formbook | a2edfc40b415990673011644ac81571701332292b243609a05a6e6e749afefa8

Analysis

max time kernel
300s
max time network
304s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
25-09-2024 06:57

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General

Target

INDEX#12.pdf.exe
Size

1.1MB
MD5

960216d2900ef8b404fbb7dd26c8fc21
SHA1

3121f25fe1c6a382a0a834aa2e048c1294f2ba94
SHA256

8b2b710bb4858bb4cee90137e9184542552b53cba6adce6c47192e4ed2853fb0
SHA512

a47e66adab3d64af573471aef37a2e946e70be9e6f748ec0fd4e95bc88a9de7eaea1011c9a273191c984abae49d37749d07d33cb17acb78ffc215d58fda27e1a
SSDEEP

24576:uRmJkcoQricOIQxiZY1iaCod6Url5cPk/RmRU7aJ1:7JZoQrbTFZY1iaCo6Up5EG7+

Score

10^/10

formbook k94g discovery rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

Version

4.1

Campaign

k94g

Decoy

nstandgoz.xyz

dhd-treatment-37310.bond

13s-braces-us-ze.fun

umdona.shop

96ph803ql.bond

kka9max.net

corporate-10.xyz

edicalassistance869840.online

lobalresources-bh.xyz

3145978.xyz

ovdaawebsite.online

etting-thailand.net

icloud.xyz

poxk.shop

25ks-ls72510.cyou

women.info

iwyrfbfvhv9.asia

luratu.xyz

ffordable-power-charger.today

edanuryilmaz.xyz

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
behavioral2/memory/4984-3-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral2/memory/4984-6-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral2/memory/604-11-0x00000000008E0000-0x000000000090F000-memory.dmp	formbook

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 2144 set thread context of 4984	2144	INDEX#12.pdf.exe	82
PID 4984 set thread context of 3376	4984	svchost.exe	56
PID 604 set thread context of 3376	604	cmstp.exe	56

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 3 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	INDEX#12.pdf.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmstp.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
4984	svchost.exe
4984	svchost.exe
4984	svchost.exe
4984	svchost.exe
604	cmstp.exe
604	cmstp.exe
604	cmstp.exe
604	cmstp.exe
604	cmstp.exe
604	cmstp.exe
604	cmstp.exe
604	cmstp.exe
604	cmstp.exe
604	cmstp.exe
604	cmstp.exe
604	cmstp.exe
604	cmstp.exe
604	cmstp.exe
604	cmstp.exe
604	cmstp.exe
604	cmstp.exe
604	cmstp.exe
604	cmstp.exe
604	cmstp.exe
604	cmstp.exe
604	cmstp.exe
604	cmstp.exe
604	cmstp.exe
604	cmstp.exe
604	cmstp.exe
604	cmstp.exe
604	cmstp.exe
604	cmstp.exe
604	cmstp.exe
604	cmstp.exe
604	cmstp.exe
604	cmstp.exe
604	cmstp.exe
604	cmstp.exe
604	cmstp.exe
604	cmstp.exe
604	cmstp.exe
604	cmstp.exe
604	cmstp.exe
604	cmstp.exe
604	cmstp.exe
604	cmstp.exe
604	cmstp.exe
604	cmstp.exe
604	cmstp.exe
604	cmstp.exe
604	cmstp.exe
604	cmstp.exe
604	cmstp.exe
604	cmstp.exe
604	cmstp.exe
604	cmstp.exe
604	cmstp.exe
604	cmstp.exe
604	cmstp.exe
604	cmstp.exe
604	cmstp.exe
604	cmstp.exe
604	cmstp.exe

Suspicious behavior: MapViewOfSection 6 IoCs

pid	Process
2144	INDEX#12.pdf.exe
4984	svchost.exe
4984	svchost.exe
4984	svchost.exe
604	cmstp.exe
604	cmstp.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

description	pid	Process
Token: SeDebugPrivilege	4984	svchost.exe
Token: SeDebugPrivilege	604	cmstp.exe
Token: SeShutdownPrivilege	3376	Explorer.EXE
Token: SeCreatePagefilePrivilege	3376	Explorer.EXE

Suspicious use of FindShellTrayWindow 6 IoCs

pid	Process
2144	INDEX#12.pdf.exe
2144	INDEX#12.pdf.exe
2144	INDEX#12.pdf.exe
2144	INDEX#12.pdf.exe
2144	INDEX#12.pdf.exe
2144	INDEX#12.pdf.exe

Suspicious use of SendNotifyMessage 6 IoCs

pid	Process
2144	INDEX#12.pdf.exe
2144	INDEX#12.pdf.exe
2144	INDEX#12.pdf.exe
2144	INDEX#12.pdf.exe
2144	INDEX#12.pdf.exe
2144	INDEX#12.pdf.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 2144 wrote to memory of 4984	2144	INDEX#12.pdf.exe	82
PID 2144 wrote to memory of 4984	2144	INDEX#12.pdf.exe	82
PID 2144 wrote to memory of 4984	2144	INDEX#12.pdf.exe	82
PID 2144 wrote to memory of 4984	2144	INDEX#12.pdf.exe	82
PID 3376 wrote to memory of 604	3376	Explorer.EXE	83
PID 3376 wrote to memory of 604	3376	Explorer.EXE	83
PID 3376 wrote to memory of 604	3376	Explorer.EXE	83
PID 604 wrote to memory of 2936	604	cmstp.exe	88
PID 604 wrote to memory of 2936	604	cmstp.exe	88
PID 604 wrote to memory of 2936	604	cmstp.exe	88

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3376
- C:\Users\Admin\AppData\Local\Temp\INDEX#12.pdf.exe
  "C:\Users\Admin\AppData\Local\Temp\INDEX#12.pdf.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of FindShellTrayWindow
  - Suspicious use of SendNotifyMessage
  - Suspicious use of WriteProcessMemory
  PID:2144
- - C:\Windows\SysWOW64\svchost.exe
    "C:\Users\Admin\AppData\Local\Temp\INDEX#12.pdf.exe"
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious behavior: MapViewOfSection
    - Suspicious use of AdjustPrivilegeToken
    PID:4984
- C:\Windows\SysWOW64\cmstp.exe
  "C:\Windows\SysWOW64\cmstp.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:604
- - C:\Windows\SysWOW64\cmd.exe
    /c del "C:\Windows\SysWOW64\svchost.exe"
    3⤵
    - System Location Discovery: System Language Discovery
    PID:2936

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/604-10-0x0000000000860000-0x0000000000876000-memory.dmp

Filesize
88KB

Download
memory/604-11-0x00000000008E0000-0x000000000090F000-memory.dmp

Filesize
188KB

Download
memory/604-9-0x0000000000860000-0x0000000000876000-memory.dmp

Filesize
88KB

Download
memory/2144-2-0x0000000004390000-0x0000000004790000-memory.dmp

Filesize
4.0MB

Download
memory/3376-8-0x0000000002500000-0x00000000026A5000-memory.dmp

Filesize
1.6MB

Download
memory/3376-12-0x0000000002500000-0x00000000026A5000-memory.dmp

Filesize
1.6MB

Download
memory/3376-16-0x0000000006D20000-0x0000000006DFE000-memory.dmp

Filesize
888KB

Download
memory/3376-17-0x0000000006D20000-0x0000000006DFE000-memory.dmp

Filesize
888KB

Download
memory/3376-19-0x0000000006D20000-0x0000000006DFE000-memory.dmp

Filesize
888KB

Download
memory/4984-6-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/4984-7-0x0000000000C00000-0x0000000000C14000-memory.dmp

Filesize
80KB

Download
memory/4984-4-0x0000000001400000-0x000000000174A000-memory.dmp

Filesize
3.3MB

Download
memory/4984-3-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download