formbook | d7083f1007834bbc16f0b6d2ee0e1e2b9e79a04af2a2e21f2d2682c9dff939eb

General

Target

4d712b5dc93ea0ef4c153dfa30aacd25.exe
Size

285KB
MD5

4d712b5dc93ea0ef4c153dfa30aacd25
SHA1

a6a4179eee29bf8e05dd34dda07c27b60a894465
SHA256

d7083f1007834bbc16f0b6d2ee0e1e2b9e79a04af2a2e21f2d2682c9dff939eb
SHA512

3e69b19b9314d84097e5b98802c76e6b9892bd167bcc57699fc5d574f6976bb4820bd38c3613130382fb477aefe55d3ec18d6abb9482af8828f6a5d3b0461144

Score

10^/10

persistence spyware evasion trojan stealer formbook

Malware Config

Signatures

Suspicious use of FindShellTrayWindow 7 IoCs

Processes:

Explorer.EXE

pid process

1280 Explorer.EXE
1280 Explorer.EXE
1280 Explorer.EXE
1280 Explorer.EXE
1280 Explorer.EXE
1280 Explorer.EXE
1280 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

pid	process
1280	Explorer.EXE
1280	Explorer.EXE
1280	Explorer.EXE
1280	Explorer.EXE
1280	Explorer.EXE
1280	Explorer.EXE
1280	Explorer.EXE

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

Suspicious use of WriteProcessMemory 32 IoCs

Processes:

4d712b5dc93ea0ef4c153dfa30aacd25.exeExplorer.EXErundll32.exe4d712b5dc93ea0ef4c153dfa30aacd25.exe

description	pid	process	target process
PID 1316 wrote to memory of 280	1316	4d712b5dc93ea0ef4c153dfa30aacd25.exe	RegAsm.exe
PID 1316 wrote to memory of 280	1316	4d712b5dc93ea0ef4c153dfa30aacd25.exe	RegAsm.exe
PID 1316 wrote to memory of 280	1316	4d712b5dc93ea0ef4c153dfa30aacd25.exe	RegAsm.exe
PID 1316 wrote to memory of 280	1316	4d712b5dc93ea0ef4c153dfa30aacd25.exe	RegAsm.exe
PID 1316 wrote to memory of 280	1316	4d712b5dc93ea0ef4c153dfa30aacd25.exe	RegAsm.exe
PID 1316 wrote to memory of 280	1316	4d712b5dc93ea0ef4c153dfa30aacd25.exe	RegAsm.exe
PID 1316 wrote to memory of 280	1316	4d712b5dc93ea0ef4c153dfa30aacd25.exe	RegAsm.exe
PID 1316 wrote to memory of 280	1316	4d712b5dc93ea0ef4c153dfa30aacd25.exe	RegAsm.exe
PID 1316 wrote to memory of 808	1316	4d712b5dc93ea0ef4c153dfa30aacd25.exe	4d712b5dc93ea0ef4c153dfa30aacd25.exe
PID 1316 wrote to memory of 808	1316	4d712b5dc93ea0ef4c153dfa30aacd25.exe	4d712b5dc93ea0ef4c153dfa30aacd25.exe
PID 1316 wrote to memory of 808	1316	4d712b5dc93ea0ef4c153dfa30aacd25.exe	4d712b5dc93ea0ef4c153dfa30aacd25.exe
PID 1316 wrote to memory of 808	1316	4d712b5dc93ea0ef4c153dfa30aacd25.exe	4d712b5dc93ea0ef4c153dfa30aacd25.exe
PID 1280 wrote to memory of 1080	1280	Explorer.EXE	rundll32.exe
PID 1280 wrote to memory of 1080	1280	Explorer.EXE	rundll32.exe
PID 1280 wrote to memory of 1080	1280	Explorer.EXE	rundll32.exe
PID 1280 wrote to memory of 1080	1280	Explorer.EXE	rundll32.exe
PID 1280 wrote to memory of 1080	1280	Explorer.EXE	rundll32.exe
PID 1280 wrote to memory of 1080	1280	Explorer.EXE	rundll32.exe
PID 1280 wrote to memory of 1080	1280	Explorer.EXE	rundll32.exe
PID 1080 wrote to memory of 1036	1080	rundll32.exe	cmd.exe
PID 1080 wrote to memory of 1036	1080	rundll32.exe	cmd.exe
PID 1080 wrote to memory of 1036	1080	rundll32.exe	cmd.exe
PID 1080 wrote to memory of 1036	1080	rundll32.exe	cmd.exe
PID 808 wrote to memory of 1576	808	4d712b5dc93ea0ef4c153dfa30aacd25.exe	WerFault.exe
PID 808 wrote to memory of 1576	808	4d712b5dc93ea0ef4c153dfa30aacd25.exe	WerFault.exe
PID 808 wrote to memory of 1576	808	4d712b5dc93ea0ef4c153dfa30aacd25.exe	WerFault.exe
PID 808 wrote to memory of 1576	808	4d712b5dc93ea0ef4c153dfa30aacd25.exe	WerFault.exe
PID 1080 wrote to memory of 1232	1080	rundll32.exe	Firefox.exe
PID 1080 wrote to memory of 1232	1080	rundll32.exe	Firefox.exe
PID 1080 wrote to memory of 1232	1080	rundll32.exe	Firefox.exe
PID 1080 wrote to memory of 1232	1080	rundll32.exe	Firefox.exe
PID 1080 wrote to memory of 1232	1080	rundll32.exe	Firefox.exe

Suspicious use of AdjustPrivilegeToken 6 IoCs

Processes:

4d712b5dc93ea0ef4c153dfa30aacd25.exeRegAsm.exerundll32.exeExplorer.EXEWerFault.exe

description	pid	process
Token: SeDebugPrivilege	1316	4d712b5dc93ea0ef4c153dfa30aacd25.exe
Token: SeDebugPrivilege	280	RegAsm.exe
Token: SeDebugPrivilege	1080	rundll32.exe
Token: SeShutdownPrivilege	1280	Explorer.EXE
Token: SeDebugPrivilege	1576	WerFault.exe
Token: SeShutdownPrivilege	1280	Explorer.EXE

Suspicious behavior: EnumeratesProcesses 6050 IoCs

Processes:

4d712b5dc93ea0ef4c153dfa30aacd25.exe

pid	process
1316	4d712b5dc93ea0ef4c153dfa30aacd25.exe
1316	4d712b5dc93ea0ef4c153dfa30aacd25.exe
1316	4d712b5dc93ea0ef4c153dfa30aacd25.exe
1316	4d712b5dc93ea0ef4c153dfa30aacd25.exe
1316	4d712b5dc93ea0ef4c153dfa30aacd25.exe
1316	4d712b5dc93ea0ef4c153dfa30aacd25.exe
1316	4d712b5dc93ea0ef4c153dfa30aacd25.exe
1316	4d712b5dc93ea0ef4c153dfa30aacd25.exe
1316	4d712b5dc93ea0ef4c153dfa30aacd25.exe
1316	4d712b5dc93ea0ef4c153dfa30aacd25.exe
1316	4d712b5dc93ea0ef4c153dfa30aacd25.exe
1316	4d712b5dc93ea0ef4c153dfa30aacd25.exe
1316	4d712b5dc93ea0ef4c153dfa30aacd25.exe
1316	4d712b5dc93ea0ef4c153dfa30aacd25.exe
1316	4d712b5dc93ea0ef4c153dfa30aacd25.exe
1316	4d712b5dc93ea0ef4c153dfa30aacd25.exe
1316	4d712b5dc93ea0ef4c153dfa30aacd25.exe
1316	4d712b5dc93ea0ef4c153dfa30aacd25.exe
1316	4d712b5dc93ea0ef4c153dfa30aacd25.exe
1316	4d712b5dc93ea0ef4c153dfa30aacd25.exe
1316	4d712b5dc93ea0ef4c153dfa30aacd25.exe
1316	4d712b5dc93ea0ef4c153dfa30aacd25.exe
1316	4d712b5dc93ea0ef4c153dfa30aacd25.exe
1316	4d712b5dc93ea0ef4c153dfa30aacd25.exe
1316	4d712b5dc93ea0ef4c153dfa30aacd25.exe
1316	4d712b5dc93ea0ef4c153dfa30aacd25.exe
1316	4d712b5dc93ea0ef4c153dfa30aacd25.exe
1316	4d712b5dc93ea0ef4c153dfa30aacd25.exe
1316	4d712b5dc93ea0ef4c153dfa30aacd25.exe
1316	4d712b5dc93ea0ef4c153dfa30aacd25.exe
1316	4d712b5dc93ea0ef4c153dfa30aacd25.exe
1316	4d712b5dc93ea0ef4c153dfa30aacd25.exe
1316	4d712b5dc93ea0ef4c153dfa30aacd25.exe
1316	4d712b5dc93ea0ef4c153dfa30aacd25.exe
1316	4d712b5dc93ea0ef4c153dfa30aacd25.exe
1316	4d712b5dc93ea0ef4c153dfa30aacd25.exe
1316	4d712b5dc93ea0ef4c153dfa30aacd25.exe
1316	4d712b5dc93ea0ef4c153dfa30aacd25.exe
1316	4d712b5dc93ea0ef4c153dfa30aacd25.exe
1316	4d712b5dc93ea0ef4c153dfa30aacd25.exe
1316	4d712b5dc93ea0ef4c153dfa30aacd25.exe
1316	4d712b5dc93ea0ef4c153dfa30aacd25.exe
1316	4d712b5dc93ea0ef4c153dfa30aacd25.exe
1316	4d712b5dc93ea0ef4c153dfa30aacd25.exe
1316	4d712b5dc93ea0ef4c153dfa30aacd25.exe
1316	4d712b5dc93ea0ef4c153dfa30aacd25.exe
1316	4d712b5dc93ea0ef4c153dfa30aacd25.exe
1316	4d712b5dc93ea0ef4c153dfa30aacd25.exe
1316	4d712b5dc93ea0ef4c153dfa30aacd25.exe
1316	4d712b5dc93ea0ef4c153dfa30aacd25.exe
1316	4d712b5dc93ea0ef4c153dfa30aacd25.exe
1316	4d712b5dc93ea0ef4c153dfa30aacd25.exe
1316	4d712b5dc93ea0ef4c153dfa30aacd25.exe
1316	4d712b5dc93ea0ef4c153dfa30aacd25.exe
1316	4d712b5dc93ea0ef4c153dfa30aacd25.exe
1316	4d712b5dc93ea0ef4c153dfa30aacd25.exe
1316	4d712b5dc93ea0ef4c153dfa30aacd25.exe
1316	4d712b5dc93ea0ef4c153dfa30aacd25.exe
1316	4d712b5dc93ea0ef4c153dfa30aacd25.exe
1316	4d712b5dc93ea0ef4c153dfa30aacd25.exe
1316	4d712b5dc93ea0ef4c153dfa30aacd25.exe
1316	4d712b5dc93ea0ef4c153dfa30aacd25.exe
1316	4d712b5dc93ea0ef4c153dfa30aacd25.exe
1316	4d712b5dc93ea0ef4c153dfa30aacd25.exe

Adds Run entry to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

rundll32.exe

description	ioc	process
Key created	\Registry\Machine\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\1B0LZ = "C:\\Program Files (x86)\\Jaxyl\\updatemlr.exe"	rundll32.exe

Suspicious behavior: MapViewOfSection 8 IoCs

Processes:

4d712b5dc93ea0ef4c153dfa30aacd25.exeRegAsm.exerundll32.exe

pid	process
1316	4d712b5dc93ea0ef4c153dfa30aacd25.exe
280	RegAsm.exe
280	RegAsm.exe
280	RegAsm.exe
1080	rundll32.exe
1080	rundll32.exe
1080	rundll32.exe
1080	rundll32.exe

Suspicious use of SetThreadContext 3 IoCs

Processes:

4d712b5dc93ea0ef4c153dfa30aacd25.exeRegAsm.exerundll32.exe

description	pid	process	target process
PID 1316 set thread context of 280	1316	4d712b5dc93ea0ef4c153dfa30aacd25.exe	RegAsm.exe
PID 280 set thread context of 1280	280	RegAsm.exe	Explorer.EXE
PID 1080 set thread context of 1280	1080	rundll32.exe	Explorer.EXE

Program crash 1 IoCs

Processes:

WerFault.exe

pid pid_target process target process

1576 808 WerFault.exe 4d712b5dc93ea0ef4c153dfa30aacd25.exe
Suspicious use of SendNotifyMessage 4 IoCs

Processes:

Explorer.EXE

pid process

1280 Explorer.EXE
1280 Explorer.EXE
1280 Explorer.EXE
1280 Explorer.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
Drops file in Program Files directory 1 IoCs

Processes:

rundll32.exe

description ioc process

File opened for modification C:\Program Files (x86)\Jaxyl\updatemlr.exe rundll32.exe

pid	pid_target	process	target process
1576	808	WerFault.exe	4d712b5dc93ea0ef4c153dfa30aacd25.exe

pid	process
1280	Explorer.EXE
1280	Explorer.EXE
1280	Explorer.EXE
1280	Explorer.EXE

description	ioc	process
File opened for modification	C:\Program Files (x86)\Jaxyl\updatemlr.exe	rundll32.exe

Modifies Internet Explorer settings 1 TTPs 1 IoCs

adware spyware

Modify Registry

T1112

Processes:

rundll32.exe

description	ioc	process
Key created	\Registry\User\S-1-5-21-1131729243-447456001-3632642222-1000\SOFTWARE\Microsoft\Internet Explorer\IntelliForms\Storage2	rundll32.exe

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

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of FindShellTrayWindow
- Checks whether UAC is enabled
- Suspicious use of WriteProcessMemory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SendNotifyMessage
PID:1280

C:\Users\Admin\AppData\Local\Temp\4d712b5dc93ea0ef4c153dfa30aacd25.exe
"C:\Users\Admin\AppData\Local\Temp\4d712b5dc93ea0ef4c153dfa30aacd25.exe"
2⤵
- Suspicious use of WriteProcessMemory
- Suspicious use of AdjustPrivilegeToken
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of SetThreadContext
PID:1316

C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
"C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
3⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious behavior: MapViewOfSection
- Suspicious use of SetThreadContext
PID:280

C:\Users\Admin\AppData\Local\Temp\4d712b5dc93ea0ef4c153dfa30aacd25.exe
"C:\Users\Admin\AppData\Local\Temp\4d712b5dc93ea0ef4c153dfa30aacd25.exe"
3⤵
- Suspicious use of WriteProcessMemory
PID:808

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 808 -s 7396
4⤵
- Suspicious use of AdjustPrivilegeToken
- Program crash
PID:1576

C:\Windows\SysWOW64\rundll32.exe
"C:\Windows\SysWOW64\rundll32.exe"
2⤵
- Suspicious use of WriteProcessMemory
- Suspicious use of AdjustPrivilegeToken
- Adds Run entry to start application
- Suspicious behavior: MapViewOfSection
- Suspicious use of SetThreadContext
- Drops file in Program Files directory
- Modifies Internet Explorer settings
PID:1080

C:\Windows\SysWOW64\cmd.exe
/c del "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
3⤵
PID:1036

C:\Program Files\Mozilla Firefox\Firefox.exe
"C:\Program Files\Mozilla Firefox\Firefox.exe"
3⤵
PID:1232

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

memory/280-0-0x0000000000400000-0x000000000042D000-memory.dmp

Filesize
180KB

Download
memory/280-1-0x000000000041E2F0-mapping.dmp

Download
memory/808-15-0x0000000000000000-mapping.dmp

Download
memory/808-12-0x0000000000000000-mapping.dmp

Download
memory/808-16-0x0000000000000000-mapping.dmp

Download
memory/808-2-0x0000000000000000-mapping.dmp

Download
memory/808-14-0x0000000000000000-mapping.dmp

Download
memory/808-13-0x0000000000000000-mapping.dmp

Download
memory/808-9-0x0000000000000000-mapping.dmp

Download
memory/808-10-0x0000000000000000-mapping.dmp

Download
memory/808-11-0x0000000000000000-mapping.dmp

Download
memory/1036-5-0x0000000000000000-mapping.dmp

Download
memory/1080-18-0x00000000768A0000-0x00000000768AC000-memory.dmp

Filesize
48KB

Download
memory/1080-6-0x0000000000630000-0x00000000006EB000-memory.dmp

Filesize
748KB

Download
memory/1080-4-0x0000000000620000-0x000000000062E000-memory.dmp

Filesize
56KB

Download
memory/1080-3-0x0000000000000000-mapping.dmp

Download
memory/1080-19-0x00000000756B0000-0x00000000757CD000-memory.dmp

Filesize
1.1MB

Download
memory/1080-20-0x0000000003460000-0x0000000003505000-memory.dmp

Filesize
660KB

Download
memory/1232-21-0x0000000000000000-mapping.dmp

Download
memory/1232-22-0x000000013F840000-0x000000013F8D3000-memory.dmp

Filesize
588KB

Download
memory/1576-8-0x0000000001EE0000-0x0000000001EF1000-memory.dmp

Filesize
68KB

Download
memory/1576-7-0x0000000000000000-mapping.dmp

Download
memory/1576-17-0x0000000002530000-0x0000000002541000-memory.dmp

Filesize
68KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads