formbook | ea8cce203873c762292f08d1d461a3f38521f1e77bc175dd68b4fef76ceabd19

Analysis

max time kernel
149s
max time network
136s
platform
windows10-2004_x64
resource
win10v2004-20250314-en
resource tags

arch:x64arch:x86image:win10v2004-20250314-enlocale:en-usos:windows10-2004-x64system
submitted
17/04/2025, 08:41

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General

Target

OutstandingBacklogPaymentR00199.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
behavioral1/memory/5816-43-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral1/memory/5556-88-0x0000000000360000-0x000000000038F000-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
4864	powershell.exe
1940	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-1-5-21-83325578-304917428-1200496059-1000\Control Panel\International\Geo\Nation	OutstandingBacklogPaymentR00199.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 4744 set thread context of 5816	4744	OutstandingBacklogPaymentR00199.exe	102
PID 5816 set thread context of 3496	5816	vbc.exe	56
PID 5556 set thread context of 3496	5556	chkdsk.exe	56

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	OutstandingBacklogPaymentR00199.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	powershell.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	chkdsk.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.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

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
4512	schtasks.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
4744	OutstandingBacklogPaymentR00199.exe
4744	OutstandingBacklogPaymentR00199.exe
4744	OutstandingBacklogPaymentR00199.exe
4744	OutstandingBacklogPaymentR00199.exe
4864	powershell.exe
4744	OutstandingBacklogPaymentR00199.exe
4744	OutstandingBacklogPaymentR00199.exe
1940	powershell.exe
4744	OutstandingBacklogPaymentR00199.exe
5816	vbc.exe
5816	vbc.exe
5816	vbc.exe
5816	vbc.exe
4864	powershell.exe
1940	powershell.exe
5556	chkdsk.exe
5556	chkdsk.exe
5556	chkdsk.exe
5556	chkdsk.exe
5556	chkdsk.exe
5556	chkdsk.exe
5556	chkdsk.exe
5556	chkdsk.exe
5556	chkdsk.exe
5556	chkdsk.exe
5556	chkdsk.exe
5556	chkdsk.exe
5556	chkdsk.exe
5556	chkdsk.exe
5556	chkdsk.exe
5556	chkdsk.exe
5556	chkdsk.exe
5556	chkdsk.exe
5556	chkdsk.exe
5556	chkdsk.exe
5556	chkdsk.exe
5556	chkdsk.exe
5556	chkdsk.exe
5556	chkdsk.exe
5556	chkdsk.exe
5556	chkdsk.exe
5556	chkdsk.exe
5556	chkdsk.exe
5556	chkdsk.exe
5556	chkdsk.exe
5556	chkdsk.exe
5556	chkdsk.exe
5556	chkdsk.exe
5556	chkdsk.exe
5556	chkdsk.exe
5556	chkdsk.exe
5556	chkdsk.exe
5556	chkdsk.exe
5556	chkdsk.exe
5556	chkdsk.exe
5556	chkdsk.exe
5556	chkdsk.exe
5556	chkdsk.exe
5556	chkdsk.exe
5556	chkdsk.exe
5556	chkdsk.exe
5556	chkdsk.exe
5556	chkdsk.exe
5556	chkdsk.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
3496	Explorer.EXE

Suspicious behavior: MapViewOfSection 5 IoCs

pid	Process
5816	vbc.exe
5816	vbc.exe
5816	vbc.exe
5556	chkdsk.exe
5556	chkdsk.exe

Suspicious use of AdjustPrivilegeToken 9 IoCs

description	pid	Process
Token: SeDebugPrivilege	4744	OutstandingBacklogPaymentR00199.exe
Token: SeDebugPrivilege	4864	powershell.exe
Token: SeDebugPrivilege	1940	powershell.exe
Token: SeDebugPrivilege	5816	vbc.exe
Token: SeShutdownPrivilege	3496	Explorer.EXE
Token: SeCreatePagefilePrivilege	3496	Explorer.EXE
Token: SeShutdownPrivilege	3496	Explorer.EXE
Token: SeCreatePagefilePrivilege	3496	Explorer.EXE
Token: SeDebugPrivilege	5556	chkdsk.exe

Suspicious use of UnmapMainImage 1 IoCs

pid	Process
3496	Explorer.EXE

Suspicious use of WriteProcessMemory 24 IoCs

description	pid	Process	procid_target
PID 4744 wrote to memory of 4864	4744	OutstandingBacklogPaymentR00199.exe	95
PID 4744 wrote to memory of 4864	4744	OutstandingBacklogPaymentR00199.exe	95
PID 4744 wrote to memory of 4864	4744	OutstandingBacklogPaymentR00199.exe	95
PID 4744 wrote to memory of 1940	4744	OutstandingBacklogPaymentR00199.exe	97
PID 4744 wrote to memory of 1940	4744	OutstandingBacklogPaymentR00199.exe	97
PID 4744 wrote to memory of 1940	4744	OutstandingBacklogPaymentR00199.exe	97
PID 4744 wrote to memory of 4512	4744	OutstandingBacklogPaymentR00199.exe	99
PID 4744 wrote to memory of 4512	4744	OutstandingBacklogPaymentR00199.exe	99
PID 4744 wrote to memory of 4512	4744	OutstandingBacklogPaymentR00199.exe	99
PID 4744 wrote to memory of 4272	4744	OutstandingBacklogPaymentR00199.exe	101
PID 4744 wrote to memory of 4272	4744	OutstandingBacklogPaymentR00199.exe	101
PID 4744 wrote to memory of 4272	4744	OutstandingBacklogPaymentR00199.exe	101
PID 4744 wrote to memory of 5816	4744	OutstandingBacklogPaymentR00199.exe	102
PID 4744 wrote to memory of 5816	4744	OutstandingBacklogPaymentR00199.exe	102
PID 4744 wrote to memory of 5816	4744	OutstandingBacklogPaymentR00199.exe	102
PID 4744 wrote to memory of 5816	4744	OutstandingBacklogPaymentR00199.exe	102
PID 4744 wrote to memory of 5816	4744	OutstandingBacklogPaymentR00199.exe	102
PID 4744 wrote to memory of 5816	4744	OutstandingBacklogPaymentR00199.exe	102
PID 3496 wrote to memory of 5556	3496	Explorer.EXE	103
PID 3496 wrote to memory of 5556	3496	Explorer.EXE	103
PID 3496 wrote to memory of 5556	3496	Explorer.EXE	103
PID 5556 wrote to memory of 4200	5556	chkdsk.exe	104
PID 5556 wrote to memory of 4200	5556	chkdsk.exe	104
PID 5556 wrote to memory of 4200	5556	chkdsk.exe	104

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:3496
- C:\Users\Admin\AppData\Local\Temp\OutstandingBacklogPaymentR00199.exe
  "C:\Users\Admin\AppData\Local\Temp\OutstandingBacklogPaymentR00199.exe"
  2⤵
  - Checks computer location settings
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:4744
- - 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\OutstandingBacklogPaymentR00199.exe"
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:4864
- - 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:1940
- - C:\Windows\SysWOW64\schtasks.exe
    "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\bhTHlT" /XML "C:\Users\Admin\AppData\Local\Temp\tmpD3F9.tmp"
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:4512
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe
    "C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe"
    3⤵
    PID:4272
- - 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:5816
- C:\Windows\SysWOW64\chkdsk.exe
  "C:\Windows\SysWOW64\chkdsk.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Enumerates system info in registry
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:5556
- - 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:4200

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

Query Registry

T1012

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
968cb9309758126772781b83adb8a28f

SHA1
8da30e71accf186b2ba11da1797cf67f8f78b47c

SHA256
92099c10776bb7e3f2a8d1b82d4d40d0c4627e4f1bf754a6e58dfd2c2e97042a

SHA512
4bd50732f8af4d688d95999bddfd296115d7033ddc38f86c9fb1f47fde202bffa27e9088bebcaa3064ca946af2f5c1ca6cbde49d0907f0005c7ab42874515dd3

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

Filesize
18KB

MD5
8214d53596a35f69c61901e29cd56725

SHA1
5d06e3bc87d262dced0b611da740615c9a6b88a5

SHA256
03d24453d9368f8ccb8ecbe28851fdafef6bd13b2980cde6a39350d335ef6961

SHA512
70e99fc7812019bc0bd091e61d630ccbfb2cd0589b054ea720c67d66c92944ff1d5df978f994a4c1d43751b894ae8c8922ac2022c875d0fed1931c5fe5024059

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_ynsqnw43.n2x.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmpD3F9.tmp

Filesize
1KB

MD5
69337d0cef770739c8c1e731529d7e7d

SHA1
b9f7ec9704a37271cc32dd1a48e135dd353d8c06

SHA256
8528a07dbe33ad3cbb71a7b67dc7e1e9baac3a78dd769c22aad7171936c9c2e3

SHA512
a28e58f2f4c2a9933f31830c5382d29dd0db98e798f737d33aefe3ba21b574f5893835e1d85d415d61789ee49e4d409303287c2a8878feee55c99aadde636126

Download Submit
memory/1940-49-0x0000000007780000-0x00000000077B2000-memory.dmp

Filesize
200KB

Download
memory/1940-72-0x0000000008150000-0x00000000087CA000-memory.dmp

Filesize
6.5MB

Download
memory/1940-42-0x00000000061E0000-0x0000000006534000-memory.dmp

Filesize
3.3MB

Download
memory/1940-73-0x0000000007B10000-0x0000000007B2A000-memory.dmp

Filesize
104KB

Download
memory/1940-77-0x0000000007D40000-0x0000000007D4E000-memory.dmp

Filesize
56KB

Download
memory/1940-79-0x0000000007E50000-0x0000000007E6A000-memory.dmp

Filesize
104KB

Download
memory/1940-80-0x0000000007E30000-0x0000000007E38000-memory.dmp

Filesize
32KB

Download
memory/1940-69-0x00000000079C0000-0x00000000079DE000-memory.dmp

Filesize
120KB

Download
memory/1940-50-0x0000000075620000-0x000000007566C000-memory.dmp

Filesize
304KB

Download
memory/3496-90-0x00000000094A0000-0x00000000095A9000-memory.dmp

Filesize
1.0MB

Download
memory/4744-6-0x0000000074D90000-0x0000000075540000-memory.dmp

Filesize
7.7MB

Download
memory/4744-10-0x0000000005F80000-0x0000000005FF8000-memory.dmp

Filesize
480KB

Download
memory/4744-9-0x0000000074D90000-0x0000000075540000-memory.dmp

Filesize
7.7MB

Download
memory/4744-8-0x0000000074D9E000-0x0000000074D9F000-memory.dmp

Filesize
4KB

Download
memory/4744-0-0x0000000074D9E000-0x0000000074D9F000-memory.dmp

Filesize
4KB

Download
memory/4744-7-0x0000000005080000-0x0000000005092000-memory.dmp

Filesize
72KB

Download
memory/4744-5-0x0000000004EE0000-0x0000000004EEA000-memory.dmp

Filesize
40KB

Download
memory/4744-4-0x0000000004F00000-0x0000000004F9C000-memory.dmp

Filesize
624KB

Download
memory/4744-3-0x0000000004D20000-0x0000000004DB2000-memory.dmp

Filesize
584KB

Download
memory/4744-46-0x0000000074D90000-0x0000000075540000-memory.dmp

Filesize
7.7MB

Download
memory/4744-2-0x00000000051D0000-0x0000000005774000-memory.dmp

Filesize
5.6MB

Download
memory/4744-1-0x00000000002C0000-0x000000000035A000-memory.dmp

Filesize
616KB

Download
memory/4864-74-0x0000000006DD0000-0x0000000006DDA000-memory.dmp

Filesize
40KB

Download
memory/4864-20-0x00000000052A0000-0x00000000052C2000-memory.dmp

Filesize
136KB

Download
memory/4864-56-0x0000000075620000-0x000000007566C000-memory.dmp

Filesize
304KB

Download
memory/4864-47-0x0000000005A30000-0x0000000005A4E000-memory.dmp

Filesize
120KB

Download
memory/4864-71-0x0000000006C20000-0x0000000006CC3000-memory.dmp

Filesize
652KB

Download
memory/4864-15-0x0000000002110000-0x0000000002146000-memory.dmp

Filesize
216KB

Download
memory/4864-22-0x0000000005340000-0x00000000053A6000-memory.dmp

Filesize
408KB

Download
memory/4864-23-0x00000000053B0000-0x0000000005416000-memory.dmp

Filesize
408KB

Download
memory/4864-75-0x0000000006FE0000-0x0000000007076000-memory.dmp

Filesize
600KB

Download
memory/4864-76-0x0000000006F60000-0x0000000006F71000-memory.dmp

Filesize
68KB

Download
memory/4864-21-0x0000000074D90000-0x0000000075540000-memory.dmp

Filesize
7.7MB

Download
memory/4864-78-0x0000000006FA0000-0x0000000006FB4000-memory.dmp

Filesize
80KB

Download
memory/4864-18-0x0000000074D90000-0x0000000075540000-memory.dmp

Filesize
7.7MB

Download
memory/4864-48-0x0000000005A70000-0x0000000005ABC000-memory.dmp

Filesize
304KB

Download
memory/4864-16-0x0000000074D90000-0x0000000075540000-memory.dmp

Filesize
7.7MB

Download
memory/4864-17-0x0000000004C30000-0x0000000005258000-memory.dmp

Filesize
6.2MB

Download
memory/4864-86-0x0000000074D90000-0x0000000075540000-memory.dmp

Filesize
7.7MB

Download
memory/5556-87-0x0000000000410000-0x000000000041A000-memory.dmp

Filesize
40KB

Download
memory/5556-88-0x0000000000360000-0x000000000038F000-memory.dmp

Filesize
188KB

Download
memory/5816-43-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download