xworm | 40d127a2d334e18d6e80801667a5d1e356f8c8a142563e360ab4f15796737428

General

Target

UCO5J_Excellent2.0.exe
Size

77KB
MD5

fa9dbd782dfb5bf2f278c4bc6a73279e
SHA1

dc01ceae67b4983111677b421691903a6eba150b
SHA256

40d127a2d334e18d6e80801667a5d1e356f8c8a142563e360ab4f15796737428
SHA512

dc0a3c67ea86b7dba4016800ddb03c27cc87932fe9244658675c470c3cb8b41f6fb1d1fe87feaef60acc80d65de26ba3ea5e100382bfbdf9c8e6829c5c1c3c04
SSDEEP

1536:rdxon/N6GtnKEc2wP8UiQksF+bVMp23aYkFDoPjPT6HMXkzf2YyjjmO82C3hk:gnF6GtnKTB0Ckk+bVMS9TXU+biO8x3hk

Score

10^/10

xworm execution persistence rat trojan

Malware Config

Extracted

Family

xworm

C2

africa-wins.gl.at.ply.gg:41663

Attributes

Install_directory
%AppData%
install_file
XClient.exe

Signatures

Detect Xworm Payload 1 IoCs

resource	yara_rule
behavioral1/memory/2684-1-0x0000000000B20000-0x0000000000B3A000-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
2720	powershell.exe
2624	powershell.exe
3040	powershell.exe
2540	powershell.exe

Deletes itself 1 IoCs

pid	Process
928	cmd.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\XClient.lnk	UCO5J_Excellent2.0.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\XClient.lnk	UCO5J_Excellent2.0.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-1-5-21-1488793075-819845221-1497111674-1000\Software\Microsoft\Windows\CurrentVersion\Run\XClient = "C:\\Users\\Admin\\AppData\\Roaming\\XClient.exe"	UCO5J_Excellent2.0.exe

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

defense_evasion

pid	Process
2256	timeout.exe

Suspicious behavior: EnumeratesProcesses 5 IoCs

pid	Process
2720	powershell.exe
2624	powershell.exe
3040	powershell.exe
2540	powershell.exe
2684	UCO5J_Excellent2.0.exe

Suspicious use of AdjustPrivilegeToken 6 IoCs

description	pid	Process
Token: SeDebugPrivilege	2684	UCO5J_Excellent2.0.exe
Token: SeDebugPrivilege	2720	powershell.exe
Token: SeDebugPrivilege	2624	powershell.exe
Token: SeDebugPrivilege	3040	powershell.exe
Token: SeDebugPrivilege	2540	powershell.exe
Token: SeDebugPrivilege	2684	UCO5J_Excellent2.0.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2684	UCO5J_Excellent2.0.exe

Suspicious use of WriteProcessMemory 18 IoCs

description	pid	Process	procid_target
PID 2684 wrote to memory of 2720	2684	UCO5J_Excellent2.0.exe	30
PID 2684 wrote to memory of 2720	2684	UCO5J_Excellent2.0.exe	30
PID 2684 wrote to memory of 2720	2684	UCO5J_Excellent2.0.exe	30
PID 2684 wrote to memory of 2624	2684	UCO5J_Excellent2.0.exe	32
PID 2684 wrote to memory of 2624	2684	UCO5J_Excellent2.0.exe	32
PID 2684 wrote to memory of 2624	2684	UCO5J_Excellent2.0.exe	32
PID 2684 wrote to memory of 3040	2684	UCO5J_Excellent2.0.exe	34
PID 2684 wrote to memory of 3040	2684	UCO5J_Excellent2.0.exe	34
PID 2684 wrote to memory of 3040	2684	UCO5J_Excellent2.0.exe	34
PID 2684 wrote to memory of 2540	2684	UCO5J_Excellent2.0.exe	36
PID 2684 wrote to memory of 2540	2684	UCO5J_Excellent2.0.exe	36
PID 2684 wrote to memory of 2540	2684	UCO5J_Excellent2.0.exe	36
PID 2684 wrote to memory of 928	2684	UCO5J_Excellent2.0.exe	39
PID 2684 wrote to memory of 928	2684	UCO5J_Excellent2.0.exe	39
PID 2684 wrote to memory of 928	2684	UCO5J_Excellent2.0.exe	39
PID 928 wrote to memory of 2256	928	cmd.exe	41
PID 928 wrote to memory of 2256	928	cmd.exe	41
PID 928 wrote to memory of 2256	928	cmd.exe	41

C:\Users\Admin\AppData\Local\Temp\UCO5J_Excellent2.0.exe
"C:\Users\Admin\AppData\Local\Temp\UCO5J_Excellent2.0.exe"
1⤵
- 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:2684
- 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\UCO5J_Excellent2.0.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2720
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'UCO5J_Excellent2.0.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\XClient.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:3040
- 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:2540
- C:\Windows\system32\cmd.exe
  cmd /c ""C:\Users\Admin\AppData\Local\Temp\tmp35B0.tmp.bat""
  2⤵
  - Deletes itself
  - Suspicious use of WriteProcessMemory
  PID:928
- - C:\Windows\system32\timeout.exe
    timeout 3
    3⤵
    - Delays execution with timeout.exe
    PID:2256

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1

T1059

PowerShell

1

T1059.001

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmp35B0.tmp.bat

Filesize
170B

MD5
8aac1e054419411efae4be92703d4f2a

SHA1
73c8aff31207536bab19a3fe9869cb89fa0d311d

SHA256
28ab16e624d1389ebae9d46375a93ecd5c360103250086461c2913d78565ca54

SHA512
dc06480961c317c478cb20d75f2e5f9622a8586695e0317aa289d3c8c83dd26561d6219d99f2a87176a8f21f1419b28b2de9674ada7e2a70a3c7c79c9a3b928b

Download Submit
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\590aee7bdd69b59b.customDestinations-ms

Filesize
7KB

MD5
df5d4b6312508d2cae746c01f2470437

SHA1
5ff2d92dc9278898316289ef067b9c0ea1dcde31

SHA256
d574ec21517336b7a70218613ab408d041078451a430d8b50ab95f215d79ecdc

SHA512
f2244b5b3233919592b7ab18846fe9a613c1676fbd2c765551d4c188cfd871346b327afa1156debcf6a93802b2666d1db95850be402efa6c174b9557f545090e

Download Submit
memory/2624-15-0x000000001B570000-0x000000001B852000-memory.dmp

Filesize
2.9MB

Download
memory/2624-16-0x0000000002A70000-0x0000000002A78000-memory.dmp

Filesize
32KB

Download
memory/2684-2-0x000007FEF5E23000-0x000007FEF5E24000-memory.dmp

Filesize
4KB

Download
memory/2684-0-0x000007FEF5E23000-0x000007FEF5E24000-memory.dmp

Filesize
4KB

Download
memory/2684-32-0x0000000000A80000-0x0000000000B00000-memory.dmp

Filesize
512KB

Download
memory/2684-33-0x0000000000A80000-0x0000000000B00000-memory.dmp

Filesize
512KB

Download
memory/2684-34-0x0000000001FC0000-0x0000000001FCC000-memory.dmp

Filesize
48KB

Download
memory/2684-1-0x0000000000B20000-0x0000000000B3A000-memory.dmp

Filesize
104KB

Download
memory/2720-7-0x0000000002E30000-0x0000000002EB0000-memory.dmp

Filesize
512KB

Download
memory/2720-8-0x000000001B770000-0x000000001BA52000-memory.dmp

Filesize
2.9MB

Download
memory/2720-9-0x0000000001EF0000-0x0000000001EF8000-memory.dmp

Filesize
32KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads