formbook | 4da4d8e83255158a09663b9da8faaecae3a0a9175571aee37567f224cb34e694

Analysis

max time kernel
150s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
20-08-2024 06:27

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General

Target

CpuyfZYLGoDh27Y.exe
Size

687KB
MD5

a2ec87198a2b44d6de329181c2550e59
SHA1

fcde8f6052947da44d798d29011411b53fe6f62f
SHA256

4da4d8e83255158a09663b9da8faaecae3a0a9175571aee37567f224cb34e694
SHA512

f0c04730ce2b5097dfe904be5a66a61d7f8167fe54f16f197df1ac44fddfe4d19ff822f670da1683bb1b387140395c08a09ab711e4ccb829fde704cce4affaf3
SSDEEP

12288:NbCbCwgqaVoumEOvJNYqOQnp/P/dtf0xSEy/q2FgFtWX5+lECs4mjl7gCMpd6N0t:NGC/qaSumdvJLxj0TI7Ct9JWl7gCMpMU

Score

10^/10

formbook d16h discovery rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

Version

4.1

Campaign

d16h

Decoy

iki-graphy.online

l8z8c.vip

1709.asia

inematography-course-72246.bond

pis3noe2e.sbs

wernv.xyz

ovepepe.xyz

ama-online.world

ookmouse.fun

harkclothingdesigns.xyz

bbvvjuiqew.bond

sed-cars-93620.bond

esgateeganhe.shop

cekmeledak.info

ebulahorizon.buzz

peakers-92991.bond

essislotgoal16.top

hafi.biz

ichunyang.club

lrica.net

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/3696-12-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral2/memory/3696-17-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral2/memory/2560-22-0x0000000000ED0000-0x0000000000EFF000-memory.dmp	formbook

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 4556 set thread context of 3696	4556	CpuyfZYLGoDh27Y.exe	95
PID 3696 set thread context of 3444	3696	CpuyfZYLGoDh27Y.exe	56
PID 2560 set thread context of 3444	2560	help.exe	56

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	CpuyfZYLGoDh27Y.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	help.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Modifies registry class 2 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-656926755-4116854191-210765258-1000_Classes\CLSID\{018D5C66-4533-4307-9B53-224DE2ED1FE6}\Instance\	Explorer.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{4336a54d-038b-4685-ab02-99bb52d3fb8b}\Instance\	Explorer.EXE

Suspicious behavior: EnumeratesProcesses 56 IoCs

pid	Process
3696	CpuyfZYLGoDh27Y.exe
3696	CpuyfZYLGoDh27Y.exe
3696	CpuyfZYLGoDh27Y.exe
3696	CpuyfZYLGoDh27Y.exe
2560	help.exe
2560	help.exe
2560	help.exe
2560	help.exe
2560	help.exe
2560	help.exe
2560	help.exe
2560	help.exe
2560	help.exe
2560	help.exe
2560	help.exe
2560	help.exe
2560	help.exe
2560	help.exe
2560	help.exe
2560	help.exe
2560	help.exe
2560	help.exe
2560	help.exe
2560	help.exe
2560	help.exe
2560	help.exe
2560	help.exe
2560	help.exe
2560	help.exe
2560	help.exe
2560	help.exe
2560	help.exe
2560	help.exe
2560	help.exe
2560	help.exe
2560	help.exe
2560	help.exe
2560	help.exe
2560	help.exe
2560	help.exe
2560	help.exe
2560	help.exe
2560	help.exe
2560	help.exe
2560	help.exe
2560	help.exe
2560	help.exe
2560	help.exe
2560	help.exe
2560	help.exe
2560	help.exe
2560	help.exe
2560	help.exe
2560	help.exe
2560	help.exe
2560	help.exe

Suspicious behavior: MapViewOfSection 5 IoCs

pid	Process
3696	CpuyfZYLGoDh27Y.exe
3696	CpuyfZYLGoDh27Y.exe
3696	CpuyfZYLGoDh27Y.exe
2560	help.exe
2560	help.exe

Suspicious use of AdjustPrivilegeToken 14 IoCs

description	pid	Process
Token: SeDebugPrivilege	3696	CpuyfZYLGoDh27Y.exe
Token: SeDebugPrivilege	2560	help.exe
Token: SeShutdownPrivilege	3444	Explorer.EXE
Token: SeCreatePagefilePrivilege	3444	Explorer.EXE
Token: SeShutdownPrivilege	3444	Explorer.EXE
Token: SeCreatePagefilePrivilege	3444	Explorer.EXE
Token: SeShutdownPrivilege	3444	Explorer.EXE
Token: SeCreatePagefilePrivilege	3444	Explorer.EXE
Token: SeShutdownPrivilege	3444	Explorer.EXE
Token: SeCreatePagefilePrivilege	3444	Explorer.EXE
Token: SeShutdownPrivilege	3444	Explorer.EXE
Token: SeCreatePagefilePrivilege	3444	Explorer.EXE
Token: SeShutdownPrivilege	3444	Explorer.EXE
Token: SeCreatePagefilePrivilege	3444	Explorer.EXE

Suspicious use of UnmapMainImage 1 IoCs

pid	Process
3444	Explorer.EXE

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 4556 wrote to memory of 3696	4556	CpuyfZYLGoDh27Y.exe	95
PID 4556 wrote to memory of 3696	4556	CpuyfZYLGoDh27Y.exe	95
PID 4556 wrote to memory of 3696	4556	CpuyfZYLGoDh27Y.exe	95
PID 4556 wrote to memory of 3696	4556	CpuyfZYLGoDh27Y.exe	95
PID 4556 wrote to memory of 3696	4556	CpuyfZYLGoDh27Y.exe	95
PID 4556 wrote to memory of 3696	4556	CpuyfZYLGoDh27Y.exe	95
PID 3444 wrote to memory of 2560	3444	Explorer.EXE	96
PID 3444 wrote to memory of 2560	3444	Explorer.EXE	96
PID 3444 wrote to memory of 2560	3444	Explorer.EXE	96
PID 2560 wrote to memory of 4912	2560	help.exe	97
PID 2560 wrote to memory of 4912	2560	help.exe	97
PID 2560 wrote to memory of 4912	2560	help.exe	97

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Modifies registry class
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:3444
- C:\Users\Admin\AppData\Local\Temp\CpuyfZYLGoDh27Y.exe
  "C:\Users\Admin\AppData\Local\Temp\CpuyfZYLGoDh27Y.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:4556
- - C:\Users\Admin\AppData\Local\Temp\CpuyfZYLGoDh27Y.exe
    "C:\Users\Admin\AppData\Local\Temp\CpuyfZYLGoDh27Y.exe"
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious behavior: MapViewOfSection
    - Suspicious use of AdjustPrivilegeToken
    PID:3696
- C:\Windows\SysWOW64\help.exe
  "C:\Windows\SysWOW64\help.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:2560
- - C:\Windows\SysWOW64\cmd.exe
    /c del "C:\Users\Admin\AppData\Local\Temp\CpuyfZYLGoDh27Y.exe"
    3⤵
    - System Location Discovery: System Language Discovery
    PID:4912

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

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/2560-22-0x0000000000ED0000-0x0000000000EFF000-memory.dmp

Filesize
188KB

Download
memory/2560-20-0x0000000000670000-0x0000000000677000-memory.dmp

Filesize
28KB

Download
memory/2560-21-0x0000000000670000-0x0000000000677000-memory.dmp

Filesize
28KB

Download
memory/3444-19-0x0000000009330000-0x000000000944F000-memory.dmp

Filesize
1.1MB

Download
memory/3444-27-0x0000000009220000-0x00000000092CB000-memory.dmp

Filesize
684KB

Download
memory/3444-25-0x0000000009220000-0x00000000092CB000-memory.dmp

Filesize
684KB

Download
memory/3444-23-0x0000000009330000-0x000000000944F000-memory.dmp

Filesize
1.1MB

Download
memory/3696-12-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/3696-15-0x0000000001270000-0x00000000015BA000-memory.dmp

Filesize
3.3MB

Download
memory/3696-18-0x0000000000D70000-0x0000000000D84000-memory.dmp

Filesize
80KB

Download
memory/3696-17-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/4556-0-0x00000000752CE000-0x00000000752CF000-memory.dmp

Filesize
4KB

Download
memory/4556-8-0x00000000752C0000-0x0000000075A70000-memory.dmp

Filesize
7.7MB

Download
memory/4556-14-0x00000000752C0000-0x0000000075A70000-memory.dmp

Filesize
7.7MB

Download
memory/4556-11-0x0000000006B70000-0x0000000006C0C000-memory.dmp

Filesize
624KB

Download
memory/4556-10-0x00000000068B0000-0x0000000006926000-memory.dmp

Filesize
472KB

Download
memory/4556-9-0x0000000006880000-0x0000000006890000-memory.dmp

Filesize
64KB

Download
memory/4556-7-0x00000000752CE000-0x00000000752CF000-memory.dmp

Filesize
4KB

Download
memory/4556-6-0x0000000005940000-0x0000000005952000-memory.dmp

Filesize
72KB

Download
memory/4556-5-0x00000000752C0000-0x0000000075A70000-memory.dmp

Filesize
7.7MB

Download
memory/4556-4-0x0000000005850000-0x000000000585A000-memory.dmp

Filesize
40KB

Download
memory/4556-3-0x00000000056C0000-0x0000000005752000-memory.dmp

Filesize
584KB

Download
memory/4556-2-0x0000000005BD0000-0x0000000006174000-memory.dmp

Filesize
5.6MB

Download
memory/4556-1-0x0000000000C00000-0x0000000000CB2000-memory.dmp

Filesize
712KB

Download