formbook | 8c55df1fdc1ac49e2c0a3b5b77bd044d842d2f6e38bd5f782d93853a560140fb

Analysis

max time kernel
149s
max time network
140s
platform
windows10_x64
resource
win10
submitted
15/07/2020, 13:44

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General

Target

MT103 PAYMENT COPY_PDF.exe
Size

369KB
MD5

20a2543a7a37a75b93924dd83c03743d
SHA1

dacf53a9ae5c29a1d33fb2bf064ede984a0ad379
SHA256

8c55df1fdc1ac49e2c0a3b5b77bd044d842d2f6e38bd5f782d93853a560140fb
SHA512

3c49d4b09b5510e9a2ea24e75c9bf694a006cd31b9d06546aa08ac369cb8464916c40c7d0db566ef82d4b147e265582f5d081c26f3b6ad9e99f6c792c9be0d10

Score

10^/10

trojan spyware stealer formbook persistence

Malware Config

Signatures

Suspicious behavior: MapViewOfSection 7 IoCs

pid	Process
4016	MT103 PAYMENT COPY_PDF.exe
4016	MT103 PAYMENT COPY_PDF.exe
4016	MT103 PAYMENT COPY_PDF.exe
3812	raserver.exe
3812	raserver.exe
3812	raserver.exe
3812	raserver.exe

System policy modification 1 TTPs 1 IoCs

evasion

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer	raserver.exe

Modifies Internet Explorer settings 1 TTPs 1 IoCs

adware spyware

Modify Registry

T1112

description	ioc	Process
Key created	\Registry\User\S-1-5-21-2066881839-3229799743-3576549721-1000\SOFTWARE\Microsoft\Internet Explorer\IntelliForms\Storage2	raserver.exe

Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware

Data from Local System
T1005

Credentials in Files
T1081

Executes dropped EXE 1 IoCs

pid	Process
4016	MT103 PAYMENT COPY_PDF.exe

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

Drops file in Program Files directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Program Files (x86)\Zwbu\-zfmxtpqlux.exe	raserver.exe

Adds policy Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run	raserver.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run\ZNCDKZIXI = "C:\\Program Files (x86)\\Zwbu\\-zfmxtpqlux.exe"	raserver.exe

Suspicious use of AdjustPrivilegeToken 11 IoCs

description	pid	Process
Token: SeDebugPrivilege	3544	MT103 PAYMENT COPY_PDF.exe
Token: SeDebugPrivilege	4016	MT103 PAYMENT COPY_PDF.exe
Token: SeDebugPrivilege	3812	raserver.exe
Token: SeShutdownPrivilege	2972	Explorer.EXE
Token: SeCreatePagefilePrivilege	2972	Explorer.EXE
Token: SeShutdownPrivilege	2972	Explorer.EXE
Token: SeCreatePagefilePrivilege	2972	Explorer.EXE
Token: SeShutdownPrivilege	2972	Explorer.EXE
Token: SeCreatePagefilePrivilege	2972	Explorer.EXE
Token: SeShutdownPrivilege	2972	Explorer.EXE
Token: SeCreatePagefilePrivilege	2972	Explorer.EXE

Suspicious behavior: EnumeratesProcesses 69 IoCs

pid	Process
3544	MT103 PAYMENT COPY_PDF.exe
3544	MT103 PAYMENT COPY_PDF.exe
3544	MT103 PAYMENT COPY_PDF.exe
3544	MT103 PAYMENT COPY_PDF.exe
3544	MT103 PAYMENT COPY_PDF.exe
3544	MT103 PAYMENT COPY_PDF.exe
3544	MT103 PAYMENT COPY_PDF.exe
3544	MT103 PAYMENT COPY_PDF.exe
3544	MT103 PAYMENT COPY_PDF.exe
3544	MT103 PAYMENT COPY_PDF.exe
3544	MT103 PAYMENT COPY_PDF.exe
3544	MT103 PAYMENT COPY_PDF.exe
3544	MT103 PAYMENT COPY_PDF.exe
3544	MT103 PAYMENT COPY_PDF.exe
3544	MT103 PAYMENT COPY_PDF.exe
3544	MT103 PAYMENT COPY_PDF.exe
3544	MT103 PAYMENT COPY_PDF.exe
3544	MT103 PAYMENT COPY_PDF.exe
3544	MT103 PAYMENT COPY_PDF.exe
3544	MT103 PAYMENT COPY_PDF.exe
3544	MT103 PAYMENT COPY_PDF.exe
3544	MT103 PAYMENT COPY_PDF.exe
3544	MT103 PAYMENT COPY_PDF.exe
4016	MT103 PAYMENT COPY_PDF.exe
4016	MT103 PAYMENT COPY_PDF.exe
4016	MT103 PAYMENT COPY_PDF.exe
4016	MT103 PAYMENT COPY_PDF.exe
3812	raserver.exe
3812	raserver.exe
3812	raserver.exe
3812	raserver.exe
3812	raserver.exe
3812	raserver.exe
3812	raserver.exe
3812	raserver.exe
3812	raserver.exe
3812	raserver.exe
3812	raserver.exe
3812	raserver.exe
3812	raserver.exe
3812	raserver.exe
3812	raserver.exe
3812	raserver.exe
3812	raserver.exe
3812	raserver.exe
3812	raserver.exe
3812	raserver.exe
3812	raserver.exe
3812	raserver.exe
3812	raserver.exe
3812	raserver.exe
3812	raserver.exe
3812	raserver.exe
3812	raserver.exe
3812	raserver.exe
3812	raserver.exe
3812	raserver.exe
3812	raserver.exe
3812	raserver.exe
3812	raserver.exe
3812	raserver.exe
3812	raserver.exe
3812	raserver.exe
3812	raserver.exe
3812	raserver.exe
3812	raserver.exe
3812	raserver.exe
3812	raserver.exe
3812	raserver.exe

Suspicious use of WriteProcessMemory 18 IoCs

description	pid	Process	procid_target
PID 3544 wrote to memory of 4016	3544	MT103 PAYMENT COPY_PDF.exe	67
PID 3544 wrote to memory of 4016	3544	MT103 PAYMENT COPY_PDF.exe	67
PID 3544 wrote to memory of 4016	3544	MT103 PAYMENT COPY_PDF.exe	67
PID 3544 wrote to memory of 4016	3544	MT103 PAYMENT COPY_PDF.exe	67
PID 3544 wrote to memory of 4016	3544	MT103 PAYMENT COPY_PDF.exe	67
PID 3544 wrote to memory of 4016	3544	MT103 PAYMENT COPY_PDF.exe	67
PID 2972 wrote to memory of 3812	2972	Explorer.EXE	68
PID 2972 wrote to memory of 3812	2972	Explorer.EXE	68
PID 2972 wrote to memory of 3812	2972	Explorer.EXE	68
PID 3812 wrote to memory of 3796	3812	raserver.exe	69
PID 3812 wrote to memory of 3796	3812	raserver.exe	69
PID 3812 wrote to memory of 3796	3812	raserver.exe	69
PID 3812 wrote to memory of 3704	3812	raserver.exe	77
PID 3812 wrote to memory of 3704	3812	raserver.exe	77
PID 3812 wrote to memory of 3704	3812	raserver.exe	77
PID 3812 wrote to memory of 1028	3812	raserver.exe	79
PID 3812 wrote to memory of 1028	3812	raserver.exe	79
PID 3812 wrote to memory of 1028	3812	raserver.exe	79

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 3544 set thread context of 4016	3544	MT103 PAYMENT COPY_PDF.exe	67
PID 4016 set thread context of 2972	4016	MT103 PAYMENT COPY_PDF.exe	56
PID 3812 set thread context of 2972	3812	raserver.exe	56

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2972
- C:\Users\Admin\AppData\Local\Temp\MT103 PAYMENT COPY_PDF.exe
  "C:\Users\Admin\AppData\Local\Temp\MT103 PAYMENT COPY_PDF.exe"
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  - Suspicious use of SetThreadContext
  PID:3544
- - C:\Users\Admin\AppData\Local\Temp\MT103 PAYMENT COPY_PDF.exe
    "C:\Users\Admin\AppData\Local\Temp\MT103 PAYMENT COPY_PDF.exe"
    3⤵
    - Suspicious behavior: MapViewOfSection
    - Executes dropped EXE
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of SetThreadContext
    PID:4016
- C:\Windows\SysWOW64\raserver.exe
  "C:\Windows\SysWOW64\raserver.exe"
  2⤵
  - Suspicious behavior: MapViewOfSection
  - System policy modification
  - Modifies Internet Explorer settings
  - Drops file in Program Files directory
  - Adds policy Run key to start application
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  - Suspicious use of SetThreadContext
  PID:3812
- - C:\Windows\SysWOW64\cmd.exe
    /c del "C:\Users\Admin\AppData\Local\Temp\MT103 PAYMENT COPY_PDF.exe"
    3⤵
    PID:3796
- - C:\Windows\SysWOW64\cmd.exe
    /c copy "C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\Login Data" "C:\Users\Admin\AppData\Local\Temp\DB1" /V
    3⤵
    PID:3704
- - C:\Program Files\Mozilla Firefox\Firefox.exe
    "C:\Program Files\Mozilla Firefox\Firefox.exe"
    3⤵
    PID:1028

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Credentials in Files

T1081

Discovery

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Exfiltration

Impact

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Downloads

memory/1028-13-0x00007FF73E940000-0x00007FF73E9D3000-memory.dmp

Filesize
588KB

Download
memory/1028-14-0x00007FF73E940000-0x00007FF73E9D3000-memory.dmp

Filesize
588KB

Download
memory/1028-12-0x00007FF73E940000-0x00007FF73E9D3000-memory.dmp

Filesize
588KB

Download
memory/3812-5-0x0000000000120000-0x000000000013F000-memory.dmp

Filesize
124KB

Download
memory/3812-10-0x00000000030D0000-0x000000000317D000-memory.dmp

Filesize
692KB

Download
memory/3812-7-0x0000000005680000-0x00000000057D7000-memory.dmp

Filesize
1.3MB

Download
memory/3812-4-0x0000000000120000-0x000000000013F000-memory.dmp

Filesize
124KB

Download
memory/4016-0-0x0000000000400000-0x000000000042D000-memory.dmp

Filesize
180KB

Download