formbook | 0fa5bc9dee4c95c6fc9468aa5193eaba99fe766b28defce9e9878677b7c398bc

General

Target

PR2409-1513.pdf.exe
Size

798KB
MD5

6873a4a84ed3bb7f4554d1b9cf960d60
SHA1

dd6e5e47dc2deac13db80cdd8824beac7386832a
SHA256

f23856d737f4ba1f44e51aef81b4b122e7cf0ffeb40d5665895588e6921b21bc
SHA512

22710365911cb82a284415ab3c783c35abd89b206f48518043b77627f37b462da6153ab0b98c522340c3de691c7f9196c5d2656f1736d60fd7588de9a4a1d265
SSDEEP

12288:dMlll/c8Z6/bFN8pgsxelo6Qz5OI7IHBxiHoGhsHx/6otQYKzJ4wNsmy1:AcPJo6QuHBxyxSHg67wJXNs31

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/2772-11-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral1/memory/2772-15-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral1/memory/2768-22-0x00000000000D0000-0x00000000000FF000-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
2108	powershell.exe

Deletes itself 1 IoCs

pid	Process
3000	cmd.exe

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 1876 set thread context of 2772	1876	PR2409-1513.pdf.exe	32
PID 2772 set thread context of 1260	2772	PR2409-1513.pdf.exe	21
PID 2768 set thread context of 1260	2768	chkdsk.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	PR2409-1513.pdf.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	powershell.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	chkdsk.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Enumerates system info in registry 2 TTPs 1 IoCs

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\Identifier	chkdsk.exe

Suspicious behavior: EnumeratesProcesses 30 IoCs

pid	Process
2772	PR2409-1513.pdf.exe
2772	PR2409-1513.pdf.exe
2108	powershell.exe
2768	chkdsk.exe
2768	chkdsk.exe
2768	chkdsk.exe
2768	chkdsk.exe
2768	chkdsk.exe
2768	chkdsk.exe
2768	chkdsk.exe
2768	chkdsk.exe
2768	chkdsk.exe
2768	chkdsk.exe
2768	chkdsk.exe
2768	chkdsk.exe
2768	chkdsk.exe
2768	chkdsk.exe
2768	chkdsk.exe
2768	chkdsk.exe
2768	chkdsk.exe
2768	chkdsk.exe
2768	chkdsk.exe
2768	chkdsk.exe
2768	chkdsk.exe
2768	chkdsk.exe
2768	chkdsk.exe
2768	chkdsk.exe
2768	chkdsk.exe
2768	chkdsk.exe
2768	chkdsk.exe

Suspicious behavior: MapViewOfSection 5 IoCs

pid	Process
2772	PR2409-1513.pdf.exe
2772	PR2409-1513.pdf.exe
2772	PR2409-1513.pdf.exe
2768	chkdsk.exe
2768	chkdsk.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	2772	PR2409-1513.pdf.exe
Token: SeDebugPrivilege	2108	powershell.exe
Token: SeDebugPrivilege	2768	chkdsk.exe

Suspicious use of WriteProcessMemory 19 IoCs

description	pid	Process	procid_target
PID 1876 wrote to memory of 2108	1876	PR2409-1513.pdf.exe	30
PID 1876 wrote to memory of 2108	1876	PR2409-1513.pdf.exe	30
PID 1876 wrote to memory of 2108	1876	PR2409-1513.pdf.exe	30
PID 1876 wrote to memory of 2108	1876	PR2409-1513.pdf.exe	30
PID 1876 wrote to memory of 2772	1876	PR2409-1513.pdf.exe	32
PID 1876 wrote to memory of 2772	1876	PR2409-1513.pdf.exe	32
PID 1876 wrote to memory of 2772	1876	PR2409-1513.pdf.exe	32
PID 1876 wrote to memory of 2772	1876	PR2409-1513.pdf.exe	32
PID 1876 wrote to memory of 2772	1876	PR2409-1513.pdf.exe	32
PID 1876 wrote to memory of 2772	1876	PR2409-1513.pdf.exe	32
PID 1876 wrote to memory of 2772	1876	PR2409-1513.pdf.exe	32
PID 1260 wrote to memory of 2768	1260	Explorer.EXE	33
PID 1260 wrote to memory of 2768	1260	Explorer.EXE	33
PID 1260 wrote to memory of 2768	1260	Explorer.EXE	33
PID 1260 wrote to memory of 2768	1260	Explorer.EXE	33
PID 2768 wrote to memory of 3000	2768	chkdsk.exe	34
PID 2768 wrote to memory of 3000	2768	chkdsk.exe	34
PID 2768 wrote to memory of 3000	2768	chkdsk.exe	34
PID 2768 wrote to memory of 3000	2768	chkdsk.exe	34

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of WriteProcessMemory
PID:1260
- C:\Users\Admin\AppData\Local\Temp\PR2409-1513.pdf.exe
  "C:\Users\Admin\AppData\Local\Temp\PR2409-1513.pdf.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:1876
- - 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\PR2409-1513.pdf.exe"
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:2108
- - C:\Users\Admin\AppData\Local\Temp\PR2409-1513.pdf.exe
    "C:\Users\Admin\AppData\Local\Temp\PR2409-1513.pdf.exe"
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious behavior: MapViewOfSection
    - Suspicious use of AdjustPrivilegeToken
    PID:2772
- C:\Windows\SysWOW64\chkdsk.exe
  "C:\Windows\SysWOW64\chkdsk.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Enumerates system info in registry
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2768
- - C:\Windows\SysWOW64\cmd.exe
    /c del "C:\Users\Admin\AppData\Local\Temp\PR2409-1513.pdf.exe"
    3⤵
    - Deletes itself
    - System Location Discovery: System Language Discovery
    PID:3000

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

Query Registry

1

T1012

System Information Discovery

2

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/1260-14-0x0000000000010000-0x0000000000020000-memory.dmp

Filesize
64KB

Download
memory/1260-25-0x0000000005010000-0x0000000005136000-memory.dmp

Filesize
1.1MB

Download
memory/1260-17-0x0000000005010000-0x0000000005136000-memory.dmp

Filesize
1.1MB

Download
memory/1876-5-0x0000000074830000-0x0000000074F1E000-memory.dmp

Filesize
6.9MB

Download
memory/1876-18-0x0000000074830000-0x0000000074F1E000-memory.dmp

Filesize
6.9MB

Download
memory/1876-0-0x000000007483E000-0x000000007483F000-memory.dmp

Filesize
4KB

Download
memory/1876-6-0x0000000004B50000-0x0000000004BC6000-memory.dmp

Filesize
472KB

Download
memory/1876-1-0x0000000000900000-0x00000000009CE000-memory.dmp

Filesize
824KB

Download
memory/1876-4-0x000000007483E000-0x000000007483F000-memory.dmp

Filesize
4KB

Download
memory/1876-2-0x0000000074830000-0x0000000074F1E000-memory.dmp

Filesize
6.9MB

Download
memory/1876-3-0x0000000000450000-0x0000000000460000-memory.dmp

Filesize
64KB

Download
memory/2768-21-0x00000000001F0000-0x00000000001F7000-memory.dmp

Filesize
28KB

Download
memory/2768-22-0x00000000000D0000-0x00000000000FF000-memory.dmp

Filesize
188KB

Download
memory/2772-12-0x0000000000B60000-0x0000000000E63000-memory.dmp

Filesize
3.0MB

Download
memory/2772-7-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2772-16-0x0000000000180000-0x0000000000194000-memory.dmp

Filesize
80KB

Download
memory/2772-15-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2772-8-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2772-9-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2772-11-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download

Analysis

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