f438532957f9444f4434cdb2c23fefe8017e851d7baef495d3d6ca8d680b76b2

General

Target

f438532957f9444f4434cdb2c23fefe8017e851d7baef495d3d6ca8d680b76b2.exe
Size

172KB
MD5

2e6cf7351829656ba2ddee2f242797f6
SHA1

c2b43d54e850e19b18014b05bf5994cb27e8e27d
SHA256

f438532957f9444f4434cdb2c23fefe8017e851d7baef495d3d6ca8d680b76b2
SHA512

b528682d4acc1ed57085a6a008a5886799e9e2a2ee6c9782299127786c05604a48b8968bda68fe0d92f0ad3a51b4cf3c960dd5eed02d3ac7493e028ff6a01999
SSDEEP

1536:UdSNkv6uzeKHCa0SfHB2QmB8itdmcZYfO+1UOWlNLeYZrLf+1u3df/jT6pxZJWth:kLv6uHJdkvY2+ydeYMvnWtmpzaVmSf/

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:

f438532957f9444f4434cdb2c23fefe8017e851d7baef495d3d6ca8d680b76b2.exemxnup.exe

description	ioc	process
Set value (int)	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0"	f438532957f9444f4434cdb2c23fefe8017e851d7baef495d3d6ca8d680b76b2.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0"	mxnup.exe

Executes dropped EXE 1 IoCs

Processes:

mxnup.exe

pid process

1984 mxnup.exe

pid	process
1984	mxnup.exe

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

Processes:

f438532957f9444f4434cdb2c23fefe8017e851d7baef495d3d6ca8d680b76b2.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\Control Panel\International\Geo\Nation	f438532957f9444f4434cdb2c23fefe8017e851d7baef495d3d6ca8d680b76b2.exe

Adds Run key to start application 2 TTPs 29 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

mxnup.exef438532957f9444f4434cdb2c23fefe8017e851d7baef495d3d6ca8d680b76b2.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\mxnup = "C:\\Users\\Admin\\mxnup.exe /e"	mxnup.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\mxnup = "C:\\Users\\Admin\\mxnup.exe /f"	mxnup.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\mxnup = "C:\\Users\\Admin\\mxnup.exe /q"	mxnup.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\mxnup = "C:\\Users\\Admin\\mxnup.exe /j"	mxnup.exe
Key created	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\Software\Microsoft\Windows\CurrentVersion\Run\	mxnup.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\mxnup = "C:\\Users\\Admin\\mxnup.exe /w"	mxnup.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\mxnup = "C:\\Users\\Admin\\mxnup.exe /y"	mxnup.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\mxnup = "C:\\Users\\Admin\\mxnup.exe /g"	mxnup.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\mxnup = "C:\\Users\\Admin\\mxnup.exe /x"	mxnup.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\mxnup = "C:\\Users\\Admin\\mxnup.exe /t"	mxnup.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\mxnup = "C:\\Users\\Admin\\mxnup.exe /b"	mxnup.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\mxnup = "C:\\Users\\Admin\\mxnup.exe /l"	mxnup.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\mxnup = "C:\\Users\\Admin\\mxnup.exe /s"	mxnup.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\mxnup = "C:\\Users\\Admin\\mxnup.exe /k"	mxnup.exe
Key created	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\Software\Microsoft\Windows\CurrentVersion\Run\	f438532957f9444f4434cdb2c23fefe8017e851d7baef495d3d6ca8d680b76b2.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\mxnup = "C:\\Users\\Admin\\mxnup.exe /i"	mxnup.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\mxnup = "C:\\Users\\Admin\\mxnup.exe /h"	mxnup.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\mxnup = "C:\\Users\\Admin\\mxnup.exe /n"	mxnup.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\mxnup = "C:\\Users\\Admin\\mxnup.exe /p"	mxnup.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\mxnup = "C:\\Users\\Admin\\mxnup.exe /e"	f438532957f9444f4434cdb2c23fefe8017e851d7baef495d3d6ca8d680b76b2.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\mxnup = "C:\\Users\\Admin\\mxnup.exe /z"	mxnup.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\mxnup = "C:\\Users\\Admin\\mxnup.exe /u"	mxnup.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\mxnup = "C:\\Users\\Admin\\mxnup.exe /a"	mxnup.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\mxnup = "C:\\Users\\Admin\\mxnup.exe /d"	mxnup.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\mxnup = "C:\\Users\\Admin\\mxnup.exe /r"	mxnup.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\mxnup = "C:\\Users\\Admin\\mxnup.exe /c"	mxnup.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\mxnup = "C:\\Users\\Admin\\mxnup.exe /v"	mxnup.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\mxnup = "C:\\Users\\Admin\\mxnup.exe /m"	mxnup.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\mxnup = "C:\\Users\\Admin\\mxnup.exe /o"	mxnup.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:

f438532957f9444f4434cdb2c23fefe8017e851d7baef495d3d6ca8d680b76b2.exemxnup.exe

pid	process
4104	f438532957f9444f4434cdb2c23fefe8017e851d7baef495d3d6ca8d680b76b2.exe
4104	f438532957f9444f4434cdb2c23fefe8017e851d7baef495d3d6ca8d680b76b2.exe
1984	mxnup.exe
1984	mxnup.exe
1984	mxnup.exe
1984	mxnup.exe
1984	mxnup.exe
1984	mxnup.exe
1984	mxnup.exe
1984	mxnup.exe
1984	mxnup.exe
1984	mxnup.exe
1984	mxnup.exe
1984	mxnup.exe
1984	mxnup.exe
1984	mxnup.exe
1984	mxnup.exe
1984	mxnup.exe
1984	mxnup.exe
1984	mxnup.exe
1984	mxnup.exe
1984	mxnup.exe
1984	mxnup.exe
1984	mxnup.exe
1984	mxnup.exe
1984	mxnup.exe
1984	mxnup.exe
1984	mxnup.exe
1984	mxnup.exe
1984	mxnup.exe
1984	mxnup.exe
1984	mxnup.exe
1984	mxnup.exe
1984	mxnup.exe
1984	mxnup.exe
1984	mxnup.exe
1984	mxnup.exe
1984	mxnup.exe
1984	mxnup.exe
1984	mxnup.exe
1984	mxnup.exe
1984	mxnup.exe
1984	mxnup.exe
1984	mxnup.exe
1984	mxnup.exe
1984	mxnup.exe
1984	mxnup.exe
1984	mxnup.exe
1984	mxnup.exe
1984	mxnup.exe
1984	mxnup.exe
1984	mxnup.exe
1984	mxnup.exe
1984	mxnup.exe
1984	mxnup.exe
1984	mxnup.exe
1984	mxnup.exe
1984	mxnup.exe
1984	mxnup.exe
1984	mxnup.exe
1984	mxnup.exe
1984	mxnup.exe
1984	mxnup.exe
1984	mxnup.exe

Suspicious use of SetWindowsHookEx 2 IoCs

Processes:

f438532957f9444f4434cdb2c23fefe8017e851d7baef495d3d6ca8d680b76b2.exemxnup.exe

pid process

4104 f438532957f9444f4434cdb2c23fefe8017e851d7baef495d3d6ca8d680b76b2.exe
1984 mxnup.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

f438532957f9444f4434cdb2c23fefe8017e851d7baef495d3d6ca8d680b76b2.exe

description	pid	process	target process
PID 4104 wrote to memory of 1984	4104	f438532957f9444f4434cdb2c23fefe8017e851d7baef495d3d6ca8d680b76b2.exe	mxnup.exe
PID 4104 wrote to memory of 1984	4104	f438532957f9444f4434cdb2c23fefe8017e851d7baef495d3d6ca8d680b76b2.exe	mxnup.exe
PID 4104 wrote to memory of 1984	4104	f438532957f9444f4434cdb2c23fefe8017e851d7baef495d3d6ca8d680b76b2.exe	mxnup.exe

C:\Users\Admin\AppData\Local\Temp\f438532957f9444f4434cdb2c23fefe8017e851d7baef495d3d6ca8d680b76b2.exe
"C:\Users\Admin\AppData\Local\Temp\f438532957f9444f4434cdb2c23fefe8017e851d7baef495d3d6ca8d680b76b2.exe"
1⤵
- Modifies visiblity of hidden/system files in Explorer
- Checks computer location settings
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4104

C:\Users\Admin\mxnup.exe
"C:\Users\Admin\mxnup.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:1984

Network

MITRE ATT&CK Enterprise 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

Modify Registry

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\mxnup.exe

Filesize
172KB

MD5
972141e01e1dbc9c4aefb41624159b61

SHA1
0feb28976e80f47a99eae50394f79910163fcaf6

SHA256
c6e76ef58643f315a3e4319c53603f086582359cbf8075092a6e474ac9c4e0eb

SHA512
e52b607827b08e1ef86b21e14c070a89c7e05187a450a62338c20a68bc1fbdd54d2e61f42a704ee8131580775d0ed2fdcf070c7170e5ec0ca1f40201395fb25d

Download Submit
C:\Users\Admin\mxnup.exe

Filesize
172KB

MD5
972141e01e1dbc9c4aefb41624159b61

SHA1
0feb28976e80f47a99eae50394f79910163fcaf6

SHA256
c6e76ef58643f315a3e4319c53603f086582359cbf8075092a6e474ac9c4e0eb

SHA512
e52b607827b08e1ef86b21e14c070a89c7e05187a450a62338c20a68bc1fbdd54d2e61f42a704ee8131580775d0ed2fdcf070c7170e5ec0ca1f40201395fb25d

Download Submit
memory/1984-135-0x0000000000000000-mapping.dmp

Download
memory/1984-140-0x0000000000400000-0x0000000000434000-memory.dmp

Filesize
208KB

Download
memory/1984-142-0x0000000000400000-0x0000000000434000-memory.dmp

Filesize
208KB

Download
memory/4104-134-0x0000000000400000-0x0000000000434000-memory.dmp

Filesize
208KB

Download
memory/4104-141-0x0000000000400000-0x0000000000434000-memory.dmp

Filesize
208KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads