e73b6e84389fb3c5a96634010b6ae3de1480701d04aa442a642a5f4639050050

General

Target

e73b6e84389fb3c5a96634010b6ae3de1480701d04aa442a642a5f4639050050.exe
Size

180KB
MD5

5afa821c64f2dcd9bbe95c64f929fc5c
SHA1

35c423c30d3ba3e494abc558f3f06bff81268c37
SHA256

e73b6e84389fb3c5a96634010b6ae3de1480701d04aa442a642a5f4639050050
SHA512

71216f4cb346f6bae0a88d3111c0c5dc446b7e04cf0acec7d1bf3d4f6601bf7232cf630b4c58dc8a50f559e83cc42b332f7456694bb96f23363ece11a75dce03
SSDEEP

3072:6IMGdYRLoeEdRos/eaqFnqWDb+uTyLDC6s5sSYqGlC6YViZj5HQXZmmJ0yCFiox+:VtcKPpm2lC6YViZj5HQXZmmJ0yCF9Bx/

Score

10^/10

evasion persistence

Malware Config

Signatures

Modifies visiblity of hidden/system files in Explorer 2 TTPs 2 IoCs

evasion

Hidden Files and Directories

T1158

Modify Registry

T1112

Processes:

e73b6e84389fb3c5a96634010b6ae3de1480701d04aa442a642a5f4639050050.exekoitui.exe

description	ioc	process
Set value (int)	\REGISTRY\USER\S-1-5-21-3406023954-474543476-3319432036-1000\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0"	e73b6e84389fb3c5a96634010b6ae3de1480701d04aa442a642a5f4639050050.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-3406023954-474543476-3319432036-1000\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0"	koitui.exe

Executes dropped EXE 1 IoCs

Processes:

koitui.exe

pid process

1272 koitui.exe

pid	process
1272	koitui.exe

Loads dropped DLL 2 IoCs

Processes:

e73b6e84389fb3c5a96634010b6ae3de1480701d04aa442a642a5f4639050050.exe

pid	process
2044	e73b6e84389fb3c5a96634010b6ae3de1480701d04aa442a642a5f4639050050.exe
2044	e73b6e84389fb3c5a96634010b6ae3de1480701d04aa442a642a5f4639050050.exe

Adds Run key to start application 2 TTPs 49 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

e73b6e84389fb3c5a96634010b6ae3de1480701d04aa442a642a5f4639050050.exekoitui.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-3406023954-474543476-3319432036-1000\Software\Microsoft\Windows\CurrentVersion\Run\koitui = "C:\\Users\\Admin\\koitui.exe /u"	e73b6e84389fb3c5a96634010b6ae3de1480701d04aa442a642a5f4639050050.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3406023954-474543476-3319432036-1000\Software\Microsoft\Windows\CurrentVersion\Run\koitui = "C:\\Users\\Admin\\koitui.exe /g"	koitui.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3406023954-474543476-3319432036-1000\Software\Microsoft\Windows\CurrentVersion\Run\koitui = "C:\\Users\\Admin\\koitui.exe /t"	koitui.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3406023954-474543476-3319432036-1000\Software\Microsoft\Windows\CurrentVersion\Run\koitui = "C:\\Users\\Admin\\koitui.exe /P"	koitui.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3406023954-474543476-3319432036-1000\Software\Microsoft\Windows\CurrentVersion\Run\koitui = "C:\\Users\\Admin\\koitui.exe /C"	koitui.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3406023954-474543476-3319432036-1000\Software\Microsoft\Windows\CurrentVersion\Run\koitui = "C:\\Users\\Admin\\koitui.exe /X"	koitui.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3406023954-474543476-3319432036-1000\Software\Microsoft\Windows\CurrentVersion\Run\koitui = "C:\\Users\\Admin\\koitui.exe /n"	koitui.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3406023954-474543476-3319432036-1000\Software\Microsoft\Windows\CurrentVersion\Run\koitui = "C:\\Users\\Admin\\koitui.exe /Z"	koitui.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3406023954-474543476-3319432036-1000\Software\Microsoft\Windows\CurrentVersion\Run\koitui = "C:\\Users\\Admin\\koitui.exe /j"	koitui.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3406023954-474543476-3319432036-1000\Software\Microsoft\Windows\CurrentVersion\Run\koitui = "C:\\Users\\Admin\\koitui.exe /z"	koitui.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3406023954-474543476-3319432036-1000\Software\Microsoft\Windows\CurrentVersion\Run\koitui = "C:\\Users\\Admin\\koitui.exe /T"	koitui.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3406023954-474543476-3319432036-1000\Software\Microsoft\Windows\CurrentVersion\Run\koitui = "C:\\Users\\Admin\\koitui.exe /l"	koitui.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3406023954-474543476-3319432036-1000\Software\Microsoft\Windows\CurrentVersion\Run\koitui = "C:\\Users\\Admin\\koitui.exe /w"	koitui.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3406023954-474543476-3319432036-1000\Software\Microsoft\Windows\CurrentVersion\Run\koitui = "C:\\Users\\Admin\\koitui.exe /u"	koitui.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3406023954-474543476-3319432036-1000\Software\Microsoft\Windows\CurrentVersion\Run\koitui = "C:\\Users\\Admin\\koitui.exe /N"	koitui.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3406023954-474543476-3319432036-1000\Software\Microsoft\Windows\CurrentVersion\Run\koitui = "C:\\Users\\Admin\\koitui.exe /b"	koitui.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3406023954-474543476-3319432036-1000\Software\Microsoft\Windows\CurrentVersion\Run\koitui = "C:\\Users\\Admin\\koitui.exe /D"	koitui.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3406023954-474543476-3319432036-1000\Software\Microsoft\Windows\CurrentVersion\Run\koitui = "C:\\Users\\Admin\\koitui.exe /y"	koitui.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3406023954-474543476-3319432036-1000\Software\Microsoft\Windows\CurrentVersion\Run\koitui = "C:\\Users\\Admin\\koitui.exe /I"	koitui.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3406023954-474543476-3319432036-1000\Software\Microsoft\Windows\CurrentVersion\Run\koitui = "C:\\Users\\Admin\\koitui.exe /e"	koitui.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3406023954-474543476-3319432036-1000\Software\Microsoft\Windows\CurrentVersion\Run\koitui = "C:\\Users\\Admin\\koitui.exe /E"	koitui.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3406023954-474543476-3319432036-1000\Software\Microsoft\Windows\CurrentVersion\Run\koitui = "C:\\Users\\Admin\\koitui.exe /F"	koitui.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3406023954-474543476-3319432036-1000\Software\Microsoft\Windows\CurrentVersion\Run\koitui = "C:\\Users\\Admin\\koitui.exe /f"	koitui.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3406023954-474543476-3319432036-1000\Software\Microsoft\Windows\CurrentVersion\Run\koitui = "C:\\Users\\Admin\\koitui.exe /Q"	koitui.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3406023954-474543476-3319432036-1000\Software\Microsoft\Windows\CurrentVersion\Run\koitui = "C:\\Users\\Admin\\koitui.exe /H"	koitui.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3406023954-474543476-3319432036-1000\Software\Microsoft\Windows\CurrentVersion\Run\koitui = "C:\\Users\\Admin\\koitui.exe /o"	koitui.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3406023954-474543476-3319432036-1000\Software\Microsoft\Windows\CurrentVersion\Run\koitui = "C:\\Users\\Admin\\koitui.exe /G"	koitui.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3406023954-474543476-3319432036-1000\Software\Microsoft\Windows\CurrentVersion\Run\koitui = "C:\\Users\\Admin\\koitui.exe /W"	koitui.exe
Key created	\REGISTRY\USER\S-1-5-21-3406023954-474543476-3319432036-1000\Software\Microsoft\Windows\CurrentVersion\Run\	e73b6e84389fb3c5a96634010b6ae3de1480701d04aa442a642a5f4639050050.exe
Key created	\REGISTRY\USER\S-1-5-21-3406023954-474543476-3319432036-1000\Software\Microsoft\Windows\CurrentVersion\Run\	koitui.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3406023954-474543476-3319432036-1000\Software\Microsoft\Windows\CurrentVersion\Run\koitui = "C:\\Users\\Admin\\koitui.exe /M"	koitui.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3406023954-474543476-3319432036-1000\Software\Microsoft\Windows\CurrentVersion\Run\koitui = "C:\\Users\\Admin\\koitui.exe /i"	koitui.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3406023954-474543476-3319432036-1000\Software\Microsoft\Windows\CurrentVersion\Run\koitui = "C:\\Users\\Admin\\koitui.exe /q"	koitui.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3406023954-474543476-3319432036-1000\Software\Microsoft\Windows\CurrentVersion\Run\koitui = "C:\\Users\\Admin\\koitui.exe /K"	koitui.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3406023954-474543476-3319432036-1000\Software\Microsoft\Windows\CurrentVersion\Run\koitui = "C:\\Users\\Admin\\koitui.exe /k"	koitui.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3406023954-474543476-3319432036-1000\Software\Microsoft\Windows\CurrentVersion\Run\koitui = "C:\\Users\\Admin\\koitui.exe /A"	koitui.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3406023954-474543476-3319432036-1000\Software\Microsoft\Windows\CurrentVersion\Run\koitui = "C:\\Users\\Admin\\koitui.exe /L"	koitui.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3406023954-474543476-3319432036-1000\Software\Microsoft\Windows\CurrentVersion\Run\koitui = "C:\\Users\\Admin\\koitui.exe /U"	koitui.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3406023954-474543476-3319432036-1000\Software\Microsoft\Windows\CurrentVersion\Run\koitui = "C:\\Users\\Admin\\koitui.exe /V"	koitui.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3406023954-474543476-3319432036-1000\Software\Microsoft\Windows\CurrentVersion\Run\koitui = "C:\\Users\\Admin\\koitui.exe /R"	koitui.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3406023954-474543476-3319432036-1000\Software\Microsoft\Windows\CurrentVersion\Run\koitui = "C:\\Users\\Admin\\koitui.exe /v"	koitui.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3406023954-474543476-3319432036-1000\Software\Microsoft\Windows\CurrentVersion\Run\koitui = "C:\\Users\\Admin\\koitui.exe /J"	koitui.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3406023954-474543476-3319432036-1000\Software\Microsoft\Windows\CurrentVersion\Run\koitui = "C:\\Users\\Admin\\koitui.exe /Y"	koitui.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3406023954-474543476-3319432036-1000\Software\Microsoft\Windows\CurrentVersion\Run\koitui = "C:\\Users\\Admin\\koitui.exe /c"	koitui.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3406023954-474543476-3319432036-1000\Software\Microsoft\Windows\CurrentVersion\Run\koitui = "C:\\Users\\Admin\\koitui.exe /O"	koitui.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3406023954-474543476-3319432036-1000\Software\Microsoft\Windows\CurrentVersion\Run\koitui = "C:\\Users\\Admin\\koitui.exe /B"	koitui.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3406023954-474543476-3319432036-1000\Software\Microsoft\Windows\CurrentVersion\Run\koitui = "C:\\Users\\Admin\\koitui.exe /h"	koitui.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3406023954-474543476-3319432036-1000\Software\Microsoft\Windows\CurrentVersion\Run\koitui = "C:\\Users\\Admin\\koitui.exe /S"	koitui.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3406023954-474543476-3319432036-1000\Software\Microsoft\Windows\CurrentVersion\Run\koitui = "C:\\Users\\Admin\\koitui.exe /p"	koitui.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 64 IoCs

Processes:

e73b6e84389fb3c5a96634010b6ae3de1480701d04aa442a642a5f4639050050.exekoitui.exe

pid	process
2044	e73b6e84389fb3c5a96634010b6ae3de1480701d04aa442a642a5f4639050050.exe
1272	koitui.exe
1272	koitui.exe
1272	koitui.exe
1272	koitui.exe
1272	koitui.exe
1272	koitui.exe
1272	koitui.exe
1272	koitui.exe
1272	koitui.exe
1272	koitui.exe
1272	koitui.exe
1272	koitui.exe
1272	koitui.exe
1272	koitui.exe
1272	koitui.exe
1272	koitui.exe
1272	koitui.exe
1272	koitui.exe
1272	koitui.exe
1272	koitui.exe
1272	koitui.exe
1272	koitui.exe
1272	koitui.exe
1272	koitui.exe
1272	koitui.exe
1272	koitui.exe
1272	koitui.exe
1272	koitui.exe
1272	koitui.exe
1272	koitui.exe
1272	koitui.exe
1272	koitui.exe
1272	koitui.exe
1272	koitui.exe
1272	koitui.exe
1272	koitui.exe
1272	koitui.exe
1272	koitui.exe
1272	koitui.exe
1272	koitui.exe
1272	koitui.exe
1272	koitui.exe
1272	koitui.exe
1272	koitui.exe
1272	koitui.exe
1272	koitui.exe
1272	koitui.exe
1272	koitui.exe
1272	koitui.exe
1272	koitui.exe
1272	koitui.exe
1272	koitui.exe
1272	koitui.exe
1272	koitui.exe
1272	koitui.exe
1272	koitui.exe
1272	koitui.exe
1272	koitui.exe
1272	koitui.exe
1272	koitui.exe
1272	koitui.exe
1272	koitui.exe
1272	koitui.exe

Suspicious use of SetWindowsHookEx 2 IoCs

Processes:

e73b6e84389fb3c5a96634010b6ae3de1480701d04aa442a642a5f4639050050.exekoitui.exe

pid process

2044 e73b6e84389fb3c5a96634010b6ae3de1480701d04aa442a642a5f4639050050.exe
1272 koitui.exe

Suspicious use of WriteProcessMemory 4 IoCs

Processes:

e73b6e84389fb3c5a96634010b6ae3de1480701d04aa442a642a5f4639050050.exe

description	pid	process	target process
PID 2044 wrote to memory of 1272	2044	e73b6e84389fb3c5a96634010b6ae3de1480701d04aa442a642a5f4639050050.exe	koitui.exe
PID 2044 wrote to memory of 1272	2044	e73b6e84389fb3c5a96634010b6ae3de1480701d04aa442a642a5f4639050050.exe	koitui.exe
PID 2044 wrote to memory of 1272	2044	e73b6e84389fb3c5a96634010b6ae3de1480701d04aa442a642a5f4639050050.exe	koitui.exe
PID 2044 wrote to memory of 1272	2044	e73b6e84389fb3c5a96634010b6ae3de1480701d04aa442a642a5f4639050050.exe	koitui.exe

C:\Users\Admin\AppData\Local\Temp\e73b6e84389fb3c5a96634010b6ae3de1480701d04aa442a642a5f4639050050.exe
"C:\Users\Admin\AppData\Local\Temp\e73b6e84389fb3c5a96634010b6ae3de1480701d04aa442a642a5f4639050050.exe"
1⤵
- Modifies visiblity of hidden/system files in Explorer
- Loads dropped DLL
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2044

C:\Users\Admin\koitui.exe
"C:\Users\Admin\koitui.exe"
2⤵
- Modifies visiblity of hidden/system files in Explorer
- Executes dropped EXE
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetWindowsHookEx
PID:1272

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Hidden Files and Directories

1

T1158

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Hidden Files and Directories

1

T1158

Modify Registry

2

T1112

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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Downloads

C:\Users\Admin\koitui.exe
Filesize
180KB

MD5
b5b6c0042bd88ff02453b62f8b5ffc17

SHA1
26674886c07df0042a79d0a995aca4f1b26bbcfc

SHA256
66bad2a367a238ea658ecbf827e29ee91eb3b4f7a9cd874d84b1d539330ba558

SHA512
1ababad8c77967957512f6ef3b1079a48323b463ed8c0635455bfcdec3f4f000ba8e4b7a3596355cf085f10a4a2691e7cd34dda4dd38563e2765bcc345854383

Download Submit
C:\Users\Admin\koitui.exe
Filesize
180KB

MD5
b5b6c0042bd88ff02453b62f8b5ffc17

SHA1
26674886c07df0042a79d0a995aca4f1b26bbcfc

SHA256
66bad2a367a238ea658ecbf827e29ee91eb3b4f7a9cd874d84b1d539330ba558

SHA512
1ababad8c77967957512f6ef3b1079a48323b463ed8c0635455bfcdec3f4f000ba8e4b7a3596355cf085f10a4a2691e7cd34dda4dd38563e2765bcc345854383

Download Submit
\Users\Admin\koitui.exe
Filesize
180KB

MD5
b5b6c0042bd88ff02453b62f8b5ffc17

SHA1
26674886c07df0042a79d0a995aca4f1b26bbcfc

SHA256
66bad2a367a238ea658ecbf827e29ee91eb3b4f7a9cd874d84b1d539330ba558

SHA512
1ababad8c77967957512f6ef3b1079a48323b463ed8c0635455bfcdec3f4f000ba8e4b7a3596355cf085f10a4a2691e7cd34dda4dd38563e2765bcc345854383

Download Submit
\Users\Admin\koitui.exe
Filesize
180KB

MD5
b5b6c0042bd88ff02453b62f8b5ffc17

SHA1
26674886c07df0042a79d0a995aca4f1b26bbcfc

SHA256
66bad2a367a238ea658ecbf827e29ee91eb3b4f7a9cd874d84b1d539330ba558

SHA512
1ababad8c77967957512f6ef3b1079a48323b463ed8c0635455bfcdec3f4f000ba8e4b7a3596355cf085f10a4a2691e7cd34dda4dd38563e2765bcc345854383

Download Submit
memory/1272-59-0x0000000000000000-mapping.dmp

Download
memory/2044-56-0x0000000076651000-0x0000000076653000-memory.dmp

Filesize
8KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads