formbook | e69d37275cc3b52a9d3a26f76073191ab8f59901781b5ef2859f33dee2252ddc

Analysis

max time kernel
146s
max time network
132s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
15/01/2025, 12:53

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General

Target

BankCertificateFilepdf00.exe
Size

724KB
MD5

595417bf40423929716d259aa6151e68
SHA1

3adf3f7db8401715e7b73c50e1feee8b034b2f88
SHA256

e69d37275cc3b52a9d3a26f76073191ab8f59901781b5ef2859f33dee2252ddc
SHA512

03122a9d4fa3b0426d3e10bb1700c6060300b391fd1fb49242c694485a753dc7e6a5d5edc9147f469774b04f3444bf77a3ebe930c68275456309b99ca50a1f60
SSDEEP

12288:sbnXloJNhQ/cWS7stu8HP1RhXtriB5VIenigsc5YK9ygCvSDH6Way22keYeJa9:eiJN+UVsw2P3tcnRYK6SDh4eE

Score

10^/10

formbook a02d discovery execution rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

Version

4.1

Campaign

a02d

Decoy

coplus.market

oofing-jobs-74429.bond

healchemists.xyz

oofcarpenternearme-jp.xyz

enewebsolutions.online

harepoint.legal

88977.club

omptables.xyz

eat-pumps-31610.bond

endown.graphics

amsexgirls.website

ovevibes.xyz

u-thiensu.online

yblinds.xyz

rumpchiefofstaff.store

erzog.fun

rrm.lat

agiclime.pro

agaviet59.shop

lbdoanhnhan.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
behavioral1/memory/2632-24-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral1/memory/2632-27-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral1/memory/264-30-0x0000000000080000-0x00000000000AF000-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
2780	powershell.exe
2240	powershell.exe

Suspicious use of SetThreadContext 4 IoCs

description	pid	Process	procid_target
PID 2316 set thread context of 2632	2316	BankCertificateFilepdf00.exe	36
PID 2632 set thread context of 1204	2632	RegSvcs.exe	21
PID 2632 set thread context of 1204	2632	RegSvcs.exe	21
PID 264 set thread context of 1204	264	chkdsk.exe	21

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	BankCertificateFilepdf00.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	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
2840	schtasks.exe

Suspicious behavior: EnumeratesProcesses 32 IoCs

pid	Process
2316	BankCertificateFilepdf00.exe
2240	powershell.exe
2780	powershell.exe
2316	BankCertificateFilepdf00.exe
2632	RegSvcs.exe
2632	RegSvcs.exe
2632	RegSvcs.exe
264	chkdsk.exe
264	chkdsk.exe
264	chkdsk.exe
264	chkdsk.exe
264	chkdsk.exe
264	chkdsk.exe
264	chkdsk.exe
264	chkdsk.exe
264	chkdsk.exe
264	chkdsk.exe
264	chkdsk.exe
264	chkdsk.exe
264	chkdsk.exe
264	chkdsk.exe
264	chkdsk.exe
264	chkdsk.exe
264	chkdsk.exe
264	chkdsk.exe
264	chkdsk.exe
264	chkdsk.exe
264	chkdsk.exe
264	chkdsk.exe
264	chkdsk.exe
264	chkdsk.exe
264	chkdsk.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
1204	Explorer.EXE

Suspicious behavior: MapViewOfSection 6 IoCs

pid	Process
2632	RegSvcs.exe
2632	RegSvcs.exe
2632	RegSvcs.exe
2632	RegSvcs.exe
264	chkdsk.exe
264	chkdsk.exe

Suspicious use of AdjustPrivilegeToken 5 IoCs

description	pid	Process
Token: SeDebugPrivilege	2316	BankCertificateFilepdf00.exe
Token: SeDebugPrivilege	2240	powershell.exe
Token: SeDebugPrivilege	2780	powershell.exe
Token: SeDebugPrivilege	2632	RegSvcs.exe
Token: SeDebugPrivilege	264	chkdsk.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2316 wrote to memory of 2240	2316	BankCertificateFilepdf00.exe	30
PID 2316 wrote to memory of 2240	2316	BankCertificateFilepdf00.exe	30
PID 2316 wrote to memory of 2240	2316	BankCertificateFilepdf00.exe	30
PID 2316 wrote to memory of 2240	2316	BankCertificateFilepdf00.exe	30
PID 2316 wrote to memory of 2780	2316	BankCertificateFilepdf00.exe	32
PID 2316 wrote to memory of 2780	2316	BankCertificateFilepdf00.exe	32
PID 2316 wrote to memory of 2780	2316	BankCertificateFilepdf00.exe	32
PID 2316 wrote to memory of 2780	2316	BankCertificateFilepdf00.exe	32
PID 2316 wrote to memory of 2840	2316	BankCertificateFilepdf00.exe	34
PID 2316 wrote to memory of 2840	2316	BankCertificateFilepdf00.exe	34
PID 2316 wrote to memory of 2840	2316	BankCertificateFilepdf00.exe	34
PID 2316 wrote to memory of 2840	2316	BankCertificateFilepdf00.exe	34
PID 2316 wrote to memory of 2632	2316	BankCertificateFilepdf00.exe	36
PID 2316 wrote to memory of 2632	2316	BankCertificateFilepdf00.exe	36
PID 2316 wrote to memory of 2632	2316	BankCertificateFilepdf00.exe	36
PID 2316 wrote to memory of 2632	2316	BankCertificateFilepdf00.exe	36
PID 2316 wrote to memory of 2632	2316	BankCertificateFilepdf00.exe	36
PID 2316 wrote to memory of 2632	2316	BankCertificateFilepdf00.exe	36
PID 2316 wrote to memory of 2632	2316	BankCertificateFilepdf00.exe	36
PID 2316 wrote to memory of 2632	2316	BankCertificateFilepdf00.exe	36
PID 2316 wrote to memory of 2632	2316	BankCertificateFilepdf00.exe	36
PID 2316 wrote to memory of 2632	2316	BankCertificateFilepdf00.exe	36
PID 1204 wrote to memory of 264	1204	Explorer.EXE	37
PID 1204 wrote to memory of 264	1204	Explorer.EXE	37
PID 1204 wrote to memory of 264	1204	Explorer.EXE	37
PID 1204 wrote to memory of 264	1204	Explorer.EXE	37
PID 264 wrote to memory of 1032	264	chkdsk.exe	38
PID 264 wrote to memory of 1032	264	chkdsk.exe	38
PID 264 wrote to memory of 1032	264	chkdsk.exe	38
PID 264 wrote to memory of 1032	264	chkdsk.exe	38

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of WriteProcessMemory
PID:1204
- C:\Users\Admin\AppData\Local\Temp\BankCertificateFilepdf00.exe
  "C:\Users\Admin\AppData\Local\Temp\BankCertificateFilepdf00.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2316
- - 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\BankCertificateFilepdf00.exe"
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:2240
- - C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\HPkPojK.exe"
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:2780
- - C:\Windows\SysWOW64\schtasks.exe
    "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\HPkPojK" /XML "C:\Users\Admin\AppData\Local\Temp\tmp7B86.tmp"
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:2840
- - 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:2632
- 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:264
- - 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:1032

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

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmp7B86.tmp

Filesize
1KB

MD5
dacefc26c90ef18dd09cc4ce4915e8dd

SHA1
c43a5025bdfd575b91de22f2d1ddbb89f7b43e33

SHA256
4cd6af3518b6b5c4ab2562d0ca2497a0d3e07e0f1a96d7de1f2e84c5b4d1e06f

SHA512
f55a41eae4463f6c9f559e8130e5fb73961a99af82b7c6bb360b202460898106d6fce8fcb02917f277b72cecf6b1f35f5d45fc8db2d10f816f8461f5a5f1766d

Download Submit
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\d93f411851d7c929.customDestinations-ms

Filesize
7KB

MD5
35a28ef1fa185f851cf8c4441a19c6a1

SHA1
b957e90f089bdbbe23c30721818e2d4baf217e0b

SHA256
f6ea8efe439ab1d40b63a04c01159faab3ffd111c407b043aa656290ea0051b9

SHA512
5ea66d40a26bcad3a92a6c292e45a060a7503a888f9475edbcede202402da3765eb66ef02eee308290be4fb5f9a9e6c78078d56d3eb6733fb145c6c90ebe46cd

Download Submit
memory/264-30-0x0000000000080000-0x00000000000AF000-memory.dmp

Filesize
188KB

Download
memory/264-29-0x00000000008C0000-0x00000000008C7000-memory.dmp

Filesize
28KB

Download
memory/1204-33-0x0000000006B40000-0x0000000006C65000-memory.dmp

Filesize
1.1MB

Download
memory/1204-28-0x0000000002AE0000-0x0000000002BE0000-memory.dmp

Filesize
1024KB

Download
memory/2316-4-0x000000007417E000-0x000000007417F000-memory.dmp

Filesize
4KB

Download
memory/2316-6-0x00000000004C0000-0x0000000000538000-memory.dmp

Filesize
480KB

Download
memory/2316-5-0x0000000074170000-0x000000007485E000-memory.dmp

Filesize
6.9MB

Download
memory/2316-25-0x0000000074170000-0x000000007485E000-memory.dmp

Filesize
6.9MB

Download
memory/2316-0-0x000000007417E000-0x000000007417F000-memory.dmp

Filesize
4KB

Download
memory/2316-3-0x0000000000560000-0x0000000000586000-memory.dmp

Filesize
152KB

Download
memory/2316-2-0x0000000074170000-0x000000007485E000-memory.dmp

Filesize
6.9MB

Download
memory/2316-1-0x0000000000A30000-0x0000000000AEC000-memory.dmp

Filesize
752KB

Download
memory/2632-24-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2632-23-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2632-21-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2632-19-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2632-27-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download