formbook | 1625bc28c0c1fd3e4375430f222944d92c2b31b2543b5c8703dc5463cd68d1e3

General

Target

ASA S27.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/2556-19-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral1/memory/3056-24-0x00000000000C0000-0x00000000000EF000-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

pid	Process
2720	powershell.exe

Deletes itself 1 IoCs

pid	Process
1068	cmd.exe

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 2432 set thread context of 2556	2432	ASA S27.exe	35
PID 2556 set thread context of 1260	2556	ASA S27.exe	21
PID 3056 set thread context of 1260	3056	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 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	schtasks.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	ASA S27.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	powershell.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
2880	schtasks.exe

Suspicious behavior: EnumeratesProcesses 30 IoCs

pid	Process
2556	ASA S27.exe
2556	ASA S27.exe
2720	powershell.exe
3056	wlanext.exe
3056	wlanext.exe
3056	wlanext.exe
3056	wlanext.exe
3056	wlanext.exe
3056	wlanext.exe
3056	wlanext.exe
3056	wlanext.exe
3056	wlanext.exe
3056	wlanext.exe
3056	wlanext.exe
3056	wlanext.exe
3056	wlanext.exe
3056	wlanext.exe
3056	wlanext.exe
3056	wlanext.exe
3056	wlanext.exe
3056	wlanext.exe
3056	wlanext.exe
3056	wlanext.exe
3056	wlanext.exe
3056	wlanext.exe
3056	wlanext.exe
3056	wlanext.exe
3056	wlanext.exe
3056	wlanext.exe
3056	wlanext.exe

Suspicious behavior: MapViewOfSection 5 IoCs

pid	Process
2556	ASA S27.exe
2556	ASA S27.exe
2556	ASA S27.exe
3056	wlanext.exe
3056	wlanext.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	2556	ASA S27.exe
Token: SeDebugPrivilege	2720	powershell.exe
Token: SeDebugPrivilege	3056	wlanext.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 2432 wrote to memory of 2720	2432	ASA S27.exe	31
PID 2432 wrote to memory of 2720	2432	ASA S27.exe	31
PID 2432 wrote to memory of 2720	2432	ASA S27.exe	31
PID 2432 wrote to memory of 2720	2432	ASA S27.exe	31
PID 2432 wrote to memory of 2880	2432	ASA S27.exe	33
PID 2432 wrote to memory of 2880	2432	ASA S27.exe	33
PID 2432 wrote to memory of 2880	2432	ASA S27.exe	33
PID 2432 wrote to memory of 2880	2432	ASA S27.exe	33
PID 2432 wrote to memory of 2556	2432	ASA S27.exe	35
PID 2432 wrote to memory of 2556	2432	ASA S27.exe	35
PID 2432 wrote to memory of 2556	2432	ASA S27.exe	35
PID 2432 wrote to memory of 2556	2432	ASA S27.exe	35
PID 2432 wrote to memory of 2556	2432	ASA S27.exe	35
PID 2432 wrote to memory of 2556	2432	ASA S27.exe	35
PID 2432 wrote to memory of 2556	2432	ASA S27.exe	35
PID 1260 wrote to memory of 3056	1260	Explorer.EXE	36
PID 1260 wrote to memory of 3056	1260	Explorer.EXE	36
PID 1260 wrote to memory of 3056	1260	Explorer.EXE	36
PID 1260 wrote to memory of 3056	1260	Explorer.EXE	36
PID 3056 wrote to memory of 1068	3056	wlanext.exe	37
PID 3056 wrote to memory of 1068	3056	wlanext.exe	37
PID 3056 wrote to memory of 1068	3056	wlanext.exe	37
PID 3056 wrote to memory of 1068	3056	wlanext.exe	37

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of WriteProcessMemory
PID:1260
- C:\Users\Admin\AppData\Local\Temp\ASA S27.exe
  "C:\Users\Admin\AppData\Local\Temp\ASA S27.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2432
- - 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:2720
- - C:\Windows\SysWOW64\schtasks.exe
    "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\qiBWfumYjtSah" /XML "C:\Users\Admin\AppData\Local\Temp\tmp1C57.tmp"
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:2880
- - C:\Users\Admin\AppData\Local\Temp\ASA S27.exe
    "C:\Users\Admin\AppData\Local\Temp\ASA S27.exe"
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious behavior: MapViewOfSection
    - Suspicious use of AdjustPrivilegeToken
    PID:2556
- 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:3056
- - C:\Windows\SysWOW64\cmd.exe
    /c del "C:\Users\Admin\AppData\Local\Temp\ASA S27.exe"
    3⤵
    - Deletes itself
    - System Location Discovery: System Language Discovery
    PID:1068

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\tmp1C57.tmp

Filesize
1KB

MD5
fa50bd67507fa1c35a4a884de516ecec

SHA1
073fad3bac901e68d16a80a909d414033e2e2e94

SHA256
42d9dc4a6099d80b4a767e1f6e025ce53a305396ef283b05389dc594f1422990

SHA512
7b7d4b361ffcd26388cd6833631429700d6ae87d9fd7d11a688554dda68a9fe338f463fd0be705016814b3b28ffb43929f85a4ebf4c19efa41b7256ce2797d72

Download Submit
memory/1260-30-0x00000000066F0000-0x0000000006862000-memory.dmp

Filesize
1.4MB

Download
memory/2432-20-0x00000000742A0000-0x000000007498E000-memory.dmp

Filesize
6.9MB

Download
memory/2432-0-0x00000000742AE000-0x00000000742AF000-memory.dmp

Filesize
4KB

Download
memory/2432-4-0x00000000742AE000-0x00000000742AF000-memory.dmp

Filesize
4KB

Download
memory/2432-5-0x00000000742A0000-0x000000007498E000-memory.dmp

Filesize
6.9MB

Download
memory/2432-6-0x0000000004FF0000-0x0000000005066000-memory.dmp

Filesize
472KB

Download
memory/2432-2-0x00000000742A0000-0x000000007498E000-memory.dmp

Filesize
6.9MB

Download
memory/2432-1-0x0000000001330000-0x00000000013E2000-memory.dmp

Filesize
712KB

Download
memory/2432-3-0x0000000000320000-0x0000000000330000-memory.dmp

Filesize
64KB

Download
memory/2556-18-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2556-16-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2556-19-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2556-15-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/3056-23-0x0000000000C60000-0x0000000000C76000-memory.dmp

Filesize
88KB

Download
memory/3056-24-0x00000000000C0000-0x00000000000EF000-memory.dmp

Filesize
188KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads