formbook | b4455821387f7c5571cf3aa28abde41c188593a4cb5f59d0f1e9c368db49348b

General

Target

file.exe
Size

260KB
MD5

31319144a917439aa8e961cce95f82ee
SHA1

eaea6b758bdba74243099d60e8dd65dcbb524351
SHA256

b4455821387f7c5571cf3aa28abde41c188593a4cb5f59d0f1e9c368db49348b
SHA512

0d28854203e99f9d35fbbb920a23d9829cfad3a2583d42c77515709963c347282737b7ac545673a3b7951c4e44e4c4c37209780ef9a498eeca1ac81948dccf62
SSDEEP

6144:DN92Cag76LSVVz83bwo0SEkRMUEU4zRkaYKGfb:DNQg76LSV4Hf72XU4zRyKGfb

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 5 IoCs

Processes:

rundll32.exe

flow pid process

33 4116 rundll32.exe
34 4116 rundll32.exe
35 4116 rundll32.exe
42 4116 rundll32.exe
43 4116 rundll32.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

flow	pid	process
33	4116	rundll32.exe
34	4116	rundll32.exe
35	4116	rundll32.exe
42	4116	rundll32.exe
43	4116	rundll32.exe

Suspicious use of SetThreadContext 3 IoCs

Processes:

file.exeRegsvcs.exerundll32.exe

description	pid	process	target process
PID 4928 set thread context of 4832	4928	file.exe	Regsvcs.exe
PID 4832 set thread context of 2220	4832	Regsvcs.exe	Explorer.EXE
PID 4116 set thread context of 2220	4116	rundll32.exe	Explorer.EXE

Modifies Internet Explorer settings 1 TTPs 1 IoCs

adware spyware

Modify Registry

T1112

Processes:

rundll32.exe

description	ioc	process
Key created	\Registry\User\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Internet Explorer\IntelliForms\Storage2	rundll32.exe

Suspicious behavior: EnumeratesProcesses 50 IoCs

Processes:

Regsvcs.exerundll32.exe

pid	process
4832	Regsvcs.exe
4832	Regsvcs.exe
4832	Regsvcs.exe
4832	Regsvcs.exe
4832	Regsvcs.exe
4832	Regsvcs.exe
4832	Regsvcs.exe
4832	Regsvcs.exe
4116	rundll32.exe
4116	rundll32.exe
4116	rundll32.exe
4116	rundll32.exe
4116	rundll32.exe
4116	rundll32.exe
4116	rundll32.exe
4116	rundll32.exe
4116	rundll32.exe
4116	rundll32.exe
4116	rundll32.exe
4116	rundll32.exe
4116	rundll32.exe
4116	rundll32.exe
4116	rundll32.exe
4116	rundll32.exe
4116	rundll32.exe
4116	rundll32.exe
4116	rundll32.exe
4116	rundll32.exe
4116	rundll32.exe
4116	rundll32.exe
4116	rundll32.exe
4116	rundll32.exe
4116	rundll32.exe
4116	rundll32.exe
4116	rundll32.exe
4116	rundll32.exe
4116	rundll32.exe
4116	rundll32.exe
4116	rundll32.exe
4116	rundll32.exe
4116	rundll32.exe
4116	rundll32.exe
4116	rundll32.exe
4116	rundll32.exe
4116	rundll32.exe
4116	rundll32.exe
4116	rundll32.exe
4116	rundll32.exe
4116	rundll32.exe
4116	rundll32.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

Explorer.EXE

pid process

2220 Explorer.EXE
Suspicious behavior: MapViewOfSection 7 IoCs

Processes:

Regsvcs.exerundll32.exe

pid process

4832 Regsvcs.exe
4832 Regsvcs.exe
4832 Regsvcs.exe
4116 rundll32.exe
4116 rundll32.exe
4116 rundll32.exe
4116 rundll32.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

Regsvcs.exerundll32.exe

description pid process

Token: SeDebugPrivilege 4832 Regsvcs.exe
Token: SeDebugPrivilege 4116 rundll32.exe

pid	process
2220	Explorer.EXE

description	pid	process
Token: SeDebugPrivilege	4832	Regsvcs.exe
Token: SeDebugPrivilege	4116	rundll32.exe

Suspicious use of WriteProcessMemory 12 IoCs

Processes:

file.exeExplorer.EXErundll32.exe

description	pid	process	target process
PID 4928 wrote to memory of 4832	4928	file.exe	Regsvcs.exe
PID 4928 wrote to memory of 4832	4928	file.exe	Regsvcs.exe
PID 4928 wrote to memory of 4832	4928	file.exe	Regsvcs.exe
PID 4928 wrote to memory of 4832	4928	file.exe	Regsvcs.exe
PID 4928 wrote to memory of 4832	4928	file.exe	Regsvcs.exe
PID 4928 wrote to memory of 4832	4928	file.exe	Regsvcs.exe
PID 2220 wrote to memory of 4116	2220	Explorer.EXE	rundll32.exe
PID 2220 wrote to memory of 4116	2220	Explorer.EXE	rundll32.exe
PID 2220 wrote to memory of 4116	2220	Explorer.EXE	rundll32.exe
PID 4116 wrote to memory of 2876	4116	rundll32.exe	Firefox.exe
PID 4116 wrote to memory of 2876	4116	rundll32.exe	Firefox.exe
PID 4116 wrote to memory of 2876	4116	rundll32.exe	Firefox.exe

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of WriteProcessMemory
PID:2220

C:\Users\Admin\AppData\Local\Temp\file.exe
"C:\Users\Admin\AppData\Local\Temp\file.exe"
2⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4928

C:\Windows\Microsoft.NET\Framework\v4.0.30319\Regsvcs.exe
"C:\Windows\Microsoft.NET\Framework\v4.0.30319\Regsvcs.exe"
3⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
PID:4832

C:\Windows\SysWOW64\rundll32.exe
"C:\Windows\SysWOW64\rundll32.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:4116

C:\Program Files\Mozilla Firefox\Firefox.exe
"C:\Program Files\Mozilla Firefox\Firefox.exe"
3⤵
PID:2876

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Credential Access

Credentials in Files

1

T1081

Discovery

Lateral Movement

Collection

Data from Local System

1

T1005

Command and Control

Exfiltration

Impact

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Downloads

memory/2220-144-0x0000000008080000-0x00000000081E3000-memory.dmp

Filesize
1.4MB

Download
memory/2220-152-0x00000000085B0000-0x0000000008706000-memory.dmp

Filesize
1.3MB

Download
memory/2220-151-0x00000000085B0000-0x0000000008706000-memory.dmp

Filesize
1.3MB

Download
memory/2220-142-0x0000000008080000-0x00000000081E3000-memory.dmp

Filesize
1.4MB

Download
memory/4116-150-0x0000000002E90000-0x0000000002F1F000-memory.dmp

Filesize
572KB

Download
memory/4116-149-0x0000000001210000-0x000000000123D000-memory.dmp

Filesize
180KB

Download
memory/4116-147-0x0000000001210000-0x000000000123D000-memory.dmp

Filesize
180KB

Download
memory/4116-148-0x0000000003030000-0x000000000337A000-memory.dmp

Filesize
3.3MB

Download
memory/4116-146-0x0000000000DA0000-0x0000000000DB4000-memory.dmp

Filesize
80KB

Download
memory/4116-145-0x0000000000000000-mapping.dmp

Download
memory/4832-138-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/4832-141-0x0000000000E70000-0x0000000000E80000-memory.dmp

Filesize
64KB

Download
memory/4832-140-0x00000000014E0000-0x000000000182A000-memory.dmp

Filesize
3.3MB

Download
memory/4832-139-0x0000000000401000-0x000000000042F000-memory.dmp

Filesize
184KB

Download
memory/4832-137-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/4832-134-0x00000000004012B0-mapping.dmp

Download
memory/4832-133-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/4928-143-0x00007FFCC3EF0000-0x00007FFCC49B1000-memory.dmp

Filesize
10.8MB

Download
memory/4928-132-0x000001BDCCCF0000-0x000001BDCCD34000-memory.dmp

Filesize
272KB

Download
memory/4928-135-0x00007FFCC3EF0000-0x00007FFCC49B1000-memory.dmp

Filesize
10.8MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads