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/1352-1-0x0000000000700000-0x0000000000730000-memory.dmp	family_xworm
behavioral2/files/0x000f000000023bae-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
4136	powershell.exe
2888	powershell.exe
4064	powershell.exe
3348	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-1-5-21-3181990009-820930284-137514597-1000\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 3 IoCs

pid	Process
1472	sys-32.exe
4268	sys-32.exe
2804	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-1-5-21-3181990009-820930284-137514597-1000\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
2028	schtasks.exe

Suspicious behavior: EnumeratesProcesses 9 IoCs

pid	Process
2888	powershell.exe
2888	powershell.exe
4064	powershell.exe
4064	powershell.exe
3348	powershell.exe
3348	powershell.exe
4136	powershell.exe
4136	powershell.exe
1352	78423879243879234879423879243879342847932243897.exe

Suspicious use of AdjustPrivilegeToken 9 IoCs

description	pid	Process
Token: SeDebugPrivilege	1352	78423879243879234879423879243879342847932243897.exe
Token: SeDebugPrivilege	2888	powershell.exe
Token: SeDebugPrivilege	4064	powershell.exe
Token: SeDebugPrivilege	3348	powershell.exe
Token: SeDebugPrivilege	4136	powershell.exe
Token: SeDebugPrivilege	1352	78423879243879234879423879243879342847932243897.exe
Token: SeDebugPrivilege	1472	sys-32.exe
Token: SeDebugPrivilege	4268	sys-32.exe
Token: SeDebugPrivilege	2804	sys-32.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1352	78423879243879234879423879243879342847932243897.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 1352 wrote to memory of 2888	1352	78423879243879234879423879243879342847932243897.exe	94
PID 1352 wrote to memory of 2888	1352	78423879243879234879423879243879342847932243897.exe	94
PID 1352 wrote to memory of 4064	1352	78423879243879234879423879243879342847932243897.exe	98
PID 1352 wrote to memory of 4064	1352	78423879243879234879423879243879342847932243897.exe	98
PID 1352 wrote to memory of 3348	1352	78423879243879234879423879243879342847932243897.exe	100
PID 1352 wrote to memory of 3348	1352	78423879243879234879423879243879342847932243897.exe	100
PID 1352 wrote to memory of 4136	1352	78423879243879234879423879243879342847932243897.exe	103
PID 1352 wrote to memory of 4136	1352	78423879243879234879423879243879342847932243897.exe	103
PID 1352 wrote to memory of 2028	1352	78423879243879234879423879243879342847932243897.exe	105
PID 1352 wrote to memory of 2028	1352	78423879243879234879423879243879342847932243897.exe	105

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:1352
- 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:2888
- 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:4064
- 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:3348
- 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:4136
- 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:2028

C:\ProgramData\sys-32.exe
C:\ProgramData\sys-32.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:1472

C:\ProgramData\sys-32.exe
C:\ProgramData\sys-32.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:4268

C:\ProgramData\sys-32.exe
C:\ProgramData\sys-32.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:2804

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
6d42b6da621e8df5674e26b799c8e2aa

SHA1
ab3ce1327ea1eeedb987ec823d5e0cb146bafa48

SHA256
5ab6a1726f425c6d0158f55eb8d81754ddedd51e651aa0a899a29b7a58619c4c

SHA512
53faffbda8a835bc1143e894c118c15901a5fd09cfc2224dd2f754c06dc794897315049a579b9a8382d4564f071576045aaaf824019b7139d939152dca38ce29

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

Filesize
944B

MD5
2117cf9865e42aacdfc8925e05fe4031

SHA1
f89be0d1409b864d85da2479dbcf4382b9a8e888

SHA256
97ed8e4e2f74329c27b63cc9b72b4af1cdc51c4dc014725b80b51da93b91192d

SHA512
83e12e1658ae4bf6b89edaa04e3e81492b9d25990745ab429ebf861915826512213ac9accc1323a5f3d71a821c07ff9010aa8772eb6b0bf6a93649b3ca112166

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

Filesize
944B

MD5
348cb3ce77d0f65a917f98482ef5476e

SHA1
57d0da6d0ba132c7db3d92a374d144eb5fb1aa75

SHA256
08f4e8e6a5ef01871fd729e9ffe39a8dcd8ff757acdb0d8fddee6df6a31040be

SHA512
84ebd8c00d6f87b478d713c8ed9233c8d3fb7817a1fb65959b04a569ab77a671516408bdc4d60b14caf2283c4bd0d9f2d35d1b2674c41fcf093ad3d584869b5b

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_m4dopghz.be1.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/1352-56-0x00007FFBD86B3000-0x00007FFBD86B5000-memory.dmp

Filesize
8KB

Download
memory/1352-0-0x00007FFBD86B3000-0x00007FFBD86B5000-memory.dmp

Filesize
8KB

Download
memory/1352-57-0x00007FFBD86B0000-0x00007FFBD9171000-memory.dmp

Filesize
10.8MB

Download
memory/1352-58-0x00007FFBD86B0000-0x00007FFBD9171000-memory.dmp

Filesize
10.8MB

Download
memory/1352-1-0x0000000000700000-0x0000000000730000-memory.dmp

Filesize
192KB

Download
memory/2888-17-0x00007FFBD86B0000-0x00007FFBD9171000-memory.dmp

Filesize
10.8MB

Download
memory/2888-14-0x00007FFBD86B0000-0x00007FFBD9171000-memory.dmp

Filesize
10.8MB

Download
memory/2888-13-0x00007FFBD86B0000-0x00007FFBD9171000-memory.dmp

Filesize
10.8MB

Download
memory/2888-12-0x00007FFBD86B0000-0x00007FFBD9171000-memory.dmp

Filesize
10.8MB

Download
memory/2888-7-0x000001C05B710000-0x000001C05B732000-memory.dmp

Filesize
136KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads