xworm | 1645991919fd66fed7adc8f19d4600b46fb86b54062c86e76279cb0f74ac8e42

General

Target

SteamCRACKED_patched.exe
Size

656KB
MD5

e013cc772300564eb65f6ebb9d1f10c6
SHA1

9cb8f0419e0127664da18f37737077da06b45a8b
SHA256

1645991919fd66fed7adc8f19d4600b46fb86b54062c86e76279cb0f74ac8e42
SHA512

c3411408609d08434bcd8ef34a3b9bbbc17b670d6400307dd87de9a1ac1c314ca87db2441073c30266ab051b8d3b0485e9399944c6dbd1989ddb8409b676ad43
SSDEEP

6144:PtBmb8WHz0L+GIIIIIIIhIIIIIIIIIIIIIIIU:lXmL

Score

10^/10

xworm execution rat trojan

Malware Config

Extracted

Family

xworm

C2

193.161.193.99:63603

37.4.250.173:63603

Attributes

Install_directory
%AppData%
install_file
XwormV6.exe

Signatures

Detect Xworm Payload 1 IoCs

resource	yara_rule
behavioral2/memory/4996-1-0x0000000000020000-0x0000000000078000-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 4 IoCs

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

execution

PowerShell

T1059.001

pid	Process
1672	powershell.exe
1988	powershell.exe
3280	powershell.exe
1884	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-1-5-21-493223053-2004649691-1575712786-1000\Control Panel\International\Geo\Nation	SteamCRACKED_patched.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\XwormV6.lnk	SteamCRACKED_patched.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\XwormV6.lnk	SteamCRACKED_patched.exe

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

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 8 IoCs

pid	Process
1884	powershell.exe
1884	powershell.exe
1672	powershell.exe
1672	powershell.exe
1988	powershell.exe
1988	powershell.exe
3280	powershell.exe
3280	powershell.exe

Suspicious use of AdjustPrivilegeToken 6 IoCs

description	pid	Process
Token: SeDebugPrivilege	4996	SteamCRACKED_patched.exe
Token: SeDebugPrivilege	1884	powershell.exe
Token: SeDebugPrivilege	1672	powershell.exe
Token: SeDebugPrivilege	1988	powershell.exe
Token: SeDebugPrivilege	3280	powershell.exe
Token: SeDebugPrivilege	4996	SteamCRACKED_patched.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 4996 wrote to memory of 1884	4996	SteamCRACKED_patched.exe	87
PID 4996 wrote to memory of 1884	4996	SteamCRACKED_patched.exe	87
PID 4996 wrote to memory of 1672	4996	SteamCRACKED_patched.exe	92
PID 4996 wrote to memory of 1672	4996	SteamCRACKED_patched.exe	92
PID 4996 wrote to memory of 1988	4996	SteamCRACKED_patched.exe	94
PID 4996 wrote to memory of 1988	4996	SteamCRACKED_patched.exe	94
PID 4996 wrote to memory of 3280	4996	SteamCRACKED_patched.exe	97
PID 4996 wrote to memory of 3280	4996	SteamCRACKED_patched.exe	97

C:\Users\Admin\AppData\Local\Temp\SteamCRACKED_patched.exe
"C:\Users\Admin\AppData\Local\Temp\SteamCRACKED_patched.exe"
1⤵
- Checks computer location settings
- Drops startup file
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4996
- 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\SteamCRACKED_patched.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1884
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'SteamCRACKED_patched.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1672
- 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\XwormV6.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1988
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'XwormV6.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:3280

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1

T1059

PowerShell

1

T1059.001

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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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
f79230cec11014beb41fcdaa6de5b7dd

SHA1
93b734d055ad8755c100c902299c0a545721202e

SHA256
e081e370235afd3bdae1ec646ae76e50633d84b02b123131a83a742b2e4fd089

SHA512
a3bfbae5b74199140651d2088fc962405c0c6692def8183f58fa10a8fa874df1bbb486cf7d784d4728c674931e9e4d2fafc6b403aeea2c3b2a786baa432276a8

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

Filesize
944B

MD5
eb1ad317bd25b55b2bbdce8a28a74a94

SHA1
98a3978be4d10d62e7411946474579ee5bdc5ea6

SHA256
9e94e7c9ac6134ee30e79498558aa1a5a1ac79a643666c3f8922eed215dd3a98

SHA512
d011f266c0240d84470c0f9577cd9e4927309bd19bb38570ca9704ed8e1d159f9bea982a59d3eefef72ce7a10bd81208b82e88ef57c7af587f7437a89769adc0

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_x4gwagge.mrf.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/1884-11-0x00000273DD2B0000-0x00000273DD2D2000-memory.dmp

Filesize
136KB

Download
memory/1884-14-0x00007FF8563B0000-0x00007FF856E71000-memory.dmp

Filesize
10.8MB

Download
memory/1884-17-0x00007FF8563B0000-0x00007FF856E71000-memory.dmp

Filesize
10.8MB

Download
memory/1884-13-0x00007FF8563B0000-0x00007FF856E71000-memory.dmp

Filesize
10.8MB

Download
memory/1884-12-0x00007FF8563B0000-0x00007FF856E71000-memory.dmp

Filesize
10.8MB

Download
memory/4996-0-0x00007FF8563B3000-0x00007FF8563B5000-memory.dmp

Filesize
8KB

Download
memory/4996-1-0x0000000000020000-0x0000000000078000-memory.dmp

Filesize
352KB

Download
memory/4996-56-0x00007FF8563B3000-0x00007FF8563B5000-memory.dmp

Filesize
8KB

Download
memory/4996-57-0x00007FF8563B0000-0x00007FF856E71000-memory.dmp

Filesize
10.8MB

Download
memory/4996-58-0x00007FF8563B0000-0x00007FF856E71000-memory.dmp

Filesize
10.8MB

Download

Analysis

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