xworm | 42101b053272c4cb236c059a6a4b168b48e747d59819e28998736db1e8580f64

General

Target

78423879243879234879423879243879342847932243897.exe
Size

167KB
MD5

6d9feaf76fb62e070d958c0170dc1fd9
SHA1

d3c9de15d3f268edc65bf0000a8bdb23d6eb8487
SHA256

42101b053272c4cb236c059a6a4b168b48e747d59819e28998736db1e8580f64
SHA512

6e28413715712aa91859d941ff3d16ca4a2a05ff745f30cf5b34cc1cb87a72b0985a4f525867a5abfc980abf75d59ce9c025e894565040a03deb40410ac68c5a
SSDEEP

3072:Fx9KDUpvI+bkT8wDOP1qBz65/M6If+3Js+3JFkKeTnY:F2DU9pbbqxBt25

Score

10^/10

xworm execution persistence rat trojan

Malware Config

Extracted

Family

xworm

C2

45.88.91.55:8893

Attributes

Install_directory
%ProgramData%
install_file
sys-32.exe

Signatures

Detect Xworm Payload 2 IoCs

resource	yara_rule
behavioral2/memory/5716-1-0x0000000000940000-0x0000000000970000-memory.dmp	family_xworm
behavioral2/files/0x000f00000001e695-59.dat	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
6072	powershell.exe
1604	powershell.exe
5612	powershell.exe
8	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	78423879243879234879423879243879342847932243897.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\sys-32.lnk	78423879243879234879423879243879342847932243897.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\sys-32.lnk	78423879243879234879423879243879342847932243897.exe

Executes dropped EXE 2 IoCs

pid	Process
5640	sys-32.exe
480	sys-32.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\sys-32 = "C:\\ProgramData\\sys-32.exe"	78423879243879234879423879243879342847932243897.exe

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

System Information Discovery
T1082

Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence execution

Scheduled Task

T1053.005

pid	Process
3516	schtasks.exe

Suspicious behavior: EnumeratesProcesses 10 IoCs

pid	Process
8	powershell.exe
8	powershell.exe
6072	powershell.exe
6072	powershell.exe
1604	powershell.exe
1604	powershell.exe
1604	powershell.exe
5612	powershell.exe
5612	powershell.exe
5716	78423879243879234879423879243879342847932243897.exe

Suspicious use of AdjustPrivilegeToken 8 IoCs

description	pid	Process
Token: SeDebugPrivilege	5716	78423879243879234879423879243879342847932243897.exe
Token: SeDebugPrivilege	8	powershell.exe
Token: SeDebugPrivilege	6072	powershell.exe
Token: SeDebugPrivilege	1604	powershell.exe
Token: SeDebugPrivilege	5612	powershell.exe
Token: SeDebugPrivilege	5716	78423879243879234879423879243879342847932243897.exe
Token: SeDebugPrivilege	5640	sys-32.exe
Token: SeDebugPrivilege	480	sys-32.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
5716	78423879243879234879423879243879342847932243897.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 5716 wrote to memory of 8	5716	78423879243879234879423879243879342847932243897.exe	97
PID 5716 wrote to memory of 8	5716	78423879243879234879423879243879342847932243897.exe	97
PID 5716 wrote to memory of 6072	5716	78423879243879234879423879243879342847932243897.exe	100
PID 5716 wrote to memory of 6072	5716	78423879243879234879423879243879342847932243897.exe	100
PID 5716 wrote to memory of 1604	5716	78423879243879234879423879243879342847932243897.exe	103
PID 5716 wrote to memory of 1604	5716	78423879243879234879423879243879342847932243897.exe	103
PID 5716 wrote to memory of 5612	5716	78423879243879234879423879243879342847932243897.exe	105
PID 5716 wrote to memory of 5612	5716	78423879243879234879423879243879342847932243897.exe	105
PID 5716 wrote to memory of 3516	5716	78423879243879234879423879243879342847932243897.exe	107
PID 5716 wrote to memory of 3516	5716	78423879243879234879423879243879342847932243897.exe	107

Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
persistence

Query Registry
T1012

C:\Users\Admin\AppData\Local\Temp\78423879243879234879423879243879342847932243897.exe
"C:\Users\Admin\AppData\Local\Temp\78423879243879234879423879243879342847932243897.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:5716
- 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\78423879243879234879423879243879342847932243897.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:8
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess '78423879243879234879423879243879342847932243897.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:6072
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionPath 'C:\ProgramData\sys-32.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1604
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'sys-32.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:5612
- C:\Windows\System32\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "sys-32" /tr "C:\ProgramData\sys-32.exe"
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:3516

C:\ProgramData\sys-32.exe
C:\ProgramData\sys-32.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:5640

C:\ProgramData\sys-32.exe
C:\ProgramData\sys-32.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:480

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1

T1059

PowerShell

1

T1059.001

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Query Registry

2

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\ProgramData\sys-32.exe

Filesize
167KB

MD5
6d9feaf76fb62e070d958c0170dc1fd9

SHA1
d3c9de15d3f268edc65bf0000a8bdb23d6eb8487

SHA256
42101b053272c4cb236c059a6a4b168b48e747d59819e28998736db1e8580f64

SHA512
6e28413715712aa91859d941ff3d16ca4a2a05ff745f30cf5b34cc1cb87a72b0985a4f525867a5abfc980abf75d59ce9c025e894565040a03deb40410ac68c5a

Download Submit
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\CLR_v4.0\UsageLogs\sys-32.exe.log

Filesize
654B

MD5
2ff39f6c7249774be85fd60a8f9a245e

SHA1
684ff36b31aedc1e587c8496c02722c6698c1c4e

SHA256
e1b91642d85d98124a6a31f710e137ab7fd90dec30e74a05ab7fcf3b7887dced

SHA512
1d7e8b92ef4afd463d62cfa7e8b9d1799db5bf2a263d3cd7840df2e0a1323d24eb595b5f8eb615c6cb15f9e3a7b4fc99f8dd6a3d34479222e966ec708998aed1

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
4e9501355f9b9c29f3e513dd16bccd0f

SHA1
aafec5955d615aebe241e9f4103ead5cbc213b57

SHA256
febe8c795e0d64ebcc0f2d2394e58ce20c30a23991c8196c65b604581b5d2fa4

SHA512
06d9a546a6a250e86d689fb46c46a6f5df374caab0ad8b7914186b696a8891ba2c0dd4f0e67fdd7f60b539d8b20a44df5fecf792bc15f5e05ebb3d5604afa7ca

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

Filesize
944B

MD5
15dde0683cd1ca19785d7262f554ba93

SHA1
d039c577e438546d10ac64837b05da480d06bf69

SHA256
d6fa39eab7ee36f44dc3f9f2839d098433db95c1eba924e4bcf4e5c0d268d961

SHA512
57c0e1b87bc1c136f0d39f3ce64bb8f8274a0491e4ca6e45e5c7f9070aa9d9370c6f590ce37cd600b252df2638d870205249a514c43245ca7ed49017024a4672

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_c5fy0n0y.a5w.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/8-12-0x00007FFE57D60000-0x00007FFE58821000-memory.dmp

Filesize
10.8MB

Download
memory/8-17-0x00007FFE57D60000-0x00007FFE58821000-memory.dmp

Filesize
10.8MB

Download
memory/8-14-0x00007FFE57D60000-0x00007FFE58821000-memory.dmp

Filesize
10.8MB

Download
memory/8-13-0x00007FFE57D60000-0x00007FFE58821000-memory.dmp

Filesize
10.8MB

Download
memory/8-7-0x0000020BDC970000-0x0000020BDC992000-memory.dmp

Filesize
136KB

Download
memory/5716-0-0x00007FFE57D63000-0x00007FFE57D65000-memory.dmp

Filesize
8KB

Download
memory/5716-56-0x00007FFE57D60000-0x00007FFE58821000-memory.dmp

Filesize
10.8MB

Download
memory/5716-57-0x00007FFE57D63000-0x00007FFE57D65000-memory.dmp

Filesize
8KB

Download
memory/5716-58-0x00007FFE57D60000-0x00007FFE58821000-memory.dmp

Filesize
10.8MB

Download
memory/5716-1-0x0000000000940000-0x0000000000970000-memory.dmp

Filesize
192KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads