formbook | 4410e6f9469bbb3a9174dedf18c52e070ae7b6480b6f8e88c29c43996f2674d6

General

Target

1C22TVH_00002288.exe
Size

376KB
MD5

bcfcaf050beb758a18236ba5fca002a2
SHA1

1fc237942571a5382b926c938dbf15e99310d4a0
SHA256

4410e6f9469bbb3a9174dedf18c52e070ae7b6480b6f8e88c29c43996f2674d6
SHA512

3486b350f59b9d8da098a4fcb48a095fa928aaa4a23a191577feabf232d6613b92e9d82e9971ed448ae37fd4f97c54ded7285bcbe20d6504bd397c0bf0d6cfff

Score

10^/10

formbook xloader tn61 loader persistence rat spyware stealer suricata trojan

Malware Config

Extracted

Family

xloader

Version

2.6

Campaign

tn61

Decoy

ryliehorrall.art

mesdco.net

street-art-ink.com

sepetcin.com

stilghar.com

hawaiipooltiles.com

fuerst-von-falkennest.com

totalvirtue.com

xdk0blc0tqy6a7.life

zootowngravel.com

kreditkarten-optionde.com

6888tlbb.xyz

albertakleekai.com

travelnurseinfofinder3.life

valleyinnswat.com

secure-remove-devices.com

digitalswamy.com

www112casinova.com

medifasttrd.com

distritoxermar.com

Signatures

Formbook
Formbook is a data stealing malware which is capable of stealing data.
trojan spyware stealer formbook
Xloader
Xloader is a rebranded version of Formbook malware.
loader xloader
suricata: ET MALWARE FormBook CnC Checkin (GET)
suricata: ET MALWARE FormBook CnC Checkin (GET)
suricata

Xloader Payload 6 IoCs

rat

Processes:

resource	yara_rule
behavioral1/memory/1708-59-0x000000000041F2C0-mapping.dmp	xloader
behavioral1/memory/1708-58-0x0000000000400000-0x000000000042B000-memory.dmp	xloader
behavioral1/memory/1708-61-0x0000000000400000-0x000000000042B000-memory.dmp	xloader
behavioral1/memory/1708-69-0x0000000000400000-0x000000000042B000-memory.dmp	xloader
behavioral1/memory/1712-72-0x0000000000080000-0x00000000000AB000-memory.dmp	xloader
behavioral1/memory/1712-76-0x0000000000080000-0x00000000000AB000-memory.dmp	xloader

Adds Run key 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\VFIL_RNHERNX = "C:\\Program Files (x86)\\Kl2wtizix\\userafihd43.exe"	cmmon32.exe
Key created	\Registry\Machine\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run	cmmon32.exe

Suspicious use of SetThreadContext 4 IoCs

Processes:

1C22TVH_00002288.execvtres.execmmon32.exe

description	pid	process	target process
PID 388 set thread context of 1708	388	1C22TVH_00002288.exe	cvtres.exe
PID 1708 set thread context of 1272	1708	cvtres.exe	Explorer.EXE
PID 1708 set thread context of 1272	1708	cvtres.exe	Explorer.EXE
PID 1712 set thread context of 1272	1712	cmmon32.exe	Explorer.EXE

Drops file in Program Files directory 1 IoCs

Processes:

cmmon32.exe

description ioc process

File opened for modification C:\Program Files (x86)\Kl2wtizix\userafihd43.exe cmmon32.exe

description	ioc	process
File opened for modification	C:\Program Files (x86)\Kl2wtizix\userafihd43.exe	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-1-5-21-1819626980-2277161760-1023733287-1000\SOFTWARE\Microsoft\Internet Explorer\IntelliForms\Storage2	cmmon32.exe

Suspicious behavior: EnumeratesProcesses 21 IoCs

Processes:

cvtres.execmmon32.exe

pid	process
1708	cvtres.exe
1708	cvtres.exe
1708	cvtres.exe
1712	cmmon32.exe
1712	cmmon32.exe
1712	cmmon32.exe
1712	cmmon32.exe
1712	cmmon32.exe
1712	cmmon32.exe
1712	cmmon32.exe
1712	cmmon32.exe
1712	cmmon32.exe
1712	cmmon32.exe
1712	cmmon32.exe
1712	cmmon32.exe
1712	cmmon32.exe
1712	cmmon32.exe
1712	cmmon32.exe
1712	cmmon32.exe
1712	cmmon32.exe
1712	cmmon32.exe

Suspicious behavior: MapViewOfSection 8 IoCs

Processes:

cvtres.execmmon32.exe

pid process

1708 cvtres.exe
1708 cvtres.exe
1708 cvtres.exe
1708 cvtres.exe
1712 cmmon32.exe
1712 cmmon32.exe
1712 cmmon32.exe
1712 cmmon32.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

cvtres.execmmon32.exe

description pid process

Token: SeDebugPrivilege 1708 cvtres.exe
Token: SeDebugPrivilege 1712 cmmon32.exe
Suspicious use of FindShellTrayWindow 2 IoCs

Processes:

Explorer.EXE

pid process

1272 Explorer.EXE
1272 Explorer.EXE
Suspicious use of SendNotifyMessage 2 IoCs

Processes:

Explorer.EXE

pid process

1272 Explorer.EXE
1272 Explorer.EXE

description	pid	process
Token: SeDebugPrivilege	1708	cvtres.exe
Token: SeDebugPrivilege	1712	cmmon32.exe

pid	process
1272	Explorer.EXE
1272	Explorer.EXE

pid	process
1272	Explorer.EXE
1272	Explorer.EXE

Suspicious use of WriteProcessMemory 20 IoCs

Processes:

1C22TVH_00002288.exeExplorer.EXEcmmon32.exe

description	pid	process	target process
PID 388 wrote to memory of 1708	388	1C22TVH_00002288.exe	cvtres.exe
PID 388 wrote to memory of 1708	388	1C22TVH_00002288.exe	cvtres.exe
PID 388 wrote to memory of 1708	388	1C22TVH_00002288.exe	cvtres.exe
PID 388 wrote to memory of 1708	388	1C22TVH_00002288.exe	cvtres.exe
PID 388 wrote to memory of 1708	388	1C22TVH_00002288.exe	cvtres.exe
PID 388 wrote to memory of 1708	388	1C22TVH_00002288.exe	cvtres.exe
PID 388 wrote to memory of 1708	388	1C22TVH_00002288.exe	cvtres.exe
PID 1272 wrote to memory of 1712	1272	Explorer.EXE	cmmon32.exe
PID 1272 wrote to memory of 1712	1272	Explorer.EXE	cmmon32.exe
PID 1272 wrote to memory of 1712	1272	Explorer.EXE	cmmon32.exe
PID 1272 wrote to memory of 1712	1272	Explorer.EXE	cmmon32.exe
PID 1712 wrote to memory of 944	1712	cmmon32.exe	cmd.exe
PID 1712 wrote to memory of 944	1712	cmmon32.exe	cmd.exe
PID 1712 wrote to memory of 944	1712	cmmon32.exe	cmd.exe
PID 1712 wrote to memory of 944	1712	cmmon32.exe	cmd.exe
PID 1712 wrote to memory of 1088	1712	cmmon32.exe	Firefox.exe
PID 1712 wrote to memory of 1088	1712	cmmon32.exe	Firefox.exe
PID 1712 wrote to memory of 1088	1712	cmmon32.exe	Firefox.exe
PID 1712 wrote to memory of 1088	1712	cmmon32.exe	Firefox.exe
PID 1712 wrote to memory of 1088	1712	cmmon32.exe	Firefox.exe

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of WriteProcessMemory
PID:1272

C:\Users\Admin\AppData\Local\Temp\1C22TVH_00002288.exe
"C:\Users\Admin\AppData\Local\Temp\1C22TVH_00002288.exe"
2⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:388

C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe
"C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe"
3⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
PID:1708

C:\Windows\SysWOW64\cmmon32.exe
"C:\Windows\SysWOW64\cmmon32.exe"
2⤵
- Adds Run key to start application
- Suspicious use of SetThreadContext
- Drops file in Program Files directory
- Modifies Internet Explorer settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1712

C:\Windows\SysWOW64\cmd.exe
/c del "C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe"
3⤵
PID:944

C:\Program Files\Mozilla Firefox\Firefox.exe
"C:\Program Files\Mozilla Firefox\Firefox.exe"
3⤵
PID:1088

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

Discovery

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

memory/388-54-0x00000000001C0000-0x0000000000220000-memory.dmp

Filesize
384KB

Download
memory/944-70-0x0000000000000000-mapping.dmp

Download
memory/1272-64-0x0000000006520000-0x00000000065D2000-memory.dmp

Filesize
712KB

Download
memory/1272-77-0x0000000007150000-0x00000000072C7000-memory.dmp

Filesize
1.5MB

Download
memory/1272-75-0x0000000007150000-0x00000000072C7000-memory.dmp

Filesize
1.5MB

Download
memory/1272-67-0x0000000006A10000-0x0000000006B19000-memory.dmp

Filesize
1.0MB

Download
memory/1708-61-0x0000000000400000-0x000000000042B000-memory.dmp

Filesize
172KB

Download
memory/1708-59-0x000000000041F2C0-mapping.dmp

Download
memory/1708-62-0x0000000000BB0000-0x0000000000EB3000-memory.dmp

Filesize
3.0MB

Download
memory/1708-66-0x00000000002D0000-0x00000000002E1000-memory.dmp

Filesize
68KB

Download
memory/1708-58-0x0000000000400000-0x000000000042B000-memory.dmp

Filesize
172KB

Download
memory/1708-56-0x0000000000400000-0x000000000042B000-memory.dmp

Filesize
172KB

Download
memory/1708-69-0x0000000000400000-0x000000000042B000-memory.dmp

Filesize
172KB

Download
memory/1708-63-0x0000000000180000-0x0000000000191000-memory.dmp

Filesize
68KB

Download
memory/1708-55-0x0000000000400000-0x000000000042B000-memory.dmp

Filesize
172KB

Download
memory/1712-73-0x0000000000BE0000-0x0000000000EE3000-memory.dmp

Filesize
3.0MB

Download
memory/1712-72-0x0000000000080000-0x00000000000AB000-memory.dmp

Filesize
172KB

Download
memory/1712-74-0x00000000005E0000-0x0000000000670000-memory.dmp

Filesize
576KB

Download
memory/1712-71-0x0000000000EF0000-0x0000000000EFD000-memory.dmp

Filesize
52KB

Download
memory/1712-76-0x0000000000080000-0x00000000000AB000-memory.dmp

Filesize
172KB

Download
memory/1712-68-0x0000000000000000-mapping.dmp

Download
memory/1712-78-0x0000000076C81000-0x0000000076C83000-memory.dmp

Filesize
8KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads