4a6a8f6c1322b7422ba3d72fc223860d0be9073cde27bcfe5365f8135f1ae441

General

Target

citadel_1.1.4.0.vir.exe
Size

11.1MB
MD5

485b3bf3e7b06079c98646596be7850f
SHA1

2e1796209101fc11708433f69df91631519a55f8
SHA256

4a6a8f6c1322b7422ba3d72fc223860d0be9073cde27bcfe5365f8135f1ae441
SHA512

183b25e5da8bf3f21ff3fb0953545f7fa31e83bd13d7d1f309f6ebc94c14de9f0f965ff1c112550f5e2ab0565f3bd2fc930dce4b1a5c12a1985a55ebd87120f0

Score

8^/10

persistence

Malware Config

Signatures

Executes dropped EXE 1 IoCs

Processes:

ipikc.exe

pid process

1604 ipikc.exe

Suspicious behavior: EnumeratesProcesses 30 IoCs

Processes:

ipikc.exe

pid	process
1604	ipikc.exe
1604	ipikc.exe
1604	ipikc.exe
1604	ipikc.exe
1604	ipikc.exe
1604	ipikc.exe
1604	ipikc.exe
1604	ipikc.exe
1604	ipikc.exe
1604	ipikc.exe
1604	ipikc.exe
1604	ipikc.exe
1604	ipikc.exe
1604	ipikc.exe
1604	ipikc.exe
1604	ipikc.exe
1604	ipikc.exe
1604	ipikc.exe
1604	ipikc.exe
1604	ipikc.exe
1604	ipikc.exe
1604	ipikc.exe
1604	ipikc.exe
1604	ipikc.exe
1604	ipikc.exe
1604	ipikc.exe
1604	ipikc.exe
1604	ipikc.exe
1604	ipikc.exe
1604	ipikc.exe

Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

WinMail.exe

pid process

1044 WinMail.exe
Suspicious use of FindShellTrayWindow 1 IoCs

Processes:

WinMail.exe

pid process

1044 WinMail.exe
Suspicious use of SendNotifyMessage 1 IoCs

Processes:

WinMail.exe

pid process

1044 WinMail.exe
Suspicious use of SetThreadContext 1 IoCs

Processes:

citadel_1.1.4.0.vir.exe

description pid process target process

PID 1448 set thread context of 1944 1448 citadel_1.1.4.0.vir.exe cmd.exe
Loads dropped DLL 2 IoCs

Processes:

citadel_1.1.4.0.vir.exe

pid process

1448 citadel_1.1.4.0.vir.exe
1448 citadel_1.1.4.0.vir.exe

pid	process
1044	WinMail.exe

pid	process
1044	WinMail.exe

pid	process
1044	WinMail.exe

description	pid	process	target process
PID 1448 set thread context of 1944	1448	citadel_1.1.4.0.vir.exe	cmd.exe

pid	process
1448	citadel_1.1.4.0.vir.exe
1448	citadel_1.1.4.0.vir.exe

Suspicious use of WriteProcessMemory 43 IoCs

Processes:

citadel_1.1.4.0.vir.exeipikc.exe

description	pid	process	target process
PID 1448 wrote to memory of 1604	1448	citadel_1.1.4.0.vir.exe	ipikc.exe
PID 1448 wrote to memory of 1604	1448	citadel_1.1.4.0.vir.exe	ipikc.exe
PID 1448 wrote to memory of 1604	1448	citadel_1.1.4.0.vir.exe	ipikc.exe
PID 1448 wrote to memory of 1604	1448	citadel_1.1.4.0.vir.exe	ipikc.exe
PID 1604 wrote to memory of 1200	1604	ipikc.exe	taskhost.exe
PID 1604 wrote to memory of 1200	1604	ipikc.exe	taskhost.exe
PID 1604 wrote to memory of 1200	1604	ipikc.exe	taskhost.exe
PID 1604 wrote to memory of 1200	1604	ipikc.exe	taskhost.exe
PID 1604 wrote to memory of 1200	1604	ipikc.exe	taskhost.exe
PID 1604 wrote to memory of 1280	1604	ipikc.exe	Dwm.exe
PID 1604 wrote to memory of 1280	1604	ipikc.exe	Dwm.exe
PID 1604 wrote to memory of 1280	1604	ipikc.exe	Dwm.exe
PID 1604 wrote to memory of 1280	1604	ipikc.exe	Dwm.exe
PID 1604 wrote to memory of 1280	1604	ipikc.exe	Dwm.exe
PID 1604 wrote to memory of 1312	1604	ipikc.exe	Explorer.EXE
PID 1604 wrote to memory of 1312	1604	ipikc.exe	Explorer.EXE
PID 1604 wrote to memory of 1312	1604	ipikc.exe	Explorer.EXE
PID 1604 wrote to memory of 1312	1604	ipikc.exe	Explorer.EXE
PID 1604 wrote to memory of 1312	1604	ipikc.exe	Explorer.EXE
PID 1604 wrote to memory of 1448	1604	ipikc.exe	citadel_1.1.4.0.vir.exe
PID 1604 wrote to memory of 1448	1604	ipikc.exe	citadel_1.1.4.0.vir.exe
PID 1604 wrote to memory of 1448	1604	ipikc.exe	citadel_1.1.4.0.vir.exe
PID 1604 wrote to memory of 1448	1604	ipikc.exe	citadel_1.1.4.0.vir.exe
PID 1604 wrote to memory of 1448	1604	ipikc.exe	citadel_1.1.4.0.vir.exe
PID 1448 wrote to memory of 1944	1448	citadel_1.1.4.0.vir.exe	cmd.exe
PID 1448 wrote to memory of 1944	1448	citadel_1.1.4.0.vir.exe	cmd.exe
PID 1448 wrote to memory of 1944	1448	citadel_1.1.4.0.vir.exe	cmd.exe
PID 1448 wrote to memory of 1944	1448	citadel_1.1.4.0.vir.exe	cmd.exe
PID 1448 wrote to memory of 1944	1448	citadel_1.1.4.0.vir.exe	cmd.exe
PID 1448 wrote to memory of 1944	1448	citadel_1.1.4.0.vir.exe	cmd.exe
PID 1448 wrote to memory of 1944	1448	citadel_1.1.4.0.vir.exe	cmd.exe
PID 1448 wrote to memory of 1944	1448	citadel_1.1.4.0.vir.exe	cmd.exe
PID 1448 wrote to memory of 1944	1448	citadel_1.1.4.0.vir.exe	cmd.exe
PID 1604 wrote to memory of 2008	1604	ipikc.exe	DllHost.exe
PID 1604 wrote to memory of 2008	1604	ipikc.exe	DllHost.exe
PID 1604 wrote to memory of 2008	1604	ipikc.exe	DllHost.exe
PID 1604 wrote to memory of 2008	1604	ipikc.exe	DllHost.exe
PID 1604 wrote to memory of 2008	1604	ipikc.exe	DllHost.exe
PID 1604 wrote to memory of 1424	1604	ipikc.exe	DllHost.exe
PID 1604 wrote to memory of 1424	1604	ipikc.exe	DllHost.exe
PID 1604 wrote to memory of 1424	1604	ipikc.exe	DllHost.exe
PID 1604 wrote to memory of 1424	1604	ipikc.exe	DllHost.exe
PID 1604 wrote to memory of 1424	1604	ipikc.exe	DllHost.exe

Modifies Internet Explorer settings 1 TTPs 2 IoCs

adware spyware

Modify Registry

T1112

Processes:

citadel_1.1.4.0.vir.exe

description	ioc	process
Key created	\REGISTRY\USER\S-1-5-21-1131729243-447456001-3632642222-1000\Software\Microsoft\Internet Explorer\Privacy	citadel_1.1.4.0.vir.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-1131729243-447456001-3632642222-1000\Software\Microsoft\Internet Explorer\Privacy\CleanCookies = "0"	citadel_1.1.4.0.vir.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

ipikc.exe

description	ioc	process
Key created	\REGISTRY\USER\S-1-5-21-1131729243-447456001-3632642222-1000\Software\Microsoft\Windows\Currentversion\Run	ipikc.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1131729243-447456001-3632642222-1000\Software\Microsoft\Windows\CurrentVersion\Run\{011321CC-496D-3A0E-3B20-04CD5AD7C2A7} = "C:\\Users\\Admin\\AppData\\Roaming\\Ynysky\\ipikc.exe"	ipikc.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\03A57B27-00000001.eml:OECustomProperty	WinMail.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

Processes:

citadel_1.1.4.0.vir.exeWinMail.exe

description	pid	process
Token: SeSecurityPrivilege	1448	citadel_1.1.4.0.vir.exe
Token: SeSecurityPrivilege	1448	citadel_1.1.4.0.vir.exe
Token: SeSecurityPrivilege	1448	citadel_1.1.4.0.vir.exe
Token: SeManageVolumePrivilege	1044	WinMail.exe

Deletes itself 1 IoCs

Processes:

cmd.exe

pid process

1944 cmd.exe

pid	process
1944	cmd.exe

C:\Windows\system32\taskhost.exe
"taskhost.exe"
1⤵
PID:1200

C:\Windows\system32\Dwm.exe
"C:\Windows\system32\Dwm.exe"
1⤵
PID:1280

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
PID:1312

C:\Users\Admin\AppData\Local\Temp\citadel_1.1.4.0.vir.exe
"C:\Users\Admin\AppData\Local\Temp\citadel_1.1.4.0.vir.exe"
2⤵
- Suspicious use of SetThreadContext
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
- Modifies Internet Explorer settings
- Suspicious use of AdjustPrivilegeToken
PID:1448

C:\Users\Admin\AppData\Roaming\Ynysky\ipikc.exe
"C:\Users\Admin\AppData\Roaming\Ynysky\ipikc.exe"
3⤵
- Executes dropped EXE
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
- Adds Run key to start application
PID:1604

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\system32\cmd.exe" /c "C:\Users\Admin\AppData\Local\Temp\tmp740d2aff.bat"
3⤵
- Deletes itself
PID:1944

C:\Program Files\Windows Mail\WinMail.exe
"C:\Program Files\Windows Mail\WinMail.exe" -Embedding
1⤵
- Suspicious use of SetWindowsHookEx
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- NTFS ADS
- Suspicious use of AdjustPrivilegeToken
PID:1044

C:\Windows\system32\DllHost.exe
C:\Windows\system32\DllHost.exe /Processid:{3EB3C877-1F16-487C-9050-104DBCD66683}
1⤵
PID:2008

C:\Windows\system32\DllHost.exe
C:\Windows\system32\DllHost.exe /Processid:{F9717507-6651-4EDB-BFF7-AE615179BCCF}
1⤵
PID:1424

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

C:\Users\Admin\AppData\Local\Temp\tmp740d2aff.bat

Download Submit
C:\Users\Admin\AppData\Roaming\Ikxub\yfyda.eza

Download Submit
C:\Users\Admin\AppData\Roaming\Ynysky\ipikc.exe

Download Submit
C:\Users\Admin\AppData\Roaming\Ynysky\ipikc.exe

Download Submit
\Users\Admin\AppData\Roaming\Ynysky\ipikc.exe

Download Submit
\Users\Admin\AppData\Roaming\Ynysky\ipikc.exe

Download Submit
memory/1044-5-0x0000000003960000-0x0000000003A60000-memory.dmp

Filesize
1024KB

Download
memory/1044-7-0x0000000003960000-0x0000000003B60000-memory.dmp

Filesize
2.0MB

Download
memory/1044-9-0x0000000003960000-0x0000000003A60000-memory.dmp

Filesize
1024KB

Download
memory/1044-10-0x0000000003960000-0x0000000003B60000-memory.dmp

Filesize
2.0MB

Download
memory/1044-11-0x0000000003A60000-0x0000000003B60000-memory.dmp

Filesize
1024KB

Download
memory/1044-15-0x0000000003650000-0x0000000003652000-memory.dmp

Filesize
8KB

Download
memory/1044-16-0x0000000003670000-0x0000000003672000-memory.dmp

Filesize
8KB

Download
memory/1044-17-0x0000000003660000-0x0000000003662000-memory.dmp

Filesize
8KB

Download
memory/1044-18-0x0000000003CD0000-0x0000000003CD2000-memory.dmp

Filesize
8KB

Download
memory/1044-19-0x0000000003F00000-0x0000000003F02000-memory.dmp

Filesize
8KB

Download
memory/1044-20-0x0000000003650000-0x0000000003652000-memory.dmp

Filesize
8KB

Download
memory/1044-21-0x0000000003CF0000-0x0000000003CF2000-memory.dmp

Filesize
8KB

Download
memory/1044-22-0x0000000003EE0000-0x0000000003EE2000-memory.dmp

Filesize
8KB

Download
memory/1044-23-0x0000000003D20000-0x0000000003D22000-memory.dmp

Filesize
8KB

Download
memory/1044-24-0x0000000003EF0000-0x0000000003EF2000-memory.dmp

Filesize
8KB

Download
memory/1044-25-0x0000000003D00000-0x0000000003D02000-memory.dmp

Filesize
8KB

Download
memory/1044-26-0x0000000003CF0000-0x0000000003CF2000-memory.dmp

Filesize
8KB

Download
memory/1044-27-0x0000000003F10000-0x0000000003F12000-memory.dmp

Filesize
8KB

Download
memory/1044-28-0x0000000003CC0000-0x0000000003CC2000-memory.dmp

Filesize
8KB

Download
memory/1044-29-0x00000000042D0000-0x00000000042D2000-memory.dmp

Filesize
8KB

Download
memory/1044-30-0x00000000042E0000-0x00000000042E2000-memory.dmp

Filesize
8KB

Download
memory/1044-31-0x00000000042F0000-0x00000000042F2000-memory.dmp

Filesize
8KB

Download
memory/1044-32-0x0000000004310000-0x0000000004312000-memory.dmp

Filesize
8KB

Download
memory/1044-33-0x00000000043F0000-0x00000000043F2000-memory.dmp

Filesize
8KB

Download
memory/1044-34-0x0000000004550000-0x0000000004552000-memory.dmp

Filesize
8KB

Download
memory/1044-35-0x0000000004560000-0x0000000004562000-memory.dmp

Filesize
8KB

Download
memory/1044-36-0x00000000045F0000-0x00000000045F2000-memory.dmp

Filesize
8KB

Download
memory/1044-37-0x0000000004600000-0x0000000004602000-memory.dmp

Filesize
8KB

Download
memory/1044-38-0x00000000048F0000-0x00000000048F2000-memory.dmp

Filesize
8KB

Download
memory/1044-39-0x0000000004900000-0x0000000004902000-memory.dmp

Filesize
8KB

Download
memory/1044-40-0x0000000004910000-0x0000000004912000-memory.dmp

Filesize
8KB

Download
memory/1044-41-0x0000000004920000-0x0000000004922000-memory.dmp

Filesize
8KB

Download
memory/1044-42-0x0000000003B60000-0x0000000003B62000-memory.dmp

Filesize
8KB

Download
memory/1044-43-0x0000000003CB0000-0x0000000003CB2000-memory.dmp

Filesize
8KB

Download
memory/1044-44-0x00000000042A0000-0x00000000042A2000-memory.dmp

Filesize
8KB

Download
memory/1044-45-0x0000000004000000-0x0000000004002000-memory.dmp

Filesize
8KB

Download
memory/1044-46-0x0000000004010000-0x0000000004012000-memory.dmp

Filesize
8KB

Download
memory/1044-47-0x0000000004020000-0x0000000004022000-memory.dmp

Filesize
8KB

Download
memory/1044-48-0x0000000004030000-0x0000000004032000-memory.dmp

Filesize
8KB

Download
memory/1044-49-0x0000000004040000-0x0000000004042000-memory.dmp

Filesize
8KB

Download
memory/1044-50-0x0000000003960000-0x0000000003A60000-memory.dmp

Filesize
1024KB

Download
memory/1044-52-0x00000000023E0000-0x00000000023F0000-memory.dmp

Filesize
64KB

Download
memory/1044-58-0x0000000002380000-0x0000000002390000-memory.dmp

Filesize
64KB

Download
memory/1604-2-0x0000000000000000-mapping.dmp

Download
memory/1944-65-0x0000000000050000-0x000000000007F000-memory.dmp

Filesize
188KB

Download
memory/1944-66-0x0000000000061847-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads