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 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/0x000b000000023bb0-4.dat	family_xworm
behavioral2/memory/4636-12-0x0000000000F90000-0x0000000000FA8000-memory.dmp	family_xworm

Xworm
Xworm is a remote access trojan written in C#.
trojan rat xworm
Xworm family
xworm

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-1-5-21-3442511616-637977696-3186306149-1000\Control Panel\International\Geo\Nation	0240fc167d3e9cabeb5a9e707ce52d7842e332e084bef5e22b72fc3ecd3488c0.exe

Executes dropped EXE 1 IoCs

pid	Process
4636	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
14	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

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
4024	powershell.exe
4024	powershell.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	4636	Update.exe
Token: SeDebugPrivilege	4024	powershell.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 3764 wrote to memory of 4024	3764	0240fc167d3e9cabeb5a9e707ce52d7842e332e084bef5e22b72fc3ecd3488c0.exe	84
PID 3764 wrote to memory of 4024	3764	0240fc167d3e9cabeb5a9e707ce52d7842e332e084bef5e22b72fc3ecd3488c0.exe	84
PID 3764 wrote to memory of 4024	3764	0240fc167d3e9cabeb5a9e707ce52d7842e332e084bef5e22b72fc3ecd3488c0.exe	84
PID 3764 wrote to memory of 4636	3764	0240fc167d3e9cabeb5a9e707ce52d7842e332e084bef5e22b72fc3ecd3488c0.exe	86
PID 3764 wrote to memory of 4636	3764	0240fc167d3e9cabeb5a9e707ce52d7842e332e084bef5e22b72fc3ecd3488c0.exe	86

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:3764
- 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:4024
- C:\Users\Admin\AppData\Local\Temp\Update.exe
  "C:\Users\Admin\AppData\Local\Temp\Update.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:4636

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Obfuscated Files or Information

1

T1027

Command Obfuscation

1

T1027.010

Credential Access

Discovery

Query Registry

1

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

Replay Monitor

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Downloads

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_po2qb3pw.baf.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/4024-45-0x0000000006660000-0x000000000667E000-memory.dmp

Filesize
120KB

Download
memory/4024-14-0x0000000002AB0000-0x0000000002AE6000-memory.dmp

Filesize
216KB

Download
memory/4024-44-0x0000000074B90000-0x0000000075340000-memory.dmp

Filesize
7.7MB

Download
memory/4024-15-0x0000000074B90000-0x0000000075340000-memory.dmp

Filesize
7.7MB

Download
memory/4024-16-0x0000000005270000-0x0000000005898000-memory.dmp

Filesize
6.2MB

Download
memory/4024-17-0x0000000074B90000-0x0000000075340000-memory.dmp

Filesize
7.7MB

Download
memory/4024-18-0x00000000051E0000-0x0000000005202000-memory.dmp

Filesize
136KB

Download
memory/4024-19-0x0000000005A10000-0x0000000005A76000-memory.dmp

Filesize
408KB

Download
memory/4024-20-0x0000000005A80000-0x0000000005AE6000-memory.dmp

Filesize
408KB

Download
memory/4024-57-0x0000000007650000-0x0000000007658000-memory.dmp

Filesize
32KB

Download
memory/4024-26-0x0000000005AF0000-0x0000000005E44000-memory.dmp

Filesize
3.3MB

Download
memory/4024-31-0x00000000060B0000-0x00000000060CE000-memory.dmp

Filesize
120KB

Download
memory/4024-32-0x00000000060E0000-0x000000000612C000-memory.dmp

Filesize
304KB

Download
memory/4024-34-0x00000000708A0000-0x00000000708EC000-memory.dmp

Filesize
304KB

Download
memory/4024-60-0x0000000074B90000-0x0000000075340000-memory.dmp

Filesize
7.7MB

Download
memory/4024-13-0x0000000074B9E000-0x0000000074B9F000-memory.dmp

Filesize
4KB

Download
memory/4024-46-0x00000000072B0000-0x0000000007353000-memory.dmp

Filesize
652KB

Download
memory/4024-33-0x0000000007270000-0x00000000072A2000-memory.dmp

Filesize
200KB

Download
memory/4024-47-0x0000000074B90000-0x0000000075340000-memory.dmp

Filesize
7.7MB

Download
memory/4024-48-0x0000000007A20000-0x000000000809A000-memory.dmp

Filesize
6.5MB

Download
memory/4024-49-0x00000000073D0000-0x00000000073EA000-memory.dmp

Filesize
104KB

Download
memory/4024-50-0x0000000007450000-0x000000000745A000-memory.dmp

Filesize
40KB

Download
memory/4024-56-0x0000000007700000-0x000000000771A000-memory.dmp

Filesize
104KB

Download
memory/4024-52-0x0000000007660000-0x00000000076F6000-memory.dmp

Filesize
600KB

Download
memory/4024-53-0x00000000075D0000-0x00000000075E1000-memory.dmp

Filesize
68KB

Download
memory/4024-54-0x0000000007610000-0x000000000761E000-memory.dmp

Filesize
56KB

Download
memory/4024-55-0x0000000007620000-0x0000000007634000-memory.dmp

Filesize
80KB

Download
memory/4636-51-0x000000001BB80000-0x000000001BB90000-memory.dmp

Filesize
64KB

Download
memory/4636-12-0x0000000000F90000-0x0000000000FA8000-memory.dmp

Filesize
96KB

Download
memory/4636-11-0x00007FFEF6893000-0x00007FFEF6895000-memory.dmp

Filesize
8KB

Download

Analysis

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