formbook | 29f7df8459441a2eae26fe2934d1512ecc7dfde332bfd939af7430bceb9c9708

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
22/05/2026, 23:23

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General

Target
tmp7s_u77ll.js
Size 3.0MB
Sample260522-3dendsax3s
SHA256 29f7df8459441a2eae26fe2934d1512ecc7dfde332bfd939af7430bceb9c9708
MD5 b72caad0294d03b5d9b22f4b65afd600
SHA1 7d4a44e091e1c5f95a0ef54ce9f8e7a7ba86577b
SHA512 66bc98e047968bcfe632e0f24bc279cea370a8ff86302908b875889d61d23eb3f72ac010067be2eacd580407491f5f6baae70cebb03b0afdea72b100a0708a3f
SSDEEP 49152:hr8VaFquOrIVcqPwgLK641f3PD2984vpW2kv5+5ICes2AJ:/
TLSH
T11FE55B17D66F974E18093B61106A5D9AFE89CAFCEF726BC4E0CF90B210EE1110B855B7
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
behavioral2/memory/2308-17-0x00000000009D0000-0x0000000000A17000-memory.dmp	family_formbook
behavioral2/memory/2308-20-0x00000000009D0000-0x0000000000A17000-memory.dmp	family_formbook
behavioral2/memory/2308-25-0x00000000009D0000-0x0000000000A17000-memory.dmp	family_formbook
behavioral2/memory/1500-26-0x00000000004E0000-0x0000000000524000-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	2188	wscript.exe

Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

Run Powershell and hide display window.

execution

PowerShell

T1059.001

pid	Process
1544	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

ConfuserEx .NET packer 4 IoCs

Detects ConfuserEx .NET packer.

resource	yara_rule
behavioral2/memory/1544-12-0x0000025CB36E0000-0x0000025CB36F4000-memory.dmp	ConfuserEx
behavioral2/memory/1544-15-0x0000025CCBD00000-0x0000025CCBD14000-memory.dmp	ConfuserEx
behavioral2/memory/1544-27-0x0000025CCE130000-0x0000025CCE144000-memory.dmp	ConfuserEx
behavioral2/memory/1544-35-0x0000025CB35F0000-0x0000025CB3604000-memory.dmp	ConfuserEx

Suspicious use of SetThreadContext 11 IoCs

description	pid	Process	procid_target
PID 1544 set thread context of 2308	1544	powershell.exe	96
PID 2308 set thread context of 2188	2308	aspnet_compiler.exe	85
PID 2308 set thread context of 1500	2308	aspnet_compiler.exe	97
PID 1544 set thread context of 4264	1544	powershell.exe	106
PID 1500 set thread context of 2188	1500	mcbuilder.exe	85
PID 1544 set thread context of 2492	1544	powershell.exe	108
PID 1544 set thread context of 2520	1544	powershell.exe	111
PID 1544 set thread context of 1452	1544	powershell.exe	115
PID 1544 set thread context of 2152	1544	powershell.exe	117
PID 1544 set thread context of 816	1544	powershell.exe	121
PID 1544 set thread context of 2812	1544	powershell.exe	122

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	mcbuilder.exe

Kills process with taskkill 1 IoCs

defense_evasion

pid	Process
4864	taskkill.exe

Suspicious behavior: EnumeratesProcesses 45 IoCs

pid	Process
1544	powershell.exe
1544	powershell.exe
1544	powershell.exe
1544	powershell.exe
1544	powershell.exe
1544	powershell.exe
1544	powershell.exe
1544	powershell.exe
1544	powershell.exe
1544	powershell.exe
1544	powershell.exe
1544	powershell.exe
1544	powershell.exe
1544	powershell.exe
2308	aspnet_compiler.exe
2308	aspnet_compiler.exe
2308	aspnet_compiler.exe
2308	aspnet_compiler.exe
1544	powershell.exe
1500	mcbuilder.exe
1500	mcbuilder.exe
1500	mcbuilder.exe
1500	mcbuilder.exe
1544	powershell.exe
4264	aspnet_compiler.exe
1544	powershell.exe
2492	aspnet_compiler.exe
1544	powershell.exe
1544	powershell.exe
1544	powershell.exe
2520	aspnet_compiler.exe
1544	powershell.exe
1544	powershell.exe
1544	powershell.exe
1452	aspnet_compiler.exe
1544	powershell.exe
1544	powershell.exe
1544	powershell.exe
2152	aspnet_compiler.exe
1544	powershell.exe
1544	powershell.exe
1544	powershell.exe
816	aspnet_compiler.exe
1544	powershell.exe
2812	aspnet_compiler.exe

Suspicious behavior: MapViewOfSection 5 IoCs

pid	Process
2308	aspnet_compiler.exe
2188	wscript.exe
2188	wscript.exe
1500	mcbuilder.exe
1500	mcbuilder.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1544	powershell.exe
Token: SeDebugPrivilege	4864	taskkill.exe

Suspicious use of WriteProcessMemory 36 IoCs

description	pid	Process	procid_target
PID 2188 wrote to memory of 1544	2188	wscript.exe	88
PID 1544 wrote to memory of 2156	1544	powershell.exe	91
PID 1544 wrote to memory of 3224	1544	powershell.exe	92
PID 1544 wrote to memory of 1252	1544	powershell.exe	93
PID 1544 wrote to memory of 2008	1544	powershell.exe	94
PID 1544 wrote to memory of 3496	1544	powershell.exe	95
PID 1544 wrote to memory of 2308	1544	powershell.exe	96
PID 1544 wrote to memory of 2308	1544	powershell.exe	96
PID 1544 wrote to memory of 2308	1544	powershell.exe	96
PID 2188 wrote to memory of 1500	2188	wscript.exe	97
PID 1544 wrote to memory of 4264	1544	powershell.exe	106
PID 1544 wrote to memory of 4264	1544	powershell.exe	106
PID 1544 wrote to memory of 4264	1544	powershell.exe	106
PID 1544 wrote to memory of 2492	1544	powershell.exe	108
PID 1544 wrote to memory of 2492	1544	powershell.exe	108
PID 1544 wrote to memory of 2492	1544	powershell.exe	108
PID 1544 wrote to memory of 4584	1544	powershell.exe	110
PID 1544 wrote to memory of 2520	1544	powershell.exe	111
PID 1544 wrote to memory of 2520	1544	powershell.exe	111
PID 1544 wrote to memory of 2520	1544	powershell.exe	111
PID 1544 wrote to memory of 5020	1544	powershell.exe	114
PID 1544 wrote to memory of 1452	1544	powershell.exe	115
PID 1544 wrote to memory of 1452	1544	powershell.exe	115
PID 1544 wrote to memory of 1452	1544	powershell.exe	115
PID 1544 wrote to memory of 2856	1544	powershell.exe	116
PID 1544 wrote to memory of 2152	1544	powershell.exe	117
PID 1544 wrote to memory of 2152	1544	powershell.exe	117
PID 1544 wrote to memory of 2152	1544	powershell.exe	117
PID 1544 wrote to memory of 3704	1544	powershell.exe	120
PID 1544 wrote to memory of 816	1544	powershell.exe	121
PID 1544 wrote to memory of 816	1544	powershell.exe	121
PID 1544 wrote to memory of 816	1544	powershell.exe	121
PID 1544 wrote to memory of 2812	1544	powershell.exe	122
PID 1544 wrote to memory of 2812	1544	powershell.exe	122
PID 1544 wrote to memory of 2812	1544	powershell.exe	122
PID 2188 wrote to memory of 4864	2188	wscript.exe	123

C:\Windows\system32\wscript.exe
wscript.exe C:\Users\Admin\AppData\Local\Temp\tmp7s_u77ll.js
1⤵
- Badlisted process makes network request
- Checks computer location settings
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:2188
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  powershell.exe -ExecutionPolicy Bypass -NoProfile -WindowStyle Hidden -File "C:\Temp\ps_H5jRkRkJw2ex_1779492218048.ps1"
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious use of SetThreadContext
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:1544
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe
    "C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe"
    3⤵
    PID:2156
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe
    "C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe"
    3⤵
    PID:3224
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe
    "C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe"
    3⤵
    PID:1252
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe
    "C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe"
    3⤵
    PID:2008
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe
    "C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe"
    3⤵
    PID:3496
- - 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:2308
- - 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:4264
- - 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:2492
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe
    "C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe"
    3⤵
    PID:4584
- - 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:2520
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe
    "C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe"
    3⤵
    PID:5020
- - 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:1452
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe
    "C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe"
    3⤵
    PID:2856
- - 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:2152
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe
    "C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe"
    3⤵
    PID:3704
- - 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: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:2812
- C:\Windows\SysWOW64\mcbuilder.exe
  "C:\Windows\SysWOW64\mcbuilder.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: MapViewOfSection
  PID:1500
- 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_H5jRkRkJw2ex_1779492218048.ps1

Path C:\Temp\ps_H5jRkRkJw2ex_1779492218048.ps1
Size 2.2MB
SHA256 4e56cedc87d5a6b6751ef4036f80246b54a02bd261f5d7a806e64d6ca02fd294
MD5 87f71d38b1f5cd4dbfe5f5d269b6b3b9
SHA1 f5326ef0f013f54d9d54e6ce1d33847d3138d4b7
SHA512 a8271b52c2c8b0a35af570f84b77af00f1aeacb2b2e50c9da8bd3ee4e39397acfe68046c7e9fd9cf303a484042d658d5cd1457fdc7ef47624f3a4cd7205d70d1
SSDEEP 24576:Io2AGpEXfDTiGFFjYFcMI5qu3DRbmn6A2N+IO5P2Mi8/DAqU9VOi/L3eLPN3m4ot:l
TLSH
T1A2B5BFDAD16E44D29C053FC9A8142BC78B2546728E7400283A6FBD499F774FEC05EEE6
MD5 SHA1 SHA512 SSDEEP TLSH

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__PSScriptPolicyTest_dkgsvbt0.aqc.ps1

Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_dkgsvbt0.aqc.ps1
Size 60B
SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
MD5 d17fe0a3f47be24a6453e9ef58c94641
SHA1 6ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA512 5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82
TLSH
T177A02228CC303B200020C0080A000002C00B800C080C8C0220000A00B20B820002F080
MD5 SHA1 SHA512 TLSH

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memory/1500-24-0x00000000004E0000-0x0000000000524000-memory.dmp

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memory/1500-26-0x00000000004E0000-0x0000000000524000-memory.dmp

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memory/1544-18-0x0000025CCBD10000-0x0000025CCBD20000-memory.dmp

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memory/1544-35-0x0000025CB35F0000-0x0000025CB3604000-memory.dmp

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memory/1544-13-0x0000025CCBCE0000-0x0000025CCBCE6000-memory.dmp

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memory/1544-14-0x0000025CCBD10000-0x0000025CCBD20000-memory.dmp

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memory/1544-15-0x0000025CCBD00000-0x0000025CCBD14000-memory.dmp

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memory/1544-9-0x0000025CCDEC0000-0x0000025CCDEE2000-memory.dmp

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memory/1544-27-0x0000025CCE130000-0x0000025CCE144000-memory.dmp

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memory/1544-12-0x0000025CB36E0000-0x0000025CB36F4000-memory.dmp

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memory/1544-1-0x0000025CCBD10000-0x0000025CCBD20000-memory.dmp

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memory/1544-11-0x0000025CCBD10000-0x0000025CCBD20000-memory.dmp

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memory/1544-21-0x0000025CCBD10000-0x0000025CCBD20000-memory.dmp

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memory/1544-23-0x0000025CCBD10000-0x0000025CCBD20000-memory.dmp

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memory/2188-22-0x0000000000AB0000-0x0000000003B4D000-memory.dmp

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memory/2188-30-0x0000026678710000-0x00000266787EE000-memory.dmp

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memory/2188-29-0x0000000000AB0000-0x0000000003B4D000-memory.dmp

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memory/2188-38-0x0000026678710000-0x00000266787EE000-memory.dmp

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memory/2308-19-0x0000000000FB0000-0x00000000012FA000-memory.dmp

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memory/2308-25-0x00000000009D0000-0x0000000000A17000-memory.dmp

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memory/2308-20-0x00000000009D0000-0x0000000000A17000-memory.dmp

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memory/2308-17-0x00000000009D0000-0x0000000000A17000-memory.dmp

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memory/2308-16-0x0000000000400000-0x0000000000447000-memory.dmp

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