formbook | be838fc4e67ed12838f4d0ec554524d54e80a03a3949ced4edfb958edbcb24b8

Analysis

max time kernel
149s
max time network
148s
platform
windows11-21h2_x64
resource
win11-20250411-en
resource tags

arch:x64arch:x86image:win11-20250411-enlocale:en-usos:windows11-21h2-x64system
submitted
16/04/2025, 13:47

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General

Target

REVISEDPO009988.exe
Size

646KB
MD5

ba5b2fbbda46bc857101b8737700f671
SHA1

d07d211aeb27c0fb7fdef5956791fccfed6494f1
SHA256

be838fc4e67ed12838f4d0ec554524d54e80a03a3949ced4edfb958edbcb24b8
SHA512

e7503c578b2ee30dcfe9deced81fd206fa50362a1df9f6d2c6fc5e07d70a9a735750470027617d999e4aeedaaa21e806bcb6374c92246f67daf000bf3229f456
SSDEEP

12288:/sf2Thr0xWYGf0iuHfRvb3bvAGv/qlxm2y3A5fYQIkR:UfKhr6WYmTuHKGvClkMgQf

Score

10^/10

formbook bi14 discovery execution rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

Version

4.1

Campaign

bi14

Decoy

ilansocials.online

rishticodiegfortyseven.online

ostase-ba.cfd

cinema.tech

omprasyacol.store

esir.shop

umhyal3gvbpl.xyz

lurv.wtf

aospin-sms.xyz

itness-apps-workout1.sbs

reshcarluxury.shop

3xq3.cyou

erraceheatpassion.lifestyle

octurasys.net

ilyrug.net

yj889.xyz

railertof.net

4270766.xyz

sduoduo11.sbs

oeboom.net

Signatures

Formbook
Formbook is a data stealing malware which is capable of stealing data.
trojan spyware stealer formbook
Formbook family
formbook

Formbook payload 3 IoCs

rat

resource	yara_rule
behavioral2/memory/4948-29-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral2/memory/4948-87-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral2/memory/3472-90-0x00000000004E0000-0x000000000050F000-memory.dmp	formbook

Command and Scripting Interpreter: PowerShell 1 TTPs 2 IoCs

Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

execution

PowerShell

T1059.001

pid	Process
4696	powershell.exe
4576	powershell.exe

Uses the VBS compiler for execution 1 TTPs

Command and Scripting Interpreter
T1059

Suspicious use of SetThreadContext 4 IoCs

description	pid	Process	procid_target
PID 1564 set thread context of 4948	1564	REVISEDPO009988.exe	84
PID 4948 set thread context of 3376	4948	vbc.exe	52
PID 4948 set thread context of 3376	4948	vbc.exe	52
PID 3472 set thread context of 3376	3472	wlanext.exe	52

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 6 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	wlanext.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	REVISEDPO009988.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	powershell.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	powershell.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe

Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence execution

Scheduled Task

T1053.005

pid	Process
4812	schtasks.exe

Suspicious behavior: EnumeratesProcesses 61 IoCs

pid	Process
1564	REVISEDPO009988.exe
1564	REVISEDPO009988.exe
1564	REVISEDPO009988.exe
1564	REVISEDPO009988.exe
4696	powershell.exe
4576	powershell.exe
1564	REVISEDPO009988.exe
4948	vbc.exe
4948	vbc.exe
4948	vbc.exe
4948	vbc.exe
4696	powershell.exe
4576	powershell.exe
4948	vbc.exe
4948	vbc.exe
3472	wlanext.exe
3472	wlanext.exe
3472	wlanext.exe
3472	wlanext.exe
3472	wlanext.exe
3472	wlanext.exe
3472	wlanext.exe
3472	wlanext.exe
3472	wlanext.exe
3472	wlanext.exe
3472	wlanext.exe
3472	wlanext.exe
3472	wlanext.exe
3472	wlanext.exe
3472	wlanext.exe
3472	wlanext.exe
3472	wlanext.exe
3472	wlanext.exe
3472	wlanext.exe
3472	wlanext.exe
3472	wlanext.exe
3472	wlanext.exe
3472	wlanext.exe
3472	wlanext.exe
3472	wlanext.exe
3472	wlanext.exe
3472	wlanext.exe
3472	wlanext.exe
3472	wlanext.exe
3472	wlanext.exe
3472	wlanext.exe
3472	wlanext.exe
3472	wlanext.exe
3472	wlanext.exe
3472	wlanext.exe
3472	wlanext.exe
3472	wlanext.exe
3472	wlanext.exe
3472	wlanext.exe
3472	wlanext.exe
3472	wlanext.exe
3472	wlanext.exe
3472	wlanext.exe
3472	wlanext.exe
3472	wlanext.exe
3472	wlanext.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
3376	Explorer.EXE

Suspicious behavior: MapViewOfSection 6 IoCs

pid	Process
4948	vbc.exe
4948	vbc.exe
4948	vbc.exe
4948	vbc.exe
3472	wlanext.exe
3472	wlanext.exe

Suspicious use of AdjustPrivilegeToken 53 IoCs

description	pid	Process
Token: SeDebugPrivilege	1564	REVISEDPO009988.exe
Token: SeDebugPrivilege	4696	powershell.exe
Token: SeDebugPrivilege	4576	powershell.exe
Token: SeDebugPrivilege	4948	vbc.exe
Token: SeShutdownPrivilege	3376	Explorer.EXE
Token: SeCreatePagefilePrivilege	3376	Explorer.EXE
Token: SeShutdownPrivilege	3376	Explorer.EXE
Token: SeCreatePagefilePrivilege	3376	Explorer.EXE
Token: SeShutdownPrivilege	3376	Explorer.EXE
Token: SeCreatePagefilePrivilege	3376	Explorer.EXE
Token: SeDebugPrivilege	3472	wlanext.exe
Token: SeShutdownPrivilege	3376	Explorer.EXE
Token: SeCreatePagefilePrivilege	3376	Explorer.EXE
Token: SeShutdownPrivilege	3376	Explorer.EXE
Token: SeCreatePagefilePrivilege	3376	Explorer.EXE
Token: SeShutdownPrivilege	3376	Explorer.EXE
Token: SeCreatePagefilePrivilege	3376	Explorer.EXE
Token: SeShutdownPrivilege	3376	Explorer.EXE
Token: SeCreatePagefilePrivilege	3376	Explorer.EXE
Token: SeShutdownPrivilege	3376	Explorer.EXE
Token: SeCreatePagefilePrivilege	3376	Explorer.EXE
Token: SeShutdownPrivilege	3376	Explorer.EXE
Token: SeCreatePagefilePrivilege	3376	Explorer.EXE
Token: SeShutdownPrivilege	3376	Explorer.EXE
Token: SeCreatePagefilePrivilege	3376	Explorer.EXE
Token: SeShutdownPrivilege	3376	Explorer.EXE
Token: SeCreatePagefilePrivilege	3376	Explorer.EXE
Token: SeShutdownPrivilege	3376	Explorer.EXE
Token: SeCreatePagefilePrivilege	3376	Explorer.EXE
Token: SeShutdownPrivilege	3376	Explorer.EXE
Token: SeCreatePagefilePrivilege	3376	Explorer.EXE
Token: SeShutdownPrivilege	3376	Explorer.EXE
Token: SeCreatePagefilePrivilege	3376	Explorer.EXE
Token: SeShutdownPrivilege	3376	Explorer.EXE
Token: SeCreatePagefilePrivilege	3376	Explorer.EXE
Token: SeShutdownPrivilege	3376	Explorer.EXE
Token: SeCreatePagefilePrivilege	3376	Explorer.EXE
Token: SeShutdownPrivilege	3376	Explorer.EXE
Token: SeCreatePagefilePrivilege	3376	Explorer.EXE
Token: SeShutdownPrivilege	3376	Explorer.EXE
Token: SeCreatePagefilePrivilege	3376	Explorer.EXE
Token: SeShutdownPrivilege	3376	Explorer.EXE
Token: SeCreatePagefilePrivilege	3376	Explorer.EXE
Token: SeShutdownPrivilege	3376	Explorer.EXE
Token: SeCreatePagefilePrivilege	3376	Explorer.EXE
Token: SeShutdownPrivilege	3376	Explorer.EXE
Token: SeCreatePagefilePrivilege	3376	Explorer.EXE
Token: SeShutdownPrivilege	3376	Explorer.EXE
Token: SeCreatePagefilePrivilege	3376	Explorer.EXE
Token: SeShutdownPrivilege	3376	Explorer.EXE
Token: SeCreatePagefilePrivilege	3376	Explorer.EXE
Token: SeShutdownPrivilege	3376	Explorer.EXE
Token: SeCreatePagefilePrivilege	3376	Explorer.EXE

Suspicious use of WriteProcessMemory 21 IoCs

description	pid	Process	procid_target
PID 1564 wrote to memory of 4696	1564	REVISEDPO009988.exe	78
PID 1564 wrote to memory of 4696	1564	REVISEDPO009988.exe	78
PID 1564 wrote to memory of 4696	1564	REVISEDPO009988.exe	78
PID 1564 wrote to memory of 4576	1564	REVISEDPO009988.exe	80
PID 1564 wrote to memory of 4576	1564	REVISEDPO009988.exe	80
PID 1564 wrote to memory of 4576	1564	REVISEDPO009988.exe	80
PID 1564 wrote to memory of 4812	1564	REVISEDPO009988.exe	82
PID 1564 wrote to memory of 4812	1564	REVISEDPO009988.exe	82
PID 1564 wrote to memory of 4812	1564	REVISEDPO009988.exe	82
PID 1564 wrote to memory of 4948	1564	REVISEDPO009988.exe	84
PID 1564 wrote to memory of 4948	1564	REVISEDPO009988.exe	84
PID 1564 wrote to memory of 4948	1564	REVISEDPO009988.exe	84
PID 1564 wrote to memory of 4948	1564	REVISEDPO009988.exe	84
PID 1564 wrote to memory of 4948	1564	REVISEDPO009988.exe	84
PID 1564 wrote to memory of 4948	1564	REVISEDPO009988.exe	84
PID 3376 wrote to memory of 3472	3376	Explorer.EXE	85
PID 3376 wrote to memory of 3472	3376	Explorer.EXE	85
PID 3376 wrote to memory of 3472	3376	Explorer.EXE	85
PID 3472 wrote to memory of 4468	3472	wlanext.exe	86
PID 3472 wrote to memory of 4468	3472	wlanext.exe	86
PID 3472 wrote to memory of 4468	3472	wlanext.exe	86

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3376
- C:\Users\Admin\AppData\Local\Temp\REVISEDPO009988.exe
  "C:\Users\Admin\AppData\Local\Temp\REVISEDPO009988.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:1564
- - C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Local\Temp\REVISEDPO009988.exe"
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:4696
- - C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\aorjhXHEYJs.exe"
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:4576
- - C:\Windows\SysWOW64\schtasks.exe
    "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\aorjhXHEYJs" /XML "C:\Users\Admin\AppData\Local\Temp\tmpEFAF.tmp"
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:4812
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe
    "C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe"
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious behavior: MapViewOfSection
    - Suspicious use of AdjustPrivilegeToken
    PID:4948
- C:\Windows\SysWOW64\wlanext.exe
  "C:\Windows\SysWOW64\wlanext.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:3472
- - C:\Windows\SysWOW64\cmd.exe
    /c del "C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe"
    3⤵
    - System Location Discovery: System Language Discovery
    PID:4468

Network

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

PowerShell

T1059.001

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Persistence

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Privilege Escalation

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Defense Evasion

Credential Access

Discovery

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

C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\powershell.exe.log

Filesize
2KB

MD5
ac4917a885cf6050b1a483e4bc4d2ea5

SHA1
b1c0a9f27bd21c6bbb8e9be70db8777b4a2a640f

SHA256
e39062a62c3c7617feeeff95ea8a0be51104a0d36f46e44eea22556fda74d8d9

SHA512
092c67a3ecae1d187cad72a8ea1ea37cb78a0cf79c2cd7fb88953e5990669a2e871267015762fd46d274badb88ac0c1d73b00f1df7394d89bed48a3a45c2ba3d

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

Filesize
18KB

MD5
632c6dbad8ec871c33ad23b5fc1d433c

SHA1
216204ff20b28c6862a15bc977dafac35c6d705c

SHA256
278e598127772f6869bcce1e2c384047fef9e73ad0f757a31f10320cfa78987f

SHA512
a1e0ba1b4d8b1b884d52bf35800edb01d7d1e04819f83b73d4c12eae560e2e4bcd92a3512d135d3e0d941b04d7c307457e7bb24b71f40566c6b39aacea5ad314

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_hrtvu2sb.nmh.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmpEFAF.tmp

Filesize
1KB

MD5
23e2d61ddde82bad8367efb7dae98453

SHA1
5d535419372056744b68d0402a0d2c23556a3ca0

SHA256
4a8b227bba06d93b4ab1e4335ce48456f95654a2a9042ce2b0bc6c5cb4bceb87

SHA512
c6b7fc28643762c80bd081fbb3cd05a942b997d54aacb8b69a977e6abaeb9912bd68e2361c02f8e7be349f3b0e41211057952d7e50909b79be3433f8a2c1c044

Download Submit
memory/1564-10-0x0000000007AD0000-0x0000000007B48000-memory.dmp

Filesize
480KB

Download
memory/1564-9-0x0000000074E40000-0x00000000755F1000-memory.dmp

Filesize
7.7MB

Download
memory/1564-4-0x0000000005170000-0x000000000520C000-memory.dmp

Filesize
624KB

Download
memory/1564-5-0x0000000005040000-0x000000000504A000-memory.dmp

Filesize
40KB

Download
memory/1564-6-0x0000000074E40000-0x00000000755F1000-memory.dmp

Filesize
7.7MB

Download
memory/1564-7-0x00000000052A0000-0x00000000052B2000-memory.dmp

Filesize
72KB

Download
memory/1564-8-0x0000000074E4E000-0x0000000074E4F000-memory.dmp

Filesize
4KB

Download
memory/1564-1-0x00000000004F0000-0x0000000000594000-memory.dmp

Filesize
656KB

Download
memory/1564-2-0x0000000005680000-0x0000000005C26000-memory.dmp

Filesize
5.6MB

Download
memory/1564-32-0x0000000074E40000-0x00000000755F1000-memory.dmp

Filesize
7.7MB

Download
memory/1564-0-0x0000000074E4E000-0x0000000074E4F000-memory.dmp

Filesize
4KB

Download
memory/1564-3-0x00000000050D0000-0x0000000005162000-memory.dmp

Filesize
584KB

Download
memory/3376-92-0x0000000006260000-0x0000000006343000-memory.dmp

Filesize
908KB

Download
memory/3472-90-0x00000000004E0000-0x000000000050F000-memory.dmp

Filesize
188KB

Download
memory/3472-89-0x0000000000EF0000-0x0000000000F07000-memory.dmp

Filesize
92KB

Download
memory/3472-88-0x0000000000EF0000-0x0000000000F07000-memory.dmp

Filesize
92KB

Download
memory/4576-33-0x0000000074E40000-0x00000000755F1000-memory.dmp

Filesize
7.7MB

Download
memory/4576-86-0x0000000074E40000-0x00000000755F1000-memory.dmp

Filesize
7.7MB

Download
memory/4576-19-0x0000000074E40000-0x00000000755F1000-memory.dmp

Filesize
7.7MB

Download
memory/4576-46-0x0000000074E40000-0x00000000755F1000-memory.dmp

Filesize
7.7MB

Download
memory/4576-67-0x00000000756F0000-0x000000007573C000-memory.dmp

Filesize
304KB

Download
memory/4696-48-0x0000000006630000-0x000000000664E000-memory.dmp

Filesize
120KB

Download
memory/4696-76-0x0000000007BC0000-0x0000000007BCE000-memory.dmp

Filesize
56KB

Download
memory/4696-49-0x0000000006BF0000-0x0000000006C3C000-memory.dmp

Filesize
304KB

Download
memory/4696-60-0x0000000006B90000-0x0000000006BAE000-memory.dmp

Filesize
120KB

Download
memory/4696-61-0x0000000007630000-0x00000000076D4000-memory.dmp

Filesize
656KB

Download
memory/4696-51-0x00000000756F0000-0x000000007573C000-memory.dmp

Filesize
304KB

Download
memory/4696-50-0x00000000075F0000-0x0000000007624000-memory.dmp

Filesize
208KB

Download
memory/4696-63-0x0000000007980000-0x000000000799A000-memory.dmp

Filesize
104KB

Download
memory/4696-62-0x0000000007FC0000-0x000000000863A000-memory.dmp

Filesize
6.5MB

Download
memory/4696-64-0x0000000007A00000-0x0000000007A0A000-memory.dmp

Filesize
40KB

Download
memory/4696-65-0x0000000007C10000-0x0000000007CA6000-memory.dmp

Filesize
600KB

Download
memory/4696-66-0x0000000007B90000-0x0000000007BA1000-memory.dmp

Filesize
68KB

Download
memory/4696-31-0x0000000006140000-0x0000000006497000-memory.dmp

Filesize
3.3MB

Download
memory/4696-45-0x0000000074E40000-0x00000000755F1000-memory.dmp

Filesize
7.7MB

Download
memory/4696-77-0x0000000007BD0000-0x0000000007BE5000-memory.dmp

Filesize
84KB

Download
memory/4696-78-0x0000000007CD0000-0x0000000007CEA000-memory.dmp

Filesize
104KB

Download
memory/4696-79-0x0000000007CC0000-0x0000000007CC8000-memory.dmp

Filesize
32KB

Download
memory/4696-82-0x0000000074E40000-0x00000000755F1000-memory.dmp

Filesize
7.7MB

Download
memory/4696-21-0x0000000005FC0000-0x0000000005FE2000-memory.dmp

Filesize
136KB

Download
memory/4696-22-0x0000000006060000-0x00000000060C6000-memory.dmp

Filesize
408KB

Download
memory/4696-23-0x00000000060D0000-0x0000000006136000-memory.dmp

Filesize
408KB

Download
memory/4696-15-0x0000000005190000-0x00000000051C6000-memory.dmp

Filesize
216KB

Download
memory/4696-16-0x0000000074E40000-0x00000000755F1000-memory.dmp

Filesize
7.7MB

Download
memory/4696-18-0x0000000074E40000-0x00000000755F1000-memory.dmp

Filesize
7.7MB

Download
memory/4696-17-0x0000000005810000-0x0000000005E3A000-memory.dmp

Filesize
6.2MB

Download
memory/4948-87-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/4948-29-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download