xworm | 8c8a2fea63dc99d033af66a6cbc0034ed3eafbf20912e58f8d571555584154da

General

Target

XClientnigaz.exe
Size

79KB
MD5

8fb3eace3e1ba795ccc5a82b911503cb
SHA1

8566285c99b8fda42b3d68495dac3377d6231401
SHA256

8c8a2fea63dc99d033af66a6cbc0034ed3eafbf20912e58f8d571555584154da
SHA512

240a7ed95bfebb9472dfee2d2eab49db245d5fde37d4b9585316ef3cc0762008a17a7863506ee94a1ecb469e42ee01ec84080070edf50ab5ae6702923cac3938
SSDEEP

1536:Oui+59ku1fCyjvid5oXsK+bTlexkHV/6+bOIgY4OOsGN:Yju1fhjvi/Q+bTl/bOFYON

Score

10^/10

xworm execution persistence rat trojan

Malware Config

Extracted

Family

xworm

C2

195.88.218.113:30101

Attributes

Install_directory
%AppData%
install_file
Console Window Host.exe

Signatures

Detect Xworm Payload 2 IoCs

resource	yara_rule
behavioral2/memory/4880-1-0x0000000000990000-0x00000000009AA000-memory.dmp	family_xworm
behavioral2/files/0x000a000000022719-58.dat	family_xworm

Xworm
Xworm is a remote access trojan written in C#.
trojan rat xworm
Xworm family
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
1060	powershell.exe
3808	powershell.exe
3100	powershell.exe
4412	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-1-5-21-940901362-3608833189-1915618603-1000\Control Panel\International\Geo\Nation	XClientnigaz.exe

Drops startup file 2 IoCs

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

Executes dropped EXE 3 IoCs

pid	Process
1604	Console Window Host.exe
4488	Console Window Host.exe
2180	Console Window Host.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-1-5-21-940901362-3608833189-1915618603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Console Window Host = "C:\\Users\\Admin\\AppData\\Roaming\\Console Window Host.exe"	XClientnigaz.exe

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

System Information Discovery
T1082

Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence execution

Scheduled Task

T1053.005

pid	Process
1932	schtasks.exe

Suspicious behavior: EnumeratesProcesses 9 IoCs

pid	Process
1060	powershell.exe
1060	powershell.exe
3808	powershell.exe
3808	powershell.exe
3100	powershell.exe
3100	powershell.exe
4412	powershell.exe
4412	powershell.exe
4880	XClientnigaz.exe

Suspicious use of AdjustPrivilegeToken 9 IoCs

description	pid	Process
Token: SeDebugPrivilege	4880	XClientnigaz.exe
Token: SeDebugPrivilege	1060	powershell.exe
Token: SeDebugPrivilege	3808	powershell.exe
Token: SeDebugPrivilege	3100	powershell.exe
Token: SeDebugPrivilege	4412	powershell.exe
Token: SeDebugPrivilege	4880	XClientnigaz.exe
Token: SeDebugPrivilege	1604	Console Window Host.exe
Token: SeDebugPrivilege	4488	Console Window Host.exe
Token: SeDebugPrivilege	2180	Console Window Host.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4880	XClientnigaz.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 4880 wrote to memory of 1060	4880	XClientnigaz.exe	90
PID 4880 wrote to memory of 1060	4880	XClientnigaz.exe	90
PID 4880 wrote to memory of 3808	4880	XClientnigaz.exe	95
PID 4880 wrote to memory of 3808	4880	XClientnigaz.exe	95
PID 4880 wrote to memory of 3100	4880	XClientnigaz.exe	98
PID 4880 wrote to memory of 3100	4880	XClientnigaz.exe	98
PID 4880 wrote to memory of 4412	4880	XClientnigaz.exe	102
PID 4880 wrote to memory of 4412	4880	XClientnigaz.exe	102
PID 4880 wrote to memory of 1932	4880	XClientnigaz.exe	106
PID 4880 wrote to memory of 1932	4880	XClientnigaz.exe	106

Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
persistence

Query Registry
T1012

C:\Users\Admin\AppData\Local\Temp\XClientnigaz.exe
"C:\Users\Admin\AppData\Local\Temp\XClientnigaz.exe"
1⤵
- Checks computer location settings
- Drops startup file
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4880
- 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\XClientnigaz.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1060
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'XClientnigaz.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:3808
- 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\Console Window Host.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:3100
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'Console Window Host.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:4412
- C:\Windows\System32\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "Console Window Host" /tr "C:\Users\Admin\AppData\Roaming\Console Window Host.exe"
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:1932

C:\Users\Admin\AppData\Roaming\Console Window Host.exe
"C:\Users\Admin\AppData\Roaming\Console Window Host.exe"
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:1604

C:\Users\Admin\AppData\Roaming\Console Window Host.exe
"C:\Users\Admin\AppData\Roaming\Console Window Host.exe"
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:4488

C:\Users\Admin\AppData\Roaming\Console Window Host.exe
"C:\Users\Admin\AppData\Roaming\Console Window Host.exe"
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:2180

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1

T1059

PowerShell

1

T1059.001

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Query Registry

2

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\Console Window Host.exe.log

Filesize
654B

MD5
2ff39f6c7249774be85fd60a8f9a245e

SHA1
684ff36b31aedc1e587c8496c02722c6698c1c4e

SHA256
e1b91642d85d98124a6a31f710e137ab7fd90dec30e74a05ab7fcf3b7887dced

SHA512
1d7e8b92ef4afd463d62cfa7e8b9d1799db5bf2a263d3cd7840df2e0a1323d24eb595b5f8eb615c6cb15f9e3a7b4fc99f8dd6a3d34479222e966ec708998aed1

Download Submit
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
62623d22bd9e037191765d5083ce16a3

SHA1
4a07da6872672f715a4780513d95ed8ddeefd259

SHA256
95d79fd575bbd21540e378fcbc1cd00d16f51af62ce15bae7080bb72c24e2010

SHA512
9a448b7a0d867466c2ea04ab84d2a9485d5fd20ab53b2b854f491831ee3f1d781b94d2635f7b0b35cb9f2d373cd52c67570879a56a42ed66bc9db06962ed4992

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

Filesize
944B

MD5
d3e8199b4634731cf0a0c26c1f14f588

SHA1
7f8fae27eb80055a436a6b5457978f32673d9ad4

SHA256
ef33f487f93c2977e92fb08d6bdcc9d48b5d1864c402f9d3fbf3e1b30e8b3b9a

SHA512
806a123100dbc1ca1b27bbad5b93c3a9a840dc795127af8523333a71259a8c5ef8aefccb83ef390f2644e013f138c4b7b63c584acccb197aada0c70c038032e2

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

Filesize
944B

MD5
b51dc9e5ec3c97f72b4ca9488bbb4462

SHA1
5c1e8c0b728cd124edcacefb399bbd5e25b21bd3

SHA256
976f9534aa2976c85c2455bdde786a3f55d63aefdd40942eba1223c4c93590db

SHA512
0e5aa6cf64c535aefb833e5757b68e1094c87424abe2615a7d7d26b1b31eff358d12e36e75ca57fd690a9919b776600bf4c5c0e5a5df55366ba62238bdf3f280

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_kbmjrthv.cgh.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
C:\Users\Admin\AppData\Roaming\Console Window Host.exe

Filesize
79KB

MD5
8fb3eace3e1ba795ccc5a82b911503cb

SHA1
8566285c99b8fda42b3d68495dac3377d6231401

SHA256
8c8a2fea63dc99d033af66a6cbc0034ed3eafbf20912e58f8d571555584154da

SHA512
240a7ed95bfebb9472dfee2d2eab49db245d5fde37d4b9585316ef3cc0762008a17a7863506ee94a1ecb469e42ee01ec84080070edf50ab5ae6702923cac3938

Download Submit
memory/1060-12-0x00007FF9A4FC0000-0x00007FF9A5A81000-memory.dmp

Filesize
10.8MB

Download
memory/1060-17-0x00007FF9A4FC0000-0x00007FF9A5A81000-memory.dmp

Filesize
10.8MB

Download
memory/1060-14-0x00007FF9A4FC0000-0x00007FF9A5A81000-memory.dmp

Filesize
10.8MB

Download
memory/1060-13-0x00007FF9A4FC0000-0x00007FF9A5A81000-memory.dmp

Filesize
10.8MB

Download
memory/1060-2-0x0000021EC7460000-0x0000021EC7482000-memory.dmp

Filesize
136KB

Download
memory/4880-0-0x00007FF9A4FC3000-0x00007FF9A4FC5000-memory.dmp

Filesize
8KB

Download
memory/4880-56-0x00007FF9A4FC3000-0x00007FF9A4FC5000-memory.dmp

Filesize
8KB

Download
memory/4880-57-0x00007FF9A4FC0000-0x00007FF9A5A81000-memory.dmp

Filesize
10.8MB

Download
memory/4880-61-0x00007FF9A4FC0000-0x00007FF9A5A81000-memory.dmp

Filesize
10.8MB

Download
memory/4880-1-0x0000000000990000-0x00000000009AA000-memory.dmp

Filesize
104KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads