0x0000000000D80000-0x0000000000DC7000-memory.dmp	family_formbook
behavioral1/memory/3456-26-0x0000000000170000-0x00000000001B4000-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
6	3892	powershell.exe

Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

Run Powershell and hide display window.

execution

PowerShell

T1059.001

pid	Process
3892	powershell.exe

Downloads MZ/PE file 1 IoCs

flow	pid	Process
6	3892	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-1-5-21-540052884-2969440504-464782435-1000\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-1-5-21-540052884-2969440504-464782435-1000\SOFTWARE\Microsoft\Office\16.0\Outlook\Profiles\Outlook	chkdsk.exe

Executes a VBScript file via the Windows Script Host. 1 TTPs 1 IoCs

execution

Visual Basic

T1059.005

pid	Process
1088	WScript.exe

Suspicious use of SetThreadContext 6 IoCs

description	pid	Process	procid_target
PID 3892 set thread context of 5080	3892	powershell.exe	88
PID 5080 set thread context of 4764	5080	svchost.exe
PID 5080 set thread context of 3456	5080	svchost.exe	89
PID 3456 set thread context of 3276	3456	chkdsk.exe	56
PID 3456 set thread context of 4788	3456	chkdsk.exe	91
PID 3456 set thread context of 4584	3456	chkdsk.exe	96

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	chkdsk.exe

Enumerates system info in registry 2 TTPs 1 IoCs

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\Identifier	chkdsk.exe

Modifies Internet Explorer settings 1 TTPs 1 IoCs

adware spyware

Modify Registry

T1112

description	ioc	Process
Key created	\Registry\User\S-1-5-21-540052884-2969440504-464782435-1000\SOFTWARE\Microsoft\Internet Explorer\IntelliForms\Storage2	chkdsk.exe

Suspicious behavior: EnumeratesProcesses 31 IoCs

pid	Process
3892	powershell.exe
3892	powershell.exe
5080	svchost.exe
5080	svchost.exe
5080	svchost.exe
5080	svchost.exe
3456	chkdsk.exe
3456	chkdsk.exe
3456	chkdsk.exe
3456	chkdsk.exe
3456	chkdsk.exe
3456	chkdsk.exe
3456	chkdsk.exe
3456	chkdsk.exe
3456	chkdsk.exe
3456	chkdsk.exe
3456	chkdsk.exe
3456	chkdsk.exe
3456	chkdsk.exe
3456	chkdsk.exe
3456	chkdsk.exe
3456	chkdsk.exe
3456	chkdsk.exe
3456	chkdsk.exe
3456	chkdsk.exe
3456	chkdsk.exe
3456	chkdsk.exe
3456	chkdsk.exe
3456	chkdsk.exe
3456	chkdsk.exe
3456	chkdsk.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
3276	Explorer.EXE

Suspicious behavior: MapViewOfSection 7 IoCs

pid	Process
5080	svchost.exe
3456	chkdsk.exe
3456	chkdsk.exe
3456	chkdsk.exe
3456	chkdsk.exe
3456	chkdsk.exe
3456	chkdsk.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3892	powershell.exe

Suspicious use of UnmapMainImage 1 IoCs

pid	Process
3276	Explorer.EXE

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 1088 wrote to memory of 3892	1088	WScript.exe	86
PID 3892 wrote to memory of 5080	3892	powershell.exe	88
PID 3892 wrote to memory of 5080	3892	powershell.exe	88
PID 3892 wrote to memory of 5080	3892	powershell.exe	88
PID 3892 wrote to memory of 5080	3892	powershell.exe	88
PID 3456 wrote to memory of 4788	3456	chkdsk.exe	91
PID 3456 wrote to memory of 4584	3456	chkdsk.exe	96

Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
persistence

Query Registry
T1012

outlook_office_path 1 IoCs

description	ioc	Process
Key enumerated	\REGISTRY\USER\S-1-5-21-540052884-2969440504-464782435-1000\SOFTWARE\Microsoft\Office\16.0\Outlook\Profiles\Outlook	chkdsk.exe

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of UnmapMainImage
PID:3276
- C:\Windows\System32\WScript.exe
  "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\output_vb4q4ky2.vbs"
  2⤵
  - Checks computer location settings
  - Executes a VBScript file via the Windows Script Host.
  - Suspicious use of WriteProcessMemory
  PID:1088
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -NoP -EP Bypass -NonInteractive -WindowStyle Hidden -File "C:\Users\Admin\AppData\Local\Temp\878CB49E\878CB49E.ps1"
    3⤵
    - Badlisted process makes network request
    - Command and Scripting Interpreter: PowerShell
    - Downloads MZ/PE file
    - Suspicious use of SetThreadContext
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:3892
  - - C:\Windows\SysWow64\svchost.exe
      C:\Windows\SysWow64\svchost.exe
      4⤵
      Suspicious use of SetThreadContext
      Suspicious behavior: EnumeratesProcesses
      Suspicious behavior: MapViewOfSection
      PID:5080

C:\Windows\system32\wscript.exe
wscript.exe
1⤵
PID:440

C:\Windows\SysWOW64\chkdsk.exe
"C:\Windows\SysWOW64\chkdsk.exe"
1⤵
- Accesses Microsoft Outlook profiles
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Enumerates system info in registry
- Modifies Internet Explorer settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
- outlook_office_path
PID:3456
- C:\Program Files\Google\Chrome\Application\chrome.exe
  "C:\Program Files\Google\Chrome\Application\chrome.exe"
  2⤵
  PID:4788
- C:\Program Files\Mozilla Firefox\Firefox.exe
  "C:\Program Files\Mozilla Firefox\Firefox.exe"
  2⤵
  PID:4584

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:1392

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:4384

Network

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

PowerShell

T1059.001

Visual Basic

T1059.005

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

878CB49E.ps1

Path C:\Users\Admin\AppData\Local\Temp\878CB49E\878CB49E.ps1
Size 1KB
SHA256 74dbb260f024f0dd2c8817d0a94a391a03805623bc13e7ec8a348b2c2e232d5f
MD5 9a45db235b8724965bf5aee2d570a481
SHA1 c3bcdaea63c192e9c996ed1547cfaf25c5814107
SHA512 02ef515666233f0b9c0300f2a70d40f47ce986a3dce77b01815ee51e87d6f3e1f378b52a5ebc277d6763d00f22ebdbffc82c7cc0b2d2d4b067ab2826f69516f3
TLSH
T1D931327099CF973A04C080938AF796C9D6B41D0CBA5BAB25B7DACDCC010B596E6F1346
MD5 SHA1 SHA512 TLSH

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878CB49Ea

Path C:\Users\Admin\AppData\Local\Temp\878CB49E\878CB49Ea
Size 64KB
SHA256 4af46cda92a49e2ee849ba7e9c1601f91dbe6ed9c665122b23d4967ab137110e
MD5 91d1f59ca6c47ed93de048daa74b2fb7
SHA1 fd7fb294cee88811b5b568931a276387b8b14df0
SHA512 729cedb641ea6ff36643ccf3ac5983cc6ca04bc07ad7fd0a48d44fb7805b52e3ad106b2e475c2aef987ca1fcf26de8f5741b08eb706c28be4864fa35c4e14fb7
SSDEEP 1536:yjsi12jko28wBx1XKsnKQgIlGeenMy0NKq:yAi13WOYsKp3een0Nf
TLSH
T1055302C139371E337B580C78CD56E62790FD94E8F85E5A9E85F892978D9670AC80B8E0
MD5 SHA1 SHA512 SSDEEP TLSH

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878CB49Eb

Path C:\Users\Admin\AppData\Local\Temp\878CB49E\878CB49Eb
Size 64KB
SHA256 229fcc283910f537bbaf8ff61688025c9eaca60b2b550b924324d470ce7a746b
MD5 3962e21f9f471a196fead038fd5e05dd
SHA1 0528386f3c1075b3de057ecc591e2914e659a5a9
SHA512 53b09460dc7ec8d4d5474aa3a606d6822cd558d4de25b92973c9a5bd626fc82e879704d46d926ec2b4b3d97c226b377854e671930a96052902972bded271a370
SSDEEP 1536:BueapIPA8xTGMtRDGU6KCE1Gbjjb2cHKAiI1SvBJCPdoqCIH1rwXIU6E:BuLqAWGRUCE1mjyYKAdaUPNCIHy4xE
TLSH
T1A15302E52F5C216E3CFE4B04F2AD0C462A6675B4661D7DC2D232DF91207CFA1956AA20
MD5 SHA1 SHA512 SSDEEP TLSH

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__PSScriptPolicyTest_orxkvaqu.kby.ps1

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

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memory/3276-27-0x00000000089B0000-0x0000000008A70000-memory.dmp

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memory/3456-26-0x0000000000170000-0x00000000001B4000-memory.dmp

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memory/3456-25-0x0000000000170000-0x00000000001B4000-memory.dmp

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memory/3892-13-0x000001EA53800000-0x000001EA53822000-memory.dmp

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memory/3892-17-0x000001EA53A80000-0x000001EA53ACE000-memory.dmp

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memory/3892-18-0x000001EA52DB0000-0x000001EA52DC2000-memory.dmp

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memory/3892-5-0x000001EA52DD0000-0x000001EA52DE0000-memory.dmp

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memory/3892-4-0x000001EA52DD0000-0x000001EA52DE0000-memory.dmp

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memory/4584-35-0x000002BE69760000-0x000002BE6986B000-memory.dmp

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memory/4788-31-0x00000269DD6A0000-0x00000269DD799000-memory.dmp

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memory/5080-19-0x0000000000C30000-0x0000000000C77000-memory.dmp

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memory/5080-24-0x0000000000D80000-0x0000000000DC7000-memory.dmp

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