formbook | 3ed5ac09ba40f97e597597369bab0d72d444f2a2a449cddf9ff4e86b31802130

General

Target

N°DEM241126.exe
Size

677KB
MD5

a3cb1b29866aaee19b2281f5dd58d19a
SHA1

cb21a2d54fcfe1862c5521728060a2aceaeb9d61
SHA256

562fb4a84dcb45e2f2266193250ce88e92bc7b8f270868fe10157a6c56de0c33
SHA512

f0da99cde645481fa64c59448b837a0d79e91de77fe6b3f1edcfd0684f24024b0c16e262a86c8447c626da7ea2b772bca3d6062c1fdfb5be97f4121dfd35e1c3
SSDEEP

12288:mnCb+eCSmuuhAfKogUAECK6yydxD0WFtw8feQSxNhQa6y69I3vk51t:muCnqbAO6rD0WO/aZt

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 3 IoCs

rat

Processes:

resource	yara_rule
behavioral1/memory/2804-13-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral1/memory/2804-16-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral1/memory/2840-23-0x00000000000C0000-0x00000000000EF000-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

Processes:

powershell.exe

pid	Process
2808	powershell.exe

Deletes itself 1 IoCs

Processes:

cmd.exe

pid	Process
2616	cmd.exe

Suspicious use of SetThreadContext 3 IoCs

Processes:

N°DEM241126.exeN°DEM241126.execmmon32.exe

description	pid	Process	procid_target
PID 376 set thread context of 2804	376	N°DEM241126.exe	31
PID 2804 set thread context of 1320	2804	N°DEM241126.exe	21
PID 2840 set thread context of 1320	2840	cmmon32.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

Processes:

powershell.execmmon32.execmd.exeN°DEM241126.exe

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	powershell.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmmon32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	N°DEM241126.exe

Suspicious behavior: EnumeratesProcesses 28 IoCs

Processes:

N°DEM241126.exepowershell.execmmon32.exe

pid	Process
2804	N°DEM241126.exe
2804	N°DEM241126.exe
2808	powershell.exe
2840	cmmon32.exe
2840	cmmon32.exe
2840	cmmon32.exe
2840	cmmon32.exe
2840	cmmon32.exe
2840	cmmon32.exe
2840	cmmon32.exe
2840	cmmon32.exe
2840	cmmon32.exe
2840	cmmon32.exe
2840	cmmon32.exe
2840	cmmon32.exe
2840	cmmon32.exe
2840	cmmon32.exe
2840	cmmon32.exe
2840	cmmon32.exe
2840	cmmon32.exe
2840	cmmon32.exe
2840	cmmon32.exe
2840	cmmon32.exe
2840	cmmon32.exe
2840	cmmon32.exe
2840	cmmon32.exe
2840	cmmon32.exe
2840	cmmon32.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

Explorer.EXE

pid	Process
1320	Explorer.EXE

Suspicious behavior: MapViewOfSection 5 IoCs

Processes:

N°DEM241126.execmmon32.exe

pid	Process
2804	N°DEM241126.exe
2804	N°DEM241126.exe
2804	N°DEM241126.exe
2840	cmmon32.exe
2840	cmmon32.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

N°DEM241126.exepowershell.execmmon32.exe

description	pid	Process
Token: SeDebugPrivilege	2804	N°DEM241126.exe
Token: SeDebugPrivilege	2808	powershell.exe
Token: SeDebugPrivilege	2840	cmmon32.exe

Suspicious use of WriteProcessMemory 19 IoCs

Processes:

N°DEM241126.exeExplorer.EXEcmmon32.exe

description	pid	Process	procid_target
PID 376 wrote to memory of 2808	376	N°DEM241126.exe	30
PID 376 wrote to memory of 2808	376	N°DEM241126.exe	30
PID 376 wrote to memory of 2808	376	N°DEM241126.exe	30
PID 376 wrote to memory of 2808	376	N°DEM241126.exe	30
PID 376 wrote to memory of 2804	376	N°DEM241126.exe	31
PID 376 wrote to memory of 2804	376	N°DEM241126.exe	31
PID 376 wrote to memory of 2804	376	N°DEM241126.exe	31
PID 376 wrote to memory of 2804	376	N°DEM241126.exe	31
PID 376 wrote to memory of 2804	376	N°DEM241126.exe	31
PID 376 wrote to memory of 2804	376	N°DEM241126.exe	31
PID 376 wrote to memory of 2804	376	N°DEM241126.exe	31
PID 1320 wrote to memory of 2840	1320	Explorer.EXE	33
PID 1320 wrote to memory of 2840	1320	Explorer.EXE	33
PID 1320 wrote to memory of 2840	1320	Explorer.EXE	33
PID 1320 wrote to memory of 2840	1320	Explorer.EXE	33
PID 2840 wrote to memory of 2616	2840	cmmon32.exe	34
PID 2840 wrote to memory of 2616	2840	cmmon32.exe	34
PID 2840 wrote to memory of 2616	2840	cmmon32.exe	34
PID 2840 wrote to memory of 2616	2840	cmmon32.exe	34

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of WriteProcessMemory
PID:1320
- C:\Users\Admin\AppData\Local\Temp\N°DEM241126.exe
  "C:\Users\Admin\AppData\Local\Temp\N°DEM241126.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:376
- - 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\N°DEM241126.exe"
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:2808
- - C:\Users\Admin\AppData\Local\Temp\N°DEM241126.exe
    "C:\Users\Admin\AppData\Local\Temp\N°DEM241126.exe"
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious behavior: MapViewOfSection
    - Suspicious use of AdjustPrivilegeToken
    PID:2804
- C:\Windows\SysWOW64\cmmon32.exe
  "C:\Windows\SysWOW64\cmmon32.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:2840
- - C:\Windows\SysWOW64\cmd.exe
    /c del "C:\Users\Admin\AppData\Local\Temp\N°DEM241126.exe"
    3⤵
    - Deletes itself
    - System Location Discovery: System Language Discovery
    PID:2616

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

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Downloads

memory/376-1-0x0000000000DE0000-0x0000000000E90000-memory.dmp

Filesize
704KB

Download
memory/376-2-0x00000000744B0000-0x0000000074B9E000-memory.dmp

Filesize
6.9MB

Download
memory/376-3-0x0000000000720000-0x000000000073C000-memory.dmp

Filesize
112KB

Download
memory/376-4-0x00000000744BE000-0x00000000744BF000-memory.dmp

Filesize
4KB

Download
memory/376-5-0x00000000744B0000-0x0000000074B9E000-memory.dmp

Filesize
6.9MB

Download
memory/376-6-0x0000000005CD0000-0x0000000005D48000-memory.dmp

Filesize
480KB

Download
memory/376-19-0x00000000744B0000-0x0000000074B9E000-memory.dmp

Filesize
6.9MB

Download
memory/376-0-0x00000000744BE000-0x00000000744BF000-memory.dmp

Filesize
4KB

Download
memory/1320-18-0x0000000006C50000-0x0000000006D20000-memory.dmp

Filesize
832KB

Download
memory/1320-31-0x0000000007540000-0x00000000076AE000-memory.dmp

Filesize
1.4MB

Download
memory/1320-24-0x0000000006C50000-0x0000000006D20000-memory.dmp

Filesize
832KB

Download
memory/2804-8-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2804-14-0x0000000000A60000-0x0000000000D63000-memory.dmp

Filesize
3.0MB

Download
memory/2804-9-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2804-17-0x0000000000190000-0x00000000001A4000-memory.dmp

Filesize
80KB

Download
memory/2804-16-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2804-11-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2804-13-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2840-22-0x00000000007E0000-0x00000000007ED000-memory.dmp

Filesize
52KB

Download
memory/2840-23-0x00000000000C0000-0x00000000000EF000-memory.dmp

Filesize
188KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads