xworm | 56d6e266596ba01b68c7545918cc666a2e23b5bb6878da70334b38c5cb1981fd

General

Target

XClient.exe
Size

169KB
MD5

5295e6e63d9ba5e51d537df2ef93a95c
SHA1

8412fae03a631b2efe6cd477932872d3c75eedab
SHA256

56d6e266596ba01b68c7545918cc666a2e23b5bb6878da70334b38c5cb1981fd
SHA512

6175683a1c192a851b11901e3638c824fd81f7248c2901fa2cf703b1267645a6e40fdaf111ba15656ee25aba7e3ac29b34590ddb2a49356c973e2814137d2c0a
SSDEEP

1536:qvDX04YtQQanlgpiUFoKkb1XMn6mVzpasWI46UZVtfvTOSRRRJxEq:qX0xYaoKkb1XHqwsW7ZVRbOSRzJxEq

Score

10^/10

xworm execution persistence rat trojan

Malware Config

Extracted

Family

xworm

C2

127.0.0.1:42975

20.ip.gl.ply.gg:42975

Attributes

Install_directory
%AppData%
install_file
svchost.exe

Signatures

Detect Xworm Payload 1 IoCs

resource	yara_rule
behavioral2/memory/64-1-0x0000000000C80000-0x0000000000CB0000-memory.dmp	family_xworm

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

Command and Scripting Interpreter: PowerShell 1 TTPs 4 IoCs

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

execution

PowerShell

T1059.001

pid	Process
3336	powershell.exe
2000	powershell.exe
532	powershell.exe
404	powershell.exe

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-2539840389-1261165778-1087677076-1000\Control Panel\International\Geo\Nation	XClient.exe

Drops startup file 2 IoCs

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

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-2539840389-1261165778-1087677076-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\svchost = "C:\\Users\\Admin\\AppData\\Roaming\\svchost.exe"	XClient.exe

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

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 8 IoCs

pid	Process
3336	powershell.exe
3336	powershell.exe
2000	powershell.exe
2000	powershell.exe
532	powershell.exe
532	powershell.exe
404	powershell.exe
404	powershell.exe

Suspicious use of AdjustPrivilegeToken 6 IoCs

description	pid	Process
Token: SeDebugPrivilege	64	XClient.exe
Token: SeDebugPrivilege	3336	powershell.exe
Token: SeDebugPrivilege	2000	powershell.exe
Token: SeDebugPrivilege	532	powershell.exe
Token: SeDebugPrivilege	404	powershell.exe
Token: SeDebugPrivilege	64	XClient.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 64 wrote to memory of 3336	64	XClient.exe	82
PID 64 wrote to memory of 3336	64	XClient.exe	82
PID 64 wrote to memory of 2000	64	XClient.exe	84
PID 64 wrote to memory of 2000	64	XClient.exe	84
PID 64 wrote to memory of 532	64	XClient.exe	86
PID 64 wrote to memory of 532	64	XClient.exe	86
PID 64 wrote to memory of 404	64	XClient.exe	88
PID 64 wrote to memory of 404	64	XClient.exe	88

C:\Users\Admin\AppData\Local\Temp\XClient.exe
"C:\Users\Admin\AppData\Local\Temp\XClient.exe"
1⤵
- Checks computer location settings
- Drops startup file
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:64
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\XClient.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:3336
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'XClient.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2000
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Roaming\svchost.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:532
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'svchost.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:404

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1

T1059

PowerShell

1

T1059.001

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\powershell.exe.log

Filesize
2KB

MD5
d85ba6ff808d9e5444a4b369f5bc2730

SHA1
31aa9d96590fff6981b315e0b391b575e4c0804a

SHA256
84739c608a73509419748e4e20e6cc4e1846056c3fe1929a8300d5a1a488202f

SHA512
8c414eb55b45212af385accc16d9d562adba2123583ce70d22b91161fe878683845512a78f04dedd4ea98ed9b174dbfa98cf696370598ad8e6fbd1e714f1f249

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

Filesize
944B

MD5
77d622bb1a5b250869a3238b9bc1402b

SHA1
d47f4003c2554b9dfc4c16f22460b331886b191b

SHA256
f97ff12a8abf4bf88bb6497bd2ac2da12628c8847a8ba5a9026bdbb76507cdfb

SHA512
d6789b5499f23c9035375a102271e17a8a82e57d6f5312fa24242e08a83efdeb8becb7622f55c4cf1b89c7d864b445df11f4d994cf7e2f87a900535bcca12fd9

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

Filesize
944B

MD5
be67063c62a242565760a02a642a9f02

SHA1
d1043a892b44d6676f71b568f578fff947266a19

SHA256
56f158298dc5f781d6636a0b15d040f9cffb1d46cd11079aa40a26b662217f48

SHA512
90d2cbd882ff8043412ad25e74df0cf6b71d6f3fbdfa6f1efa0efc8eed86a925606c7d2e967f112a34d3f0e04f01a396898508571400dcf7e6fd69e78f406638

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

Filesize
944B

MD5
b7e0e67385d5dab240ab2f7c945f3443

SHA1
cb4b238a0757cc85115347f193946cdbfc089f4e

SHA256
8e1f6b184613f6618a22a3e3221276856dd07bc782423c1a208862c524bbb241

SHA512
ed243d9ef73e38a226cf2711a72cfb877cf90f0ee5e88a1db57747b76d9f14b9b2392849ba8e8a5510ae2ba3d15a5647ce7835323d49d93bb211c323a04fa14b

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_afq230mz.wdw.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/64-0-0x00007FFC5F793000-0x00007FFC5F795000-memory.dmp

Filesize
8KB

Download
memory/64-1-0x0000000000C80000-0x0000000000CB0000-memory.dmp

Filesize
192KB

Download
memory/64-56-0x00007FFC5F790000-0x00007FFC60251000-memory.dmp

Filesize
10.8MB

Download
memory/64-57-0x00007FFC5F790000-0x00007FFC60251000-memory.dmp

Filesize
10.8MB

Download
memory/3336-14-0x00007FFC5F790000-0x00007FFC60251000-memory.dmp

Filesize
10.8MB

Download
memory/3336-13-0x00007FFC5F790000-0x00007FFC60251000-memory.dmp

Filesize
10.8MB

Download
memory/3336-17-0x00007FFC5F790000-0x00007FFC60251000-memory.dmp

Filesize
10.8MB

Download
memory/3336-12-0x00007FFC5F790000-0x00007FFC60251000-memory.dmp

Filesize
10.8MB

Download
memory/3336-2-0x000001A054570000-0x000001A054592000-memory.dmp

Filesize
136KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads