xworm | 2d1c1347b0e889a6f74fed1878738e0026ea2fe10c8082d9ba5fcdb0e8ed939b

General

Target

2d1c1347b0e889a6f74fed1878738e0026ea2fe10c8082d9ba5fcdb0e8ed939b.exe
Size

1.4MB
MD5

e84bb6efc8e0ebec1826b770cfb59bd9
SHA1

5fe35e0b634a95fcff997882839004a225a29bf1
SHA256

2d1c1347b0e889a6f74fed1878738e0026ea2fe10c8082d9ba5fcdb0e8ed939b
SHA512

562cef1a697cdb516d09341b58d790984284b6617ba5a24040b1a36ae3cd448b8857a7e5dcd1f541d5e18888fe7b525894077fce08463d5a7dfe2b00eb0de810
SSDEEP

24576:uOnCbIk+tdLb0Tj3ndie/UV7EMhD6ZnlyBI0DJewitKUiVh8t6S9U8XxT9Q+FTtT:prUlH0UcBS9UutT

Score

10^/10

xworm evasion execution rat trojan

Malware Config

Extracted

Family

xworm

Version

5.0

C2

79.110.49.133:5700

Mutex

Bg9JRZDpyEfXxrAy

Attributes

install_file
USB.exe

aes.plain

Signatures

Detect Xworm Payload 5 IoCs

resource	yara_rule
behavioral1/memory/2712-15-0x0000000000400000-0x000000000040E000-memory.dmp	family_xworm
behavioral1/memory/2712-24-0x0000000000400000-0x000000000040E000-memory.dmp	family_xworm
behavioral1/memory/2712-22-0x0000000000400000-0x000000000040E000-memory.dmp	family_xworm
behavioral1/memory/2712-20-0x0000000000400000-0x000000000040E000-memory.dmp	family_xworm
behavioral1/memory/2712-17-0x0000000000400000-0x000000000040E000-memory.dmp	family_xworm

UAC bypass 3 TTPs 1 IoCs

evasion trojan

Bypass User Account Control

T1548.002

Disable or Modify Tools

T1562.001

Modify Registry

T1112

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	2d1c1347b0e889a6f74fed1878738e0026ea2fe10c8082d9ba5fcdb0e8ed939b.exe

Xworm
Xworm is a remote access trojan written in C#.
trojan rat xworm

Detects Windows executables referencing non-Windows User-Agents 5 IoCs

resource	yara_rule
behavioral1/memory/2712-15-0x0000000000400000-0x000000000040E000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_NoneWindowsUA
behavioral1/memory/2712-24-0x0000000000400000-0x000000000040E000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_NoneWindowsUA
behavioral1/memory/2712-22-0x0000000000400000-0x000000000040E000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_NoneWindowsUA
behavioral1/memory/2712-20-0x0000000000400000-0x000000000040E000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_NoneWindowsUA
behavioral1/memory/2712-17-0x0000000000400000-0x000000000040E000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_NoneWindowsUA

Detects executables packed with or use KoiVM 1 IoCs

resource	yara_rule
behavioral1/memory/2184-6-0x0000000001D20000-0x0000000001D82000-memory.dmp	INDICATOR_EXE_Packed_KoiVM

Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

execution

PowerShell

T1059.001

pid	Process
1292	powershell.exe

Checks whether UAC is enabled 1 TTPs 2 IoCs

evasion trojan

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	2d1c1347b0e889a6f74fed1878738e0026ea2fe10c8082d9ba5fcdb0e8ed939b.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	2d1c1347b0e889a6f74fed1878738e0026ea2fe10c8082d9ba5fcdb0e8ed939b.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2184 set thread context of 2712	2184	2d1c1347b0e889a6f74fed1878738e0026ea2fe10c8082d9ba5fcdb0e8ed939b.exe	31

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
1292	powershell.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1292	powershell.exe
Token: SeDebugPrivilege	2712	regasm.exe

Suspicious use of WriteProcessMemory 18 IoCs

description	pid	Process	procid_target
PID 2184 wrote to memory of 1292	2184	2d1c1347b0e889a6f74fed1878738e0026ea2fe10c8082d9ba5fcdb0e8ed939b.exe	29
PID 2184 wrote to memory of 1292	2184	2d1c1347b0e889a6f74fed1878738e0026ea2fe10c8082d9ba5fcdb0e8ed939b.exe	29
PID 2184 wrote to memory of 1292	2184	2d1c1347b0e889a6f74fed1878738e0026ea2fe10c8082d9ba5fcdb0e8ed939b.exe	29
PID 2184 wrote to memory of 2712	2184	2d1c1347b0e889a6f74fed1878738e0026ea2fe10c8082d9ba5fcdb0e8ed939b.exe	31
PID 2184 wrote to memory of 2712	2184	2d1c1347b0e889a6f74fed1878738e0026ea2fe10c8082d9ba5fcdb0e8ed939b.exe	31
PID 2184 wrote to memory of 2712	2184	2d1c1347b0e889a6f74fed1878738e0026ea2fe10c8082d9ba5fcdb0e8ed939b.exe	31
PID 2184 wrote to memory of 2712	2184	2d1c1347b0e889a6f74fed1878738e0026ea2fe10c8082d9ba5fcdb0e8ed939b.exe	31
PID 2184 wrote to memory of 2712	2184	2d1c1347b0e889a6f74fed1878738e0026ea2fe10c8082d9ba5fcdb0e8ed939b.exe	31
PID 2184 wrote to memory of 2712	2184	2d1c1347b0e889a6f74fed1878738e0026ea2fe10c8082d9ba5fcdb0e8ed939b.exe	31
PID 2184 wrote to memory of 2712	2184	2d1c1347b0e889a6f74fed1878738e0026ea2fe10c8082d9ba5fcdb0e8ed939b.exe	31
PID 2184 wrote to memory of 2712	2184	2d1c1347b0e889a6f74fed1878738e0026ea2fe10c8082d9ba5fcdb0e8ed939b.exe	31
PID 2184 wrote to memory of 2712	2184	2d1c1347b0e889a6f74fed1878738e0026ea2fe10c8082d9ba5fcdb0e8ed939b.exe	31
PID 2184 wrote to memory of 2712	2184	2d1c1347b0e889a6f74fed1878738e0026ea2fe10c8082d9ba5fcdb0e8ed939b.exe	31
PID 2184 wrote to memory of 2712	2184	2d1c1347b0e889a6f74fed1878738e0026ea2fe10c8082d9ba5fcdb0e8ed939b.exe	31
PID 2184 wrote to memory of 2712	2184	2d1c1347b0e889a6f74fed1878738e0026ea2fe10c8082d9ba5fcdb0e8ed939b.exe	31
PID 2184 wrote to memory of 2756	2184	2d1c1347b0e889a6f74fed1878738e0026ea2fe10c8082d9ba5fcdb0e8ed939b.exe	32
PID 2184 wrote to memory of 2756	2184	2d1c1347b0e889a6f74fed1878738e0026ea2fe10c8082d9ba5fcdb0e8ed939b.exe	32
PID 2184 wrote to memory of 2756	2184	2d1c1347b0e889a6f74fed1878738e0026ea2fe10c8082d9ba5fcdb0e8ed939b.exe	32

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"	2d1c1347b0e889a6f74fed1878738e0026ea2fe10c8082d9ba5fcdb0e8ed939b.exe

C:\Users\Admin\AppData\Local\Temp\2d1c1347b0e889a6f74fed1878738e0026ea2fe10c8082d9ba5fcdb0e8ed939b.exe
"C:\Users\Admin\AppData\Local\Temp\2d1c1347b0e889a6f74fed1878738e0026ea2fe10c8082d9ba5fcdb0e8ed939b.exe"
1⤵
- UAC bypass
- Checks whether UAC is enabled
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
- System policy modification
PID:2184
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Local\Temp\2d1c1347b0e889a6f74fed1878738e0026ea2fe10c8082d9ba5fcdb0e8ed939b.exe" -Force
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1292
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\regasm.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\regasm.exe"
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:2712
- C:\Windows\system32\WerFault.exe
  C:\Windows\system32\WerFault.exe -u -p 2184 -s 848
  2⤵
  PID:2756

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1

T1059

PowerShell

1

T1059.001

Persistence

Privilege Escalation

Abuse Elevation Control Mechanism

1

T1548

Bypass User Account Control

1

T1548.002

Defense Evasion

Abuse Elevation Control Mechanism

1

T1548

Bypass User Account Control

1

T1548.002

Impair Defenses

1

T1562

Disable or Modify Tools

Modify Registry

Credential Access

Discovery

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/1292-25-0x000007FEED8DE000-0x000007FEED8DF000-memory.dmp

Filesize
4KB

Download
memory/1292-32-0x000007FEED620000-0x000007FEEDFBD000-memory.dmp

Filesize
9.6MB

Download
memory/1292-31-0x000007FEED620000-0x000007FEEDFBD000-memory.dmp

Filesize
9.6MB

Download
memory/1292-30-0x000007FEED620000-0x000007FEEDFBD000-memory.dmp

Filesize
9.6MB

Download
memory/1292-29-0x000007FEED620000-0x000007FEEDFBD000-memory.dmp

Filesize
9.6MB

Download
memory/1292-28-0x000007FEED620000-0x000007FEEDFBD000-memory.dmp

Filesize
9.6MB

Download
memory/1292-27-0x0000000002340000-0x0000000002348000-memory.dmp

Filesize
32KB

Download
memory/1292-26-0x000000001B5B0000-0x000000001B892000-memory.dmp

Filesize
2.9MB

Download
memory/2184-6-0x0000000001D20000-0x0000000001D82000-memory.dmp

Filesize
392KB

Download
memory/2184-2-0x000007FEF5620000-0x000007FEF600C000-memory.dmp

Filesize
9.9MB

Download
memory/2184-34-0x000007FEF5620000-0x000007FEF600C000-memory.dmp

Filesize
9.9MB

Download
memory/2184-33-0x000007FEF5623000-0x000007FEF5624000-memory.dmp

Filesize
4KB

Download
memory/2184-1-0x0000000000130000-0x0000000000144000-memory.dmp

Filesize
80KB

Download
memory/2184-4-0x000007FEF5620000-0x000007FEF600C000-memory.dmp

Filesize
9.9MB

Download
memory/2184-3-0x000007FEF5620000-0x000007FEF600C000-memory.dmp

Filesize
9.9MB

Download
memory/2184-5-0x000007FEF5620000-0x000007FEF600C000-memory.dmp

Filesize
9.9MB

Download
memory/2184-0-0x000007FEF5623000-0x000007FEF5624000-memory.dmp

Filesize
4KB

Download
memory/2712-15-0x0000000000400000-0x000000000040E000-memory.dmp

Filesize
56KB

Download
memory/2712-19-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2712-11-0x0000000000400000-0x000000000040E000-memory.dmp

Filesize
56KB

Download
memory/2712-13-0x0000000000400000-0x000000000040E000-memory.dmp

Filesize
56KB

Download
memory/2712-24-0x0000000000400000-0x000000000040E000-memory.dmp

Filesize
56KB

Download
memory/2712-17-0x0000000000400000-0x000000000040E000-memory.dmp

Filesize
56KB

Download
memory/2712-20-0x0000000000400000-0x000000000040E000-memory.dmp

Filesize
56KB

Download
memory/2712-22-0x0000000000400000-0x000000000040E000-memory.dmp

Filesize
56KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads