formbook | 8c3b7bab6d9c32f813aa49cc65578049f516dd8607f6b2b43fd1e696d5b86988

General

Target

8c3b7bab6d9c32f813aa49cc65578049f516dd8607f6b2b43fd1e696d5b86988.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 family
formbook

Formbook payload 1 IoCs

rat

resource	yara_rule
behavioral1/memory/2692-12-0x0000000000400000-0x000000000042F000-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
2928	powershell.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2680 set thread context of 2692	2680	8c3b7bab6d9c32f813aa49cc65578049f516dd8607f6b2b43fd1e696d5b86988.exe	31

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Program crash 1 IoCs

pid	pid_target	Process	procid_target
2868	2692	WerFault.exe	31

System Location Discovery: System Language Discovery 1 TTPs 3 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	8c3b7bab6d9c32f813aa49cc65578049f516dd8607f6b2b43fd1e696d5b86988.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	8c3b7bab6d9c32f813aa49cc65578049f516dd8607f6b2b43fd1e696d5b86988.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	powershell.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
2928	powershell.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2928	powershell.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 2680 wrote to memory of 2928	2680	8c3b7bab6d9c32f813aa49cc65578049f516dd8607f6b2b43fd1e696d5b86988.exe	30
PID 2680 wrote to memory of 2928	2680	8c3b7bab6d9c32f813aa49cc65578049f516dd8607f6b2b43fd1e696d5b86988.exe	30
PID 2680 wrote to memory of 2928	2680	8c3b7bab6d9c32f813aa49cc65578049f516dd8607f6b2b43fd1e696d5b86988.exe	30
PID 2680 wrote to memory of 2928	2680	8c3b7bab6d9c32f813aa49cc65578049f516dd8607f6b2b43fd1e696d5b86988.exe	30
PID 2680 wrote to memory of 2692	2680	8c3b7bab6d9c32f813aa49cc65578049f516dd8607f6b2b43fd1e696d5b86988.exe	31
PID 2680 wrote to memory of 2692	2680	8c3b7bab6d9c32f813aa49cc65578049f516dd8607f6b2b43fd1e696d5b86988.exe	31
PID 2680 wrote to memory of 2692	2680	8c3b7bab6d9c32f813aa49cc65578049f516dd8607f6b2b43fd1e696d5b86988.exe	31
PID 2680 wrote to memory of 2692	2680	8c3b7bab6d9c32f813aa49cc65578049f516dd8607f6b2b43fd1e696d5b86988.exe	31
PID 2680 wrote to memory of 2692	2680	8c3b7bab6d9c32f813aa49cc65578049f516dd8607f6b2b43fd1e696d5b86988.exe	31
PID 2680 wrote to memory of 2692	2680	8c3b7bab6d9c32f813aa49cc65578049f516dd8607f6b2b43fd1e696d5b86988.exe	31
PID 2680 wrote to memory of 2692	2680	8c3b7bab6d9c32f813aa49cc65578049f516dd8607f6b2b43fd1e696d5b86988.exe	31
PID 2692 wrote to memory of 2868	2692	8c3b7bab6d9c32f813aa49cc65578049f516dd8607f6b2b43fd1e696d5b86988.exe	33
PID 2692 wrote to memory of 2868	2692	8c3b7bab6d9c32f813aa49cc65578049f516dd8607f6b2b43fd1e696d5b86988.exe	33
PID 2692 wrote to memory of 2868	2692	8c3b7bab6d9c32f813aa49cc65578049f516dd8607f6b2b43fd1e696d5b86988.exe	33
PID 2692 wrote to memory of 2868	2692	8c3b7bab6d9c32f813aa49cc65578049f516dd8607f6b2b43fd1e696d5b86988.exe	33

C:\Users\Admin\AppData\Local\Temp\8c3b7bab6d9c32f813aa49cc65578049f516dd8607f6b2b43fd1e696d5b86988.exe
"C:\Users\Admin\AppData\Local\Temp\8c3b7bab6d9c32f813aa49cc65578049f516dd8607f6b2b43fd1e696d5b86988.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2680
- 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\8c3b7bab6d9c32f813aa49cc65578049f516dd8607f6b2b43fd1e696d5b86988.exe"
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2928
- C:\Users\Admin\AppData\Local\Temp\8c3b7bab6d9c32f813aa49cc65578049f516dd8607f6b2b43fd1e696d5b86988.exe
  "C:\Users\Admin\AppData\Local\Temp\8c3b7bab6d9c32f813aa49cc65578049f516dd8607f6b2b43fd1e696d5b86988.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2692
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 2692 -s 36
    3⤵
    - Program crash
    PID:2868

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/2680-0-0x000000007419E000-0x000000007419F000-memory.dmp

Filesize
4KB

Download
memory/2680-1-0x0000000000D60000-0x0000000000E28000-memory.dmp

Filesize
800KB

Download
memory/2680-2-0x0000000074190000-0x000000007487E000-memory.dmp

Filesize
6.9MB

Download
memory/2680-3-0x0000000000350000-0x0000000000362000-memory.dmp

Filesize
72KB

Download
memory/2680-4-0x000000007419E000-0x000000007419F000-memory.dmp

Filesize
4KB

Download
memory/2680-5-0x0000000074190000-0x000000007487E000-memory.dmp

Filesize
6.9MB

Download
memory/2680-6-0x0000000005330000-0x00000000053B8000-memory.dmp

Filesize
544KB

Download
memory/2680-13-0x0000000074190000-0x000000007487E000-memory.dmp

Filesize
6.9MB

Download
memory/2692-7-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2692-12-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2692-10-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2692-9-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download

Analysis

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