b077b323bb0c5955af06b6e0c93ba36e489d6b0a8de9e2fc9c55fdb84550a883

General

Target

b077b323bb0c5955af06b6e0c93ba36e489d6b0a8de9e2fc9c55fdb84550a883.exe
Size

44KB
MD5

3f70190e86fa3aef81768e5fd9dd862c
SHA1

8ad173aa4baf18d7b86d8f4e160d29a4baa73810
SHA256

b077b323bb0c5955af06b6e0c93ba36e489d6b0a8de9e2fc9c55fdb84550a883
SHA512

47f6417b26ffd92d44ee52e0c82f282bbc160a046fff053b7fa44154c1ded0cae13ae975988589597893c87652613594dfc6c9308925430e62314491e4bb29c7
SSDEEP

768:gqJxn8eXSZ9Ss0JLIbuxln62gb58126HAjHtU2qvtO1a58t1tRONToj0Enjd76RL:d9lXdHQmaLLONEnjF64

Score

8^/10

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
792	chrome.exe

Modifies Windows Firewall 1 TTPs 1 IoCs

evasion

Modify Existing Service

T1031

pid	Process
1576	netsh.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\d5a38e9b5f206c41f8851bf04a251d26.exe	chrome.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\d5a38e9b5f206c41f8851bf04a251d26.exe	chrome.exe

Loads dropped DLL 1 IoCs

pid	Process
1476	b077b323bb0c5955af06b6e0c93ba36e489d6b0a8de9e2fc9c55fdb84550a883.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-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Windows\CurrentVersion\Run\d5a38e9b5f206c41f8851bf04a251d26 = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\chrome.exe\" .."	chrome.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\d5a38e9b5f206c41f8851bf04a251d26 = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\chrome.exe\" .."	chrome.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 2 IoCs

pid	Process
792	chrome.exe
792	chrome.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	792	chrome.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 1476 wrote to memory of 792	1476	b077b323bb0c5955af06b6e0c93ba36e489d6b0a8de9e2fc9c55fdb84550a883.exe	27
PID 1476 wrote to memory of 792	1476	b077b323bb0c5955af06b6e0c93ba36e489d6b0a8de9e2fc9c55fdb84550a883.exe	27
PID 1476 wrote to memory of 792	1476	b077b323bb0c5955af06b6e0c93ba36e489d6b0a8de9e2fc9c55fdb84550a883.exe	27
PID 1476 wrote to memory of 792	1476	b077b323bb0c5955af06b6e0c93ba36e489d6b0a8de9e2fc9c55fdb84550a883.exe	27
PID 792 wrote to memory of 1576	792	chrome.exe	28
PID 792 wrote to memory of 1576	792	chrome.exe	28
PID 792 wrote to memory of 1576	792	chrome.exe	28
PID 792 wrote to memory of 1576	792	chrome.exe	28

C:\Users\Admin\AppData\Local\Temp\b077b323bb0c5955af06b6e0c93ba36e489d6b0a8de9e2fc9c55fdb84550a883.exe
"C:\Users\Admin\AppData\Local\Temp\b077b323bb0c5955af06b6e0c93ba36e489d6b0a8de9e2fc9c55fdb84550a883.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1476
- C:\Users\Admin\AppData\Local\Temp\chrome.exe
  "C:\Users\Admin\AppData\Local\Temp\chrome.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:792
- - C:\Windows\SysWOW64\netsh.exe
    netsh firewall add allowedprogram "C:\Users\Admin\AppData\Local\Temp\chrome.exe" "chrome.exe" ENABLE
    3⤵
    - Modifies Windows Firewall
    PID:1576

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\chrome.exe

Filesize
44KB

MD5
3f70190e86fa3aef81768e5fd9dd862c

SHA1
8ad173aa4baf18d7b86d8f4e160d29a4baa73810

SHA256
b077b323bb0c5955af06b6e0c93ba36e489d6b0a8de9e2fc9c55fdb84550a883

SHA512
47f6417b26ffd92d44ee52e0c82f282bbc160a046fff053b7fa44154c1ded0cae13ae975988589597893c87652613594dfc6c9308925430e62314491e4bb29c7

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

Filesize
44KB

MD5
3f70190e86fa3aef81768e5fd9dd862c

SHA1
8ad173aa4baf18d7b86d8f4e160d29a4baa73810

SHA256
b077b323bb0c5955af06b6e0c93ba36e489d6b0a8de9e2fc9c55fdb84550a883

SHA512
47f6417b26ffd92d44ee52e0c82f282bbc160a046fff053b7fa44154c1ded0cae13ae975988589597893c87652613594dfc6c9308925430e62314491e4bb29c7

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

Filesize
44KB

MD5
3f70190e86fa3aef81768e5fd9dd862c

SHA1
8ad173aa4baf18d7b86d8f4e160d29a4baa73810

SHA256
b077b323bb0c5955af06b6e0c93ba36e489d6b0a8de9e2fc9c55fdb84550a883

SHA512
47f6417b26ffd92d44ee52e0c82f282bbc160a046fff053b7fa44154c1ded0cae13ae975988589597893c87652613594dfc6c9308925430e62314491e4bb29c7

Download Submit
memory/792-63-0x0000000074EC0000-0x000000007546B000-memory.dmp

Filesize
5.7MB

Download
memory/792-65-0x0000000074EC0000-0x000000007546B000-memory.dmp

Filesize
5.7MB

Download
memory/1476-54-0x0000000076701000-0x0000000076703000-memory.dmp

Filesize
8KB

Download
memory/1476-55-0x0000000074EC0000-0x000000007546B000-memory.dmp

Filesize
5.7MB

Download
memory/1476-61-0x0000000074EC0000-0x000000007546B000-memory.dmp

Filesize
5.7MB

Download

Analysis

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