formbook | 885b8f641e85513c6b1144673619ff7aa00138b27c7d5431a265f4fc5b615b5c

Analysis

max time kernel
150s
max time network
132s
platform
windows10-2004_x64
resource
win10v2004-20250129-en
resource tags

arch:x64arch:x86image:win10v2004-20250129-enlocale:en-usos:windows10-2004-x64system
submitted
03/02/2025, 11:57

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General

Target

Payroll Overpayment_pdf.exe
Size

693KB
MD5

dc0cf0105719f618a1bc3559f392346c
SHA1

d3ce0d937f4014e94be5b4ed2f6aacfe36feb634
SHA256

68f9c7b5496c4d7699179f8c6f7a79626a03da699cd1986036f03af725218c45
SHA512

ce3b00a37c1450e87e819121c5370d324e631dcdbdfc01b0c4e4c76f340caa8e0bb1306a4f18a79b63955a3641f8f0ddcff61fda4be8fbab10b8a1d9a9dc8ded
SSDEEP

12288:JWzlWswecl9+1C/CiSxZcoTBPs/GZP6xvh0pbFOgLLYEAl4bhwSItprbkjkR:IweL1HicZfhs/J0XLLJiAWTrbd

Score

10^/10

formbook g43m discovery execution rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

Version

4.1

Campaign

g43m

Decoy

8328.shop

kronoseletronicos.online

pasanghoki3.homes

comitatogroscavallo.info

online-advertising-96729.bond

cpt1025.top

news-xzurufo.xyz

zycr.shop

loanplan.xyz

osipovs.digital

pgflow.cloud

alooytv17.shop

swirlstakedtawkee.cloud

sipoja.shop

senior-living-17169.bond

junepages.online

heavydutyweld.shop

smarminds.xyz

alistika.info

staplerl.shop

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/4452-46-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral2/memory/1804-95-0x0000000000190000-0x00000000001BF000-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
2444	powershell.exe
4776	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-1-5-21-2089655958-977706906-1981639424-1000\Control Panel\International\Geo\Nation	Payroll Overpayment_pdf.exe

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 5008 set thread context of 4452	5008	Payroll Overpayment_pdf.exe	94
PID 4452 set thread context of 3396	4452	RegSvcs.exe	55
PID 1804 set thread context of 3396	1804	msiexec.exe	55

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	Payroll Overpayment_pdf.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	msiexec.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Modifies registry class 1 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{1f3427c8-5c10-4210-aa03-2ee45287d668}\Instance\	Explorer.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
3588	schtasks.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
5008	Payroll Overpayment_pdf.exe
5008	Payroll Overpayment_pdf.exe
5008	Payroll Overpayment_pdf.exe
4776	powershell.exe
2444	powershell.exe
5008	Payroll Overpayment_pdf.exe
5008	Payroll Overpayment_pdf.exe
5008	Payroll Overpayment_pdf.exe
5008	Payroll Overpayment_pdf.exe
4776	powershell.exe
5008	Payroll Overpayment_pdf.exe
4452	RegSvcs.exe
4452	RegSvcs.exe
4452	RegSvcs.exe
4452	RegSvcs.exe
2444	powershell.exe
1804	msiexec.exe
1804	msiexec.exe
1804	msiexec.exe
1804	msiexec.exe
1804	msiexec.exe
1804	msiexec.exe
1804	msiexec.exe
1804	msiexec.exe
1804	msiexec.exe
1804	msiexec.exe
1804	msiexec.exe
1804	msiexec.exe
1804	msiexec.exe
1804	msiexec.exe
1804	msiexec.exe
1804	msiexec.exe
1804	msiexec.exe
1804	msiexec.exe
1804	msiexec.exe
1804	msiexec.exe
1804	msiexec.exe
1804	msiexec.exe
1804	msiexec.exe
1804	msiexec.exe
1804	msiexec.exe
1804	msiexec.exe
1804	msiexec.exe
1804	msiexec.exe
1804	msiexec.exe
1804	msiexec.exe
1804	msiexec.exe
1804	msiexec.exe
1804	msiexec.exe
1804	msiexec.exe
1804	msiexec.exe
1804	msiexec.exe
1804	msiexec.exe
1804	msiexec.exe
1804	msiexec.exe
1804	msiexec.exe
1804	msiexec.exe
1804	msiexec.exe
1804	msiexec.exe
1804	msiexec.exe
1804	msiexec.exe
1804	msiexec.exe
1804	msiexec.exe
1804	msiexec.exe

Suspicious behavior: MapViewOfSection 5 IoCs

pid	Process
4452	RegSvcs.exe
4452	RegSvcs.exe
4452	RegSvcs.exe
1804	msiexec.exe
1804	msiexec.exe

Suspicious use of AdjustPrivilegeToken 9 IoCs

description	pid	Process
Token: SeDebugPrivilege	5008	Payroll Overpayment_pdf.exe
Token: SeDebugPrivilege	4776	powershell.exe
Token: SeDebugPrivilege	2444	powershell.exe
Token: SeDebugPrivilege	4452	RegSvcs.exe
Token: SeShutdownPrivilege	3396	Explorer.EXE
Token: SeCreatePagefilePrivilege	3396	Explorer.EXE
Token: SeShutdownPrivilege	3396	Explorer.EXE
Token: SeCreatePagefilePrivilege	3396	Explorer.EXE
Token: SeDebugPrivilege	1804	msiexec.exe

Suspicious use of FindShellTrayWindow 2 IoCs

pid	Process
3396	Explorer.EXE
3396	Explorer.EXE

Suspicious use of UnmapMainImage 1 IoCs

pid	Process
3396	Explorer.EXE

Suspicious use of WriteProcessMemory 27 IoCs

description	pid	Process	procid_target
PID 5008 wrote to memory of 2444	5008	Payroll Overpayment_pdf.exe	86
PID 5008 wrote to memory of 2444	5008	Payroll Overpayment_pdf.exe	86
PID 5008 wrote to memory of 2444	5008	Payroll Overpayment_pdf.exe	86
PID 5008 wrote to memory of 4776	5008	Payroll Overpayment_pdf.exe	88
PID 5008 wrote to memory of 4776	5008	Payroll Overpayment_pdf.exe	88
PID 5008 wrote to memory of 4776	5008	Payroll Overpayment_pdf.exe	88
PID 5008 wrote to memory of 3588	5008	Payroll Overpayment_pdf.exe	90
PID 5008 wrote to memory of 3588	5008	Payroll Overpayment_pdf.exe	90
PID 5008 wrote to memory of 3588	5008	Payroll Overpayment_pdf.exe	90
PID 5008 wrote to memory of 4352	5008	Payroll Overpayment_pdf.exe	92
PID 5008 wrote to memory of 4352	5008	Payroll Overpayment_pdf.exe	92
PID 5008 wrote to memory of 4352	5008	Payroll Overpayment_pdf.exe	92
PID 5008 wrote to memory of 1328	5008	Payroll Overpayment_pdf.exe	93
PID 5008 wrote to memory of 1328	5008	Payroll Overpayment_pdf.exe	93
PID 5008 wrote to memory of 1328	5008	Payroll Overpayment_pdf.exe	93
PID 5008 wrote to memory of 4452	5008	Payroll Overpayment_pdf.exe	94
PID 5008 wrote to memory of 4452	5008	Payroll Overpayment_pdf.exe	94
PID 5008 wrote to memory of 4452	5008	Payroll Overpayment_pdf.exe	94
PID 5008 wrote to memory of 4452	5008	Payroll Overpayment_pdf.exe	94
PID 5008 wrote to memory of 4452	5008	Payroll Overpayment_pdf.exe	94
PID 5008 wrote to memory of 4452	5008	Payroll Overpayment_pdf.exe	94
PID 3396 wrote to memory of 1804	3396	Explorer.EXE	95
PID 3396 wrote to memory of 1804	3396	Explorer.EXE	95
PID 3396 wrote to memory of 1804	3396	Explorer.EXE	95
PID 1804 wrote to memory of 3360	1804	msiexec.exe	96
PID 1804 wrote to memory of 3360	1804	msiexec.exe	96
PID 1804 wrote to memory of 3360	1804	msiexec.exe	96

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Modifies registry class
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:3396
- C:\Users\Admin\AppData\Local\Temp\Payroll Overpayment_pdf.exe
  "C:\Users\Admin\AppData\Local\Temp\Payroll Overpayment_pdf.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:5008
- - 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\Payroll Overpayment_pdf.exe"
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:2444
- - C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\UyjTUL.exe"
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:4776
- - C:\Windows\SysWOW64\schtasks.exe
    "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\UyjTUL" /XML "C:\Users\Admin\AppData\Local\Temp\tmpB5C3.tmp"
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:3588
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
    "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe"
    3⤵
    PID:4352
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
    "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe"
    3⤵
    PID:1328
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
    "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe"
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious behavior: MapViewOfSection
    - Suspicious use of AdjustPrivilegeToken
    PID:4452
- C:\Windows\SysWOW64\msiexec.exe
  "C:\Windows\SysWOW64\msiexec.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:1804
- - C:\Windows\SysWOW64\cmd.exe
    /c del "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe"
    3⤵
    - System Location Discovery: System Language Discovery
    PID:3360

Network

MITRE ATT&CK Enterprise v15

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
4a35298d67049fe03c173b32f95a13f1

SHA1
ac8d5d5bfa3589616e9ba561cac27edcb3a7db6e

SHA256
b707ae2de4ce7b13e1736cb481f888a84ec74dd9bd88f40964b76733e41ffb6a

SHA512
558f75f42ec3b134478c158d7dc3cecd8f3d1374aaaf3d12bb5fcdb17d0d119a7eb3cae2e5a747b29d85208ea87c201747dc39cfbfc1711e672633d39ff2df7b

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_g2rx2pbi.3a0.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmpB5C3.tmp

Filesize
1KB

MD5
b96c36fe76dd2a6fea2f11560d36811c

SHA1
3353615e4da9827a5b523e427e7f22b7c19ff159

SHA256
8723387c4e72f66f5552e1e376d7cb1ee69025141fafb844217c75cb8d3ba191

SHA512
21af42609698eff65df28b9b9ed106c74b21c4350e298668ce8f88d2c276e5f007f606bf573bc1d54093b1ad6fe37702bbaef05484e45992761c24835f60fe3d

Download Submit
memory/1804-95-0x0000000000190000-0x00000000001BF000-memory.dmp

Filesize
188KB

Download
memory/1804-92-0x0000000000520000-0x0000000000532000-memory.dmp

Filesize
72KB

Download
memory/1804-94-0x0000000000520000-0x0000000000532000-memory.dmp

Filesize
72KB

Download
memory/1804-91-0x0000000000520000-0x0000000000532000-memory.dmp

Filesize
72KB

Download
memory/2444-81-0x0000000007120000-0x0000000007134000-memory.dmp

Filesize
80KB

Download
memory/2444-80-0x0000000007110000-0x000000000711E000-memory.dmp

Filesize
56KB

Download
memory/2444-52-0x0000000006B60000-0x0000000006B92000-memory.dmp

Filesize
200KB

Download
memory/2444-16-0x0000000004C90000-0x00000000052B8000-memory.dmp

Filesize
6.2MB

Download
memory/2444-15-0x0000000004600000-0x0000000004636000-memory.dmp

Filesize
216KB

Download
memory/2444-17-0x0000000074B70000-0x0000000075320000-memory.dmp

Filesize
7.7MB

Download
memory/2444-18-0x0000000074B70000-0x0000000075320000-memory.dmp

Filesize
7.7MB

Download
memory/2444-90-0x0000000074B70000-0x0000000075320000-memory.dmp

Filesize
7.7MB

Download
memory/2444-83-0x0000000007200000-0x0000000007208000-memory.dmp

Filesize
32KB

Download
memory/2444-53-0x0000000075420000-0x000000007546C000-memory.dmp

Filesize
304KB

Download
memory/2444-78-0x0000000007160000-0x00000000071F6000-memory.dmp

Filesize
600KB

Download
memory/2444-75-0x0000000007520000-0x0000000007B9A000-memory.dmp

Filesize
6.5MB

Download
memory/2444-76-0x0000000006EE0000-0x0000000006EFA000-memory.dmp

Filesize
104KB

Download
memory/2444-74-0x0000000006BA0000-0x0000000006C43000-memory.dmp

Filesize
652KB

Download
memory/2444-72-0x0000000006B20000-0x0000000006B3E000-memory.dmp

Filesize
120KB

Download
memory/2444-36-0x0000000074B70000-0x0000000075320000-memory.dmp

Filesize
7.7MB

Download
memory/3396-98-0x0000000007A20000-0x0000000007B79000-memory.dmp

Filesize
1.3MB

Download
memory/4452-46-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/4776-54-0x0000000075420000-0x000000007546C000-memory.dmp

Filesize
304KB

Download
memory/4776-20-0x00000000051F0000-0x0000000005256000-memory.dmp

Filesize
408KB

Download
memory/4776-51-0x0000000006200000-0x000000000624C000-memory.dmp

Filesize
304KB

Download
memory/4776-89-0x0000000074B70000-0x0000000075320000-memory.dmp

Filesize
7.7MB

Download
memory/4776-21-0x0000000005310000-0x0000000005376000-memory.dmp

Filesize
408KB

Download
memory/4776-22-0x0000000074B70000-0x0000000075320000-memory.dmp

Filesize
7.7MB

Download
memory/4776-28-0x0000000074B70000-0x0000000075320000-memory.dmp

Filesize
7.7MB

Download
memory/4776-34-0x0000000074B70000-0x0000000075320000-memory.dmp

Filesize
7.7MB

Download
memory/4776-29-0x0000000005BD0000-0x0000000005F24000-memory.dmp

Filesize
3.3MB

Download
memory/4776-82-0x00000000077D0000-0x00000000077EA000-memory.dmp

Filesize
104KB

Download
memory/4776-77-0x0000000007500000-0x000000000750A000-memory.dmp

Filesize
40KB

Download
memory/4776-19-0x00000000050D0000-0x00000000050F2000-memory.dmp

Filesize
136KB

Download
memory/4776-79-0x0000000007690000-0x00000000076A1000-memory.dmp

Filesize
68KB

Download
memory/4776-49-0x0000000006170000-0x000000000618E000-memory.dmp

Filesize
120KB

Download
memory/5008-0-0x0000000074B7E000-0x0000000074B7F000-memory.dmp

Filesize
4KB

Download
memory/5008-8-0x0000000074B7E000-0x0000000074B7F000-memory.dmp

Filesize
4KB

Download
memory/5008-7-0x0000000005C50000-0x0000000005C6E000-memory.dmp

Filesize
120KB

Download
memory/5008-6-0x00000000059F0000-0x0000000005A8C000-memory.dmp

Filesize
624KB

Download
memory/5008-48-0x0000000074B70000-0x0000000075320000-memory.dmp

Filesize
7.7MB

Download
memory/5008-9-0x0000000074B70000-0x0000000075320000-memory.dmp

Filesize
7.7MB

Download
memory/5008-5-0x0000000005930000-0x000000000593A000-memory.dmp

Filesize
40KB

Download
memory/5008-4-0x0000000074B70000-0x0000000075320000-memory.dmp

Filesize
7.7MB

Download
memory/5008-3-0x0000000005770000-0x0000000005802000-memory.dmp

Filesize
584KB

Download
memory/5008-2-0x0000000005C70000-0x0000000006214000-memory.dmp

Filesize
5.6MB

Download
memory/5008-1-0x0000000000D40000-0x0000000000DF0000-memory.dmp

Filesize
704KB

Download
memory/5008-10-0x0000000003170000-0x00000000031E8000-memory.dmp

Filesize
480KB

Download