formbook | 7369dcfec21741f712f75662e29752b6a55fcacd1fbf76b9948d40b82e89b9a0

General

Target

Ekstre.exe
Size

499KB
MD5

fe599cbeeae671dd2e7684bd0cce9289
SHA1

3b06b72d997fb3154d946e4f43b2e03977e96a92
SHA256

7369dcfec21741f712f75662e29752b6a55fcacd1fbf76b9948d40b82e89b9a0
SHA512

a34118abba227266ecbcdffcc3c77701efcb1be6b67a2a6f1b770f7d253cfb5868f0309d4ee28ff7596f5bcd41b0502a8df8fda080633bf8bbae417639334d22

Score

10^/10

trojan spyware stealer formbook persistence

Malware Config

Signatures

Modifies Internet Explorer settings 1 TTPs 1 IoCs

adware spyware

Modify Registry

T1112

Processes:

msiexec.exe

description	ioc	process
Key created	\Registry\User\S-1-5-21-2066881839-3229799743-3576549721-1000\SOFTWARE\Microsoft\Internet Explorer\IntelliForms\Storage2	msiexec.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

Maps connected drives based on registry 3 TTPs 2 IoCs

Disk information is often read in order to detect sandboxing environments.

Query Registry

T1012

Peripheral Device Discovery

T1120

System Information Discovery

T1082

Processes:

Ekstre.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum	Ekstre.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum\0	Ekstre.exe

System policy modification 1 TTPs 1 IoCs
evasion

Modify Registry
T1112

Processes:

msiexec.exe

description ioc process

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

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

Suspicious use of WriteProcessMemory 18 IoCs

Processes:

Ekstre.exeExplorer.EXEmsiexec.exe

description	pid	process	target process
PID 3920 wrote to memory of 3176	3920	Ekstre.exe	Ekstre.exe
PID 3920 wrote to memory of 3176	3920	Ekstre.exe	Ekstre.exe
PID 3920 wrote to memory of 3176	3920	Ekstre.exe	Ekstre.exe
PID 3920 wrote to memory of 3176	3920	Ekstre.exe	Ekstre.exe
PID 3920 wrote to memory of 3176	3920	Ekstre.exe	Ekstre.exe
PID 3920 wrote to memory of 3176	3920	Ekstre.exe	Ekstre.exe
PID 2988 wrote to memory of 2556	2988	Explorer.EXE	msiexec.exe
PID 2988 wrote to memory of 2556	2988	Explorer.EXE	msiexec.exe
PID 2988 wrote to memory of 2556	2988	Explorer.EXE	msiexec.exe
PID 2556 wrote to memory of 732	2556	msiexec.exe	cmd.exe
PID 2556 wrote to memory of 732	2556	msiexec.exe	cmd.exe
PID 2556 wrote to memory of 732	2556	msiexec.exe	cmd.exe
PID 2556 wrote to memory of 1732	2556	msiexec.exe	cmd.exe
PID 2556 wrote to memory of 1732	2556	msiexec.exe	cmd.exe
PID 2556 wrote to memory of 1732	2556	msiexec.exe	cmd.exe
PID 2556 wrote to memory of 2088	2556	msiexec.exe	Firefox.exe
PID 2556 wrote to memory of 2088	2556	msiexec.exe	Firefox.exe
PID 2556 wrote to memory of 2088	2556	msiexec.exe	Firefox.exe

Suspicious behavior: MapViewOfSection 8 IoCs

Processes:

Ekstre.exemsiexec.exe

pid process

3176 Ekstre.exe
3176 Ekstre.exe
3176 Ekstre.exe
3176 Ekstre.exe
2556 msiexec.exe
2556 msiexec.exe
2556 msiexec.exe
2556 msiexec.exe
Formbook
Formbook is a data stealing malware which is capable of stealing data.
trojan spyware stealer formbook

Suspicious use of SetThreadContext 4 IoCs

Processes:

Ekstre.exeEkstre.exemsiexec.exe

description	pid	process	target process
PID 3920 set thread context of 3176	3920	Ekstre.exe	Ekstre.exe
PID 3176 set thread context of 2988	3176	Ekstre.exe	Explorer.EXE
PID 3176 set thread context of 2988	3176	Ekstre.exe	Explorer.EXE
PID 2556 set thread context of 2988	2556	msiexec.exe	Explorer.EXE

Adds Run entry to policy start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

msiexec.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run	msiexec.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run\2DJD4RBPUBOT = "C:\\Program Files (x86)\\Hbpx\\helpwrqlmdix.exe"	msiexec.exe

Drops file in Program Files directory 1 IoCs

Processes:

msiexec.exe

description ioc process

File opened for modification C:\Program Files (x86)\Hbpx\helpwrqlmdix.exe msiexec.exe

description	ioc	process
File opened for modification	C:\Program Files (x86)\Hbpx\helpwrqlmdix.exe	msiexec.exe

Checks BIOS information in registry 2 TTPs 2 IoCs

BIOS information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

Processes:

Ekstre.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	Ekstre.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	Ekstre.exe

Looks for VMWare Tools registry key 2 TTPs 1 IoCs

Query Registry
T1012

System Information Discovery
T1082

Processes:

Ekstre.exe

description ioc process

Key opened \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\VMware, Inc.\VMware Tools Ekstre.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\VMware, Inc.\VMware Tools	Ekstre.exe

Suspicious behavior: EnumeratesProcesses 42 IoCs

Processes:

Ekstre.exemsiexec.exe

pid	process
3176	Ekstre.exe
3176	Ekstre.exe
3176	Ekstre.exe
3176	Ekstre.exe
3176	Ekstre.exe
3176	Ekstre.exe
2556	msiexec.exe
2556	msiexec.exe
2556	msiexec.exe
2556	msiexec.exe
2556	msiexec.exe
2556	msiexec.exe
2556	msiexec.exe
2556	msiexec.exe
2556	msiexec.exe
2556	msiexec.exe
2556	msiexec.exe
2556	msiexec.exe
2556	msiexec.exe
2556	msiexec.exe
2556	msiexec.exe
2556	msiexec.exe
2556	msiexec.exe
2556	msiexec.exe
2556	msiexec.exe
2556	msiexec.exe
2556	msiexec.exe
2556	msiexec.exe
2556	msiexec.exe
2556	msiexec.exe
2556	msiexec.exe
2556	msiexec.exe
2556	msiexec.exe
2556	msiexec.exe
2556	msiexec.exe
2556	msiexec.exe
2556	msiexec.exe
2556	msiexec.exe
2556	msiexec.exe
2556	msiexec.exe
2556	msiexec.exe
2556	msiexec.exe

Suspicious use of AdjustPrivilegeToken 10 IoCs

Processes:

Ekstre.exemsiexec.exeExplorer.EXE

description	pid	process
Token: SeDebugPrivilege	3176	Ekstre.exe
Token: SeDebugPrivilege	2556	msiexec.exe
Token: SeShutdownPrivilege	2988	Explorer.EXE
Token: SeCreatePagefilePrivilege	2988	Explorer.EXE
Token: SeShutdownPrivilege	2988	Explorer.EXE
Token: SeCreatePagefilePrivilege	2988	Explorer.EXE
Token: SeShutdownPrivilege	2988	Explorer.EXE
Token: SeCreatePagefilePrivilege	2988	Explorer.EXE
Token: SeShutdownPrivilege	2988	Explorer.EXE
Token: SeCreatePagefilePrivilege	2988	Explorer.EXE

Looks for VirtualBox Guest Additions in registry 2 TTPs 1 IoCs

Query Registry
T1012

System Information Discovery
T1082

Processes:

Ekstre.exe

description ioc process

Key opened \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Oracle\VirtualBox Guest Additions Ekstre.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Oracle\VirtualBox Guest Additions	Ekstre.exe

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of WriteProcessMemory
- Suspicious use of AdjustPrivilegeToken
PID:2988

C:\Users\Admin\AppData\Local\Temp\Ekstre.exe
"C:\Users\Admin\AppData\Local\Temp\Ekstre.exe"
2⤵
- Maps connected drives based on registry
- Suspicious use of WriteProcessMemory
- Suspicious use of SetThreadContext
- Checks BIOS information in registry
- Looks for VMWare Tools registry key
- Looks for VirtualBox Guest Additions in registry
PID:3920

C:\Users\Admin\AppData\Local\Temp\Ekstre.exe
"{path}"
3⤵
- Suspicious behavior: MapViewOfSection
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:3176

C:\Windows\SysWOW64\msiexec.exe
"C:\Windows\SysWOW64\msiexec.exe"
2⤵
- Modifies Internet Explorer settings
- System policy modification
- Suspicious use of WriteProcessMemory
- Suspicious behavior: MapViewOfSection
- Suspicious use of SetThreadContext
- Adds Run entry to policy start application
- Drops file in Program Files directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:2556

C:\Windows\SysWOW64\cmd.exe
/c del "C:\Users\Admin\AppData\Local\Temp\Ekstre.exe"
3⤵
PID:732

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:1732

C:\Program Files\Mozilla Firefox\Firefox.exe
"C:\Program Files\Mozilla Firefox\Firefox.exe"
3⤵
PID:2088

Network

MITRE ATT&CK Enterprise 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

Peripheral Device Discovery

Query Registry

System Information Discovery

4

T1082

Lateral Movement

Collection

Data from Local System

1

T1005

Command and Control

Exfiltration

Impact

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Downloads

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

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C:\Users\Admin\AppData\Roaming\924288DA\924logim.jpeg

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C:\Users\Admin\AppData\Roaming\924288DA\924logrf.ini

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C:\Users\Admin\AppData\Roaming\924288DA\924logrg.ini

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C:\Users\Admin\AppData\Roaming\924288DA\924logri.ini

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C:\Users\Admin\AppData\Roaming\924288DA\924logrv.ini

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memory/732-6-0x0000000000000000-mapping.dmp

Download
memory/1732-9-0x0000000000000000-mapping.dmp

Download
memory/2088-13-0x00007FF74F010000-0x00007FF74F0A3000-memory.dmp

Filesize
588KB

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memory/2088-12-0x0000000000000000-mapping.dmp

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memory/2088-14-0x00007FF74F010000-0x00007FF74F0A3000-memory.dmp

Filesize
588KB

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memory/2088-15-0x00007FF74F010000-0x00007FF74F0A3000-memory.dmp

Filesize
588KB

Download
memory/2556-7-0x0000000004510000-0x0000000004680000-memory.dmp

Filesize
1.4MB

Download
memory/2556-11-0x0000000006350000-0x000000000642B000-memory.dmp

Filesize
876KB

Download
memory/2556-5-0x00000000010F0000-0x0000000001102000-memory.dmp

Filesize
72KB

Download
memory/2556-4-0x00000000010F0000-0x0000000001102000-memory.dmp

Filesize
72KB

Download
memory/2556-3-0x0000000000000000-mapping.dmp

Download
memory/3176-0-0x0000000000400000-0x000000000042D000-memory.dmp

Filesize
180KB

Download
memory/3176-1-0x000000000041E2F0-mapping.dmp

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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