formbook | 73c0f45b365444e09376cbea6f71b5f877af98eec65f809a6b078f206a6d4430

Analysis

max time kernel
149s
max time network
141s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
14-01-2025 20:08

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General

Target

File34456644pdf.exe
Size

650KB
MD5

d3b75622f7855cdb9f3eb8deaa37f75b
SHA1

6703d2b4e4f9c32224b9aae4a9c5a96844275de0
SHA256

73c0f45b365444e09376cbea6f71b5f877af98eec65f809a6b078f206a6d4430
SHA512

7e44ef7e8f50073083a161be1c80ffbeae7449273e08e64f0b7069abf8210a7c3d8d26a3164fe7540bb0c8105cf124cf61421c67c1fc68b1bd39a346a000b31c
SSDEEP

12288:+nApngDxqg/9CUfvN7uGDJHD8aHQHtpIKzTHucl7Xbqold4tpMRM:+n2ngcI9TfF7uGpDhHQNWK3VlLd4p

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 2 IoCs

rat

resource	yara_rule
behavioral2/memory/1984-47-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral2/memory/1280-93-0x0000000000E70000-0x0000000000E9F000-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
1940	powershell.exe
3692	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-1-5-21-4050598569-1597076380-177084960-1000\Control Panel\International\Geo\Nation	File34456644pdf.exe

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 2352 set thread context of 1984	2352	File34456644pdf.exe	95
PID 1984 set thread context of 3472	1984	RegSvcs.exe	56
PID 1280 set thread context of 3472	1280	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	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
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	File34456644pdf.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	powershell.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
3500	schtasks.exe

Suspicious behavior: EnumeratesProcesses 62 IoCs

pid	Process
2352	File34456644pdf.exe
1940	powershell.exe
3692	powershell.exe
2352	File34456644pdf.exe
1940	powershell.exe
1984	RegSvcs.exe
1984	RegSvcs.exe
1984	RegSvcs.exe
1984	RegSvcs.exe
3692	powershell.exe
1280	chkdsk.exe
1280	chkdsk.exe
1280	chkdsk.exe
1280	chkdsk.exe
1280	chkdsk.exe
1280	chkdsk.exe
1280	chkdsk.exe
1280	chkdsk.exe
1280	chkdsk.exe
1280	chkdsk.exe
1280	chkdsk.exe
1280	chkdsk.exe
1280	chkdsk.exe
1280	chkdsk.exe
1280	chkdsk.exe
1280	chkdsk.exe
1280	chkdsk.exe
1280	chkdsk.exe
1280	chkdsk.exe
1280	chkdsk.exe
1280	chkdsk.exe
1280	chkdsk.exe
1280	chkdsk.exe
1280	chkdsk.exe
1280	chkdsk.exe
1280	chkdsk.exe
1280	chkdsk.exe
1280	chkdsk.exe
1280	chkdsk.exe
1280	chkdsk.exe
1280	chkdsk.exe
1280	chkdsk.exe
1280	chkdsk.exe
1280	chkdsk.exe
1280	chkdsk.exe
1280	chkdsk.exe
1280	chkdsk.exe
1280	chkdsk.exe
1280	chkdsk.exe
1280	chkdsk.exe
1280	chkdsk.exe
1280	chkdsk.exe
1280	chkdsk.exe
1280	chkdsk.exe
1280	chkdsk.exe
1280	chkdsk.exe
1280	chkdsk.exe
1280	chkdsk.exe
1280	chkdsk.exe
1280	chkdsk.exe
1280	chkdsk.exe
1280	chkdsk.exe

Suspicious behavior: MapViewOfSection 5 IoCs

pid	Process
1984	RegSvcs.exe
1984	RegSvcs.exe
1984	RegSvcs.exe
1280	chkdsk.exe
1280	chkdsk.exe

Suspicious use of AdjustPrivilegeToken 9 IoCs

description	pid	Process
Token: SeDebugPrivilege	2352	File34456644pdf.exe
Token: SeDebugPrivilege	1940	powershell.exe
Token: SeDebugPrivilege	3692	powershell.exe
Token: SeDebugPrivilege	1984	RegSvcs.exe
Token: SeDebugPrivilege	1280	chkdsk.exe
Token: SeShutdownPrivilege	3472	Explorer.EXE
Token: SeCreatePagefilePrivilege	3472	Explorer.EXE
Token: SeShutdownPrivilege	3472	Explorer.EXE
Token: SeCreatePagefilePrivilege	3472	Explorer.EXE

Suspicious use of WriteProcessMemory 21 IoCs

description	pid	Process	procid_target
PID 2352 wrote to memory of 1940	2352	File34456644pdf.exe	89
PID 2352 wrote to memory of 1940	2352	File34456644pdf.exe	89
PID 2352 wrote to memory of 1940	2352	File34456644pdf.exe	89
PID 2352 wrote to memory of 3692	2352	File34456644pdf.exe	91
PID 2352 wrote to memory of 3692	2352	File34456644pdf.exe	91
PID 2352 wrote to memory of 3692	2352	File34456644pdf.exe	91
PID 2352 wrote to memory of 3500	2352	File34456644pdf.exe	93
PID 2352 wrote to memory of 3500	2352	File34456644pdf.exe	93
PID 2352 wrote to memory of 3500	2352	File34456644pdf.exe	93
PID 2352 wrote to memory of 1984	2352	File34456644pdf.exe	95
PID 2352 wrote to memory of 1984	2352	File34456644pdf.exe	95
PID 2352 wrote to memory of 1984	2352	File34456644pdf.exe	95
PID 2352 wrote to memory of 1984	2352	File34456644pdf.exe	95
PID 2352 wrote to memory of 1984	2352	File34456644pdf.exe	95
PID 2352 wrote to memory of 1984	2352	File34456644pdf.exe	95
PID 3472 wrote to memory of 1280	3472	Explorer.EXE	96
PID 3472 wrote to memory of 1280	3472	Explorer.EXE	96
PID 3472 wrote to memory of 1280	3472	Explorer.EXE	96
PID 1280 wrote to memory of 940	1280	chkdsk.exe	97
PID 1280 wrote to memory of 940	1280	chkdsk.exe	97
PID 1280 wrote to memory of 940	1280	chkdsk.exe	97

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3472
- C:\Users\Admin\AppData\Local\Temp\File34456644pdf.exe
  "C:\Users\Admin\AppData\Local\Temp\File34456644pdf.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:2352
- - 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\File34456644pdf.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\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\fGhkfgbyw.exe"
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:3692
- - C:\Windows\SysWOW64\schtasks.exe
    "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\fGhkfgbyw" /XML "C:\Users\Admin\AppData\Local\Temp\tmpEE19.tmp"
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:3500
- - 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:1984
- 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:1280
- - 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:940

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\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
2d2c2013247ddbfa19b53fcbc730aec4

SHA1
be578f62ba23c0e3f527a3e1d6585d4597588b07

SHA256
f20c7956fec6a80bb382c4f32b95fe1268b06d29398b1a914c4c2a2417267b9d

SHA512
8f39f785b74bb0d9d6e7fff6e51d7026089cc24cec6eb12031ab60829c8df6583152f3b0e982c65dd5aae09972cfa6cca68901ba6933cf7d0d3979c187f24bb7

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_bzw3wzem.qu1.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmpEE19.tmp

Filesize
1KB

MD5
3bb30547f0b2edb2cf0bd083c50a244b

SHA1
193e212b0bb9f46b6e777b50f52f70793116d09f

SHA256
3efff22c684a0d4ed49cd2d2308a2fba52221a60895edb3ba736e472c1158ab3

SHA512
8195e89ccc7610fe9bbc8166b72a38375e554007d2132aa741cf016309c5b3ba85e490ebd004e114a9fde5fd67a96d745d2d858872ba3212e7affe3c308fb3a2

Download Submit
memory/1280-80-0x00000000002A0000-0x00000000002AA000-memory.dmp

Filesize
40KB

Download
memory/1280-93-0x0000000000E70000-0x0000000000E9F000-memory.dmp

Filesize
188KB

Download
memory/1940-19-0x0000000074500000-0x0000000074CB0000-memory.dmp

Filesize
7.7MB

Download
memory/1940-79-0x0000000007D00000-0x0000000007D96000-memory.dmp

Filesize
600KB

Download
memory/1940-21-0x0000000074500000-0x0000000074CB0000-memory.dmp

Filesize
7.7MB

Download
memory/1940-68-0x00000000078D0000-0x00000000078DA000-memory.dmp

Filesize
40KB

Download
memory/1940-66-0x00000000081A0000-0x000000000881A000-memory.dmp

Filesize
6.5MB

Download
memory/1940-67-0x0000000007860000-0x000000000787A000-memory.dmp

Filesize
104KB

Download
memory/1940-65-0x0000000007760000-0x0000000007803000-memory.dmp

Filesize
652KB

Download
memory/1940-18-0x00000000058C0000-0x0000000005EE8000-memory.dmp

Filesize
6.2MB

Download
memory/1940-24-0x00000000060D0000-0x0000000006136000-memory.dmp

Filesize
408KB

Download
memory/1940-82-0x0000000007CA0000-0x0000000007CAE000-memory.dmp

Filesize
56KB

Download
memory/1940-52-0x0000000006B50000-0x0000000006B9C000-memory.dmp

Filesize
304KB

Download
memory/1940-50-0x0000000006740000-0x000000000675E000-memory.dmp

Filesize
120KB

Download
memory/1940-17-0x0000000002E20000-0x0000000002E56000-memory.dmp

Filesize
216KB

Download
memory/1940-23-0x0000000006060000-0x00000000060C6000-memory.dmp

Filesize
408KB

Download
memory/1940-22-0x0000000005880000-0x00000000058A2000-memory.dmp

Filesize
136KB

Download
memory/1940-92-0x0000000074500000-0x0000000074CB0000-memory.dmp

Filesize
7.7MB

Download
memory/1940-81-0x0000000007C70000-0x0000000007C81000-memory.dmp

Filesize
68KB

Download
memory/1940-64-0x0000000006CE0000-0x0000000006CFE000-memory.dmp

Filesize
120KB

Download
memory/1940-53-0x0000000006D30000-0x0000000006D62000-memory.dmp

Filesize
200KB

Download
memory/1940-54-0x0000000074DB0000-0x0000000074DFC000-memory.dmp

Filesize
304KB

Download
memory/1940-20-0x0000000074500000-0x0000000074CB0000-memory.dmp

Filesize
7.7MB

Download
memory/1984-47-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2352-11-0x0000000008380000-0x00000000083F8000-memory.dmp

Filesize
480KB

Download
memory/2352-7-0x0000000005EB0000-0x0000000005F4E000-memory.dmp

Filesize
632KB

Download
memory/2352-1-0x00000000007E0000-0x0000000000888000-memory.dmp

Filesize
672KB

Download
memory/2352-2-0x0000000005900000-0x0000000005EA4000-memory.dmp

Filesize
5.6MB

Download
memory/2352-3-0x0000000005350000-0x00000000053E2000-memory.dmp

Filesize
584KB

Download
memory/2352-12-0x000000000AB70000-0x000000000AC0C000-memory.dmp

Filesize
624KB

Download
memory/2352-0-0x000000007450E000-0x000000007450F000-memory.dmp

Filesize
4KB

Download
memory/2352-10-0x0000000074500000-0x0000000074CB0000-memory.dmp

Filesize
7.7MB

Download
memory/2352-4-0x00000000053F0000-0x0000000005744000-memory.dmp

Filesize
3.3MB

Download
memory/2352-9-0x000000007450E000-0x000000007450F000-memory.dmp

Filesize
4KB

Download
memory/2352-8-0x0000000005F90000-0x0000000005FAA000-memory.dmp

Filesize
104KB

Download
memory/2352-49-0x0000000074500000-0x0000000074CB0000-memory.dmp

Filesize
7.7MB

Download
memory/2352-6-0x0000000074500000-0x0000000074CB0000-memory.dmp

Filesize
7.7MB

Download
memory/2352-5-0x00000000052D0000-0x00000000052DA000-memory.dmp

Filesize
40KB

Download
memory/3472-98-0x00000000087D0000-0x00000000088EE000-memory.dmp

Filesize
1.1MB

Download
memory/3692-83-0x0000000007E70000-0x0000000007E84000-memory.dmp

Filesize
80KB

Download
memory/3692-84-0x0000000007F70000-0x0000000007F8A000-memory.dmp

Filesize
104KB

Download
memory/3692-85-0x0000000007F50000-0x0000000007F58000-memory.dmp

Filesize
32KB

Download
memory/3692-88-0x0000000074500000-0x0000000074CB0000-memory.dmp

Filesize
7.7MB

Download
memory/3692-69-0x0000000074DB0000-0x0000000074DFC000-memory.dmp

Filesize
304KB

Download
memory/3692-25-0x0000000074500000-0x0000000074CB0000-memory.dmp

Filesize
7.7MB

Download
memory/3692-36-0x0000000074500000-0x0000000074CB0000-memory.dmp

Filesize
7.7MB

Download
memory/3692-42-0x0000000074500000-0x0000000074CB0000-memory.dmp

Filesize
7.7MB

Download