ba1f50e519abf2bda8f392321e6459ea6884023bd1d95085bd5189f25e15bcb0

General

Target

Serpodtudpwhhta.dll
Size

4.3MB
MD5

d655d63c333b99837e91ddd62a6f54b1
SHA1

eafb8132ab5d441bd24121db5d3d65880a68c0be
SHA256

ba1f50e519abf2bda8f392321e6459ea6884023bd1d95085bd5189f25e15bcb0
SHA512

8e39ac896100f7b2c7e68f9217fad56776780c2daa67f1eb6a31a3efca81c9cbaae3b640abb14188e997132bf078348ccaf3af34344d95baa9f52dfad5137c9b
SSDEEP

98304:2Ekp3AUUgGFofLw++PxAbc5rh5Ar/04TAIP:gp31UtFmLw95Abc5rh5Ar/NTA

Score

8^/10

Malware Config

Signatures

Blocklisted process makes network request 2 IoCs

Processes:

rundll32.exe

flow pid process

3 1528 rundll32.exe
5 1528 rundll32.exe
Suspicious use of SetThreadContext 1 IoCs

Processes:

rundll32.exe

description pid process target process

PID 1528 set thread context of 1004 1528 rundll32.exe rundll32.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

flow	pid	process
3	1528	rundll32.exe
5	1528	rundll32.exe

description	pid	process	target process
PID 1528 set thread context of 1004	1528	rundll32.exe	rundll32.exe

Checks processor information in registry 2 TTPs 19 IoCs

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

Query Registry

T1012

System Information Discovery

T1082

Processes:

rundll32.exe

description	ioc	process
Key enumerated	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor	rundll32.exe
Key value enumerated	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\1	rundll32.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Platform ID	rundll32.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\VendorIdentifier	rundll32.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	rundll32.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor	rundll32.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\1\FeatureSet	rundll32.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\1\Previous Update Signature	rundll32.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Component Information	rundll32.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\FeatureSet	rundll32.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\1\Platform ID	rundll32.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\1	rundll32.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\1\Update Signature	rundll32.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier	rundll32.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Update Signature	rundll32.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Previous Update Signature	rundll32.exe
Key value enumerated	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	rundll32.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	rundll32.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\1\VendorIdentifier	rundll32.exe

Suspicious use of FindShellTrayWindow 1 IoCs

Processes:

rundll32.exe

pid process

1004 rundll32.exe

pid	process
1004	rundll32.exe

Suspicious use of WriteProcessMemory 12 IoCs

Processes:

rundll32.exerundll32.exe

description	pid	process	target process
PID 1352 wrote to memory of 1528	1352	rundll32.exe	rundll32.exe
PID 1352 wrote to memory of 1528	1352	rundll32.exe	rundll32.exe
PID 1352 wrote to memory of 1528	1352	rundll32.exe	rundll32.exe
PID 1352 wrote to memory of 1528	1352	rundll32.exe	rundll32.exe
PID 1352 wrote to memory of 1528	1352	rundll32.exe	rundll32.exe
PID 1352 wrote to memory of 1528	1352	rundll32.exe	rundll32.exe
PID 1352 wrote to memory of 1528	1352	rundll32.exe	rundll32.exe
PID 1528 wrote to memory of 1004	1528	rundll32.exe	rundll32.exe
PID 1528 wrote to memory of 1004	1528	rundll32.exe	rundll32.exe
PID 1528 wrote to memory of 1004	1528	rundll32.exe	rundll32.exe
PID 1528 wrote to memory of 1004	1528	rundll32.exe	rundll32.exe
PID 1528 wrote to memory of 1004	1528	rundll32.exe	rundll32.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\Serpodtudpwhhta.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:1352

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\Serpodtudpwhhta.dll,#1
2⤵
- Blocklisted process makes network request
- Suspicious use of SetThreadContext
- Checks processor information in registry
- Suspicious use of WriteProcessMemory
PID:1528

C:\Windows\system32\rundll32.exe
"C:\Windows\system32\rundll32.exe" "C:\Windows\system32\shell32.dll",#61 13731
3⤵
- Suspicious use of FindShellTrayWindow
PID:1004

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

2

T1082

Query Registry

1

T1012

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

memory/1004-67-0x0000000000270000-0x0000000000506000-memory.dmp

Filesize
2.6MB

Download
memory/1004-77-0x0000000002150000-0x00000000023F8000-memory.dmp

Filesize
2.7MB

Download
memory/1004-76-0x0000000000270000-0x0000000000506000-memory.dmp

Filesize
2.6MB

Download
memory/1004-75-0x000007FEFB5E1000-0x000007FEFB5E3000-memory.dmp

Filesize
8KB

Download
memory/1004-74-0x0000000001EE0000-0x0000000002020000-memory.dmp

Filesize
1.2MB

Download
memory/1004-73-0x0000000001EE0000-0x0000000002020000-memory.dmp

Filesize
1.2MB

Download
memory/1004-72-0x00000000FF5F3CEC-mapping.dmp

Download
memory/1528-59-0x0000000003340000-0x0000000003E8D000-memory.dmp

Filesize
11.3MB

Download
memory/1528-70-0x0000000003E90000-0x0000000003FD0000-memory.dmp

Filesize
1.2MB

Download
memory/1528-65-0x0000000003E90000-0x0000000003FD0000-memory.dmp

Filesize
1.2MB

Download
memory/1528-66-0x0000000003E90000-0x0000000003FD0000-memory.dmp

Filesize
1.2MB

Download
memory/1528-63-0x0000000003340000-0x0000000003E8D000-memory.dmp

Filesize
11.3MB

Download
memory/1528-69-0x0000000003E90000-0x0000000003FD0000-memory.dmp

Filesize
1.2MB

Download
memory/1528-71-0x0000000003E90000-0x0000000003FD0000-memory.dmp

Filesize
1.2MB

Download
memory/1528-64-0x0000000003E90000-0x0000000003FD0000-memory.dmp

Filesize
1.2MB

Download
memory/1528-62-0x0000000003340000-0x0000000003E8D000-memory.dmp

Filesize
11.3MB

Download
memory/1528-54-0x0000000000000000-mapping.dmp

Download
memory/1528-58-0x0000000001E80000-0x00000000022D7000-memory.dmp

Filesize
4.3MB

Download
memory/1528-57-0x0000000001E80000-0x00000000022D7000-memory.dmp

Filesize
4.3MB

Download
memory/1528-56-0x0000000001E80000-0x00000000022D7000-memory.dmp

Filesize
4.3MB

Download
memory/1528-55-0x0000000075B51000-0x0000000075B53000-memory.dmp

Filesize
8KB

Download
memory/1528-78-0x0000000003340000-0x0000000003E8D000-memory.dmp

Filesize
11.3MB

Download

Analysis

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