xworm | baa8ace81d5e51f20fea99bf6b8de26c594a2011b670883304e085e5a9847eb2

General

Target

XClient.exe
Size

80KB
MD5

bfa950b37b6a4f8de71af861e677a8b4
SHA1

2ee40bfbf2964d92c82256e5924169295dfdd225
SHA256

07f94f8f6061ba95899914496edc5854aa810de56797d9004875276d60e21ade
SHA512

235b514fac01b24edaef3aeb4209676789b6ba9264a8798cb7ae48c26d2455cdd8f254e92bbba688535acb69fd77b3c0a0a549cf97ece84c235cc74f72234e1a
SSDEEP

1536:EI5NuEGJkEtydWqZQSp1eS+b59gxzhfxdl/5m6qeo//3Oy/4IK4Dax5:Eg1GhtktQGAS+b59cJ4eA/OlINDab

Score

10^/10

xworm execution persistence rat trojan

Malware Config

Extracted

Family

xworm

C2

full-self.gl.at.ply.gg:45212

Attributes

Install_directory
%AppData%
install_file
XClient.exe

Signatures

Detect Xworm Payload 1 IoCs

resource	yara_rule
behavioral4/memory/4520-1-0x0000000000E10000-0x0000000000E2A000-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
4132	powershell.exe
3568	powershell.exe
5088	powershell.exe
4956	powershell.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-1-5-21-1872973762-1326452598-87257502-1000\Software\Microsoft\Windows\CurrentVersion\Run\XClient = "C:\\Users\\Admin\\AppData\\Roaming\\XClient.exe"	XClient.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

evasion

pid	Process
712	timeout.exe

Suspicious behavior: EnumeratesProcesses 9 IoCs

pid	Process
4132	powershell.exe
4132	powershell.exe
3568	powershell.exe
3568	powershell.exe
5088	powershell.exe
5088	powershell.exe
4956	powershell.exe
4956	powershell.exe
4520	XClient.exe

Suspicious use of AdjustPrivilegeToken 6 IoCs

description	pid	Process
Token: SeDebugPrivilege	4520	XClient.exe
Token: SeDebugPrivilege	4132	powershell.exe
Token: SeDebugPrivilege	3568	powershell.exe
Token: SeDebugPrivilege	5088	powershell.exe
Token: SeDebugPrivilege	4956	powershell.exe
Token: SeDebugPrivilege	4520	XClient.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4520	XClient.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 4520 wrote to memory of 4132	4520	XClient.exe	82
PID 4520 wrote to memory of 4132	4520	XClient.exe	82
PID 4520 wrote to memory of 3568	4520	XClient.exe	84
PID 4520 wrote to memory of 3568	4520	XClient.exe	84
PID 4520 wrote to memory of 5088	4520	XClient.exe	86
PID 4520 wrote to memory of 5088	4520	XClient.exe	86
PID 4520 wrote to memory of 4956	4520	XClient.exe	88
PID 4520 wrote to memory of 4956	4520	XClient.exe	88
PID 4520 wrote to memory of 2284	4520	XClient.exe	91
PID 4520 wrote to memory of 2284	4520	XClient.exe	91
PID 2284 wrote to memory of 712	2284	cmd.exe	93
PID 2284 wrote to memory of 712	2284	cmd.exe	93

C:\Users\Admin\AppData\Local\Temp\XClient.exe
"C:\Users\Admin\AppData\Local\Temp\XClient.exe"
1⤵
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4520
- 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:4132
- 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:3568
- 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:5088
- 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:4956
- C:\Windows\system32\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp3081.tmp.bat""
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2284
- - C:\Windows\system32\timeout.exe
    timeout 3
    3⤵
    - Delays execution with timeout.exe
    PID:712

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\Microsoft\CLR_v4.0\UsageLogs\powershell.exe.log

Filesize
2KB

MD5
627073ee3ca9676911bee35548eff2b8

SHA1
4c4b68c65e2cab9864b51167d710aa29ebdcff2e

SHA256
85b280a39fc31ba1e15fb06102a05b8405ff3b82feb181d4170f04e466dd647c

SHA512
3c5f6c03e253b83c57e8d6f0334187dbdcdf4fa549eecd36cbc1322dca6d3ca891dc6a019c49ec2eafb88f82d0434299c31e4dfaab123acb42e0546218f311fb

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

Filesize
944B

MD5
d0a4a3b9a52b8fe3b019f6cd0ef3dad6

SHA1
fed70ce7834c3b97edbd078eccda1e5effa527cd

SHA256
21942e513f223fdad778348fbb20617dd29f986bccd87824c0ae7f15649f3f31

SHA512
1a66f837b4e7fb6346d0500aeacb44902fb8a239bce23416271263eba46fddae58a17075e188ae43eb516c841e02c87e32ebd73256c7cc2c0713d00c35f1761b

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

Filesize
944B

MD5
c9cac54942dfc8bf7960e6780447abca

SHA1
0d34e7352b9973bd18c917eee4b711758c5afb59

SHA256
90329feb0156d8d97fc556c867abcc1dac863ef612cd5a335d2ed695557f215c

SHA512
daf398a5ab9e27dde2b026efea4794ceb770b547da07b5ebcc25d59d47f2cd6ee267f349ecd0936dcfbce928e9d2529e21cca71d2736e4a632d33999c390546f

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

Filesize
944B

MD5
4093e5ab3812960039eba1a814c2ffb0

SHA1
b5e4a98a80be72fccd3cc910e93113d2febef298

SHA256
c0794e2b7036ce5612446a8b15e0c8387773bbc921f63cf8849f8a1f4ef3878c

SHA512
f3555b45aa1a1dd5214716dc81a05905c4ecd5a3e1276d35e08c65623ab1d14d469b3b576a5d9638264c1222d73889d2cc1ee43fb579d9ca3fcddd9f557cac7b

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_rflvwtip.d2k.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmp3081.tmp.bat

Filesize
159B

MD5
b62d6deb1c122cef3590df3983b2da7e

SHA1
f7bfd6dd9eae01c68f6d6bcbd78ef5540a3b2a04

SHA256
206266c19ad98c30aa7bb3dedbd362771c9ba119a14cedba6b232d06a4d87283

SHA512
76333c20d6d6b106a8a81a3070d5aefae57364ea8d450c1ad167f41d6c1f3c4f9f4424c8c2184b3a68cc554b7c0c6279ea0ab6f2fd5fea2f7e2165e632b6ae5c

Download Submit
memory/4132-11-0x00007FF91F150000-0x00007FF91FC12000-memory.dmp

Filesize
10.8MB

Download
memory/4132-14-0x00007FF91F150000-0x00007FF91FC12000-memory.dmp

Filesize
10.8MB

Download
memory/4132-15-0x00007FF91F150000-0x00007FF91FC12000-memory.dmp

Filesize
10.8MB

Download
memory/4132-18-0x00007FF91F150000-0x00007FF91FC12000-memory.dmp

Filesize
10.8MB

Download
memory/4132-13-0x00007FF91F150000-0x00007FF91FC12000-memory.dmp

Filesize
10.8MB

Download
memory/4132-12-0x00007FF91F150000-0x00007FF91FC12000-memory.dmp

Filesize
10.8MB

Download
memory/4132-2-0x00000165D3D90000-0x00000165D3DB2000-memory.dmp

Filesize
136KB

Download
memory/4520-0-0x00007FF91F153000-0x00007FF91F155000-memory.dmp

Filesize
8KB

Download
memory/4520-51-0x00007FF91F150000-0x00007FF91FC12000-memory.dmp

Filesize
10.8MB

Download
memory/4520-52-0x00007FF91F150000-0x00007FF91FC12000-memory.dmp

Filesize
10.8MB

Download
memory/4520-1-0x0000000000E10000-0x0000000000E2A000-memory.dmp

Filesize
104KB

Download
memory/4520-58-0x00007FF91F150000-0x00007FF91FC12000-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