54d67f153de6ba73daf1b037057cf5c0550cfb6c0aee53c5d5119a9a3647b300

General

Target

citadel_1.2.4.0.vir.exe
Size

630KB
MD5

f5b434f9ad53bac3bd1af814bbe73fc5
SHA1

12a5100c1217b847c2177c3dc47efc233b188a2f
SHA256

54d67f153de6ba73daf1b037057cf5c0550cfb6c0aee53c5d5119a9a3647b300
SHA512

ac64540501f8555cce3e2eb3f85b8c23ddf57d413d5b3d7c14274d46e2499c7667c14cfadeb36f803f05dadf1b33fd2049d5a29bb90fd12f9a6eaed988f91442

Score

8^/10

persistence

Malware Config

Signatures

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

fuwy.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-910373003-3952921535-3480519689-1000\Software\Microsoft\Windows\CurrentVersion\Run\{A63DE2C1-8E64-250B-8BE9-1048FBA6C158} = "C:\\Users\\Admin\\AppData\\Roaming\\Izavex\\fuwy.exe"	fuwy.exe
Key created	\REGISTRY\USER\S-1-5-21-910373003-3952921535-3480519689-1000\Software\Microsoft\Windows\Currentversion\Run	fuwy.exe

Suspicious use of UnmapMainImage 2 IoCs

Processes:

citadel_1.2.4.0.vir.exefuwy.exe

pid process

1400 citadel_1.2.4.0.vir.exe
1420 fuwy.exe

pid	process
1400	citadel_1.2.4.0.vir.exe
1420	fuwy.exe

Suspicious use of WriteProcessMemory 53 IoCs

Processes:

citadel_1.2.4.0.vir.exefuwy.exe

description	pid	process	target process
PID 1400 wrote to memory of 1420	1400	citadel_1.2.4.0.vir.exe	fuwy.exe
PID 1400 wrote to memory of 1420	1400	citadel_1.2.4.0.vir.exe	fuwy.exe
PID 1400 wrote to memory of 1420	1400	citadel_1.2.4.0.vir.exe	fuwy.exe
PID 1400 wrote to memory of 1420	1400	citadel_1.2.4.0.vir.exe	fuwy.exe
PID 1420 wrote to memory of 1132	1420	fuwy.exe	taskhost.exe
PID 1420 wrote to memory of 1132	1420	fuwy.exe	taskhost.exe
PID 1420 wrote to memory of 1132	1420	fuwy.exe	taskhost.exe
PID 1420 wrote to memory of 1132	1420	fuwy.exe	taskhost.exe
PID 1420 wrote to memory of 1132	1420	fuwy.exe	taskhost.exe
PID 1420 wrote to memory of 1220	1420	fuwy.exe	Dwm.exe
PID 1420 wrote to memory of 1220	1420	fuwy.exe	Dwm.exe
PID 1420 wrote to memory of 1220	1420	fuwy.exe	Dwm.exe
PID 1420 wrote to memory of 1220	1420	fuwy.exe	Dwm.exe
PID 1420 wrote to memory of 1220	1420	fuwy.exe	Dwm.exe
PID 1420 wrote to memory of 1284	1420	fuwy.exe	Explorer.EXE
PID 1420 wrote to memory of 1284	1420	fuwy.exe	Explorer.EXE
PID 1420 wrote to memory of 1284	1420	fuwy.exe	Explorer.EXE
PID 1420 wrote to memory of 1284	1420	fuwy.exe	Explorer.EXE
PID 1420 wrote to memory of 1284	1420	fuwy.exe	Explorer.EXE
PID 1420 wrote to memory of 1400	1420	fuwy.exe	citadel_1.2.4.0.vir.exe
PID 1420 wrote to memory of 1400	1420	fuwy.exe	citadel_1.2.4.0.vir.exe
PID 1420 wrote to memory of 1400	1420	fuwy.exe	citadel_1.2.4.0.vir.exe
PID 1420 wrote to memory of 1400	1420	fuwy.exe	citadel_1.2.4.0.vir.exe
PID 1420 wrote to memory of 1400	1420	fuwy.exe	citadel_1.2.4.0.vir.exe
PID 1420 wrote to memory of 1588	1420	fuwy.exe	WinMail.exe
PID 1420 wrote to memory of 1588	1420	fuwy.exe	WinMail.exe
PID 1420 wrote to memory of 1588	1420	fuwy.exe	WinMail.exe
PID 1420 wrote to memory of 1588	1420	fuwy.exe	WinMail.exe
PID 1420 wrote to memory of 1588	1420	fuwy.exe	WinMail.exe
PID 1400 wrote to memory of 368	1400	citadel_1.2.4.0.vir.exe	cmd.exe
PID 1400 wrote to memory of 368	1400	citadel_1.2.4.0.vir.exe	cmd.exe
PID 1400 wrote to memory of 368	1400	citadel_1.2.4.0.vir.exe	cmd.exe
PID 1400 wrote to memory of 368	1400	citadel_1.2.4.0.vir.exe	cmd.exe
PID 1400 wrote to memory of 368	1400	citadel_1.2.4.0.vir.exe	cmd.exe
PID 1400 wrote to memory of 368	1400	citadel_1.2.4.0.vir.exe	cmd.exe
PID 1400 wrote to memory of 368	1400	citadel_1.2.4.0.vir.exe	cmd.exe
PID 1400 wrote to memory of 368	1400	citadel_1.2.4.0.vir.exe	cmd.exe
PID 1400 wrote to memory of 368	1400	citadel_1.2.4.0.vir.exe	cmd.exe
PID 1420 wrote to memory of 1292	1420	fuwy.exe	DllHost.exe
PID 1420 wrote to memory of 1292	1420	fuwy.exe	DllHost.exe
PID 1420 wrote to memory of 1292	1420	fuwy.exe	DllHost.exe
PID 1420 wrote to memory of 1292	1420	fuwy.exe	DllHost.exe
PID 1420 wrote to memory of 1292	1420	fuwy.exe	DllHost.exe
PID 1420 wrote to memory of 1872	1420	fuwy.exe	DllHost.exe
PID 1420 wrote to memory of 1872	1420	fuwy.exe	DllHost.exe
PID 1420 wrote to memory of 1872	1420	fuwy.exe	DllHost.exe
PID 1420 wrote to memory of 1872	1420	fuwy.exe	DllHost.exe
PID 1420 wrote to memory of 1872	1420	fuwy.exe	DllHost.exe
PID 1420 wrote to memory of 1464	1420	fuwy.exe	DllHost.exe
PID 1420 wrote to memory of 1464	1420	fuwy.exe	DllHost.exe
PID 1420 wrote to memory of 1464	1420	fuwy.exe	DllHost.exe
PID 1420 wrote to memory of 1464	1420	fuwy.exe	DllHost.exe
PID 1420 wrote to memory of 1464	1420	fuwy.exe	DllHost.exe

Suspicious behavior: EnumeratesProcesses 32 IoCs

Processes:

fuwy.exe

pid	process
1420	fuwy.exe
1420	fuwy.exe
1420	fuwy.exe
1420	fuwy.exe
1420	fuwy.exe
1420	fuwy.exe
1420	fuwy.exe
1420	fuwy.exe
1420	fuwy.exe
1420	fuwy.exe
1420	fuwy.exe
1420	fuwy.exe
1420	fuwy.exe
1420	fuwy.exe
1420	fuwy.exe
1420	fuwy.exe
1420	fuwy.exe
1420	fuwy.exe
1420	fuwy.exe
1420	fuwy.exe
1420	fuwy.exe
1420	fuwy.exe
1420	fuwy.exe
1420	fuwy.exe
1420	fuwy.exe
1420	fuwy.exe
1420	fuwy.exe
1420	fuwy.exe
1420	fuwy.exe
1420	fuwy.exe
1420	fuwy.exe
1420	fuwy.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

citadel_1.2.4.0.vir.exe

description pid process target process

PID 1400 set thread context of 368 1400 citadel_1.2.4.0.vir.exe cmd.exe

description	pid	process	target process
PID 1400 set thread context of 368	1400	citadel_1.2.4.0.vir.exe	cmd.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\30DD2588-00000001.eml:OECustomProperty	WinMail.exe

Modifies Internet Explorer settings 1 TTPs 2 IoCs

adware spyware

Modify Registry

T1112

Processes:

citadel_1.2.4.0.vir.exe

description	ioc	process
Key created	\REGISTRY\USER\S-1-5-21-910373003-3952921535-3480519689-1000\Software\Microsoft\Internet Explorer\Privacy	citadel_1.2.4.0.vir.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-910373003-3952921535-3480519689-1000\Software\Microsoft\Internet Explorer\Privacy\CleanCookies = "0"	citadel_1.2.4.0.vir.exe

Suspicious use of AdjustPrivilegeToken 5 IoCs

Processes:

citadel_1.2.4.0.vir.exeWinMail.execmd.exe

description	pid	process
Token: SeSecurityPrivilege	1400	citadel_1.2.4.0.vir.exe
Token: SeSecurityPrivilege	1400	citadel_1.2.4.0.vir.exe
Token: SeSecurityPrivilege	1400	citadel_1.2.4.0.vir.exe
Token: SeManageVolumePrivilege	1588	WinMail.exe
Token: SeSecurityPrivilege	368	cmd.exe

Loads dropped DLL 2 IoCs

Processes:

citadel_1.2.4.0.vir.exe

pid process

1400 citadel_1.2.4.0.vir.exe
1400 citadel_1.2.4.0.vir.exe
Executes dropped EXE 1 IoCs

Processes:

fuwy.exe

pid process

1420 fuwy.exe
Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

WinMail.exe

pid process

1588 WinMail.exe
Deletes itself 1 IoCs

Processes:

cmd.exe

pid process

368 cmd.exe

pid	process
1400	citadel_1.2.4.0.vir.exe
1400	citadel_1.2.4.0.vir.exe

pid	process
1588	WinMail.exe

pid	process
368	cmd.exe

C:\Windows\system32\taskhost.exe
"taskhost.exe"
1⤵
PID:1132

C:\Windows\system32\Dwm.exe
"C:\Windows\system32\Dwm.exe"
1⤵
PID:1220

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
PID:1284

C:\Users\Admin\AppData\Local\Temp\citadel_1.2.4.0.vir.exe
"C:\Users\Admin\AppData\Local\Temp\citadel_1.2.4.0.vir.exe"
2⤵
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
- Suspicious use of SetThreadContext
- Modifies Internet Explorer settings
- Suspicious use of AdjustPrivilegeToken
- Loads dropped DLL
PID:1400

C:\Users\Admin\AppData\Roaming\Izavex\fuwy.exe
"C:\Users\Admin\AppData\Roaming\Izavex\fuwy.exe"
3⤵
- Adds Run key to start application
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
- Suspicious behavior: EnumeratesProcesses
- Executes dropped EXE
PID:1420

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\system32\cmd.exe" /c "C:\Users\Admin\AppData\Local\Temp\tmp509ffe44.bat"
3⤵
- Suspicious use of AdjustPrivilegeToken
- Deletes itself
PID:368

C:\Program Files\Windows Mail\WinMail.exe
"C:\Program Files\Windows Mail\WinMail.exe" -Embedding
1⤵
- NTFS ADS
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
PID:1588

C:\Windows\system32\DllHost.exe
C:\Windows\system32\DllHost.exe /Processid:{3EB3C877-1F16-487C-9050-104DBCD66683}
1⤵
PID:1292

C:\Windows\system32\DllHost.exe
C:\Windows\system32\DllHost.exe /Processid:{F9717507-6651-4EDB-BFF7-AE615179BCCF}
1⤵
PID:1872

C:\Windows\system32\DllHost.exe
C:\Windows\system32\DllHost.exe /Processid:{F9717507-6651-4EDB-BFF7-AE615179BCCF}
1⤵
PID:1464

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

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmp509ffe44.bat

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C:\Users\Admin\AppData\Roaming\Izavex\fuwy.exe

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C:\Users\Admin\AppData\Roaming\Izavex\fuwy.exe

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C:\Users\Admin\AppData\Roaming\Usede\yrfyt.ber

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\Users\Admin\AppData\Roaming\Izavex\fuwy.exe

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\Users\Admin\AppData\Roaming\Izavex\fuwy.exe

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memory/368-28-0x00000000000CFF53-mapping.dmp

Download
memory/368-26-0x0000000000050000-0x00000000000E7000-memory.dmp

Filesize
604KB

Download
memory/1420-2-0x0000000000000000-mapping.dmp

Download
memory/1588-17-0x0000000003AF0000-0x0000000003AF2000-memory.dmp

Filesize
8KB

Download
memory/1588-21-0x0000000003E20000-0x0000000003E22000-memory.dmp

Filesize
8KB

Download
memory/1588-16-0x0000000003AE0000-0x0000000003AE2000-memory.dmp

Filesize
8KB

Download
memory/1588-11-0x00000000039D0000-0x0000000003AD0000-memory.dmp

Filesize
1024KB

Download
memory/1588-18-0x0000000003F00000-0x0000000003F02000-memory.dmp

Filesize
8KB

Download
memory/1588-19-0x0000000003E40000-0x0000000003E42000-memory.dmp

Filesize
8KB

Download
memory/1588-20-0x0000000003AE0000-0x0000000003AE2000-memory.dmp

Filesize
8KB

Download
memory/1588-15-0x0000000003AD0000-0x0000000003AD2000-memory.dmp

Filesize
8KB

Download
memory/1588-22-0x0000000003D70000-0x0000000003D72000-memory.dmp

Filesize
8KB

Download
memory/1588-23-0x0000000003AE0000-0x0000000003AE2000-memory.dmp

Filesize
8KB

Download
memory/1588-24-0x0000000003E40000-0x0000000003E42000-memory.dmp

Filesize
8KB

Download
memory/1588-25-0x0000000003AE0000-0x0000000003AE2000-memory.dmp

Filesize
8KB

Download
memory/1588-10-0x00000000038D0000-0x0000000003AD0000-memory.dmp

Filesize
2.0MB

Download
memory/1588-9-0x00000000038D0000-0x00000000039D0000-memory.dmp

Filesize
1024KB

Download
memory/1588-7-0x00000000038D0000-0x0000000003AD0000-memory.dmp

Filesize
2.0MB

Download
memory/1588-5-0x00000000038D0000-0x00000000039D0000-memory.dmp

Filesize
1024KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads