formbook | 2ad4a02a1f907b8036b9bea0fd940bfb47435964b23ffae577080823c86500dd

General

Target

Confirmation Copy 11.exe
Size

520KB
MD5

9d317210a5afb36bb85856718b96e1ef
SHA1

e5cf4b696cb785b825322f84cf66c299c27f4068
SHA256

2ad4a02a1f907b8036b9bea0fd940bfb47435964b23ffae577080823c86500dd
SHA512

5d67f53a63d1cd20af6073b16dff41d41922a0b680c041d52364c08528280a399851612cfb7190f96e5788e94eec7d967e53bb4643db06cc475f380a8e02deba

Score

10^/10

rat persistence spyware evasion trojan stealer formbook

Malware Config

Signatures

Suspicious behavior: EnumeratesProcesses 23 IoCs

Processes:

Confirmation Copy 11.exeConfirmation Copy 11.exesvchost.exe

pid	process
896	Confirmation Copy 11.exe
896	Confirmation Copy 11.exe
1076	Confirmation Copy 11.exe
1076	Confirmation Copy 11.exe
1664	svchost.exe
1664	svchost.exe
1664	svchost.exe
1664	svchost.exe
1664	svchost.exe
1664	svchost.exe
1664	svchost.exe
1664	svchost.exe
1664	svchost.exe
1664	svchost.exe
1664	svchost.exe
1664	svchost.exe
1664	svchost.exe
1664	svchost.exe
1664	svchost.exe
1664	svchost.exe
1664	svchost.exe
1664	svchost.exe
1664	svchost.exe

Suspicious use of SetThreadContext 3 IoCs

Processes:

Confirmation Copy 11.exeConfirmation Copy 11.exesvchost.exe

description	pid	process	target process
PID 896 set thread context of 1076	896	Confirmation Copy 11.exe	Confirmation Copy 11.exe
PID 1076 set thread context of 1276	1076	Confirmation Copy 11.exe	Explorer.EXE
PID 1664 set thread context of 1276	1664	svchost.exe	Explorer.EXE

Suspicious behavior: MapViewOfSection 7 IoCs

Processes:

Confirmation Copy 11.exesvchost.exe

pid	process
1076	Confirmation Copy 11.exe
1076	Confirmation Copy 11.exe
1076	Confirmation Copy 11.exe
1664	svchost.exe
1664	svchost.exe
1664	svchost.exe
1664	svchost.exe

Drops file in Program Files directory 1 IoCs

Processes:

svchost.exe

description ioc process

File opened for modification C:\Program Files (x86)\Nohld5z\regsvczt80d.exe svchost.exe

description	ioc	process
File opened for modification	C:\Program Files (x86)\Nohld5z\regsvczt80d.exe	svchost.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

Confirmation Copy 11.exeConfirmation Copy 11.exesvchost.exe

description	pid	process
Token: SeDebugPrivilege	896	Confirmation Copy 11.exe
Token: SeDebugPrivilege	1076	Confirmation Copy 11.exe
Token: SeDebugPrivilege	1664	svchost.exe

Deletes itself 1 IoCs

Processes:

cmd.exe

pid process

1848 cmd.exe
Suspicious use of FindShellTrayWindow 5 IoCs

Processes:

Explorer.EXE

pid process

1276 Explorer.EXE
1276 Explorer.EXE
1276 Explorer.EXE
1276 Explorer.EXE
1276 Explorer.EXE
Suspicious use of SendNotifyMessage 4 IoCs

Processes:

Explorer.EXE

pid process

1276 Explorer.EXE
1276 Explorer.EXE
1276 Explorer.EXE
1276 Explorer.EXE

pid	process
1848	cmd.exe

pid	process
1276	Explorer.EXE
1276	Explorer.EXE
1276	Explorer.EXE
1276	Explorer.EXE
1276	Explorer.EXE

pid	process
1276	Explorer.EXE
1276	Explorer.EXE
1276	Explorer.EXE
1276	Explorer.EXE

Formbook Payload 4 IoCs

rat

Processes:

resource	yara_rule
behavioral1/memory/1076-3-0x0000000000400000-0x000000000042D000-memory.dmp	formbook
behavioral1/memory/1076-3-0x0000000000400000-0x000000000042D000-memory.dmp	formbook
behavioral1/memory/1076-4-0x000000000041E350-mapping.dmp	formbook
behavioral1/memory/1664-5-0x0000000000000000-mapping.dmp	formbook

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

svchost.exe

description	ioc	process
Key created	\Registry\Machine\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run	svchost.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\AJLHZLEH = "C:\\Program Files (x86)\\Nohld5z\\regsvczt80d.exe"	svchost.exe

Modifies Internet Explorer settings 1 TTPs 1 IoCs

adware spyware

Modify Registry

T1112

Processes:

svchost.exe

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

Suspicious use of WriteProcessMemory 20 IoCs

Processes:

Confirmation Copy 11.exeExplorer.EXEsvchost.exe

description	pid	process	target process
PID 896 wrote to memory of 1076	896	Confirmation Copy 11.exe	Confirmation Copy 11.exe
PID 896 wrote to memory of 1076	896	Confirmation Copy 11.exe	Confirmation Copy 11.exe
PID 896 wrote to memory of 1076	896	Confirmation Copy 11.exe	Confirmation Copy 11.exe
PID 896 wrote to memory of 1076	896	Confirmation Copy 11.exe	Confirmation Copy 11.exe
PID 896 wrote to memory of 1076	896	Confirmation Copy 11.exe	Confirmation Copy 11.exe
PID 896 wrote to memory of 1076	896	Confirmation Copy 11.exe	Confirmation Copy 11.exe
PID 896 wrote to memory of 1076	896	Confirmation Copy 11.exe	Confirmation Copy 11.exe
PID 1276 wrote to memory of 1664	1276	Explorer.EXE	svchost.exe
PID 1276 wrote to memory of 1664	1276	Explorer.EXE	svchost.exe
PID 1276 wrote to memory of 1664	1276	Explorer.EXE	svchost.exe
PID 1276 wrote to memory of 1664	1276	Explorer.EXE	svchost.exe
PID 1664 wrote to memory of 1848	1664	svchost.exe	cmd.exe
PID 1664 wrote to memory of 1848	1664	svchost.exe	cmd.exe
PID 1664 wrote to memory of 1848	1664	svchost.exe	cmd.exe
PID 1664 wrote to memory of 1848	1664	svchost.exe	cmd.exe
PID 1664 wrote to memory of 1608	1664	svchost.exe	Firefox.exe
PID 1664 wrote to memory of 1608	1664	svchost.exe	Firefox.exe
PID 1664 wrote to memory of 1608	1664	svchost.exe	Firefox.exe
PID 1664 wrote to memory of 1608	1664	svchost.exe	Firefox.exe
PID 1664 wrote to memory of 1608	1664	svchost.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
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
Formbook
Formbook is a data stealing malware which is capable of stealing data.
trojan spyware stealer formbook

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 FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of WriteProcessMemory
- Checks whether UAC is enabled
PID:1276

C:\Users\Admin\AppData\Local\Temp\Confirmation Copy 11.exe
"C:\Users\Admin\AppData\Local\Temp\Confirmation Copy 11.exe"
2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:896

C:\Users\Admin\AppData\Local\Temp\Confirmation Copy 11.exe
"{path}"
3⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetThreadContext
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
PID:1076

C:\Windows\SysWOW64\svchost.exe
"C:\Windows\SysWOW64\svchost.exe"
2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetThreadContext
- Suspicious behavior: MapViewOfSection
- Drops file in Program Files directory
- Suspicious use of AdjustPrivilegeToken
- Adds Run key to start application
- Modifies Internet Explorer settings
- Suspicious use of WriteProcessMemory
PID:1664

C:\Windows\SysWOW64\cmd.exe
/c del "C:\Users\Admin\AppData\Local\Temp\Confirmation Copy 11.exe"
3⤵
- Deletes itself
PID:1848

C:\Program Files\Mozilla Firefox\Firefox.exe
"C:\Program Files\Mozilla Firefox\Firefox.exe"
3⤵
PID:1608

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\4L7-RCTU\4L7logim.jpeg

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C:\Users\Admin\AppData\Roaming\4L7-RCTU\4L7logrf.ini

Download Submit
C:\Users\Admin\AppData\Roaming\4L7-RCTU\4L7logri.ini

Download Submit
C:\Users\Admin\AppData\Roaming\4L7-RCTU\4L7logrv.ini

Download Submit
memory/896-1-0x0000000000000000-0x0000000000000000-disk.dmp

Download
memory/1076-3-0x0000000000400000-0x000000000042D000-memory.dmp

Filesize
180KB

Download
memory/1076-4-0x000000000041E350-mapping.dmp

Download
memory/1608-11-0x000000013FA70000-0x000000013FB03000-memory.dmp

Filesize
588KB

Download
memory/1608-10-0x0000000000000000-mapping.dmp

Download
memory/1664-5-0x0000000000000000-mapping.dmp

Download
memory/1664-9-0x0000000003860000-0x00000000039C5000-memory.dmp

Filesize
1.4MB

Download
memory/1664-8-0x00000000006D0000-0x0000000000846000-memory.dmp

Filesize
1.5MB

Download
memory/1664-6-0x00000000006C0000-0x00000000006C8000-memory.dmp

Filesize
32KB

Download
memory/1848-7-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads