formbook | 42ff33d8a2c198145c876fbfab4855fa43faaf292d10c73f144619c34714f97e

Analysis

max time kernel
150s
max time network
153s
platform
windows10-2004_x64
resource
win10v2004-20220812-en
resource tags

arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
submitted
02/11/2022, 03:39

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

file.exe
Size

73KB
MD5

9f3d2f161ab12215d8127143188fadc6
SHA1

2fa3f6914fe95ebd19d6395fed3296dee351ec56
SHA256

42ff33d8a2c198145c876fbfab4855fa43faaf292d10c73f144619c34714f97e
SHA512

b2cad85987c0b431323396a68a609422a7665033f25f43fb7e2430b192eafe00d375ce8b518385b962d0b4601ac170184096f5b5015e536c5cf0419fa22c5d61
SSDEEP

1536:4WmCpPvpguzG3Uj/mvaVaDLGnsyjLixPd:4W3PLzUSmvaVaDLGnsyPA

Score

10^/10

formbook tu7g rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

Campaign

tu7g

Decoy

fbbktzFKN8MB1h8=

FPidEXGfkl0WqgXoVhHehw==

iHEjIL7XwJdpN6Er4Evhu03o

fHQTMsjqD3cPpQ==

VDXmCsr22oYhshz/Fg305nF21Q==

j4ZHfk5rRf6tVtwbMRU=

AORqAXKWy4R+//VwFdB6VVk=

9PW0Yw9RkIfer5+/bum7nlxwy1QfDQ==

ZU8mUjRgSOn3d0eFD3puQgVpnaAj

nlHgT2aJaMMB1h8=

+qc6XcgwdjVsEgKQ2zT+

/gCHJbBZrWjx1OZN40Hhu03o

48dX+WeLWAjFZMR2lItP8bJ87X4=

+N6H9VVzix7uogI=

Jf/NAPQe+8we7uftVhHehw==

YmANk8T+ix7uogI=

GTKxpLAYsJTl

pT8FM/QacYAV/+VInxn0

8JAnF9PnyZA29xH3Iw==

8ZdFPhCvGxYBxRCTqtB6VVk=

Signatures

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

Blocklisted process makes network request 1 IoCs

flow	pid	Process
50	1952	cscript.exe

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

Data from Local System
T1005

Credentials in Files
T1081

Suspicious use of SetThreadContext 4 IoCs

description	pid	Process	procid_target
PID 4308 set thread context of 820	4308	file.exe	81
PID 820 set thread context of 2724	820	Caspol.exe	39
PID 820 set thread context of 2724	820	Caspol.exe	39
PID 1952 set thread context of 2724	1952	cscript.exe	39

Modifies Internet Explorer settings 1 TTPs 1 IoCs

adware spyware

Modify Registry

T1112

description	ioc	Process
Key created	\Registry\User\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Internet Explorer\IntelliForms\Storage2	cscript.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
4308	file.exe
4308	file.exe
820	Caspol.exe
820	Caspol.exe
820	Caspol.exe
820	Caspol.exe
820	Caspol.exe
820	Caspol.exe
820	Caspol.exe
820	Caspol.exe
820	Caspol.exe
820	Caspol.exe
1952	cscript.exe
1952	cscript.exe
1952	cscript.exe
1952	cscript.exe
1952	cscript.exe
1952	cscript.exe
1952	cscript.exe
1952	cscript.exe
1952	cscript.exe
1952	cscript.exe
1952	cscript.exe
1952	cscript.exe
1952	cscript.exe
1952	cscript.exe
1952	cscript.exe
1952	cscript.exe
1952	cscript.exe
1952	cscript.exe
1952	cscript.exe
1952	cscript.exe
1952	cscript.exe
1952	cscript.exe
1952	cscript.exe
1952	cscript.exe
1952	cscript.exe
1952	cscript.exe
1952	cscript.exe
1952	cscript.exe
1952	cscript.exe
1952	cscript.exe
1952	cscript.exe
1952	cscript.exe
1952	cscript.exe
1952	cscript.exe
1952	cscript.exe
1952	cscript.exe
1952	cscript.exe
1952	cscript.exe
1952	cscript.exe
1952	cscript.exe
1952	cscript.exe
1952	cscript.exe
1952	cscript.exe
1952	cscript.exe
1952	cscript.exe
1952	cscript.exe
1952	cscript.exe
1952	cscript.exe
1952	cscript.exe
1952	cscript.exe
1952	cscript.exe
1952	cscript.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2724	Explorer.EXE

Suspicious behavior: MapViewOfSection 8 IoCs

pid	Process
820	Caspol.exe
820	Caspol.exe
820	Caspol.exe
820	Caspol.exe
1952	cscript.exe
1952	cscript.exe
1952	cscript.exe
1952	cscript.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	4308	file.exe
Token: SeDebugPrivilege	820	Caspol.exe
Token: SeDebugPrivilege	1952	cscript.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 4308 wrote to memory of 980	4308	file.exe	80
PID 4308 wrote to memory of 980	4308	file.exe	80
PID 4308 wrote to memory of 980	4308	file.exe	80
PID 4308 wrote to memory of 820	4308	file.exe	81
PID 4308 wrote to memory of 820	4308	file.exe	81
PID 4308 wrote to memory of 820	4308	file.exe	81
PID 4308 wrote to memory of 820	4308	file.exe	81
PID 4308 wrote to memory of 820	4308	file.exe	81
PID 4308 wrote to memory of 820	4308	file.exe	81
PID 2724 wrote to memory of 1952	2724	Explorer.EXE	86
PID 2724 wrote to memory of 1952	2724	Explorer.EXE	86
PID 2724 wrote to memory of 1952	2724	Explorer.EXE	86
PID 1952 wrote to memory of 1920	1952	cscript.exe	90
PID 1952 wrote to memory of 1920	1952	cscript.exe	90
PID 1952 wrote to memory of 1920	1952	cscript.exe	90

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of WriteProcessMemory
PID:2724
- C:\Users\Admin\AppData\Local\Temp\file.exe
  "C:\Users\Admin\AppData\Local\Temp\file.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:4308
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\Caspol.exe
    "C:\Windows\Microsoft.NET\Framework\v4.0.30319\Caspol.exe"
    3⤵
    PID:980
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\Caspol.exe
    "C:\Windows\Microsoft.NET\Framework\v4.0.30319\Caspol.exe"
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious behavior: MapViewOfSection
    - Suspicious use of AdjustPrivilegeToken
    PID:820
- C:\Windows\SysWOW64\cscript.exe
  "C:\Windows\SysWOW64\cscript.exe"
  2⤵
  - Blocklisted process makes network request
  - Suspicious use of SetThreadContext
  - Modifies Internet Explorer settings
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:1952
- - C:\Program Files\Mozilla Firefox\Firefox.exe
    "C:\Program Files\Mozilla Firefox\Firefox.exe"
    3⤵
    PID:1920

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

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

Replay Monitor

Loading Replay Monitor...

Downloads

memory/820-144-0x00000000019E0000-0x00000000019F0000-memory.dmp

Filesize
64KB

Download
memory/820-147-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/820-135-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/820-137-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/820-138-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/820-139-0x0000000000401000-0x000000000042F000-memory.dmp

Filesize
184KB

Download
memory/820-140-0x0000000001A80000-0x0000000001DCA000-memory.dmp

Filesize
3.3MB

Download
memory/820-141-0x0000000001980000-0x0000000001990000-memory.dmp

Filesize
64KB

Download
memory/820-148-0x0000000000401000-0x000000000042F000-memory.dmp

Filesize
184KB

Download
memory/1952-149-0x0000000000480000-0x00000000004A7000-memory.dmp

Filesize
156KB

Download
memory/1952-150-0x0000000001180000-0x00000000011AD000-memory.dmp

Filesize
180KB

Download
memory/1952-151-0x0000000003220000-0x000000000356A000-memory.dmp

Filesize
3.3MB

Download
memory/1952-152-0x0000000003050000-0x00000000030DF000-memory.dmp

Filesize
572KB

Download
memory/1952-154-0x0000000001180000-0x00000000011AD000-memory.dmp

Filesize
180KB

Download
memory/2724-142-0x0000000002840000-0x0000000002943000-memory.dmp

Filesize
1.0MB

Download
memory/2724-145-0x0000000008580000-0x0000000008709000-memory.dmp

Filesize
1.5MB

Download
memory/2724-153-0x0000000002BB0000-0x0000000002C59000-memory.dmp

Filesize
676KB

Download
memory/2724-155-0x0000000002BB0000-0x0000000002C59000-memory.dmp

Filesize
676KB

Download
memory/4308-132-0x0000000000890000-0x00000000008A6000-memory.dmp

Filesize
88KB

Download