989d34e7e12df031098bc9898451e765b2a79c9af7416ea9906f81e95755cc20

General

Target

citadel_1.2.0.0.vir.exe
Size

234KB
MD5

b2325969f4c2db6350b279b5f255e0c8
SHA1

dad6a70eee64ce5d8cc2f7ebc6bb444a6337fc3f
SHA256

989d34e7e12df031098bc9898451e765b2a79c9af7416ea9906f81e95755cc20
SHA512

fb41254d588d474dfb20746684b3ef911863cf812d0752ae5d3228b6b8ee391bacf5a948d8d58c9efd2da6ad6e978b0807b18717d9a9cc2f2e6b861cb20e3304

Score

8^/10

persistence

Malware Config

Signatures

Suspicious use of AdjustPrivilegeToken 5 IoCs

Processes:

citadel_1.2.0.0.vir.exeWinMail.execmd.exe

description	pid	process
Token: SeSecurityPrivilege	1528	citadel_1.2.0.0.vir.exe
Token: SeSecurityPrivilege	1528	citadel_1.2.0.0.vir.exe
Token: SeSecurityPrivilege	1528	citadel_1.2.0.0.vir.exe
Token: SeManageVolumePrivilege	1060	WinMail.exe
Token: SeSecurityPrivilege	760	cmd.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

citadel_1.2.0.0.vir.exe

description pid process target process

PID 1528 set thread context of 760 1528 citadel_1.2.0.0.vir.exe cmd.exe
Deletes itself 1 IoCs

Processes:

cmd.exe

pid process

760 cmd.exe

description	pid	process	target process
PID 1528 set thread context of 760	1528	citadel_1.2.0.0.vir.exe	cmd.exe

pid	process
760	cmd.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

isve.exe

description	ioc	process
Key created	\REGISTRY\USER\S-1-5-21-910373003-3952921535-3480519689-1000\Software\Microsoft\Windows\Currentversion\Run	isve.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-910373003-3952921535-3480519689-1000\Software\Microsoft\Windows\CurrentVersion\Run\{482FE526-507D-68B9-2FB1-A702D7980250} = "C:\\Users\\Admin\\AppData\\Roaming\\Ewekka\\isve.exe"	isve.exe

Loads dropped DLL 2 IoCs

Processes:

citadel_1.2.0.0.vir.exe

pid process

1528 citadel_1.2.0.0.vir.exe
1528 citadel_1.2.0.0.vir.exe

pid	process
1528	citadel_1.2.0.0.vir.exe
1528	citadel_1.2.0.0.vir.exe

Suspicious use of WriteProcessMemory 53 IoCs

Processes:

citadel_1.2.0.0.vir.exeisve.exe

description	pid	process	target process
PID 1528 wrote to memory of 852	1528	citadel_1.2.0.0.vir.exe	isve.exe
PID 1528 wrote to memory of 852	1528	citadel_1.2.0.0.vir.exe	isve.exe
PID 1528 wrote to memory of 852	1528	citadel_1.2.0.0.vir.exe	isve.exe
PID 1528 wrote to memory of 852	1528	citadel_1.2.0.0.vir.exe	isve.exe
PID 852 wrote to memory of 1168	852	isve.exe	taskhost.exe
PID 852 wrote to memory of 1168	852	isve.exe	taskhost.exe
PID 852 wrote to memory of 1168	852	isve.exe	taskhost.exe
PID 852 wrote to memory of 1168	852	isve.exe	taskhost.exe
PID 852 wrote to memory of 1168	852	isve.exe	taskhost.exe
PID 852 wrote to memory of 1252	852	isve.exe	Dwm.exe
PID 852 wrote to memory of 1252	852	isve.exe	Dwm.exe
PID 852 wrote to memory of 1252	852	isve.exe	Dwm.exe
PID 852 wrote to memory of 1252	852	isve.exe	Dwm.exe
PID 852 wrote to memory of 1252	852	isve.exe	Dwm.exe
PID 852 wrote to memory of 1316	852	isve.exe	Explorer.EXE
PID 852 wrote to memory of 1316	852	isve.exe	Explorer.EXE
PID 852 wrote to memory of 1316	852	isve.exe	Explorer.EXE
PID 852 wrote to memory of 1316	852	isve.exe	Explorer.EXE
PID 852 wrote to memory of 1316	852	isve.exe	Explorer.EXE
PID 852 wrote to memory of 1528	852	isve.exe	citadel_1.2.0.0.vir.exe
PID 852 wrote to memory of 1528	852	isve.exe	citadel_1.2.0.0.vir.exe
PID 852 wrote to memory of 1528	852	isve.exe	citadel_1.2.0.0.vir.exe
PID 852 wrote to memory of 1528	852	isve.exe	citadel_1.2.0.0.vir.exe
PID 852 wrote to memory of 1528	852	isve.exe	citadel_1.2.0.0.vir.exe
PID 852 wrote to memory of 1060	852	isve.exe	WinMail.exe
PID 852 wrote to memory of 1060	852	isve.exe	WinMail.exe
PID 852 wrote to memory of 1060	852	isve.exe	WinMail.exe
PID 852 wrote to memory of 1060	852	isve.exe	WinMail.exe
PID 852 wrote to memory of 1060	852	isve.exe	WinMail.exe
PID 1528 wrote to memory of 760	1528	citadel_1.2.0.0.vir.exe	cmd.exe
PID 1528 wrote to memory of 760	1528	citadel_1.2.0.0.vir.exe	cmd.exe
PID 1528 wrote to memory of 760	1528	citadel_1.2.0.0.vir.exe	cmd.exe
PID 1528 wrote to memory of 760	1528	citadel_1.2.0.0.vir.exe	cmd.exe
PID 1528 wrote to memory of 760	1528	citadel_1.2.0.0.vir.exe	cmd.exe
PID 1528 wrote to memory of 760	1528	citadel_1.2.0.0.vir.exe	cmd.exe
PID 1528 wrote to memory of 760	1528	citadel_1.2.0.0.vir.exe	cmd.exe
PID 1528 wrote to memory of 760	1528	citadel_1.2.0.0.vir.exe	cmd.exe
PID 1528 wrote to memory of 760	1528	citadel_1.2.0.0.vir.exe	cmd.exe
PID 852 wrote to memory of 1576	852	isve.exe	DllHost.exe
PID 852 wrote to memory of 1576	852	isve.exe	DllHost.exe
PID 852 wrote to memory of 1576	852	isve.exe	DllHost.exe
PID 852 wrote to memory of 1576	852	isve.exe	DllHost.exe
PID 852 wrote to memory of 1576	852	isve.exe	DllHost.exe
PID 852 wrote to memory of 1976	852	isve.exe	DllHost.exe
PID 852 wrote to memory of 1976	852	isve.exe	DllHost.exe
PID 852 wrote to memory of 1976	852	isve.exe	DllHost.exe
PID 852 wrote to memory of 1976	852	isve.exe	DllHost.exe
PID 852 wrote to memory of 1976	852	isve.exe	DllHost.exe
PID 852 wrote to memory of 1260	852	isve.exe	DllHost.exe
PID 852 wrote to memory of 1260	852	isve.exe	DllHost.exe
PID 852 wrote to memory of 1260	852	isve.exe	DllHost.exe
PID 852 wrote to memory of 1260	852	isve.exe	DllHost.exe
PID 852 wrote to memory of 1260	852	isve.exe	DllHost.exe

Executes dropped EXE 1 IoCs

Processes:

isve.exe

pid process

852 isve.exe

Suspicious behavior: EnumeratesProcesses 32 IoCs

Processes:

isve.exe

pid	process
852	isve.exe
852	isve.exe
852	isve.exe
852	isve.exe
852	isve.exe
852	isve.exe
852	isve.exe
852	isve.exe
852	isve.exe
852	isve.exe
852	isve.exe
852	isve.exe
852	isve.exe
852	isve.exe
852	isve.exe
852	isve.exe
852	isve.exe
852	isve.exe
852	isve.exe
852	isve.exe
852	isve.exe
852	isve.exe
852	isve.exe
852	isve.exe
852	isve.exe
852	isve.exe
852	isve.exe
852	isve.exe
852	isve.exe
852	isve.exe
852	isve.exe
852	isve.exe

Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

WinMail.exe

pid process

1060 WinMail.exe

pid	process
1060	WinMail.exe

Modifies Internet Explorer settings 1 TTPs 2 IoCs

adware spyware

Modify Registry

T1112

Processes:

citadel_1.2.0.0.vir.exe

description	ioc	process
Key created	\REGISTRY\USER\S-1-5-21-910373003-3952921535-3480519689-1000\Software\Microsoft\Internet Explorer\Privacy	citadel_1.2.0.0.vir.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-910373003-3952921535-3480519689-1000\Software\Microsoft\Internet Explorer\Privacy\CleanCookies = "0"	citadel_1.2.0.0.vir.exe

NTFS ADS 1 IoCs

Processes:

WinMail.exe

description	ioc	process
File opened for modification	C:\Users\Admin\AppData\Local\Microsoft\Windows Mail\Local Folders\Inbox\06193513-00000001.eml:OECustomProperty	WinMail.exe

C:\Windows\system32\taskhost.exe
"taskhost.exe"
1⤵
PID:1168

C:\Windows\system32\Dwm.exe
"C:\Windows\system32\Dwm.exe"
1⤵
PID:1252

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
PID:1316

C:\Users\Admin\AppData\Local\Temp\citadel_1.2.0.0.vir.exe
"C:\Users\Admin\AppData\Local\Temp\citadel_1.2.0.0.vir.exe"
2⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetThreadContext
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
- Modifies Internet Explorer settings
PID:1528

C:\Users\Admin\AppData\Roaming\Ewekka\isve.exe
"C:\Users\Admin\AppData\Roaming\Ewekka\isve.exe"
3⤵
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
- Executes dropped EXE
- Suspicious behavior: EnumeratesProcesses
PID:852

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\system32\cmd.exe" /c "C:\Users\Admin\AppData\Local\Temp\tmp5a22cb48.bat"
3⤵
- Suspicious use of AdjustPrivilegeToken
- Deletes itself
PID:760

C:\Program Files\Windows Mail\WinMail.exe
"C:\Program Files\Windows Mail\WinMail.exe" -Embedding
1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- NTFS ADS
PID:1060

C:\Windows\system32\DllHost.exe
C:\Windows\system32\DllHost.exe /Processid:{3EB3C877-1F16-487C-9050-104DBCD66683}
1⤵
PID:1576

C:\Windows\system32\DllHost.exe
C:\Windows\system32\DllHost.exe /Processid:{F9717507-6651-4EDB-BFF7-AE615179BCCF}
1⤵
PID:1976

C:\Windows\system32\DllHost.exe
C:\Windows\system32\DllHost.exe /Processid:{F9717507-6651-4EDB-BFF7-AE615179BCCF}
1⤵
PID:1260

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

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Temp\tmp5a22cb48.bat

Download Submit
C:\Users\Admin\AppData\Roaming\Ewekka\isve.exe

Download Submit
C:\Users\Admin\AppData\Roaming\Ewekka\isve.exe

Download Submit
C:\Users\Admin\AppData\Roaming\Oswaw\liwao.qes

Download Submit
\Users\Admin\AppData\Roaming\Ewekka\isve.exe

Download Submit
\Users\Admin\AppData\Roaming\Ewekka\isve.exe

Download Submit
memory/760-27-0x000000000005FD20-mapping.dmp

Download
memory/760-25-0x0000000000050000-0x0000000000080000-memory.dmp

Filesize
192KB

Download
memory/852-2-0x0000000000000000-mapping.dmp

Download
memory/1060-17-0x0000000002660000-0x0000000002662000-memory.dmp

Filesize
8KB

Download
memory/1060-21-0x0000000002650000-0x0000000002652000-memory.dmp

Filesize
8KB

Download
memory/1060-16-0x0000000002670000-0x0000000002672000-memory.dmp

Filesize
8KB

Download
memory/1060-11-0x0000000003A50000-0x0000000003B50000-memory.dmp

Filesize
1024KB

Download
memory/1060-18-0x0000000003D40000-0x0000000003D42000-memory.dmp

Filesize
8KB

Download
memory/1060-19-0x0000000002650000-0x0000000002652000-memory.dmp

Filesize
8KB

Download
memory/1060-20-0x0000000003C50000-0x0000000003C52000-memory.dmp

Filesize
8KB

Download
memory/1060-15-0x0000000002650000-0x0000000002652000-memory.dmp

Filesize
8KB

Download
memory/1060-22-0x0000000002650000-0x0000000002652000-memory.dmp

Filesize
8KB

Download
memory/1060-23-0x0000000003C60000-0x0000000003C62000-memory.dmp

Filesize
8KB

Download
memory/1060-24-0x0000000003C70000-0x0000000003C72000-memory.dmp

Filesize
8KB

Download
memory/1060-10-0x0000000003950000-0x0000000003B50000-memory.dmp

Filesize
2.0MB

Download
memory/1060-9-0x0000000003950000-0x0000000003A50000-memory.dmp

Filesize
1024KB

Download
memory/1060-7-0x0000000003950000-0x0000000003B50000-memory.dmp

Filesize
2.0MB

Download
memory/1060-5-0x0000000003950000-0x0000000003A50000-memory.dmp

Filesize
1024KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

Replay Monitor

Loading Replay Monitor...

Downloads