654d6cb94de6ecd5fbd28c0aa97c3b6f5e7816025a2ede4336e0cd81591562ae

General

Target

654d6cb94de6ecd5fbd28c0aa97c3b6f5e7816025a2ede4336e0cd81591562aeN.dll
Size

236KB
MD5

004123eafb9d331ac75cb40824a70630
SHA1

14cf4904b3d02e05c34ccc727406c0c6a82f7e7f
SHA256

654d6cb94de6ecd5fbd28c0aa97c3b6f5e7816025a2ede4336e0cd81591562ae
SHA512

256d4a7906a218604753556bffa9df170fcd80aee892bce7a8938486f81964a4abae5faefde60b3e71a570e900c9dbfa9af72943286e4073d1a13b4a24055e97
SSDEEP

1536:Iguo2K86vta10RJQYPIHL+D5IWhxRh/Ci4ucg3/+k5ltr+DRPG8Gz7wk+cQvMe:Go256vS0RJAL+lHPKi40+66iwkD0F

Score

10^/10

discovery persistence

Malware Config

Signatures

Adds autorun key to be loaded by Explorer.exe on startup 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\ShellServiceObjectDelayLoad	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\ShellServiceObjectDelayLoad\wsypz = "{00073af5-888f-ddd4-9990-888fb27da059}"	rundll32.exe

Loads dropped DLL 1 IoCs

pid	Process
1256	rundll32.exe

Drops file in System32 directory 4 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\rntku.dll	rundll32.exe
File opened for modification	C:\Windows\SysWOW64\rntku.dll	rundll32.exe
File created	C:\Windows\SysWOW64\jflcm.dll	rundll32.exe
File opened for modification	C:\Windows\SysWOW64\jflcm.dll	rundll32.exe

System Location Discovery: System Language Discovery 1 TTPs 1 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

Modifies registry class 5 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{00073af5-888f-ddd4-9990-888fb27da059}	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{00073af5-888f-ddd4-9990-888fb27da059}\	rundll32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{00073af5-888f-ddd4-9990-888fb27da059}\InprocServer32	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{00073af5-888f-ddd4-9990-888fb27da059}\InprocServer32\ = "C:\\Windows\\SysWow64\\rntku.dll"	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{00073af5-888f-ddd4-9990-888fb27da059}\InprocServer32\ThreadingModel = "Apartment"	rundll32.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
1256	rundll32.exe
1256	rundll32.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1256	rundll32.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1256	rundll32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 1056 wrote to memory of 1256	1056	rundll32.exe	28
PID 1056 wrote to memory of 1256	1056	rundll32.exe	28
PID 1056 wrote to memory of 1256	1056	rundll32.exe	28
PID 1056 wrote to memory of 1256	1056	rundll32.exe	28
PID 1056 wrote to memory of 1256	1056	rundll32.exe	28
PID 1056 wrote to memory of 1256	1056	rundll32.exe	28
PID 1056 wrote to memory of 1256	1056	rundll32.exe	28

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\654d6cb94de6ecd5fbd28c0aa97c3b6f5e7816025a2ede4336e0cd81591562aeN.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:1056
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\654d6cb94de6ecd5fbd28c0aa97c3b6f5e7816025a2ede4336e0cd81591562aeN.dll,#1
  2⤵
  - Adds autorun key to be loaded by Explorer.exe on startup
  - Loads dropped DLL
  - Drops file in System32 directory
  - System Location Discovery: System Language Discovery
  - Modifies registry class
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  PID:1256

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

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

\Windows\SysWOW64\jflcm.dll

Filesize
625KB

MD5
95e2376b3323f062eb562b8586d0f14a

SHA1
453d4c3bf4a489433b593420a37bbffb7749875a

SHA256
bd3fa8750123d00aa0967fba44372c46ea002681da9c9b77a4f9261553e26017

SHA512
b898603d07a49237e4dfc6872d5caa7616bae1258926f10e66c4d3f0d81cccefac1e844395b65bb1f308fbc022061b52e51f60658d0a546c04b365b3428cc87d

Download Submit
memory/1256-0-0x0000000000170000-0x00000000001B4000-memory.dmp

Filesize
272KB

Download
memory/1256-1-0x0000000000171000-0x0000000000178000-memory.dmp

Filesize
28KB

Download
memory/1256-10-0x0000000000170000-0x00000000001B4000-memory.dmp

Filesize
272KB

Download
memory/1256-7-0x0000000000170000-0x00000000001B4000-memory.dmp

Filesize
272KB

Download
memory/1256-11-0x0000000000170000-0x00000000001B4000-memory.dmp

Filesize
272KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads