8fd02983022b9f09835b9cda8b137bf9888b41dbb60bc535b7fc714840b4acbc

General

Target

8fd02983022b9f09835b9cda8b137bf9888b41dbb60bc535b7fc714840b4acbcN.exe
Size

93KB
MD5

2a48072cf35f77e231543cff655449b0
SHA1

de6a10cc189f9d8bff617c8cab750558ad761bb7
SHA256

8fd02983022b9f09835b9cda8b137bf9888b41dbb60bc535b7fc714840b4acbc
SHA512

55175819ae7ba6e2b89d4f9ed1b0d0aa0e976237f44a4a38136c50942e37432c8b7f69efc43aa2814780fe3bfe2fb276f4f13c2a14a5a6916198813e70eae342
SSDEEP

768:VY3WCnD9O/pBcxYsbae6GIXb9pDX2t98PL0OXLeuXxrjEtCdnl2pi1Rz4Rk3SsG6:ZCxOx6baIa9RZj00ljEwzGi1dDuDsgS

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
2596	netsh.exe

Drops startup file 6 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\4da57d41dfd99d8577619c79d0e4470aWindows Update.exe	server.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\4da57d41dfd99d8577619c79d0e4470aWindows Update.exe	server.exe
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Explower.exe	server.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Explower.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
2744	server.exe

Loads dropped DLL 2 IoCs

pid	Process
2848	8fd02983022b9f09835b9cda8b137bf9888b41dbb60bc535b7fc714840b4acbcN.exe
2848	8fd02983022b9f09835b9cda8b137bf9888b41dbb60bc535b7fc714840b4acbcN.exe

Drops autorun.inf file 1 TTPs 4 IoCs

Malware can abuse Windows Autorun to spread further via attached volumes.

Replication Through Removable Media

T1091

description	ioc	Process
File created	C:\autorun.inf	server.exe
File opened for modification	C:\autorun.inf	server.exe
File created	F:\autorun.inf	server.exe
File opened for modification	F:\autorun.inf	server.exe

Drops file in System32 directory 2 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\Explower.exe	server.exe
File opened for modification	C:\Windows\SysWOW64\Explower.exe	server.exe

Drops file in Program Files directory 2 IoCs

description	ioc	Process
File created	C:\Program Files (x86)\Explower.exe	server.exe
File opened for modification	C:\Program Files (x86)\Explower.exe	server.exe

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	8fd02983022b9f09835b9cda8b137bf9888b41dbb60bc535b7fc714840b4acbcN.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: GetForegroundWindowSpam 1 IoCs

pid	Process
2744	server.exe

Suspicious use of AdjustPrivilegeToken 29 IoCs

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

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 2848 wrote to memory of 2744	2848	8fd02983022b9f09835b9cda8b137bf9888b41dbb60bc535b7fc714840b4acbcN.exe	30
PID 2848 wrote to memory of 2744	2848	8fd02983022b9f09835b9cda8b137bf9888b41dbb60bc535b7fc714840b4acbcN.exe	30
PID 2848 wrote to memory of 2744	2848	8fd02983022b9f09835b9cda8b137bf9888b41dbb60bc535b7fc714840b4acbcN.exe	30
PID 2848 wrote to memory of 2744	2848	8fd02983022b9f09835b9cda8b137bf9888b41dbb60bc535b7fc714840b4acbcN.exe	30
PID 2744 wrote to memory of 2596	2744	server.exe	31
PID 2744 wrote to memory of 2596	2744	server.exe	31
PID 2744 wrote to memory of 2596	2744	server.exe	31
PID 2744 wrote to memory of 2596	2744	server.exe	31

C:\Users\Admin\AppData\Local\Temp\8fd02983022b9f09835b9cda8b137bf9888b41dbb60bc535b7fc714840b4acbcN.exe
"C:\Users\Admin\AppData\Local\Temp\8fd02983022b9f09835b9cda8b137bf9888b41dbb60bc535b7fc714840b4acbcN.exe"
1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2848
- C:\Users\Admin\AppData\Local\Temp\server.exe
  "C:\Users\Admin\AppData\Local\Temp\server.exe"
  2⤵
  - Drops startup file
  - Executes dropped EXE
  - Drops autorun.inf file
  - Drops file in System32 directory
  - Drops file in Program Files directory
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: GetForegroundWindowSpam
  - 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\server.exe" "server.exe" ENABLE
    3⤵
    - Modifies Windows Firewall
    - Event Triggered Execution: Netsh Helper DLL
    - System Location Discovery: System Language Discovery
    PID:2596

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Replication Through Removable Media

1

T1091

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

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Replication Through Removable Media

1

T1091

Collection

Command and Control

Exfiltration

Impact

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Downloads

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

Filesize
93KB

MD5
2a48072cf35f77e231543cff655449b0

SHA1
de6a10cc189f9d8bff617c8cab750558ad761bb7

SHA256
8fd02983022b9f09835b9cda8b137bf9888b41dbb60bc535b7fc714840b4acbc

SHA512
55175819ae7ba6e2b89d4f9ed1b0d0aa0e976237f44a4a38136c50942e37432c8b7f69efc43aa2814780fe3bfe2fb276f4f13c2a14a5a6916198813e70eae342

Download Submit
C:\Users\Admin\AppData\Roaming\app

Filesize
5B

MD5
b66e20886f9675fe4dbf430ea2d0bf8d

SHA1
2e676da72201e6e4482e00b300511900c6aee5a0

SHA256
899a421c56c18058cbdd16dd7fb313a57d36c1189ca0f442070ed01d17241414

SHA512
f431616522f775de27ccde420f0de6f8b3477fbe97cfd8001864b8289a570916a6dd32c84fcf8af6083d8c1b47c61aa5c73ed1e7cc75213d3f24bd94a93cb870

Download Submit
memory/2744-15-0x0000000074240000-0x00000000747EB000-memory.dmp

Filesize
5.7MB

Download
memory/2744-16-0x0000000074240000-0x00000000747EB000-memory.dmp

Filesize
5.7MB

Download
memory/2744-17-0x0000000074240000-0x00000000747EB000-memory.dmp

Filesize
5.7MB

Download
memory/2744-53-0x0000000074240000-0x00000000747EB000-memory.dmp

Filesize
5.7MB

Download
memory/2848-0-0x0000000074241000-0x0000000074242000-memory.dmp

Filesize
4KB

Download
memory/2848-1-0x0000000074240000-0x00000000747EB000-memory.dmp

Filesize
5.7MB

Download
memory/2848-2-0x0000000074240000-0x00000000747EB000-memory.dmp

Filesize
5.7MB

Download
memory/2848-14-0x0000000074240000-0x00000000747EB000-memory.dmp

Filesize
5.7MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads