39d48e5a8ae2b2f1190e468bb053c041f24a28b4de5980d5b75b5ee6605bb9f0

Analysis

max time kernel
103s
max time network
44s
platform
windows7_x64
resource
win7-20220812-en
resource tags

arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
submitted
12/10/2022, 16:00

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General

Target

39d48e5a8ae2b2f1190e468bb053c041f24a28b4de5980d5b75b5ee6605bb9f0.exe
Size

1.9MB
MD5

1dff19bfaffd13c6d5314f89cda3d9ec
SHA1

f22e3b69ec3d24205a50993316b0e21f2f2f2137
SHA256

39d48e5a8ae2b2f1190e468bb053c041f24a28b4de5980d5b75b5ee6605bb9f0
SHA512

5cd548e4bb345e7bfaaeba328448b4bcdc967ed79a3d54243b088f6327fb00b6c6a2ae2854bffcfd6750f6c808a86c94e13c491851918ea6f596460343af75ce
SSDEEP

49152:4IxzLHIIaGZ+EJTkQiona2Lxxa5+lCWjOkr3V47UuWKkAzT:OIaW+YTkQiona2LbplCWjBl4IuWKkAP

Score

8^/10

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
616	pcinf.exe

Drops file in System32 directory 2 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\pcinf.exe	39d48e5a8ae2b2f1190e468bb053c041f24a28b4de5980d5b75b5ee6605bb9f0.exe
File created	C:\Windows\SysWOW64\pcinf.exe	39d48e5a8ae2b2f1190e468bb053c041f24a28b4de5980d5b75b5ee6605bb9f0.exe

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

System Information Discovery
T1082

Modifies data under HKEY_USERS 2 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced	pcinf.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\EnableBalloonTips = "0"	pcinf.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
1088	39d48e5a8ae2b2f1190e468bb053c041f24a28b4de5980d5b75b5ee6605bb9f0.exe
616	pcinf.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

description	pid	Process
Token: SeDebugPrivilege	1088	39d48e5a8ae2b2f1190e468bb053c041f24a28b4de5980d5b75b5ee6605bb9f0.exe
Token: SeChangeNotifyPrivilege	1088	39d48e5a8ae2b2f1190e468bb053c041f24a28b4de5980d5b75b5ee6605bb9f0.exe
Token: SeDebugPrivilege	616	pcinf.exe
Token: SeChangeNotifyPrivilege	616	pcinf.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
1088	39d48e5a8ae2b2f1190e468bb053c041f24a28b4de5980d5b75b5ee6605bb9f0.exe
616	pcinf.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 1476 wrote to memory of 616	1476	taskeng.exe	27
PID 1476 wrote to memory of 616	1476	taskeng.exe	27
PID 1476 wrote to memory of 616	1476	taskeng.exe	27
PID 1476 wrote to memory of 616	1476	taskeng.exe	27

C:\Users\Admin\AppData\Local\Temp\39d48e5a8ae2b2f1190e468bb053c041f24a28b4de5980d5b75b5ee6605bb9f0.exe
"C:\Users\Admin\AppData\Local\Temp\39d48e5a8ae2b2f1190e468bb053c041f24a28b4de5980d5b75b5ee6605bb9f0.exe"
1⤵
- Drops file in System32 directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
PID:1088

C:\Windows\system32\taskeng.exe
taskeng.exe {72FF6399-B648-47F4-BEA5-6F9A6C0A67B9} S-1-5-18:NT AUTHORITY\System:Service:
1⤵
- Suspicious use of WriteProcessMemory
PID:1476
- C:\Windows\SysWOW64\pcinf.exe
  C:\Windows\SysWOW64\pcinf.exe wm2
  2⤵
  - Executes dropped EXE
  - Modifies data under HKEY_USERS
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  PID:616

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Windows\SysWOW64\pcinf.exe

Filesize
1.9MB

MD5
1dff19bfaffd13c6d5314f89cda3d9ec

SHA1
f22e3b69ec3d24205a50993316b0e21f2f2f2137

SHA256
39d48e5a8ae2b2f1190e468bb053c041f24a28b4de5980d5b75b5ee6605bb9f0

SHA512
5cd548e4bb345e7bfaaeba328448b4bcdc967ed79a3d54243b088f6327fb00b6c6a2ae2854bffcfd6750f6c808a86c94e13c491851918ea6f596460343af75ce

Download Submit
C:\Windows\SysWOW64\pcinf.exe

Filesize
1.9MB

MD5
1dff19bfaffd13c6d5314f89cda3d9ec

SHA1
f22e3b69ec3d24205a50993316b0e21f2f2f2137

SHA256
39d48e5a8ae2b2f1190e468bb053c041f24a28b4de5980d5b75b5ee6605bb9f0

SHA512
5cd548e4bb345e7bfaaeba328448b4bcdc967ed79a3d54243b088f6327fb00b6c6a2ae2854bffcfd6750f6c808a86c94e13c491851918ea6f596460343af75ce

Download Submit
memory/616-61-0x0000000000400000-0x000000000058D000-memory.dmp

Filesize
1.6MB

Download
memory/616-62-0x0000000000400000-0x000000000058D000-memory.dmp

Filesize
1.6MB

Download
memory/1088-54-0x0000000076681000-0x0000000076683000-memory.dmp

Filesize
8KB

Download
memory/1088-55-0x0000000000400000-0x000000000058D000-memory.dmp

Filesize
1.6MB

Download
memory/1088-56-0x0000000000400000-0x000000000058D000-memory.dmp

Filesize
1.6MB

Download