0874581959c4b1d7231290403331ef55354b5be28378f932ecb082b0f1539db7

General

Target

0874581959c4b1d7231290403331ef55354b5be28378f932ecb082b0f1539db7N.dll
Size

239KB
MD5

f2c95e9f9e440b3caf282609846a7880
SHA1

1e406ece0921643825fd7262e5f4da8bde1957cf
SHA256

0874581959c4b1d7231290403331ef55354b5be28378f932ecb082b0f1539db7
SHA512

5a165ce160c14dcb065d7e561d8c98258a0ba5c07aab46ae5bd3e32c21c9f29775cab341be11f6f683e9aea7fe2710aa1e3c7bce0223912e61f7e419d8cd251f
SSDEEP

3072:IxcV8j4Y1jkE6MYqA6lPgH23J6QrWk97I:58kOjkE6MYwPgW56UI

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
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\ShellServiceObjectDelayLoad\rkf = "{527db270-daf5-2f4a-eb06-daf53af860cf}"	rundll32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\ShellServiceObjectDelayLoad	rundll32.exe

Loads dropped DLL 2 IoCs

pid	Process
3044	rundll32.exe
3044	rundll32.exe

Drops file in System32 directory 4 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\exs.dll	rundll32.exe
File opened for modification	C:\Windows\SysWOW64\exs.dll	rundll32.exe
File created	C:\Windows\SysWOW64\qje.dll	rundll32.exe
File created	C:\Windows\SysWOW64\mfa.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\{527db270-daf5-2f4a-eb06-daf53af860cf}\InprocServer32	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{527db270-daf5-2f4a-eb06-daf53af860cf}\InprocServer32\ = "C:\\Windows\\SysWow64\\mfa.dll"	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{527db270-daf5-2f4a-eb06-daf53af860cf}\InprocServer32\ThreadingModel = "Apartment"	rundll32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{527db270-daf5-2f4a-eb06-daf53af860cf}	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{527db270-daf5-2f4a-eb06-daf53af860cf}\	rundll32.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
3044	rundll32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 3024 wrote to memory of 3044	3024	rundll32.exe	30
PID 3024 wrote to memory of 3044	3024	rundll32.exe	30
PID 3024 wrote to memory of 3044	3024	rundll32.exe	30
PID 3024 wrote to memory of 3044	3024	rundll32.exe	30
PID 3024 wrote to memory of 3044	3024	rundll32.exe	30
PID 3024 wrote to memory of 3044	3024	rundll32.exe	30
PID 3024 wrote to memory of 3044	3024	rundll32.exe	30

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\0874581959c4b1d7231290403331ef55354b5be28378f932ecb082b0f1539db7N.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:3024
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\0874581959c4b1d7231290403331ef55354b5be28378f932ecb082b0f1539db7N.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 use of SetWindowsHookEx
  PID:3044

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

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Downloads

\Windows\SysWOW64\exs.dll

Filesize
625KB

MD5
95e2376b3323f062eb562b8586d0f14a

SHA1
453d4c3bf4a489433b593420a37bbffb7749875a

SHA256
bd3fa8750123d00aa0967fba44372c46ea002681da9c9b77a4f9261553e26017

SHA512
b898603d07a49237e4dfc6872d5caa7616bae1258926f10e66c4d3f0d81cccefac1e844395b65bb1f308fbc022061b52e51f60658d0a546c04b365b3428cc87d

Download Submit
\Windows\SysWOW64\qje.dll

Filesize
1.1MB

MD5
9b98d47916ead4f69ef51b56b0c2323c

SHA1
290a80b4ded0efc0fd00816f373fcea81a521330

SHA256
96e0ae104c9662d0d20fdf59844c2d18334e5847b6c4fc7f8ce4b3b87f39887b

SHA512
68b67021f228d8d71df4deb0b6388558b2f935a6aa466a12199cd37ada47ee588ea407b278d190d3a498b0ef3f5f1a2573a469b7ea5561ab2e7055c45565fe94

Download Submit
memory/3044-0-0x0000000000200000-0x0000000000244000-memory.dmp

Filesize
272KB

Download
memory/3044-10-0x00000000750B5000-0x00000000750B6000-memory.dmp

Filesize
4KB

Download
memory/3044-11-0x00000000750A0000-0x00000000751B0000-memory.dmp

Filesize
1.1MB

Download
memory/3044-14-0x00000000750A0000-0x00000000751B0000-memory.dmp

Filesize
1.1MB

Download
memory/3044-13-0x0000000000200000-0x0000000000244000-memory.dmp

Filesize
272KB

Download
memory/3044-15-0x00000000750A0000-0x00000000751B0000-memory.dmp

Filesize
1.1MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads