formbook | dc4e41353022a6a973bb53dc0ffc520422f24a7a927fa0fe94f6305bbfee9b3e

Analysis

max time kernel
149s
max time network
135s
platform
windows11-21h2_x64
resource
win11-20250410-en
resource tags

arch:x64arch:x86image:win11-20250410-enlocale:en-usos:windows11-21h2-x64system
submitted
17/04/2025, 09:33

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General

Target

Outstanding Backlog Payment R00199.exe
Size

608KB
MD5

245412f1362d84db2258b16efb3f0698
SHA1

bb3786e44c89ec1c05fe8667f39322699261be7e
SHA256

ea8cce203873c762292f08d1d461a3f38521f1e77bc175dd68b4fef76ceabd19
SHA512

99c8cb78adc80d528698e14e883e1f6318ff6bf80043b576228f439cebf1093e7da36f1ca5692c2a62d5ecdebe32affc3abb71aee1ae9b69fc05dec29a0632c9
SSDEEP

12288:PgCRx2yRy5qdpRL0WG/KPgSCUeM6SimU41QjMYkR:kyRaIBOCPgiQSimfAU

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 2 IoCs

rat

resource	yara_rule
behavioral2/memory/5052-35-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral2/memory/3756-88-0x0000000000C20000-0x0000000000C4F000-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
3200	powershell.exe
2688	powershell.exe

Uses the VBS compiler for execution 1 TTPs

Command and Scripting Interpreter
T1059

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 5816 set thread context of 5052	5816	Outstanding Backlog Payment R00199.exe	84
PID 5052 set thread context of 3328	5052	vbc.exe	52
PID 3756 set thread context of 3328	3756	cmmon32.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	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmmon32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Outstanding Backlog Payment R00199.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	powershell.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	powershell.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
1716	schtasks.exe

Suspicious behavior: EnumeratesProcesses 63 IoCs

pid	Process
5816	Outstanding Backlog Payment R00199.exe
5816	Outstanding Backlog Payment R00199.exe
5816	Outstanding Backlog Payment R00199.exe
5816	Outstanding Backlog Payment R00199.exe
3200	powershell.exe
2688	powershell.exe
5816	Outstanding Backlog Payment R00199.exe
5052	vbc.exe
5052	vbc.exe
5052	vbc.exe
5052	vbc.exe
3200	powershell.exe
2688	powershell.exe
3756	cmmon32.exe
3756	cmmon32.exe
3756	cmmon32.exe
3756	cmmon32.exe
3756	cmmon32.exe
3756	cmmon32.exe
3756	cmmon32.exe
3756	cmmon32.exe
3756	cmmon32.exe
3756	cmmon32.exe
3756	cmmon32.exe
3756	cmmon32.exe
3756	cmmon32.exe
3756	cmmon32.exe
3756	cmmon32.exe
3756	cmmon32.exe
3756	cmmon32.exe
3756	cmmon32.exe
3756	cmmon32.exe
3756	cmmon32.exe
3756	cmmon32.exe
3756	cmmon32.exe
3756	cmmon32.exe
3756	cmmon32.exe
3756	cmmon32.exe
3756	cmmon32.exe
3756	cmmon32.exe
3756	cmmon32.exe
3756	cmmon32.exe
3756	cmmon32.exe
3756	cmmon32.exe
3756	cmmon32.exe
3756	cmmon32.exe
3756	cmmon32.exe
3756	cmmon32.exe
3756	cmmon32.exe
3756	cmmon32.exe
3756	cmmon32.exe
3756	cmmon32.exe
3756	cmmon32.exe
3756	cmmon32.exe
3756	cmmon32.exe
3756	cmmon32.exe
3756	cmmon32.exe
3756	cmmon32.exe
3756	cmmon32.exe
3756	cmmon32.exe
3756	cmmon32.exe
3756	cmmon32.exe
3756	cmmon32.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
3328	Explorer.EXE

Suspicious behavior: MapViewOfSection 5 IoCs

pid	Process
5052	vbc.exe
5052	vbc.exe
5052	vbc.exe
3756	cmmon32.exe
3756	cmmon32.exe

Suspicious use of AdjustPrivilegeToken 57 IoCs

description	pid	Process
Token: SeDebugPrivilege	5816	Outstanding Backlog Payment R00199.exe
Token: SeDebugPrivilege	3200	powershell.exe
Token: SeDebugPrivilege	2688	powershell.exe
Token: SeDebugPrivilege	5052	vbc.exe
Token: SeShutdownPrivilege	3328	Explorer.EXE
Token: SeCreatePagefilePrivilege	3328	Explorer.EXE
Token: SeShutdownPrivilege	3328	Explorer.EXE
Token: SeCreatePagefilePrivilege	3328	Explorer.EXE
Token: SeDebugPrivilege	3756	cmmon32.exe
Token: SeShutdownPrivilege	3328	Explorer.EXE
Token: SeCreatePagefilePrivilege	3328	Explorer.EXE
Token: SeShutdownPrivilege	3328	Explorer.EXE
Token: SeCreatePagefilePrivilege	3328	Explorer.EXE
Token: SeShutdownPrivilege	3328	Explorer.EXE
Token: SeCreatePagefilePrivilege	3328	Explorer.EXE
Token: SeShutdownPrivilege	3328	Explorer.EXE
Token: SeCreatePagefilePrivilege	3328	Explorer.EXE
Token: SeShutdownPrivilege	3328	Explorer.EXE
Token: SeCreatePagefilePrivilege	3328	Explorer.EXE
Token: SeShutdownPrivilege	3328	Explorer.EXE
Token: SeCreatePagefilePrivilege	3328	Explorer.EXE
Token: SeShutdownPrivilege	3328	Explorer.EXE
Token: SeCreatePagefilePrivilege	3328	Explorer.EXE
Token: SeShutdownPrivilege	3328	Explorer.EXE
Token: SeCreatePagefilePrivilege	3328	Explorer.EXE
Token: SeShutdownPrivilege	3328	Explorer.EXE
Token: SeCreatePagefilePrivilege	3328	Explorer.EXE
Token: SeShutdownPrivilege	3328	Explorer.EXE
Token: SeCreatePagefilePrivilege	3328	Explorer.EXE
Token: SeShutdownPrivilege	3328	Explorer.EXE
Token: SeCreatePagefilePrivilege	3328	Explorer.EXE
Token: SeShutdownPrivilege	3328	Explorer.EXE
Token: SeCreatePagefilePrivilege	3328	Explorer.EXE
Token: SeShutdownPrivilege	3328	Explorer.EXE
Token: SeCreatePagefilePrivilege	3328	Explorer.EXE
Token: SeShutdownPrivilege	3328	Explorer.EXE
Token: SeCreatePagefilePrivilege	3328	Explorer.EXE
Token: SeShutdownPrivilege	3328	Explorer.EXE
Token: SeCreatePagefilePrivilege	3328	Explorer.EXE
Token: SeShutdownPrivilege	3328	Explorer.EXE
Token: SeCreatePagefilePrivilege	3328	Explorer.EXE
Token: SeShutdownPrivilege	3328	Explorer.EXE
Token: SeCreatePagefilePrivilege	3328	Explorer.EXE
Token: SeShutdownPrivilege	3328	Explorer.EXE
Token: SeCreatePagefilePrivilege	3328	Explorer.EXE
Token: SeShutdownPrivilege	3328	Explorer.EXE
Token: SeCreatePagefilePrivilege	3328	Explorer.EXE
Token: SeShutdownPrivilege	3328	Explorer.EXE
Token: SeCreatePagefilePrivilege	3328	Explorer.EXE
Token: SeShutdownPrivilege	3328	Explorer.EXE
Token: SeCreatePagefilePrivilege	3328	Explorer.EXE
Token: SeShutdownPrivilege	3328	Explorer.EXE
Token: SeCreatePagefilePrivilege	3328	Explorer.EXE
Token: SeShutdownPrivilege	3328	Explorer.EXE
Token: SeCreatePagefilePrivilege	3328	Explorer.EXE
Token: SeShutdownPrivilege	3328	Explorer.EXE
Token: SeCreatePagefilePrivilege	3328	Explorer.EXE

Suspicious use of WriteProcessMemory 21 IoCs

description	pid	Process	procid_target
PID 5816 wrote to memory of 3200	5816	Outstanding Backlog Payment R00199.exe	78
PID 5816 wrote to memory of 3200	5816	Outstanding Backlog Payment R00199.exe	78
PID 5816 wrote to memory of 3200	5816	Outstanding Backlog Payment R00199.exe	78
PID 5816 wrote to memory of 2688	5816	Outstanding Backlog Payment R00199.exe	80
PID 5816 wrote to memory of 2688	5816	Outstanding Backlog Payment R00199.exe	80
PID 5816 wrote to memory of 2688	5816	Outstanding Backlog Payment R00199.exe	80
PID 5816 wrote to memory of 1716	5816	Outstanding Backlog Payment R00199.exe	82
PID 5816 wrote to memory of 1716	5816	Outstanding Backlog Payment R00199.exe	82
PID 5816 wrote to memory of 1716	5816	Outstanding Backlog Payment R00199.exe	82
PID 5816 wrote to memory of 5052	5816	Outstanding Backlog Payment R00199.exe	84
PID 5816 wrote to memory of 5052	5816	Outstanding Backlog Payment R00199.exe	84
PID 5816 wrote to memory of 5052	5816	Outstanding Backlog Payment R00199.exe	84
PID 5816 wrote to memory of 5052	5816	Outstanding Backlog Payment R00199.exe	84
PID 5816 wrote to memory of 5052	5816	Outstanding Backlog Payment R00199.exe	84
PID 5816 wrote to memory of 5052	5816	Outstanding Backlog Payment R00199.exe	84
PID 3328 wrote to memory of 3756	3328	Explorer.EXE	85
PID 3328 wrote to memory of 3756	3328	Explorer.EXE	85
PID 3328 wrote to memory of 3756	3328	Explorer.EXE	85
PID 3756 wrote to memory of 4972	3756	cmmon32.exe	86
PID 3756 wrote to memory of 4972	3756	cmmon32.exe	86
PID 3756 wrote to memory of 4972	3756	cmmon32.exe	86

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3328
- C:\Users\Admin\AppData\Local\Temp\Outstanding Backlog Payment R00199.exe
  "C:\Users\Admin\AppData\Local\Temp\Outstanding Backlog Payment R00199.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:5816
- - 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\Outstanding Backlog Payment R00199.exe"
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:3200
- - C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\bhTHlT.exe"
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:2688
- - C:\Windows\SysWOW64\schtasks.exe
    "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\bhTHlT" /XML "C:\Users\Admin\AppData\Local\Temp\tmpBA28.tmp"
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:1716
- - 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:5052
- C:\Windows\SysWOW64\cmmon32.exe
  "C:\Windows\SysWOW64\cmmon32.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:3756
- - 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:4972

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
4b486d5b956aff71301153426775160c

SHA1
82ae87e39a3b27d715484cf62de3b2b8e774a0c6

SHA256
6af4089ca3c6394caa3d3fb179c6f4674c30b9c46fc948b4970e5da3d5b8c213

SHA512
79bc59b1484fec26368e18baeb1a711ba6ffa313220719a927467d0d435f2d087a7b59a8fd0cdb0b0d940adaa8f835da9abdc67c7bb398d33826fc4457a2c663

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_5dbdzok3.dyj.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmpBA28.tmp

Filesize
1KB

MD5
234f3b33fdfa082c44ad1fbba8bedd2c

SHA1
e22e9f1467fc91fd40bd008209764ed27ae8cc9a

SHA256
cadb8db424823f0f4cf4a9ac35d5ceb43c04c76a6e358270c4e18d41d7b688e6

SHA512
e1e1b292f2b7dc55cedc317bfb90eb5f49a7b933f436528753634520f4e1e04b953a4c9f1702c9d6040ecb01c5d01221c71955b05d0526c77baa91c66872065e

Download Submit
memory/2688-86-0x0000000074430000-0x0000000074BE1000-memory.dmp

Filesize
7.7MB

Download
memory/2688-62-0x0000000074CE0000-0x0000000074D2C000-memory.dmp

Filesize
304KB

Download
memory/2688-22-0x0000000074430000-0x0000000074BE1000-memory.dmp

Filesize
7.7MB

Download
memory/2688-36-0x0000000074430000-0x0000000074BE1000-memory.dmp

Filesize
7.7MB

Download
memory/2688-33-0x0000000074430000-0x0000000074BE1000-memory.dmp

Filesize
7.7MB

Download
memory/3200-73-0x0000000006E90000-0x0000000006E9A000-memory.dmp

Filesize
40KB

Download
memory/3200-50-0x0000000006A70000-0x0000000006AA4000-memory.dmp

Filesize
208KB

Download
memory/3200-15-0x0000000004620000-0x0000000004656000-memory.dmp

Filesize
216KB

Download
memory/3200-17-0x0000000074430000-0x0000000074BE1000-memory.dmp

Filesize
7.7MB

Download
memory/3200-16-0x0000000004C90000-0x00000000052BA000-memory.dmp

Filesize
6.2MB

Download
memory/3200-18-0x0000000074430000-0x0000000074BE1000-memory.dmp

Filesize
7.7MB

Download
memory/3200-19-0x0000000074430000-0x0000000074BE1000-memory.dmp

Filesize
7.7MB

Download
memory/3200-85-0x0000000074430000-0x0000000074BE1000-memory.dmp

Filesize
7.7MB

Download
memory/3200-20-0x0000000004C10000-0x0000000004C32000-memory.dmp

Filesize
136KB

Download
memory/3200-29-0x0000000005590000-0x00000000055F6000-memory.dmp

Filesize
408KB

Download
memory/3200-79-0x0000000007150000-0x0000000007158000-memory.dmp

Filesize
32KB

Download
memory/3200-24-0x0000000005470000-0x00000000054D6000-memory.dmp

Filesize
408KB

Download
memory/3200-34-0x0000000005600000-0x0000000005957000-memory.dmp

Filesize
3.3MB

Download
memory/3200-78-0x0000000007160000-0x000000000717A000-memory.dmp

Filesize
104KB

Download
memory/3200-77-0x0000000007060000-0x0000000007075000-memory.dmp

Filesize
84KB

Download
memory/3200-76-0x0000000007050000-0x000000000705E000-memory.dmp

Filesize
56KB

Download
memory/3200-75-0x0000000007020000-0x0000000007031000-memory.dmp

Filesize
68KB

Download
memory/3200-74-0x00000000070A0000-0x0000000007136000-memory.dmp

Filesize
600KB

Download
memory/3200-49-0x0000000005B50000-0x0000000005B9C000-memory.dmp

Filesize
304KB

Download
memory/3200-48-0x0000000005AB0000-0x0000000005ACE000-memory.dmp

Filesize
120KB

Download
memory/3200-51-0x0000000074CE0000-0x0000000074D2C000-memory.dmp

Filesize
304KB

Download
memory/3200-71-0x0000000007450000-0x0000000007ACA000-memory.dmp

Filesize
6.5MB

Download
memory/3200-60-0x0000000006AB0000-0x0000000006ACE000-memory.dmp

Filesize
120KB

Download
memory/3200-61-0x0000000006AD0000-0x0000000006B74000-memory.dmp

Filesize
656KB

Download
memory/3200-72-0x0000000006E10000-0x0000000006E2A000-memory.dmp

Filesize
104KB

Download
memory/3328-90-0x0000000007400000-0x0000000007542000-memory.dmp

Filesize
1.3MB

Download
memory/3756-88-0x0000000000C20000-0x0000000000C4F000-memory.dmp

Filesize
188KB

Download
memory/3756-87-0x0000000000C10000-0x0000000000C1C000-memory.dmp

Filesize
48KB

Download
memory/5052-35-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/5816-8-0x000000007443E000-0x000000007443F000-memory.dmp

Filesize
4KB

Download
memory/5816-46-0x0000000074430000-0x0000000074BE1000-memory.dmp

Filesize
7.7MB

Download
memory/5816-6-0x0000000074430000-0x0000000074BE1000-memory.dmp

Filesize
7.7MB

Download
memory/5816-7-0x00000000054E0000-0x00000000054F2000-memory.dmp

Filesize
72KB

Download
memory/5816-4-0x0000000005160000-0x00000000051FC000-memory.dmp

Filesize
624KB

Download
memory/5816-3-0x0000000005020000-0x00000000050B2000-memory.dmp

Filesize
584KB

Download
memory/5816-2-0x0000000005530000-0x0000000005AD6000-memory.dmp

Filesize
5.6MB

Download
memory/5816-9-0x0000000074430000-0x0000000074BE1000-memory.dmp

Filesize
7.7MB

Download
memory/5816-1-0x00000000004D0000-0x000000000056A000-memory.dmp

Filesize
616KB

Download
memory/5816-5-0x0000000005010000-0x000000000501A000-memory.dmp

Filesize
40KB

Download
memory/5816-0-0x000000007443E000-0x000000007443F000-memory.dmp

Filesize
4KB

Download
memory/5816-10-0x0000000006580000-0x00000000065F8000-memory.dmp

Filesize
480KB

Download