xworm | 69b4f3e7db53a18e1352367ecbf25dba0b86e96af655e6127db1b1205a181f63

General

Target

e5cb8c66cab6a972529a85480b9881bc.exe
Size

40KB
MD5

e5cb8c66cab6a972529a85480b9881bc
SHA1

58eb0e24f0eb4865838d307df886d2b40bfb77cd
SHA256

69b4f3e7db53a18e1352367ecbf25dba0b86e96af655e6127db1b1205a181f63
SHA512

6c049e084e00eea72b3b78480fb79879c8c961d188178b3c59211bbc69ab25deaf88453dc1f4ec23c08ee80e452a453464780193e849121f2f625f96f0dd26f3
SSDEEP

768:uNfPMSk3K/EzTb/0x8WuFZ4lJF5PC9O9EB68OMh63/aO:uf05a/CTjM89UFc9UEB68OMsx

Score

10^/10

xworm execution rat trojan

Malware Config

Extracted

Family

xworm

Version

5.0

C2

45.141.26.119:1996

Mutex

wHK5NlknpAL3Lk1X

Attributes

Install_directory
%AppData%
install_file
csrss.exe

aes.plain

Signatures

Detect Xworm Payload 1 IoCs

Processes:

resource	yara_rule
behavioral2/memory/4008-1-0x0000000000CB0000-0x0000000000CC0000-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

Processes:

powershell.exepowershell.exepowershell.exepowershell.exe

pid process

3100 powershell.exe
2624 powershell.exe
5012 powershell.exe
384 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

Processes:

e5cb8c66cab6a972529a85480b9881bc.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-2539840389-1261165778-1087677076-1000\Control Panel\International\Geo\Nation	e5cb8c66cab6a972529a85480b9881bc.exe

Drops startup file 2 IoCs

Processes:

e5cb8c66cab6a972529a85480b9881bc.exe

description	ioc	process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\csrss.lnk	e5cb8c66cab6a972529a85480b9881bc.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\csrss.lnk	e5cb8c66cab6a972529a85480b9881bc.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.

Processes:

flow ioc

14 ip-api.com
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

flow	ioc
14	ip-api.com

Suspicious behavior: EnumeratesProcesses 9 IoCs

Processes:

powershell.exepowershell.exepowershell.exepowershell.exee5cb8c66cab6a972529a85480b9881bc.exe

pid	process
3100	powershell.exe
3100	powershell.exe
2624	powershell.exe
2624	powershell.exe
5012	powershell.exe
5012	powershell.exe
384	powershell.exe
384	powershell.exe
4008	e5cb8c66cab6a972529a85480b9881bc.exe

Suspicious use of AdjustPrivilegeToken 6 IoCs

Processes:

e5cb8c66cab6a972529a85480b9881bc.exepowershell.exepowershell.exepowershell.exepowershell.exe

description	pid	process
Token: SeDebugPrivilege	4008	e5cb8c66cab6a972529a85480b9881bc.exe
Token: SeDebugPrivilege	3100	powershell.exe
Token: SeDebugPrivilege	2624	powershell.exe
Token: SeDebugPrivilege	5012	powershell.exe
Token: SeDebugPrivilege	384	powershell.exe
Token: SeDebugPrivilege	4008	e5cb8c66cab6a972529a85480b9881bc.exe

Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

e5cb8c66cab6a972529a85480b9881bc.exe

pid process

4008 e5cb8c66cab6a972529a85480b9881bc.exe

pid	process
4008	e5cb8c66cab6a972529a85480b9881bc.exe

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

e5cb8c66cab6a972529a85480b9881bc.exe

description	pid	process	target process
PID 4008 wrote to memory of 3100	4008	e5cb8c66cab6a972529a85480b9881bc.exe	powershell.exe
PID 4008 wrote to memory of 3100	4008	e5cb8c66cab6a972529a85480b9881bc.exe	powershell.exe
PID 4008 wrote to memory of 2624	4008	e5cb8c66cab6a972529a85480b9881bc.exe	powershell.exe
PID 4008 wrote to memory of 2624	4008	e5cb8c66cab6a972529a85480b9881bc.exe	powershell.exe
PID 4008 wrote to memory of 5012	4008	e5cb8c66cab6a972529a85480b9881bc.exe	powershell.exe
PID 4008 wrote to memory of 5012	4008	e5cb8c66cab6a972529a85480b9881bc.exe	powershell.exe
PID 4008 wrote to memory of 384	4008	e5cb8c66cab6a972529a85480b9881bc.exe	powershell.exe
PID 4008 wrote to memory of 384	4008	e5cb8c66cab6a972529a85480b9881bc.exe	powershell.exe

C:\Users\Admin\AppData\Local\Temp\e5cb8c66cab6a972529a85480b9881bc.exe
"C:\Users\Admin\AppData\Local\Temp\e5cb8c66cab6a972529a85480b9881bc.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:4008
- 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\e5cb8c66cab6a972529a85480b9881bc.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 'e5cb8c66cab6a972529a85480b9881bc.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2624
- 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\csrss.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:5012
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'csrss.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:384

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

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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
22310ad6749d8cc38284aa616efcd100

SHA1
440ef4a0a53bfa7c83fe84326a1dff4326dcb515

SHA256
55b1d8021c4eb4c3c0d75e3ed7a4eb30cd0123e3d69f32eeb596fe4ffec05abf

SHA512
2ef08e2ee15bb86695fe0c10533014ffed76ececc6e579d299d3365fafb7627f53e32e600bb6d872b9f58aca94f8cb7e1e94cdfd14777527f7f0aa019d9c6def

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

Filesize
944B

MD5
5dc0e0a4a9d9bf35484a9af707b74b45

SHA1
7cc1282f450ce5c3443dcd975d798b243028bdb2

SHA256
d1192f6149b6c2a72b7eaea1b7b7dda896b7c5c1fbd165f8f9c06afe7e6cce97

SHA512
90b024185d654d1e892f3ab58b861d36ab6f0b54293e554cfb101298a17d464b9e167f64b97bb55d55bd685981764646290c25afadfc7e7163c661c967381b64

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_zhgaklkx.evn.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/3100-3-0x00007FFC401D0000-0x00007FFC40C91000-memory.dmp

Filesize
10.8MB

Download
memory/3100-11-0x000001B876AF0000-0x000001B876B12000-memory.dmp

Filesize
136KB

Download
memory/3100-5-0x00007FFC401D0000-0x00007FFC40C91000-memory.dmp

Filesize
10.8MB

Download
memory/3100-18-0x00007FFC401D0000-0x00007FFC40C91000-memory.dmp

Filesize
10.8MB

Download
memory/3100-4-0x00007FFC401D0000-0x00007FFC40C91000-memory.dmp

Filesize
10.8MB

Download
memory/4008-0-0x00007FFC401D3000-0x00007FFC401D5000-memory.dmp

Filesize
8KB

Download
memory/4008-2-0x00007FFC401D0000-0x00007FFC40C91000-memory.dmp

Filesize
10.8MB

Download
memory/4008-1-0x0000000000CB0000-0x0000000000CC0000-memory.dmp

Filesize
64KB

Download
memory/4008-57-0x00007FFC401D3000-0x00007FFC401D5000-memory.dmp

Filesize
8KB

Download
memory/4008-58-0x00007FFC401D0000-0x00007FFC40C91000-memory.dmp

Filesize
10.8MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads