c1466987778f79f61ece380dfa9a1ef587962e9bc8b0f19d2295a08f66af44fa

General

Target
DARIUS1378910.exe
Size 93KB
Sample240725-zf9prstbpp
SHA256 c1466987778f79f61ece380dfa9a1ef587962e9bc8b0f19d2295a08f66af44fa
MD5 44141455ee3fbf19c849ffecfa884418
SHA1 3034ef6767655b718f8234f1f6bf7a85d9a0329c
SHA512 3e4ce5576f35d358a91c2b8eda7c8ded51a693d6c72dea4a88cd0e1bdbf55ec560fd23d4e608f467ebf1cded10016675871f331f73b5f7aaaadd6136e904bd1b
SSDEEP 1536:3/u4/OzaadeAZSjt5sjEwzGi1dDkDogS:3/IaadeAZofti1dSR
MD5 SHA1 SHA512 SSDEEP

Score

8^/10

discovery evasion persistence privilege_escalation

Malware Config

Signatures

Modifies Windows Firewall 2 TTPs 1 IoCs

evasion

Windows Service

T1543.003

Disable or Modify System Firewall

T1562.004

pid	Process
2452	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-1-5-21-1705699165-553239100-4129523827-1000\Control Panel\International\Geo\Nation	DARIUS1378910.exe

Drops startup file 2 IoCs

description	ioc	Process
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Microsoft Corporation.exe	server.exe
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Microsoft Corporation.exe	server.exe

Executes dropped EXE 1 IoCs

pid	Process
2996	server.exe

Drops file in System32 directory 2 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\Explower.exe	server.exe
File created	C:\Windows\SysWOW64\Explower.exe	server.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	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	DARIUS1378910.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	server.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2996	server.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
2996	server.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 1016 wrote to memory of 2996	1016	DARIUS1378910.exe	87
PID 1016 wrote to memory of 2996	1016	DARIUS1378910.exe	87
PID 1016 wrote to memory of 2996	1016	DARIUS1378910.exe	87
PID 2996 wrote to memory of 2452	2996	server.exe	89
PID 2996 wrote to memory of 2452	2996	server.exe	89
PID 2996 wrote to memory of 2452	2996	server.exe	89

C:\Users\Admin\AppData\Local\Temp\DARIUS1378910.exe
"C:\Users\Admin\AppData\Local\Temp\DARIUS1378910.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1016
- C:\Users\Admin\AppData\Local\Temp\server.exe
  "C:\Users\Admin\AppData\Local\Temp\server.exe"
  2⤵
  - Drops startup file
  - Executes dropped EXE
  - Drops file in System32 directory
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: GetForegroundWindowSpam
  - Suspicious use of FindShellTrayWindow
  - Suspicious use of WriteProcessMemory
  PID:2996
- - C:\Windows\SysWOW64\netsh.exe
    netsh firewall add allowedprogram "C:\Users\Admin\AppData\Local\Temp\server.exe" "server.exe" ENABLE
    3⤵
    - Modifies Windows Firewall
    - Event Triggered Execution: Netsh Helper DLL
    - System Location Discovery: System Language Discovery
    PID:2452

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

server.exe

Path C:\Users\Admin\AppData\Local\Temp\server.exe
Size 93KB
SHA256 c1466987778f79f61ece380dfa9a1ef587962e9bc8b0f19d2295a08f66af44fa
MD5 44141455ee3fbf19c849ffecfa884418
SHA1 3034ef6767655b718f8234f1f6bf7a85d9a0329c
SHA512 3e4ce5576f35d358a91c2b8eda7c8ded51a693d6c72dea4a88cd0e1bdbf55ec560fd23d4e608f467ebf1cded10016675871f331f73b5f7aaaadd6136e904bd1b
SSDEEP 1536:3/u4/OzaadeAZSjt5sjEwzGi1dDkDogS:3/IaadeAZofti1dSR
MD5 SHA1 SHA512 SSDEEP

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app

Path C:\Users\Admin\AppData\Roaming\app
Size 5B
SHA256 275918973c23ad700f278c69cc03c9c82ec9f4d9ed0f53111ad22bec197ff440
MD5 cac4598fdc0f92181616d12833eb6ca1
SHA1 80a7b7a46a0e8e674b782b9eb569e5430a69c84b
SHA512 01a7556bfcce6d9d8251aadc7f6e6169fdd0477d487ce88729c44bfe8b85b2eee500985d553c0479765ef5b5c6dc3517c0305efb9089814c3f8a9ea6fc51c713
MD5 SHA1 SHA512

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memory/1016-0-0x0000000074C22000-0x0000000074C23000-memory.dmp

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memory/1016-1-0x0000000074C20000-0x00000000751D1000-memory.dmp

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memory/1016-2-0x0000000074C20000-0x00000000751D1000-memory.dmp

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memory/1016-13-0x0000000074C20000-0x00000000751D1000-memory.dmp

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memory/2996-14-0x0000000074C20000-0x00000000751D1000-memory.dmp

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memory/2996-15-0x0000000074C20000-0x00000000751D1000-memory.dmp

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memory/2996-20-0x0000000074C20000-0x00000000751D1000-memory.dmp

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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