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
behavioral2/memory/3620-1-0x0000000000AF0000-0x0000000000B0A000-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
4440	powershell.exe
224	powershell.exe
1884	powershell.exe
4288	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-1-5-21-1294999112-580688058-1763548717-1000\Control Panel\International\Geo\Nation	UCO5J_Excellent2.0.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-1-5-21-1294999112-580688058-1763548717-1000\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
4720	timeout.exe

Suspicious behavior: EnumeratesProcesses 14 IoCs

pid	Process
4440	powershell.exe
4440	powershell.exe
4440	powershell.exe
224	powershell.exe
224	powershell.exe
224	powershell.exe
1884	powershell.exe
1884	powershell.exe
1884	powershell.exe
4288	powershell.exe
4288	powershell.exe
4288	powershell.exe
3620	UCO5J_Excellent2.0.exe
3620	UCO5J_Excellent2.0.exe

Suspicious use of AdjustPrivilegeToken 6 IoCs

description	pid	Process
Token: SeDebugPrivilege	3620	UCO5J_Excellent2.0.exe
Token: SeDebugPrivilege	4440	powershell.exe
Token: SeDebugPrivilege	224	powershell.exe
Token: SeDebugPrivilege	1884	powershell.exe
Token: SeDebugPrivilege	4288	powershell.exe
Token: SeDebugPrivilege	3620	UCO5J_Excellent2.0.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
3620	UCO5J_Excellent2.0.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 3620 wrote to memory of 4440	3620	UCO5J_Excellent2.0.exe	98
PID 3620 wrote to memory of 4440	3620	UCO5J_Excellent2.0.exe	98
PID 3620 wrote to memory of 224	3620	UCO5J_Excellent2.0.exe	101
PID 3620 wrote to memory of 224	3620	UCO5J_Excellent2.0.exe	101
PID 3620 wrote to memory of 1884	3620	UCO5J_Excellent2.0.exe	103
PID 3620 wrote to memory of 1884	3620	UCO5J_Excellent2.0.exe	103
PID 3620 wrote to memory of 4288	3620	UCO5J_Excellent2.0.exe	105
PID 3620 wrote to memory of 4288	3620	UCO5J_Excellent2.0.exe	105
PID 3620 wrote to memory of 1600	3620	UCO5J_Excellent2.0.exe	118
PID 3620 wrote to memory of 1600	3620	UCO5J_Excellent2.0.exe	118
PID 1600 wrote to memory of 4720	1600	cmd.exe	120
PID 1600 wrote to memory of 4720	1600	cmd.exe	120

C:\Users\Admin\AppData\Local\Temp\UCO5J_Excellent2.0.exe
"C:\Users\Admin\AppData\Local\Temp\UCO5J_Excellent2.0.exe"
1⤵
- Checks computer location settings
- 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:3620
- 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:4440
- 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:224
- 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:1884
- 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:4288
- C:\Windows\system32\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmpC99.tmp.bat""
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1600
- - C:\Windows\system32\timeout.exe
    timeout 3
    3⤵
    - Delays execution with timeout.exe
    PID:4720

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

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
dbb22d95851b93abf2afe8fb96a8e544

SHA1
920ec5fdb323537bcf78f7e29a4fc274e657f7a4

SHA256
e1ee9af6b9e3bfd41b7d2c980580bb7427883f1169ed3df4be11293ce7895465

SHA512
16031134458bf312509044a3028be46034c544163c4ca956aee74d2075fbeb5873754d2254dc1d0b573ce1a644336ac4c8bd7147aba100bfdac8c504900ef3fc

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

Filesize
944B

MD5
193da9cb8d0be7847ce2b45366b53316

SHA1
60e76e7eb82dada5867415857690c212b79e66ac

SHA256
0eb4aecb894873b0bd5dc51b20cee93ac8b0e4d8c806931f26397c670232a0f7

SHA512
31844183aecba13ad82bbbe35c5b3a86709faed92aeb0b62f53acedb3cef829cdc8faf384b584cfae8aa7c00ae52b64baaa8c6a061b113ef61866f931d43441a

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_n31h0gvj.iic.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmpC99.tmp.bat

Filesize
169B

MD5
e3188221b6fbebe7ef0ef3a1196eaf07

SHA1
3300088577caa6709d2caf67322338acf778715c

SHA256
2c4f09acac4259cf100d03bb2f45b3a21587435a9ebf18f6ed7a10177e62d3a0

SHA512
e1f370178311aa57c12c19de094fe5b1d70b9b0244fb0ae294e86f1e5b516ffa8b110fd8844ff4adb821ddbf04c7e0167aa7501ed43f2b7cd471b051a6faedef

Download Submit
memory/3620-0-0x00007FFB2FE33000-0x00007FFB2FE35000-memory.dmp

Filesize
8KB

Download
memory/3620-2-0x00007FFB2FE33000-0x00007FFB2FE35000-memory.dmp

Filesize
8KB

Download
memory/3620-1-0x0000000000AF0000-0x0000000000B0A000-memory.dmp

Filesize
104KB

Download
memory/3620-56-0x00007FFB2FE30000-0x00007FFB308F1000-memory.dmp

Filesize
10.8MB

Download
memory/3620-57-0x00007FFB2FE30000-0x00007FFB308F1000-memory.dmp

Filesize
10.8MB

Download
memory/3620-59-0x0000000001270000-0x000000000127C000-memory.dmp

Filesize
48KB

Download
memory/3620-67-0x00007FFB2FE30000-0x00007FFB308F1000-memory.dmp

Filesize
10.8MB

Download
memory/4440-13-0x00007FFB2FE30000-0x00007FFB308F1000-memory.dmp

Filesize
10.8MB

Download
memory/4440-14-0x00007FFB2FE30000-0x00007FFB308F1000-memory.dmp

Filesize
10.8MB

Download
memory/4440-17-0x00007FFB2FE30000-0x00007FFB308F1000-memory.dmp

Filesize
10.8MB

Download
memory/4440-8-0x00000202EA220000-0x00000202EA242000-memory.dmp

Filesize
136KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads