c7ddec717bda7e1ef135d2815a795df62157cd14f1ac45c44c91868ae72c80d4

General

Target

Update.exe
Size

48KB
MD5

a6fed209276015af14b2f088d52282af
SHA1

7ee00d72c43b4f6720340637b2773e88664a1b70
SHA256

c7ddec717bda7e1ef135d2815a795df62157cd14f1ac45c44c91868ae72c80d4
SHA512

b7f0d9279c556e58063ee768c078fec87993596463f5006fd7510527a49b3d598584ebaf6d9894340313d46961cbfbb09a0c7ed9c86c5d7348a791d4f5817f9a
SSDEEP

768:dzvN+xBNneQbxS59ilnp/D2vGFI590TRXZ66QDY/X9u0hcb4yU:tV+xBNneQbxS0p/6vGFrKY/Xg8cb4y

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
2812	netsh.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\System32.exe	Update.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\System32.exe	Update.exe

Executes dropped EXE 1 IoCs

pid	Process
3012	Update.exe

Adds Run key to start application 2 TTPs 7 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-2420732851-834218046-3184189440-1000\Software\Microsoft\Windows\CurrentVersion\Run\System32 = "\"C:\\Users\\Admin\\AppData\\Roaming\\Update.exe\" .."	Update.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\System32 = "\"C:\\Users\\Admin\\AppData\\Roaming\\Update.exe\" .."	Update.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\System32 = "C:\\Users\\Admin\\AppData\\Roaming\\Microsoft\\Windows\\Templates\\explorer\\WmiPrvSE.exe"	Update.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2420732851-834218046-3184189440-1000\Software\Microsoft\Windows\CurrentVersion\Run\System32 = "C:\\Users\\Admin\\AppData\\Roaming\\Update.exe"	Update.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\System32 = "C:\\Users\\Admin\\AppData\\Roaming\\Update.exe"	Update.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\53$79$73$74$65$6d$33$32 = "C:\\Users\\Admin\\AppData\\Roaming\\Microsoft\\Windows\\Templates\\explorer\\WmiPrvSE.exe"	Update.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\53$79$73$74$65$6d$33$32 = "C:\\Users\\Admin\\AppData\\Roaming\\Microsoft\\Windows\\Templates\\explorer\\WmiPrvSE.exe"	Update.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	Update.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Update.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe

Suspicious use of AdjustPrivilegeToken 5 IoCs

description	pid	Process
Token: SeDebugPrivilege	3012	Update.exe
Token: 33	3012	Update.exe
Token: SeIncBasePriorityPrivilege	3012	Update.exe
Token: 33	3012	Update.exe
Token: SeIncBasePriorityPrivilege	3012	Update.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 1596 wrote to memory of 3012	1596	Update.exe	94
PID 1596 wrote to memory of 3012	1596	Update.exe	94
PID 1596 wrote to memory of 3012	1596	Update.exe	94
PID 3012 wrote to memory of 2812	3012	Update.exe	95
PID 3012 wrote to memory of 2812	3012	Update.exe	95
PID 3012 wrote to memory of 2812	3012	Update.exe	95

C:\Users\Admin\AppData\Local\Temp\Update.exe
"C:\Users\Admin\AppData\Local\Temp\Update.exe"
1⤵
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1596
- C:\Users\Admin\AppData\Roaming\Update.exe
  "C:\Users\Admin\AppData\Roaming\Update.exe"
  2⤵
  - Drops startup file
  - Executes dropped EXE
  - Adds Run key to start application
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:3012
- - C:\Windows\SysWOW64\netsh.exe
    netsh firewall add allowedprogram "C:\Users\Admin\AppData\Roaming\Update.exe" "Update.exe" ENABLE
    3⤵
    - Modifies Windows Firewall
    - Event Triggered Execution: Netsh Helper DLL
    - System Location Discovery: System Language Discovery
    PID:2812

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 --string-annotations --always-read-main-dll --field-trial-handle=4932,i,1678230212308367374,16198277103294615511,262144 --variations-seed-version --mojo-platform-channel-handle=4156 /prefetch:14
1⤵
PID:4240

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

System Information Discovery

1

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\Microsoft\CLR_v2.0_32\UsageLogs\Update.exe.log

Filesize
411B

MD5
3dc9dbdea7b64d1aa174f0b7d9bf82af

SHA1
41f5ed46b506cabe02a1ed03ad4f958b3d577a22

SHA256
354df334b9a390263e437b524f42d1c4bf22ce0b7a2e8757f852742702d970b4

SHA512
edf8682d01a03ac6bc9aaa4dafcc304fbcfd313de0974df33105c5a917e792c4a3927a98c9a1d34e97c3212d90ce933e0b7a20f27c94b5093688543be400d9e9

Download Submit
C:\Users\Admin\AppData\Roaming\Update.exe

Filesize
48KB

MD5
a6fed209276015af14b2f088d52282af

SHA1
7ee00d72c43b4f6720340637b2773e88664a1b70

SHA256
c7ddec717bda7e1ef135d2815a795df62157cd14f1ac45c44c91868ae72c80d4

SHA512
b7f0d9279c556e58063ee768c078fec87993596463f5006fd7510527a49b3d598584ebaf6d9894340313d46961cbfbb09a0c7ed9c86c5d7348a791d4f5817f9a

Download Submit
memory/1596-0-0x00000000747C1000-0x00000000747C2000-memory.dmp

Filesize
4KB

Download
memory/1596-1-0x00000000747C0000-0x0000000074D71000-memory.dmp

Filesize
5.7MB

Download
memory/1596-2-0x00000000747C0000-0x0000000074D71000-memory.dmp

Filesize
5.7MB

Download
memory/1596-13-0x00000000747C0000-0x0000000074D71000-memory.dmp

Filesize
5.7MB

Download
memory/3012-14-0x00000000747C0000-0x0000000074D71000-memory.dmp

Filesize
5.7MB

Download
memory/3012-15-0x00000000747C0000-0x0000000074D71000-memory.dmp

Filesize
5.7MB

Download
memory/3012-19-0x00000000747C0000-0x0000000074D71000-memory.dmp

Filesize
5.7MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads