xworm | aa6c3a8447e5177e7502c684e408c97f439fd8efb998169ceef1c7d7e7810dd7

Analysis

max time kernel
93s
max time network
108s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
09/11/2024, 11:15

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General

Target
aa6c3a8447e5177e7502c684e408c97f439fd8efb998169ceef1c7d7e7810dd7N.exe
Size 39KB
Sample241109-ncxp9asmh1
SHA256 aa6c3a8447e5177e7502c684e408c97f439fd8efb998169ceef1c7d7e7810dd7
MD5 a0cb0c4f5fed726aa8c95bbd2f230d60
SHA1 a1cdabf75a9a37ca9250337dbad3fe6c0b99d20b
SHA512 85882fbdc65af89f0616df7c7c16e1ec826dc87ebbd3fb0eb15d8ed1f6f48a82861d07f3a702be1f07933ccb9cbf48cdd4511010b75c2541816003d1b4c56eba
SSDEEP 768:eHDw0pF163l6YhlLJKuuwhSYypufFWPa9bk6POwhwambf:QDw0pF163swVJKuuwhSjEFv9bk6POw+/
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

xworm execution persistence rat trojan

Malware Config

Extracted

Family

xworm

Version

23.ip.gl.ply.gg:29086

Mutex

X99qeOPMKBAU6tM7

Attributes

Install_directory
%ProgramData%
install_file
System Settings Brokes.exe

aes.plain

Signatures

Detect Xworm Payload 2 IoCs

resource	yara_rule
behavioral2/memory/2020-1-0x0000000000940000-0x0000000000950000-memory.dmp	family_xworm
behavioral2/files/0x000f000000023b4f-58.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
3540	powershell.exe
964	powershell.exe
1808	powershell.exe
4908	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-1-5-21-3350944739-639801879-157714471-1000\Control Panel\International\Geo\Nation	aa6c3a8447e5177e7502c684e408c97f439fd8efb998169ceef1c7d7e7810dd7N.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\System Settings Brokes.lnk	aa6c3a8447e5177e7502c684e408c97f439fd8efb998169ceef1c7d7e7810dd7N.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\System Settings Brokes.lnk	aa6c3a8447e5177e7502c684e408c97f439fd8efb998169ceef1c7d7e7810dd7N.exe

Executes dropped EXE 2 IoCs

pid	Process
4924	System Settings Brokes.exe
4108	System Settings Brokes.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-1-5-21-3350944739-639801879-157714471-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\System Settings Brokes = "C:\\ProgramData\\System Settings Brokes.exe"	aa6c3a8447e5177e7502c684e408c97f439fd8efb998169ceef1c7d7e7810dd7N.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
264	schtasks.exe

Suspicious behavior: EnumeratesProcesses 9 IoCs

pid	Process
4908	powershell.exe
4908	powershell.exe
3540	powershell.exe
3540	powershell.exe
964	powershell.exe
964	powershell.exe
1808	powershell.exe
1808	powershell.exe
2020	aa6c3a8447e5177e7502c684e408c97f439fd8efb998169ceef1c7d7e7810dd7N.exe

Suspicious use of AdjustPrivilegeToken 8 IoCs

description	pid	Process
Token: SeDebugPrivilege	2020	aa6c3a8447e5177e7502c684e408c97f439fd8efb998169ceef1c7d7e7810dd7N.exe
Token: SeDebugPrivilege	4908	powershell.exe
Token: SeDebugPrivilege	3540	powershell.exe
Token: SeDebugPrivilege	964	powershell.exe
Token: SeDebugPrivilege	1808	powershell.exe
Token: SeDebugPrivilege	2020	aa6c3a8447e5177e7502c684e408c97f439fd8efb998169ceef1c7d7e7810dd7N.exe
Token: SeDebugPrivilege	4924	System Settings Brokes.exe
Token: SeDebugPrivilege	4108	System Settings Brokes.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2020	aa6c3a8447e5177e7502c684e408c97f439fd8efb998169ceef1c7d7e7810dd7N.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 2020 wrote to memory of 4908	2020	aa6c3a8447e5177e7502c684e408c97f439fd8efb998169ceef1c7d7e7810dd7N.exe	89
PID 2020 wrote to memory of 4908	2020	aa6c3a8447e5177e7502c684e408c97f439fd8efb998169ceef1c7d7e7810dd7N.exe	89
PID 2020 wrote to memory of 3540	2020	aa6c3a8447e5177e7502c684e408c97f439fd8efb998169ceef1c7d7e7810dd7N.exe	95
PID 2020 wrote to memory of 3540	2020	aa6c3a8447e5177e7502c684e408c97f439fd8efb998169ceef1c7d7e7810dd7N.exe	95
PID 2020 wrote to memory of 964	2020	aa6c3a8447e5177e7502c684e408c97f439fd8efb998169ceef1c7d7e7810dd7N.exe	97
PID 2020 wrote to memory of 964	2020	aa6c3a8447e5177e7502c684e408c97f439fd8efb998169ceef1c7d7e7810dd7N.exe	97
PID 2020 wrote to memory of 1808	2020	aa6c3a8447e5177e7502c684e408c97f439fd8efb998169ceef1c7d7e7810dd7N.exe	99
PID 2020 wrote to memory of 1808	2020	aa6c3a8447e5177e7502c684e408c97f439fd8efb998169ceef1c7d7e7810dd7N.exe	99
PID 2020 wrote to memory of 264	2020	aa6c3a8447e5177e7502c684e408c97f439fd8efb998169ceef1c7d7e7810dd7N.exe	103
PID 2020 wrote to memory of 264	2020	aa6c3a8447e5177e7502c684e408c97f439fd8efb998169ceef1c7d7e7810dd7N.exe	103

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\aa6c3a8447e5177e7502c684e408c97f439fd8efb998169ceef1c7d7e7810dd7N.exe
"C:\Users\Admin\AppData\Local\Temp\aa6c3a8447e5177e7502c684e408c97f439fd8efb998169ceef1c7d7e7810dd7N.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:2020
- 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\aa6c3a8447e5177e7502c684e408c97f439fd8efb998169ceef1c7d7e7810dd7N.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:4908
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'aa6c3a8447e5177e7502c684e408c97f439fd8efb998169ceef1c7d7e7810dd7N.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:3540
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionPath 'C:\ProgramData\System Settings Brokes.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:964
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'System Settings Brokes.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1808
- C:\Windows\System32\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "System Settings Brokes" /tr "C:\ProgramData\System Settings Brokes.exe"
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:264

C:\ProgramData\System Settings Brokes.exe
"C:\ProgramData\System Settings Brokes.exe"
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:4924

C:\ProgramData\System Settings Brokes.exe
"C:\ProgramData\System Settings Brokes.exe"
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:4108

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

PowerShell

T1059.001

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

System Settings Brokes.exe

Path C:\ProgramData\System Settings Brokes.exe
Size 39KB
SHA256 aa6c3a8447e5177e7502c684e408c97f439fd8efb998169ceef1c7d7e7810dd7
MD5 a0cb0c4f5fed726aa8c95bbd2f230d60
SHA1 a1cdabf75a9a37ca9250337dbad3fe6c0b99d20b
SHA512 85882fbdc65af89f0616df7c7c16e1ec826dc87ebbd3fb0eb15d8ed1f6f48a82861d07f3a702be1f07933ccb9cbf48cdd4511010b75c2541816003d1b4c56eba
SSDEEP 768:eHDw0pF163l6YhlLJKuuwhSYypufFWPa9bk6POwhwambf:QDw0pF163swVJKuuwhSjEFv9bk6POw+/
MD5 SHA1 SHA512 SSDEEP

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System Settings Brokes.exe.log

Path C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\System Settings Brokes.exe.log
Size 654B
SHA256 e1b91642d85d98124a6a31f710e137ab7fd90dec30e74a05ab7fcf3b7887dced
MD5 2ff39f6c7249774be85fd60a8f9a245e
SHA1 684ff36b31aedc1e587c8496c02722c6698c1c4e
SHA512 1d7e8b92ef4afd463d62cfa7e8b9d1799db5bf2a263d3cd7840df2e0a1323d24eb595b5f8eb615c6cb15f9e3a7b4fc99f8dd6a3d34479222e966ec708998aed1
MD5 SHA1 SHA512

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powershell.exe.log

Path C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\powershell.exe.log
Size 2KB
SHA256 84739c608a73509419748e4e20e6cc4e1846056c3fe1929a8300d5a1a488202f
MD5 d85ba6ff808d9e5444a4b369f5bc2730
SHA1 31aa9d96590fff6981b315e0b391b575e4c0804a
SHA512 8c414eb55b45212af385accc16d9d562adba2123583ce70d22b91161fe878683845512a78f04dedd4ea98ed9b174dbfa98cf696370598ad8e6fbd1e714f1f249
MD5 SHA1 SHA512

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StartupProfileData-NonInteractive

Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
Size 944B
SHA256 f97ff12a8abf4bf88bb6497bd2ac2da12628c8847a8ba5a9026bdbb76507cdfb
MD5 77d622bb1a5b250869a3238b9bc1402b
SHA1 d47f4003c2554b9dfc4c16f22460b331886b191b
SHA512 d6789b5499f23c9035375a102271e17a8a82e57d6f5312fa24242e08a83efdeb8becb7622f55c4cf1b89c7d864b445df11f4d994cf7e2f87a900535bcca12fd9
MD5 SHA1 SHA512

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StartupProfileData-NonInteractive

Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
Size 944B
SHA256 c4d16552769ca1762f6867bce85589c645ac3dc490b650083d74f853f898cfab
MD5 5cfe303e798d1cc6c1dab341e7265c15
SHA1 cd2834e05191a24e28a100f3f8114d5a7708dc7c
SHA512 ef151bbe0033a2caf2d40aff74855a3f42c8171e05a11c8ce93c7039d9430482c43fe93d9164ee94839aff253cad774dbf619dde9a8af38773ca66d59ac3400e
MD5 SHA1 SHA512

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StartupProfileData-NonInteractive

Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
Size 944B
SHA256 322404d9f86d95f8b9833ad42f89f1ac6b00c74a6bbac26f8be0dfbcb6789965
MD5 f9881391e14a2d01c7dfb07be670345d
SHA1 8b262cd2e0c5dc2ff93d4663692bbf0bb6d1d84c
SHA512 f3e6c1cabb8b85e1ea8d5375b99987f44bb8cef88220bb213eaa06676322ee86d267be7de11e7e53188e98e291572c630708e53713a1e3859b765c29d062b4ec
MD5 SHA1 SHA512

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__PSScriptPolicyTest_jdjju0mh.ake.ps1

Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_jdjju0mh.ake.ps1
Size 60B
SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
MD5 d17fe0a3f47be24a6453e9ef58c94641
SHA1 6ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA512 5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82
MD5 SHA1 SHA512

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memory/2020-1-0x0000000000940000-0x0000000000950000-memory.dmp

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memory/2020-0-0x00007FFF8AD03000-0x00007FFF8AD05000-memory.dmp

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memory/2020-60-0x00007FFF8AD00000-0x00007FFF8B7C1000-memory.dmp

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memory/2020-57-0x00007FFF8AD00000-0x00007FFF8B7C1000-memory.dmp

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memory/4908-12-0x00007FFF8AD00000-0x00007FFF8B7C1000-memory.dmp

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memory/4908-18-0x00007FFF8AD00000-0x00007FFF8B7C1000-memory.dmp

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memory/4908-15-0x00007FFF8AD00000-0x00007FFF8B7C1000-memory.dmp

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memory/4908-14-0x00007FFF8AD00000-0x00007FFF8B7C1000-memory.dmp

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memory/4908-13-0x00007FFF8AD00000-0x00007FFF8B7C1000-memory.dmp

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memory/4908-2-0x00000202E8690000-0x00000202E86B2000-memory.dmp

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