formbook | fa2a38ee7933b6eec66fed45d0f14e9cb4009ce04d5b56cf7e753af46626ada0

General

Target

fa2a38ee7933b6eec66fed45d0f14e9cb4009ce04d5b56cf7e753af46626ada0.exe
Size

607KB
MD5

10a0eb65b2183e25abb783e188eb69e0
SHA1

86d0693cb57425c210c8e4dc0b588db254fb6e65
SHA256

fa2a38ee7933b6eec66fed45d0f14e9cb4009ce04d5b56cf7e753af46626ada0
SHA512

0cdc358bb6c1781843d1d32c40659bc07eba8e99573f946be6c141de98906511aae598a04ea80f9aef229f8fcf755fc2d53475bed46f89277678072e75681fb5
SSDEEP

12288:s4y2kNXpOEaScZtB/dIvhwg5A14raeOesU6aW6jndC:sV2opOEaS0tB/iZwEY5beuAjdC

Score

10^/10

formbook by21 discovery execution rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

Version

4.1

Campaign

by21

Decoy

digitalillusions.net

changeblue25.com

kitchenwoow.com

grupocontigoalimentacion.com

iranabr.com

embodiedmagic.com

superstoreszone.com

apartments-for-rent-46883.bond

kelbagnole.com

rideskratchlab.com

a06kng.club

saddlebredallstars.xyz

filepd.com

kxetdf.asia

dl39yy.com

jackedsearch.com

exodusprofessionaldetailing.com

ecommerce-40144.bond

uh3b94g3pyczi9t.skin

dcmcc635i.xyz

Signatures

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

Formbook payload 1 IoCs

rat

resource	yara_rule
behavioral1/memory/3052-10-0x0000000000400000-0x000000000042F000-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
3064	powershell.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2376 set thread context of 3052	2376	fa2a38ee7933b6eec66fed45d0f14e9cb4009ce04d5b56cf7e753af46626ada0.exe	32

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 2 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	fa2a38ee7933b6eec66fed45d0f14e9cb4009ce04d5b56cf7e753af46626ada0.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	powershell.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
3052	fa2a38ee7933b6eec66fed45d0f14e9cb4009ce04d5b56cf7e753af46626ada0.exe
3064	powershell.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3064	powershell.exe

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 2376 wrote to memory of 3064	2376	fa2a38ee7933b6eec66fed45d0f14e9cb4009ce04d5b56cf7e753af46626ada0.exe	30
PID 2376 wrote to memory of 3064	2376	fa2a38ee7933b6eec66fed45d0f14e9cb4009ce04d5b56cf7e753af46626ada0.exe	30
PID 2376 wrote to memory of 3064	2376	fa2a38ee7933b6eec66fed45d0f14e9cb4009ce04d5b56cf7e753af46626ada0.exe	30
PID 2376 wrote to memory of 3064	2376	fa2a38ee7933b6eec66fed45d0f14e9cb4009ce04d5b56cf7e753af46626ada0.exe	30
PID 2376 wrote to memory of 3052	2376	fa2a38ee7933b6eec66fed45d0f14e9cb4009ce04d5b56cf7e753af46626ada0.exe	32
PID 2376 wrote to memory of 3052	2376	fa2a38ee7933b6eec66fed45d0f14e9cb4009ce04d5b56cf7e753af46626ada0.exe	32
PID 2376 wrote to memory of 3052	2376	fa2a38ee7933b6eec66fed45d0f14e9cb4009ce04d5b56cf7e753af46626ada0.exe	32
PID 2376 wrote to memory of 3052	2376	fa2a38ee7933b6eec66fed45d0f14e9cb4009ce04d5b56cf7e753af46626ada0.exe	32
PID 2376 wrote to memory of 3052	2376	fa2a38ee7933b6eec66fed45d0f14e9cb4009ce04d5b56cf7e753af46626ada0.exe	32
PID 2376 wrote to memory of 3052	2376	fa2a38ee7933b6eec66fed45d0f14e9cb4009ce04d5b56cf7e753af46626ada0.exe	32
PID 2376 wrote to memory of 3052	2376	fa2a38ee7933b6eec66fed45d0f14e9cb4009ce04d5b56cf7e753af46626ada0.exe	32

C:\Users\Admin\AppData\Local\Temp\fa2a38ee7933b6eec66fed45d0f14e9cb4009ce04d5b56cf7e753af46626ada0.exe
"C:\Users\Admin\AppData\Local\Temp\fa2a38ee7933b6eec66fed45d0f14e9cb4009ce04d5b56cf7e753af46626ada0.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2376
- 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\fa2a38ee7933b6eec66fed45d0f14e9cb4009ce04d5b56cf7e753af46626ada0.exe"
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:3064
- C:\Users\Admin\AppData\Local\Temp\fa2a38ee7933b6eec66fed45d0f14e9cb4009ce04d5b56cf7e753af46626ada0.exe
  "C:\Users\Admin\AppData\Local\Temp\fa2a38ee7933b6eec66fed45d0f14e9cb4009ce04d5b56cf7e753af46626ada0.exe"
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  PID:3052

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/2376-0-0x0000000073D5E000-0x0000000073D5F000-memory.dmp

Filesize
4KB

Download
memory/2376-1-0x0000000000FF0000-0x000000000108E000-memory.dmp

Filesize
632KB

Download
memory/2376-2-0x0000000073D50000-0x000000007443E000-memory.dmp

Filesize
6.9MB

Download
memory/2376-3-0x0000000000300000-0x0000000000316000-memory.dmp

Filesize
88KB

Download
memory/2376-4-0x00000000005B0000-0x00000000005BE000-memory.dmp

Filesize
56KB

Download
memory/2376-5-0x0000000000D50000-0x0000000000DC6000-memory.dmp

Filesize
472KB

Download
memory/2376-11-0x0000000073D50000-0x000000007443E000-memory.dmp

Filesize
6.9MB

Download
memory/3052-10-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/3052-8-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/3052-7-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/3052-6-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/3052-12-0x00000000009E0000-0x0000000000CE3000-memory.dmp

Filesize
3.0MB

Download

Analysis

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