591d75a0420fbe7b7b0ada87a5c554aff2ad1dea3b480e12bc5569eb8eb52430

General

Target

591d75a0420fbe7b7b0ada87a5c554aff2ad1dea3b480e12bc5569eb8eb52430N.dll
Size

124KB
MD5

e89e11914efca2e1756baa88f275b890
SHA1

d4a438d8d6a7a2cf2a1843c9cf253c4b633e0984
SHA256

591d75a0420fbe7b7b0ada87a5c554aff2ad1dea3b480e12bc5569eb8eb52430
SHA512

c7c25d72c17cc3328685685c7ad4e38a8743edf240dd763127b4376f03acbd20e23e53b1d7f71ea1422cfe8ffa927f974543fecd698faf020e8baffdc799451b
SSDEEP

3072:idlEhjJ79Dapzpv7iaoPuFu65hdmL5X9Uri2:KCaR7iajXHd0th2

Score

7^/10

Malware Config

Signatures

Loads dropped DLL 4 IoCs

pid	Process
1804	rundll32.exe
1804	rundll32.exe
1804	rundll32.exe
1804	rundll32.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-457978338-2990298471-2379561640-1000\Software\Microsoft\Windows\CurrentVersion\Run\{4E96174D-4D93-4A4B-B942-70B518DFB1E9} = "rundll32 \"C:\\Users\\Admin\\AppData\\Local\\Temp\\{4E96174D-4D93-4A4B-B942-70B518DFB1E9}\\18f2.dll\",DllGetClassObject secret 23335"	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

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 4 IoCs

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

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	rundll32.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	rundll32.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	rundll32.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	rundll32.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2096	rundll32.exe
1804	rundll32.exe

Suspicious use of WriteProcessMemory 14 IoCs

description	pid	Process	procid_target
PID 2052 wrote to memory of 2096	2052	rundll32.exe	29
PID 2052 wrote to memory of 2096	2052	rundll32.exe	29
PID 2052 wrote to memory of 2096	2052	rundll32.exe	29
PID 2052 wrote to memory of 2096	2052	rundll32.exe	29
PID 2052 wrote to memory of 2096	2052	rundll32.exe	29
PID 2052 wrote to memory of 2096	2052	rundll32.exe	29
PID 2052 wrote to memory of 2096	2052	rundll32.exe	29
PID 2096 wrote to memory of 1804	2096	rundll32.exe	30
PID 2096 wrote to memory of 1804	2096	rundll32.exe	30
PID 2096 wrote to memory of 1804	2096	rundll32.exe	30
PID 2096 wrote to memory of 1804	2096	rundll32.exe	30
PID 2096 wrote to memory of 1804	2096	rundll32.exe	30
PID 2096 wrote to memory of 1804	2096	rundll32.exe	30
PID 2096 wrote to memory of 1804	2096	rundll32.exe	30

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\591d75a0420fbe7b7b0ada87a5c554aff2ad1dea3b480e12bc5569eb8eb52430N.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:2052
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\591d75a0420fbe7b7b0ada87a5c554aff2ad1dea3b480e12bc5569eb8eb52430N.dll,#1
  2⤵
  - Adds Run key to start application
  - System Location Discovery: System Language Discovery
  - Checks processor information in registry
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:2096
- - C:\Windows\SysWOW64\rundll32.exe
    "C:\Windows\System32\rundll32.exe" "C:\Users\Admin\AppData\Local\Temp\{4E96174D-4D93-4A4B-B942-70B518DFB1E9}\18f2.dll",DllGetClassObject secret 23335
    3⤵
    - Loads dropped DLL
    - System Location Discovery: System Language Discovery
    - Checks processor information in registry
    - Suspicious behavior: EnumeratesProcesses
    PID:1804

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

\Users\Admin\AppData\Local\Temp\{4E96174D-4D93-4A4B-B942-70B518DFB1E9}\18f2.dll

Filesize
124KB

MD5
e89e11914efca2e1756baa88f275b890

SHA1
d4a438d8d6a7a2cf2a1843c9cf253c4b633e0984

SHA256
591d75a0420fbe7b7b0ada87a5c554aff2ad1dea3b480e12bc5569eb8eb52430

SHA512
c7c25d72c17cc3328685685c7ad4e38a8743edf240dd763127b4376f03acbd20e23e53b1d7f71ea1422cfe8ffa927f974543fecd698faf020e8baffdc799451b

Download Submit
memory/1804-9-0x0000000074B00000-0x0000000074B28000-memory.dmp

Filesize
160KB

Download
memory/1804-11-0x0000000000920000-0x0000000000A20000-memory.dmp

Filesize
1024KB

Download
memory/1804-13-0x0000000074B00000-0x0000000074B28000-memory.dmp

Filesize
160KB

Download
memory/2096-0-0x0000000074F10000-0x0000000074F38000-memory.dmp

Filesize
160KB

Download
memory/2096-2-0x0000000000810000-0x0000000000910000-memory.dmp

Filesize
1024KB

Download
memory/2096-12-0x0000000074F10000-0x0000000074F38000-memory.dmp

Filesize
160KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads