dfa31b84bc2fc462da90b7f1a13c30ef92965ceeb06db45879a5443ea0d99920

Resubmissions

16/12/2022, 08:37

221216-kjcrwaed77 10

16/12/2022, 08:22

221216-j92cgshb8y 10

Analysis

max time kernel
150s
max time network
46s
platform
windows7_x64
resource
win7-20220812-en
resource tags

arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
submitted
16/12/2022, 08:22

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General

Target

Scan20221216192254.exe
Size

1.4MB
MD5

876f5f878fc3f716cd877443ee68f7e3
SHA1

35a223eadf77e713de0f6a7951fdb32ec5a48973
SHA256

dfa31b84bc2fc462da90b7f1a13c30ef92965ceeb06db45879a5443ea0d99920
SHA512

3bc2f3a97613d054261086d0c1e83dab9237717142ac7d3ffe91ca5e918f73f0cf57b53e86aa1b4170c5bc4794c661fd079217d9e8150f7a942dde4e43dc6e83
SSDEEP

12288:OixF+mYOpvTDg1Hoz+JE2QsO4BeylBqN6hFfX05M1pDUQDoC+v5c+JQZ24146/PQ:rCEHsOzj4j85M1hUQDAxzJX4vgkW

Score

10^/10

persistence

Malware Config

Signatures

Modifies WinLogon for persistence 2 TTPs 1 IoCs

persistence

Winlogon Helper DLL

T1004

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe,C:\\Users\\Admin\\AppData\\Roaming\\Msacos\\Msacs.exe,"	reg.exe

Runs ping.exe 1 TTPs 3 IoCs

Remote System Discovery

T1018

pid	Process
1640	PING.EXE
1160	PING.EXE
1812	PING.EXE

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
1212	Scan20221216192254.exe
1212	Scan20221216192254.exe
1212	Scan20221216192254.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1212	Scan20221216192254.exe

Suspicious use of WriteProcessMemory 24 IoCs

description	pid	Process	procid_target
PID 1212 wrote to memory of 960	1212	Scan20221216192254.exe	28
PID 1212 wrote to memory of 960	1212	Scan20221216192254.exe	28
PID 1212 wrote to memory of 960	1212	Scan20221216192254.exe	28
PID 1212 wrote to memory of 960	1212	Scan20221216192254.exe	28
PID 960 wrote to memory of 1640	960	cmd.exe	30
PID 960 wrote to memory of 1640	960	cmd.exe	30
PID 960 wrote to memory of 1640	960	cmd.exe	30
PID 960 wrote to memory of 1640	960	cmd.exe	30
PID 1212 wrote to memory of 992	1212	Scan20221216192254.exe	31
PID 1212 wrote to memory of 992	1212	Scan20221216192254.exe	31
PID 1212 wrote to memory of 992	1212	Scan20221216192254.exe	31
PID 1212 wrote to memory of 992	1212	Scan20221216192254.exe	31
PID 992 wrote to memory of 1160	992	cmd.exe	33
PID 992 wrote to memory of 1160	992	cmd.exe	33
PID 992 wrote to memory of 1160	992	cmd.exe	33
PID 992 wrote to memory of 1160	992	cmd.exe	33
PID 960 wrote to memory of 636	960	cmd.exe	34
PID 960 wrote to memory of 636	960	cmd.exe	34
PID 960 wrote to memory of 636	960	cmd.exe	34
PID 960 wrote to memory of 636	960	cmd.exe	34
PID 992 wrote to memory of 1812	992	cmd.exe	35
PID 992 wrote to memory of 1812	992	cmd.exe	35
PID 992 wrote to memory of 1812	992	cmd.exe	35
PID 992 wrote to memory of 1812	992	cmd.exe	35

C:\Users\Admin\AppData\Local\Temp\Scan20221216192254.exe
"C:\Users\Admin\AppData\Local\Temp\Scan20221216192254.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1212
- C:\Windows\SysWOW64\cmd.exe
  "cmd" /c ping 127.0.0.1 -n 36 > nul && REG ADD "HKCU\Software\Microsoft\Windows NT\CurrentVersion\Winlogon" /f /v "Shell" /t REG_SZ /d "explorer.exe,C:\Users\Admin\AppData\Roaming\Msacos\Msacs.exe,"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:960
- - C:\Windows\SysWOW64\PING.EXE
    ping 127.0.0.1 -n 36
    3⤵
    - Runs ping.exe
    PID:1640
- - C:\Windows\SysWOW64\reg.exe
    REG ADD "HKCU\Software\Microsoft\Windows NT\CurrentVersion\Winlogon" /f /v "Shell" /t REG_SZ /d "explorer.exe,C:\Users\Admin\AppData\Roaming\Msacos\Msacs.exe,"
    3⤵
    - Modifies WinLogon for persistence
    PID:636
- C:\Windows\SysWOW64\cmd.exe
  "cmd" /c ping 127.0.0.1 -n 42 > nul && copy "C:\Users\Admin\AppData\Local\Temp\Scan20221216192254.exe" "C:\Users\Admin\AppData\Roaming\Msacos\Msacs.exe" && ping 127.0.0.1 -n 42 > nul && "C:\Users\Admin\AppData\Roaming\Msacos\Msacs.exe"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:992
- - C:\Windows\SysWOW64\PING.EXE
    ping 127.0.0.1 -n 42
    3⤵
    - Runs ping.exe
    PID:1160
- - C:\Windows\SysWOW64\PING.EXE
    ping 127.0.0.1 -n 42
    3⤵
    - Runs ping.exe
    PID:1812

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Winlogon Helper DLL

T1004

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Remote System Discovery

T1018

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/1212-54-0x0000000000980000-0x0000000000AE0000-memory.dmp

Filesize
1.4MB

Download
memory/1212-55-0x0000000076711000-0x0000000076713000-memory.dmp

Filesize
8KB

Download
memory/1212-56-0x0000000002070000-0x00000000020A0000-memory.dmp

Filesize
192KB

Download
memory/1212-57-0x0000000000920000-0x0000000000938000-memory.dmp

Filesize
96KB

Download