c725eea92437455b05cf0c4007e63abff342befc67e4b8ad0e60eaa96074955e

Analysis

max time kernel
104s
max time network
110s
platform
windows10_x64
resource
win10
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

spyware persistence evasion trojan

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-1-5-21-2066881839-3229799743-3576549721-1000\Software\Microsoft\Windows NT\CurrentVersion\Winlogon\shell = "explorer.exe,\"C:\\Users\\Admin\\AppData\\Local\\Temp\\uaa.exe\""	uaa.exe

Turns off Windows Defender SpyNet reporting 2 TTPs
evasion

Disabling Security Tools
T1089

Modify Registry
T1112
Windows security bypass 2 TTPs
evasion trojan

Disabling Security Tools
T1089

Modify Registry
T1112

Executes dropped EXE 2 IoCs

pid	Process
348	AdvancedRun.exe
552	AdvancedRun.exe

Drops startup file 2 IoCs

description	ioc	Process
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\uaa.exe	uaa.exe
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\uaa.exe	uaa.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 11 IoCs

evasion trojan

Disabling Security Tools

T1089

Modify Registry

T1112

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows Defender\Exclusions\Paths\C:\Users\Admin\AppData\Local\Temp\uaa.exe = "0"	uaa.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows Defender\Spynet\SpyNetReporting = "0"	uaa.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows Defender\Features	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\Spynet	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
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows Defender\Exclusions\Paths	uaa.exe
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

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-1-5-21-2066881839-3229799743-3576549721-1000\Software\Microsoft\Windows\CurrentVersion\Run\<Unknown> = "C:\\Users\\Admin\\AppData\\Local\\Temp\\uaa.exe"	uaa.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2066881839-3229799743-3576549721-1000\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
15	api.ipify.org
16	api.ipify.org

Suspicious use of NtSetInformationThreadHideFromDebugger 14 IoCs

pid	Process
2728	uaa.exe
2728	uaa.exe
2728	uaa.exe
2728	uaa.exe
2728	uaa.exe
2728	uaa.exe
2728	uaa.exe
2728	uaa.exe
2728	uaa.exe
2728	uaa.exe
2728	uaa.exe
2728	uaa.exe
2728	uaa.exe
2728	uaa.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2728 set thread context of 200	2728	uaa.exe	89

Drops file in Windows directory 1 IoCs

description	ioc	Process
File created	C:\Windows\AppCompat\Programs\Amcache.hve.tmp	WerFault.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
2420	2728	WerFault.exe	66

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
496	timeout.exe

Suspicious behavior: EnumeratesProcesses 41 IoCs

pid	Process
1664	powershell.exe
1384	powershell.exe
1568	powershell.exe
2488	powershell.exe
348	AdvancedRun.exe
348	AdvancedRun.exe
348	AdvancedRun.exe
348	AdvancedRun.exe
1664	powershell.exe
1384	powershell.exe
552	AdvancedRun.exe
552	AdvancedRun.exe
552	AdvancedRun.exe
552	AdvancedRun.exe
1568	powershell.exe
2488	powershell.exe
1664	powershell.exe
1384	powershell.exe
1568	powershell.exe
2488	powershell.exe
2728	uaa.exe
2728	uaa.exe
2728	uaa.exe
200	uaa.exe
200	uaa.exe
2420	WerFault.exe
2420	WerFault.exe
2420	WerFault.exe
2420	WerFault.exe
2420	WerFault.exe
2420	WerFault.exe
2420	WerFault.exe
2420	WerFault.exe
2420	WerFault.exe
2420	WerFault.exe
2420	WerFault.exe
2420	WerFault.exe
2420	WerFault.exe
2420	WerFault.exe
2420	WerFault.exe
2420	WerFault.exe

Suspicious use of AdjustPrivilegeToken 14 IoCs

description	pid	Process
Token: SeDebugPrivilege	2728	uaa.exe
Token: SeDebugPrivilege	1384	powershell.exe
Token: SeDebugPrivilege	1664	powershell.exe
Token: SeDebugPrivilege	1568	powershell.exe
Token: SeDebugPrivilege	2488	powershell.exe
Token: SeDebugPrivilege	348	AdvancedRun.exe
Token: SeImpersonatePrivilege	348	AdvancedRun.exe
Token: SeDebugPrivilege	552	AdvancedRun.exe
Token: SeImpersonatePrivilege	552	AdvancedRun.exe
Token: SeDebugPrivilege	200	uaa.exe
Token: SeRestorePrivilege	2420	WerFault.exe
Token: SeBackupPrivilege	2420	WerFault.exe
Token: SeBackupPrivilege	2420	WerFault.exe
Token: SeDebugPrivilege	2420	WerFault.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
200	uaa.exe

Suspicious use of WriteProcessMemory 29 IoCs

description	pid	Process	procid_target
PID 2728 wrote to memory of 496	2728	uaa.exe	73
PID 2728 wrote to memory of 496	2728	uaa.exe	73
PID 2728 wrote to memory of 496	2728	uaa.exe	73
PID 2728 wrote to memory of 1384	2728	uaa.exe	78
PID 2728 wrote to memory of 1384	2728	uaa.exe	78
PID 2728 wrote to memory of 1384	2728	uaa.exe	78
PID 2728 wrote to memory of 1664	2728	uaa.exe	80
PID 2728 wrote to memory of 1664	2728	uaa.exe	80
PID 2728 wrote to memory of 1664	2728	uaa.exe	80
PID 2728 wrote to memory of 1568	2728	uaa.exe	82
PID 2728 wrote to memory of 1568	2728	uaa.exe	82
PID 2728 wrote to memory of 1568	2728	uaa.exe	82
PID 2728 wrote to memory of 2488	2728	uaa.exe	84
PID 2728 wrote to memory of 2488	2728	uaa.exe	84
PID 2728 wrote to memory of 2488	2728	uaa.exe	84
PID 2728 wrote to memory of 348	2728	uaa.exe	86
PID 2728 wrote to memory of 348	2728	uaa.exe	86
PID 2728 wrote to memory of 348	2728	uaa.exe	86
PID 348 wrote to memory of 552	348	AdvancedRun.exe	87
PID 348 wrote to memory of 552	348	AdvancedRun.exe	87
PID 348 wrote to memory of 552	348	AdvancedRun.exe	87
PID 2728 wrote to memory of 200	2728	uaa.exe	89
PID 2728 wrote to memory of 200	2728	uaa.exe	89
PID 2728 wrote to memory of 200	2728	uaa.exe	89
PID 2728 wrote to memory of 200	2728	uaa.exe	89
PID 2728 wrote to memory of 200	2728	uaa.exe	89
PID 2728 wrote to memory of 200	2728	uaa.exe	89
PID 2728 wrote to memory of 200	2728	uaa.exe	89
PID 2728 wrote to memory of 200	2728	uaa.exe	89

C:\Users\Admin\AppData\Local\Temp\uaa.exe
"C:\Users\Admin\AppData\Local\Temp\uaa.exe"
1⤵
- Modifies WinLogon for persistence
- Drops startup file
- 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:2728
- C:\Windows\SysWOW64\timeout.exe
  timeout 4
  2⤵
  - Delays execution with timeout.exe
  PID:496
- 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:1384
- 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:1664
- 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:1568
- 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:2488
- C:\Users\Admin\AppData\Local\Temp\66364855-9621-4d41-96fd-e4035c5055b6\AdvancedRun.exe
  "C:\Users\Admin\AppData\Local\Temp\66364855-9621-4d41-96fd-e4035c5055b6\AdvancedRun.exe" /EXEFilename "C:\Users\Admin\AppData\Local\Temp\66364855-9621-4d41-96fd-e4035c5055b6\test.bat" /WindowState ""0"" /PriorityClass ""32"" /CommandLine "" /StartDirectory "" /RunAs 8 /Run
  2⤵
  - Executes dropped EXE
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:348
- - C:\Users\Admin\AppData\Local\Temp\66364855-9621-4d41-96fd-e4035c5055b6\AdvancedRun.exe
    "C:\Users\Admin\AppData\Local\Temp\66364855-9621-4d41-96fd-e4035c5055b6\AdvancedRun.exe" /SpecialRun 4101d8 348
    3⤵
    - Executes dropped EXE
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:552
- 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:200
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2728 -s 2336
  2⤵
  - Drops file in Windows directory
  - Program crash
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2420

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

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/200-102-0x0000000073B10000-0x00000000741FE000-memory.dmp

Download

memory/200-133-0x00000000062C0000-0x00000000062C1000-memory.dmp

Download

memory/200-99-0x0000000000400000-0x000000000043C000-memory.dmp

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memory/200-130-0x0000000005380000-0x0000000005381000-memory.dmp

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memory/200-132-0x00000000062E0000-0x00000000062E1000-memory.dmp

Download

memory/1384-12-0x0000000002BF0000-0x0000000002BF1000-memory.dmp

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memory/1384-14-0x0000000007210000-0x0000000007211000-memory.dmp

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memory/1384-76-0x0000000008D20000-0x0000000008D21000-memory.dmp

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memory/1384-10-0x0000000073B10000-0x00000000741FE000-memory.dmp

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memory/1384-80-0x0000000009070000-0x0000000009071000-memory.dmp

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memory/1568-117-0x00000000091B0000-0x00000000091B1000-memory.dmp

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memory/1568-109-0x00000000091C0000-0x00000000091C1000-memory.dmp

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memory/1568-16-0x0000000073B10000-0x00000000741FE000-memory.dmp

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memory/1568-96-0x0000000009210000-0x0000000009211000-memory.dmp

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memory/1664-45-0x00000000085C0000-0x00000000085C1000-memory.dmp

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memory/1664-23-0x0000000007690000-0x0000000007691000-memory.dmp

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memory/1664-49-0x0000000008870000-0x0000000008871000-memory.dmp

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memory/1664-44-0x0000000007F00000-0x0000000007F01000-memory.dmp

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memory/1664-13-0x0000000073B10000-0x00000000741FE000-memory.dmp

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memory/1664-32-0x00000000081F0000-0x00000000081F1000-memory.dmp

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memory/1664-58-0x00000000097D0000-0x0000000009803000-memory.dmp

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memory/1664-26-0x00000000080A0000-0x00000000080A1000-memory.dmp

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memory/1664-28-0x0000000008180000-0x0000000008181000-memory.dmp

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memory/2420-108-0x0000000004AD0000-0x0000000004AD1000-memory.dmp

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memory/2420-107-0x0000000004610000-0x0000000004611000-memory.dmp

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memory/2488-20-0x0000000073B10000-0x00000000741FE000-memory.dmp

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memory/2728-5-0x00000000050B0000-0x00000000050FB000-memory.dmp

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memory/2728-0-0x0000000073B10000-0x00000000741FE000-memory.dmp

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memory/2728-3-0x0000000004F10000-0x0000000004F11000-memory.dmp

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memory/2728-1-0x0000000000630000-0x0000000000631000-memory.dmp

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memory/2728-6-0x0000000006020000-0x0000000006021000-memory.dmp

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