c725eea92437455b05cf0c4007e63abff342befc67e4b8ad0e60eaa96074955e

Analysis

max time kernel
124s
max time network
122s
platform
windows7_x64
resource
win7v200722
submitted
06/10/2020, 16:35

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General

Target
uaa.exe
Size 933KB
Sample201006-far16vp2r2
SHA256 c725eea92437455b05cf0c4007e63abff342befc67e4b8ad0e60eaa96074955e
MD5 b7aa4a355e114b63b21d0d4ed8d3d588
SHA1 593bd38d777d49a020a838a901ea91a65109f6cb
SHA512 fa0e588858d2b9facadbe549a8cde3a3b6f52ece589e07aca04ba30e3b10fafc2c1018be4575db25cc208427b025d1b0ade08834ce96b9e8e98450760d524b52
MD5 SHA1 SHA512

Score

10^/10

evasion trojan persistence spyware

Malware Config

Signatures

Modifies WinLogon for persistence 2 TTPs 1 IoCs

persistence

Winlogon Helper DLL

T1004

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-2090973689-680783404-4292415065-1000\Software\Microsoft\Windows NT\CurrentVersion\Winlogon\shell = "explorer.exe,\"C:\\Users\\Admin\\AppData\\Local\\Temp\\uaa.exe\""	uaa.exe

Modifies Windows Defender Real-time Protection settings 3 TTPs
evasion trojan

Modify Registry
T1112

Modify Existing Service
T1031

Disabling Security Tools
T1089
Windows security bypass 2 TTPs
evasion trojan

Disabling Security Tools
T1089

Modify Registry
T1112

Executes dropped EXE 2 IoCs

pid	Process
1116	AdvancedRun.exe
1536	AdvancedRun.exe

Drops startup file 2 IoCs

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

Loads dropped DLL 4 IoCs

pid	Process
1420	uaa.exe
1420	uaa.exe
1116	AdvancedRun.exe
1116	AdvancedRun.exe

Reads user/profile data of local email clients 2 TTPs
Email clients store some user data on disk where infostealers will often target it.
spyware

Data from Local System
T1005

Credentials in Files
T1081
Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware

Data from Local System
T1005

Credentials in Files
T1081

Windows security modification 2 TTPs 9 IoCs

evasion trojan

Disabling Security Tools

T1089

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows Defender\Exclusions	uaa.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows Defender\Exclusions\Paths\C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\uaa.exe = "0"	uaa.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows Defender\Real-Time Protection	uaa.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows Defender\Real-Time Protection\DisableRealtimeMonitoring = "1"	uaa.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows Defender\Features	uaa.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows Defender\Exclusions\Paths	uaa.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows Defender\Spynet\SubmitSamplesConsent = "0"	uaa.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows Defender\Features\TamperProtection = "0"	uaa.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows Defender\Exclusions\Paths\C:\Users\Admin\AppData\Local\Temp\uaa.exe = "0"	uaa.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-2090973689-680783404-4292415065-1000\Software\Microsoft\Windows\CurrentVersion\Run\<Unknown> = "C:\\Users\\Admin\\AppData\\Local\\Temp\\uaa.exe"	uaa.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2090973689-680783404-4292415065-1000\Software\Microsoft\Windows\CurrentVersion\Run\uaa.exe = "C:\\Users\\Admin\\AppData\\Local\\Temp\\uaa.exe"	uaa.exe

Legitimate hosting services abused for malware hosting/C2 1 TTPs

Web Service
T1102

Looks up external IP address via web service 2 IoCs

Uses a legitimate IP lookup service to find the infected system's external IP.

flow	ioc
9	api.ipify.org
10	api.ipify.org

Suspicious use of NtSetInformationThreadHideFromDebugger 13 IoCs

pid	Process
1420	uaa.exe
1420	uaa.exe
1420	uaa.exe
1420	uaa.exe
1420	uaa.exe
1420	uaa.exe
1420	uaa.exe
1420	uaa.exe
1420	uaa.exe
1420	uaa.exe
1420	uaa.exe
1420	uaa.exe
1420	uaa.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1420 set thread context of 1116	1420	uaa.exe	40

Program crash 1 IoCs

pid	pid_target	Process	procid_target
1912	1420	WerFault.exe	23

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
1540	timeout.exe

Suspicious behavior: EnumeratesProcesses 22 IoCs

pid	Process
1904	powershell.exe
1964	powershell.exe
1984	powershell.exe
1332	powershell.exe
1904	powershell.exe
1964	powershell.exe
1984	powershell.exe
1332	powershell.exe
1116	AdvancedRun.exe
1116	AdvancedRun.exe
1536	AdvancedRun.exe
1536	AdvancedRun.exe
1420	uaa.exe
1420	uaa.exe
1420	uaa.exe
1116	uaa.exe
1912	WerFault.exe
1912	WerFault.exe
1912	WerFault.exe
1912	WerFault.exe
1116	uaa.exe
1912	WerFault.exe

Suspicious use of AdjustPrivilegeToken 11 IoCs

description	pid	Process
Token: SeDebugPrivilege	1420	uaa.exe
Token: SeDebugPrivilege	1904	powershell.exe
Token: SeDebugPrivilege	1964	powershell.exe
Token: SeDebugPrivilege	1984	powershell.exe
Token: SeDebugPrivilege	1332	powershell.exe
Token: SeDebugPrivilege	1116	AdvancedRun.exe
Token: SeImpersonatePrivilege	1116	AdvancedRun.exe
Token: SeDebugPrivilege	1536	AdvancedRun.exe
Token: SeImpersonatePrivilege	1536	AdvancedRun.exe
Token: SeDebugPrivilege	1116	uaa.exe
Token: SeDebugPrivilege	1912	WerFault.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1116	uaa.exe

Suspicious use of WriteProcessMemory 41 IoCs

description	pid	Process	procid_target
PID 1420 wrote to memory of 1540	1420	uaa.exe	25
PID 1420 wrote to memory of 1540	1420	uaa.exe	25
PID 1420 wrote to memory of 1540	1420	uaa.exe	25
PID 1420 wrote to memory of 1540	1420	uaa.exe	25
PID 1420 wrote to memory of 1964	1420	uaa.exe	30
PID 1420 wrote to memory of 1964	1420	uaa.exe	30
PID 1420 wrote to memory of 1964	1420	uaa.exe	30
PID 1420 wrote to memory of 1964	1420	uaa.exe	30
PID 1420 wrote to memory of 1904	1420	uaa.exe	32
PID 1420 wrote to memory of 1904	1420	uaa.exe	32
PID 1420 wrote to memory of 1904	1420	uaa.exe	32
PID 1420 wrote to memory of 1904	1420	uaa.exe	32
PID 1420 wrote to memory of 1984	1420	uaa.exe	34
PID 1420 wrote to memory of 1984	1420	uaa.exe	34
PID 1420 wrote to memory of 1984	1420	uaa.exe	34
PID 1420 wrote to memory of 1984	1420	uaa.exe	34
PID 1420 wrote to memory of 1332	1420	uaa.exe	36
PID 1420 wrote to memory of 1332	1420	uaa.exe	36
PID 1420 wrote to memory of 1332	1420	uaa.exe	36
PID 1420 wrote to memory of 1332	1420	uaa.exe	36
PID 1420 wrote to memory of 1116	1420	uaa.exe	38
PID 1420 wrote to memory of 1116	1420	uaa.exe	38
PID 1420 wrote to memory of 1116	1420	uaa.exe	38
PID 1420 wrote to memory of 1116	1420	uaa.exe	38
PID 1116 wrote to memory of 1536	1116	AdvancedRun.exe	39
PID 1116 wrote to memory of 1536	1116	AdvancedRun.exe	39
PID 1116 wrote to memory of 1536	1116	AdvancedRun.exe	39
PID 1116 wrote to memory of 1536	1116	AdvancedRun.exe	39
PID 1420 wrote to memory of 1116	1420	uaa.exe	40
PID 1420 wrote to memory of 1116	1420	uaa.exe	40
PID 1420 wrote to memory of 1116	1420	uaa.exe	40
PID 1420 wrote to memory of 1116	1420	uaa.exe	40
PID 1420 wrote to memory of 1116	1420	uaa.exe	40
PID 1420 wrote to memory of 1116	1420	uaa.exe	40
PID 1420 wrote to memory of 1116	1420	uaa.exe	40
PID 1420 wrote to memory of 1116	1420	uaa.exe	40
PID 1420 wrote to memory of 1116	1420	uaa.exe	40
PID 1420 wrote to memory of 1912	1420	uaa.exe	41
PID 1420 wrote to memory of 1912	1420	uaa.exe	41
PID 1420 wrote to memory of 1912	1420	uaa.exe	41
PID 1420 wrote to memory of 1912	1420	uaa.exe	41

C:\Users\Admin\AppData\Local\Temp\uaa.exe
"C:\Users\Admin\AppData\Local\Temp\uaa.exe"
1⤵
- Modifies WinLogon for persistence
- Drops startup file
- Loads dropped DLL
- Windows security modification
- Adds Run key to start application
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1420
- C:\Windows\SysWOW64\timeout.exe
  timeout 4
  2⤵
  - Delays execution with timeout.exe
  PID:1540
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\uaa.exe" -Force
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1964
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\uaa.exe" -Force
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1904
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\uaa.exe" -Force
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1984
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Local\Temp\uaa.exe" -Force
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1332
- C:\Users\Admin\AppData\Local\Temp\95f05392-3db6-4783-9840-f4109a2cb7f1\AdvancedRun.exe
  "C:\Users\Admin\AppData\Local\Temp\95f05392-3db6-4783-9840-f4109a2cb7f1\AdvancedRun.exe" /EXEFilename "C:\Users\Admin\AppData\Local\Temp\95f05392-3db6-4783-9840-f4109a2cb7f1\test.bat" /WindowState ""0"" /PriorityClass ""32"" /CommandLine "" /StartDirectory "" /RunAs 8 /Run
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:1116
- - C:\Users\Admin\AppData\Local\Temp\95f05392-3db6-4783-9840-f4109a2cb7f1\AdvancedRun.exe
    "C:\Users\Admin\AppData\Local\Temp\95f05392-3db6-4783-9840-f4109a2cb7f1\AdvancedRun.exe" /SpecialRun 4101d8 1116
    3⤵
    - Executes dropped EXE
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:1536
- C:\Users\Admin\AppData\Local\Temp\uaa.exe
  "C:\Users\Admin\AppData\Local\Temp\uaa.exe"
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  PID:1116
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1420 -s 1984
  2⤵
  - Program crash
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1912

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Modify Existing Service

T1031

Registry Run Keys / Startup Folder

T1060

Winlogon Helper DLL

T1004

Privilege Escalation

Defense Evasion

Disabling Security Tools

T1089

Modify Registry

T1112

Web Service

T1102

Credential Access

Credentials in Files

T1081

Discovery

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Web Service

T1102

Exfiltration

Impact

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Downloads

memory/1116-89-0x0000000000400000-0x000000000043C000-memory.dmp

Download

memory/1116-92-0x0000000000400000-0x000000000043C000-memory.dmp

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memory/1116-93-0x00000000747C0000-0x0000000074EAE000-memory.dmp

Download

memory/1116-91-0x0000000000400000-0x000000000043C000-memory.dmp

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memory/1332-26-0x00000000027A0000-0x00000000027A1000-memory.dmp

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memory/1332-18-0x0000000004AA0000-0x0000000004AA1000-memory.dmp

Download

memory/1332-11-0x00000000747C0000-0x0000000074EAE000-memory.dmp

Download

memory/1420-0-0x00000000747C0000-0x0000000074EAE000-memory.dmp

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memory/1420-4-0x00000000006B0000-0x00000000006FB000-memory.dmp

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memory/1420-1-0x000000000F270000-0x000000000F271000-memory.dmp

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memory/1904-13-0x00000000747C0000-0x0000000074EAE000-memory.dmp

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memory/1912-98-0x0000000002810000-0x0000000002821000-memory.dmp

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memory/1912-97-0x0000000001F90000-0x0000000001FA1000-memory.dmp

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memory/1964-14-0x0000000002170000-0x0000000002171000-memory.dmp

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memory/1964-22-0x0000000005170000-0x0000000005171000-memory.dmp

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memory/1964-12-0x00000000747C0000-0x0000000074EAE000-memory.dmp

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memory/1984-46-0x0000000006080000-0x0000000006081000-memory.dmp

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memory/1984-41-0x0000000005FE0000-0x0000000005FE1000-memory.dmp

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memory/1984-77-0x0000000006310000-0x0000000006311000-memory.dmp

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memory/1984-10-0x00000000747C0000-0x0000000074EAE000-memory.dmp

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memory/1984-47-0x0000000006190000-0x0000000006191000-memory.dmp

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memory/1984-54-0x0000000006240000-0x0000000006241000-memory.dmp

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memory/1984-61-0x0000000005FA0000-0x0000000005FA1000-memory.dmp

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memory/1984-76-0x0000000006300000-0x0000000006301000-memory.dmp

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