d29b6d3a43795f840214bdc2e46255566c9840e8aa16cce8704b8eaf34cfba83

General

Target

citadel_1.3.3.5.vir.exe
Size

213KB
MD5

ebcc956a463733ff3b8b7f3e10c7bf4a
SHA1

8a4757afbef49a27272961dca870d69780b2abee
SHA256

d29b6d3a43795f840214bdc2e46255566c9840e8aa16cce8704b8eaf34cfba83
SHA512

a33f89d697ea77042a7c4dd0340ddda5e57ec8a28d8c955e410c8161ae76237ce477ae4c064c71a2e4a55f957d81fb828345053a4a5bd7ac16ed36902b816d33

Score

8^/10

discovery persistence

Malware Config

Signatures

Suspicious behavior: EnumeratesProcesses 31 IoCs

Processes:

abaxu.exe

pid	process
1696	abaxu.exe
1696	abaxu.exe
1696	abaxu.exe
1696	abaxu.exe
1696	abaxu.exe
1696	abaxu.exe
1696	abaxu.exe
1696	abaxu.exe
1696	abaxu.exe
1696	abaxu.exe
1696	abaxu.exe
1696	abaxu.exe
1696	abaxu.exe
1696	abaxu.exe
1696	abaxu.exe
1696	abaxu.exe
1696	abaxu.exe
1696	abaxu.exe
1696	abaxu.exe
1696	abaxu.exe
1696	abaxu.exe
1696	abaxu.exe
1696	abaxu.exe
1696	abaxu.exe
1696	abaxu.exe
1696	abaxu.exe
1696	abaxu.exe
1696	abaxu.exe
1696	abaxu.exe
1696	abaxu.exe
1696	abaxu.exe

Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
discovery

Query Registry
T1012

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\1E7A20A4-00000001.eml:OECustomProperty	WinMail.exe

Deletes itself 1 IoCs

Processes:

cmd.exe

pid process

1504 cmd.exe

pid	process
1504	cmd.exe

Modifies Internet Explorer settings 1 TTPs 2 IoCs

adware spyware

Modify Registry

T1112

Processes:

citadel_1.3.3.5.vir.exe

description	ioc	process
Key created	\REGISTRY\USER\S-1-5-21-1131729243-447456001-3632642222-1000\Software\Microsoft\Internet Explorer\Privacy	citadel_1.3.3.5.vir.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-1131729243-447456001-3632642222-1000\Software\Microsoft\Internet Explorer\Privacy\CleanCookies = "0"	citadel_1.3.3.5.vir.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

citadel_1.3.3.5.vir.exe

description pid process target process

PID 1492 set thread context of 1504 1492 citadel_1.3.3.5.vir.exe cmd.exe

description	pid	process	target process
PID 1492 set thread context of 1504	1492	citadel_1.3.3.5.vir.exe	cmd.exe

Suspicious use of AdjustPrivilegeToken 9 IoCs

Processes:

citadel_1.3.3.5.vir.exeWinMail.exe

description	pid	process
Token: SeSecurityPrivilege	1492	citadel_1.3.3.5.vir.exe
Token: SeSecurityPrivilege	1492	citadel_1.3.3.5.vir.exe
Token: SeSecurityPrivilege	1492	citadel_1.3.3.5.vir.exe
Token: SeSecurityPrivilege	1492	citadel_1.3.3.5.vir.exe
Token: SeSecurityPrivilege	1492	citadel_1.3.3.5.vir.exe
Token: SeSecurityPrivilege	1492	citadel_1.3.3.5.vir.exe
Token: SeSecurityPrivilege	1492	citadel_1.3.3.5.vir.exe
Token: SeSecurityPrivilege	1492	citadel_1.3.3.5.vir.exe
Token: SeManageVolumePrivilege	1864	WinMail.exe

Loads dropped DLL 2 IoCs

Processes:

citadel_1.3.3.5.vir.exe

pid process

1492 citadel_1.3.3.5.vir.exe
1492 citadel_1.3.3.5.vir.exe
Executes dropped EXE 1 IoCs

Processes:

abaxu.exe

pid process

1696 abaxu.exe
Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

WinMail.exe

pid process

1864 WinMail.exe
Suspicious use of SendNotifyMessage 1 IoCs

Processes:

WinMail.exe

pid process

1864 WinMail.exe

pid	process
1492	citadel_1.3.3.5.vir.exe
1492	citadel_1.3.3.5.vir.exe

pid	process
1864	WinMail.exe

pid	process
1864	WinMail.exe

Suspicious use of WriteProcessMemory 48 IoCs

Processes:

citadel_1.3.3.5.vir.exeabaxu.exe

description	pid	process	target process
PID 1492 wrote to memory of 1696	1492	citadel_1.3.3.5.vir.exe	abaxu.exe
PID 1492 wrote to memory of 1696	1492	citadel_1.3.3.5.vir.exe	abaxu.exe
PID 1492 wrote to memory of 1696	1492	citadel_1.3.3.5.vir.exe	abaxu.exe
PID 1492 wrote to memory of 1696	1492	citadel_1.3.3.5.vir.exe	abaxu.exe
PID 1696 wrote to memory of 1084	1696	abaxu.exe	taskhost.exe
PID 1696 wrote to memory of 1084	1696	abaxu.exe	taskhost.exe
PID 1696 wrote to memory of 1084	1696	abaxu.exe	taskhost.exe
PID 1696 wrote to memory of 1084	1696	abaxu.exe	taskhost.exe
PID 1696 wrote to memory of 1084	1696	abaxu.exe	taskhost.exe
PID 1696 wrote to memory of 1156	1696	abaxu.exe	Dwm.exe
PID 1696 wrote to memory of 1156	1696	abaxu.exe	Dwm.exe
PID 1696 wrote to memory of 1156	1696	abaxu.exe	Dwm.exe
PID 1696 wrote to memory of 1156	1696	abaxu.exe	Dwm.exe
PID 1696 wrote to memory of 1156	1696	abaxu.exe	Dwm.exe
PID 1696 wrote to memory of 1212	1696	abaxu.exe	Explorer.EXE
PID 1696 wrote to memory of 1212	1696	abaxu.exe	Explorer.EXE
PID 1696 wrote to memory of 1212	1696	abaxu.exe	Explorer.EXE
PID 1696 wrote to memory of 1212	1696	abaxu.exe	Explorer.EXE
PID 1696 wrote to memory of 1212	1696	abaxu.exe	Explorer.EXE
PID 1696 wrote to memory of 1492	1696	abaxu.exe	citadel_1.3.3.5.vir.exe
PID 1696 wrote to memory of 1492	1696	abaxu.exe	citadel_1.3.3.5.vir.exe
PID 1696 wrote to memory of 1492	1696	abaxu.exe	citadel_1.3.3.5.vir.exe
PID 1696 wrote to memory of 1492	1696	abaxu.exe	citadel_1.3.3.5.vir.exe
PID 1696 wrote to memory of 1492	1696	abaxu.exe	citadel_1.3.3.5.vir.exe
PID 1696 wrote to memory of 1864	1696	abaxu.exe	WinMail.exe
PID 1696 wrote to memory of 1864	1696	abaxu.exe	WinMail.exe
PID 1696 wrote to memory of 1864	1696	abaxu.exe	WinMail.exe
PID 1696 wrote to memory of 1864	1696	abaxu.exe	WinMail.exe
PID 1696 wrote to memory of 1864	1696	abaxu.exe	WinMail.exe
PID 1492 wrote to memory of 1504	1492	citadel_1.3.3.5.vir.exe	cmd.exe
PID 1492 wrote to memory of 1504	1492	citadel_1.3.3.5.vir.exe	cmd.exe
PID 1492 wrote to memory of 1504	1492	citadel_1.3.3.5.vir.exe	cmd.exe
PID 1492 wrote to memory of 1504	1492	citadel_1.3.3.5.vir.exe	cmd.exe
PID 1492 wrote to memory of 1504	1492	citadel_1.3.3.5.vir.exe	cmd.exe
PID 1492 wrote to memory of 1504	1492	citadel_1.3.3.5.vir.exe	cmd.exe
PID 1492 wrote to memory of 1504	1492	citadel_1.3.3.5.vir.exe	cmd.exe
PID 1492 wrote to memory of 1504	1492	citadel_1.3.3.5.vir.exe	cmd.exe
PID 1492 wrote to memory of 1504	1492	citadel_1.3.3.5.vir.exe	cmd.exe
PID 1696 wrote to memory of 1044	1696	abaxu.exe	DllHost.exe
PID 1696 wrote to memory of 1044	1696	abaxu.exe	DllHost.exe
PID 1696 wrote to memory of 1044	1696	abaxu.exe	DllHost.exe
PID 1696 wrote to memory of 1044	1696	abaxu.exe	DllHost.exe
PID 1696 wrote to memory of 1044	1696	abaxu.exe	DllHost.exe
PID 1696 wrote to memory of 1548	1696	abaxu.exe	DllHost.exe
PID 1696 wrote to memory of 1548	1696	abaxu.exe	DllHost.exe
PID 1696 wrote to memory of 1548	1696	abaxu.exe	DllHost.exe
PID 1696 wrote to memory of 1548	1696	abaxu.exe	DllHost.exe
PID 1696 wrote to memory of 1548	1696	abaxu.exe	DllHost.exe

Suspicious use of FindShellTrayWindow 1 IoCs

Processes:

WinMail.exe

pid process

1864 WinMail.exe

pid	process
1864	WinMail.exe

Adds Run key to start application 2 TTPs 3 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

abaxu.exe

description	ioc	process
Key created	\REGISTRY\USER\S-1-5-21-1131729243-447456001-3632642222-1000\Software\Microsoft\Windows\Currentversion\Run	abaxu.exe
Key created	\REGISTRY\MACHINE\Software\Wow6432Node\Microsoft\Windows\Currentversion\Run	abaxu.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1131729243-447456001-3632642222-1000\Software\Microsoft\Windows\CurrentVersion\Run\Ynemak = "C:\\Users\\Admin\\AppData\\Roaming\\Emmaos\\abaxu.exe"	abaxu.exe

C:\Windows\system32\taskhost.exe
"taskhost.exe"
1⤵
PID:1084

C:\Windows\system32\Dwm.exe
"C:\Windows\system32\Dwm.exe"
1⤵
PID:1156

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
PID:1212

C:\Users\Admin\AppData\Local\Temp\citadel_1.3.3.5.vir.exe
"C:\Users\Admin\AppData\Local\Temp\citadel_1.3.3.5.vir.exe"
2⤵
- Modifies Internet Explorer settings
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1492

C:\Users\Admin\AppData\Roaming\Emmaos\abaxu.exe
"C:\Users\Admin\AppData\Roaming\Emmaos\abaxu.exe"
3⤵
- Suspicious behavior: EnumeratesProcesses
- Executes dropped EXE
- Suspicious use of WriteProcessMemory
- Adds Run key to start application
PID:1696

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\system32\cmd.exe" /c "C:\Users\Admin\AppData\Local\Temp\tmp08f4a25d.bat"
3⤵
- Deletes itself
PID:1504

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
- Suspicious use of SendNotifyMessage
- Suspicious use of FindShellTrayWindow
PID:1864

C:\Windows\system32\DllHost.exe
C:\Windows\system32\DllHost.exe /Processid:{3EB3C877-1F16-487C-9050-104DBCD66683}
1⤵
PID:1044

C:\Windows\system32\DllHost.exe
C:\Windows\system32\DllHost.exe /Processid:{F9717507-6651-4EDB-BFF7-AE615179BCCF}
1⤵
PID:1548

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

Query Registry

1

T1012

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmp08f4a25d.bat

Download Submit
C:\Users\Admin\AppData\Roaming\Emmaos\abaxu.exe

Download Submit
C:\Users\Admin\AppData\Roaming\Emmaos\abaxu.exe

Download Submit
C:\Users\Admin\AppData\Roaming\Ogki\ufys.lep

Download Submit
\Users\Admin\AppData\Roaming\Emmaos\abaxu.exe

Download Submit
\Users\Admin\AppData\Roaming\Emmaos\abaxu.exe

Download Submit
memory/1504-64-0x0000000000190000-0x00000000001C6000-memory.dmp

Filesize
216KB

Download
memory/1504-65-0x000000000019C477-mapping.dmp

Download
memory/1696-2-0x0000000000000000-mapping.dmp

Download
memory/1864-28-0x0000000003E40000-0x0000000003E42000-memory.dmp

Filesize
8KB

Download
memory/1864-32-0x00000000044B0000-0x00000000044B2000-memory.dmp

Filesize
8KB

Download
memory/1864-10-0x0000000003930000-0x0000000003B30000-memory.dmp

Filesize
2.0MB

Download
memory/1864-11-0x0000000003A30000-0x0000000003B30000-memory.dmp

Filesize
1024KB

Download
memory/1864-15-0x00000000024E0000-0x00000000024E2000-memory.dmp

Filesize
8KB

Download
memory/1864-16-0x00000000024F0000-0x00000000024F2000-memory.dmp

Filesize
8KB

Download
memory/1864-17-0x00000000024D0000-0x00000000024D2000-memory.dmp

Filesize
8KB

Download
memory/1864-18-0x0000000003DD0000-0x0000000003DD2000-memory.dmp

Filesize
8KB

Download
memory/1864-19-0x0000000003C80000-0x0000000003C82000-memory.dmp

Filesize
8KB

Download
memory/1864-20-0x0000000003DD0000-0x0000000003DD2000-memory.dmp

Filesize
8KB

Download
memory/1864-21-0x0000000003C70000-0x0000000003C72000-memory.dmp

Filesize
8KB

Download
memory/1864-22-0x0000000003C80000-0x0000000003C82000-memory.dmp

Filesize
8KB

Download
memory/1864-23-0x00000000024F0000-0x00000000024F2000-memory.dmp

Filesize
8KB

Download
memory/1864-24-0x0000000003E60000-0x0000000003E62000-memory.dmp

Filesize
8KB

Download
memory/1864-25-0x00000000044C0000-0x00000000044C2000-memory.dmp

Filesize
8KB

Download
memory/1864-26-0x0000000004550000-0x0000000004552000-memory.dmp

Filesize
8KB

Download
memory/1864-27-0x0000000003CA0000-0x0000000003CA2000-memory.dmp

Filesize
8KB

Download
memory/1864-7-0x0000000003930000-0x0000000003B30000-memory.dmp

Filesize
2.0MB

Download
memory/1864-29-0x0000000004550000-0x0000000004552000-memory.dmp

Filesize
8KB

Download
memory/1864-30-0x0000000004580000-0x0000000004582000-memory.dmp

Filesize
8KB

Download
memory/1864-31-0x0000000003CA0000-0x0000000003CA2000-memory.dmp

Filesize
8KB

Download
memory/1864-9-0x0000000003930000-0x0000000003A30000-memory.dmp

Filesize
1024KB

Download
memory/1864-33-0x0000000003E60000-0x0000000003E62000-memory.dmp

Filesize
8KB

Download
memory/1864-34-0x0000000003CA0000-0x0000000003CA2000-memory.dmp

Filesize
8KB

Download
memory/1864-35-0x00000000044B0000-0x00000000044B2000-memory.dmp

Filesize
8KB

Download
memory/1864-36-0x0000000004580000-0x0000000004582000-memory.dmp

Filesize
8KB

Download
memory/1864-37-0x0000000004420000-0x0000000004422000-memory.dmp

Filesize
8KB

Download
memory/1864-38-0x0000000003B90000-0x0000000003B92000-memory.dmp

Filesize
8KB

Download
memory/1864-39-0x0000000003E60000-0x0000000003E62000-memory.dmp

Filesize
8KB

Download
memory/1864-40-0x00000000044B0000-0x00000000044B2000-memory.dmp

Filesize
8KB

Download
memory/1864-41-0x0000000003CA0000-0x0000000003CA2000-memory.dmp

Filesize
8KB

Download
memory/1864-42-0x0000000003C80000-0x0000000003C82000-memory.dmp

Filesize
8KB

Download
memory/1864-43-0x0000000003C60000-0x0000000003C62000-memory.dmp

Filesize
8KB

Download
memory/1864-45-0x0000000003BA0000-0x0000000003BA2000-memory.dmp

Filesize
8KB

Download
memory/1864-44-0x0000000003C90000-0x0000000003C92000-memory.dmp

Filesize
8KB

Download
memory/1864-46-0x0000000003DF0000-0x0000000003DF2000-memory.dmp

Filesize
8KB

Download
memory/1864-47-0x0000000004410000-0x0000000004412000-memory.dmp

Filesize
8KB

Download
memory/1864-48-0x0000000004400000-0x0000000004402000-memory.dmp

Filesize
8KB

Download
memory/1864-49-0x00000000041D0000-0x00000000041D2000-memory.dmp

Filesize
8KB

Download
memory/1864-5-0x0000000003930000-0x0000000003A30000-memory.dmp

Filesize
1024KB

Download
memory/1864-50-0x0000000003930000-0x0000000003A30000-memory.dmp

Filesize
1024KB

Download
memory/1864-52-0x00000000023D0000-0x00000000023E0000-memory.dmp

Filesize
64KB

Download
memory/1864-58-0x0000000002370000-0x0000000002380000-memory.dmp

Filesize
64KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads