formbook | 462338cc416f17bb48135254e384d49b87dde3f0c40e6c51a70ad7abdecfc231

General

Target

Dekont.pdf.exe
Size

634KB
MD5

ec3a89fb3f145a68a25284c99c0e714e
SHA1

37f1784b83b3951be610bcc0a88d729aba113f7e
SHA256

462338cc416f17bb48135254e384d49b87dde3f0c40e6c51a70ad7abdecfc231
SHA512

b8e98cd2b5e8739f51fa6762183b85b33c613a47f6942dfba9ed6ad6485608b939589fee899ea5550030dd2d4cc8d734c235ed15cc5ab62493a60b6235fb594e
SSDEEP

12288:OnCiPGlFpYu3pOT+thfn3tumqHZGRosZQve/5hMB2Oy4IZklPrbH6ec4kqNu4FbX:++pl3Dth/3t9qHbsus228I2nAqNusbNB

Score

10^/10

formbook m10i discovery execution rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

Version

4.1

Campaign

m10i

Decoy

rmani.today

ifebork.xyz

randovation.net

itchen-remodeling-65686.bond

himu.world

reverie.net

9038.top

rowahome.live

obility-scooters-63189.bond

iangchunqiu.top

yhd.fun

eniorsforseniors.biz

z9zs2.shop

kkjinni.buzz

22av373vu.autos

allnyy.fun

qst.digital

rcap.info

745.top

earfulabjectshirkwashclothe.cfd

Signatures

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

Formbook payload 3 IoCs

rat

resource	yara_rule
behavioral1/memory/3024-13-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral1/memory/3024-16-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral1/memory/2372-24-0x0000000000080000-0x00000000000AF000-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
2444	powershell.exe

Deletes itself 1 IoCs

pid	Process
2876	cmd.exe

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 2328 set thread context of 3024	2328	Dekont.pdf.exe	33
PID 3024 set thread context of 1208	3024	Dekont.pdf.exe	21
PID 2372 set thread context of 1208	2372	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 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

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Dekont.pdf.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	powershell.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	wlanext.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Suspicious behavior: EnumeratesProcesses 30 IoCs

pid	Process
3024	Dekont.pdf.exe
3024	Dekont.pdf.exe
2444	powershell.exe
2372	wlanext.exe
2372	wlanext.exe
2372	wlanext.exe
2372	wlanext.exe
2372	wlanext.exe
2372	wlanext.exe
2372	wlanext.exe
2372	wlanext.exe
2372	wlanext.exe
2372	wlanext.exe
2372	wlanext.exe
2372	wlanext.exe
2372	wlanext.exe
2372	wlanext.exe
2372	wlanext.exe
2372	wlanext.exe
2372	wlanext.exe
2372	wlanext.exe
2372	wlanext.exe
2372	wlanext.exe
2372	wlanext.exe
2372	wlanext.exe
2372	wlanext.exe
2372	wlanext.exe
2372	wlanext.exe
2372	wlanext.exe
2372	wlanext.exe

Suspicious behavior: MapViewOfSection 5 IoCs

pid	Process
3024	Dekont.pdf.exe
3024	Dekont.pdf.exe
3024	Dekont.pdf.exe
2372	wlanext.exe
2372	wlanext.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	3024	Dekont.pdf.exe
Token: SeDebugPrivilege	2444	powershell.exe
Token: SeDebugPrivilege	2372	wlanext.exe

Suspicious use of WriteProcessMemory 19 IoCs

description	pid	Process	procid_target
PID 2328 wrote to memory of 2444	2328	Dekont.pdf.exe	31
PID 2328 wrote to memory of 2444	2328	Dekont.pdf.exe	31
PID 2328 wrote to memory of 2444	2328	Dekont.pdf.exe	31
PID 2328 wrote to memory of 2444	2328	Dekont.pdf.exe	31
PID 2328 wrote to memory of 3024	2328	Dekont.pdf.exe	33
PID 2328 wrote to memory of 3024	2328	Dekont.pdf.exe	33
PID 2328 wrote to memory of 3024	2328	Dekont.pdf.exe	33
PID 2328 wrote to memory of 3024	2328	Dekont.pdf.exe	33
PID 2328 wrote to memory of 3024	2328	Dekont.pdf.exe	33
PID 2328 wrote to memory of 3024	2328	Dekont.pdf.exe	33
PID 2328 wrote to memory of 3024	2328	Dekont.pdf.exe	33
PID 1208 wrote to memory of 2372	1208	Explorer.EXE	34
PID 1208 wrote to memory of 2372	1208	Explorer.EXE	34
PID 1208 wrote to memory of 2372	1208	Explorer.EXE	34
PID 1208 wrote to memory of 2372	1208	Explorer.EXE	34
PID 2372 wrote to memory of 2876	2372	wlanext.exe	35
PID 2372 wrote to memory of 2876	2372	wlanext.exe	35
PID 2372 wrote to memory of 2876	2372	wlanext.exe	35
PID 2372 wrote to memory of 2876	2372	wlanext.exe	35

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of WriteProcessMemory
PID:1208
- C:\Users\Admin\AppData\Local\Temp\Dekont.pdf.exe
  "C:\Users\Admin\AppData\Local\Temp\Dekont.pdf.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2328
- - 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\Dekont.pdf.exe"
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:2444
- - C:\Users\Admin\AppData\Local\Temp\Dekont.pdf.exe
    "C:\Users\Admin\AppData\Local\Temp\Dekont.pdf.exe"
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious behavior: MapViewOfSection
    - Suspicious use of AdjustPrivilegeToken
    PID:3024
- 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:2372
- - C:\Windows\SysWOW64\cmd.exe
    /c del "C:\Users\Admin\AppData\Local\Temp\Dekont.pdf.exe"
    3⤵
    - Deletes itself
    - System Location Discovery: System Language Discovery
    PID:2876

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/1208-19-0x0000000006940000-0x0000000006A45000-memory.dmp

Filesize
1.0MB

Download
memory/1208-25-0x0000000006940000-0x0000000006A45000-memory.dmp

Filesize
1.0MB

Download
memory/1208-15-0x0000000003D10000-0x0000000003F10000-memory.dmp

Filesize
2.0MB

Download
memory/2328-5-0x0000000074240000-0x000000007492E000-memory.dmp

Filesize
6.9MB

Download
memory/2328-20-0x0000000074240000-0x000000007492E000-memory.dmp

Filesize
6.9MB

Download
memory/2328-0-0x000000007424E000-0x000000007424F000-memory.dmp

Filesize
4KB

Download
memory/2328-6-0x0000000005250000-0x00000000052C6000-memory.dmp

Filesize
472KB

Download
memory/2328-1-0x0000000000F40000-0x0000000000FE4000-memory.dmp

Filesize
656KB

Download
memory/2328-4-0x000000007424E000-0x000000007424F000-memory.dmp

Filesize
4KB

Download
memory/2328-2-0x0000000074240000-0x000000007492E000-memory.dmp

Filesize
6.9MB

Download
memory/2328-3-0x0000000000450000-0x0000000000468000-memory.dmp

Filesize
96KB

Download
memory/2372-23-0x0000000000760000-0x0000000000776000-memory.dmp

Filesize
88KB

Download
memory/2372-24-0x0000000000080000-0x00000000000AF000-memory.dmp

Filesize
188KB

Download
memory/3024-16-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/3024-9-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/3024-18-0x0000000000A20000-0x0000000000D23000-memory.dmp

Filesize
3.0MB

Download
memory/3024-17-0x0000000000190000-0x00000000001A4000-memory.dmp

Filesize
80KB

Download
memory/3024-11-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/3024-13-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/3024-7-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download

Analysis

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