formbook | dc4e41353022a6a973bb53dc0ffc520422f24a7a927fa0fe94f6305bbfee9b3e

Analysis

max time kernel
150s
max time network
136s
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, 09:29

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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/4300-42-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral2/memory/6040-87-0x0000000000A70000-0x0000000000A9F000-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
3300	powershell.exe
3964	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 5384 set thread context of 4300	5384	Outstanding Backlog Payment R00199.exe	85
PID 4300 set thread context of 3284	4300	vbc.exe	52
PID 6040 set thread context of 3284	6040	cmd.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	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
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.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
3788	schtasks.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
5384	Outstanding Backlog Payment R00199.exe
5384	Outstanding Backlog Payment R00199.exe
5384	Outstanding Backlog Payment R00199.exe
5384	Outstanding Backlog Payment R00199.exe
3300	powershell.exe
3964	powershell.exe
5384	Outstanding Backlog Payment R00199.exe
5384	Outstanding Backlog Payment R00199.exe
5384	Outstanding Backlog Payment R00199.exe
4300	vbc.exe
4300	vbc.exe
4300	vbc.exe
4300	vbc.exe
3964	powershell.exe
3300	powershell.exe
6040	cmd.exe
6040	cmd.exe
6040	cmd.exe
6040	cmd.exe
6040	cmd.exe
6040	cmd.exe
6040	cmd.exe
6040	cmd.exe
6040	cmd.exe
6040	cmd.exe
6040	cmd.exe
6040	cmd.exe
6040	cmd.exe
6040	cmd.exe
6040	cmd.exe
6040	cmd.exe
6040	cmd.exe
6040	cmd.exe
6040	cmd.exe
6040	cmd.exe
6040	cmd.exe
6040	cmd.exe
6040	cmd.exe
6040	cmd.exe
6040	cmd.exe
6040	cmd.exe
6040	cmd.exe
6040	cmd.exe
6040	cmd.exe
6040	cmd.exe
6040	cmd.exe
6040	cmd.exe
6040	cmd.exe
6040	cmd.exe
6040	cmd.exe
6040	cmd.exe
6040	cmd.exe
6040	cmd.exe
6040	cmd.exe
6040	cmd.exe
6040	cmd.exe
6040	cmd.exe
6040	cmd.exe
6040	cmd.exe
6040	cmd.exe
6040	cmd.exe
6040	cmd.exe
6040	cmd.exe
6040	cmd.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
3284	Explorer.EXE

Suspicious behavior: MapViewOfSection 5 IoCs

pid	Process
4300	vbc.exe
4300	vbc.exe
4300	vbc.exe
6040	cmd.exe
6040	cmd.exe

Suspicious use of AdjustPrivilegeToken 49 IoCs

description	pid	Process
Token: SeDebugPrivilege	5384	Outstanding Backlog Payment R00199.exe
Token: SeDebugPrivilege	3964	powershell.exe
Token: SeDebugPrivilege	3300	powershell.exe
Token: SeDebugPrivilege	4300	vbc.exe
Token: SeShutdownPrivilege	3284	Explorer.EXE
Token: SeCreatePagefilePrivilege	3284	Explorer.EXE
Token: SeShutdownPrivilege	3284	Explorer.EXE
Token: SeCreatePagefilePrivilege	3284	Explorer.EXE
Token: SeDebugPrivilege	6040	cmd.exe
Token: SeShutdownPrivilege	3284	Explorer.EXE
Token: SeCreatePagefilePrivilege	3284	Explorer.EXE
Token: SeShutdownPrivilege	3284	Explorer.EXE
Token: SeCreatePagefilePrivilege	3284	Explorer.EXE
Token: SeShutdownPrivilege	3284	Explorer.EXE
Token: SeCreatePagefilePrivilege	3284	Explorer.EXE
Token: SeShutdownPrivilege	3284	Explorer.EXE
Token: SeCreatePagefilePrivilege	3284	Explorer.EXE
Token: SeShutdownPrivilege	3284	Explorer.EXE
Token: SeCreatePagefilePrivilege	3284	Explorer.EXE
Token: SeShutdownPrivilege	3284	Explorer.EXE
Token: SeCreatePagefilePrivilege	3284	Explorer.EXE
Token: SeShutdownPrivilege	3284	Explorer.EXE
Token: SeCreatePagefilePrivilege	3284	Explorer.EXE
Token: SeShutdownPrivilege	3284	Explorer.EXE
Token: SeCreatePagefilePrivilege	3284	Explorer.EXE
Token: SeShutdownPrivilege	3284	Explorer.EXE
Token: SeCreatePagefilePrivilege	3284	Explorer.EXE
Token: SeShutdownPrivilege	3284	Explorer.EXE
Token: SeCreatePagefilePrivilege	3284	Explorer.EXE
Token: SeShutdownPrivilege	3284	Explorer.EXE
Token: SeCreatePagefilePrivilege	3284	Explorer.EXE
Token: SeShutdownPrivilege	3284	Explorer.EXE
Token: SeCreatePagefilePrivilege	3284	Explorer.EXE
Token: SeShutdownPrivilege	3284	Explorer.EXE
Token: SeCreatePagefilePrivilege	3284	Explorer.EXE
Token: SeShutdownPrivilege	3284	Explorer.EXE
Token: SeCreatePagefilePrivilege	3284	Explorer.EXE
Token: SeShutdownPrivilege	3284	Explorer.EXE
Token: SeCreatePagefilePrivilege	3284	Explorer.EXE
Token: SeShutdownPrivilege	3284	Explorer.EXE
Token: SeCreatePagefilePrivilege	3284	Explorer.EXE
Token: SeShutdownPrivilege	3284	Explorer.EXE
Token: SeCreatePagefilePrivilege	3284	Explorer.EXE
Token: SeShutdownPrivilege	3284	Explorer.EXE
Token: SeCreatePagefilePrivilege	3284	Explorer.EXE
Token: SeShutdownPrivilege	3284	Explorer.EXE
Token: SeCreatePagefilePrivilege	3284	Explorer.EXE
Token: SeShutdownPrivilege	3284	Explorer.EXE
Token: SeCreatePagefilePrivilege	3284	Explorer.EXE

Suspicious use of WriteProcessMemory 24 IoCs

description	pid	Process	procid_target
PID 5384 wrote to memory of 3300	5384	Outstanding Backlog Payment R00199.exe	78
PID 5384 wrote to memory of 3300	5384	Outstanding Backlog Payment R00199.exe	78
PID 5384 wrote to memory of 3300	5384	Outstanding Backlog Payment R00199.exe	78
PID 5384 wrote to memory of 3964	5384	Outstanding Backlog Payment R00199.exe	80
PID 5384 wrote to memory of 3964	5384	Outstanding Backlog Payment R00199.exe	80
PID 5384 wrote to memory of 3964	5384	Outstanding Backlog Payment R00199.exe	80
PID 5384 wrote to memory of 3788	5384	Outstanding Backlog Payment R00199.exe	82
PID 5384 wrote to memory of 3788	5384	Outstanding Backlog Payment R00199.exe	82
PID 5384 wrote to memory of 3788	5384	Outstanding Backlog Payment R00199.exe	82
PID 5384 wrote to memory of 4424	5384	Outstanding Backlog Payment R00199.exe	84
PID 5384 wrote to memory of 4424	5384	Outstanding Backlog Payment R00199.exe	84
PID 5384 wrote to memory of 4424	5384	Outstanding Backlog Payment R00199.exe	84
PID 5384 wrote to memory of 4300	5384	Outstanding Backlog Payment R00199.exe	85
PID 5384 wrote to memory of 4300	5384	Outstanding Backlog Payment R00199.exe	85
PID 5384 wrote to memory of 4300	5384	Outstanding Backlog Payment R00199.exe	85
PID 5384 wrote to memory of 4300	5384	Outstanding Backlog Payment R00199.exe	85
PID 5384 wrote to memory of 4300	5384	Outstanding Backlog Payment R00199.exe	85
PID 5384 wrote to memory of 4300	5384	Outstanding Backlog Payment R00199.exe	85
PID 3284 wrote to memory of 6040	3284	Explorer.EXE	86
PID 3284 wrote to memory of 6040	3284	Explorer.EXE	86
PID 3284 wrote to memory of 6040	3284	Explorer.EXE	86
PID 6040 wrote to memory of 4788	6040	cmd.exe	87
PID 6040 wrote to memory of 4788	6040	cmd.exe	87
PID 6040 wrote to memory of 4788	6040	cmd.exe	87

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3284
- 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:5384
- - 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:3300
- - 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:3964
- - C:\Windows\SysWOW64\schtasks.exe
    "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\bhTHlT" /XML "C:\Users\Admin\AppData\Local\Temp\tmpD7F1.tmp"
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:3788
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe
    "C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe"
    3⤵
    PID:4424
- - 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:4300
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\SysWOW64\cmd.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:6040
- - 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:4788

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
d0c46cad6c0778401e21910bd6b56b70

SHA1
7be418951ea96326aca445b8dfe449b2bfa0dca6

SHA256
9600b3fdf0565ccb49e21656aa4b24d7c18f776bfd04d9ee984b134707550f02

SHA512
057531b468f7fbbb2175a696a8aab274dec0d17d9f71df309edcff35e064f3378050066a3df47ccd03048fac461594ec75e3d4fe64f9dd79949d129f51e02949

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_d2fua3bn.ytt.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmpD7F1.tmp

Filesize
1KB

MD5
f12cda8d45494f385bfb062fa46744de

SHA1
22aa70b21dbf77ded9b32980db89865632d03539

SHA256
ec84200429604363759ba58ab1401021b1f0f980c33543b89b4e226d9c132e92

SHA512
2e8923d3c0fc559b072649298d44e27c2f092908bb6380bfc7c2b6da0bcebafe8c6f523f076302d0640944526f495ab38600ecd80652909abeb60fe0c0507d58

Download Submit
memory/3284-89-0x00000000043E0000-0x0000000004490000-memory.dmp

Filesize
704KB

Download
memory/3300-48-0x0000000006220000-0x000000000623E000-memory.dmp

Filesize
120KB

Download
memory/3300-22-0x0000000005CD0000-0x0000000005D36000-memory.dmp

Filesize
408KB

Download
memory/3300-84-0x0000000074390000-0x0000000074B41000-memory.dmp

Filesize
7.7MB

Download
memory/3300-21-0x0000000005C60000-0x0000000005CC6000-memory.dmp

Filesize
408KB

Download
memory/3300-77-0x00000000077C0000-0x00000000077D5000-memory.dmp

Filesize
84KB

Download
memory/3300-78-0x00000000078C0000-0x00000000078DA000-memory.dmp

Filesize
104KB

Download
memory/3300-74-0x0000000007800000-0x0000000007896000-memory.dmp

Filesize
600KB

Download
memory/3300-15-0x0000000004DA0000-0x0000000004DD6000-memory.dmp

Filesize
216KB

Download
memory/3300-17-0x0000000005410000-0x0000000005A3A000-memory.dmp

Filesize
6.2MB

Download
memory/3300-16-0x0000000074390000-0x0000000074B41000-memory.dmp

Filesize
7.7MB

Download
memory/3300-18-0x0000000074390000-0x0000000074B41000-memory.dmp

Filesize
7.7MB

Download
memory/3300-62-0x0000000074C40000-0x0000000074C8C000-memory.dmp

Filesize
304KB

Download
memory/3300-20-0x0000000005BC0000-0x0000000005BE2000-memory.dmp

Filesize
136KB

Download
memory/3300-49-0x0000000006270000-0x00000000062BC000-memory.dmp

Filesize
304KB

Download
memory/3300-44-0x0000000074390000-0x0000000074B41000-memory.dmp

Filesize
7.7MB

Download
memory/3964-28-0x0000000074390000-0x0000000074B41000-memory.dmp

Filesize
7.7MB

Download
memory/3964-72-0x0000000007280000-0x000000000729A000-memory.dmp

Filesize
104KB

Download
memory/3964-45-0x0000000074390000-0x0000000074B41000-memory.dmp

Filesize
7.7MB

Download
memory/3964-83-0x0000000074390000-0x0000000074B41000-memory.dmp

Filesize
7.7MB

Download
memory/3964-76-0x00000000074C0000-0x00000000074CE000-memory.dmp

Filesize
56KB

Download
memory/3964-75-0x0000000007490000-0x00000000074A1000-memory.dmp

Filesize
68KB

Download
memory/3964-73-0x0000000007300000-0x000000000730A000-memory.dmp

Filesize
40KB

Download
memory/3964-71-0x00000000078D0000-0x0000000007F4A000-memory.dmp

Filesize
6.5MB

Download
memory/3964-32-0x0000000074390000-0x0000000074B41000-memory.dmp

Filesize
7.7MB

Download
memory/3964-79-0x00000000075C0000-0x00000000075C8000-memory.dmp

Filesize
32KB

Download
memory/3964-60-0x0000000006F30000-0x0000000006F4E000-memory.dmp

Filesize
120KB

Download
memory/3964-61-0x0000000007150000-0x00000000071F4000-memory.dmp

Filesize
656KB

Download
memory/3964-51-0x0000000074C40000-0x0000000074C8C000-memory.dmp

Filesize
304KB

Download
memory/3964-50-0x0000000006EF0000-0x0000000006F24000-memory.dmp

Filesize
208KB

Download
memory/3964-41-0x0000000005A60000-0x0000000005DB7000-memory.dmp

Filesize
3.3MB

Download
memory/4300-42-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/5384-7-0x0000000005CD0000-0x0000000005CE2000-memory.dmp

Filesize
72KB

Download
memory/5384-2-0x0000000005FA0000-0x0000000006546000-memory.dmp

Filesize
5.6MB

Download
memory/5384-10-0x00000000087E0000-0x0000000008858000-memory.dmp

Filesize
480KB

Download
memory/5384-3-0x00000000059F0000-0x0000000005A82000-memory.dmp

Filesize
584KB

Download
memory/5384-6-0x0000000074390000-0x0000000074B41000-memory.dmp

Filesize
7.7MB

Download
memory/5384-9-0x0000000074390000-0x0000000074B41000-memory.dmp

Filesize
7.7MB

Download
memory/5384-0-0x000000007439E000-0x000000007439F000-memory.dmp

Filesize
4KB

Download
memory/5384-47-0x0000000074390000-0x0000000074B41000-memory.dmp

Filesize
7.7MB

Download
memory/5384-8-0x000000007439E000-0x000000007439F000-memory.dmp

Filesize
4KB

Download
memory/5384-5-0x0000000005990000-0x000000000599A000-memory.dmp

Filesize
40KB

Download
memory/5384-4-0x0000000005A90000-0x0000000005B2C000-memory.dmp

Filesize
624KB

Download
memory/5384-1-0x0000000000E50000-0x0000000000EEA000-memory.dmp

Filesize
616KB

Download
memory/6040-85-0x0000000000AE0000-0x0000000000B3D000-memory.dmp

Filesize
372KB

Download
memory/6040-87-0x0000000000A70000-0x0000000000A9F000-memory.dmp

Filesize
188KB

Download
memory/6040-86-0x0000000000AE0000-0x0000000000B3D000-memory.dmp

Filesize
372KB

Download