formbook | bf9fd5adc66ebd40de81eda76543a9b798ad480aab0d0316e7d13a6d51525816

General

Target

a48efe002e755fc23f7275abd4ce400b.exe
Size

303KB
MD5

a48efe002e755fc23f7275abd4ce400b
SHA1

7cb214b2dc8b861e6ee26ac120e494d43035813b
SHA256

bf9fd5adc66ebd40de81eda76543a9b798ad480aab0d0316e7d13a6d51525816
SHA512

7b8bea89127a5584792e90de20fa8b72867065a3394c4f8065a312e9b273611a3d362c420ea1ea3210d523131e740bcdf7de7a847afba60d6dc98f58e70e178a

Score

10^/10

persistence spyware trojan stealer formbook

Malware Config

Signatures

Suspicious use of AdjustPrivilegeToken 8 IoCs

Processes:

cmd.exenetsh.exeExplorer.EXE

description	pid	process
Token: SeDebugPrivilege	552	cmd.exe
Token: SeDebugPrivilege	2208	netsh.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

Adds Run entry to policy 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\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run	netsh.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run\YD8LEPXHQZC = "C:\\Program Files (x86)\\Rxprtq\\hlsohehb.exe"	netsh.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-1-5-21-1231583446-2617009595-2137880041-1000\SOFTWARE\Microsoft\Internet Explorer\IntelliForms\Storage2	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
Drops file in Program Files directory 1 IoCs

Processes:

netsh.exe

description ioc process

File opened for modification C:\Program Files (x86)\Rxprtq\hlsohehb.exe netsh.exe
Formbook
Formbook is a data stealing malware which is capable of stealing data.
trojan spyware stealer formbook
Loads dropped DLL 1 IoCs

Processes:

rundll32.exe

pid process

412 rundll32.exe
Suspicious behavior: MapViewOfSection 6 IoCs

Processes:

rundll32.execmd.exenetsh.exe

pid process

412 rundll32.exe
552 cmd.exe
552 cmd.exe
552 cmd.exe
2208 netsh.exe
2208 netsh.exe

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

Suspicious use of SetThreadContext 2 IoCs

Processes:

cmd.exenetsh.exe

description	pid	process	target process
PID 552 set thread context of 2996	552	cmd.exe	Explorer.EXE
PID 2208 set thread context of 2996	2208	netsh.exe	Explorer.EXE

System policy modification 1 TTPs 1 IoCs
evasion

Modify Registry
T1112

Processes:

netsh.exe

description ioc process

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

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

Suspicious use of WriteProcessMemory 91 IoCs

Processes:

a48efe002e755fc23f7275abd4ce400b.exerundll32.exe

description	pid	process	target process
PID 3848 wrote to memory of 412	3848	a48efe002e755fc23f7275abd4ce400b.exe	rundll32.exe
PID 3848 wrote to memory of 412	3848	a48efe002e755fc23f7275abd4ce400b.exe	rundll32.exe
PID 3848 wrote to memory of 412	3848	a48efe002e755fc23f7275abd4ce400b.exe	rundll32.exe
PID 412 wrote to memory of 552	412	rundll32.exe	cmd.exe
PID 412 wrote to memory of 552	412	rundll32.exe	cmd.exe
PID 412 wrote to memory of 552	412	rundll32.exe	cmd.exe
PID 412 wrote to memory of 552	412	rundll32.exe	cmd.exe
PID 412 wrote to memory of 552	412	rundll32.exe	cmd.exe
PID 412 wrote to memory of 552	412	rundll32.exe	cmd.exe
PID 412 wrote to memory of 552	412	rundll32.exe	cmd.exe
PID 412 wrote to memory of 552	412	rundll32.exe	cmd.exe
PID 412 wrote to memory of 552	412	rundll32.exe	cmd.exe
PID 412 wrote to memory of 552	412	rundll32.exe	cmd.exe
PID 412 wrote to memory of 552	412	rundll32.exe	cmd.exe
PID 412 wrote to memory of 552	412	rundll32.exe	cmd.exe
PID 412 wrote to memory of 552	412	rundll32.exe	cmd.exe
PID 412 wrote to memory of 552	412	rundll32.exe	cmd.exe
PID 412 wrote to memory of 552	412	rundll32.exe	cmd.exe
PID 412 wrote to memory of 552	412	rundll32.exe	cmd.exe
PID 412 wrote to memory of 552	412	rundll32.exe	cmd.exe
PID 412 wrote to memory of 552	412	rundll32.exe	cmd.exe
PID 412 wrote to memory of 552	412	rundll32.exe	cmd.exe
PID 412 wrote to memory of 552	412	rundll32.exe	cmd.exe
PID 412 wrote to memory of 552	412	rundll32.exe	cmd.exe
PID 412 wrote to memory of 552	412	rundll32.exe	cmd.exe
PID 412 wrote to memory of 552	412	rundll32.exe	cmd.exe
PID 412 wrote to memory of 552	412	rundll32.exe	cmd.exe
PID 412 wrote to memory of 552	412	rundll32.exe	cmd.exe
PID 412 wrote to memory of 552	412	rundll32.exe	cmd.exe
PID 412 wrote to memory of 552	412	rundll32.exe	cmd.exe
PID 412 wrote to memory of 552	412	rundll32.exe	cmd.exe
PID 412 wrote to memory of 552	412	rundll32.exe	cmd.exe
PID 412 wrote to memory of 552	412	rundll32.exe	cmd.exe
PID 412 wrote to memory of 552	412	rundll32.exe	cmd.exe
PID 412 wrote to memory of 552	412	rundll32.exe	cmd.exe
PID 412 wrote to memory of 552	412	rundll32.exe	cmd.exe
PID 412 wrote to memory of 552	412	rundll32.exe	cmd.exe
PID 412 wrote to memory of 552	412	rundll32.exe	cmd.exe
PID 412 wrote to memory of 552	412	rundll32.exe	cmd.exe
PID 412 wrote to memory of 552	412	rundll32.exe	cmd.exe
PID 412 wrote to memory of 552	412	rundll32.exe	cmd.exe
PID 412 wrote to memory of 552	412	rundll32.exe	cmd.exe
PID 412 wrote to memory of 552	412	rundll32.exe	cmd.exe
PID 412 wrote to memory of 552	412	rundll32.exe	cmd.exe
PID 412 wrote to memory of 552	412	rundll32.exe	cmd.exe
PID 412 wrote to memory of 552	412	rundll32.exe	cmd.exe
PID 412 wrote to memory of 552	412	rundll32.exe	cmd.exe
PID 412 wrote to memory of 552	412	rundll32.exe	cmd.exe
PID 412 wrote to memory of 552	412	rundll32.exe	cmd.exe
PID 412 wrote to memory of 552	412	rundll32.exe	cmd.exe
PID 412 wrote to memory of 552	412	rundll32.exe	cmd.exe
PID 412 wrote to memory of 552	412	rundll32.exe	cmd.exe
PID 412 wrote to memory of 552	412	rundll32.exe	cmd.exe
PID 412 wrote to memory of 552	412	rundll32.exe	cmd.exe
PID 412 wrote to memory of 552	412	rundll32.exe	cmd.exe
PID 412 wrote to memory of 552	412	rundll32.exe	cmd.exe
PID 412 wrote to memory of 552	412	rundll32.exe	cmd.exe
PID 412 wrote to memory of 552	412	rundll32.exe	cmd.exe
PID 412 wrote to memory of 552	412	rundll32.exe	cmd.exe
PID 412 wrote to memory of 552	412	rundll32.exe	cmd.exe
PID 412 wrote to memory of 552	412	rundll32.exe	cmd.exe
PID 412 wrote to memory of 552	412	rundll32.exe	cmd.exe
PID 412 wrote to memory of 552	412	rundll32.exe	cmd.exe
PID 412 wrote to memory of 552	412	rundll32.exe	cmd.exe

Suspicious behavior: EnumeratesProcesses 49 IoCs

Processes:

rundll32.execmd.exenetsh.exe

pid	process
412	rundll32.exe
552	cmd.exe
552	cmd.exe
552	cmd.exe
552	cmd.exe
2208	netsh.exe
2208	netsh.exe
2208	netsh.exe
2208	netsh.exe
2208	netsh.exe
2208	netsh.exe
2208	netsh.exe
2208	netsh.exe
2208	netsh.exe
2208	netsh.exe
2208	netsh.exe
2208	netsh.exe
2208	netsh.exe
2208	netsh.exe
2208	netsh.exe
2208	netsh.exe
2208	netsh.exe
2208	netsh.exe
2208	netsh.exe
2208	netsh.exe
2208	netsh.exe
2208	netsh.exe
2208	netsh.exe
2208	netsh.exe
2208	netsh.exe
2208	netsh.exe
2208	netsh.exe
2208	netsh.exe
2208	netsh.exe
2208	netsh.exe
2208	netsh.exe
2208	netsh.exe
2208	netsh.exe
2208	netsh.exe
2208	netsh.exe
2208	netsh.exe
2208	netsh.exe
2208	netsh.exe
2208	netsh.exe
2208	netsh.exe
2208	netsh.exe
2208	netsh.exe
2208	netsh.exe
2208	netsh.exe

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

C:\Users\Admin\AppData\Local\Temp\a48efe002e755fc23f7275abd4ce400b.exe
"C:\Users\Admin\AppData\Local\Temp\a48efe002e755fc23f7275abd4ce400b.exe"
2⤵
- Suspicious use of WriteProcessMemory
PID:3848

C:\Windows\SysWOW64\rundll32.exe
C:\Windows\system32\rundll32.exe Fireside,Pretor
3⤵
- Loads dropped DLL
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
- Suspicious behavior: EnumeratesProcesses
PID:412

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\system32\cmd.exe"
4⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious behavior: MapViewOfSection
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
PID:552

C:\Windows\SysWOW64\netsh.exe
"C:\Windows\SysWOW64\netsh.exe"
2⤵
- Suspicious use of AdjustPrivilegeToken
- Adds Run entry to policy start application
- Modifies Internet Explorer settings
- Drops file in Program Files directory
- Suspicious behavior: MapViewOfSection
- Suspicious use of SetThreadContext
- System policy modification
- Suspicious behavior: EnumeratesProcesses
PID:2208

C:\Windows\SysWOW64\cmd.exe
/c del "C:\Windows\SysWOW64\cmd.exe"
3⤵
PID:2604

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:2012

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\Local\Temp\Fireside.DLL

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

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\Users\Admin\AppData\Local\Temp\Fireside.dll

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memory/412-0-0x0000000000000000-mapping.dmp

Download
memory/552-4-0x0000000000000000-mapping.dmp

Download
memory/2012-10-0x0000000000000000-mapping.dmp

Download
memory/2208-5-0x0000000000000000-mapping.dmp

Download
memory/2208-6-0x0000000001590000-0x00000000015AE000-memory.dmp

Filesize
120KB

Download
memory/2208-7-0x0000000001590000-0x00000000015AE000-memory.dmp

Filesize
120KB

Download
memory/2604-8-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads