476328c1ba85a1df9b0e678b9219dd1d5e529596303896049797683f20ad23e2

General

Target

0x000b00000001225f-4.exe
Size

48KB
MD5

2c8e6b45f0113b45f9187b60df114fef
SHA1

7e7b6f59fced74c16bef14f03f19eeecb5d34103
SHA256

476328c1ba85a1df9b0e678b9219dd1d5e529596303896049797683f20ad23e2
SHA512

3a415e14ce61e0dfbdd1064f39b129f11ee1419442c49209e62c90d54d57b4a9ef8544f2108bf562ec9d8c9dd3daa3221a4b670918ba48af68ca439921301337
SSDEEP

768:zynb12Aw5J6HC4kq5Jp9bjAzhyY55J+NStcEeUlyqgZl4p67ohPC:Ub1MsHz3JDwhyWr+N95OTga6L

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\encvbk\Parameters\ServiceDll = "C:\\Program Files (x86)\\259446822.dll"	0x000b00000001225f-4.exe

Deletes itself 1 IoCs

pid	Process
2188	cmd.exe

Executes dropped EXE 1 IoCs

pid	Process
2748	encvbk.exe

Loads dropped DLL 7 IoCs

pid	Process
2072	0x000b00000001225f-4.exe
2448	svchost.exe
2448	svchost.exe
2748	encvbk.exe
2748	encvbk.exe
2748	encvbk.exe
2748	encvbk.exe

Creates a Windows Service
persistence

Drops file in System32 directory 2 IoCs

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

Drops file in Program Files directory 1 IoCs

description	ioc	Process
File created	C:\Program Files (x86)\259446822.dll	0x000b00000001225f-4.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	0x000b00000001225f-4.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	encvbk.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
2188	cmd.exe
2216	PING.EXE

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
2216	PING.EXE

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
2072	0x000b00000001225f-4.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeIncBasePriorityPrivilege	2072	0x000b00000001225f-4.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2072	0x000b00000001225f-4.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 2072 wrote to memory of 2188	2072	0x000b00000001225f-4.exe	33
PID 2072 wrote to memory of 2188	2072	0x000b00000001225f-4.exe	33
PID 2072 wrote to memory of 2188	2072	0x000b00000001225f-4.exe	33
PID 2072 wrote to memory of 2188	2072	0x000b00000001225f-4.exe	33
PID 2188 wrote to memory of 2216	2188	cmd.exe	35
PID 2188 wrote to memory of 2216	2188	cmd.exe	35
PID 2188 wrote to memory of 2216	2188	cmd.exe	35
PID 2188 wrote to memory of 2216	2188	cmd.exe	35
PID 2448 wrote to memory of 2748	2448	svchost.exe	36
PID 2448 wrote to memory of 2748	2448	svchost.exe	36
PID 2448 wrote to memory of 2748	2448	svchost.exe	36
PID 2448 wrote to memory of 2748	2448	svchost.exe	36

C:\Users\Admin\AppData\Local\Temp\0x000b00000001225f-4.exe
"C:\Users\Admin\AppData\Local\Temp\0x000b00000001225f-4.exe"
1⤵
- Server Software Component: Terminal Services DLL
- Loads dropped DLL
- Drops file in Program Files directory
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2072
- 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\0x000b00000001225f-4.exe"
  2⤵
  - Deletes itself
  - System Location Discovery: System Language Discovery
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious use of WriteProcessMemory
  PID:2188
- - 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:2216

C:\Windows\SysWOW64\svchost.exe
C:\Windows\SysWOW64\svchost.exe -k "encvbk"
1⤵
PID:1668

C:\Windows\SysWOW64\svchost.exe
C:\Windows\SysWOW64\svchost.exe -k "encvbk"
1⤵
- Loads dropped DLL
- Drops file in System32 directory
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2448
- C:\Windows\SysWOW64\encvbk.exe
  C:\Windows\system32\encvbk.exe "c:\program files (x86)\259446822.dll",MainThread
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - System Location Discovery: System Language Discovery
  PID:2748

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

\Program Files (x86)\259446822.dll

Filesize
25KB

MD5
0a9a34b7b8be7680123dc29107a3eaac

SHA1
883f19efcea8184b9d01e5aae9455de0b64d71eb

SHA256
c105d6b7304a43bfacf713b09c01e213047ac1e9123c1723e0164cf644cb0f37

SHA512
6002ab855d8c96a43d9880de14a09e4e96d51336b4d0203a1d9470ac9ff1cf4a56faf15c6fe62fffc4b52970d4788eb341125d90641365f89cd6780fdae3ab08

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\Windows\SysWOW64\encvbk.exe

Filesize
43KB

MD5
51138beea3e2c21ec44d0932c71762a8

SHA1
8939cf35447b22dd2c6e6f443446acc1bf986d58

SHA256
5ad3c37e6f2b9db3ee8b5aeedc474645de90c66e3d95f8620c48102f1eba4124

SHA512
794f30fe452117ff2a26dc9d7086aaf82b639c2632ac2e381a81f5239caaec7c96922ba5d2d90bfd8d74f0a6cd4f79fbda63e14c6b779e5cf6834c13e4e45e7d

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Analysis

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