a1692cf310b05f76669c667bce25fde1fb2163cf8efd9d8b0965826d26cc756e

General

Target

a1692cf310b05f76669c667bce25fde1fb2163cf8efd9d8b0965826d26cc756e.exe
Size

117KB
MD5

81024ec0201ae32187528c5fd1551527
SHA1

2114393e74deda33d51e5a401423576994b025f6
SHA256

a1692cf310b05f76669c667bce25fde1fb2163cf8efd9d8b0965826d26cc756e
SHA512

5e3deb90123be277b7ed71fa5ba7beb620c1b9ccc5615a7902a198c2a968f7622267cc120e3b58bc42c21080077beb61aec06775700c7311c0365d7eb86322ca
SSDEEP

1536:FGu/RN+w5Af82nq4duIT4xbVIyzxozydiOTgU5wXjzuwpW:FvQ182nqiKVIyzxozydBZ5wTTpW

Score

8^/10

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
564	lsaass.exe

Modifies Windows Firewall 1 TTPs 1 IoCs

evasion

Modify Existing Service

T1031

pid	Process
340	netsh.exe

Loads dropped DLL 1 IoCs

pid	Process
1996	a1692cf310b05f76669c667bce25fde1fb2163cf8efd9d8b0965826d26cc756e.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\97a4e7818e83c650209a391580e60ff9 = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\lsaass.exe\" .."	lsaass.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\97a4e7818e83c650209a391580e60ff9 = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\lsaass.exe\" .."	lsaass.exe

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

System Information Discovery
T1082

Suspicious use of AdjustPrivilegeToken 15 IoCs

description	pid	Process
Token: SeDebugPrivilege	564	lsaass.exe
Token: 33	564	lsaass.exe
Token: SeIncBasePriorityPrivilege	564	lsaass.exe
Token: 33	564	lsaass.exe
Token: SeIncBasePriorityPrivilege	564	lsaass.exe
Token: 33	564	lsaass.exe
Token: SeIncBasePriorityPrivilege	564	lsaass.exe
Token: 33	564	lsaass.exe
Token: SeIncBasePriorityPrivilege	564	lsaass.exe
Token: 33	564	lsaass.exe
Token: SeIncBasePriorityPrivilege	564	lsaass.exe
Token: 33	564	lsaass.exe
Token: SeIncBasePriorityPrivilege	564	lsaass.exe
Token: 33	564	lsaass.exe
Token: SeIncBasePriorityPrivilege	564	lsaass.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 1996 wrote to memory of 564	1996	a1692cf310b05f76669c667bce25fde1fb2163cf8efd9d8b0965826d26cc756e.exe	28
PID 1996 wrote to memory of 564	1996	a1692cf310b05f76669c667bce25fde1fb2163cf8efd9d8b0965826d26cc756e.exe	28
PID 1996 wrote to memory of 564	1996	a1692cf310b05f76669c667bce25fde1fb2163cf8efd9d8b0965826d26cc756e.exe	28
PID 1996 wrote to memory of 564	1996	a1692cf310b05f76669c667bce25fde1fb2163cf8efd9d8b0965826d26cc756e.exe	28
PID 564 wrote to memory of 340	564	lsaass.exe	29
PID 564 wrote to memory of 340	564	lsaass.exe	29
PID 564 wrote to memory of 340	564	lsaass.exe	29
PID 564 wrote to memory of 340	564	lsaass.exe	29

C:\Users\Admin\AppData\Local\Temp\a1692cf310b05f76669c667bce25fde1fb2163cf8efd9d8b0965826d26cc756e.exe
"C:\Users\Admin\AppData\Local\Temp\a1692cf310b05f76669c667bce25fde1fb2163cf8efd9d8b0965826d26cc756e.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1996
- C:\Users\Admin\AppData\Local\Temp\lsaass.exe
  "C:\Users\Admin\AppData\Local\Temp\lsaass.exe"
  2⤵
  - Executes dropped EXE
  - Adds Run key to start application
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:564
- - C:\Windows\SysWOW64\netsh.exe
    netsh firewall add allowedprogram "C:\Users\Admin\AppData\Local\Temp\lsaass.exe" "lsaass.exe" ENABLE
    3⤵
    - Modifies Windows Firewall
    PID:340

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

Loading Replay Monitor...

Downloads

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

Filesize
117KB

MD5
81024ec0201ae32187528c5fd1551527

SHA1
2114393e74deda33d51e5a401423576994b025f6

SHA256
a1692cf310b05f76669c667bce25fde1fb2163cf8efd9d8b0965826d26cc756e

SHA512
5e3deb90123be277b7ed71fa5ba7beb620c1b9ccc5615a7902a198c2a968f7622267cc120e3b58bc42c21080077beb61aec06775700c7311c0365d7eb86322ca

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

Filesize
117KB

MD5
81024ec0201ae32187528c5fd1551527

SHA1
2114393e74deda33d51e5a401423576994b025f6

SHA256
a1692cf310b05f76669c667bce25fde1fb2163cf8efd9d8b0965826d26cc756e

SHA512
5e3deb90123be277b7ed71fa5ba7beb620c1b9ccc5615a7902a198c2a968f7622267cc120e3b58bc42c21080077beb61aec06775700c7311c0365d7eb86322ca

Download Submit
\Users\Admin\AppData\Local\Temp\lsaass.exe

Filesize
117KB

MD5
81024ec0201ae32187528c5fd1551527

SHA1
2114393e74deda33d51e5a401423576994b025f6

SHA256
a1692cf310b05f76669c667bce25fde1fb2163cf8efd9d8b0965826d26cc756e

SHA512
5e3deb90123be277b7ed71fa5ba7beb620c1b9ccc5615a7902a198c2a968f7622267cc120e3b58bc42c21080077beb61aec06775700c7311c0365d7eb86322ca

Download Submit
memory/564-63-0x0000000074B80000-0x000000007512B000-memory.dmp

Filesize
5.7MB

Download
memory/564-66-0x0000000074B80000-0x000000007512B000-memory.dmp

Filesize
5.7MB

Download
memory/1996-54-0x0000000075631000-0x0000000075633000-memory.dmp

Filesize
8KB

Download
memory/1996-55-0x0000000074B80000-0x000000007512B000-memory.dmp

Filesize
5.7MB

Download
memory/1996-56-0x0000000074B80000-0x000000007512B000-memory.dmp

Filesize
5.7MB

Download
memory/1996-62-0x0000000074B80000-0x000000007512B000-memory.dmp

Filesize
5.7MB

Download

Analysis

Sharing