formbook | d2e60c3bec22bb8dc8e990920648725abd8ffdc1925dee26ed8c8187dd7504c1

General

Target

PO8397234.exe
Size

293KB
MD5

38bcdd78a3aa9a815e7c5b09ffcafa1a
SHA1

125cab05a33197836b43307160177917027d9f96
SHA256

d2e60c3bec22bb8dc8e990920648725abd8ffdc1925dee26ed8c8187dd7504c1
SHA512

cbaedc53feb55139e952187bcfe3cd74461591419b31babd5124567cec04aedefbf6b7dad21dcc4aedac47ee5aec0a8e3762e9ba34ab44ceaef58a883c34e186

Score

10^/10

persistence trojan spyware stealer formbook

Malware Config

Signatures

Suspicious use of SetThreadContext 3 IoCs

Processes:

PO8397234.exePO8397234.exewlanext.exe

description	pid	process	target process
PID 240 set thread context of 1848	240	PO8397234.exe	PO8397234.exe
PID 1848 set thread context of 1304	1848	PO8397234.exe	Explorer.EXE
PID 1728 set thread context of 1304	1728	wlanext.exe	Explorer.EXE

Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

PO8397234.exewlanext.exe

description pid process

Token: SeDebugPrivilege 1848 PO8397234.exe
Token: SeDebugPrivilege 1728 wlanext.exe
Deletes itself 1 IoCs

Processes:

cmd.exe

pid process

1752 cmd.exe
Suspicious use of FindShellTrayWindow 4 IoCs

Processes:

Explorer.EXE

pid process

1304 Explorer.EXE
1304 Explorer.EXE
1304 Explorer.EXE
1304 Explorer.EXE

description	pid	process
Token: SeDebugPrivilege	1848	PO8397234.exe
Token: SeDebugPrivilege	1728	wlanext.exe

pid	process
1752	cmd.exe

pid	process
1304	Explorer.EXE
1304	Explorer.EXE
1304	Explorer.EXE
1304	Explorer.EXE

Adds Run entry to policy start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

wlanext.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run	wlanext.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run\JPXX3LNHN2Y = "C:\\Program Files (x86)\\Mkv1hb\\win1b7p.exe"	wlanext.exe

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

Suspicious use of WriteProcessMemory 20 IoCs

Processes:

PO8397234.exeExplorer.EXEwlanext.exe

description	pid	process	target process
PID 240 wrote to memory of 1848	240	PO8397234.exe	PO8397234.exe
PID 240 wrote to memory of 1848	240	PO8397234.exe	PO8397234.exe
PID 240 wrote to memory of 1848	240	PO8397234.exe	PO8397234.exe
PID 240 wrote to memory of 1848	240	PO8397234.exe	PO8397234.exe
PID 240 wrote to memory of 1848	240	PO8397234.exe	PO8397234.exe
PID 240 wrote to memory of 1848	240	PO8397234.exe	PO8397234.exe
PID 240 wrote to memory of 1848	240	PO8397234.exe	PO8397234.exe
PID 1304 wrote to memory of 1728	1304	Explorer.EXE	wlanext.exe
PID 1304 wrote to memory of 1728	1304	Explorer.EXE	wlanext.exe
PID 1304 wrote to memory of 1728	1304	Explorer.EXE	wlanext.exe
PID 1304 wrote to memory of 1728	1304	Explorer.EXE	wlanext.exe
PID 1728 wrote to memory of 1752	1728	wlanext.exe	cmd.exe
PID 1728 wrote to memory of 1752	1728	wlanext.exe	cmd.exe
PID 1728 wrote to memory of 1752	1728	wlanext.exe	cmd.exe
PID 1728 wrote to memory of 1752	1728	wlanext.exe	cmd.exe
PID 1728 wrote to memory of 1708	1728	wlanext.exe	Firefox.exe
PID 1728 wrote to memory of 1708	1728	wlanext.exe	Firefox.exe
PID 1728 wrote to memory of 1708	1728	wlanext.exe	Firefox.exe
PID 1728 wrote to memory of 1708	1728	wlanext.exe	Firefox.exe
PID 1728 wrote to memory of 1708	1728	wlanext.exe	Firefox.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 behavior: MapViewOfSection 7 IoCs

Processes:

PO8397234.exewlanext.exe

pid process

1848 PO8397234.exe
1848 PO8397234.exe
1848 PO8397234.exe
1728 wlanext.exe
1728 wlanext.exe
1728 wlanext.exe
1728 wlanext.exe
System policy modification 1 TTPs 1 IoCs
evasion

Modify Registry
T1112

Processes:

wlanext.exe

description ioc process

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

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

Modifies Internet Explorer settings 1 TTPs 1 IoCs

adware spyware

Modify Registry

T1112

Processes:

wlanext.exe

description	ioc	process
Key created	\Registry\User\S-1-5-21-910373003-3952921535-3480519689-1000\SOFTWARE\Microsoft\Internet Explorer\IntelliForms\Storage2	wlanext.exe

Suspicious behavior: EnumeratesProcesses 23 IoCs

Processes:

PO8397234.exewlanext.exe

pid	process
1848	PO8397234.exe
1848	PO8397234.exe
1728	wlanext.exe
1728	wlanext.exe
1728	wlanext.exe
1728	wlanext.exe
1728	wlanext.exe
1728	wlanext.exe
1728	wlanext.exe
1728	wlanext.exe
1728	wlanext.exe
1728	wlanext.exe
1728	wlanext.exe
1728	wlanext.exe
1728	wlanext.exe
1728	wlanext.exe
1728	wlanext.exe
1728	wlanext.exe
1728	wlanext.exe
1728	wlanext.exe
1728	wlanext.exe
1728	wlanext.exe
1728	wlanext.exe

Suspicious use of SendNotifyMessage 4 IoCs

Processes:

Explorer.EXE

pid process

1304 Explorer.EXE
1304 Explorer.EXE
1304 Explorer.EXE
1304 Explorer.EXE
Drops file in Program Files directory 1 IoCs

Processes:

wlanext.exe

description ioc process

File opened for modification C:\Program Files (x86)\Mkv1hb\win1b7p.exe wlanext.exe

pid	process
1304	Explorer.EXE
1304	Explorer.EXE
1304	Explorer.EXE
1304	Explorer.EXE

description	ioc	process
File opened for modification	C:\Program Files (x86)\Mkv1hb\win1b7p.exe	wlanext.exe

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of FindShellTrayWindow
- Suspicious use of WriteProcessMemory
- Suspicious use of SendNotifyMessage
PID:1304

C:\Users\Admin\AppData\Local\Temp\PO8397234.exe
"C:\Users\Admin\AppData\Local\Temp\PO8397234.exe"
2⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:240

C:\Users\Admin\AppData\Local\Temp\PO8397234.exe
"{path}"
3⤵
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious behavior: MapViewOfSection
- Suspicious behavior: EnumeratesProcesses
PID:1848

C:\Windows\SysWOW64\wlanext.exe
"C:\Windows\SysWOW64\wlanext.exe"
2⤵
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Adds Run entry to policy start application
- Suspicious use of WriteProcessMemory
- Suspicious behavior: MapViewOfSection
- System policy modification
- Modifies Internet Explorer settings
- Suspicious behavior: EnumeratesProcesses
- Drops file in Program Files directory
PID:1728

C:\Windows\SysWOW64\cmd.exe
/c del "C:\Users\Admin\AppData\Local\Temp\PO8397234.exe"
3⤵
- Deletes itself
PID:1752

C:\Program Files\Mozilla Firefox\Firefox.exe
"C:\Program Files\Mozilla Firefox\Firefox.exe"
3⤵
PID:1708

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

memory/240-1-0x0000000000000000-0x0000000000000000-disk.dmp

Download
memory/1708-15-0x0000000000000000-mapping.dmp

Download
memory/1708-16-0x000000013F190000-0x000000013F223000-memory.dmp

Filesize
588KB

Download
memory/1728-4-0x0000000000000000-mapping.dmp

Download
memory/1728-5-0x0000000000C30000-0x0000000000C46000-memory.dmp

Filesize
88KB

Download
memory/1728-7-0x0000000000AB0000-0x0000000000C2D000-memory.dmp

Filesize
1.5MB

Download
memory/1728-8-0x00000000754B0000-0x000000007560C000-memory.dmp

Filesize
1.4MB

Download
memory/1728-14-0x0000000003A10000-0x0000000003B8F000-memory.dmp

Filesize
1.5MB

Download
memory/1752-6-0x0000000000000000-mapping.dmp

Download
memory/1848-2-0x0000000000400000-0x0000000000427000-memory.dmp

Filesize
156KB

Download
memory/1848-3-0x000000000041C160-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads