dfa31b84bc2fc462da90b7f1a13c30ef92965ceeb06db45879a5443ea0d99920

Resubmissions

16/12/2022, 08:37

221216-kjcrwaed77 10

16/12/2022, 08:22

221216-j92cgshb8y 10

Analysis

max time kernel
133s
max time network
153s
platform
windows10-2004_x64
resource
win10v2004-20220812-en
resource tags

arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-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-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe,C:\\Users\\Admin\\AppData\\Roaming\\Msacos\\Msacs.exe,"	reg.exe

Executes dropped EXE 1 IoCs

pid	Process
772	Msacs.exe

Runs ping.exe 1 TTPs 3 IoCs

Remote System Discovery

T1018

pid	Process
1752	PING.EXE
1008	PING.EXE
2088	PING.EXE

Suspicious behavior: EnumeratesProcesses 25 IoCs

pid	Process
944	Scan20221216192254.exe
944	Scan20221216192254.exe
944	Scan20221216192254.exe
944	Scan20221216192254.exe
944	Scan20221216192254.exe
944	Scan20221216192254.exe
944	Scan20221216192254.exe
944	Scan20221216192254.exe
944	Scan20221216192254.exe
944	Scan20221216192254.exe
944	Scan20221216192254.exe
944	Scan20221216192254.exe
944	Scan20221216192254.exe
944	Scan20221216192254.exe
944	Scan20221216192254.exe
944	Scan20221216192254.exe
944	Scan20221216192254.exe
944	Scan20221216192254.exe
944	Scan20221216192254.exe
944	Scan20221216192254.exe
944	Scan20221216192254.exe
944	Scan20221216192254.exe
944	Scan20221216192254.exe
772	Msacs.exe
772	Msacs.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	944	Scan20221216192254.exe
Token: SeDebugPrivilege	772	Msacs.exe

Suspicious use of WriteProcessMemory 21 IoCs

description	pid	Process	procid_target
PID 944 wrote to memory of 1580	944	Scan20221216192254.exe	80
PID 944 wrote to memory of 1580	944	Scan20221216192254.exe	80
PID 944 wrote to memory of 1580	944	Scan20221216192254.exe	80
PID 1580 wrote to memory of 1752	1580	cmd.exe	82
PID 1580 wrote to memory of 1752	1580	cmd.exe	82
PID 1580 wrote to memory of 1752	1580	cmd.exe	82
PID 944 wrote to memory of 3060	944	Scan20221216192254.exe	91
PID 944 wrote to memory of 3060	944	Scan20221216192254.exe	91
PID 944 wrote to memory of 3060	944	Scan20221216192254.exe	91
PID 3060 wrote to memory of 1008	3060	cmd.exe	93
PID 3060 wrote to memory of 1008	3060	cmd.exe	93
PID 3060 wrote to memory of 1008	3060	cmd.exe	93
PID 1580 wrote to memory of 540	1580	cmd.exe	94
PID 1580 wrote to memory of 540	1580	cmd.exe	94
PID 1580 wrote to memory of 540	1580	cmd.exe	94
PID 3060 wrote to memory of 2088	3060	cmd.exe	95
PID 3060 wrote to memory of 2088	3060	cmd.exe	95
PID 3060 wrote to memory of 2088	3060	cmd.exe	95
PID 3060 wrote to memory of 772	3060	cmd.exe	96
PID 3060 wrote to memory of 772	3060	cmd.exe	96
PID 3060 wrote to memory of 772	3060	cmd.exe	96

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:944
- C:\Windows\SysWOW64\cmd.exe
  "cmd" /c ping 127.0.0.1 -n 35 > 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:1580
- - C:\Windows\SysWOW64\PING.EXE
    ping 127.0.0.1 -n 35
    3⤵
    - Runs ping.exe
    PID:1752
- - 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:540
- C:\Windows\SysWOW64\cmd.exe
  "cmd" /c ping 127.0.0.1 -n 46 > nul && copy "C:\Users\Admin\AppData\Local\Temp\Scan20221216192254.exe" "C:\Users\Admin\AppData\Roaming\Msacos\Msacs.exe" && ping 127.0.0.1 -n 46 > nul && "C:\Users\Admin\AppData\Roaming\Msacos\Msacs.exe"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:3060
- - C:\Windows\SysWOW64\PING.EXE
    ping 127.0.0.1 -n 46
    3⤵
    - Runs ping.exe
    PID:1008
- - C:\Windows\SysWOW64\PING.EXE
    ping 127.0.0.1 -n 46
    3⤵
    - Runs ping.exe
    PID:2088
- - C:\Users\Admin\AppData\Roaming\Msacos\Msacs.exe
    "C:\Users\Admin\AppData\Roaming\Msacos\Msacs.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:772

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

C:\Users\Admin\AppData\Roaming\Msacos\Msacs.exe

Filesize
1.4MB

MD5
876f5f878fc3f716cd877443ee68f7e3

SHA1
35a223eadf77e713de0f6a7951fdb32ec5a48973

SHA256
dfa31b84bc2fc462da90b7f1a13c30ef92965ceeb06db45879a5443ea0d99920

SHA512
3bc2f3a97613d054261086d0c1e83dab9237717142ac7d3ffe91ca5e918f73f0cf57b53e86aa1b4170c5bc4794c661fd079217d9e8150f7a942dde4e43dc6e83

Download Submit
C:\Users\Admin\AppData\Roaming\Msacos\Msacs.exe

Filesize
1.4MB

MD5
876f5f878fc3f716cd877443ee68f7e3

SHA1
35a223eadf77e713de0f6a7951fdb32ec5a48973

SHA256
dfa31b84bc2fc462da90b7f1a13c30ef92965ceeb06db45879a5443ea0d99920

SHA512
3bc2f3a97613d054261086d0c1e83dab9237717142ac7d3ffe91ca5e918f73f0cf57b53e86aa1b4170c5bc4794c661fd079217d9e8150f7a942dde4e43dc6e83

Download Submit
memory/772-146-0x0000000000540000-0x00000000006A0000-memory.dmp

Filesize
1.4MB

Download
memory/944-135-0x00000000055F0000-0x000000000568C000-memory.dmp

Filesize
624KB

Download
memory/944-136-0x0000000001570000-0x000000000157A000-memory.dmp

Filesize
40KB

Download
memory/944-132-0x0000000000190000-0x00000000002F0000-memory.dmp

Filesize
1.4MB

Download
memory/944-134-0x0000000005550000-0x00000000055E2000-memory.dmp

Filesize
584KB

Download
memory/944-133-0x0000000005A60000-0x0000000006004000-memory.dmp

Filesize
5.6MB

Download