xpertrat | 467693bbef8580dd6eab668a628d44e94548710be1cc60799f8e17df8c63f88a

General

Target

gunzipped.exe
Size

424KB
MD5

4f5e20c314951e30f5ca01a71559a62c
SHA1

8910f34119c522fed7dee3f545ed7aa67396baec
SHA256

467693bbef8580dd6eab668a628d44e94548710be1cc60799f8e17df8c63f88a
SHA512

e39657f0dbab0cf9056e41d753e8c26e83b4d2b23cafedbb3652e588bf248f538c1fa1ed6017c4cee5bfde8304cb6d1b521bc12191547321195f0578e160f012

Score

10^/10

xpertrat collection evasion persistence rat 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
XpertRAT
XpertRAT is a remote access trojan with various capabilities.
rat xpertrat

Adds policy Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

iexplore.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\run	iexplore.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\run\J3S7K4V2-L8C6-M6Q5-Y5I3-V6L7F1Y2X5G0 = "C:\\Users\\Admin\\AppData\\Roaming\\J3S7K4V2-L8C6-M6Q5-Y5I3-V6L7F1Y2X5G0\\J3S7K4V2-L8C6-M6Q5-Y5I3-V6L7F1Y2X5G0.exe"	iexplore.exe

Windows security modification 2 TTPs 1 IoCs
evasion trojan

Disabling Security Tools
T1089

Modify Registry
T1112

Processes:

gunzipped.exe

description ioc process

Set value (int) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\UACDisableNotify = "0" gunzipped.exe

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

Accesses Microsoft Outlook accounts 1 TTPs 1 IoCs

collection

Email Collection

T1114

Processes:

iexplore.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-3846991908-3261386348-1409841751-1000\Software\Microsoft\Office\Outlook\OMI Account Manager\Accounts	iexplore.exe

Adds Run key to start application 2 TTPs 4 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

iexplore.exe

description	ioc	process
Key created	\REGISTRY\USER\S-1-5-21-3846991908-3261386348-1409841751-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3846991908-3261386348-1409841751-1000\Software\Microsoft\Windows\CurrentVersion\Run\J3S7K4V2-L8C6-M6Q5-Y5I3-V6L7F1Y2X5G0 = "C:\\Users\\Admin\\AppData\\Roaming\\J3S7K4V2-L8C6-M6Q5-Y5I3-V6L7F1Y2X5G0\\J3S7K4V2-L8C6-M6Q5-Y5I3-V6L7F1Y2X5G0.exe"	iexplore.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run	iexplore.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\J3S7K4V2-L8C6-M6Q5-Y5I3-V6L7F1Y2X5G0 = "C:\\Users\\Admin\\AppData\\Roaming\\J3S7K4V2-L8C6-M6Q5-Y5I3-V6L7F1Y2X5G0\\J3S7K4V2-L8C6-M6Q5-Y5I3-V6L7F1Y2X5G0.exe"	iexplore.exe

Checks whether UAC is enabled 1 TTPs 1 IoCs
evasion trojan

System Information Discovery
T1082

Processes:

gunzipped.exe

description ioc process

Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0" gunzipped.exe

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

Suspicious use of SetThreadContext 7 IoCs

Processes:

gunzipped.exegunzipped.exeiexplore.exe

description	pid	process	target process
PID 1904 set thread context of 872	1904	gunzipped.exe	gunzipped.exe
PID 872 set thread context of 1236	872	gunzipped.exe	iexplore.exe
PID 1236 set thread context of 1824	1236	iexplore.exe	iexplore.exe
PID 1236 set thread context of 1552	1236	iexplore.exe	iexplore.exe
PID 1236 set thread context of 1312	1236	iexplore.exe	iexplore.exe
PID 1236 set thread context of 1736	1236	iexplore.exe	iexplore.exe
PID 1236 set thread context of 1688	1236	iexplore.exe	iexplore.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

gunzipped.exe

pid process

872 gunzipped.exe
872 gunzipped.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

iexplore.exeiexplore.exe

description pid process

Token: SeDebugPrivilege 1236 iexplore.exe
Token: SeDebugPrivilege 1824 iexplore.exe
Suspicious use of SetWindowsHookEx 2 IoCs

Processes:

gunzipped.exeiexplore.exe

pid process

872 gunzipped.exe
1236 iexplore.exe

pid	process
872	gunzipped.exe
872	gunzipped.exe

description	pid	process
Token: SeDebugPrivilege	1236	iexplore.exe
Token: SeDebugPrivilege	1824	iexplore.exe

pid	process
872	gunzipped.exe
1236	iexplore.exe

Suspicious use of WriteProcessMemory 64 IoCs

Processes:

gunzipped.exegunzipped.exeiexplore.exe

description	pid	process	target process
PID 1904 wrote to memory of 872	1904	gunzipped.exe	gunzipped.exe
PID 1904 wrote to memory of 872	1904	gunzipped.exe	gunzipped.exe
PID 1904 wrote to memory of 872	1904	gunzipped.exe	gunzipped.exe
PID 1904 wrote to memory of 872	1904	gunzipped.exe	gunzipped.exe
PID 1904 wrote to memory of 872	1904	gunzipped.exe	gunzipped.exe
PID 1904 wrote to memory of 872	1904	gunzipped.exe	gunzipped.exe
PID 1904 wrote to memory of 872	1904	gunzipped.exe	gunzipped.exe
PID 1904 wrote to memory of 872	1904	gunzipped.exe	gunzipped.exe
PID 872 wrote to memory of 1236	872	gunzipped.exe	iexplore.exe
PID 872 wrote to memory of 1236	872	gunzipped.exe	iexplore.exe
PID 872 wrote to memory of 1236	872	gunzipped.exe	iexplore.exe
PID 872 wrote to memory of 1236	872	gunzipped.exe	iexplore.exe
PID 872 wrote to memory of 1236	872	gunzipped.exe	iexplore.exe
PID 872 wrote to memory of 1236	872	gunzipped.exe	iexplore.exe
PID 872 wrote to memory of 1236	872	gunzipped.exe	iexplore.exe
PID 872 wrote to memory of 1236	872	gunzipped.exe	iexplore.exe
PID 872 wrote to memory of 1236	872	gunzipped.exe	iexplore.exe
PID 1236 wrote to memory of 1824	1236	iexplore.exe	iexplore.exe
PID 1236 wrote to memory of 1824	1236	iexplore.exe	iexplore.exe
PID 1236 wrote to memory of 1824	1236	iexplore.exe	iexplore.exe
PID 1236 wrote to memory of 1824	1236	iexplore.exe	iexplore.exe
PID 1236 wrote to memory of 1824	1236	iexplore.exe	iexplore.exe
PID 1236 wrote to memory of 1824	1236	iexplore.exe	iexplore.exe
PID 1236 wrote to memory of 1824	1236	iexplore.exe	iexplore.exe
PID 1236 wrote to memory of 1824	1236	iexplore.exe	iexplore.exe
PID 1236 wrote to memory of 1824	1236	iexplore.exe	iexplore.exe
PID 1236 wrote to memory of 1552	1236	iexplore.exe	iexplore.exe
PID 1236 wrote to memory of 1552	1236	iexplore.exe	iexplore.exe
PID 1236 wrote to memory of 1552	1236	iexplore.exe	iexplore.exe
PID 1236 wrote to memory of 1552	1236	iexplore.exe	iexplore.exe
PID 1236 wrote to memory of 1552	1236	iexplore.exe	iexplore.exe
PID 1236 wrote to memory of 1552	1236	iexplore.exe	iexplore.exe
PID 1236 wrote to memory of 1552	1236	iexplore.exe	iexplore.exe
PID 1236 wrote to memory of 1552	1236	iexplore.exe	iexplore.exe
PID 1236 wrote to memory of 1552	1236	iexplore.exe	iexplore.exe
PID 1236 wrote to memory of 1552	1236	iexplore.exe	iexplore.exe
PID 1236 wrote to memory of 1312	1236	iexplore.exe	iexplore.exe
PID 1236 wrote to memory of 1312	1236	iexplore.exe	iexplore.exe
PID 1236 wrote to memory of 1312	1236	iexplore.exe	iexplore.exe
PID 1236 wrote to memory of 1312	1236	iexplore.exe	iexplore.exe
PID 1236 wrote to memory of 1312	1236	iexplore.exe	iexplore.exe
PID 1236 wrote to memory of 1312	1236	iexplore.exe	iexplore.exe
PID 1236 wrote to memory of 1312	1236	iexplore.exe	iexplore.exe
PID 1236 wrote to memory of 1312	1236	iexplore.exe	iexplore.exe
PID 1236 wrote to memory of 1312	1236	iexplore.exe	iexplore.exe
PID 1236 wrote to memory of 1312	1236	iexplore.exe	iexplore.exe
PID 1236 wrote to memory of 1736	1236	iexplore.exe	iexplore.exe
PID 1236 wrote to memory of 1736	1236	iexplore.exe	iexplore.exe
PID 1236 wrote to memory of 1736	1236	iexplore.exe	iexplore.exe
PID 1236 wrote to memory of 1736	1236	iexplore.exe	iexplore.exe
PID 1236 wrote to memory of 1736	1236	iexplore.exe	iexplore.exe
PID 1236 wrote to memory of 1736	1236	iexplore.exe	iexplore.exe
PID 1236 wrote to memory of 1736	1236	iexplore.exe	iexplore.exe
PID 1236 wrote to memory of 1736	1236	iexplore.exe	iexplore.exe
PID 1236 wrote to memory of 1736	1236	iexplore.exe	iexplore.exe
PID 1236 wrote to memory of 1688	1236	iexplore.exe	iexplore.exe
PID 1236 wrote to memory of 1688	1236	iexplore.exe	iexplore.exe
PID 1236 wrote to memory of 1688	1236	iexplore.exe	iexplore.exe
PID 1236 wrote to memory of 1688	1236	iexplore.exe	iexplore.exe
PID 1236 wrote to memory of 1688	1236	iexplore.exe	iexplore.exe
PID 1236 wrote to memory of 1688	1236	iexplore.exe	iexplore.exe
PID 1236 wrote to memory of 1688	1236	iexplore.exe	iexplore.exe
PID 1236 wrote to memory of 1688	1236	iexplore.exe	iexplore.exe
PID 1236 wrote to memory of 1688	1236	iexplore.exe	iexplore.exe

System policy modification 1 TTPs 1 IoCs
evasion

Modify Registry
T1112

Processes:

gunzipped.exe

description ioc process

Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0" gunzipped.exe

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

C:\Users\Admin\AppData\Local\Temp\gunzipped.exe
"C:\Users\Admin\AppData\Local\Temp\gunzipped.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1904
- C:\Users\Admin\AppData\Local\Temp\gunzipped.exe
  "C:\Users\Admin\AppData\Local\Temp\gunzipped.exe"
  2⤵
  - Windows security modification
  - Checks whether UAC is enabled
  - Suspicious use of SetThreadContext
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  - System policy modification
  PID:872
- - C:\Program Files (x86)\Internet Explorer\iexplore.exe
    C:\Users\Admin\AppData\Local\Temp\gunzipped.exe
    3⤵
    - Adds policy Run key to start application
    - Adds Run key to start application
    - Suspicious use of SetThreadContext
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:1236
  - - C:\Program Files (x86)\Internet Explorer\iexplore.exe
      /stext "C:\Users\Admin\AppData\Roaming\J3S7K4V2-L8C6-M6Q5-Y5I3-V6L7F1Y2X5G0\oksonapec0.txt"
      4⤵
      Suspicious use of AdjustPrivilegeToken
      PID:1824
  - - C:\Program Files (x86)\Internet Explorer\iexplore.exe
      /stext "C:\Users\Admin\AppData\Roaming\J3S7K4V2-L8C6-M6Q5-Y5I3-V6L7F1Y2X5G0\oksonapec1.txt"
      4⤵
      Accesses Microsoft Outlook accounts
      PID:1552
  - - C:\Program Files (x86)\Internet Explorer\iexplore.exe
      /stext "C:\Users\Admin\AppData\Roaming\J3S7K4V2-L8C6-M6Q5-Y5I3-V6L7F1Y2X5G0\oksonapec2.txt"
      4⤵
      PID:1312
  - - C:\Program Files (x86)\Internet Explorer\iexplore.exe
      /stext "C:\Users\Admin\AppData\Roaming\J3S7K4V2-L8C6-M6Q5-Y5I3-V6L7F1Y2X5G0\oksonapec3.txt"
      4⤵
      PID:1736
  - - C:\Program Files (x86)\Internet Explorer\iexplore.exe
      /stext "C:\Users\Admin\AppData\Roaming\J3S7K4V2-L8C6-M6Q5-Y5I3-V6L7F1Y2X5G0\oksonapec4.txt"
      4⤵
      PID:1688

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

2

T1060

Privilege Escalation

Bypass User Account Control

1

T1088

Defense Evasion

Bypass User Account Control

1

T1088

Disabling Security Tools

Modify Registry

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Email Collection

1

T1114

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Roaming\J3S7K4V2-L8C6-M6Q5-Y5I3-V6L7F1Y2X5G0\oksonapec2.txt

MD5
f3b25701fe362ec84616a93a45ce9998

SHA1
d62636d8caec13f04e28442a0a6fa1afeb024bbb

SHA256
b3d510ef04275ca8e698e5b3cbb0ece3949ef9252f0cdc839e9ee347409a2209

SHA512
98c5f56f3de340690c139e58eb7dac111979f0d4dffe9c4b24ff849510f4b6ffa9fd608c0a3de9ac3c9fd2190f0efaf715309061490f9755a9bfdf1c54ca0d84

Download Submit
C:\Users\Admin\AppData\Roaming\J3S7K4V2-L8C6-M6Q5-Y5I3-V6L7F1Y2X5G0\oksonapec4.txt

MD5
f3b25701fe362ec84616a93a45ce9998

SHA1
d62636d8caec13f04e28442a0a6fa1afeb024bbb

SHA256
b3d510ef04275ca8e698e5b3cbb0ece3949ef9252f0cdc839e9ee347409a2209

SHA512
98c5f56f3de340690c139e58eb7dac111979f0d4dffe9c4b24ff849510f4b6ffa9fd608c0a3de9ac3c9fd2190f0efaf715309061490f9755a9bfdf1c54ca0d84

Download Submit
memory/872-65-0x0000000000080000-0x0000000000086000-memory.dmp

Filesize
24KB

Download
memory/872-66-0x0000000000080000-0x000000000008A000-memory.dmp

Filesize
40KB

Download
memory/872-64-0x00000000004010B8-mapping.dmp

Download
memory/872-60-0x0000000000400000-0x000000000042C000-memory.dmp

Filesize
176KB

Download
memory/872-61-0x0000000000400000-0x000000000042C000-memory.dmp

Filesize
176KB

Download
memory/872-62-0x0000000000400000-0x000000000042C000-memory.dmp

Filesize
176KB

Download
memory/872-63-0x0000000000400000-0x000000000042C000-memory.dmp

Filesize
176KB

Download
memory/1236-67-0x0000000000401364-mapping.dmp

Download
memory/1312-70-0x0000000000442F04-mapping.dmp

Download
memory/1552-69-0x0000000000411654-mapping.dmp

Download
memory/1688-73-0x000000000040C2A8-mapping.dmp

Download
memory/1736-72-0x0000000000413750-mapping.dmp

Download
memory/1824-68-0x0000000000423BC0-mapping.dmp

Download
memory/1904-59-0x0000000004BF0000-0x0000000004C4C000-memory.dmp

Filesize
368KB

Download
memory/1904-54-0x0000000000340000-0x0000000000341000-memory.dmp

Filesize
4KB

Download
memory/1904-58-0x0000000000900000-0x0000000000908000-memory.dmp

Filesize
32KB

Download
memory/1904-57-0x0000000004BB0000-0x0000000004BB1000-memory.dmp

Filesize
4KB

Download
memory/1904-56-0x0000000074F01000-0x0000000074F03000-memory.dmp

Filesize
8KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads