46dc49be65d7165e2a6009854a4f27f0088230199e61e0555cb1bd266535874a

Analysis

max time kernel
128s
max time network
42s
platform
windows7_x64
resource
win7v200722
submitted
11-08-2020 12:30

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General

Target

foo/39e5310f67f0b1bf98604a2e0edb9204.exe

Score

10^/10

evasion persistence trojan

Malware Config

Signatures

UAC bypass 3 TTPs
evasion trojan

Bypass User Account Control
T1088

Disabling Security Tools
T1089

Modify Registry
T1112
Windows security bypass 2 TTPs
evasion trojan

Disabling Security Tools
T1089

Modify Registry
T1112
Disables Task Manager via registry modification
evasion
Modifies Windows Firewall 1 TTPs
evasion

Modify Existing Service
T1031

Windows security modification 2 TTPs 1 IoCs

evasion trojan

Disabling Security Tools

T1089

Modify Registry

T1112

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\UACDisableNotify = "0"	39e5310f67f0b1bf98604a2e0edb9204.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\MACHINE\Software\Wow6432Node\Microsoft\Windows\CurrentVersion\Run	39e5310f67f0b1bf98604a2e0edb9204.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\Server.exe = "C:\\Users\\Admin\\AppData\\Roaming\\Server.exe"	39e5310f67f0b1bf98604a2e0edb9204.exe

Checks whether UAC is enabled 1 TTPs 1 IoCs

evasion trojan

System Information Discovery

T1082

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	39e5310f67f0b1bf98604a2e0edb9204.exe

Runs net.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
1856	39e5310f67f0b1bf98604a2e0edb9204.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeBackupPrivilege	1856	39e5310f67f0b1bf98604a2e0edb9204.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1856	39e5310f67f0b1bf98604a2e0edb9204.exe

Suspicious use of WriteProcessMemory 20 IoCs

description	pid	Process	procid_target
PID 1856 wrote to memory of 1880	1856	39e5310f67f0b1bf98604a2e0edb9204.exe	26
PID 1856 wrote to memory of 1880	1856	39e5310f67f0b1bf98604a2e0edb9204.exe	26
PID 1856 wrote to memory of 1880	1856	39e5310f67f0b1bf98604a2e0edb9204.exe	26
PID 1856 wrote to memory of 1880	1856	39e5310f67f0b1bf98604a2e0edb9204.exe	26
PID 1856 wrote to memory of 1736	1856	39e5310f67f0b1bf98604a2e0edb9204.exe	28
PID 1856 wrote to memory of 1736	1856	39e5310f67f0b1bf98604a2e0edb9204.exe	28
PID 1856 wrote to memory of 1736	1856	39e5310f67f0b1bf98604a2e0edb9204.exe	28
PID 1856 wrote to memory of 1736	1856	39e5310f67f0b1bf98604a2e0edb9204.exe	28
PID 1856 wrote to memory of 1912	1856	39e5310f67f0b1bf98604a2e0edb9204.exe	30
PID 1856 wrote to memory of 1912	1856	39e5310f67f0b1bf98604a2e0edb9204.exe	30
PID 1856 wrote to memory of 1912	1856	39e5310f67f0b1bf98604a2e0edb9204.exe	30
PID 1856 wrote to memory of 1912	1856	39e5310f67f0b1bf98604a2e0edb9204.exe	30
PID 1912 wrote to memory of 268	1912	net.exe	32
PID 1912 wrote to memory of 268	1912	net.exe	32
PID 1912 wrote to memory of 268	1912	net.exe	32
PID 1912 wrote to memory of 268	1912	net.exe	32
PID 1736 wrote to memory of 572	1736	net.exe	33
PID 1736 wrote to memory of 572	1736	net.exe	33
PID 1736 wrote to memory of 572	1736	net.exe	33
PID 1736 wrote to memory of 572	1736	net.exe	33

System policy modification 1 TTPs 1 IoCs

evasion

Modify Registry

T1112

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	39e5310f67f0b1bf98604a2e0edb9204.exe

C:\Users\Admin\AppData\Local\Temp\foo\39e5310f67f0b1bf98604a2e0edb9204.exe
"C:\Users\Admin\AppData\Local\Temp\foo\39e5310f67f0b1bf98604a2e0edb9204.exe"
1⤵
- Windows security modification
- Adds Run key to start application
- Checks whether UAC is enabled
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
- System policy modification
PID:1856
- C:\Windows\SysWOW64\netsh.exe
  netsh firewall set opmode disable
  2⤵
  PID:1880
- C:\Windows\SysWOW64\net.exe
  net stop security center
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1736
- - C:\Windows\SysWOW64\net1.exe
    C:\Windows\system32\net1 stop security center
    3⤵
    PID:572
- C:\Windows\SysWOW64\net.exe
  net stop WinDefend
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1912
- - C:\Windows\SysWOW64\net1.exe
    C:\Windows\system32\net1 stop WinDefend
    3⤵
    PID:268

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Modify Existing Service

T1031

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

Bypass User Account Control

T1088

Defense Evasion

Bypass User Account Control

T1088

Disabling Security Tools

T1089

Modify Registry

T1112

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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