xworm | feba3474a30f9b010741c34ee4773777fc329390418713ffef424b2eb9243a5f

General

Target

feba3474a30f9b010741c34ee4773777fc329390418713ffef424b2eb9243a5f.exe
Size

40KB
MD5

3ab61ee8a81099edddf87af587420a10
SHA1

d6c0f6f60d13cc786cf7ac0df2c45b5dc47b945c
SHA256

feba3474a30f9b010741c34ee4773777fc329390418713ffef424b2eb9243a5f
SHA512

f43326c79ea8bd118fd90efc8c2c8306e02901727ffd7c6666b2a35820eb8799976007f4886a68a7f411509ad61dcf7ddf5a3630fa5342014ad5aa978818ff3f
SSDEEP

768:pNfPMSk3K/EzTb/008WuFZ4ZJF5PC9O9Fy68OMhi3/aV:nf05a/CTjp89IFc9Uc68OMsi

Score

10^/10

xworm execution rat trojan

Malware Config

Extracted

Family

xworm

Version

5.0

C2

154.197.69.165:7000

Mutex

jcTVbnlMjCEJAYCp

Attributes

Install_directory
%AppData%
install_file
crss.exe

aes.plain

Signatures

Detect Xworm Payload 1 IoCs

resource	yara_rule
behavioral2/memory/1568-1-0x0000000000C40000-0x0000000000C50000-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
3688	powershell.exe
1616	powershell.exe
2732	powershell.exe
3320	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-1-5-21-1194130065-3471212556-1656947724-1000\Control Panel\International\Geo\Nation	feba3474a30f9b010741c34ee4773777fc329390418713ffef424b2eb9243a5f.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\crss.lnk	feba3474a30f9b010741c34ee4773777fc329390418713ffef424b2eb9243a5f.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\crss.lnk	feba3474a30f9b010741c34ee4773777fc329390418713ffef424b2eb9243a5f.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
25	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
1616	powershell.exe
1616	powershell.exe
2732	powershell.exe
2732	powershell.exe
3320	powershell.exe
3320	powershell.exe
3688	powershell.exe
3688	powershell.exe
1568	feba3474a30f9b010741c34ee4773777fc329390418713ffef424b2eb9243a5f.exe

Suspicious use of AdjustPrivilegeToken 6 IoCs

description	pid	Process
Token: SeDebugPrivilege	1568	feba3474a30f9b010741c34ee4773777fc329390418713ffef424b2eb9243a5f.exe
Token: SeDebugPrivilege	1616	powershell.exe
Token: SeDebugPrivilege	2732	powershell.exe
Token: SeDebugPrivilege	3320	powershell.exe
Token: SeDebugPrivilege	3688	powershell.exe
Token: SeDebugPrivilege	1568	feba3474a30f9b010741c34ee4773777fc329390418713ffef424b2eb9243a5f.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1568	feba3474a30f9b010741c34ee4773777fc329390418713ffef424b2eb9243a5f.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 1568 wrote to memory of 1616	1568	feba3474a30f9b010741c34ee4773777fc329390418713ffef424b2eb9243a5f.exe	92
PID 1568 wrote to memory of 1616	1568	feba3474a30f9b010741c34ee4773777fc329390418713ffef424b2eb9243a5f.exe	92
PID 1568 wrote to memory of 2732	1568	feba3474a30f9b010741c34ee4773777fc329390418713ffef424b2eb9243a5f.exe	94
PID 1568 wrote to memory of 2732	1568	feba3474a30f9b010741c34ee4773777fc329390418713ffef424b2eb9243a5f.exe	94
PID 1568 wrote to memory of 3320	1568	feba3474a30f9b010741c34ee4773777fc329390418713ffef424b2eb9243a5f.exe	96
PID 1568 wrote to memory of 3320	1568	feba3474a30f9b010741c34ee4773777fc329390418713ffef424b2eb9243a5f.exe	96
PID 1568 wrote to memory of 3688	1568	feba3474a30f9b010741c34ee4773777fc329390418713ffef424b2eb9243a5f.exe	98
PID 1568 wrote to memory of 3688	1568	feba3474a30f9b010741c34ee4773777fc329390418713ffef424b2eb9243a5f.exe	98

C:\Users\Admin\AppData\Local\Temp\feba3474a30f9b010741c34ee4773777fc329390418713ffef424b2eb9243a5f.exe
"C:\Users\Admin\AppData\Local\Temp\feba3474a30f9b010741c34ee4773777fc329390418713ffef424b2eb9243a5f.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:1568
- 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\feba3474a30f9b010741c34ee4773777fc329390418713ffef424b2eb9243a5f.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1616
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'feba3474a30f9b010741c34ee4773777fc329390418713ffef424b2eb9243a5f.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2732
- 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\crss.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:3320
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'crss.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:3688

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
ba169f4dcbbf147fe78ef0061a95e83b

SHA1
92a571a6eef49fff666e0f62a3545bcd1cdcda67

SHA256
5ef1421e19fde4bc03cd825dd7d6c0e7863f85fd8f0aa4a4d4f8d555dc7606d1

SHA512
8d2e5e552210dcda684682538bc964fdd8a8ff5b24cc2cc8af813729f0202191f98eb42d38d2355df17ae620fe401aad6ceaedaed3b112fdacd32485a3a0c07c

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

Filesize
944B

MD5
d8cb3e9459807e35f02130fad3f9860d

SHA1
5af7f32cb8a30e850892b15e9164030a041f4bd6

SHA256
2b139c74072ccbdaa17b950f32a6dbc934dfb7af9973d97c9b0d9c498012ba68

SHA512
045239ba31367fbdd59e883f74eafc05724e23bd6e8f0c1e7171ea2496a497eb9e0cfcb57285bb81c4d569daadba43d6ef64c626ca48f1e2a59e8d97f0cc9184

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_kwxfsow0.3bj.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/1568-1-0x0000000000C40000-0x0000000000C50000-memory.dmp

Filesize
64KB

Download
memory/1568-2-0x00007FFEAD820000-0x00007FFEAE2E1000-memory.dmp

Filesize
10.8MB

Download
memory/1568-0-0x00007FFEAD823000-0x00007FFEAD825000-memory.dmp

Filesize
8KB

Download
memory/1568-57-0x00007FFEAD820000-0x00007FFEAE2E1000-memory.dmp

Filesize
10.8MB

Download
memory/1616-12-0x000001C92B520000-0x000001C92B542000-memory.dmp

Filesize
136KB

Download
memory/1616-18-0x00007FFEAD820000-0x00007FFEAE2E1000-memory.dmp

Filesize
10.8MB

Download
memory/1616-15-0x00007FFEAD820000-0x00007FFEAE2E1000-memory.dmp

Filesize
10.8MB

Download
memory/1616-14-0x00007FFEAD820000-0x00007FFEAE2E1000-memory.dmp

Filesize
10.8MB

Download
memory/1616-13-0x00007FFEAD820000-0x00007FFEAE2E1000-memory.dmp

Filesize
10.8MB

Download

Analysis

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