977ee0929ebf9bc48877575a35d2c6ffd6168978cffc1c36c00c0279ec85f4bd

General

Target

977ee0929ebf9bc48877575a35d2c6ffd6168978cffc1c36c00c0279ec85f4bd.exe
Size

208KB
MD5

4bf1fd8555c274b1a50f512a479b32cc
SHA1

58eca0653bff679c22c2f9bd220d69c5a0fcf937
SHA256

977ee0929ebf9bc48877575a35d2c6ffd6168978cffc1c36c00c0279ec85f4bd
SHA512

62a9b4c24eea91fe736053a1dde9d61c2a32d0b27c2adcd532fde75ef2c2260f8131a440db2002a35c73c3d0ed2ce576182f10c4c396b0772e6a7244b4832c95
SSDEEP

3072:lZnvjUPKMszPIU8+pHj7VxaPD4XitC62gq3Hedbe/:lQyIr47G7B86vg8by

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:

977ee0929ebf9bc48877575a35d2c6ffd6168978cffc1c36c00c0279ec85f4bd.execaufai.exe

description	ioc	process
Set value (int)	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0"	977ee0929ebf9bc48877575a35d2c6ffd6168978cffc1c36c00c0279ec85f4bd.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0"	caufai.exe

Executes dropped EXE 1 IoCs

Processes:

caufai.exe

pid process

1020 caufai.exe

pid	process
1020	caufai.exe

Loads dropped DLL 2 IoCs

Processes:

977ee0929ebf9bc48877575a35d2c6ffd6168978cffc1c36c00c0279ec85f4bd.exe

pid	process
1932	977ee0929ebf9bc48877575a35d2c6ffd6168978cffc1c36c00c0279ec85f4bd.exe
1932	977ee0929ebf9bc48877575a35d2c6ffd6168978cffc1c36c00c0279ec85f4bd.exe

Adds Run key to start application 2 TTPs 29 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

caufai.exe977ee0929ebf9bc48877575a35d2c6ffd6168978cffc1c36c00c0279ec85f4bd.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\caufai = "C:\\Users\\Admin\\caufai.exe /v"	caufai.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\caufai = "C:\\Users\\Admin\\caufai.exe /p"	caufai.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\caufai = "C:\\Users\\Admin\\caufai.exe /n"	caufai.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\caufai = "C:\\Users\\Admin\\caufai.exe /a"	caufai.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\caufai = "C:\\Users\\Admin\\caufai.exe /t"	caufai.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\caufai = "C:\\Users\\Admin\\caufai.exe /b"	caufai.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\caufai = "C:\\Users\\Admin\\caufai.exe /l"	caufai.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\caufai = "C:\\Users\\Admin\\caufai.exe /d"	caufai.exe
Key created	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\	977ee0929ebf9bc48877575a35d2c6ffd6168978cffc1c36c00c0279ec85f4bd.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\caufai = "C:\\Users\\Admin\\caufai.exe /q"	caufai.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\caufai = "C:\\Users\\Admin\\caufai.exe /g"	caufai.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\caufai = "C:\\Users\\Admin\\caufai.exe /s"	caufai.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\caufai = "C:\\Users\\Admin\\caufai.exe /c"	caufai.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\caufai = "C:\\Users\\Admin\\caufai.exe /u"	caufai.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\caufai = "C:\\Users\\Admin\\caufai.exe /m"	caufai.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\caufai = "C:\\Users\\Admin\\caufai.exe /i"	caufai.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\caufai = "C:\\Users\\Admin\\caufai.exe /k"	caufai.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\caufai = "C:\\Users\\Admin\\caufai.exe /x"	caufai.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\caufai = "C:\\Users\\Admin\\caufai.exe /f"	caufai.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\caufai = "C:\\Users\\Admin\\caufai.exe /o"	caufai.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\caufai = "C:\\Users\\Admin\\caufai.exe /j"	caufai.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\caufai = "C:\\Users\\Admin\\caufai.exe /w"	caufai.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\caufai = "C:\\Users\\Admin\\caufai.exe /y"	caufai.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\caufai = "C:\\Users\\Admin\\caufai.exe /h"	caufai.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\caufai = "C:\\Users\\Admin\\caufai.exe /r"	caufai.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\caufai = "C:\\Users\\Admin\\caufai.exe /p"	977ee0929ebf9bc48877575a35d2c6ffd6168978cffc1c36c00c0279ec85f4bd.exe
Key created	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\	caufai.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\caufai = "C:\\Users\\Admin\\caufai.exe /e"	caufai.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\caufai = "C:\\Users\\Admin\\caufai.exe /z"	caufai.exe

Maps connected drives based on registry 3 TTPs 4 IoCs

Disk information is often read in order to detect sandboxing environments.

Query Registry

T1012

Peripheral Device Discovery

T1120

System Information Discovery

T1082

Processes:

caufai.exe977ee0929ebf9bc48877575a35d2c6ffd6168978cffc1c36c00c0279ec85f4bd.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum	caufai.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\Disk\Enum\0	caufai.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum	977ee0929ebf9bc48877575a35d2c6ffd6168978cffc1c36c00c0279ec85f4bd.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\Disk\Enum\0	977ee0929ebf9bc48877575a35d2c6ffd6168978cffc1c36c00c0279ec85f4bd.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:

977ee0929ebf9bc48877575a35d2c6ffd6168978cffc1c36c00c0279ec85f4bd.execaufai.exe

pid	process
1932	977ee0929ebf9bc48877575a35d2c6ffd6168978cffc1c36c00c0279ec85f4bd.exe
1020	caufai.exe
1020	caufai.exe
1020	caufai.exe
1020	caufai.exe
1020	caufai.exe
1020	caufai.exe
1020	caufai.exe
1020	caufai.exe
1020	caufai.exe
1020	caufai.exe
1020	caufai.exe
1020	caufai.exe
1020	caufai.exe
1020	caufai.exe
1020	caufai.exe
1020	caufai.exe
1020	caufai.exe
1020	caufai.exe
1020	caufai.exe
1020	caufai.exe
1020	caufai.exe
1020	caufai.exe
1020	caufai.exe
1020	caufai.exe
1020	caufai.exe
1020	caufai.exe
1020	caufai.exe
1020	caufai.exe
1020	caufai.exe
1020	caufai.exe
1020	caufai.exe
1020	caufai.exe
1020	caufai.exe
1020	caufai.exe
1020	caufai.exe
1020	caufai.exe
1020	caufai.exe
1020	caufai.exe
1020	caufai.exe
1020	caufai.exe
1020	caufai.exe
1020	caufai.exe
1020	caufai.exe
1020	caufai.exe
1020	caufai.exe
1020	caufai.exe
1020	caufai.exe
1020	caufai.exe
1020	caufai.exe
1020	caufai.exe
1020	caufai.exe
1020	caufai.exe
1020	caufai.exe
1020	caufai.exe
1020	caufai.exe
1020	caufai.exe
1020	caufai.exe
1020	caufai.exe
1020	caufai.exe
1020	caufai.exe
1020	caufai.exe
1020	caufai.exe
1020	caufai.exe

Suspicious use of SetWindowsHookEx 2 IoCs

Processes:

977ee0929ebf9bc48877575a35d2c6ffd6168978cffc1c36c00c0279ec85f4bd.execaufai.exe

pid process

1932 977ee0929ebf9bc48877575a35d2c6ffd6168978cffc1c36c00c0279ec85f4bd.exe
1020 caufai.exe

Suspicious use of WriteProcessMemory 4 IoCs

Processes:

977ee0929ebf9bc48877575a35d2c6ffd6168978cffc1c36c00c0279ec85f4bd.exe

description	pid	process	target process
PID 1932 wrote to memory of 1020	1932	977ee0929ebf9bc48877575a35d2c6ffd6168978cffc1c36c00c0279ec85f4bd.exe	caufai.exe
PID 1932 wrote to memory of 1020	1932	977ee0929ebf9bc48877575a35d2c6ffd6168978cffc1c36c00c0279ec85f4bd.exe	caufai.exe
PID 1932 wrote to memory of 1020	1932	977ee0929ebf9bc48877575a35d2c6ffd6168978cffc1c36c00c0279ec85f4bd.exe	caufai.exe
PID 1932 wrote to memory of 1020	1932	977ee0929ebf9bc48877575a35d2c6ffd6168978cffc1c36c00c0279ec85f4bd.exe	caufai.exe

C:\Users\Admin\AppData\Local\Temp\977ee0929ebf9bc48877575a35d2c6ffd6168978cffc1c36c00c0279ec85f4bd.exe
"C:\Users\Admin\AppData\Local\Temp\977ee0929ebf9bc48877575a35d2c6ffd6168978cffc1c36c00c0279ec85f4bd.exe"
1⤵
- Modifies visiblity of hidden/system files in Explorer
- Loads dropped DLL
- Adds Run key to start application
- Maps connected drives based on registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1932

C:\Users\Admin\caufai.exe
"C:\Users\Admin\caufai.exe"
2⤵
- Modifies visiblity of hidden/system files in Explorer
- Executes dropped EXE
- Adds Run key to start application
- Maps connected drives based on registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetWindowsHookEx
PID:1020

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

Query Registry

1

T1012

Peripheral Device Discovery

1

T1120

System Information Discovery

2

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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Downloads

C:\Users\Admin\caufai.exe
Filesize
208KB

MD5
4bf1fd8555c274b1a50f512a479b32cc

SHA1
58eca0653bff679c22c2f9bd220d69c5a0fcf937

SHA256
977ee0929ebf9bc48877575a35d2c6ffd6168978cffc1c36c00c0279ec85f4bd

SHA512
62a9b4c24eea91fe736053a1dde9d61c2a32d0b27c2adcd532fde75ef2c2260f8131a440db2002a35c73c3d0ed2ce576182f10c4c396b0772e6a7244b4832c95

Download Submit
C:\Users\Admin\caufai.exe
Filesize
208KB

MD5
4bf1fd8555c274b1a50f512a479b32cc

SHA1
58eca0653bff679c22c2f9bd220d69c5a0fcf937

SHA256
977ee0929ebf9bc48877575a35d2c6ffd6168978cffc1c36c00c0279ec85f4bd

SHA512
62a9b4c24eea91fe736053a1dde9d61c2a32d0b27c2adcd532fde75ef2c2260f8131a440db2002a35c73c3d0ed2ce576182f10c4c396b0772e6a7244b4832c95

Download Submit
\Users\Admin\caufai.exe
Filesize
208KB

MD5
4bf1fd8555c274b1a50f512a479b32cc

SHA1
58eca0653bff679c22c2f9bd220d69c5a0fcf937

SHA256
977ee0929ebf9bc48877575a35d2c6ffd6168978cffc1c36c00c0279ec85f4bd

SHA512
62a9b4c24eea91fe736053a1dde9d61c2a32d0b27c2adcd532fde75ef2c2260f8131a440db2002a35c73c3d0ed2ce576182f10c4c396b0772e6a7244b4832c95

Download Submit
\Users\Admin\caufai.exe
Filesize
208KB

MD5
4bf1fd8555c274b1a50f512a479b32cc

SHA1
58eca0653bff679c22c2f9bd220d69c5a0fcf937

SHA256
977ee0929ebf9bc48877575a35d2c6ffd6168978cffc1c36c00c0279ec85f4bd

SHA512
62a9b4c24eea91fe736053a1dde9d61c2a32d0b27c2adcd532fde75ef2c2260f8131a440db2002a35c73c3d0ed2ce576182f10c4c396b0772e6a7244b4832c95

Download Submit
memory/1020-59-0x0000000000000000-mapping.dmp

Download
memory/1932-56-0x0000000075981000-0x0000000075983000-memory.dmp

Filesize
8KB

Download
memory/1932-64-0x0000000073AB1000-0x0000000073AB3000-memory.dmp

Filesize
8KB

Download
memory/1932-66-0x0000000073FB1000-0x0000000073FB3000-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