xworm | 28041fc75ea0dd89b4cfa6338ff7dd3ef053bf5e49eca14f6d8e4acc003c9c6b

Resubmissions

02/09/2024, 04:11

240902-erx5ws1ekl 10

31/08/2024, 15:44

240831-s6y8dssajf 10

31/08/2024, 15:41

240831-s4ytva1gph 10

31/08/2024, 15:35

240831-s1fh4a1fjk 10

Analysis

max time kernel
316s
max time network
891s
platform
windows10-1703_x64
resource
win10-20240404-en
resource tags

arch:x64arch:x86image:win10-20240404-enlocale:en-usos:windows10-1703-x64system
submitted
31/08/2024, 15:41

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General

Target

XClient.exe
Size

84KB
MD5

13f12b20731a141144d59aef56828f78
SHA1

2aef63a0f584914b022ea7d039bd431fa99520b3
SHA256

28041fc75ea0dd89b4cfa6338ff7dd3ef053bf5e49eca14f6d8e4acc003c9c6b
SHA512

19f9aeb3ceed2cd0ab93e0f449174de9f07afba41f38c620a1480b052c18ce898d52b9c90f3cfe83611064b4b6cf7444041a4b1d52de214811436975802bcbaa
SSDEEP

1536:E4VFkamGxes+ESPmWnz5fH0hgThsipZR8beJKNlG8V6f7/7zOD5gfRJoBP:E4VNxedPmWt04/UbeSly7/vOD5c4V

Score

10^/10

xworm execution rat trojan

Malware Config

Extracted

Family

xworm

178.215.236.68:7000

Attributes

install_file
USB.exe

Signatures

Detect Xworm Payload 1 IoCs

resource	yara_rule
behavioral3/memory/4192-1-0x0000000000B10000-0x0000000000B2C000-memory.dmp	family_xworm

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

Command and Scripting Interpreter: PowerShell 1 TTPs 2 IoCs

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

execution

PowerShell

T1059.001

pid	Process
204	powershell.exe
3312	powershell.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
1	ip-api.com

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

System Information Discovery
T1082

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
4384	timeout.exe

Suspicious behavior: EnumeratesProcesses 7 IoCs

pid	Process
204	powershell.exe
204	powershell.exe
204	powershell.exe
3312	powershell.exe
3312	powershell.exe
3312	powershell.exe
4192	XClient.exe

Suspicious use of AdjustPrivilegeToken 46 IoCs

description	pid	Process
Token: SeDebugPrivilege	4192	XClient.exe
Token: SeDebugPrivilege	204	powershell.exe
Token: SeIncreaseQuotaPrivilege	204	powershell.exe
Token: SeSecurityPrivilege	204	powershell.exe
Token: SeTakeOwnershipPrivilege	204	powershell.exe
Token: SeLoadDriverPrivilege	204	powershell.exe
Token: SeSystemProfilePrivilege	204	powershell.exe
Token: SeSystemtimePrivilege	204	powershell.exe
Token: SeProfSingleProcessPrivilege	204	powershell.exe
Token: SeIncBasePriorityPrivilege	204	powershell.exe
Token: SeCreatePagefilePrivilege	204	powershell.exe
Token: SeBackupPrivilege	204	powershell.exe
Token: SeRestorePrivilege	204	powershell.exe
Token: SeShutdownPrivilege	204	powershell.exe
Token: SeDebugPrivilege	204	powershell.exe
Token: SeSystemEnvironmentPrivilege	204	powershell.exe
Token: SeRemoteShutdownPrivilege	204	powershell.exe
Token: SeUndockPrivilege	204	powershell.exe
Token: SeManageVolumePrivilege	204	powershell.exe
Token: 33	204	powershell.exe
Token: 34	204	powershell.exe
Token: 35	204	powershell.exe
Token: 36	204	powershell.exe
Token: SeDebugPrivilege	3312	powershell.exe
Token: SeIncreaseQuotaPrivilege	3312	powershell.exe
Token: SeSecurityPrivilege	3312	powershell.exe
Token: SeTakeOwnershipPrivilege	3312	powershell.exe
Token: SeLoadDriverPrivilege	3312	powershell.exe
Token: SeSystemProfilePrivilege	3312	powershell.exe
Token: SeSystemtimePrivilege	3312	powershell.exe
Token: SeProfSingleProcessPrivilege	3312	powershell.exe
Token: SeIncBasePriorityPrivilege	3312	powershell.exe
Token: SeCreatePagefilePrivilege	3312	powershell.exe
Token: SeBackupPrivilege	3312	powershell.exe
Token: SeRestorePrivilege	3312	powershell.exe
Token: SeShutdownPrivilege	3312	powershell.exe
Token: SeDebugPrivilege	3312	powershell.exe
Token: SeSystemEnvironmentPrivilege	3312	powershell.exe
Token: SeRemoteShutdownPrivilege	3312	powershell.exe
Token: SeUndockPrivilege	3312	powershell.exe
Token: SeManageVolumePrivilege	3312	powershell.exe
Token: 33	3312	powershell.exe
Token: 34	3312	powershell.exe
Token: 35	3312	powershell.exe
Token: 36	3312	powershell.exe
Token: SeDebugPrivilege	4192	XClient.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4192	XClient.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 4192 wrote to memory of 204	4192	XClient.exe	73
PID 4192 wrote to memory of 204	4192	XClient.exe	73
PID 4192 wrote to memory of 3312	4192	XClient.exe	76
PID 4192 wrote to memory of 3312	4192	XClient.exe	76
PID 4192 wrote to memory of 4560	4192	XClient.exe	78
PID 4192 wrote to memory of 4560	4192	XClient.exe	78
PID 4560 wrote to memory of 4384	4560	cmd.exe	80
PID 4560 wrote to memory of 4384	4560	cmd.exe	80

C:\Users\Admin\AppData\Local\Temp\XClient.exe
"C:\Users\Admin\AppData\Local\Temp\XClient.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4192
- 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:204
- 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:3312
- C:\Windows\system32\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp5ED.tmp.bat""
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:4560
- - C:\Windows\system32\timeout.exe
    timeout 3
    3⤵
    - Delays execution with timeout.exe
    PID:4384

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

PowerShell

T1059.001

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

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
3KB

MD5
ad5cd538ca58cb28ede39c108acb5785

SHA1
1ae910026f3dbe90ed025e9e96ead2b5399be877

SHA256
c9e6cb04d6c893458d5a7e12eb575cf97c3172f5e312b1f63a667cbbc5f0c033

SHA512
c066c5d9b276a68fa636647bb29aea05bfa2292217bc77f5324d9c1d93117772ee8277e1f7cff91ec8d6b7c05ca078f929cecfdbb09582522a9067f54740af13

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

Filesize
1KB

MD5
5dacf03edbc125bbe8528ae920af90cd

SHA1
e8611ed13a0b119cf1d40f7e2295c97504a95c09

SHA256
a2d7ade0ed9e446772f92dde889a38c428c9fbc9dcf944a08eab8ac0bd4d3f9a

SHA512
e05e5f53840a9538d9294a7d329ec562a9d21a06204d0a6fbd1d0f52544c20aaf66002af1fac57b47faeec997f64b6c4def9d4544d1c5b8221025a3779108113

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_chcg0pgn.lvg.ps1

Filesize
1B

MD5
c4ca4238a0b923820dcc509a6f75849b

SHA1
356a192b7913b04c54574d18c28d46e6395428ab

SHA256
6b86b273ff34fce19d6b804eff5a3f5747ada4eaa22f1d49c01e52ddb7875b4b

SHA512
4dff4ea340f0a823f15d3f4f01ab62eae0e5da579ccb851f8db9dfe84c58b2b37b89903a740e1ee172da793a6e79d560e5f7f9bd058a12a280433ed6fa46510a

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmp5ED.tmp.bat

Filesize
158B

MD5
ea9dbf51f29222abf1bfa53d744764c4

SHA1
7b97382f73699f8a388428f8c11ddf5bdcc01955

SHA256
ea743fc496322a16e1f85df15ebd801bdbdd5fde73d08eb03afeb5709e52977b

SHA512
14ee925dbc150a38580437a0d995f795d2cf13c1fb53c77f450456e5fb9b5fdf2df28b623b7bfc5ccff0db5d1fb4158476650ddb979f9516d6b2e48f24b72f18

Download Submit
memory/204-8-0x00007FFB5D420000-0x00007FFB5DE0C000-memory.dmp

Filesize
9.9MB

Download
memory/204-9-0x00007FFB5D420000-0x00007FFB5DE0C000-memory.dmp

Filesize
9.9MB

Download
memory/204-10-0x00000207742E0000-0x0000020774302000-memory.dmp

Filesize
136KB

Download
memory/204-13-0x00000207745A0000-0x0000020774616000-memory.dmp

Filesize
472KB

Download
memory/204-51-0x00007FFB5D420000-0x00007FFB5DE0C000-memory.dmp

Filesize
9.9MB

Download
memory/204-7-0x00007FFB5D420000-0x00007FFB5DE0C000-memory.dmp

Filesize
9.9MB

Download
memory/4192-0-0x00007FFB5D423000-0x00007FFB5D424000-memory.dmp

Filesize
4KB

Download
memory/4192-2-0x00007FFB5D420000-0x00007FFB5DE0C000-memory.dmp

Filesize
9.9MB

Download
memory/4192-95-0x00007FFB5D423000-0x00007FFB5D424000-memory.dmp

Filesize
4KB

Download
memory/4192-96-0x00007FFB5D420000-0x00007FFB5DE0C000-memory.dmp

Filesize
9.9MB

Download
memory/4192-1-0x0000000000B10000-0x0000000000B2C000-memory.dmp

Filesize
112KB

Download
memory/4192-101-0x00007FFB5D420000-0x00007FFB5DE0C000-memory.dmp

Filesize
9.9MB

Download