xworm | a4d5f3471f9106e8a6191a63f0de93110629b5daee52dda0521a9f903009ec59

General

Target

a4d5f3471f9106e8a6191a63f0de93110629b5daee52dda0521a9f903009ec59.exe
Size

40KB
MD5

1f77e5b89607320a472260d4e6a0356b
SHA1

237dd9b8f32b15b75f6b47a1307e13331ced673c
SHA256

a4d5f3471f9106e8a6191a63f0de93110629b5daee52dda0521a9f903009ec59
SHA512

4104cf4cb6cebfe53ca83b76b2febfc2f5124a99519e74a7b1e1b1b4d83699edb7a771401b3528d6823da747f8aff8955a0761c6515077439f60a0416493b340
SSDEEP

768:sy9ZBRUN9LCfVv6hCuuJf27PhfFWPG9/26OOwhijybj:sSTRUN9+9wCuuJfgFv9/26OOw0en

Score

10^/10

xworm execution persistence rat trojan

Malware Config

Extracted

Family

xworm

Version

5.0

C2

it-double.gl.at.ply.gg:37981

Mutex

dIy75BjPnm8W4I1K

Attributes

Install_directory
%LocalAppData%
install_file
USB.exe

aes.plain

Signatures

Detect Xworm Payload 2 IoCs

resource	yara_rule
behavioral2/memory/2540-1-0x0000000000E20000-0x0000000000E30000-memory.dmp	family_xworm
behavioral2/files/0x000a000000023c9c-57.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
3020	powershell.exe
1852	powershell.exe
2212	powershell.exe
3952	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-1-5-21-3442511616-637977696-3186306149-1000\Control Panel\International\Geo\Nation	a4d5f3471f9106e8a6191a63f0de93110629b5daee52dda0521a9f903009ec59.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Windows Recovery.lnk	a4d5f3471f9106e8a6191a63f0de93110629b5daee52dda0521a9f903009ec59.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Windows Recovery.lnk	a4d5f3471f9106e8a6191a63f0de93110629b5daee52dda0521a9f903009ec59.exe

Executes dropped EXE 3 IoCs

pid	Process
3992	Windows Recovery
3468	Windows Recovery
3188	Windows Recovery

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-1-5-21-3442511616-637977696-3186306149-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Windows Recovery = "C:\\Users\\Admin\\AppData\\Local\\Windows Recovery"	a4d5f3471f9106e8a6191a63f0de93110629b5daee52dda0521a9f903009ec59.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
2308	schtasks.exe

Suspicious behavior: EnumeratesProcesses 9 IoCs

pid	Process
3020	powershell.exe
3020	powershell.exe
1852	powershell.exe
1852	powershell.exe
2212	powershell.exe
2212	powershell.exe
3952	powershell.exe
3952	powershell.exe
2540	a4d5f3471f9106e8a6191a63f0de93110629b5daee52dda0521a9f903009ec59.exe

Suspicious use of AdjustPrivilegeToken 9 IoCs

description	pid	Process
Token: SeDebugPrivilege	2540	a4d5f3471f9106e8a6191a63f0de93110629b5daee52dda0521a9f903009ec59.exe
Token: SeDebugPrivilege	3020	powershell.exe
Token: SeDebugPrivilege	1852	powershell.exe
Token: SeDebugPrivilege	2212	powershell.exe
Token: SeDebugPrivilege	3952	powershell.exe
Token: SeDebugPrivilege	2540	a4d5f3471f9106e8a6191a63f0de93110629b5daee52dda0521a9f903009ec59.exe
Token: SeDebugPrivilege	3992	Windows Recovery
Token: SeDebugPrivilege	3468	Windows Recovery
Token: SeDebugPrivilege	3188	Windows Recovery

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2540	a4d5f3471f9106e8a6191a63f0de93110629b5daee52dda0521a9f903009ec59.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 2540 wrote to memory of 3020	2540	a4d5f3471f9106e8a6191a63f0de93110629b5daee52dda0521a9f903009ec59.exe	83
PID 2540 wrote to memory of 3020	2540	a4d5f3471f9106e8a6191a63f0de93110629b5daee52dda0521a9f903009ec59.exe	83
PID 2540 wrote to memory of 1852	2540	a4d5f3471f9106e8a6191a63f0de93110629b5daee52dda0521a9f903009ec59.exe	85
PID 2540 wrote to memory of 1852	2540	a4d5f3471f9106e8a6191a63f0de93110629b5daee52dda0521a9f903009ec59.exe	85
PID 2540 wrote to memory of 2212	2540	a4d5f3471f9106e8a6191a63f0de93110629b5daee52dda0521a9f903009ec59.exe	87
PID 2540 wrote to memory of 2212	2540	a4d5f3471f9106e8a6191a63f0de93110629b5daee52dda0521a9f903009ec59.exe	87
PID 2540 wrote to memory of 3952	2540	a4d5f3471f9106e8a6191a63f0de93110629b5daee52dda0521a9f903009ec59.exe	91
PID 2540 wrote to memory of 3952	2540	a4d5f3471f9106e8a6191a63f0de93110629b5daee52dda0521a9f903009ec59.exe	91
PID 2540 wrote to memory of 2308	2540	a4d5f3471f9106e8a6191a63f0de93110629b5daee52dda0521a9f903009ec59.exe	95
PID 2540 wrote to memory of 2308	2540	a4d5f3471f9106e8a6191a63f0de93110629b5daee52dda0521a9f903009ec59.exe	95

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\a4d5f3471f9106e8a6191a63f0de93110629b5daee52dda0521a9f903009ec59.exe
"C:\Users\Admin\AppData\Local\Temp\a4d5f3471f9106e8a6191a63f0de93110629b5daee52dda0521a9f903009ec59.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:2540
- 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\a4d5f3471f9106e8a6191a63f0de93110629b5daee52dda0521a9f903009ec59.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:3020
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'a4d5f3471f9106e8a6191a63f0de93110629b5daee52dda0521a9f903009ec59.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1852
- 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\Windows Recovery'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2212
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'Windows Recovery'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:3952
- C:\Windows\System32\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "Windows Recovery" /tr "C:\Users\Admin\AppData\Local\Windows Recovery"
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:2308

C:\Users\Admin\AppData\Local\Windows Recovery
"C:\Users\Admin\AppData\Local\Windows Recovery"
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:3992

C:\Users\Admin\AppData\Local\Windows Recovery
"C:\Users\Admin\AppData\Local\Windows Recovery"
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:3468

C:\Users\Admin\AppData\Local\Windows Recovery
"C:\Users\Admin\AppData\Local\Windows Recovery"
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:3188

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:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\Windows Recovery.log

Filesize
654B

MD5
2ff39f6c7249774be85fd60a8f9a245e

SHA1
684ff36b31aedc1e587c8496c02722c6698c1c4e

SHA256
e1b91642d85d98124a6a31f710e137ab7fd90dec30e74a05ab7fcf3b7887dced

SHA512
1d7e8b92ef4afd463d62cfa7e8b9d1799db5bf2a263d3cd7840df2e0a1323d24eb595b5f8eb615c6cb15f9e3a7b4fc99f8dd6a3d34479222e966ec708998aed1

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\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
67e8893616f805af2411e2f4a1411b2a

SHA1
39bf1e1a0ddf46ce7c136972120f512d92827dcd

SHA256
ca0dfe104c1bf27f7e01999fcdabc16c6400c3da937c832c26bdbca322381d31

SHA512
164e911a9935e75c8be1a6ec3d31199a16ba2a1064da6c09d771b2a38dd7fddd142301ef55d67d90f306d3a454a1ce7b72e129ea42e44500b9b8c623a8d98b4d

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

Filesize
944B

MD5
8e70528793b16f5239272a7ca3c78644

SHA1
b7b7c37bbd103f2230605fbbf306ddc07fe1f1cf

SHA256
68ef0d1876040a79527f19c55d1ce51668e775b43ef8d261845b034ea7b6ec57

SHA512
076d644a5a686bb669a4e9b65af79302424c0bdecb43ad05a90e013601234b9be452946fd61acae16f6069a90b45a676867cdb22ad99fa8767ff4c32a15ebc0f

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_i0oncui0.h3g.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
C:\Users\Admin\AppData\Local\Windows Recovery

Filesize
40KB

MD5
1f77e5b89607320a472260d4e6a0356b

SHA1
237dd9b8f32b15b75f6b47a1307e13331ced673c

SHA256
a4d5f3471f9106e8a6191a63f0de93110629b5daee52dda0521a9f903009ec59

SHA512
4104cf4cb6cebfe53ca83b76b2febfc2f5124a99519e74a7b1e1b1b4d83699edb7a771401b3528d6823da747f8aff8955a0761c6515077439f60a0416493b340

Download Submit
memory/2540-55-0x00007FFEF1220000-0x00007FFEF1CE1000-memory.dmp

Filesize
10.8MB

Download
memory/2540-0-0x00007FFEF1223000-0x00007FFEF1225000-memory.dmp

Filesize
8KB

Download
memory/2540-56-0x00007FFEF1220000-0x00007FFEF1CE1000-memory.dmp

Filesize
10.8MB

Download
memory/2540-1-0x0000000000E20000-0x0000000000E30000-memory.dmp

Filesize
64KB

Download
memory/3020-17-0x00007FFEF1220000-0x00007FFEF1CE1000-memory.dmp

Filesize
10.8MB

Download
memory/3020-14-0x00007FFEF1220000-0x00007FFEF1CE1000-memory.dmp

Filesize
10.8MB

Download
memory/3020-13-0x00007FFEF1220000-0x00007FFEF1CE1000-memory.dmp

Filesize
10.8MB

Download
memory/3020-12-0x00007FFEF1220000-0x00007FFEF1CE1000-memory.dmp

Filesize
10.8MB

Download
memory/3020-9-0x00000244A09F0000-0x00000244A0A12000-memory.dmp

Filesize
136KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads