68a02a2f513b9ab2643d69f0b8726999a12bf7fd3ade5df8b8b42fe3cbea7c47

Analysis

max time kernel
149s
max time network
145s
platform
windows10-2004_x64
resource
win10v2004-20230220-en
resource tags

arch:x64arch:x86image:win10v2004-20230220-enlocale:en-usos:windows10-2004-x64system
submitted
15-03-2023 08:17

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

Invoice.exe
Size

592KB
MD5

fed122c27dd23694b3f84df9bc37ea14
SHA1

e5e8f651530c1ee6ad12d0bdc06b1f86bf74ff38
SHA256

3d7a7cad37509dedfd5d195c2f974e4ed7b2a03ead71e4744d753f40a3d4b43d
SHA512

6e2e84c925e4b6e561d0c27f997bef7b319c87f8ab12e1767e072ce33ae4d487c821835299dcc52c2a8084d98f2018750d7cc489cadcb11b43a6a411c179f17d
SSDEEP

12288:LLxq34o4lbX2ZE2cjTYNqy+1oE9hPIc0ohhQ7OfJ+6bhwfK71aK:UohAcFhhQ7OBtf

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-1-5-21-1529757233-3489015626-3409890339-1000\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe,C:\\Users\\Admin\\AppData\\Local\\oyj.exe,"	reg.exe

Executes dropped EXE 1 IoCs

pid	Process
928	oyj.exe

Runs ping.exe 1 TTPs 3 IoCs

Remote System Discovery

T1018

pid	Process
3820	PING.EXE
4340	PING.EXE
2820	PING.EXE

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
1636	Invoice.exe
1636	Invoice.exe
1636	Invoice.exe
1636	Invoice.exe
1636	Invoice.exe
1636	Invoice.exe
1636	Invoice.exe
1636	Invoice.exe
1636	Invoice.exe
1636	Invoice.exe
1636	Invoice.exe
1636	Invoice.exe
1636	Invoice.exe
1636	Invoice.exe
1636	Invoice.exe
1636	Invoice.exe
1636	Invoice.exe
1636	Invoice.exe
1636	Invoice.exe
1636	Invoice.exe
1636	Invoice.exe
1636	Invoice.exe
1636	Invoice.exe
1636	Invoice.exe
1636	Invoice.exe
1636	Invoice.exe
1636	Invoice.exe
1636	Invoice.exe
1636	Invoice.exe
1636	Invoice.exe
1636	Invoice.exe
1636	Invoice.exe
1636	Invoice.exe
1636	Invoice.exe
1636	Invoice.exe
1636	Invoice.exe
1636	Invoice.exe
1636	Invoice.exe
1636	Invoice.exe
1636	Invoice.exe
1636	Invoice.exe
1636	Invoice.exe
1636	Invoice.exe
1636	Invoice.exe
1636	Invoice.exe
1636	Invoice.exe
1636	Invoice.exe
1636	Invoice.exe
1636	Invoice.exe
1636	Invoice.exe
1636	Invoice.exe
1636	Invoice.exe
1636	Invoice.exe
1636	Invoice.exe
1636	Invoice.exe
1636	Invoice.exe
1636	Invoice.exe
1636	Invoice.exe
1636	Invoice.exe
1636	Invoice.exe
1636	Invoice.exe
1636	Invoice.exe
1636	Invoice.exe
1636	Invoice.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1636	Invoice.exe
Token: SeDebugPrivilege	928	oyj.exe

Suspicious use of WriteProcessMemory 21 IoCs

description	pid	Process	procid_target
PID 1636 wrote to memory of 228	1636	Invoice.exe	89
PID 1636 wrote to memory of 228	1636	Invoice.exe	89
PID 1636 wrote to memory of 228	1636	Invoice.exe	89
PID 228 wrote to memory of 3820	228	cmd.exe	92
PID 228 wrote to memory of 3820	228	cmd.exe	92
PID 228 wrote to memory of 3820	228	cmd.exe	92
PID 1636 wrote to memory of 4988	1636	Invoice.exe	97
PID 1636 wrote to memory of 4988	1636	Invoice.exe	97
PID 1636 wrote to memory of 4988	1636	Invoice.exe	97
PID 4988 wrote to memory of 4340	4988	cmd.exe	99
PID 4988 wrote to memory of 4340	4988	cmd.exe	99
PID 4988 wrote to memory of 4340	4988	cmd.exe	99
PID 228 wrote to memory of 2028	228	cmd.exe	100
PID 228 wrote to memory of 2028	228	cmd.exe	100
PID 228 wrote to memory of 2028	228	cmd.exe	100
PID 4988 wrote to memory of 2820	4988	cmd.exe	102
PID 4988 wrote to memory of 2820	4988	cmd.exe	102
PID 4988 wrote to memory of 2820	4988	cmd.exe	102
PID 4988 wrote to memory of 928	4988	cmd.exe	111
PID 4988 wrote to memory of 928	4988	cmd.exe	111
PID 4988 wrote to memory of 928	4988	cmd.exe	111

C:\Users\Admin\AppData\Local\Temp\Invoice.exe
"C:\Users\Admin\AppData\Local\Temp\Invoice.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1636
- 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\Local\oyj.exe,"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:228
- - C:\Windows\SysWOW64\PING.EXE
    ping 127.0.0.1 -n 36
    3⤵
    - Runs ping.exe
    PID:3820
- - 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\Local\oyj.exe,"
    3⤵
    - Modifies WinLogon for persistence
    PID:2028
- C:\Windows\SysWOW64\cmd.exe
  "cmd" /c ping 127.0.0.1 -n 40 > nul && copy "C:\Users\Admin\AppData\Local\Temp\Invoice.exe" "C:\Users\Admin\AppData\Local\oyj.exe" && ping 127.0.0.1 -n 40 > nul && "C:\Users\Admin\AppData\Local\oyj.exe"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:4988
- - C:\Windows\SysWOW64\PING.EXE
    ping 127.0.0.1 -n 40
    3⤵
    - Runs ping.exe
    PID:4340
- - C:\Windows\SysWOW64\PING.EXE
    ping 127.0.0.1 -n 40
    3⤵
    - Runs ping.exe
    PID:2820
- - C:\Users\Admin\AppData\Local\oyj.exe
    "C:\Users\Admin\AppData\Local\oyj.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious use of AdjustPrivilegeToken
    PID:928

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

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\oyj.exe

Filesize
592KB

MD5
fed122c27dd23694b3f84df9bc37ea14

SHA1
e5e8f651530c1ee6ad12d0bdc06b1f86bf74ff38

SHA256
3d7a7cad37509dedfd5d195c2f974e4ed7b2a03ead71e4744d753f40a3d4b43d

SHA512
6e2e84c925e4b6e561d0c27f997bef7b319c87f8ab12e1767e072ce33ae4d487c821835299dcc52c2a8084d98f2018750d7cc489cadcb11b43a6a411c179f17d

Download Submit
C:\Users\Admin\AppData\Local\oyj.exe

Filesize
592KB

MD5
fed122c27dd23694b3f84df9bc37ea14

SHA1
e5e8f651530c1ee6ad12d0bdc06b1f86bf74ff38

SHA256
3d7a7cad37509dedfd5d195c2f974e4ed7b2a03ead71e4744d753f40a3d4b43d

SHA512
6e2e84c925e4b6e561d0c27f997bef7b319c87f8ab12e1767e072ce33ae4d487c821835299dcc52c2a8084d98f2018750d7cc489cadcb11b43a6a411c179f17d

Download Submit
memory/928-160-0x0000000005490000-0x00000000054A0000-memory.dmp

Filesize
64KB

Download
memory/928-159-0x0000000005490000-0x00000000054A0000-memory.dmp

Filesize
64KB

Download
memory/928-158-0x0000000005490000-0x00000000054A0000-memory.dmp

Filesize
64KB

Download
memory/928-157-0x0000000005490000-0x00000000054A0000-memory.dmp

Filesize
64KB

Download
memory/928-156-0x0000000005490000-0x00000000054A0000-memory.dmp

Filesize
64KB

Download
memory/928-155-0x0000000005490000-0x00000000054A0000-memory.dmp

Filesize
64KB

Download
memory/928-154-0x0000000005490000-0x00000000054A0000-memory.dmp

Filesize
64KB

Download
memory/928-153-0x0000000005490000-0x00000000054A0000-memory.dmp

Filesize
64KB

Download
memory/928-152-0x0000000000FE0000-0x000000000107A000-memory.dmp

Filesize
616KB

Download
memory/1636-139-0x0000000004BE0000-0x0000000004BEA000-memory.dmp

Filesize
40KB

Download
memory/1636-145-0x0000000005100000-0x0000000005110000-memory.dmp

Filesize
64KB

Download
memory/1636-144-0x0000000005100000-0x0000000005110000-memory.dmp

Filesize
64KB

Download
memory/1636-143-0x0000000005100000-0x0000000005110000-memory.dmp

Filesize
64KB

Download
memory/1636-142-0x0000000005100000-0x0000000005110000-memory.dmp

Filesize
64KB

Download
memory/1636-141-0x0000000005100000-0x0000000005110000-memory.dmp

Filesize
64KB

Download
memory/1636-140-0x0000000005100000-0x0000000005110000-memory.dmp

Filesize
64KB

Download
memory/1636-133-0x00000000005E0000-0x000000000067A000-memory.dmp

Filesize
616KB

Download
memory/1636-138-0x0000000005100000-0x0000000005110000-memory.dmp

Filesize
64KB

Download
memory/1636-137-0x00000000087F0000-0x0000000008882000-memory.dmp

Filesize
584KB

Download
memory/1636-136-0x0000000005100000-0x0000000005110000-memory.dmp

Filesize
64KB

Download
memory/1636-135-0x00000000051D0000-0x000000000526C000-memory.dmp

Filesize
624KB

Download
memory/1636-134-0x0000000005780000-0x0000000005D24000-memory.dmp

Filesize
5.6MB

Download