formbook | 6ff413f117319047dd857d0a83ccc87d32a81a4343f4fd0625840f6b1a70dd2b

General

Target

PAGO_101024.exe
Size

773KB
MD5

fcd48a04f4f33f345261a97b86922349
SHA1

9cb919cacbca53efc79d4c2061f26c503d2927f9
SHA256

8c3b7bab6d9c32f813aa49cc65578049f516dd8607f6b2b43fd1e696d5b86988
SHA512

9b3537b7b73847078d045a0245780cc851cdd772d8f2fb88b95adc523f32d35f33aca8451135a43746d6691edd48bdd7f7f68fb447c401cf1c9f03543b1c905a
SSDEEP

12288:oMqWdd5yerVbCx3YNPvjH63AOFxAFrQJ4E2L/S6bSvTOwyXFQlz:pqWdHrVbCx3YNnja3A6uFO4bZ+iS

Score

10^/10

formbook bc01 discovery execution rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

Version

4.1

Campaign

bc01

Decoy

epatitis-treatment-26155.bond

52cy67sk.bond

nline-degree-6987776.world

ingxingdiandeng-2033.top

mberbreeze.cyou

48xc300mw.autos

obs-for-seniors-39582.bond

tpetersburg-3-tonn.online

egafon-parser.online

172jh.shop

ltraman.pro

bqfhnys.shop

ntercash24-cad.homes

uhtwister.cloud

alk-in-tubs-27353.bond

ucas-saaad.buzz

oko.events

8080713.xyz

refabricated-homes-74404.bond

inaa.boo

Signatures

Formbook
Formbook is a data stealing malware which is capable of stealing data.
trojan spyware stealer formbook

Formbook payload 3 IoCs

rat

resource	yara_rule
behavioral1/memory/2880-13-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral1/memory/2880-21-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral1/memory/2796-22-0x0000000000080000-0x00000000000AF000-memory.dmp	formbook

Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

execution

PowerShell

T1059.001

pid	Process
2836	powershell.exe

Deletes itself 1 IoCs

pid	Process
2628	cmd.exe

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 3040 set thread context of 2880	3040	PAGO_101024.exe	32
PID 2880 set thread context of 1200	2880	PAGO_101024.exe	21
PID 2796 set thread context of 1200	2796	wlanext.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 4 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	wlanext.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	PAGO_101024.exe

Suspicious behavior: EnumeratesProcesses 29 IoCs

pid	Process
2880	PAGO_101024.exe
2880	PAGO_101024.exe
2836	powershell.exe
2796	wlanext.exe
2796	wlanext.exe
2796	wlanext.exe
2796	wlanext.exe
2796	wlanext.exe
2796	wlanext.exe
2796	wlanext.exe
2796	wlanext.exe
2796	wlanext.exe
2796	wlanext.exe
2796	wlanext.exe
2796	wlanext.exe
2796	wlanext.exe
2796	wlanext.exe
2796	wlanext.exe
2796	wlanext.exe
2796	wlanext.exe
2796	wlanext.exe
2796	wlanext.exe
2796	wlanext.exe
2796	wlanext.exe
2796	wlanext.exe
2796	wlanext.exe
2796	wlanext.exe
2796	wlanext.exe
2796	wlanext.exe

Suspicious behavior: MapViewOfSection 5 IoCs

pid	Process
2880	PAGO_101024.exe
2880	PAGO_101024.exe
2880	PAGO_101024.exe
2796	wlanext.exe
2796	wlanext.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	2880	PAGO_101024.exe
Token: SeDebugPrivilege	2836	powershell.exe
Token: SeDebugPrivilege	2796	wlanext.exe

Suspicious use of WriteProcessMemory 19 IoCs

description	pid	Process	procid_target
PID 3040 wrote to memory of 2836	3040	PAGO_101024.exe	30
PID 3040 wrote to memory of 2836	3040	PAGO_101024.exe	30
PID 3040 wrote to memory of 2836	3040	PAGO_101024.exe	30
PID 3040 wrote to memory of 2836	3040	PAGO_101024.exe	30
PID 3040 wrote to memory of 2880	3040	PAGO_101024.exe	32
PID 3040 wrote to memory of 2880	3040	PAGO_101024.exe	32
PID 3040 wrote to memory of 2880	3040	PAGO_101024.exe	32
PID 3040 wrote to memory of 2880	3040	PAGO_101024.exe	32
PID 3040 wrote to memory of 2880	3040	PAGO_101024.exe	32
PID 3040 wrote to memory of 2880	3040	PAGO_101024.exe	32
PID 3040 wrote to memory of 2880	3040	PAGO_101024.exe	32
PID 1200 wrote to memory of 2796	1200	Explorer.EXE	33
PID 1200 wrote to memory of 2796	1200	Explorer.EXE	33
PID 1200 wrote to memory of 2796	1200	Explorer.EXE	33
PID 1200 wrote to memory of 2796	1200	Explorer.EXE	33
PID 2796 wrote to memory of 2628	2796	wlanext.exe	34
PID 2796 wrote to memory of 2628	2796	wlanext.exe	34
PID 2796 wrote to memory of 2628	2796	wlanext.exe	34
PID 2796 wrote to memory of 2628	2796	wlanext.exe	34

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of WriteProcessMemory
PID:1200
- C:\Users\Admin\AppData\Local\Temp\PAGO_101024.exe
  "C:\Users\Admin\AppData\Local\Temp\PAGO_101024.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:3040
- - 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\PAGO_101024.exe"
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:2836
- - C:\Users\Admin\AppData\Local\Temp\PAGO_101024.exe
    "C:\Users\Admin\AppData\Local\Temp\PAGO_101024.exe"
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious behavior: MapViewOfSection
    - Suspicious use of AdjustPrivilegeToken
    PID:2880
- C:\Windows\SysWOW64\wlanext.exe
  "C:\Windows\SysWOW64\wlanext.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:2796
- - C:\Windows\SysWOW64\cmd.exe
    /c del "C:\Users\Admin\AppData\Local\Temp\PAGO_101024.exe"
    3⤵
    - Deletes itself
    - System Location Discovery: System Language Discovery
    PID:2628

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1

T1059

PowerShell

1

T1059.001

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

1

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/1200-19-0x0000000002D00000-0x0000000002E00000-memory.dmp

Filesize
1024KB

Download
memory/2796-22-0x0000000000080000-0x00000000000AF000-memory.dmp

Filesize
188KB

Download
memory/2796-20-0x00000000001F0000-0x0000000000206000-memory.dmp

Filesize
88KB

Download
memory/2880-15-0x00000000008B0000-0x0000000000BB3000-memory.dmp

Filesize
3.0MB

Download
memory/2880-9-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2880-21-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2880-7-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2880-13-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2880-11-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/3040-14-0x0000000074AC0000-0x00000000751AE000-memory.dmp

Filesize
6.9MB

Download
memory/3040-4-0x0000000074ACE000-0x0000000074ACF000-memory.dmp

Filesize
4KB

Download
memory/3040-6-0x0000000004D50000-0x0000000004DD8000-memory.dmp

Filesize
544KB

Download
memory/3040-0-0x0000000074ACE000-0x0000000074ACF000-memory.dmp

Filesize
4KB

Download
memory/3040-3-0x0000000000220000-0x0000000000232000-memory.dmp

Filesize
72KB

Download
memory/3040-2-0x0000000074AC0000-0x00000000751AE000-memory.dmp

Filesize
6.9MB

Download
memory/3040-5-0x0000000074AC0000-0x00000000751AE000-memory.dmp

Filesize
6.9MB

Download
memory/3040-1-0x0000000000C40000-0x0000000000D08000-memory.dmp

Filesize
800KB

Download

Analysis

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