xworm | aa6c3a8447e5177e7502c684e408c97f439fd8efb998169ceef1c7d7e7810dd7

General

Target

aa6c3a8447e5177e7502c684e408c97f439fd8efb998169ceef1c7d7e7810dd7N.exe
Size

39KB
MD5

a0cb0c4f5fed726aa8c95bbd2f230d60
SHA1

a1cdabf75a9a37ca9250337dbad3fe6c0b99d20b
SHA256

aa6c3a8447e5177e7502c684e408c97f439fd8efb998169ceef1c7d7e7810dd7
SHA512

85882fbdc65af89f0616df7c7c16e1ec826dc87ebbd3fb0eb15d8ed1f6f48a82861d07f3a702be1f07933ccb9cbf48cdd4511010b75c2541816003d1b4c56eba
SSDEEP

768:eHDw0pF163l6YhlLJKuuwhSYypufFWPa9bk6POwhwambf:QDw0pF163swVJKuuwhSjEFv9bk6POw+/

Score

10^/10

xworm execution persistence rat trojan

Malware Config

Extracted

Family

xworm

Version

5.0

C2

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

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\System Settings Brokes.exe

Filesize
39KB

MD5
a0cb0c4f5fed726aa8c95bbd2f230d60

SHA1
a1cdabf75a9a37ca9250337dbad3fe6c0b99d20b

SHA256
aa6c3a8447e5177e7502c684e408c97f439fd8efb998169ceef1c7d7e7810dd7

SHA512
85882fbdc65af89f0616df7c7c16e1ec826dc87ebbd3fb0eb15d8ed1f6f48a82861d07f3a702be1f07933ccb9cbf48cdd4511010b75c2541816003d1b4c56eba

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\System Settings Brokes.exe.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
5cfe303e798d1cc6c1dab341e7265c15

SHA1
cd2834e05191a24e28a100f3f8114d5a7708dc7c

SHA256
c4d16552769ca1762f6867bce85589c645ac3dc490b650083d74f853f898cfab

SHA512
ef151bbe0033a2caf2d40aff74855a3f42c8171e05a11c8ce93c7039d9430482c43fe93d9164ee94839aff253cad774dbf619dde9a8af38773ca66d59ac3400e

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

Filesize
944B

MD5
f9881391e14a2d01c7dfb07be670345d

SHA1
8b262cd2e0c5dc2ff93d4663692bbf0bb6d1d84c

SHA256
322404d9f86d95f8b9833ad42f89f1ac6b00c74a6bbac26f8be0dfbcb6789965

SHA512
f3e6c1cabb8b85e1ea8d5375b99987f44bb8cef88220bb213eaa06676322ee86d267be7de11e7e53188e98e291572c630708e53713a1e3859b765c29d062b4ec

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_jdjju0mh.ake.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

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

Filesize
64KB

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

Filesize
8KB

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

Filesize
10.8MB

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

Filesize
10.8MB

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

Filesize
10.8MB

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

Filesize
10.8MB

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

Filesize
10.8MB

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

Filesize
10.8MB

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

Filesize
10.8MB

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

Filesize
136KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads