formbook | 15c4fa85cbc2c692575d38601a56e49a52a23d74a2dce110bf17beadf46672bb

General

Target

mazx.exe
Size

313KB
MD5

ce868e50711384f6932917ceab7b3349
SHA1

65254c5c5b67524cbc73d8e5f5755a24451f7fd5
SHA256

15c4fa85cbc2c692575d38601a56e49a52a23d74a2dce110bf17beadf46672bb
SHA512

e64b224fd9d60cc70a74b35dfd5869cbbbea44d1cde26a71c1a9a55dc5f226a0c409a9583c97c4115acc4c6d00a072d827162d32977386268789483ce8e89810

Score

10^/10

trojan spyware stealer formbook persistence

Malware Config

Signatures

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

Processes:

colorcpl.exe

description ioc process

File opened for modification C:\Program Files (x86)\Pcx4\ms8pxlgd.exe colorcpl.exe

description	ioc	process
File opened for modification	C:\Program Files (x86)\Pcx4\ms8pxlgd.exe	colorcpl.exe

Modifies Internet Explorer settings 1 TTPs 1 IoCs

adware spyware

Modify Registry

T1112

Processes:

colorcpl.exe

description	ioc	process
Key created	\Registry\User\S-1-5-21-1231583446-2617009595-2137880041-1000\SOFTWARE\Microsoft\Internet Explorer\IntelliForms\Storage2	colorcpl.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

Suspicious use of WriteProcessMemory 18 IoCs

Processes:

mazx.exeExplorer.EXEcolorcpl.exe

description	pid	process	target process
PID 3848 wrote to memory of 2620	3848	mazx.exe	mazx.exe
PID 3848 wrote to memory of 2620	3848	mazx.exe	mazx.exe
PID 3848 wrote to memory of 2620	3848	mazx.exe	mazx.exe
PID 3848 wrote to memory of 2620	3848	mazx.exe	mazx.exe
PID 3848 wrote to memory of 2620	3848	mazx.exe	mazx.exe
PID 3848 wrote to memory of 2620	3848	mazx.exe	mazx.exe
PID 2996 wrote to memory of 2872	2996	Explorer.EXE	colorcpl.exe
PID 2996 wrote to memory of 2872	2996	Explorer.EXE	colorcpl.exe
PID 2996 wrote to memory of 2872	2996	Explorer.EXE	colorcpl.exe
PID 2872 wrote to memory of 3724	2872	colorcpl.exe	cmd.exe
PID 2872 wrote to memory of 3724	2872	colorcpl.exe	cmd.exe
PID 2872 wrote to memory of 3724	2872	colorcpl.exe	cmd.exe
PID 2872 wrote to memory of 3928	2872	colorcpl.exe	cmd.exe
PID 2872 wrote to memory of 3928	2872	colorcpl.exe	cmd.exe
PID 2872 wrote to memory of 3928	2872	colorcpl.exe	cmd.exe
PID 2872 wrote to memory of 3452	2872	colorcpl.exe	Firefox.exe
PID 2872 wrote to memory of 3452	2872	colorcpl.exe	Firefox.exe
PID 2872 wrote to memory of 3452	2872	colorcpl.exe	Firefox.exe

Suspicious use of SetThreadContext 3 IoCs

Processes:

mazx.exemazx.execolorcpl.exe

description	pid	process	target process
PID 3848 set thread context of 2620	3848	mazx.exe	mazx.exe
PID 2620 set thread context of 2996	2620	mazx.exe	Explorer.EXE
PID 2872 set thread context of 2996	2872	colorcpl.exe	Explorer.EXE

Suspicious behavior: EnumeratesProcesses 44 IoCs

Processes:

mazx.execolorcpl.exe

pid	process
2620	mazx.exe
2620	mazx.exe
2620	mazx.exe
2620	mazx.exe
2872	colorcpl.exe
2872	colorcpl.exe
2872	colorcpl.exe
2872	colorcpl.exe
2872	colorcpl.exe
2872	colorcpl.exe
2872	colorcpl.exe
2872	colorcpl.exe
2872	colorcpl.exe
2872	colorcpl.exe
2872	colorcpl.exe
2872	colorcpl.exe
2872	colorcpl.exe
2872	colorcpl.exe
2872	colorcpl.exe
2872	colorcpl.exe
2872	colorcpl.exe
2872	colorcpl.exe
2872	colorcpl.exe
2872	colorcpl.exe
2872	colorcpl.exe
2872	colorcpl.exe
2872	colorcpl.exe
2872	colorcpl.exe
2872	colorcpl.exe
2872	colorcpl.exe
2872	colorcpl.exe
2872	colorcpl.exe
2872	colorcpl.exe
2872	colorcpl.exe
2872	colorcpl.exe
2872	colorcpl.exe
2872	colorcpl.exe
2872	colorcpl.exe
2872	colorcpl.exe
2872	colorcpl.exe
2872	colorcpl.exe
2872	colorcpl.exe
2872	colorcpl.exe
2872	colorcpl.exe

Suspicious behavior: MapViewOfSection 7 IoCs

Processes:

mazx.execolorcpl.exe

pid process

2620 mazx.exe
2620 mazx.exe
2620 mazx.exe
2872 colorcpl.exe
2872 colorcpl.exe
2872 colorcpl.exe
2872 colorcpl.exe

Suspicious use of AdjustPrivilegeToken 10 IoCs

Processes:

mazx.execolorcpl.exeExplorer.EXE

description	pid	process
Token: SeDebugPrivilege	2620	mazx.exe
Token: SeDebugPrivilege	2872	colorcpl.exe
Token: SeShutdownPrivilege	2996	Explorer.EXE
Token: SeCreatePagefilePrivilege	2996	Explorer.EXE
Token: SeShutdownPrivilege	2996	Explorer.EXE
Token: SeCreatePagefilePrivilege	2996	Explorer.EXE
Token: SeShutdownPrivilege	2996	Explorer.EXE
Token: SeCreatePagefilePrivilege	2996	Explorer.EXE
Token: SeShutdownPrivilege	2996	Explorer.EXE
Token: SeCreatePagefilePrivilege	2996	Explorer.EXE

System policy modification 1 TTPs 1 IoCs
evasion

Modify Registry
T1112

Processes:

colorcpl.exe

description ioc process

Key created \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer colorcpl.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer	colorcpl.exe

Adds Run entry to policy start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

colorcpl.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run	colorcpl.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run\ZFDH_RY0AN = "C:\\Program Files (x86)\\Pcx4\\ms8pxlgd.exe"	colorcpl.exe

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of WriteProcessMemory
- Suspicious use of AdjustPrivilegeToken
PID:2996

C:\Users\Admin\AppData\Local\Temp\mazx.exe
"C:\Users\Admin\AppData\Local\Temp\mazx.exe"
2⤵
- Suspicious use of WriteProcessMemory
- Suspicious use of SetThreadContext
PID:3848

C:\Users\Admin\AppData\Local\Temp\mazx.exe
"C:\Users\Admin\AppData\Local\Temp\mazx.exe"
3⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
PID:2620

C:\Windows\SysWOW64\colorcpl.exe
"C:\Windows\SysWOW64\colorcpl.exe"
2⤵
- Drops file in Program Files directory
- Modifies Internet Explorer settings
- Suspicious use of WriteProcessMemory
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
- System policy modification
- Adds Run entry to policy start application
PID:2872

C:\Windows\SysWOW64\cmd.exe
/c del "C:\Users\Admin\AppData\Local\Temp\mazx.exe"
3⤵
PID:3724

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:3928

C:\Program Files\Mozilla Firefox\Firefox.exe
"C:\Program Files\Mozilla Firefox\Firefox.exe"
3⤵
PID:3452

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

3

T1112

Credential Access

Credentials in Files

1

T1081

Discovery

Lateral Movement

Collection

Data from Local System

1

T1005

Exfiltration

Command and Control

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\DB1

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C:\Users\Admin\AppData\Roaming\307QQPQQ\307logim.jpeg

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C:\Users\Admin\AppData\Roaming\307QQPQQ\307logrf.ini

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C:\Users\Admin\AppData\Roaming\307QQPQQ\307logrg.ini

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C:\Users\Admin\AppData\Roaming\307QQPQQ\307logri.ini

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C:\Users\Admin\AppData\Roaming\307QQPQQ\307logrv.ini

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memory/2620-1-0x000000000041E320-mapping.dmp

Download
memory/2620-0-0x0000000000400000-0x000000000042D000-memory.dmp

Filesize
180KB

Download
memory/2872-5-0x00000000003A0000-0x00000000003B9000-memory.dmp

Filesize
100KB

Download
memory/2872-10-0x0000000005AB0000-0x0000000005B60000-memory.dmp

Filesize
704KB

Download
memory/2872-7-0x00000000058B0000-0x0000000005958000-memory.dmp

Filesize
672KB

Download
memory/2872-4-0x00000000003A0000-0x00000000003B9000-memory.dmp

Filesize
100KB

Download
memory/2872-3-0x0000000000000000-mapping.dmp

Download
memory/3452-11-0x0000000000000000-mapping.dmp

Download
memory/3452-12-0x00007FF6A8DD0000-0x00007FF6A8E63000-memory.dmp

Filesize
588KB

Download
memory/3452-13-0x00007FF6A8DD0000-0x00007FF6A8E63000-memory.dmp

Filesize
588KB

Download
memory/3452-14-0x00007FF6A8DD0000-0x00007FF6A8E63000-memory.dmp

Filesize
588KB

Download
memory/3724-6-0x0000000000000000-mapping.dmp

Download
memory/3928-8-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads