e721d8a1b8059c686d32d287017c9a2168bf6c841a1bc19083bd32c96a31f8f5

General

Target

e721d8a1b8059c686d32d287017c9a2168bf6c841a1bc19083bd32c96a31f8f5.exe
Size

255KB
MD5

b3b0d64457149bd4c24bcc5c1c92276a
SHA1

f7e0e8ff6d398bfa0f53ac3759c8a92e085512dc
SHA256

e721d8a1b8059c686d32d287017c9a2168bf6c841a1bc19083bd32c96a31f8f5
SHA512

9b7b764e0f2b3505bef67b73ca03a55d0c73d21850313c298911a201512e5292814bd6046bc046f5dec3989b626ee67b4b199a79c8164080fdff37d22bafe70a
SSDEEP

6144:SdjTng3fsDZ9u/86if9t0+lkU4f3X0SijE/f:wnKsnUM9t0QkU4fHqja

Score

8^/10

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
936	System.exe

Modifies Windows Firewall 1 TTPs 1 IoCs

evasion

Modify Existing Service

T1031

pid	Process
2004	netsh.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\301b5fcf8ce2fab8868e80b6c1f912fe.exe	System.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\301b5fcf8ce2fab8868e80b6c1f912fe.exe	System.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\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\301b5fcf8ce2fab8868e80b6c1f912fe = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\System.exe\" .."	System.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows\CurrentVersion\Run\301b5fcf8ce2fab8868e80b6c1f912fe = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\System.exe\" .."	System.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 18 IoCs

pid	Process
936	System.exe
936	System.exe
936	System.exe
936	System.exe
936	System.exe
936	System.exe
936	System.exe
936	System.exe
936	System.exe
936	System.exe
936	System.exe
936	System.exe
936	System.exe
936	System.exe
936	System.exe
936	System.exe
936	System.exe
936	System.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	936	System.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 2016 wrote to memory of 936	2016	e721d8a1b8059c686d32d287017c9a2168bf6c841a1bc19083bd32c96a31f8f5.exe	26
PID 2016 wrote to memory of 936	2016	e721d8a1b8059c686d32d287017c9a2168bf6c841a1bc19083bd32c96a31f8f5.exe	26
PID 2016 wrote to memory of 936	2016	e721d8a1b8059c686d32d287017c9a2168bf6c841a1bc19083bd32c96a31f8f5.exe	26
PID 936 wrote to memory of 2004	936	System.exe	27
PID 936 wrote to memory of 2004	936	System.exe	27
PID 936 wrote to memory of 2004	936	System.exe	27

C:\Users\Admin\AppData\Local\Temp\e721d8a1b8059c686d32d287017c9a2168bf6c841a1bc19083bd32c96a31f8f5.exe
"C:\Users\Admin\AppData\Local\Temp\e721d8a1b8059c686d32d287017c9a2168bf6c841a1bc19083bd32c96a31f8f5.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:2016
- C:\Users\Admin\AppData\Local\Temp\System.exe
  "C:\Users\Admin\AppData\Local\Temp\System.exe"
  2⤵
  - Executes dropped EXE
  - Drops startup file
  - Adds Run key to start application
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:936
- - C:\Windows\system32\netsh.exe
    netsh firewall add allowedprogram "C:\Users\Admin\AppData\Local\Temp\System.exe" "System.exe" ENABLE
    3⤵
    - Modifies Windows Firewall
    PID:2004

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Modify Existing Service

1

T1031

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

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

Filesize
255KB

MD5
b3b0d64457149bd4c24bcc5c1c92276a

SHA1
f7e0e8ff6d398bfa0f53ac3759c8a92e085512dc

SHA256
e721d8a1b8059c686d32d287017c9a2168bf6c841a1bc19083bd32c96a31f8f5

SHA512
9b7b764e0f2b3505bef67b73ca03a55d0c73d21850313c298911a201512e5292814bd6046bc046f5dec3989b626ee67b4b199a79c8164080fdff37d22bafe70a

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

Filesize
255KB

MD5
b3b0d64457149bd4c24bcc5c1c92276a

SHA1
f7e0e8ff6d398bfa0f53ac3759c8a92e085512dc

SHA256
e721d8a1b8059c686d32d287017c9a2168bf6c841a1bc19083bd32c96a31f8f5

SHA512
9b7b764e0f2b3505bef67b73ca03a55d0c73d21850313c298911a201512e5292814bd6046bc046f5dec3989b626ee67b4b199a79c8164080fdff37d22bafe70a

Download Submit
memory/936-63-0x000007FEF2E80000-0x000007FEF3F16000-memory.dmp

Filesize
16.6MB

Download
memory/936-61-0x000007FEF48A0000-0x000007FEF52C3000-memory.dmp

Filesize
10.1MB

Download
memory/936-62-0x000007FEF3F20000-0x000007FEF43E0000-memory.dmp

Filesize
4.8MB

Download
memory/936-66-0x0000000002257000-0x0000000002276000-memory.dmp

Filesize
124KB

Download
memory/936-67-0x0000000002257000-0x0000000002276000-memory.dmp

Filesize
124KB

Download
memory/2016-57-0x000007FEFC2F1000-0x000007FEFC2F3000-memory.dmp

Filesize
8KB

Download
memory/2016-56-0x000007FEF3340000-0x000007FEF43D6000-memory.dmp

Filesize
16.6MB

Download
memory/2016-55-0x000007FEF43E0000-0x000007FEF48A0000-memory.dmp

Filesize
4.8MB

Download
memory/2016-54-0x000007FEF48A0000-0x000007FEF52C3000-memory.dmp

Filesize
10.1MB

Download

Analysis

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