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

collection discovery spyware stealer

Malware Config

Signatures

Blocklisted process makes network request 2 IoCs

Processes:

rundll32.exe

flow pid process

5 4060 rundll32.exe
6 4060 rundll32.exe
Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials in Files
T1081

flow	pid	process
5	4060	rundll32.exe
6	4060	rundll32.exe

Accesses Microsoft Outlook accounts 1 TTPs 1 IoCs

collection

Email Collection

T1114

Processes:

rundll32.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Software\Microsoft\Office\Outlook\OMI Account Manager\Accounts	rundll32.exe

Accesses Microsoft Outlook profiles 1 TTPs 4 IoCs

collection

Email Collection

T1114

Processes:

rundll32.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	rundll32.exe
Key opened	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	rundll32.exe
Key opened	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	rundll32.exe
Key opened	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook	rundll32.exe

Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
discovery

Query Registry
T1012
Suspicious use of SetThreadContext 1 IoCs

Processes:

rundll32.exe

description pid process target process

PID 4060 set thread context of 4216 4060 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

description	pid	process	target process
PID 4060 set thread context of 4216	4060	rundll32.exe	rundll32.exe

Checks processor information in registry 2 TTPs 18 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 opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\1	rundll32.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Update Revision	rundll32.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Platform Specific Field 1	rundll32.exe
Key value enumerated	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	rundll32.exe
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\1\Update Revision	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\~MHz	rundll32.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	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\ProcessorNameString	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\0\Identifier	rundll32.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\VendorIdentifier	rundll32.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Previous Update Revision	rundll32.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Configuration Data	rundll32.exe

Modifies registry class 5 IoCs

Processes:

rundll32.exe

description	ioc	process
Key created	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU	rundll32.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\NodeSlots	rundll32.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\MRUListEx = ffffffff	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000_Classes\Local Settings	rundll32.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

rundll32.exe

pid process

4060 rundll32.exe
4060 rundll32.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

rundll32.exe

description pid process

Token: SeDebugPrivilege 4060 rundll32.exe
Suspicious use of FindShellTrayWindow 2 IoCs

Processes:

rundll32.exerundll32.exe

pid process

4216 rundll32.exe
4060 rundll32.exe

pid	process
4060	rundll32.exe
4060	rundll32.exe

description	pid	process
Token: SeDebugPrivilege	4060	rundll32.exe

pid	process
4216	rundll32.exe
4060	rundll32.exe

Suspicious use of WriteProcessMemory 12 IoCs

Processes:

rundll32.exerundll32.exe

description	pid	process	target process
PID 4832 wrote to memory of 4060	4832	rundll32.exe	rundll32.exe
PID 4832 wrote to memory of 4060	4832	rundll32.exe	rundll32.exe
PID 4832 wrote to memory of 4060	4832	rundll32.exe	rundll32.exe
PID 4060 wrote to memory of 4216	4060	rundll32.exe	rundll32.exe
PID 4060 wrote to memory of 4216	4060	rundll32.exe	rundll32.exe
PID 4060 wrote to memory of 4216	4060	rundll32.exe	rundll32.exe
PID 4060 wrote to memory of 3148	4060	rundll32.exe	schtasks.exe
PID 4060 wrote to memory of 3148	4060	rundll32.exe	schtasks.exe
PID 4060 wrote to memory of 3148	4060	rundll32.exe	schtasks.exe
PID 4060 wrote to memory of 4336	4060	rundll32.exe	schtasks.exe
PID 4060 wrote to memory of 4336	4060	rundll32.exe	schtasks.exe
PID 4060 wrote to memory of 4336	4060	rundll32.exe	schtasks.exe

outlook_office_path 1 IoCs

Processes:

rundll32.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	rundll32.exe

outlook_win_path 1 IoCs

Processes:

rundll32.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	rundll32.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\Serpodtudpwhhta.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:4832

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\Serpodtudpwhhta.dll,#1
2⤵
- Blocklisted process makes network request
- Accesses Microsoft Outlook accounts
- Accesses Microsoft Outlook profiles
- Suspicious use of SetThreadContext
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
- Suspicious use of WriteProcessMemory
- outlook_office_path
- outlook_win_path
PID:4060

C:\Windows\system32\rundll32.exe
"C:\Windows\system32\rundll32.exe" "C:\Windows\system32\shell32.dll",#61 13736
3⤵
- Modifies registry class
- Suspicious use of FindShellTrayWindow
PID:4216

C:\Windows\SysWOW64\schtasks.exe
schtasks /End /tn \Microsoft\Windows\Wininet\CacheTask
3⤵
PID:3148

C:\Windows\SysWOW64\schtasks.exe
schtasks /Run /tn \Microsoft\Windows\Wininet\CacheTask
3⤵
PID:4336

C:\Windows\System32\rundll32.exe
C:\Windows\System32\rundll32.exe C:\Windows\System32\shell32.dll,SHCreateLocalServerRunDll {9aa46009-3ce0-458a-a354-715610a075e6} -Embedding
1⤵
PID:4320

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Credentials in Files

1

T1081

Discovery

Query Registry

2

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Data from Local System

1

T1005

Email Collection

2

T1114

Exfiltration

Command and Control

Impact

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Downloads

memory/3148-152-0x0000000000000000-mapping.dmp

Download
memory/4060-145-0x0000000004960000-0x0000000004AA0000-memory.dmp

Filesize
1.2MB

Download
memory/4060-137-0x0000000000400000-0x0000000000857000-memory.dmp

Filesize
4.3MB

Download
memory/4060-144-0x0000000004960000-0x0000000004AA0000-memory.dmp

Filesize
1.2MB

Download
memory/4060-139-0x0000000003D50000-0x000000000489D000-memory.dmp

Filesize
11.3MB

Download
memory/4060-140-0x0000000003D50000-0x000000000489D000-memory.dmp

Filesize
11.3MB

Download
memory/4060-141-0x0000000004960000-0x0000000004AA0000-memory.dmp

Filesize
1.2MB

Download
memory/4060-142-0x0000000004960000-0x0000000004AA0000-memory.dmp

Filesize
1.2MB

Download
memory/4060-143-0x0000000004960000-0x0000000004AA0000-memory.dmp

Filesize
1.2MB

Download
memory/4060-138-0x0000000003D50000-0x000000000489D000-memory.dmp

Filesize
11.3MB

Download
memory/4060-135-0x0000000000000000-mapping.dmp

Download
memory/4060-153-0x0000000003D50000-0x000000000489D000-memory.dmp

Filesize
11.3MB

Download
memory/4060-146-0x0000000004960000-0x0000000004AA0000-memory.dmp

Filesize
1.2MB

Download
memory/4060-136-0x0000000000400000-0x0000000000857000-memory.dmp

Filesize
4.3MB

Download
memory/4216-149-0x000002BAEE3E0000-0x000002BAEE520000-memory.dmp

Filesize
1.2MB

Download
memory/4216-150-0x00000000005B0000-0x0000000000846000-memory.dmp

Filesize
2.6MB

Download
memory/4216-151-0x000002BAEC990000-0x000002BAECC38000-memory.dmp

Filesize
2.7MB

Download
memory/4216-148-0x000002BAEE3E0000-0x000002BAEE520000-memory.dmp

Filesize
1.2MB

Download
memory/4216-147-0x00007FF7F4786890-mapping.dmp

Download
memory/4336-154-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads