formbook | 9bbebb59b74b06b6d1db59d4d33f0baa4a6d44ec18b51b4ec11b9ae210e8bff8

General

Target

purchase order.exe
Size

409KB
MD5

de3e924dfe469d9d7efe3c69ece5af68
SHA1

e1c8598e8308b0effd73af08bc5531f398a0a213
SHA256

9bbebb59b74b06b6d1db59d4d33f0baa4a6d44ec18b51b4ec11b9ae210e8bff8
SHA512

9505ccac7302531accb7eb9010528abe2566f05f016857660d34ce43b90722e401c8134dafc89fc09167f6e14d41318b9e2f857f2153e4b3cde7f8b583345ce0

Score

10^/10

rat trojan spyware stealer formbook evasion persistence

Malware Config

Signatures

Suspicious behavior: EnumeratesProcesses 23 IoCs

Processes:

purchase order.exepurchase order.execontrol.exe

pid	process
1496	purchase order.exe
1496	purchase order.exe
1044	purchase order.exe
1044	purchase order.exe
1520	control.exe
1520	control.exe
1520	control.exe
1520	control.exe
1520	control.exe
1520	control.exe
1520	control.exe
1520	control.exe
1520	control.exe
1520	control.exe
1520	control.exe
1520	control.exe
1520	control.exe
1520	control.exe
1520	control.exe
1520	control.exe
1520	control.exe
1520	control.exe
1520	control.exe

Suspicious use of WriteProcessMemory 20 IoCs

Processes:

purchase order.exeExplorer.EXEcontrol.exe

description	pid	process	target process
PID 1496 wrote to memory of 1044	1496	purchase order.exe	purchase order.exe
PID 1496 wrote to memory of 1044	1496	purchase order.exe	purchase order.exe
PID 1496 wrote to memory of 1044	1496	purchase order.exe	purchase order.exe
PID 1496 wrote to memory of 1044	1496	purchase order.exe	purchase order.exe
PID 1496 wrote to memory of 1044	1496	purchase order.exe	purchase order.exe
PID 1496 wrote to memory of 1044	1496	purchase order.exe	purchase order.exe
PID 1496 wrote to memory of 1044	1496	purchase order.exe	purchase order.exe
PID 1228 wrote to memory of 1520	1228	Explorer.EXE	control.exe
PID 1228 wrote to memory of 1520	1228	Explorer.EXE	control.exe
PID 1228 wrote to memory of 1520	1228	Explorer.EXE	control.exe
PID 1228 wrote to memory of 1520	1228	Explorer.EXE	control.exe
PID 1520 wrote to memory of 1676	1520	control.exe	cmd.exe
PID 1520 wrote to memory of 1676	1520	control.exe	cmd.exe
PID 1520 wrote to memory of 1676	1520	control.exe	cmd.exe
PID 1520 wrote to memory of 1676	1520	control.exe	cmd.exe
PID 1520 wrote to memory of 1988	1520	control.exe	Firefox.exe
PID 1520 wrote to memory of 1988	1520	control.exe	Firefox.exe
PID 1520 wrote to memory of 1988	1520	control.exe	Firefox.exe
PID 1520 wrote to memory of 1988	1520	control.exe	Firefox.exe
PID 1520 wrote to memory of 1988	1520	control.exe	Firefox.exe

Deletes itself 1 IoCs

Processes:

cmd.exe

pid process

1676 cmd.exe
Formbook
Formbook is a data stealing malware which is capable of stealing data.
trojan spyware stealer formbook

pid	process
1676	cmd.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

purchase order.exepurchase order.execontrol.exe

description	pid	process
Token: SeDebugPrivilege	1496	purchase order.exe
Token: SeDebugPrivilege	1044	purchase order.exe
Token: SeDebugPrivilege	1520	control.exe

Suspicious behavior: MapViewOfSection 7 IoCs

Processes:

purchase order.execontrol.exe

pid process

1044 purchase order.exe
1044 purchase order.exe
1044 purchase order.exe
1520 control.exe
1520 control.exe
1520 control.exe
1520 control.exe
Suspicious use of SendNotifyMessage 4 IoCs

Processes:

Explorer.EXE

pid process

1228 Explorer.EXE
1228 Explorer.EXE
1228 Explorer.EXE
1228 Explorer.EXE

pid	process
1044	purchase order.exe
1044	purchase order.exe
1044	purchase order.exe
1520	control.exe
1520	control.exe
1520	control.exe
1520	control.exe

pid	process
1228	Explorer.EXE
1228	Explorer.EXE
1228	Explorer.EXE
1228	Explorer.EXE

Adds policy Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

control.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run\RFYLE = "C:\\Program Files (x86)\\Kkv1lx\\config1bg8nno.exe"	control.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run	control.exe

Suspicious use of SetThreadContext 3 IoCs

Processes:

purchase order.exepurchase order.execontrol.exe

description	pid	process	target process
PID 1496 set thread context of 1044	1496	purchase order.exe	purchase order.exe
PID 1044 set thread context of 1228	1044	purchase order.exe	Explorer.EXE
PID 1520 set thread context of 1228	1520	control.exe	Explorer.EXE

Formbook Payload 4 IoCs

rat

Processes:

resource	yara_rule
behavioral1/memory/1044-3-0x0000000000400000-0x000000000042D000-memory.dmp	formbook
behavioral1/memory/1044-3-0x0000000000400000-0x000000000042D000-memory.dmp	formbook
behavioral1/memory/1044-4-0x000000000041E310-mapping.dmp	formbook
behavioral1/memory/1520-5-0x0000000000000000-mapping.dmp	formbook

Drops file in Program Files directory 1 IoCs

Processes:

control.exe

description ioc process

File opened for modification C:\Program Files (x86)\Kkv1lx\config1bg8nno.exe control.exe
System policy modification 1 TTPs 1 IoCs
evasion

Modify Registry
T1112

Processes:

control.exe

description ioc process

Key created \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer control.exe
Suspicious use of FindShellTrayWindow 5 IoCs

Processes:

Explorer.EXE

pid process

1228 Explorer.EXE
1228 Explorer.EXE
1228 Explorer.EXE
1228 Explorer.EXE
1228 Explorer.EXE
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

description	ioc	process
File opened for modification	C:\Program Files (x86)\Kkv1lx\config1bg8nno.exe	control.exe

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

pid	process
1228	Explorer.EXE
1228	Explorer.EXE
1228	Explorer.EXE
1228	Explorer.EXE
1228	Explorer.EXE

description	ioc	process
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	Explorer.EXE

Modifies Internet Explorer settings 1 TTPs 1 IoCs

adware spyware

Modify Registry

T1112

Processes:

control.exe

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

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of WriteProcessMemory
- Suspicious use of SendNotifyMessage
- Suspicious use of FindShellTrayWindow
- Checks whether UAC is enabled
PID:1228

C:\Users\Admin\AppData\Local\Temp\purchase order.exe
"C:\Users\Admin\AppData\Local\Temp\purchase order.exe"
2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetThreadContext
PID:1496

C:\Users\Admin\AppData\Local\Temp\purchase order.exe
"{path}"
3⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious behavior: MapViewOfSection
- Suspicious use of SetThreadContext
PID:1044

C:\Windows\SysWOW64\control.exe
"C:\Windows\SysWOW64\control.exe"
2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
- Suspicious use of AdjustPrivilegeToken
- Suspicious behavior: MapViewOfSection
- Adds policy Run key to start application
- Suspicious use of SetThreadContext
- Drops file in Program Files directory
- System policy modification
- Modifies Internet Explorer settings
PID:1520

C:\Windows\SysWOW64\cmd.exe
/c del "C:\Users\Admin\AppData\Local\Temp\purchase order.exe"
3⤵
- Deletes itself
PID:1676

C:\Program Files\Mozilla Firefox\Firefox.exe
"C:\Program Files\Mozilla Firefox\Firefox.exe"
3⤵
PID:1988

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

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\N11103Q7\N11logim.jpeg

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C:\Users\Admin\AppData\Roaming\N11103Q7\N11logrf.ini

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C:\Users\Admin\AppData\Roaming\N11103Q7\N11logri.ini

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C:\Users\Admin\AppData\Roaming\N11103Q7\N11logrv.ini

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memory/1044-3-0x0000000000400000-0x000000000042D000-memory.dmp

Filesize
180KB

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memory/1044-4-0x000000000041E310-mapping.dmp

Download
memory/1496-1-0x0000000000000000-0x0000000000000000-disk.dmp

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memory/1520-6-0x0000000000FC0000-0x0000000000FDF000-memory.dmp

Filesize
124KB

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memory/1520-10-0x0000000076EC0000-0x0000000076FDD000-memory.dmp

Filesize
1.1MB

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memory/1520-11-0x00000000038F0000-0x0000000003A46000-memory.dmp

Filesize
1.3MB

Download
memory/1520-9-0x0000000076880000-0x000000007688C000-memory.dmp

Filesize
48KB

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memory/1520-8-0x0000000000980000-0x0000000000A6C000-memory.dmp

Filesize
944KB

Download
memory/1520-5-0x0000000000000000-mapping.dmp

Download
memory/1676-7-0x0000000000000000-mapping.dmp

Download
memory/1988-12-0x0000000000000000-mapping.dmp

Download
memory/1988-13-0x000000013FD20000-0x000000013FDB3000-memory.dmp

Filesize
588KB

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads