formbook | ee82b7263174f6d14a23263058616fda1c4676cecf6d0003696d255147963e1b

General

Target

nDpCRftIevGVro2.exe
Size

909KB
MD5

99ee30484749b90ac5ca3e2a776a0198
SHA1

ac6b11d0a4ebf636008cf1d39f4889b2c55ae0bc
SHA256

ee82b7263174f6d14a23263058616fda1c4676cecf6d0003696d255147963e1b
SHA512

606727a606b7a95ff1ed285c9b9ac61c4c29e05b5fa48c337ba394e8151c9e96678109203f9df2e20d4bbe16be70674c58a673d4332af1b146e7f80784a36a31

Score

10^/10

persistence spyware trojan stealer formbook

Malware Config

Signatures

Suspicious behavior: MapViewOfSection 5 IoCs

Processes:

nDpCRftIevGVro2.execmmon32.exe

pid process

2624 nDpCRftIevGVro2.exe
2624 nDpCRftIevGVro2.exe
2624 nDpCRftIevGVro2.exe
2868 cmmon32.exe
2868 cmmon32.exe

Adds Run entry to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

cmmon32.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\XVMPTBZPF = "C:\\Program Files (x86)\\Hczd\\6ljtqdywryl7.exe"	cmmon32.exe
Key created	\Registry\Machine\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run	cmmon32.exe

Modifies Internet Explorer settings 1 TTPs 1 IoCs

adware spyware

Modify Registry

T1112

Processes:

cmmon32.exe

description	ioc	process
Key created	\Registry\User\S-1-5-21-1231583446-2617009595-2137880041-1000\SOFTWARE\Microsoft\Internet Explorer\IntelliForms\Storage2	cmmon32.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 use of WriteProcessMemory 18 IoCs

Processes:

nDpCRftIevGVro2.exeExplorer.EXEcmmon32.exe

description	pid	process	target process
PID 3848 wrote to memory of 2160	3848	nDpCRftIevGVro2.exe	schtasks.exe
PID 3848 wrote to memory of 2160	3848	nDpCRftIevGVro2.exe	schtasks.exe
PID 3848 wrote to memory of 2160	3848	nDpCRftIevGVro2.exe	schtasks.exe
PID 3848 wrote to memory of 2624	3848	nDpCRftIevGVro2.exe	nDpCRftIevGVro2.exe
PID 3848 wrote to memory of 2624	3848	nDpCRftIevGVro2.exe	nDpCRftIevGVro2.exe
PID 3848 wrote to memory of 2624	3848	nDpCRftIevGVro2.exe	nDpCRftIevGVro2.exe
PID 3848 wrote to memory of 2624	3848	nDpCRftIevGVro2.exe	nDpCRftIevGVro2.exe
PID 3848 wrote to memory of 2624	3848	nDpCRftIevGVro2.exe	nDpCRftIevGVro2.exe
PID 3848 wrote to memory of 2624	3848	nDpCRftIevGVro2.exe	nDpCRftIevGVro2.exe
PID 3004 wrote to memory of 2868	3004	Explorer.EXE	cmmon32.exe
PID 3004 wrote to memory of 2868	3004	Explorer.EXE	cmmon32.exe
PID 3004 wrote to memory of 2868	3004	Explorer.EXE	cmmon32.exe
PID 2868 wrote to memory of 3768	2868	cmmon32.exe	cmd.exe
PID 2868 wrote to memory of 3768	2868	cmmon32.exe	cmd.exe
PID 2868 wrote to memory of 3768	2868	cmmon32.exe	cmd.exe
PID 2868 wrote to memory of 3540	2868	cmmon32.exe	cmd.exe
PID 2868 wrote to memory of 3540	2868	cmmon32.exe	cmd.exe
PID 2868 wrote to memory of 3540	2868	cmmon32.exe	cmd.exe

Suspicious use of SetThreadContext 3 IoCs

Processes:

nDpCRftIevGVro2.exenDpCRftIevGVro2.execmmon32.exe

description	pid	process	target process
PID 3848 set thread context of 2624	3848	nDpCRftIevGVro2.exe	nDpCRftIevGVro2.exe
PID 2624 set thread context of 3004	2624	nDpCRftIevGVro2.exe	Explorer.EXE
PID 2868 set thread context of 3004	2868	cmmon32.exe	Explorer.EXE

Suspicious behavior: EnumeratesProcesses 44 IoCs

Processes:

nDpCRftIevGVro2.execmmon32.exe

pid	process
2624	nDpCRftIevGVro2.exe
2624	nDpCRftIevGVro2.exe
2624	nDpCRftIevGVro2.exe
2624	nDpCRftIevGVro2.exe
2868	cmmon32.exe
2868	cmmon32.exe
2868	cmmon32.exe
2868	cmmon32.exe
2868	cmmon32.exe
2868	cmmon32.exe
2868	cmmon32.exe
2868	cmmon32.exe
2868	cmmon32.exe
2868	cmmon32.exe
2868	cmmon32.exe
2868	cmmon32.exe
2868	cmmon32.exe
2868	cmmon32.exe
2868	cmmon32.exe
2868	cmmon32.exe
2868	cmmon32.exe
2868	cmmon32.exe
2868	cmmon32.exe
2868	cmmon32.exe
2868	cmmon32.exe
2868	cmmon32.exe
2868	cmmon32.exe
2868	cmmon32.exe
2868	cmmon32.exe
2868	cmmon32.exe
2868	cmmon32.exe
2868	cmmon32.exe
2868	cmmon32.exe
2868	cmmon32.exe
2868	cmmon32.exe
2868	cmmon32.exe
2868	cmmon32.exe
2868	cmmon32.exe
2868	cmmon32.exe
2868	cmmon32.exe
2868	cmmon32.exe
2868	cmmon32.exe
2868	cmmon32.exe
2868	cmmon32.exe

Suspicious use of AdjustPrivilegeToken 12 IoCs

Processes:

nDpCRftIevGVro2.execmmon32.exeExplorer.EXE

description	pid	process
Token: SeDebugPrivilege	2624	nDpCRftIevGVro2.exe
Token: SeDebugPrivilege	2868	cmmon32.exe
Token: SeShutdownPrivilege	3004	Explorer.EXE
Token: SeCreatePagefilePrivilege	3004	Explorer.EXE
Token: SeShutdownPrivilege	3004	Explorer.EXE
Token: SeCreatePagefilePrivilege	3004	Explorer.EXE
Token: SeShutdownPrivilege	3004	Explorer.EXE
Token: SeCreatePagefilePrivilege	3004	Explorer.EXE
Token: SeShutdownPrivilege	3004	Explorer.EXE
Token: SeCreatePagefilePrivilege	3004	Explorer.EXE
Token: SeShutdownPrivilege	3004	Explorer.EXE
Token: SeCreatePagefilePrivilege	3004	Explorer.EXE

Drops file in Program Files directory 1 IoCs

Processes:

cmmon32.exe

description ioc process

File opened for modification C:\Program Files (x86)\Hczd\6ljtqdywryl7.exe cmmon32.exe
Creates scheduled task(s) 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
persistence

Scheduled Task
T1053

Processes:

schtasks.exe

pid process

2160 schtasks.exe
Formbook
Formbook is a data stealing malware which is capable of stealing data.
trojan spyware stealer formbook

description	ioc	process
File opened for modification	C:\Program Files (x86)\Hczd\6ljtqdywryl7.exe	cmmon32.exe

pid	process
2160	schtasks.exe

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of WriteProcessMemory
- Suspicious use of AdjustPrivilegeToken
PID:3004

C:\Users\Admin\AppData\Local\Temp\nDpCRftIevGVro2.exe
"C:\Users\Admin\AppData\Local\Temp\nDpCRftIevGVro2.exe"
2⤵
- Suspicious use of WriteProcessMemory
- Suspicious use of SetThreadContext
PID:3848

C:\Windows\SysWOW64\schtasks.exe
"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\wjmzDTcOC" /XML "C:\Users\Admin\AppData\Local\Temp\tmp85A1.tmp"
3⤵
- Creates scheduled task(s)
PID:2160

C:\Users\Admin\AppData\Local\Temp\nDpCRftIevGVro2.exe
"{path}"
3⤵
- Suspicious behavior: MapViewOfSection
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:2624

C:\Windows\SysWOW64\cmmon32.exe
"C:\Windows\SysWOW64\cmmon32.exe"
2⤵
- Suspicious behavior: MapViewOfSection
- Adds Run entry to start application
- Modifies Internet Explorer settings
- Suspicious use of WriteProcessMemory
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Drops file in Program Files directory
PID:2868

C:\Windows\SysWOW64\cmd.exe
/c del "C:\Users\Admin\AppData\Local\Temp\nDpCRftIevGVro2.exe"
3⤵
PID:3768

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:3540

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Scheduled Task

1

T1053

Persistence

Registry Run Keys / Startup Folder

1

T1060

Scheduled Task

1

T1053

Privilege Escalation

Scheduled Task

1

T1053

Defense Evasion

Modify Registry

2

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\tmp85A1.tmp

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memory/2160-0-0x0000000000000000-mapping.dmp

Download
memory/2624-2-0x0000000000400000-0x000000000042A000-memory.dmp

Filesize
168KB

Download
memory/2624-3-0x000000000041B6E0-mapping.dmp

Download
memory/2868-5-0x0000000000000000-mapping.dmp

Download
memory/2868-6-0x00000000012E0000-0x00000000012EC000-memory.dmp

Filesize
48KB

Download
memory/2868-7-0x00000000012E0000-0x00000000012EC000-memory.dmp

Filesize
48KB

Download
memory/2868-9-0x00000000054C0000-0x000000000558E000-memory.dmp

Filesize
824KB

Download
memory/3540-10-0x0000000000000000-mapping.dmp

Download
memory/3768-8-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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