xworm | b0561ac87788cf00035fec3ef59da184dc8743cf40c6d812b9704f9c92832871

General

Target

cmd.exe
Size

85KB
MD5

47c299143a2b328b79b0abbd0d2b4726
SHA1

71b96ac9aee1d841b0c07ebe53b1ebf899a1e056
SHA256

b0561ac87788cf00035fec3ef59da184dc8743cf40c6d812b9704f9c92832871
SHA512

19520cdec2b984cd6f875888a7443edb2c197a2db650c888623f1adbcdd136ff251a119f8a8f5632441f6860f99464c208eeef355c2fb49c18b861bcc2d5351e
SSDEEP

1536:y/jXVBprd91LjQRtosvDJBZ3T7qbKoW++kCKcDgYBtR69ptIvO3kbhKdWGh:yLp9Lk7osvh3ib7W+k4YD0aO3eJGh

Score

10^/10

xworm execution rat trojan

Malware Config

Extracted

Family

xworm

C2

man-laughing.gl.at.ply.gg:57783

Attributes

Install_directory
%LocalAppData%
install_file
Windows Data Compiler.exe

Signatures

Detect Xworm Payload 1 IoCs

resource	yara_rule
behavioral2/memory/2396-1-0x0000000000BB0000-0x0000000000BCC000-memory.dmp	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
3636	powershell.exe
2232	powershell.exe
4524	powershell.exe
5004	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-1-5-21-2878641211-696417878-3864914810-1000\Control Panel\International\Geo\Nation	cmd.exe

Drops startup file 2 IoCs

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

Looks up external IP address via web service 1 IoCs

Uses a legitimate IP lookup service to find the infected system's external IP.

flow	ioc
13	ip-api.com

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

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 9 IoCs

pid	Process
3636	powershell.exe
3636	powershell.exe
2232	powershell.exe
2232	powershell.exe
4524	powershell.exe
4524	powershell.exe
5004	powershell.exe
5004	powershell.exe
2396	cmd.exe

Suspicious use of AdjustPrivilegeToken 6 IoCs

description	pid	Process
Token: SeDebugPrivilege	2396	cmd.exe
Token: SeDebugPrivilege	3636	powershell.exe
Token: SeDebugPrivilege	2232	powershell.exe
Token: SeDebugPrivilege	4524	powershell.exe
Token: SeDebugPrivilege	5004	powershell.exe
Token: SeDebugPrivilege	2396	cmd.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2396	cmd.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 2396 wrote to memory of 3636	2396	cmd.exe	90
PID 2396 wrote to memory of 3636	2396	cmd.exe	90
PID 2396 wrote to memory of 2232	2396	cmd.exe	94
PID 2396 wrote to memory of 2232	2396	cmd.exe	94
PID 2396 wrote to memory of 4524	2396	cmd.exe	96
PID 2396 wrote to memory of 4524	2396	cmd.exe	96
PID 2396 wrote to memory of 5004	2396	cmd.exe	99
PID 2396 wrote to memory of 5004	2396	cmd.exe	99

C:\Users\Admin\AppData\Local\Temp\cmd.exe
"C:\Users\Admin\AppData\Local\Temp\cmd.exe"
1⤵
- Checks computer location settings
- Drops startup file
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2396
- 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\cmd.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:3636
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'cmd.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2232
- 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\Windows Data Compiler.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:4524
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'Windows Data Compiler.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:5004

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

Defense Evasion

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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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
28d4235aa2e6d782751f980ceb6e5021

SHA1
f5d82d56acd642b9fc4b963f684fd6b78f25a140

SHA256
8c66720f953e82cfbd8f00543c42c0cf77c3d97787ec09cb3e1e2ba5819bd638

SHA512
dba1bd6600f5affcfdc33a59e7ac853ee5fdfafb8d1407a1768728bd4f66ef6b49437214716b7e33e3de91d7ce95709050a3dab4354dd62acaf1de28107017a2

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

Filesize
944B

MD5
908b0cbdfcb09ce4486ecf31bf8e29fa

SHA1
bd70258abf57e63958d16563e9f3d0a9e9e452f2

SHA256
160b2f0a2d0545cfe34dc5831f1fe93c7a14c00c89e492c193cdd4e5acdac048

SHA512
a473fe023bc861e4d8d328b83e93cd11d97be02c53be12663e8d86c4b9e20d368b7750b3d119181fcb3605b66fba2ebc966bbdda466b41a4f11843e0ce5061e1

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

Filesize
944B

MD5
e58749a7a1826f6ea62df1e2ef63a32b

SHA1
c0bca21658b8be4f37b71eec9578bfefa44f862d

SHA256
0e1f0e684adb40a5d0668df5fed007c9046137d7ae16a1f2f343b139d5f9bc93

SHA512
4cf45b2b11ab31e7f67fff286b29d50ed28cd6043091144c5c0f1348b5f5916ed7479cf985595e6f096b586ab93b4b5dce612f688049b8366a2dd91863e98b70

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_dqaljfqy.ufx.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/2396-0-0x00007FFF75D53000-0x00007FFF75D55000-memory.dmp

Filesize
8KB

Download
memory/2396-31-0x00007FFF75D53000-0x00007FFF75D55000-memory.dmp

Filesize
8KB

Download
memory/2396-2-0x00007FFF75D50000-0x00007FFF76811000-memory.dmp

Filesize
10.8MB

Download
memory/2396-1-0x0000000000BB0000-0x0000000000BCC000-memory.dmp

Filesize
112KB

Download
memory/2396-58-0x00007FFF75D50000-0x00007FFF76811000-memory.dmp

Filesize
10.8MB

Download
memory/3636-8-0x00007FFF75D50000-0x00007FFF76811000-memory.dmp

Filesize
10.8MB

Download
memory/3636-14-0x00007FFF75D50000-0x00007FFF76811000-memory.dmp

Filesize
10.8MB

Download
memory/3636-15-0x00007FFF75D50000-0x00007FFF76811000-memory.dmp

Filesize
10.8MB

Download
memory/3636-18-0x00007FFF75D50000-0x00007FFF76811000-memory.dmp

Filesize
10.8MB

Download
memory/3636-9-0x00000161DE150000-0x00000161DE172000-memory.dmp

Filesize
136KB

Download

Analysis

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