1f0b950ecfeec6a65bc660a7be047f417cbbfeedce8425b962add10c77e5342a

General

Target

Server.exe
Size

37KB
MD5

8c4c96d00338879082b506bd938d0ba1
SHA1

bc0a286cf54fb47403eb48e710d953737313c5f9
SHA256

1f0b950ecfeec6a65bc660a7be047f417cbbfeedce8425b962add10c77e5342a
SHA512

344695ce36ab7637bdc32671c59fa9a02a8551576f645cb79ff670af2d0cd2078cf8f75be4830f8994d51e7e9757d762cde162c3a81a00d9e1b34f81065c80b2
SSDEEP

768:11kSdCNhszSDSMOxsIqrM+rMRa8NuXtxt:1iSdCNGySMOZV+gRJNS

Score

8^/10

defense_evasion discovery persistence privilege_escalation

Malware Config

Signatures

Modifies Windows Firewall 2 TTPs 1 IoCs

defense_evasion

Windows Service

T1543.003

Disable or Modify System Firewall

T1562.004

pid	Process
5084	netsh.exe

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-940901362-3608833189-1915618603-1000\Control Panel\International\Geo\Nation	Server.exe

Executes dropped EXE 1 IoCs

pid	Process
2744	ewsxr.exe

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

System Information Discovery
T1082

Event Triggered Execution: Netsh Helper DLL 1 TTPs 3 IoCs

Netsh.exe (also referred to as Netshell) is a command-line scripting utility used to interact with the network configuration of a system.

persistence privilege_escalation

Netsh Helper DLL

T1546.007

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe
Key queried	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe
Key value enumerated	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe

System Location Discovery: System Language Discovery 1 TTPs 3 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	Server.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	ewsxr.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe

Suspicious use of AdjustPrivilegeToken 35 IoCs

description	pid	Process
Token: SeDebugPrivilege	2744	ewsxr.exe
Token: 33	2744	ewsxr.exe
Token: SeIncBasePriorityPrivilege	2744	ewsxr.exe
Token: 33	2744	ewsxr.exe
Token: SeIncBasePriorityPrivilege	2744	ewsxr.exe
Token: 33	2744	ewsxr.exe
Token: SeIncBasePriorityPrivilege	2744	ewsxr.exe
Token: 33	2744	ewsxr.exe
Token: SeIncBasePriorityPrivilege	2744	ewsxr.exe
Token: 33	2744	ewsxr.exe
Token: SeIncBasePriorityPrivilege	2744	ewsxr.exe
Token: 33	2744	ewsxr.exe
Token: SeIncBasePriorityPrivilege	2744	ewsxr.exe
Token: 33	2744	ewsxr.exe
Token: SeIncBasePriorityPrivilege	2744	ewsxr.exe
Token: 33	2744	ewsxr.exe
Token: SeIncBasePriorityPrivilege	2744	ewsxr.exe
Token: 33	2744	ewsxr.exe
Token: SeIncBasePriorityPrivilege	2744	ewsxr.exe
Token: 33	2744	ewsxr.exe
Token: SeIncBasePriorityPrivilege	2744	ewsxr.exe
Token: 33	2744	ewsxr.exe
Token: SeIncBasePriorityPrivilege	2744	ewsxr.exe
Token: 33	2744	ewsxr.exe
Token: SeIncBasePriorityPrivilege	2744	ewsxr.exe
Token: 33	2744	ewsxr.exe
Token: SeIncBasePriorityPrivilege	2744	ewsxr.exe
Token: 33	2744	ewsxr.exe
Token: SeIncBasePriorityPrivilege	2744	ewsxr.exe
Token: 33	2744	ewsxr.exe
Token: SeIncBasePriorityPrivilege	2744	ewsxr.exe
Token: 33	2744	ewsxr.exe
Token: SeIncBasePriorityPrivilege	2744	ewsxr.exe
Token: 33	2744	ewsxr.exe
Token: SeIncBasePriorityPrivilege	2744	ewsxr.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 3712 wrote to memory of 2744	3712	Server.exe	83
PID 3712 wrote to memory of 2744	3712	Server.exe	83
PID 3712 wrote to memory of 2744	3712	Server.exe	83
PID 2744 wrote to memory of 5084	2744	ewsxr.exe	92
PID 2744 wrote to memory of 5084	2744	ewsxr.exe	92
PID 2744 wrote to memory of 5084	2744	ewsxr.exe	92

C:\Users\Admin\AppData\Local\Temp\Server.exe
"C:\Users\Admin\AppData\Local\Temp\Server.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3712
- C:\Users\Admin\AppData\Local\Temp\ewsxr.exe
  "C:\Users\Admin\AppData\Local\Temp\ewsxr.exe"
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2744
- - C:\Windows\SysWOW64\netsh.exe
    netsh firewall add allowedprogram "C:\Users\Admin\AppData\Local\Temp\ewsxr.exe" "ewsxr.exe" ENABLE
    3⤵
    - Modifies Windows Firewall
    - Event Triggered Execution: Netsh Helper DLL
    - System Location Discovery: System Language Discovery
    PID:5084

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Create or Modify System Process

1

T1543

Windows Service

1

T1543.003

Event Triggered Execution

1

T1546

Netsh Helper DLL

1

T1546.007

Privilege Escalation

Create or Modify System Process

1

T1543

Windows Service

1

T1543.003

Event Triggered Execution

1

T1546

Netsh Helper DLL

1

T1546.007

Defense Evasion

Impair Defenses

1

T1562

Disable or Modify System Firewall

1

T1562.004

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\ewsxr.exe

Filesize
37KB

MD5
8c4c96d00338879082b506bd938d0ba1

SHA1
bc0a286cf54fb47403eb48e710d953737313c5f9

SHA256
1f0b950ecfeec6a65bc660a7be047f417cbbfeedce8425b962add10c77e5342a

SHA512
344695ce36ab7637bdc32671c59fa9a02a8551576f645cb79ff670af2d0cd2078cf8f75be4830f8994d51e7e9757d762cde162c3a81a00d9e1b34f81065c80b2

Download Submit
memory/2744-12-0x0000000074BB0000-0x0000000075161000-memory.dmp

Filesize
5.7MB

Download
memory/2744-15-0x0000000074BB0000-0x0000000075161000-memory.dmp

Filesize
5.7MB

Download
memory/2744-14-0x0000000074BB0000-0x0000000075161000-memory.dmp

Filesize
5.7MB

Download
memory/2744-16-0x0000000074BB0000-0x0000000075161000-memory.dmp

Filesize
5.7MB

Download
memory/3712-0-0x0000000074BB2000-0x0000000074BB3000-memory.dmp

Filesize
4KB

Download
memory/3712-1-0x0000000074BB0000-0x0000000075161000-memory.dmp

Filesize
5.7MB

Download
memory/3712-2-0x0000000074BB0000-0x0000000075161000-memory.dmp

Filesize
5.7MB

Download
memory/3712-13-0x0000000074BB0000-0x0000000075161000-memory.dmp

Filesize
5.7MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads