0dfca39c7ebcca00525b6d29fb720a32396a12716322609498528bdcf91d8715

General

Target

0dfca39c7ebcca00525b6d29fb720a32396a12716322609498528bdcf91d8715.exe
Size

29KB
MD5

7eeb03f03f522d069360a11605d8c36f
SHA1

c822086cc3c0aeab9940880cccec95096d3fe5a4
SHA256

0dfca39c7ebcca00525b6d29fb720a32396a12716322609498528bdcf91d8715
SHA512

1d9d9d2915c2cc53840539bf71b4d200ed3744159dbdb56a85010f12600b891b34941fecdf455886c00a4b96ccbe1c903b3db7a8842a177ba1f99ac0db442b61
SSDEEP

384:IYs5l7VL9skVQ42BkSv5dAsCGmqDm+jeI7GBsbh0w4wlAokw9OhgOL1vYRGOZzoZ:k7/skCXkQossqtje3BKh0p29SgRiv

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
5016	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-1-5-21-2170637797-568393320-3232933035-1000\Control Panel\International\Geo\Nation	0dfca39c7ebcca00525b6d29fb720a32396a12716322609498528bdcf91d8715.exe

Executes dropped EXE 1 IoCs

pid	Process
3476	Severn.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	0dfca39c7ebcca00525b6d29fb720a32396a12716322609498528bdcf91d8715.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Severn.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe

Suspicious behavior: EnumeratesProcesses 48 IoCs

pid	Process
3476	Severn.exe
3476	Severn.exe
3476	Severn.exe
3476	Severn.exe
3476	Severn.exe
3476	Severn.exe
3476	Severn.exe
3476	Severn.exe
3476	Severn.exe
3476	Severn.exe
3476	Severn.exe
3476	Severn.exe
3476	Severn.exe
3476	Severn.exe
3476	Severn.exe
3476	Severn.exe
3476	Severn.exe
3476	Severn.exe
3476	Severn.exe
3476	Severn.exe
3476	Severn.exe
3476	Severn.exe
3476	Severn.exe
3476	Severn.exe
3476	Severn.exe
3476	Severn.exe
3476	Severn.exe
3476	Severn.exe
3476	Severn.exe
3476	Severn.exe
3476	Severn.exe
3476	Severn.exe
3476	Severn.exe
3476	Severn.exe
3476	Severn.exe
3476	Severn.exe
3476	Severn.exe
3476	Severn.exe
3476	Severn.exe
3476	Severn.exe
3476	Severn.exe
3476	Severn.exe
3476	Severn.exe
3476	Severn.exe
3476	Severn.exe
3476	Severn.exe
3476	Severn.exe
3476	Severn.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3476	Severn.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 4112 wrote to memory of 3476	4112	0dfca39c7ebcca00525b6d29fb720a32396a12716322609498528bdcf91d8715.exe	89
PID 4112 wrote to memory of 3476	4112	0dfca39c7ebcca00525b6d29fb720a32396a12716322609498528bdcf91d8715.exe	89
PID 4112 wrote to memory of 3476	4112	0dfca39c7ebcca00525b6d29fb720a32396a12716322609498528bdcf91d8715.exe	89
PID 3476 wrote to memory of 5016	3476	Severn.exe	90
PID 3476 wrote to memory of 5016	3476	Severn.exe	90
PID 3476 wrote to memory of 5016	3476	Severn.exe	90

C:\Users\Admin\AppData\Local\Temp\0dfca39c7ebcca00525b6d29fb720a32396a12716322609498528bdcf91d8715.exe
"C:\Users\Admin\AppData\Local\Temp\0dfca39c7ebcca00525b6d29fb720a32396a12716322609498528bdcf91d8715.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4112
- C:\Users\Admin\AppData\Roaming\Severn.exe
  "C:\Users\Admin\AppData\Roaming\Severn.exe"
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:3476
- - C:\Windows\SysWOW64\netsh.exe
    netsh firewall add allowedprogram "C:\Users\Admin\AppData\Roaming\Severn.exe" "Severn.exe" ENABLE
    3⤵
    - Modifies Windows Firewall
    - Event Triggered Execution: Netsh Helper DLL
    - System Location Discovery: System Language Discovery
    PID:5016

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --field-trial-handle=4380,i,11251706013556949551,5157034131170452377,262144 --variations-seed-version --mojo-platform-channel-handle=4188 /prefetch:8
1⤵
PID:2096

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\Roaming\Severn.exe

Filesize
29KB

MD5
7eeb03f03f522d069360a11605d8c36f

SHA1
c822086cc3c0aeab9940880cccec95096d3fe5a4

SHA256
0dfca39c7ebcca00525b6d29fb720a32396a12716322609498528bdcf91d8715

SHA512
1d9d9d2915c2cc53840539bf71b4d200ed3744159dbdb56a85010f12600b891b34941fecdf455886c00a4b96ccbe1c903b3db7a8842a177ba1f99ac0db442b61

Download Submit
memory/3476-13-0x0000000075520000-0x0000000075AD1000-memory.dmp

Filesize
5.7MB

Download
memory/3476-14-0x0000000075520000-0x0000000075AD1000-memory.dmp

Filesize
5.7MB

Download
memory/3476-15-0x0000000075520000-0x0000000075AD1000-memory.dmp

Filesize
5.7MB

Download
memory/4112-0-0x0000000075522000-0x0000000075523000-memory.dmp

Filesize
4KB

Download
memory/4112-1-0x0000000075520000-0x0000000075AD1000-memory.dmp

Filesize
5.7MB

Download
memory/4112-2-0x0000000075520000-0x0000000075AD1000-memory.dmp

Filesize
5.7MB

Download
memory/4112-12-0x0000000075520000-0x0000000075AD1000-memory.dmp

Filesize
5.7MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads