formbook | ce4764b6234abdbe6f67d1f7c8a54fc7908208a2aec45b6135407cf2e87e67c2

General

Target

shipping document INV+PL.exe
Size

414KB
MD5

ca4fbf42b3da386f10f5c82afe65a0bf
SHA1

8fd29038564832e3f356db1a7d6cf3464c3e07cc
SHA256

ce4764b6234abdbe6f67d1f7c8a54fc7908208a2aec45b6135407cf2e87e67c2
SHA512

7b9d3b52811b870862f708577ecf1301634d15c43e23d205be13f57891504b0fc5b2bc10d207afeb9e9c0f035b04f6eab7d2252e6009d28ca51f23bc69ff588f

Score

10^/10

rat trojan spyware stealer formbook persistence evasion

Malware Config

Signatures

Suspicious behavior: EnumeratesProcesses 24 IoCs

Processes:

shipping document INV+PL.exeshipping document INV+PL.exenetsh.exe

pid	process
1108	shipping document INV+PL.exe
1108	shipping document INV+PL.exe
1108	shipping document INV+PL.exe
1620	shipping document INV+PL.exe
1620	shipping document INV+PL.exe
388	netsh.exe
388	netsh.exe
388	netsh.exe
388	netsh.exe
388	netsh.exe
388	netsh.exe
388	netsh.exe
388	netsh.exe
388	netsh.exe
388	netsh.exe
388	netsh.exe
388	netsh.exe
388	netsh.exe
388	netsh.exe
388	netsh.exe
388	netsh.exe
388	netsh.exe
388	netsh.exe
388	netsh.exe

Suspicious use of SetThreadContext 3 IoCs

Processes:

shipping document INV+PL.exeshipping document INV+PL.exenetsh.exe

description	pid	process	target process
PID 1108 set thread context of 1620	1108	shipping document INV+PL.exe	shipping document INV+PL.exe
PID 1620 set thread context of 1284	1620	shipping document INV+PL.exe	Explorer.EXE
PID 388 set thread context of 1284	388	netsh.exe	Explorer.EXE

Suspicious use of SendNotifyMessage 4 IoCs

Processes:

Explorer.EXE

pid process

1284 Explorer.EXE
1284 Explorer.EXE
1284 Explorer.EXE
1284 Explorer.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

Processes:

netsh.exe

description ioc process

File opened for modification C:\Program Files (x86)\Cabc\gdijlzx.exe netsh.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

pid	process
1284	Explorer.EXE
1284	Explorer.EXE
1284	Explorer.EXE
1284	Explorer.EXE

description	ioc	process
File opened for modification	C:\Program Files (x86)\Cabc\gdijlzx.exe	netsh.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

Processes:

shipping document INV+PL.exeshipping document INV+PL.exenetsh.exeExplorer.EXE

description	pid	process
Token: SeDebugPrivilege	1108	shipping document INV+PL.exe
Token: SeDebugPrivilege	1620	shipping document INV+PL.exe
Token: SeDebugPrivilege	388	netsh.exe
Token: SeShutdownPrivilege	1284	Explorer.EXE

Suspicious use of FindShellTrayWindow 5 IoCs

Processes:

Explorer.EXE

pid process

1284 Explorer.EXE
1284 Explorer.EXE
1284 Explorer.EXE
1284 Explorer.EXE
1284 Explorer.EXE
Deletes itself 1 IoCs

Processes:

cmd.exe

pid process

1044 cmd.exe

pid	process
1284	Explorer.EXE
1284	Explorer.EXE
1284	Explorer.EXE
1284	Explorer.EXE
1284	Explorer.EXE

pid	process
1044	cmd.exe

Modifies Internet Explorer settings 1 TTPs 1 IoCs

adware spyware

Modify Registry

T1112

Processes:

netsh.exe

description	ioc	process
Key created	\Registry\User\S-1-5-21-1131729243-447456001-3632642222-1000\SOFTWARE\Microsoft\Internet Explorer\IntelliForms\Storage2	netsh.exe

Suspicious use of WriteProcessMemory 20 IoCs

Processes:

shipping document INV+PL.exeExplorer.EXEnetsh.exe

description	pid	process	target process
PID 1108 wrote to memory of 1620	1108	shipping document INV+PL.exe	shipping document INV+PL.exe
PID 1108 wrote to memory of 1620	1108	shipping document INV+PL.exe	shipping document INV+PL.exe
PID 1108 wrote to memory of 1620	1108	shipping document INV+PL.exe	shipping document INV+PL.exe
PID 1108 wrote to memory of 1620	1108	shipping document INV+PL.exe	shipping document INV+PL.exe
PID 1108 wrote to memory of 1620	1108	shipping document INV+PL.exe	shipping document INV+PL.exe
PID 1108 wrote to memory of 1620	1108	shipping document INV+PL.exe	shipping document INV+PL.exe
PID 1108 wrote to memory of 1620	1108	shipping document INV+PL.exe	shipping document INV+PL.exe
PID 1284 wrote to memory of 388	1284	Explorer.EXE	netsh.exe
PID 1284 wrote to memory of 388	1284	Explorer.EXE	netsh.exe
PID 1284 wrote to memory of 388	1284	Explorer.EXE	netsh.exe
PID 1284 wrote to memory of 388	1284	Explorer.EXE	netsh.exe
PID 388 wrote to memory of 1044	388	netsh.exe	cmd.exe
PID 388 wrote to memory of 1044	388	netsh.exe	cmd.exe
PID 388 wrote to memory of 1044	388	netsh.exe	cmd.exe
PID 388 wrote to memory of 1044	388	netsh.exe	cmd.exe
PID 388 wrote to memory of 1940	388	netsh.exe	Firefox.exe
PID 388 wrote to memory of 1940	388	netsh.exe	Firefox.exe
PID 388 wrote to memory of 1940	388	netsh.exe	Firefox.exe
PID 388 wrote to memory of 1940	388	netsh.exe	Firefox.exe
PID 388 wrote to memory of 1940	388	netsh.exe	Firefox.exe

Suspicious behavior: MapViewOfSection 7 IoCs

Processes:

shipping document INV+PL.exenetsh.exe

pid	process
1620	shipping document INV+PL.exe
1620	shipping document INV+PL.exe
1620	shipping document INV+PL.exe
388	netsh.exe
388	netsh.exe
388	netsh.exe
388	netsh.exe

Formbook Payload 4 IoCs

rat

Processes:

resource	yara_rule
behavioral1/memory/1620-2-0x0000000000400000-0x000000000042E000-memory.dmp	formbook
behavioral1/memory/1620-2-0x0000000000400000-0x000000000042E000-memory.dmp	formbook
behavioral1/memory/1620-3-0x000000000041ED40-mapping.dmp	formbook
behavioral1/memory/388-4-0x0000000000000000-mapping.dmp	formbook

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

netsh.exe

description	ioc	process
Key created	\Registry\Machine\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run	netsh.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\XZWT4RBPT = "C:\\Program Files (x86)\\Cabc\\gdijlzx.exe"	netsh.exe

Checks whether UAC is enabled 1 TTPs 1 IoCs
evasion trojan

System Information Discovery
T1082

Processes:

Explorer.EXE

description ioc process

Key value queried \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA Explorer.EXE

description	ioc	process
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	Explorer.EXE

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of SendNotifyMessage
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
- Suspicious use of WriteProcessMemory
- Checks whether UAC is enabled
PID:1284

C:\Users\Admin\AppData\Local\Temp\shipping document INV+PL.exe
"C:\Users\Admin\AppData\Local\Temp\shipping document INV+PL.exe"
2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1108

C:\Users\Admin\AppData\Local\Temp\shipping document INV+PL.exe
"{path}"
3⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious behavior: MapViewOfSection
PID:1620

C:\Windows\SysWOW64\netsh.exe
"C:\Windows\SysWOW64\netsh.exe"
2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetThreadContext
- Drops file in Program Files directory
- Suspicious use of AdjustPrivilegeToken
- Modifies Internet Explorer settings
- Suspicious use of WriteProcessMemory
- Suspicious behavior: MapViewOfSection
- Adds Run key to start application
PID:388

C:\Windows\SysWOW64\cmd.exe
/c del "C:\Users\Admin\AppData\Local\Temp\shipping document INV+PL.exe"
3⤵
- Deletes itself
PID:1044

C:\Program Files\Mozilla Firefox\Firefox.exe
"C:\Program Files\Mozilla Firefox\Firefox.exe"
3⤵
PID:1940

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

2

T1112

Credential Access

Credentials in Files

1

T1081

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Data from Local System

1

T1005

Exfiltration

Command and Control

Impact

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Downloads

C:\Users\Admin\AppData\Roaming\6N481R46\6N4logim.jpeg

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C:\Users\Admin\AppData\Roaming\6N481R46\6N4logrf.ini

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C:\Users\Admin\AppData\Roaming\6N481R46\6N4logri.ini

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C:\Users\Admin\AppData\Roaming\6N481R46\6N4logrv.ini

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memory/388-7-0x0000000003120000-0x0000000003294000-memory.dmp

Filesize
1.5MB

Download
memory/388-8-0x0000000075DC0000-0x0000000075DCC000-memory.dmp

Filesize
48KB

Download
memory/388-9-0x00000000754C0000-0x00000000755DD000-memory.dmp

Filesize
1.1MB

Download
memory/388-5-0x0000000001330000-0x000000000134B000-memory.dmp

Filesize
108KB

Download
memory/388-4-0x0000000000000000-mapping.dmp

Download
memory/1044-6-0x0000000000000000-mapping.dmp

Download
memory/1108-1-0x0000000000000000-0x0000000000000000-disk.dmp

Download
memory/1620-3-0x000000000041ED40-mapping.dmp

Download
memory/1620-2-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download
memory/1940-10-0x0000000000000000-mapping.dmp

Download
memory/1940-11-0x000000013F6F0000-0x000000013F783000-memory.dmp

Filesize
588KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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