ef33d38d61e0a474144d0c65d9c195fdcfd1cf755f3d8adc35b0ca665e247cef

General

Target

ef33d38d61e0a474144d0c65d9c195fdcfd1cf755f3d8adc35b0ca665e247cef.exe
Size

3.7MB
MD5

17408d6bc2746fd8fdb3cd050c02530e
SHA1

d6141b60c37d6c20914d397f1ff38ea1b163a312
SHA256

ef33d38d61e0a474144d0c65d9c195fdcfd1cf755f3d8adc35b0ca665e247cef
SHA512

e9d3d988892f82b308f9c70936852f27c313aacde9c82798527933ee6a38ea5b51455598d49d144a6d521bae0d06c848cf2293b5c7073b42fc6faed3bf9668d0
SSDEEP

98304:18Sp9eQ3km1fDiOlJv4cN+BZh6MAfu+2TaKobC:18SLeQ3kmctcG9aKo

Score

8^/10

collection discovery spyware stealer

Malware Config

Signatures

Blocklisted process makes network request 1 IoCs

Processes:

rundll32.exe

flow pid process

35 2544 rundll32.exe
Loads dropped DLL 1 IoCs

Processes:

rundll32.exe

pid process

2544 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
35	2544	rundll32.exe

pid	process
2544	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-1-5-21-2891029575-1462575-1165213807-1000\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-1-5-21-2891029575-1462575-1165213807-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	rundll32.exe
Key opened	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	rundll32.exe
Key opened	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook	rundll32.exe
Key opened	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	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 2544 set thread context of 5080 2544 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
Program crash 1 IoCs

Processes:

WerFault.exe

pid pid_target process target process

1968 1060 WerFault.exe ef33d38d61e0a474144d0c65d9c195fdcfd1cf755f3d8adc35b0ca665e247cef.exe

description	pid	process	target process
PID 2544 set thread context of 5080	2544	rundll32.exe	rundll32.exe

pid	pid_target	process	target process
1968	1060	WerFault.exe	ef33d38d61e0a474144d0c65d9c195fdcfd1cf755f3d8adc35b0ca665e247cef.exe

Checks processor information in registry 2 TTPs 24 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 value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Component Information	rundll32.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\1\Update Status	rundll32.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\1	rundll32.exe
Key value enumerated	\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\Previous Update Revision	rundll32.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier	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\Update Status	rundll32.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Platform Specific Field 1	rundll32.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	rundll32.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\1\Configuration Data	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\1\VendorIdentifier	rundll32.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	rundll32.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Configuration Data	rundll32.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\1\Previous Update Revision	rundll32.exe
Key value enumerated	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\1	rundll32.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\VendorIdentifier	rundll32.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\1\ProcessorNameString	rundll32.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	rundll32.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\1\FeatureSet	rundll32.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\FeatureSet	rundll32.exe
Key enumerated	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor	rundll32.exe

Modifies registry class 5 IoCs

Processes:

rundll32.exe

description	ioc	process
Key created	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU	rundll32.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\NodeSlots	rundll32.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\MRUListEx = ffffffff	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000_Classes\Local Settings	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell	rundll32.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

rundll32.exe

pid process

2544 rundll32.exe
2544 rundll32.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

rundll32.exe

description pid process

Token: SeDebugPrivilege 2544 rundll32.exe
Suspicious use of FindShellTrayWindow 2 IoCs

Processes:

rundll32.exerundll32.exe

pid process

5080 rundll32.exe
2544 rundll32.exe

pid	process
2544	rundll32.exe
2544	rundll32.exe

description	pid	process
Token: SeDebugPrivilege	2544	rundll32.exe

pid	process
5080	rundll32.exe
2544	rundll32.exe

Suspicious use of WriteProcessMemory 12 IoCs

Processes:

ef33d38d61e0a474144d0c65d9c195fdcfd1cf755f3d8adc35b0ca665e247cef.exerundll32.exe

description	pid	process	target process
PID 1060 wrote to memory of 2544	1060	ef33d38d61e0a474144d0c65d9c195fdcfd1cf755f3d8adc35b0ca665e247cef.exe	rundll32.exe
PID 1060 wrote to memory of 2544	1060	ef33d38d61e0a474144d0c65d9c195fdcfd1cf755f3d8adc35b0ca665e247cef.exe	rundll32.exe
PID 1060 wrote to memory of 2544	1060	ef33d38d61e0a474144d0c65d9c195fdcfd1cf755f3d8adc35b0ca665e247cef.exe	rundll32.exe
PID 2544 wrote to memory of 5080	2544	rundll32.exe	rundll32.exe
PID 2544 wrote to memory of 5080	2544	rundll32.exe	rundll32.exe
PID 2544 wrote to memory of 5080	2544	rundll32.exe	rundll32.exe
PID 2544 wrote to memory of 4516	2544	rundll32.exe	schtasks.exe
PID 2544 wrote to memory of 4516	2544	rundll32.exe	schtasks.exe
PID 2544 wrote to memory of 4516	2544	rundll32.exe	schtasks.exe
PID 2544 wrote to memory of 3940	2544	rundll32.exe	schtasks.exe
PID 2544 wrote to memory of 3940	2544	rundll32.exe	schtasks.exe
PID 2544 wrote to memory of 3940	2544	rundll32.exe	schtasks.exe

outlook_office_path 1 IoCs

Processes:

rundll32.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\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-1-5-21-2891029575-1462575-1165213807-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	rundll32.exe

C:\Users\Admin\AppData\Local\Temp\ef33d38d61e0a474144d0c65d9c195fdcfd1cf755f3d8adc35b0ca665e247cef.exe
"C:\Users\Admin\AppData\Local\Temp\ef33d38d61e0a474144d0c65d9c195fdcfd1cf755f3d8adc35b0ca665e247cef.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:1060
- C:\Windows\SysWOW64\rundll32.exe
  C:\Windows\system32\rundll32.exe C:\Users\Admin\AppData\Local\Temp\Weheooup.dll,start
  2⤵
  - Blocklisted process makes network request
  - Loads dropped DLL
  - 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:2544
- - C:\Windows\system32\rundll32.exe
    "C:\Windows\system32\rundll32.exe" "C:\Windows\system32\shell32.dll",#61 24176
    3⤵
    - Modifies registry class
    - Suspicious use of FindShellTrayWindow
    PID:5080
- - C:\Windows\SysWOW64\schtasks.exe
    schtasks /End /tn \Microsoft\Windows\Wininet\CacheTask
    3⤵
    PID:4516
- - C:\Windows\SysWOW64\schtasks.exe
    schtasks /Run /tn \Microsoft\Windows\Wininet\CacheTask
    3⤵
    PID:3940
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1060 -s 480
  2⤵
  - Program crash
  PID:1968

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 456 -p 1060 -ip 1060
1⤵
PID:4340

C:\Windows\System32\rundll32.exe
C:\Windows\System32\rundll32.exe C:\Windows\System32\shell32.dll,SHCreateLocalServerRunDll {9aa46009-3ce0-458a-a354-715610a075e6} -Embedding
1⤵
PID:2356

Network

MITRE ATT&CK Enterprise 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

Email Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\Weheooup.dll

Filesize
4.2MB

MD5
dd5eda0e0004f7048612774f7deef2e5

SHA1
338220cf60bc4d4babaed7207a5c8596560df70e

SHA256
a7260cc541752ddf59d39301b4007e3b9332324d9f3991fac716a723713d0876

SHA512
afee9a292fc9ee0deb6f4d3e3657d1ee0ec9bea9757a9bd3ccb6f716cf98cb47ef81c90c2339e1f095edac32296d5c0bafec7565c9d5654d60709512cd934fcd

Download Submit
C:\Users\Admin\AppData\Local\Temp\Weheooup.dll

Filesize
4.2MB

MD5
dd5eda0e0004f7048612774f7deef2e5

SHA1
338220cf60bc4d4babaed7207a5c8596560df70e

SHA256
a7260cc541752ddf59d39301b4007e3b9332324d9f3991fac716a723713d0876

SHA512
afee9a292fc9ee0deb6f4d3e3657d1ee0ec9bea9757a9bd3ccb6f716cf98cb47ef81c90c2339e1f095edac32296d5c0bafec7565c9d5654d60709512cd934fcd

Download Submit
memory/1060-141-0x0000000000400000-0x00000000008EE000-memory.dmp

Filesize
4.9MB

Download
memory/1060-133-0x0000000002B70000-0x0000000003052000-memory.dmp

Filesize
4.9MB

Download
memory/1060-134-0x0000000000400000-0x00000000008EE000-memory.dmp

Filesize
4.9MB

Download
memory/1060-135-0x0000000002B70000-0x0000000003052000-memory.dmp

Filesize
4.9MB

Download
memory/1060-136-0x0000000000400000-0x00000000008EE000-memory.dmp

Filesize
4.9MB

Download
memory/1060-132-0x00000000027E1000-0x0000000002B62000-memory.dmp

Filesize
3.5MB

Download
memory/2544-146-0x0000000004710000-0x0000000004850000-memory.dmp

Filesize
1.2MB

Download
memory/2544-149-0x0000000004710000-0x0000000004850000-memory.dmp

Filesize
1.2MB

Download
memory/2544-142-0x0000000000400000-0x000000000084D000-memory.dmp

Filesize
4.3MB

Download
memory/2544-143-0x0000000003AD0000-0x0000000004641000-memory.dmp

Filesize
11.4MB

Download
memory/2544-144-0x0000000003AD0000-0x0000000004641000-memory.dmp

Filesize
11.4MB

Download
memory/2544-145-0x0000000003AD0000-0x0000000004641000-memory.dmp

Filesize
11.4MB

Download
memory/2544-137-0x0000000000000000-mapping.dmp

Download
memory/2544-147-0x0000000004710000-0x0000000004850000-memory.dmp

Filesize
1.2MB

Download
memory/2544-148-0x0000000004710000-0x0000000004850000-memory.dmp

Filesize
1.2MB

Download
memory/2544-140-0x0000000000400000-0x000000000084D000-memory.dmp

Filesize
4.3MB

Download
memory/2544-150-0x0000000004710000-0x0000000004850000-memory.dmp

Filesize
1.2MB

Download
memory/2544-151-0x0000000004710000-0x0000000004850000-memory.dmp

Filesize
1.2MB

Download
memory/2544-157-0x0000000003AD0000-0x0000000004641000-memory.dmp

Filesize
11.4MB

Download
memory/3940-159-0x0000000000000000-mapping.dmp

Download
memory/4516-158-0x0000000000000000-mapping.dmp

Download
memory/5080-153-0x000002218BE80000-0x000002218BFC0000-memory.dmp

Filesize
1.2MB

Download
memory/5080-154-0x000002218BE80000-0x000002218BFC0000-memory.dmp

Filesize
1.2MB

Download
memory/5080-155-0x00000000000C0000-0x000000000035B000-memory.dmp

Filesize
2.6MB

Download
memory/5080-156-0x000002218A430000-0x000002218A6DC000-memory.dmp

Filesize
2.7MB

Download
memory/5080-152-0x00007FF711936890-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads