a73c7109748231e8b5299b7f71f4f3df9d91e284a078cd66fd3de65a64c7382a

General

Target

a73c7109748231e8b5299b7f71f4f3df9d91e284a078cd66fd3de65a64c7382a.exe
Size

244KB
MD5

9276df420e6422f4489dd1404fe82921
SHA1

a118392762aa738abbfacc0c923af48a457cd881
SHA256

a73c7109748231e8b5299b7f71f4f3df9d91e284a078cd66fd3de65a64c7382a
SHA512

c260b5f77df747806cc7e507bb1660650e535bf87dcf6e3337341eeb0a5242c8b66f38d9a5ce9ed0a07520e4bcc40885f9a83e24348746f975a1a67a41dfac86
SSDEEP

6144:+0cN3KeKxnPXKV9XsWvw88XDJQ3f5vBWzG1Tk3h3gvgH1b:+083l6ybXt38cv31A3h3dHZ

Score

7^/10

Malware Config

Signatures

Loads dropped DLL 5 IoCs

pid	Process
1672	a73c7109748231e8b5299b7f71f4f3df9d91e284a078cd66fd3de65a64c7382a.exe
2036	rundll32.exe
2036	rundll32.exe
2036	rundll32.exe
2036	rundll32.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Windows\CurrentVersion\Run	a73c7109748231e8b5299b7f71f4f3df9d91e284a078cd66fd3de65a64c7382a.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Windows\CurrentVersion\Run\Metropolis = "rundll32.exe C:\\Windows\\system32\\sshnas21.dll,GetHandle"	a73c7109748231e8b5299b7f71f4f3df9d91e284a078cd66fd3de65a64c7382a.exe

Drops file in System32 directory 1 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\sshnas21.dll	a73c7109748231e8b5299b7f71f4f3df9d91e284a078cd66fd3de65a64c7382a.exe

Suspicious behavior: EnumeratesProcesses 27 IoCs

pid	Process
1672	a73c7109748231e8b5299b7f71f4f3df9d91e284a078cd66fd3de65a64c7382a.exe
1672	a73c7109748231e8b5299b7f71f4f3df9d91e284a078cd66fd3de65a64c7382a.exe
2036	rundll32.exe
2036	rundll32.exe
2036	rundll32.exe
2036	rundll32.exe
2036	rundll32.exe
2036	rundll32.exe
2036	rundll32.exe
2036	rundll32.exe
2036	rundll32.exe
2036	rundll32.exe
2036	rundll32.exe
2036	rundll32.exe
2036	rundll32.exe
2036	rundll32.exe
2036	rundll32.exe
2036	rundll32.exe
2036	rundll32.exe
2036	rundll32.exe
2036	rundll32.exe
2036	rundll32.exe
2036	rundll32.exe
2036	rundll32.exe
2036	rundll32.exe
2036	rundll32.exe
2036	rundll32.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1672	a73c7109748231e8b5299b7f71f4f3df9d91e284a078cd66fd3de65a64c7382a.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 1672 wrote to memory of 2036	1672	a73c7109748231e8b5299b7f71f4f3df9d91e284a078cd66fd3de65a64c7382a.exe	27
PID 1672 wrote to memory of 2036	1672	a73c7109748231e8b5299b7f71f4f3df9d91e284a078cd66fd3de65a64c7382a.exe	27
PID 1672 wrote to memory of 2036	1672	a73c7109748231e8b5299b7f71f4f3df9d91e284a078cd66fd3de65a64c7382a.exe	27
PID 1672 wrote to memory of 2036	1672	a73c7109748231e8b5299b7f71f4f3df9d91e284a078cd66fd3de65a64c7382a.exe	27
PID 1672 wrote to memory of 2036	1672	a73c7109748231e8b5299b7f71f4f3df9d91e284a078cd66fd3de65a64c7382a.exe	27
PID 1672 wrote to memory of 2036	1672	a73c7109748231e8b5299b7f71f4f3df9d91e284a078cd66fd3de65a64c7382a.exe	27
PID 1672 wrote to memory of 2036	1672	a73c7109748231e8b5299b7f71f4f3df9d91e284a078cd66fd3de65a64c7382a.exe	27

C:\Users\Admin\AppData\Local\Temp\a73c7109748231e8b5299b7f71f4f3df9d91e284a078cd66fd3de65a64c7382a.exe
"C:\Users\Admin\AppData\Local\Temp\a73c7109748231e8b5299b7f71f4f3df9d91e284a078cd66fd3de65a64c7382a.exe"
1⤵
- Loads dropped DLL
- Adds Run key to start application
- Drops file in System32 directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1672
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Windows\system32\sshnas21.dll,GetHandle
  2⤵
  - Loads dropped DLL
  - Suspicious behavior: EnumeratesProcesses
  PID:2036

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Windows\SysWOW64\sshnas21.dll

Filesize
533KB

MD5
f459ab29f59f51828e0880c1ffe7c7b9

SHA1
262bc768e5afc48bcad8357df3fb13d176d6f790

SHA256
3d57ca9bfb09d66e73ed2ebb646526233b3d14fb6c6b58fef17f553dad49602a

SHA512
b6565b9e902e8523175acf5a6d17da073d8a1197dfb001ec8143ed940fcdd4abd322b8a4a7cac9db082f4ce2d167b9cf80787669727ca28c748ed5d0db799097

Download Submit
\Windows\SysWOW64\sshnas21.dll

Filesize
533KB

MD5
f459ab29f59f51828e0880c1ffe7c7b9

SHA1
262bc768e5afc48bcad8357df3fb13d176d6f790

SHA256
3d57ca9bfb09d66e73ed2ebb646526233b3d14fb6c6b58fef17f553dad49602a

SHA512
b6565b9e902e8523175acf5a6d17da073d8a1197dfb001ec8143ed940fcdd4abd322b8a4a7cac9db082f4ce2d167b9cf80787669727ca28c748ed5d0db799097

Download Submit
\Windows\SysWOW64\sshnas21.dll

Filesize
533KB

MD5
f459ab29f59f51828e0880c1ffe7c7b9

SHA1
262bc768e5afc48bcad8357df3fb13d176d6f790

SHA256
3d57ca9bfb09d66e73ed2ebb646526233b3d14fb6c6b58fef17f553dad49602a

SHA512
b6565b9e902e8523175acf5a6d17da073d8a1197dfb001ec8143ed940fcdd4abd322b8a4a7cac9db082f4ce2d167b9cf80787669727ca28c748ed5d0db799097

Download Submit
\Windows\SysWOW64\sshnas21.dll

Filesize
533KB

MD5
f459ab29f59f51828e0880c1ffe7c7b9

SHA1
262bc768e5afc48bcad8357df3fb13d176d6f790

SHA256
3d57ca9bfb09d66e73ed2ebb646526233b3d14fb6c6b58fef17f553dad49602a

SHA512
b6565b9e902e8523175acf5a6d17da073d8a1197dfb001ec8143ed940fcdd4abd322b8a4a7cac9db082f4ce2d167b9cf80787669727ca28c748ed5d0db799097

Download Submit
\Windows\SysWOW64\sshnas21.dll

Filesize
533KB

MD5
f459ab29f59f51828e0880c1ffe7c7b9

SHA1
262bc768e5afc48bcad8357df3fb13d176d6f790

SHA256
3d57ca9bfb09d66e73ed2ebb646526233b3d14fb6c6b58fef17f553dad49602a

SHA512
b6565b9e902e8523175acf5a6d17da073d8a1197dfb001ec8143ed940fcdd4abd322b8a4a7cac9db082f4ce2d167b9cf80787669727ca28c748ed5d0db799097

Download Submit
\Windows\SysWOW64\sshnas21.dll

Filesize
533KB

MD5
f459ab29f59f51828e0880c1ffe7c7b9

SHA1
262bc768e5afc48bcad8357df3fb13d176d6f790

SHA256
3d57ca9bfb09d66e73ed2ebb646526233b3d14fb6c6b58fef17f553dad49602a

SHA512
b6565b9e902e8523175acf5a6d17da073d8a1197dfb001ec8143ed940fcdd4abd322b8a4a7cac9db082f4ce2d167b9cf80787669727ca28c748ed5d0db799097

Download Submit
memory/1672-57-0x0000000000400000-0x0000000000497000-memory.dmp

Filesize
604KB

Download
memory/1672-61-0x0000000000400000-0x0000000000497000-memory.dmp

Filesize
604KB

Download
memory/1672-59-0x0000000010000000-0x0000000010089000-memory.dmp

Filesize
548KB

Download
memory/1672-58-0x00000000003A0000-0x00000000003BF000-memory.dmp

Filesize
124KB

Download
memory/1672-54-0x0000000075BD1000-0x0000000075BD3000-memory.dmp

Filesize
8KB

Download
memory/1672-55-0x0000000000370000-0x000000000039C000-memory.dmp

Filesize
176KB

Download
memory/2036-68-0x0000000010000000-0x0000000010089000-memory.dmp

Filesize
548KB

Download
memory/2036-69-0x0000000010000000-0x0000000010089000-memory.dmp

Filesize
548KB

Download

Analysis

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