b855fb58cec2d7b4d03058e0cedcbf9620c32d7f7c36c4e1f5434a22050c03ab

General

Target

b855fb58cec2d7b4d03058e0cedcbf9620c32d7f7c36c4e1f5434a22050c03ab.exe
Size

28KB
MD5

11e6d9c90a45a94d169ebd56d3d7715c
SHA1

6e8d3c2c5d6af1dffd905fc66e87a1f837653cc2
SHA256

b855fb58cec2d7b4d03058e0cedcbf9620c32d7f7c36c4e1f5434a22050c03ab
SHA512

2934b48dcdf665983d0943c1d5ba2c2eb3733a9e304cb63cf92ad1f59f6b83e6cf579c3931392fefd654fee1a002bbdf6e3b1964f8ff234692a3eb45f7778bbb
SSDEEP

384:hSSdBLFQTe5UvJwuZMeIGMnotlPaXjqxt0LE2wVGRbiNrxw8L7vnJSXt+jb:htyTeEwuvHtl0+D0LeVUbSQ9+n

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
4100	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	b855fb58cec2d7b4d03058e0cedcbf9620c32d7f7c36c4e1f5434a22050c03ab.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\d04a40ea34cce618c3fd88a00426398d.exe	SERVER.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\d04a40ea34cce618c3fd88a00426398d.exe	SERVER.exe

Executes dropped EXE 1 IoCs

pid	Process
2444	SERVER.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\d04a40ea34cce618c3fd88a00426398d = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\SERVER.exe\" .."	SERVER.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2170637797-568393320-3232933035-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\d04a40ea34cce618c3fd88a00426398d = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\SERVER.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	b855fb58cec2d7b4d03058e0cedcbf9620c32d7f7c36c4e1f5434a22050c03ab.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	SERVER.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe

Suspicious behavior: EnumeratesProcesses 48 IoCs

pid	Process
2444	SERVER.exe
2444	SERVER.exe
2444	SERVER.exe
2444	SERVER.exe
2444	SERVER.exe
2444	SERVER.exe
2444	SERVER.exe
2444	SERVER.exe
2444	SERVER.exe
2444	SERVER.exe
2444	SERVER.exe
2444	SERVER.exe
2444	SERVER.exe
2444	SERVER.exe
2444	SERVER.exe
2444	SERVER.exe
2444	SERVER.exe
2444	SERVER.exe
2444	SERVER.exe
2444	SERVER.exe
2444	SERVER.exe
2444	SERVER.exe
2444	SERVER.exe
2444	SERVER.exe
2444	SERVER.exe
2444	SERVER.exe
2444	SERVER.exe
2444	SERVER.exe
2444	SERVER.exe
2444	SERVER.exe
2444	SERVER.exe
2444	SERVER.exe
2444	SERVER.exe
2444	SERVER.exe
2444	SERVER.exe
2444	SERVER.exe
2444	SERVER.exe
2444	SERVER.exe
2444	SERVER.exe
2444	SERVER.exe
2444	SERVER.exe
2444	SERVER.exe
2444	SERVER.exe
2444	SERVER.exe
2444	SERVER.exe
2444	SERVER.exe
2444	SERVER.exe
2444	SERVER.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2444	SERVER.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 1376 wrote to memory of 2444	1376	b855fb58cec2d7b4d03058e0cedcbf9620c32d7f7c36c4e1f5434a22050c03ab.exe	89
PID 1376 wrote to memory of 2444	1376	b855fb58cec2d7b4d03058e0cedcbf9620c32d7f7c36c4e1f5434a22050c03ab.exe	89
PID 1376 wrote to memory of 2444	1376	b855fb58cec2d7b4d03058e0cedcbf9620c32d7f7c36c4e1f5434a22050c03ab.exe	89
PID 2444 wrote to memory of 4100	2444	SERVER.exe	90
PID 2444 wrote to memory of 4100	2444	SERVER.exe	90
PID 2444 wrote to memory of 4100	2444	SERVER.exe	90

C:\Users\Admin\AppData\Local\Temp\b855fb58cec2d7b4d03058e0cedcbf9620c32d7f7c36c4e1f5434a22050c03ab.exe
"C:\Users\Admin\AppData\Local\Temp\b855fb58cec2d7b4d03058e0cedcbf9620c32d7f7c36c4e1f5434a22050c03ab.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1376
- C:\Users\Admin\AppData\Local\Temp\SERVER.exe
  "C:\Users\Admin\AppData\Local\Temp\SERVER.exe"
  2⤵
  - Drops startup file
  - Executes dropped EXE
  - Adds Run key to start application
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2444
- - 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:4100

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=4412,i,1602949858158667699,12464335823361976127,262144 --variations-seed-version --mojo-platform-channel-handle=4448 /prefetch:8
1⤵
PID:3152

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

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

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

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

Modify Registry

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\SERVER.exe

Filesize
28KB

MD5
11e6d9c90a45a94d169ebd56d3d7715c

SHA1
6e8d3c2c5d6af1dffd905fc66e87a1f837653cc2

SHA256
b855fb58cec2d7b4d03058e0cedcbf9620c32d7f7c36c4e1f5434a22050c03ab

SHA512
2934b48dcdf665983d0943c1d5ba2c2eb3733a9e304cb63cf92ad1f59f6b83e6cf579c3931392fefd654fee1a002bbdf6e3b1964f8ff234692a3eb45f7778bbb

Download Submit
memory/1376-0-0x0000000075442000-0x0000000075443000-memory.dmp

Filesize
4KB

Download
memory/1376-1-0x0000000075440000-0x00000000759F1000-memory.dmp

Filesize
5.7MB

Download
memory/1376-2-0x0000000075440000-0x00000000759F1000-memory.dmp

Filesize
5.7MB

Download
memory/1376-13-0x0000000075440000-0x00000000759F1000-memory.dmp

Filesize
5.7MB

Download
memory/2444-12-0x0000000075440000-0x00000000759F1000-memory.dmp

Filesize
5.7MB

Download
memory/2444-15-0x0000000075440000-0x00000000759F1000-memory.dmp

Filesize
5.7MB

Download
memory/2444-14-0x0000000075440000-0x00000000759F1000-memory.dmp

Filesize
5.7MB

Download
memory/2444-17-0x0000000075440000-0x00000000759F1000-memory.dmp

Filesize
5.7MB

Download
memory/2444-18-0x0000000075440000-0x00000000759F1000-memory.dmp

Filesize
5.7MB

Download
memory/2444-19-0x0000000075440000-0x00000000759F1000-memory.dmp

Filesize
5.7MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads