d1347d9e940bd05c1e34f37c9c716314b88fe6edd243719307df79dbaaedebfd

General

Target

2e942eab2c5befacb890b69e79044057.exe
Size

48KB
MD5

2e942eab2c5befacb890b69e79044057
SHA1

4d920e9e3b579ecff2169e245349ff04cee06a91
SHA256

d1347d9e940bd05c1e34f37c9c716314b88fe6edd243719307df79dbaaedebfd
SHA512

32393b0f360b6abb0e8fcfb5884a92225d3bbcfa0cd62eba8740f3681d08dc1fb240942c8ce928de857506f417198a1c9730f2b48c4c97c021e75275ec12ae1f
SSDEEP

768:zynb12Aw5J6HC4kq5Jp9bjAzhyY55J+NStcEeUlyqgZl4p67hhPC:Ub1MsHz3JDwhyWr+N95OTga6C

Score

8^/10

discovery persistence

Malware Config

Signatures

Server Software Component: Terminal Services DLL 1 TTPs 1 IoCs

persistence

Terminal Services DLL

T1505.005

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\SySyeu\Parameters\ServiceDll = "C:\\ProgramData\\Application Data\\259431160.dll"	2e942eab2c5befacb890b69e79044057.exe

Deletes itself 1 IoCs

pid	Process
2900	cmd.exe

Executes dropped EXE 1 IoCs

pid	Process
2872	SySyeu.exe

Loads dropped DLL 7 IoCs

pid	Process
1708	2e942eab2c5befacb890b69e79044057.exe
1268	svchost.exe
1268	svchost.exe
2872	SySyeu.exe
2872	SySyeu.exe
2872	SySyeu.exe
2872	SySyeu.exe

Creates a Windows Service
persistence

Drops file in System32 directory 2 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\SySyeu.exe	svchost.exe
File opened for modification	C:\Windows\SysWOW64\SySyeu.exe	svchost.exe

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

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 5 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2e942eab2c5befacb890b69e79044057.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	PING.EXE
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	SySyeu.exe

System Network Configuration Discovery: Internet Connection Discovery 1 TTPs 2 IoCs

Adversaries may check for Internet connectivity on compromised systems.

discovery

Internet Connection Discovery

T1016.001

pid	Process
2900	cmd.exe
2496	PING.EXE

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
2496	PING.EXE

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
1708	2e942eab2c5befacb890b69e79044057.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeIncBasePriorityPrivilege	1708	2e942eab2c5befacb890b69e79044057.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1708	2e942eab2c5befacb890b69e79044057.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 1708 wrote to memory of 2900	1708	2e942eab2c5befacb890b69e79044057.exe	32
PID 1708 wrote to memory of 2900	1708	2e942eab2c5befacb890b69e79044057.exe	32
PID 1708 wrote to memory of 2900	1708	2e942eab2c5befacb890b69e79044057.exe	32
PID 1708 wrote to memory of 2900	1708	2e942eab2c5befacb890b69e79044057.exe	32
PID 2900 wrote to memory of 2496	2900	cmd.exe	34
PID 2900 wrote to memory of 2496	2900	cmd.exe	34
PID 2900 wrote to memory of 2496	2900	cmd.exe	34
PID 2900 wrote to memory of 2496	2900	cmd.exe	34
PID 1268 wrote to memory of 2872	1268	svchost.exe	35
PID 1268 wrote to memory of 2872	1268	svchost.exe	35
PID 1268 wrote to memory of 2872	1268	svchost.exe	35
PID 1268 wrote to memory of 2872	1268	svchost.exe	35

C:\Users\Admin\AppData\Local\Temp\2e942eab2c5befacb890b69e79044057.exe
"C:\Users\Admin\AppData\Local\Temp\2e942eab2c5befacb890b69e79044057.exe"
1⤵
- Server Software Component: Terminal Services DLL
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1708
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c ping 127.0.0.1 -n 1 && del /f/q "C:\Users\Admin\AppData\Local\Temp\2e942eab2c5befacb890b69e79044057.exe"
  2⤵
  - Deletes itself
  - System Location Discovery: System Language Discovery
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious use of WriteProcessMemory
  PID:2900
- - C:\Windows\SysWOW64\PING.EXE
    ping 127.0.0.1 -n 1
    3⤵
    - System Location Discovery: System Language Discovery
    - System Network Configuration Discovery: Internet Connection Discovery
    - Runs ping.exe
    PID:2496

C:\Windows\SysWOW64\svchost.exe
C:\Windows\SysWOW64\svchost.exe -k "SySyeu"
1⤵
PID:2352

C:\Windows\SysWOW64\svchost.exe
C:\Windows\SysWOW64\svchost.exe -k "SySyeu"
1⤵
- Loads dropped DLL
- Drops file in System32 directory
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1268
- C:\Windows\SysWOW64\SySyeu.exe
  C:\Windows\system32\SySyeu.exe "c:\programdata\application data\259431160.dll",MainThread
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - System Location Discovery: System Language Discovery
  PID:2872

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Server Software Component

1

T1505

Terminal Services DLL

1

T1505.005

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Remote System Discovery

1

T1018

System Information Discovery

1

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

System Network Configuration Discovery

1

T1016

Internet Connection Discovery

1

T1016.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

\ProgramData\259431160.dll

Filesize
25KB

MD5
9c5d0e4c665a0db6cfa799d784ab61e1

SHA1
f29c269bf9ac8a12dcc30b099a25cadd61c02267

SHA256
2fdaf30e9cc183cb4843801c70fd3d337452218f3759318fe43141c2d3f1488f

SHA512
f7a794e63f3a01a6165deaad98d3a4679027bb8d93e139d901d0bcdee20947209a03cc720a89f396d11f89409820ba79f4ebb687789c3c2a2820d2291489af2f

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\Windows\SysWOW64\SySyeu.exe

Filesize
43KB

MD5
51138beea3e2c21ec44d0932c71762a8

SHA1
8939cf35447b22dd2c6e6f443446acc1bf986d58

SHA256
5ad3c37e6f2b9db3ee8b5aeedc474645de90c66e3d95f8620c48102f1eba4124

SHA512
794f30fe452117ff2a26dc9d7086aaf82b639c2632ac2e381a81f5239caaec7c96922ba5d2d90bfd8d74f0a6cd4f79fbda63e14c6b779e5cf6834c13e4e45e7d

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Analysis

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