c41899315b2f3dad512ed1f58746e59fdb2f9717badcf7b2c861c1248d945991

Analysis

max time kernel
150s
max time network
155s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
22-11-2024 03:41

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General

Target

cd2d085998a289134ffaf27fbdcbc8cb_api-ms-win-system-dispex-l1-1-0.dll
Size

440KB
MD5

cd2d085998a289134ffaf27fbdcbc8cb
SHA1

e22678fe4bd0b209b14d5ed061ae61bb52e79df1
SHA256

0b12584302a5a72f467a08046814593ea505fa397785f1012ab973dd961a6c0e
SHA512

69c3ea1ff6c140ac4b21051bf0c0f3049750c31c0a1622ffa145daa1285b24678cd02d6bc89f85ecc5416b99ee99f42763a2d4e1d214c1d9d9e4acee834adc93
SSDEEP

6144:LDOrPcXOQeRKIawC7duJDaD0A9B5+9MRALsfwT4HZQO2f8etm:LqDQiF/Ad+9YzHZeZ

Score

8^/10

discovery spyware stealer

Malware Config

Signatures

Blocklisted process makes network request 1 IoCs

Processes:

rundll32.exe

flow	pid	Process
23	4564	rundll32.exe

Reads user/profile data of web browsers 3 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials In Files
T1552.001

Credentials from Web Browsers
T1555.003

Enumerates connected drives 3 TTPs 22 IoCs

Attempts to read the root path of hard drives other than the default C: drive.

Query Registry

T1012

Peripheral Device Discovery

T1120

System Information Discovery

T1082

Processes:

rundll32.exe

description	ioc	Process
File opened (read-only)	\??\M:	rundll32.exe
File opened (read-only)	\??\H:	rundll32.exe
File opened (read-only)	\??\E:	rundll32.exe
File opened (read-only)	\??\Z:	rundll32.exe
File opened (read-only)	\??\X:	rundll32.exe
File opened (read-only)	\??\T:	rundll32.exe
File opened (read-only)	\??\I:	rundll32.exe
File opened (read-only)	\??\V:	rundll32.exe
File opened (read-only)	\??\S:	rundll32.exe
File opened (read-only)	\??\R:	rundll32.exe
File opened (read-only)	\??\Q:	rundll32.exe
File opened (read-only)	\??\P:	rundll32.exe
File opened (read-only)	\??\L:	rundll32.exe
File opened (read-only)	\??\K:	rundll32.exe
File opened (read-only)	\??\J:	rundll32.exe
File opened (read-only)	\??\G:	rundll32.exe
File opened (read-only)	\??\Y:	rundll32.exe
File opened (read-only)	\??\W:	rundll32.exe
File opened (read-only)	\??\U:	rundll32.exe
File opened (read-only)	\??\O:	rundll32.exe
File opened (read-only)	\??\N:	rundll32.exe
File opened (read-only)	\??\B:	rundll32.exe

Drops file in Program Files directory 3 IoCs

Processes:

rundll32.exerundll32.exe

description	ioc	Process
File created	C:\PROGRA~3\RUNDLL32.EXE-3124.txt	rundll32.exe
File created	C:\PROGRA~3\RUNDLL32.EXE-4564.txt	rundll32.exe
File created	C:\PROGRA~3\C43EF3B2F87A.dat	rundll32.exe

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

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

Processes:

rundll32.exerundll32.exe

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	rundll32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	rundll32.exe

Checks processor information in registry 2 TTPs 6 IoCs

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

Query Registry

T1012

System Information Discovery

T1082

Processes:

rundll32.exerundll32.exe

description	ioc	Process
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	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\ProcessorNameString	rundll32.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	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\ProcessorNameString	rundll32.exe

Enumerates system info in registry 2 TTPs 6 IoCs

Query Registry

T1012

System Information Discovery

T1082

Processes:

rundll32.exerundll32.exe

description	ioc	Process
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS	rundll32.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\BIOSVendor	rundll32.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\Identifier	rundll32.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS	rundll32.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\BIOSVendor	rundll32.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\Identifier	rundll32.exe

Suspicious use of WriteProcessMemory 6 IoCs

Processes:

rundll32.exerundll32.exe

description	pid	Process	procid_target
PID 4960 wrote to memory of 3124	4960	rundll32.exe	83
PID 4960 wrote to memory of 3124	4960	rundll32.exe	83
PID 4960 wrote to memory of 3124	4960	rundll32.exe	83
PID 3124 wrote to memory of 4564	3124	rundll32.exe	84
PID 3124 wrote to memory of 4564	3124	rundll32.exe	84
PID 3124 wrote to memory of 4564	3124	rundll32.exe	84

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\cd2d085998a289134ffaf27fbdcbc8cb_api-ms-win-system-dispex-l1-1-0.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:4960
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\cd2d085998a289134ffaf27fbdcbc8cb_api-ms-win-system-dispex-l1-1-0.dll,#1
  2⤵
  - Drops file in Program Files directory
  - System Location Discovery: System Language Discovery
  - Checks processor information in registry
  - Enumerates system info in registry
  - Suspicious use of WriteProcessMemory
  PID:3124
- - C:\Windows\SysWOW64\rundll32.exe
    C:\Windows\\system32\rundll32.exe C:\Users\Admin\AppData\Local\Temp\cd2d085998a289134ffaf27fbdcbc8cb_api-ms-win-system-dispex-l1-1-0.dll,AccessToken
    3⤵
    - Blocklisted process makes network request
    - Enumerates connected drives
    - Drops file in Program Files directory
    - System Location Discovery: System Language Discovery
    - Checks processor information in registry
    - Enumerates system info in registry
    PID:4564

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Credentials from Password Stores

T1555

Credentials from Web Browsers

T1555.003

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Discovery

Peripheral Device Discovery

T1120

Query Registry

T1012

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/3124-0-0x0000000001500000-0x0000000001501000-memory.dmp

Filesize
4KB

Download
memory/3124-1-0x000000000B000000-0x000000000B06E000-memory.dmp

Filesize
440KB

Download
memory/4564-14-0x000000000B000000-0x000000000B06E000-memory.dmp

Filesize
440KB

Download
memory/4564-15-0x000000000B000000-0x000000000B06E000-memory.dmp

Filesize
440KB

Download
memory/4564-16-0x000000000B000000-0x000000000B06E000-memory.dmp

Filesize
440KB

Download
memory/4564-17-0x000000000B000000-0x000000000B06E000-memory.dmp

Filesize
440KB

Download