640c11a93a93217299a32c20913b1a570df8f6cb3a17a7049f8f58913d4bb64f

Analysis

max time kernel
189s
max time network
89s
platform
windows7_x64
resource
win7-20221111-en
resource tags

arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
submitted
28/11/2022, 00:25

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General

Target

640c11a93a93217299a32c20913b1a570df8f6cb3a17a7049f8f58913d4bb64f.exe
Size

440KB
MD5

9d699c441d4bef45026dbd41dc8708a6
SHA1

e8eaaedb8893141933f1a5fbb408f6540481b903
SHA256

640c11a93a93217299a32c20913b1a570df8f6cb3a17a7049f8f58913d4bb64f
SHA512

e039fd15e6d91695cc4725d9c0dcb6acfd8d5175ec06cbab2924dbae5a411152f09a4e52404aa06d34b2cacdcc9d4c701915b7571e4e83990100b13fd54b7671
SSDEEP

12288:0LI97N4NY6YfXLcVEdpxeHwAiRzCMm/Sn:0LI97N4NY6eBpxeQAiQMm

Score

8^/10

evasion persistence

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
908	sys32.exe

Modifies Windows Firewall 1 TTPs 1 IoCs

evasion

Modify Existing Service

T1031

pid	Process
360	netsh.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-3406023954-474543476-3319432036-1000\Software\Microsoft\Windows\CurrentVersion\Run\e58d25491ede6e4712a12d9e905cf881 = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\sys32.exe\" .."	sys32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\e58d25491ede6e4712a12d9e905cf881 = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\sys32.exe\" .."	sys32.exe

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

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 16 IoCs

pid	Process
908	sys32.exe
908	sys32.exe
908	sys32.exe
908	sys32.exe
908	sys32.exe
908	sys32.exe
908	sys32.exe
908	sys32.exe
908	sys32.exe
908	sys32.exe
908	sys32.exe
908	sys32.exe
908	sys32.exe
908	sys32.exe
908	sys32.exe
908	sys32.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	908	sys32.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 1740 wrote to memory of 908	1740	640c11a93a93217299a32c20913b1a570df8f6cb3a17a7049f8f58913d4bb64f.exe	27
PID 1740 wrote to memory of 908	1740	640c11a93a93217299a32c20913b1a570df8f6cb3a17a7049f8f58913d4bb64f.exe	27
PID 1740 wrote to memory of 908	1740	640c11a93a93217299a32c20913b1a570df8f6cb3a17a7049f8f58913d4bb64f.exe	27
PID 908 wrote to memory of 360	908	sys32.exe	28
PID 908 wrote to memory of 360	908	sys32.exe	28
PID 908 wrote to memory of 360	908	sys32.exe	28

C:\Users\Admin\AppData\Local\Temp\640c11a93a93217299a32c20913b1a570df8f6cb3a17a7049f8f58913d4bb64f.exe
"C:\Users\Admin\AppData\Local\Temp\640c11a93a93217299a32c20913b1a570df8f6cb3a17a7049f8f58913d4bb64f.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:1740
- C:\Users\Admin\AppData\Local\Temp\sys32.exe
  "C:\Users\Admin\AppData\Local\Temp\sys32.exe"
  2⤵
  - Executes dropped EXE
  - Adds Run key to start application
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:908
- - C:\Windows\system32\netsh.exe
    netsh firewall add allowedprogram "C:\Users\Admin\AppData\Local\Temp\sys32.exe" "sys32.exe" ENABLE
    3⤵
    - Modifies Windows Firewall
    PID:360

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Modify Existing Service

T1031

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\sys32.exe

Filesize
440KB

MD5
9d699c441d4bef45026dbd41dc8708a6

SHA1
e8eaaedb8893141933f1a5fbb408f6540481b903

SHA256
640c11a93a93217299a32c20913b1a570df8f6cb3a17a7049f8f58913d4bb64f

SHA512
e039fd15e6d91695cc4725d9c0dcb6acfd8d5175ec06cbab2924dbae5a411152f09a4e52404aa06d34b2cacdcc9d4c701915b7571e4e83990100b13fd54b7671

Download Submit
C:\Users\Admin\AppData\Local\Temp\sys32.exe

Filesize
440KB

MD5
9d699c441d4bef45026dbd41dc8708a6

SHA1
e8eaaedb8893141933f1a5fbb408f6540481b903

SHA256
640c11a93a93217299a32c20913b1a570df8f6cb3a17a7049f8f58913d4bb64f

SHA512
e039fd15e6d91695cc4725d9c0dcb6acfd8d5175ec06cbab2924dbae5a411152f09a4e52404aa06d34b2cacdcc9d4c701915b7571e4e83990100b13fd54b7671

Download Submit
memory/908-63-0x000007FEF2240000-0x000007FEF32D6000-memory.dmp

Filesize
16.6MB

Download
memory/908-61-0x000007FEF3C60000-0x000007FEF4683000-memory.dmp

Filesize
10.1MB

Download
memory/908-62-0x000007FEF32E0000-0x000007FEF37A0000-memory.dmp

Filesize
4.8MB

Download
memory/908-66-0x0000000002037000-0x0000000002056000-memory.dmp

Filesize
124KB

Download
memory/908-67-0x0000000002037000-0x0000000002056000-memory.dmp

Filesize
124KB

Download
memory/1740-57-0x000007FEFBA21000-0x000007FEFBA23000-memory.dmp

Filesize
8KB

Download
memory/1740-56-0x000007FEF24C0000-0x000007FEF3556000-memory.dmp

Filesize
16.6MB

Download
memory/1740-54-0x000007FEF3C60000-0x000007FEF4683000-memory.dmp

Filesize
10.1MB

Download
memory/1740-55-0x000007FEF37A0000-0x000007FEF3C60000-memory.dmp

Filesize
4.8MB

Download