xworm | 00956e3a55867b348d29da5f04cf6fb51e85872389ce6dc5f4015a958c575fb3

General

Target

00956e3a55867b348d29da5f04cf6fb51e85872389ce6dc5f4015a958c575fb3.exe
Size

137KB
MD5

1a925fce50787a5028b73dd32e0c7dce
SHA1

7205d5c3d7efbc5805eb0b343a1bc83903e7589c
SHA256

00956e3a55867b348d29da5f04cf6fb51e85872389ce6dc5f4015a958c575fb3
SHA512

ceec3fa381bbcb32fb520b876fac67defc2712fcf7dcbf4a69d50a227c8f81f1cbb3aac03fc0f2ac007105b9b378c5a1c405ec2b326bf284795c0ae0e85d93a8
SSDEEP

3072:6fjh7Fv9fjOwiBz65/M6If+3Js+3JFkKeTno:8hJv9AxBt25

Score

10^/10

xworm execution persistence rat trojan

Malware Config

Extracted

Family

xworm

Version

5.0

C2

147.185.221.23:48450

Mutex

2YsFPOHVMLfmF9px

Attributes

Install_directory
%AppData%
install_file
Update.exe

aes.plain

Signatures

Detect Xworm Payload 2 IoCs

resource	yara_rule
behavioral2/memory/4108-1-0x00000000008E0000-0x0000000000908000-memory.dmp	family_xworm
behavioral2/files/0x000c000000023c7e-59.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
3664	powershell.exe
2328	powershell.exe
2608	powershell.exe
2920	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-1-5-21-1045960512-3948844814-3059691613-1000\Control Panel\International\Geo\Nation	00956e3a55867b348d29da5f04cf6fb51e85872389ce6dc5f4015a958c575fb3.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Update.lnk	00956e3a55867b348d29da5f04cf6fb51e85872389ce6dc5f4015a958c575fb3.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Update.lnk	00956e3a55867b348d29da5f04cf6fb51e85872389ce6dc5f4015a958c575fb3.exe

Executes dropped EXE 3 IoCs

pid	Process
4292	Update.exe
4280	Update.exe
2392	Update.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-1-5-21-1045960512-3948844814-3059691613-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Update = "C:\\Users\\Admin\\AppData\\Roaming\\Update.exe"	00956e3a55867b348d29da5f04cf6fb51e85872389ce6dc5f4015a958c575fb3.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
4848	schtasks.exe

Suspicious behavior: EnumeratesProcesses 9 IoCs

pid	Process
3664	powershell.exe
3664	powershell.exe
2328	powershell.exe
2328	powershell.exe
2608	powershell.exe
2608	powershell.exe
2920	powershell.exe
2920	powershell.exe
4108	00956e3a55867b348d29da5f04cf6fb51e85872389ce6dc5f4015a958c575fb3.exe

Suspicious use of AdjustPrivilegeToken 9 IoCs

description	pid	Process
Token: SeDebugPrivilege	4108	00956e3a55867b348d29da5f04cf6fb51e85872389ce6dc5f4015a958c575fb3.exe
Token: SeDebugPrivilege	3664	powershell.exe
Token: SeDebugPrivilege	2328	powershell.exe
Token: SeDebugPrivilege	2608	powershell.exe
Token: SeDebugPrivilege	2920	powershell.exe
Token: SeDebugPrivilege	4108	00956e3a55867b348d29da5f04cf6fb51e85872389ce6dc5f4015a958c575fb3.exe
Token: SeDebugPrivilege	4292	Update.exe
Token: SeDebugPrivilege	4280	Update.exe
Token: SeDebugPrivilege	2392	Update.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4108	00956e3a55867b348d29da5f04cf6fb51e85872389ce6dc5f4015a958c575fb3.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 4108 wrote to memory of 3664	4108	00956e3a55867b348d29da5f04cf6fb51e85872389ce6dc5f4015a958c575fb3.exe	90
PID 4108 wrote to memory of 3664	4108	00956e3a55867b348d29da5f04cf6fb51e85872389ce6dc5f4015a958c575fb3.exe	90
PID 4108 wrote to memory of 2328	4108	00956e3a55867b348d29da5f04cf6fb51e85872389ce6dc5f4015a958c575fb3.exe	94
PID 4108 wrote to memory of 2328	4108	00956e3a55867b348d29da5f04cf6fb51e85872389ce6dc5f4015a958c575fb3.exe	94
PID 4108 wrote to memory of 2608	4108	00956e3a55867b348d29da5f04cf6fb51e85872389ce6dc5f4015a958c575fb3.exe	96
PID 4108 wrote to memory of 2608	4108	00956e3a55867b348d29da5f04cf6fb51e85872389ce6dc5f4015a958c575fb3.exe	96
PID 4108 wrote to memory of 2920	4108	00956e3a55867b348d29da5f04cf6fb51e85872389ce6dc5f4015a958c575fb3.exe	99
PID 4108 wrote to memory of 2920	4108	00956e3a55867b348d29da5f04cf6fb51e85872389ce6dc5f4015a958c575fb3.exe	99
PID 4108 wrote to memory of 4848	4108	00956e3a55867b348d29da5f04cf6fb51e85872389ce6dc5f4015a958c575fb3.exe	103
PID 4108 wrote to memory of 4848	4108	00956e3a55867b348d29da5f04cf6fb51e85872389ce6dc5f4015a958c575fb3.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\00956e3a55867b348d29da5f04cf6fb51e85872389ce6dc5f4015a958c575fb3.exe
"C:\Users\Admin\AppData\Local\Temp\00956e3a55867b348d29da5f04cf6fb51e85872389ce6dc5f4015a958c575fb3.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:4108
- 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\00956e3a55867b348d29da5f04cf6fb51e85872389ce6dc5f4015a958c575fb3.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:3664
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess '00956e3a55867b348d29da5f04cf6fb51e85872389ce6dc5f4015a958c575fb3.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2328
- 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\Update.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2608
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'Update.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2920
- C:\Windows\System32\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "Update" /tr "C:\Users\Admin\AppData\Roaming\Update.exe"
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:4848

C:\Users\Admin\AppData\Roaming\Update.exe
C:\Users\Admin\AppData\Roaming\Update.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:4292

C:\Users\Admin\AppData\Roaming\Update.exe
C:\Users\Admin\AppData\Roaming\Update.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:4280

C:\Users\Admin\AppData\Roaming\Update.exe
C:\Users\Admin\AppData\Roaming\Update.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:2392

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\Update.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
8ab6456a8ec71255cb9ead0bb5d27767

SHA1
bc9ff860086488478e7716f7ac4421e8f69795fb

SHA256
bcb14f15fbe23bf51a657c69b24f09cd51e33a2530f89ad17c44f660769611e2

SHA512
87c5368dbd7c85f341edf8992d8b1c87984f9a3549a4802c6054da4e12a8674f10f56d03afc1a72b2cfc40895150d3b0f4d9d4c355c79cdf364ace35eb8ebf15

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_xt1jcefd.rbw.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
C:\Users\Admin\AppData\Roaming\Update.exe

Filesize
137KB

MD5
1a925fce50787a5028b73dd32e0c7dce

SHA1
7205d5c3d7efbc5805eb0b343a1bc83903e7589c

SHA256
00956e3a55867b348d29da5f04cf6fb51e85872389ce6dc5f4015a958c575fb3

SHA512
ceec3fa381bbcb32fb520b876fac67defc2712fcf7dcbf4a69d50a227c8f81f1cbb3aac03fc0f2ac007105b9b378c5a1c405ec2b326bf284795c0ae0e85d93a8

Download Submit
memory/3664-12-0x00007FFB768C0000-0x00007FFB77381000-memory.dmp

Filesize
10.8MB

Download
memory/3664-17-0x00007FFB768C0000-0x00007FFB77381000-memory.dmp

Filesize
10.8MB

Download
memory/3664-14-0x00007FFB768C0000-0x00007FFB77381000-memory.dmp

Filesize
10.8MB

Download
memory/3664-13-0x00007FFB768C0000-0x00007FFB77381000-memory.dmp

Filesize
10.8MB

Download
memory/3664-11-0x000001734FAB0000-0x000001734FAD2000-memory.dmp

Filesize
136KB

Download
memory/4108-0-0x00007FFB768C3000-0x00007FFB768C5000-memory.dmp

Filesize
8KB

Download
memory/4108-56-0x00007FFB768C0000-0x00007FFB77381000-memory.dmp

Filesize
10.8MB

Download
memory/4108-57-0x00007FFB768C3000-0x00007FFB768C5000-memory.dmp

Filesize
8KB

Download
memory/4108-58-0x00007FFB768C0000-0x00007FFB77381000-memory.dmp

Filesize
10.8MB

Download
memory/4108-1-0x00000000008E0000-0x0000000000908000-memory.dmp

Filesize
160KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads