formbook | 1625bc28c0c1fd3e4375430f222944d92c2b31b2543b5c8703dc5463cd68d1e3

General

Target

ASAS27.exe
Size

692KB
MD5

c3c19eded0a05cdc8b8740d97ebfdccf
SHA1

506138ac626ce46c5ada87bf83d703270fe329d9
SHA256

1625bc28c0c1fd3e4375430f222944d92c2b31b2543b5c8703dc5463cd68d1e3
SHA512

d075626bbad97c960dc892164dee8110d5897203dfeeeed1314e0c3d0aa2e71b0a4cc18bad6d493054a2263a1d83c2e4c4f154d7556f0ff162185d6fccd96aa4
SSDEEP

12288:xYV2o24S0WnqLtlbylU47swoC7Xl9wfWOVoiAaUnnLODW15R:22HL0xLqoNC7sjpPULSgR

Score

10^/10

formbook h209 discovery execution rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

Version

4.1

Campaign

h209

Decoy

sbtstuff.site

omlyes.com

movershifting.com

gearballer.com

oketoto.pro

myringleader.com

lrcjc750s.xyz

ata2024.xyz

password-manager-89409.bond

aiassistanthub.net

changvolt.cfd

netino.site

wear-wale.com

omnipresenceagency.com

huangguan.ooo

propersonnelmedia.com

9332952.com

k3s.support

ciytrw.xyz

cb095.pro

Signatures

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

Formbook payload 2 IoCs

rat

resource	yara_rule
behavioral1/memory/2860-19-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral1/memory/2900-23-0x0000000000080000-0x00000000000AF000-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
2520	powershell.exe

Deletes itself 1 IoCs

pid	Process
2744	cmd.exe

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 2388 set thread context of 2860	2388	ASAS27.exe	35
PID 2860 set thread context of 1240	2860	ASAS27.exe	21
PID 2900 set thread context of 1240	2900	control.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 5 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	ASAS27.exe
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	control.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.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
2800	schtasks.exe

Suspicious behavior: EnumeratesProcesses 30 IoCs

pid	Process
2860	ASAS27.exe
2860	ASAS27.exe
2520	powershell.exe
2900	control.exe
2900	control.exe
2900	control.exe
2900	control.exe
2900	control.exe
2900	control.exe
2900	control.exe
2900	control.exe
2900	control.exe
2900	control.exe
2900	control.exe
2900	control.exe
2900	control.exe
2900	control.exe
2900	control.exe
2900	control.exe
2900	control.exe
2900	control.exe
2900	control.exe
2900	control.exe
2900	control.exe
2900	control.exe
2900	control.exe
2900	control.exe
2900	control.exe
2900	control.exe
2900	control.exe

Suspicious behavior: MapViewOfSection 5 IoCs

pid	Process
2860	ASAS27.exe
2860	ASAS27.exe
2860	ASAS27.exe
2900	control.exe
2900	control.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	2860	ASAS27.exe
Token: SeDebugPrivilege	2520	powershell.exe
Token: SeDebugPrivilege	2900	control.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 2388 wrote to memory of 2520	2388	ASAS27.exe	31
PID 2388 wrote to memory of 2520	2388	ASAS27.exe	31
PID 2388 wrote to memory of 2520	2388	ASAS27.exe	31
PID 2388 wrote to memory of 2520	2388	ASAS27.exe	31
PID 2388 wrote to memory of 2800	2388	ASAS27.exe	33
PID 2388 wrote to memory of 2800	2388	ASAS27.exe	33
PID 2388 wrote to memory of 2800	2388	ASAS27.exe	33
PID 2388 wrote to memory of 2800	2388	ASAS27.exe	33
PID 2388 wrote to memory of 2860	2388	ASAS27.exe	35
PID 2388 wrote to memory of 2860	2388	ASAS27.exe	35
PID 2388 wrote to memory of 2860	2388	ASAS27.exe	35
PID 2388 wrote to memory of 2860	2388	ASAS27.exe	35
PID 2388 wrote to memory of 2860	2388	ASAS27.exe	35
PID 2388 wrote to memory of 2860	2388	ASAS27.exe	35
PID 2388 wrote to memory of 2860	2388	ASAS27.exe	35
PID 1240 wrote to memory of 2900	1240	Explorer.EXE	36
PID 1240 wrote to memory of 2900	1240	Explorer.EXE	36
PID 1240 wrote to memory of 2900	1240	Explorer.EXE	36
PID 1240 wrote to memory of 2900	1240	Explorer.EXE	36
PID 2900 wrote to memory of 2744	2900	control.exe	37
PID 2900 wrote to memory of 2744	2900	control.exe	37
PID 2900 wrote to memory of 2744	2900	control.exe	37
PID 2900 wrote to memory of 2744	2900	control.exe	37

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of WriteProcessMemory
PID:1240
- C:\Users\Admin\AppData\Local\Temp\ASAS27.exe
  "C:\Users\Admin\AppData\Local\Temp\ASAS27.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2388
- - C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\qiBWfumYjtSah.exe"
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:2520
- - C:\Windows\SysWOW64\schtasks.exe
    "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\qiBWfumYjtSah" /XML "C:\Users\Admin\AppData\Local\Temp\tmpF9D9.tmp"
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:2800
- - C:\Users\Admin\AppData\Local\Temp\ASAS27.exe
    "C:\Users\Admin\AppData\Local\Temp\ASAS27.exe"
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious behavior: MapViewOfSection
    - Suspicious use of AdjustPrivilegeToken
    PID:2860
- C:\Windows\SysWOW64\control.exe
  "C:\Windows\SysWOW64\control.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:2900
- - C:\Windows\SysWOW64\cmd.exe
    /c del "C:\Users\Admin\AppData\Local\Temp\ASAS27.exe"
    3⤵
    - Deletes itself
    - System Location Discovery: System Language Discovery
    PID:2744

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1

T1059

PowerShell

1

T1059.001

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Persistence

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Privilege Escalation

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

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

C:\Users\Admin\AppData\Local\Temp\tmpF9D9.tmp

Filesize
1KB

MD5
337a233bbf9436f91cc5407f51a3dd99

SHA1
697039b118c453b484e1093c9f34fa061f9b949a

SHA256
7875d74c68b8b71674b7c565320d5913977255f858f8411494ae366f2e65880f

SHA512
a89be1956156c7e85f66f8cc49ac81d3c47ba36ae7d04cbfc0641c1dc6338343dd0fbcb85b94a5fd56254542c95888191a5c516193b3d0d3d319109f25831b85

Download Submit
memory/2388-6-0x0000000004770000-0x00000000047E6000-memory.dmp

Filesize
472KB

Download
memory/2388-21-0x0000000074EA0000-0x000000007558E000-memory.dmp

Filesize
6.9MB

Download
memory/2388-3-0x0000000000620000-0x0000000000630000-memory.dmp

Filesize
64KB

Download
memory/2388-4-0x0000000074EAE000-0x0000000074EAF000-memory.dmp

Filesize
4KB

Download
memory/2388-5-0x0000000074EA0000-0x000000007558E000-memory.dmp

Filesize
6.9MB

Download
memory/2388-0-0x0000000074EAE000-0x0000000074EAF000-memory.dmp

Filesize
4KB

Download
memory/2388-1-0x0000000000A80000-0x0000000000B32000-memory.dmp

Filesize
712KB

Download
memory/2388-2-0x0000000074EA0000-0x000000007558E000-memory.dmp

Filesize
6.9MB

Download
memory/2860-14-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2860-18-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2860-19-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2860-16-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2900-22-0x00000000005E0000-0x00000000005FF000-memory.dmp

Filesize
124KB

Download
memory/2900-23-0x0000000000080000-0x00000000000AF000-memory.dmp

Filesize
188KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads