formbook | 5c1cbdbe638a90c049275c6a22e8f0352d1aaecb5b01ef44cf5b1f17b8305191

Analysis

max time kernel
149s
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
25-08-2024 01:14

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General

Target

FyqYh8fPEic6dw9.exe
Size

676KB
MD5

11eed83490fd368317cc4b49df18a411
SHA1

b367f98a13c73575bab7bd5626b1ebcf0ce895cc
SHA256

c920a418d58520669f8f3d0db050c479bb16548283758221a24ad631e061fab7
SHA512

a339d0361ed687811df7d16bf513529318a49263aba572902c5b5cb3395befd9dbb7fd82ff180065103ffe8f0da15ffd3b5f9eab43a262b4416c7f1944b7dea3
SSDEEP

12288:P8ewloL3rlW4A/bJDbz4EegdxRvDw4wbuGJ0BqDfapz9i:PKyvybJDbz4R6xRLw4bGJcIYz

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/628-13-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral2/memory/628-18-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral2/memory/5020-23-0x0000000000950000-0x000000000097F000-memory.dmp	formbook

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 1644 set thread context of 628	1644	FyqYh8fPEic6dw9.exe	94
PID 628 set thread context of 3436	628	FyqYh8fPEic6dw9.exe	56
PID 5020 set thread context of 3436	5020	cmstp.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	FyqYh8fPEic6dw9.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmstp.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Modifies registry class 2 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{4336a54d-038b-4685-ab02-99bb52d3fb8b}\Instance\	Explorer.EXE
Key created	\REGISTRY\USER\S-1-5-21-4182098368-2521458979-3782681353-1000_Classes\CLSID\{018D5C66-4533-4307-9B53-224DE2ED1FE6}\Instance\	Explorer.EXE

Suspicious behavior: EnumeratesProcesses 58 IoCs

pid	Process
628	FyqYh8fPEic6dw9.exe
628	FyqYh8fPEic6dw9.exe
628	FyqYh8fPEic6dw9.exe
628	FyqYh8fPEic6dw9.exe
5020	cmstp.exe
5020	cmstp.exe
5020	cmstp.exe
5020	cmstp.exe
5020	cmstp.exe
5020	cmstp.exe
5020	cmstp.exe
5020	cmstp.exe
5020	cmstp.exe
5020	cmstp.exe
5020	cmstp.exe
5020	cmstp.exe
5020	cmstp.exe
5020	cmstp.exe
5020	cmstp.exe
5020	cmstp.exe
5020	cmstp.exe
5020	cmstp.exe
5020	cmstp.exe
5020	cmstp.exe
5020	cmstp.exe
5020	cmstp.exe
5020	cmstp.exe
5020	cmstp.exe
5020	cmstp.exe
5020	cmstp.exe
5020	cmstp.exe
5020	cmstp.exe
5020	cmstp.exe
5020	cmstp.exe
5020	cmstp.exe
5020	cmstp.exe
5020	cmstp.exe
5020	cmstp.exe
5020	cmstp.exe
5020	cmstp.exe
5020	cmstp.exe
5020	cmstp.exe
5020	cmstp.exe
5020	cmstp.exe
5020	cmstp.exe
5020	cmstp.exe
5020	cmstp.exe
5020	cmstp.exe
5020	cmstp.exe
5020	cmstp.exe
5020	cmstp.exe
5020	cmstp.exe
5020	cmstp.exe
5020	cmstp.exe
5020	cmstp.exe
5020	cmstp.exe
5020	cmstp.exe
5020	cmstp.exe

Suspicious behavior: MapViewOfSection 5 IoCs

pid	Process
628	FyqYh8fPEic6dw9.exe
628	FyqYh8fPEic6dw9.exe
628	FyqYh8fPEic6dw9.exe
5020	cmstp.exe
5020	cmstp.exe

Suspicious use of AdjustPrivilegeToken 6 IoCs

description	pid	Process
Token: SeDebugPrivilege	628	FyqYh8fPEic6dw9.exe
Token: SeDebugPrivilege	5020	cmstp.exe
Token: SeShutdownPrivilege	3436	Explorer.EXE
Token: SeCreatePagefilePrivilege	3436	Explorer.EXE
Token: SeShutdownPrivilege	3436	Explorer.EXE
Token: SeCreatePagefilePrivilege	3436	Explorer.EXE

Suspicious use of UnmapMainImage 1 IoCs

pid	Process
3436	Explorer.EXE

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 1644 wrote to memory of 628	1644	FyqYh8fPEic6dw9.exe	94
PID 1644 wrote to memory of 628	1644	FyqYh8fPEic6dw9.exe	94
PID 1644 wrote to memory of 628	1644	FyqYh8fPEic6dw9.exe	94
PID 1644 wrote to memory of 628	1644	FyqYh8fPEic6dw9.exe	94
PID 1644 wrote to memory of 628	1644	FyqYh8fPEic6dw9.exe	94
PID 1644 wrote to memory of 628	1644	FyqYh8fPEic6dw9.exe	94
PID 3436 wrote to memory of 5020	3436	Explorer.EXE	95
PID 3436 wrote to memory of 5020	3436	Explorer.EXE	95
PID 3436 wrote to memory of 5020	3436	Explorer.EXE	95
PID 5020 wrote to memory of 3988	5020	cmstp.exe	96
PID 5020 wrote to memory of 3988	5020	cmstp.exe	96
PID 5020 wrote to memory of 3988	5020	cmstp.exe	96

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:3436
- C:\Users\Admin\AppData\Local\Temp\FyqYh8fPEic6dw9.exe
  "C:\Users\Admin\AppData\Local\Temp\FyqYh8fPEic6dw9.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:1644
- - C:\Users\Admin\AppData\Local\Temp\FyqYh8fPEic6dw9.exe
    "C:\Users\Admin\AppData\Local\Temp\FyqYh8fPEic6dw9.exe"
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious behavior: MapViewOfSection
    - Suspicious use of AdjustPrivilegeToken
    PID:628
- 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:5020
- - C:\Windows\SysWOW64\cmd.exe
    /c del "C:\Users\Admin\AppData\Local\Temp\FyqYh8fPEic6dw9.exe"
    3⤵
    - System Location Discovery: System Language Discovery
    PID:3988

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/628-13-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/628-18-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/628-19-0x00000000013F0000-0x0000000001404000-memory.dmp

Filesize
80KB

Download
memory/628-16-0x0000000001480000-0x00000000017CA000-memory.dmp

Filesize
3.3MB

Download
memory/1644-12-0x00000000080C0000-0x000000000815C000-memory.dmp

Filesize
624KB

Download
memory/1644-3-0x0000000004D80000-0x0000000004E12000-memory.dmp

Filesize
584KB

Download
memory/1644-6-0x00000000051E0000-0x00000000051FA000-memory.dmp

Filesize
104KB

Download
memory/1644-7-0x000000007516E000-0x000000007516F000-memory.dmp

Filesize
4KB

Download
memory/1644-8-0x0000000075160000-0x0000000075910000-memory.dmp

Filesize
7.7MB

Download
memory/1644-9-0x0000000004EC0000-0x0000000004ECC000-memory.dmp

Filesize
48KB

Download
memory/1644-10-0x00000000050C0000-0x00000000050D0000-memory.dmp

Filesize
64KB

Download
memory/1644-11-0x0000000005A00000-0x0000000005A76000-memory.dmp

Filesize
472KB

Download
memory/1644-0-0x000000007516E000-0x000000007516F000-memory.dmp

Filesize
4KB

Download
memory/1644-4-0x0000000075160000-0x0000000075910000-memory.dmp

Filesize
7.7MB

Download
memory/1644-15-0x0000000075160000-0x0000000075910000-memory.dmp

Filesize
7.7MB

Download
memory/1644-5-0x0000000004E40000-0x0000000004E4A000-memory.dmp

Filesize
40KB

Download
memory/1644-2-0x0000000005250000-0x00000000057F4000-memory.dmp

Filesize
5.6MB

Download
memory/1644-1-0x0000000000300000-0x00000000003AC000-memory.dmp

Filesize
688KB

Download
memory/3436-20-0x00000000081A0000-0x000000000833C000-memory.dmp

Filesize
1.6MB

Download
memory/3436-24-0x00000000081A0000-0x000000000833C000-memory.dmp

Filesize
1.6MB

Download
memory/3436-28-0x0000000008340000-0x000000000844D000-memory.dmp

Filesize
1.1MB

Download
memory/3436-29-0x0000000008340000-0x000000000844D000-memory.dmp

Filesize
1.1MB

Download
memory/3436-31-0x0000000008340000-0x000000000844D000-memory.dmp

Filesize
1.1MB

Download
memory/5020-21-0x0000000000E70000-0x0000000000E86000-memory.dmp

Filesize
88KB

Download
memory/5020-22-0x0000000000E70000-0x0000000000E86000-memory.dmp

Filesize
88KB

Download
memory/5020-23-0x0000000000950000-0x000000000097F000-memory.dmp

Filesize
188KB

Download