xworm | 0240fc167d3e9cabeb5a9e707ce52d7842e332e084bef5e22b72fc3ecd3488c0

General

Target

0240fc167d3e9cabeb5a9e707ce52d7842e332e084bef5e22b72fc3ecd3488c0.exe
Size

78KB
MD5

959ac550de9dc34474a8d8b16a050cfd
SHA1

d6ad271189c5ea66b6ac3268b18c05fa26b5f0f0
SHA256

0240fc167d3e9cabeb5a9e707ce52d7842e332e084bef5e22b72fc3ecd3488c0
SHA512

2c2d837164824fc1503a022a43793e5586c08d6b6b633e7fe828289489fad4c90a7c0a9fb3f2b6de093e901e9b957670063107b06b1e1ea474335806955ab735
SSDEEP

1536:HBx2Kk3000uEZf4Tl+XbctEjt8Y50vuzsB1nKzvpmvqmUte4xRZ4T:H+LE00bZ2leMEZlmBIvh/XZ4

Score

10^/10

xworm defense_evasion discovery execution persistence rat trojan

Malware Config

Extracted

Family

xworm

C2

againzamel.zapto.org:1188

damoni.zapto.org:1188

Attributes

Install_directory
%AppData%
install_file
Update.exe

Signatures

Detect Xworm Payload 2 IoCs

resource	yara_rule
behavioral2/files/0x000d000000023b5c-4.dat	family_xworm
behavioral2/memory/4588-12-0x00000000006D0000-0x00000000006E8000-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
2780	powershell.exe
1304	powershell.exe
4748	powershell.exe
3316	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-1-5-21-4089630652-1596403869-279772308-1000\Control Panel\International\Geo\Nation	0240fc167d3e9cabeb5a9e707ce52d7842e332e084bef5e22b72fc3ecd3488c0.exe
Key value queried	\REGISTRY\USER\S-1-5-21-4089630652-1596403869-279772308-1000\Control Panel\International\Geo\Nation	Update.exe

Drops startup file 2 IoCs

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

Executes dropped EXE 3 IoCs

pid	Process
4588	Update.exe
1140	Update.exe
4836	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-1-5-21-4089630652-1596403869-279772308-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Update = "C:\\Users\\Admin\\AppData\\Roaming\\Update.exe"	Update.exe

Looks up external IP address via web service 1 IoCs

Uses a legitimate IP lookup service to find the infected system's external IP.

flow	ioc
16	ip-api.com

Obfuscated Files or Information: Command Obfuscation 1 TTPs
Adversaries may obfuscate content during command execution to impede detection.
defense_evasion

Command Obfuscation
T1027.010
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	0240fc167d3e9cabeb5a9e707ce52d7842e332e084bef5e22b72fc3ecd3488c0.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	powershell.exe

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
2920	schtasks.exe

Suspicious behavior: EnumeratesProcesses 11 IoCs

pid	Process
1616	powershell.exe
1616	powershell.exe
2780	powershell.exe
2780	powershell.exe
1304	powershell.exe
1304	powershell.exe
4748	powershell.exe
4748	powershell.exe
3316	powershell.exe
3316	powershell.exe
4588	Update.exe

Suspicious use of AdjustPrivilegeToken 9 IoCs

description	pid	Process
Token: SeDebugPrivilege	4588	Update.exe
Token: SeDebugPrivilege	1616	powershell.exe
Token: SeDebugPrivilege	2780	powershell.exe
Token: SeDebugPrivilege	1304	powershell.exe
Token: SeDebugPrivilege	4748	powershell.exe
Token: SeDebugPrivilege	3316	powershell.exe
Token: SeDebugPrivilege	4588	Update.exe
Token: SeDebugPrivilege	1140	Update.exe
Token: SeDebugPrivilege	4836	Update.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4588	Update.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 3532 wrote to memory of 1616	3532	0240fc167d3e9cabeb5a9e707ce52d7842e332e084bef5e22b72fc3ecd3488c0.exe	84
PID 3532 wrote to memory of 1616	3532	0240fc167d3e9cabeb5a9e707ce52d7842e332e084bef5e22b72fc3ecd3488c0.exe	84
PID 3532 wrote to memory of 1616	3532	0240fc167d3e9cabeb5a9e707ce52d7842e332e084bef5e22b72fc3ecd3488c0.exe	84
PID 3532 wrote to memory of 4588	3532	0240fc167d3e9cabeb5a9e707ce52d7842e332e084bef5e22b72fc3ecd3488c0.exe	86
PID 3532 wrote to memory of 4588	3532	0240fc167d3e9cabeb5a9e707ce52d7842e332e084bef5e22b72fc3ecd3488c0.exe	86
PID 4588 wrote to memory of 2780	4588	Update.exe	92
PID 4588 wrote to memory of 2780	4588	Update.exe	92
PID 4588 wrote to memory of 1304	4588	Update.exe	95
PID 4588 wrote to memory of 1304	4588	Update.exe	95
PID 4588 wrote to memory of 4748	4588	Update.exe	97
PID 4588 wrote to memory of 4748	4588	Update.exe	97
PID 4588 wrote to memory of 3316	4588	Update.exe	99
PID 4588 wrote to memory of 3316	4588	Update.exe	99
PID 4588 wrote to memory of 2920	4588	Update.exe	101
PID 4588 wrote to memory of 2920	4588	Update.exe	101

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\0240fc167d3e9cabeb5a9e707ce52d7842e332e084bef5e22b72fc3ecd3488c0.exe
"C:\Users\Admin\AppData\Local\Temp\0240fc167d3e9cabeb5a9e707ce52d7842e332e084bef5e22b72fc3ecd3488c0.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3532
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -EncodedCommand "PAAjAHgAcQBqACMAPgBBAGQAZAAtAE0AcABQAHIAZQBmAGUAcgBlAG4AYwBlACAAPAAjAHcAagB3ACMAPgAgAC0ARQB4AGMAbAB1AHMAaQBvAG4AUABhAHQAaAAgAEAAKAAkAGUAbgB2ADoAVQBzAGUAcgBQAHIAbwBmAGkAbABlACwAJABlAG4AdgA6AFMAeQBzAHQAZQBtAEQAcgBpAHYAZQApACAAPAAjAG0AagBlACMAPgAgAC0ARgBvAHIAYwBlACAAPAAjAGMAaQBqACMAPgA="
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1616
- C:\Users\Admin\AppData\Local\Temp\Update.exe
  "C:\Users\Admin\AppData\Local\Temp\Update.exe"
  2⤵
  - Checks computer location settings
  - Drops startup file
  - Executes dropped EXE
  - Adds Run key to start application
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:4588
- - 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\Update.exe'
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:2780
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'Update.exe'
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:1304
- - 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'
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:4748
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'Update.exe'
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:3316
- - 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"
    3⤵
    - Scheduled Task/Job: Scheduled Task
    PID:2920

C:\Users\Admin\AppData\Roaming\Update.exe
C:\Users\Admin\AppData\Roaming\Update.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:1140

C:\Users\Admin\AppData\Roaming\Update.exe
C:\Users\Admin\AppData\Roaming\Update.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:4836

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

Obfuscated Files or Information

1

T1027

Command Obfuscation

1

T1027.010

Credential Access

Discovery

Query Registry

2

T1012

System Information Discovery

2

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

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
22310ad6749d8cc38284aa616efcd100

SHA1
440ef4a0a53bfa7c83fe84326a1dff4326dcb515

SHA256
55b1d8021c4eb4c3c0d75e3ed7a4eb30cd0123e3d69f32eeb596fe4ffec05abf

SHA512
2ef08e2ee15bb86695fe0c10533014ffed76ececc6e579d299d3365fafb7627f53e32e600bb6d872b9f58aca94f8cb7e1e94cdfd14777527f7f0aa019d9c6def

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

Filesize
18KB

MD5
d85e808fdaaf5dd61744a1a0b9e35c9f

SHA1
aa5a08942de2bc2eeeeba4491d27267b0c92e6e7

SHA256
de43e26ab09e1d922fd7fb9e10b7e85a8782d9a9de6176c5e77245f1dee478b8

SHA512
e44e8acd140f1a5a3f5cc24e1dac26ca788c776aacca38cffa81d605cb0cbe138ff5ebec3e1d6e8b412a19e5d845999d04280a2a0c3bbe0440818f228ac82d86

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

Filesize
944B

MD5
9b80cd7a712469a4c45fec564313d9eb

SHA1
6125c01bc10d204ca36ad1110afe714678655f2d

SHA256
5a9e4969c6cdb5d522c81ce55799effb7255c1b0a9966a936d1dc3ff8fe2112d

SHA512
ac280d2623c470c9dec94726a7af0612938723f3c7d60d727eb3c21f17be2f2049f97bc8303558be8b01f94406781ece0ada9a3bc51e930aff20bebb6ca17584

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

Filesize
944B

MD5
ce4540390cc4841c8973eb5a3e9f4f7d

SHA1
2293f30a6f4c9538bc5b06606c10a50ab4ecef8e

SHA256
e834e1da338b9644d538cefd70176768816da2556939c1255d386931bd085105

SHA512
2a3e466cb5a81d2b65256053b768a98321eb3e65ff46353eefc9864f14a391748116f050e7482ddd73a51575bf0a6fc5c673023dade62dbd8b174442bae1cc6b

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

Filesize
73KB

MD5
d7cec6a9ad4510455738ee60758739d7

SHA1
9f935bff03c71d297d2ce3ca9c0ad1675bcf354d

SHA256
f6f746d7b5a8bd106b2b3fddb8839c51f45bf34b58f37ed6ba3b3e4ddc215fb4

SHA512
369b97be0d0793fc53936961e16c71cf016c801bf201dd3420bc87f1b4a9b9383359b22ce075e2d9452cbbcf329887ab62a05dab4854f9afcf61b22b0c4e9ae8

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_x50tzi2e.sdg.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/1616-49-0x0000000008250000-0x00000000088CA000-memory.dmp

Filesize
6.5MB

Download
memory/1616-71-0x0000000075070000-0x0000000075820000-memory.dmp

Filesize
7.7MB

Download
memory/1616-20-0x00000000062C0000-0x0000000006326000-memory.dmp

Filesize
408KB

Download
memory/1616-18-0x0000000005A20000-0x0000000005A42000-memory.dmp

Filesize
136KB

Download
memory/1616-30-0x0000000006330000-0x0000000006684000-memory.dmp

Filesize
3.3MB

Download
memory/1616-31-0x0000000006900000-0x000000000691E000-memory.dmp

Filesize
120KB

Download
memory/1616-32-0x0000000006930000-0x000000000697C000-memory.dmp

Filesize
304KB

Download
memory/1616-33-0x0000000075070000-0x0000000075820000-memory.dmp

Filesize
7.7MB

Download
memory/1616-34-0x0000000006EB0000-0x0000000006EE2000-memory.dmp

Filesize
200KB

Download
memory/1616-35-0x0000000070E10000-0x0000000070E5C000-memory.dmp

Filesize
304KB

Download
memory/1616-45-0x00000000078B0000-0x00000000078CE000-memory.dmp

Filesize
120KB

Download
memory/1616-46-0x0000000007AE0000-0x0000000007B83000-memory.dmp

Filesize
652KB

Download
memory/1616-47-0x0000000075070000-0x0000000075820000-memory.dmp

Filesize
7.7MB

Download
memory/1616-48-0x0000000075070000-0x0000000075820000-memory.dmp

Filesize
7.7MB

Download
memory/1616-17-0x0000000075070000-0x0000000075820000-memory.dmp

Filesize
7.7MB

Download
memory/1616-50-0x0000000007C10000-0x0000000007C2A000-memory.dmp

Filesize
104KB

Download
memory/1616-51-0x0000000007C80000-0x0000000007C8A000-memory.dmp

Filesize
40KB

Download
memory/1616-13-0x000000007507E000-0x000000007507F000-memory.dmp

Filesize
4KB

Download
memory/1616-53-0x0000000007EA0000-0x0000000007F36000-memory.dmp

Filesize
600KB

Download
memory/1616-54-0x0000000007E10000-0x0000000007E21000-memory.dmp

Filesize
68KB

Download
memory/1616-55-0x0000000007E50000-0x0000000007E5E000-memory.dmp

Filesize
56KB

Download
memory/1616-56-0x0000000007E60000-0x0000000007E74000-memory.dmp

Filesize
80KB

Download
memory/1616-57-0x0000000007F40000-0x0000000007F5A000-memory.dmp

Filesize
104KB

Download
memory/1616-58-0x0000000007E90000-0x0000000007E98000-memory.dmp

Filesize
32KB

Download
memory/1616-14-0x0000000003330000-0x0000000003366000-memory.dmp

Filesize
216KB

Download
memory/1616-19-0x0000000006250000-0x00000000062B6000-memory.dmp

Filesize
408KB

Download
memory/1616-16-0x0000000005B20000-0x0000000006148000-memory.dmp

Filesize
6.2MB

Download
memory/1616-15-0x0000000075070000-0x0000000075820000-memory.dmp

Filesize
7.7MB

Download
memory/2780-75-0x000001A9F78A0000-0x000001A9F7ABC000-memory.dmp

Filesize
2.1MB

Download
memory/2780-64-0x000001A9DF2A0000-0x000001A9DF2C2000-memory.dmp

Filesize
136KB

Download
memory/3316-111-0x0000018CF8F40000-0x0000018CF915C000-memory.dmp

Filesize
2.1MB

Download
memory/4588-52-0x000000001B400000-0x000000001B410000-memory.dmp

Filesize
64KB

Download
memory/4588-12-0x00000000006D0000-0x00000000006E8000-memory.dmp

Filesize
96KB

Download
memory/4588-116-0x000000001B400000-0x000000001B410000-memory.dmp

Filesize
64KB

Download
memory/4588-11-0x00007FFB93F43000-0x00007FFB93F45000-memory.dmp

Filesize
8KB

Download
memory/4748-99-0x000001B8AD910000-0x000001B8ADB2C000-memory.dmp

Filesize
2.1MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads