xworm | 3d107b55c9f89d5c0f24f05ef990bc8f342908bef31f84088f516e5954f8609c

General

Target

30258a07cc6d0fa827544493e9036e955056da88d0530efa8cf3535ecbf8e75c.exe
Size

168KB
MD5

651429675c1d86cf068746159aa66b6d
SHA1

aad51d3448cb1e9f337a985ed840a0064d5699ee
SHA256

30258a07cc6d0fa827544493e9036e955056da88d0530efa8cf3535ecbf8e75c
SHA512

397e2a05e8f3d45c04953998a09d76212b38e3dc9073be814cb3010ea94b00733d2557a6e5002b0a2401fb33d62908e794553a6afd31e45b0afe6987806272fb
SSDEEP

3072:gwe+6Rkd+MisaP1JmK6Hw9hEgXEp1NDLfgAiKgD7fYtB2SOEQW40/mmo0ioi:glbRFLsaPfmK6HwXDXsFglf7gya4tm

Score

10^/10

xworm execution persistence rat trojan

Malware Config

Extracted

Family

xworm

Version

3.1

C2

activities-mustang.gl.at.ply.gg:54756

Attributes

Install_directory
%AppData%
install_file
USB.exe

Signatures

Detect Xworm Payload 2 IoCs

resource	yara_rule
behavioral2/files/0x0002000000022a9d-6.dat	family_xworm
behavioral2/memory/1392-17-0x0000000000770000-0x0000000000786000-memory.dmp	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 3 IoCs

Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

execution

PowerShell

T1059.001

pid	Process
4420	powershell.exe
4956	powershell.exe
404	powershell.exe

Checks computer location settings 2 TTPs 2 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-1-5-21-2045521122-590294423-3465680274-1000\Control Panel\International\Geo\Nation	30258a07cc6d0fa827544493e9036e955056da88d0530efa8cf3535ecbf8e75c.exe
Key value queried	\REGISTRY\USER\S-1-5-21-2045521122-590294423-3465680274-1000\Control Panel\International\Geo\Nation	X.exe

Drops startup file 2 IoCs

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

Executes dropped EXE 1 IoCs

pid	Process
1392	X.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-1-5-21-2045521122-590294423-3465680274-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\X = "C:\\Users\\Admin\\AppData\\Roaming\\X.exe"	X.exe

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

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
4956	powershell.exe
4956	powershell.exe
404	powershell.exe
404	powershell.exe
4420	powershell.exe
4420	powershell.exe

Suspicious use of AdjustPrivilegeToken 5 IoCs

description	pid	Process
Token: SeDebugPrivilege	1392	X.exe
Token: SeDebugPrivilege	4956	powershell.exe
Token: SeDebugPrivilege	404	powershell.exe
Token: SeDebugPrivilege	4420	powershell.exe
Token: SeDebugPrivilege	1392	X.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 2008 wrote to memory of 1392	2008	30258a07cc6d0fa827544493e9036e955056da88d0530efa8cf3535ecbf8e75c.exe	89
PID 2008 wrote to memory of 1392	2008	30258a07cc6d0fa827544493e9036e955056da88d0530efa8cf3535ecbf8e75c.exe	89
PID 1392 wrote to memory of 4956	1392	X.exe	97
PID 1392 wrote to memory of 4956	1392	X.exe	97
PID 1392 wrote to memory of 404	1392	X.exe	99
PID 1392 wrote to memory of 404	1392	X.exe	99
PID 1392 wrote to memory of 4420	1392	X.exe	101
PID 1392 wrote to memory of 4420	1392	X.exe	101

C:\Users\Admin\AppData\Local\Temp\30258a07cc6d0fa827544493e9036e955056da88d0530efa8cf3535ecbf8e75c.exe
"C:\Users\Admin\AppData\Local\Temp\30258a07cc6d0fa827544493e9036e955056da88d0530efa8cf3535ecbf8e75c.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2008
- C:\Users\Admin\AppData\Local\Temp\X.exe
  "C:\Users\Admin\AppData\Local\Temp\X.exe"
  2⤵
  - Checks computer location settings
  - Drops startup file
  - Executes dropped EXE
  - Adds Run key to start application
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:1392
- - 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\X.exe'
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:4956
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'X.exe'
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:404
- - 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\Roaming\X.exe'
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:4420

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1

T1059

PowerShell

1

T1059.001

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Query Registry

1

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\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
5f401d33d4b486fb36e1d53777db03f5

SHA1
0580a38a48e61af560588d07ed39a29a5b03ad37

SHA256
73489cbdb768c69a47fa9f1ceb5d877289534a91e4c74884b6e053de56bd6a41

SHA512
e9103e14872f8a9f0956634a5f4009e1982bbdc16f1c6ec5cdec143af60eed1107843fb679b1b55d4565e61eba1197320d05a9f0ed53f1aab7eb41a1cf512c43

Download Submit
C:\Users\Admin\AppData\Local\Temp\X.exe

Filesize
61KB

MD5
2c76b88a912c741f1404b400c1add578

SHA1
13d1b6d341d59aef6833a4123e22484ddb665183

SHA256
5178365164f71d22459d807a5ba61e8d50dd15a4adb4a00b08248c6f141f8074

SHA512
b8f8ae619f7cdf323c4f98e63bea5c3059886792b0c5a41df96a243811bf78df2fec45bf4b459e07c8c564ee2875852ac47eb3c3ad34cf70c8ba27c547163ebe

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_4cafhsn3.ilr.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/404-44-0x000002FB5D590000-0x000002FB5D7AC000-memory.dmp

Filesize
2.1MB

Download
memory/1392-17-0x0000000000770000-0x0000000000786000-memory.dmp

Filesize
88KB

Download
memory/1392-16-0x00007FF995B40000-0x00007FF996601000-memory.dmp

Filesize
10.8MB

Download
memory/1392-62-0x00007FF995B40000-0x00007FF996601000-memory.dmp

Filesize
10.8MB

Download
memory/1392-63-0x00007FF995B40000-0x00007FF996601000-memory.dmp

Filesize
10.8MB

Download
memory/1392-64-0x00007FF995B40000-0x00007FF996601000-memory.dmp

Filesize
10.8MB

Download
memory/2008-19-0x00007FF995B40000-0x00007FF996601000-memory.dmp

Filesize
10.8MB

Download
memory/2008-0-0x00007FF995B43000-0x00007FF995B45000-memory.dmp

Filesize
8KB

Download
memory/2008-12-0x00007FF995B40000-0x00007FF996601000-memory.dmp

Filesize
10.8MB

Download
memory/2008-1-0x0000000000E60000-0x0000000000E90000-memory.dmp

Filesize
192KB

Download
memory/4956-25-0x000001D443B10000-0x000001D443B32000-memory.dmp

Filesize
136KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads