cf31a2e4f481ea90d2d2a71711390ab5261b4702b3f9d2eb74e3ebf9eb2f4a77

General

Target

cf31a2e4f481ea90d2d2a71711390ab5261b4702b3f9d2eb74e3ebf9eb2f4a77.exe
Size

47KB
MD5

609d5056b3945c70c89004f952fd404e
SHA1

36a98623c3fab6e1d9026b3a466214a2eab9327a
SHA256

cf31a2e4f481ea90d2d2a71711390ab5261b4702b3f9d2eb74e3ebf9eb2f4a77
SHA512

63fb8a5576002815d9e629b1fd21e4e1fd821c5240504e6e4dac1de93583473ac202c0ebe473f9be3de8b0a285db35597672d4c7adc58c1ed9345f2168e42e61
SSDEEP

768:Dh3s6PjF/+JltqpQRgeqU7UTh9PjpHJuKmrZgcwqSYk63h8OWZYbM7UlL27llFww:DpQqpQRPbUXPdHErZp45vOkwwURiFnqm

Score

8^/10

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
2012	wnsapitr.exe

UPX packed file 9 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral1/memory/1424-55-0x0000000000400000-0x0000000000426000-memory.dmp	upx
behavioral1/files/0x000a000000012329-56.dat	upx
behavioral1/files/0x0007000000005c50-58.dat	upx
behavioral1/files/0x0007000000005c50-61.dat	upx
behavioral1/files/0x0007000000005c50-59.dat	upx
behavioral1/files/0x0007000000005c50-63.dat	upx
behavioral1/memory/1424-64-0x0000000004040000-0x0000000004066000-memory.dmp	upx
behavioral1/memory/2012-66-0x0000000000400000-0x0000000000426000-memory.dmp	upx
behavioral1/memory/1424-81-0x0000000000400000-0x0000000000426000-memory.dmp	upx

Loads dropped DLL 3 IoCs

pid	Process
1424	cf31a2e4f481ea90d2d2a71711390ab5261b4702b3f9d2eb74e3ebf9eb2f4a77.exe
1424	cf31a2e4f481ea90d2d2a71711390ab5261b4702b3f9d2eb74e3ebf9eb2f4a77.exe
1424	cf31a2e4f481ea90d2d2a71711390ab5261b4702b3f9d2eb74e3ebf9eb2f4a77.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Windows\CurrentVersion\Run\WNST = "C:\\Windows\\system32\\wnsapitr.exe"	cf31a2e4f481ea90d2d2a71711390ab5261b4702b3f9d2eb74e3ebf9eb2f4a77.exe

Drops file in System32 directory 1 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\wnsapitr.exe	cf31a2e4f481ea90d2d2a71711390ab5261b4702b3f9d2eb74e3ebf9eb2f4a77.exe

Drops file in Program Files directory 1 IoCs

description	ioc	Process
File created	C:\Program Files (x86)\PurityScan\PuritySCAN.exe	cf31a2e4f481ea90d2d2a71711390ab5261b4702b3f9d2eb74e3ebf9eb2f4a77.exe

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

System Information Discovery
T1082

Modifies Internet Explorer settings 1 TTPs 1 IoCs

adware spyware

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Internet Explorer\Main	cf31a2e4f481ea90d2d2a71711390ab5261b4702b3f9d2eb74e3ebf9eb2f4a77.exe

Suspicious behavior: EnumeratesProcesses 7 IoCs

pid	Process
1424	cf31a2e4f481ea90d2d2a71711390ab5261b4702b3f9d2eb74e3ebf9eb2f4a77.exe
1424	cf31a2e4f481ea90d2d2a71711390ab5261b4702b3f9d2eb74e3ebf9eb2f4a77.exe
1424	cf31a2e4f481ea90d2d2a71711390ab5261b4702b3f9d2eb74e3ebf9eb2f4a77.exe
2012	wnsapitr.exe
2012	wnsapitr.exe
2012	wnsapitr.exe
2012	wnsapitr.exe

Suspicious use of SetWindowsHookEx 8 IoCs

pid	Process
1424	cf31a2e4f481ea90d2d2a71711390ab5261b4702b3f9d2eb74e3ebf9eb2f4a77.exe
1424	cf31a2e4f481ea90d2d2a71711390ab5261b4702b3f9d2eb74e3ebf9eb2f4a77.exe
1424	cf31a2e4f481ea90d2d2a71711390ab5261b4702b3f9d2eb74e3ebf9eb2f4a77.exe
1424	cf31a2e4f481ea90d2d2a71711390ab5261b4702b3f9d2eb74e3ebf9eb2f4a77.exe
2012	wnsapitr.exe
2012	wnsapitr.exe
2012	wnsapitr.exe
2012	wnsapitr.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 1424 wrote to memory of 2012	1424	cf31a2e4f481ea90d2d2a71711390ab5261b4702b3f9d2eb74e3ebf9eb2f4a77.exe	28
PID 1424 wrote to memory of 2012	1424	cf31a2e4f481ea90d2d2a71711390ab5261b4702b3f9d2eb74e3ebf9eb2f4a77.exe	28
PID 1424 wrote to memory of 2012	1424	cf31a2e4f481ea90d2d2a71711390ab5261b4702b3f9d2eb74e3ebf9eb2f4a77.exe	28
PID 1424 wrote to memory of 2012	1424	cf31a2e4f481ea90d2d2a71711390ab5261b4702b3f9d2eb74e3ebf9eb2f4a77.exe	28

C:\Users\Admin\AppData\Local\Temp\cf31a2e4f481ea90d2d2a71711390ab5261b4702b3f9d2eb74e3ebf9eb2f4a77.exe
"C:\Users\Admin\AppData\Local\Temp\cf31a2e4f481ea90d2d2a71711390ab5261b4702b3f9d2eb74e3ebf9eb2f4a77.exe"
1⤵
- Loads dropped DLL
- Adds Run key to start application
- Drops file in System32 directory
- Drops file in Program Files directory
- Modifies Internet Explorer settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1424
- C:\Windows\SysWOW64\wnsapitr.exe
  "C:\Windows\system32\wnsapitr.exe" /no_ads
  2⤵
  - Executes dropped EXE
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of SetWindowsHookEx
  PID:2012

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

2

T1112

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Windows\SysWOW64\wnsapitr.exe

Filesize
56KB

MD5
6bd74699092454057e6922b4f60c58ba

SHA1
1b74ac7280d9d571709e1ecb12e96ef987d98a3d

SHA256
6d8c7d0dd33eca6af385b954492b313ff92d549b4daa8342039a1ea802b1c2e4

SHA512
c1c8de5678d19536543f1b324e8593399c75b911189b68c888f146b93331f17ecfb28fef3a9e744b3a7c90c63456abc648dda1028e64541a733af866a5896187

Download Submit
C:\Windows\SysWOW64\wnsapitr.exe

Filesize
56KB

MD5
6bd74699092454057e6922b4f60c58ba

SHA1
1b74ac7280d9d571709e1ecb12e96ef987d98a3d

SHA256
6d8c7d0dd33eca6af385b954492b313ff92d549b4daa8342039a1ea802b1c2e4

SHA512
c1c8de5678d19536543f1b324e8593399c75b911189b68c888f146b93331f17ecfb28fef3a9e744b3a7c90c63456abc648dda1028e64541a733af866a5896187

Download Submit
\Program Files (x86)\PurityScan\PuritySCAN.exe

Filesize
56KB

MD5
6bd74699092454057e6922b4f60c58ba

SHA1
1b74ac7280d9d571709e1ecb12e96ef987d98a3d

SHA256
6d8c7d0dd33eca6af385b954492b313ff92d549b4daa8342039a1ea802b1c2e4

SHA512
c1c8de5678d19536543f1b324e8593399c75b911189b68c888f146b93331f17ecfb28fef3a9e744b3a7c90c63456abc648dda1028e64541a733af866a5896187

Download Submit
\Windows\SysWOW64\wnsapitr.exe

Filesize
56KB

MD5
6bd74699092454057e6922b4f60c58ba

SHA1
1b74ac7280d9d571709e1ecb12e96ef987d98a3d

SHA256
6d8c7d0dd33eca6af385b954492b313ff92d549b4daa8342039a1ea802b1c2e4

SHA512
c1c8de5678d19536543f1b324e8593399c75b911189b68c888f146b93331f17ecfb28fef3a9e744b3a7c90c63456abc648dda1028e64541a733af866a5896187

Download Submit
\Windows\SysWOW64\wnsapitr.exe

Filesize
56KB

MD5
6bd74699092454057e6922b4f60c58ba

SHA1
1b74ac7280d9d571709e1ecb12e96ef987d98a3d

SHA256
6d8c7d0dd33eca6af385b954492b313ff92d549b4daa8342039a1ea802b1c2e4

SHA512
c1c8de5678d19536543f1b324e8593399c75b911189b68c888f146b93331f17ecfb28fef3a9e744b3a7c90c63456abc648dda1028e64541a733af866a5896187

Download Submit
memory/1424-57-0x0000000002420000-0x000000000242F000-memory.dmp

Filesize
60KB

Download
memory/1424-54-0x0000000076151000-0x0000000076153000-memory.dmp

Filesize
8KB

Download
memory/1424-55-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/1424-64-0x0000000004040000-0x0000000004066000-memory.dmp

Filesize
152KB

Download
memory/1424-65-0x0000000004040000-0x0000000004066000-memory.dmp

Filesize
152KB

Download
memory/1424-81-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/1424-82-0x0000000002420000-0x000000000242F000-memory.dmp

Filesize
60KB

Download
memory/2012-66-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads