e350e7b3938a0ecab11e5ee072d1732789b867aa8c362c5c385a509fa9503110

General

Target

e350e7b3938a0ecab11e5ee072d1732789b867aa8c362c5c385a509fa9503110.exe
Size

360KB
MD5

02f6204106d70dd0b1cf5db2e6cdd502
SHA1

ac677f22d48d65eb30100ad742c1cceb04bc283a
SHA256

e350e7b3938a0ecab11e5ee072d1732789b867aa8c362c5c385a509fa9503110
SHA512

07fccb55c27e2d09fb1ad7f95f615d336bfc90cabf13ff2052f044cb01a9209ba9e568e2c64740023a3639cc649a5d433e0e7e13c8ca55e04a4eb76c7e7339c6
SSDEEP

3072:Ac35+4OE3grQW5Z+PchxxXWrI3NWggxXfiOXdQbMsjr9fP8y:J5+4FDfrFk

Score

10^/10

evasion persistence upx

Malware Config

Signatures

Modifies WinLogon for persistence 2 TTPs 2 IoCs

persistence

Winlogon Helper DLL

T1004

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "Explorer.exe \"C:\\Users\\Admin\\AppData\\Roaming\\csrss.exe\""	e350e7b3938a0ecab11e5ee072d1732789b867aa8c362c5c385a509fa9503110.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "Explorer.exe \"C:\\Users\\Admin\\AppData\\Roaming\\csrss.exe\""	csrss.exe

Executes dropped EXE 2 IoCs

pid	Process
1164	csrss.exe
1320	csrss.exe

Modifies Windows Firewall 1 TTPs 1 IoCs

evasion

Modify Existing Service

T1031

pid	Process
1092	netsh.exe

UPX packed file 8 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral1/memory/1324-57-0x0000000000400000-0x0000000000425000-memory.dmp	upx
behavioral1/memory/1324-60-0x0000000000400000-0x0000000000425000-memory.dmp	upx
behavioral1/memory/1324-61-0x0000000000400000-0x0000000000425000-memory.dmp	upx
behavioral1/memory/1324-64-0x0000000000400000-0x0000000000425000-memory.dmp	upx
behavioral1/memory/1324-67-0x0000000000400000-0x0000000000425000-memory.dmp	upx
behavioral1/memory/1324-74-0x0000000000400000-0x0000000000425000-memory.dmp	upx
behavioral1/memory/1320-87-0x0000000000400000-0x0000000000425000-memory.dmp	upx
behavioral1/memory/1320-89-0x0000000000400000-0x0000000000425000-memory.dmp	upx

Loads dropped DLL 2 IoCs

pid	Process
1324	e350e7b3938a0ecab11e5ee072d1732789b867aa8c362c5c385a509fa9503110.exe
1324	e350e7b3938a0ecab11e5ee072d1732789b867aa8c362c5c385a509fa9503110.exe

Adds Run key to start application 2 TTPs 8 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\MSWUpdate = "\"C:\\Users\\Admin\\AppData\\Roaming\\csrss.exe\""	e350e7b3938a0ecab11e5ee072d1732789b867aa8c362c5c385a509fa9503110.exe
Key created	\REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Windows\CurrentVersion\Run	csrss.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Windows\CurrentVersion\Run\MSWUpdate = "\"C:\\Users\\Admin\\AppData\\Roaming\\csrss.exe\""	csrss.exe
Key created	\REGISTRY\MACHINE\Software\Wow6432Node\Microsoft\Windows\CurrentVersion\Run	csrss.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\MSWUpdate = "\"C:\\Users\\Admin\\AppData\\Roaming\\csrss.exe\""	csrss.exe
Key created	\REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Windows\CurrentVersion\Run	e350e7b3938a0ecab11e5ee072d1732789b867aa8c362c5c385a509fa9503110.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Windows\CurrentVersion\Run\MSWUpdate = "\"C:\\Users\\Admin\\AppData\\Roaming\\csrss.exe\""	e350e7b3938a0ecab11e5ee072d1732789b867aa8c362c5c385a509fa9503110.exe
Key created	\REGISTRY\MACHINE\Software\Wow6432Node\Microsoft\Windows\CurrentVersion\Run	e350e7b3938a0ecab11e5ee072d1732789b867aa8c362c5c385a509fa9503110.exe

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 1388 set thread context of 1324	1388	e350e7b3938a0ecab11e5ee072d1732789b867aa8c362c5c385a509fa9503110.exe	26
PID 1164 set thread context of 1320	1164	csrss.exe	32

Suspicious use of SetWindowsHookEx 4 IoCs

pid	Process
1388	e350e7b3938a0ecab11e5ee072d1732789b867aa8c362c5c385a509fa9503110.exe
1324	e350e7b3938a0ecab11e5ee072d1732789b867aa8c362c5c385a509fa9503110.exe
1164	csrss.exe
1320	csrss.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 1388 wrote to memory of 1324	1388	e350e7b3938a0ecab11e5ee072d1732789b867aa8c362c5c385a509fa9503110.exe	26
PID 1388 wrote to memory of 1324	1388	e350e7b3938a0ecab11e5ee072d1732789b867aa8c362c5c385a509fa9503110.exe	26
PID 1388 wrote to memory of 1324	1388	e350e7b3938a0ecab11e5ee072d1732789b867aa8c362c5c385a509fa9503110.exe	26
PID 1388 wrote to memory of 1324	1388	e350e7b3938a0ecab11e5ee072d1732789b867aa8c362c5c385a509fa9503110.exe	26
PID 1388 wrote to memory of 1324	1388	e350e7b3938a0ecab11e5ee072d1732789b867aa8c362c5c385a509fa9503110.exe	26
PID 1388 wrote to memory of 1324	1388	e350e7b3938a0ecab11e5ee072d1732789b867aa8c362c5c385a509fa9503110.exe	26
PID 1388 wrote to memory of 1324	1388	e350e7b3938a0ecab11e5ee072d1732789b867aa8c362c5c385a509fa9503110.exe	26
PID 1388 wrote to memory of 1324	1388	e350e7b3938a0ecab11e5ee072d1732789b867aa8c362c5c385a509fa9503110.exe	26
PID 1388 wrote to memory of 1324	1388	e350e7b3938a0ecab11e5ee072d1732789b867aa8c362c5c385a509fa9503110.exe	26
PID 1324 wrote to memory of 1092	1324	e350e7b3938a0ecab11e5ee072d1732789b867aa8c362c5c385a509fa9503110.exe	29
PID 1324 wrote to memory of 1092	1324	e350e7b3938a0ecab11e5ee072d1732789b867aa8c362c5c385a509fa9503110.exe	29
PID 1324 wrote to memory of 1092	1324	e350e7b3938a0ecab11e5ee072d1732789b867aa8c362c5c385a509fa9503110.exe	29
PID 1324 wrote to memory of 1092	1324	e350e7b3938a0ecab11e5ee072d1732789b867aa8c362c5c385a509fa9503110.exe	29
PID 1324 wrote to memory of 1164	1324	e350e7b3938a0ecab11e5ee072d1732789b867aa8c362c5c385a509fa9503110.exe	31
PID 1324 wrote to memory of 1164	1324	e350e7b3938a0ecab11e5ee072d1732789b867aa8c362c5c385a509fa9503110.exe	31
PID 1324 wrote to memory of 1164	1324	e350e7b3938a0ecab11e5ee072d1732789b867aa8c362c5c385a509fa9503110.exe	31
PID 1324 wrote to memory of 1164	1324	e350e7b3938a0ecab11e5ee072d1732789b867aa8c362c5c385a509fa9503110.exe	31
PID 1164 wrote to memory of 1320	1164	csrss.exe	32
PID 1164 wrote to memory of 1320	1164	csrss.exe	32
PID 1164 wrote to memory of 1320	1164	csrss.exe	32
PID 1164 wrote to memory of 1320	1164	csrss.exe	32
PID 1164 wrote to memory of 1320	1164	csrss.exe	32
PID 1164 wrote to memory of 1320	1164	csrss.exe	32
PID 1164 wrote to memory of 1320	1164	csrss.exe	32
PID 1164 wrote to memory of 1320	1164	csrss.exe	32
PID 1164 wrote to memory of 1320	1164	csrss.exe	32

C:\Users\Admin\AppData\Local\Temp\e350e7b3938a0ecab11e5ee072d1732789b867aa8c362c5c385a509fa9503110.exe
"C:\Users\Admin\AppData\Local\Temp\e350e7b3938a0ecab11e5ee072d1732789b867aa8c362c5c385a509fa9503110.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1388
- C:\Users\Admin\AppData\Local\Temp\e350e7b3938a0ecab11e5ee072d1732789b867aa8c362c5c385a509fa9503110.exe
  "C:\Users\Admin\AppData\Local\Temp\e350e7b3938a0ecab11e5ee072d1732789b867aa8c362c5c385a509fa9503110.exe"
  2⤵
  - Modifies WinLogon for persistence
  - Loads dropped DLL
  - Adds Run key to start application
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:1324
- - C:\Windows\SysWOW64\netsh.exe
    netsh firewall add allowedprogram "C:\Users\Admin\AppData\Roaming\csrss.exe" CityScape Enable
    3⤵
    - Modifies Windows Firewall
    PID:1092
- - C:\Users\Admin\AppData\Roaming\csrss.exe
    /d C:\Users\Admin\AppData\Local\Temp\e350e7b3938a0ecab11e5ee072d1732789b867aa8c362c5c385a509fa9503110.exe
    3⤵
    - Executes dropped EXE
    - Suspicious use of SetThreadContext
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:1164
  - - C:\Users\Admin\AppData\Roaming\csrss.exe
      "C:\Users\Admin\AppData\Roaming\csrss.exe"
      4⤵
      Modifies WinLogon for persistence
      Executes dropped EXE
      Adds Run key to start application
      Suspicious use of SetWindowsHookEx
      PID:1320

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Modify Existing Service

1

T1031

Registry Run Keys / Startup Folder

Winlogon Helper DLL

Privilege Escalation

Defense Evasion

Modify Registry

2

T1112

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Roaming\csrss.exe

Filesize
360KB

MD5
6519adcd5136d04bc8444be019f90cb1

SHA1
0031e09b607f8e92c66c515862ca75a8056ed67e

SHA256
d25d5617edb0e420084a96f7cac347cf766198b437f3d83150780e2ccf503b67

SHA512
d50e17acfae8c402844b668f65d986d044caf9155e93dd824c0f70539090749e4f257708e36558e592485d4110276405d14ffb929ef4b466f2fe66c28b4fccf7

Download Submit
C:\Users\Admin\AppData\Roaming\csrss.exe

Filesize
360KB

MD5
6519adcd5136d04bc8444be019f90cb1

SHA1
0031e09b607f8e92c66c515862ca75a8056ed67e

SHA256
d25d5617edb0e420084a96f7cac347cf766198b437f3d83150780e2ccf503b67

SHA512
d50e17acfae8c402844b668f65d986d044caf9155e93dd824c0f70539090749e4f257708e36558e592485d4110276405d14ffb929ef4b466f2fe66c28b4fccf7

Download Submit
C:\Users\Admin\AppData\Roaming\csrss.exe

Filesize
360KB

MD5
6519adcd5136d04bc8444be019f90cb1

SHA1
0031e09b607f8e92c66c515862ca75a8056ed67e

SHA256
d25d5617edb0e420084a96f7cac347cf766198b437f3d83150780e2ccf503b67

SHA512
d50e17acfae8c402844b668f65d986d044caf9155e93dd824c0f70539090749e4f257708e36558e592485d4110276405d14ffb929ef4b466f2fe66c28b4fccf7

Download Submit
\Users\Admin\AppData\Roaming\csrss.exe

Filesize
360KB

MD5
6519adcd5136d04bc8444be019f90cb1

SHA1
0031e09b607f8e92c66c515862ca75a8056ed67e

SHA256
d25d5617edb0e420084a96f7cac347cf766198b437f3d83150780e2ccf503b67

SHA512
d50e17acfae8c402844b668f65d986d044caf9155e93dd824c0f70539090749e4f257708e36558e592485d4110276405d14ffb929ef4b466f2fe66c28b4fccf7

Download Submit
\Users\Admin\AppData\Roaming\csrss.exe

Filesize
360KB

MD5
6519adcd5136d04bc8444be019f90cb1

SHA1
0031e09b607f8e92c66c515862ca75a8056ed67e

SHA256
d25d5617edb0e420084a96f7cac347cf766198b437f3d83150780e2ccf503b67

SHA512
d50e17acfae8c402844b668f65d986d044caf9155e93dd824c0f70539090749e4f257708e36558e592485d4110276405d14ffb929ef4b466f2fe66c28b4fccf7

Download Submit
memory/1164-81-0x0000000000400000-0x0000000000476000-memory.dmp

Filesize
472KB

Download
memory/1320-89-0x0000000000400000-0x0000000000425000-memory.dmp

Filesize
148KB

Download
memory/1320-87-0x0000000000400000-0x0000000000425000-memory.dmp

Filesize
148KB

Download
memory/1324-61-0x0000000000400000-0x0000000000425000-memory.dmp

Filesize
148KB

Download
memory/1324-64-0x0000000000400000-0x0000000000425000-memory.dmp

Filesize
148KB

Download
memory/1324-60-0x0000000000400000-0x0000000000425000-memory.dmp

Filesize
148KB

Download
memory/1324-74-0x0000000000400000-0x0000000000425000-memory.dmp

Filesize
148KB

Download
memory/1324-66-0x00000000768A1000-0x00000000768A3000-memory.dmp

Filesize
8KB

Download
memory/1324-57-0x0000000000400000-0x0000000000425000-memory.dmp

Filesize
148KB

Download
memory/1324-67-0x0000000000400000-0x0000000000425000-memory.dmp

Filesize
148KB

Download
memory/1388-54-0x0000000000400000-0x0000000000476000-memory.dmp

Filesize
472KB

Download
memory/1388-65-0x0000000000400000-0x0000000000476000-memory.dmp

Filesize
472KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads