xworm | 3a5134cc11c7c47b7268e7bf6bf1556c5ff5044af54b7931cae652bfd8d83717

Analysis

max time kernel
120s
max time network
148s
platform
windows7_x64
resource
win7-20240729-en
resource tags

arch:x64arch:x86image:win7-20240729-enlocale:en-usos:windows7-x64system
submitted
31-08-2024 07:51

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General

Target

new policy.scr.exe
Size

2.3MB
MD5

01e7e40055d24780359493decf90ac21
SHA1

b59b66a3af3a9920b7de22975997a1ec1e4d5528
SHA256

3a5134cc11c7c47b7268e7bf6bf1556c5ff5044af54b7931cae652bfd8d83717
SHA512

d6069f19cb7acafe771abd095ac9de17767f31dad21951488dd91b56eec65674033e7aad25d038a4f1cd067e1e7fe91f1e8d9bfcf75c593209befe876ac9ffc1
SSDEEP

24576:RGvPRpFuolzFPJ+l3Drhea534ESvFpLa35sfp+ee:

Score

10^/10

xworm discovery persistence rat trojan

Malware Config

Extracted

Family

xworm

Version

5.0

airlineagancy.casacam.net:7076

Mutex

BGCigTdLypaes6Nr

Attributes

install_file
USB.exe

aes.plain

Signatures

Detect Xworm Payload 2 IoCs

resource	yara_rule
behavioral1/files/0x00070000000120fe-1085.dat	family_xworm
behavioral1/memory/4948-1092-0x0000000000D70000-0x0000000000D7E000-memory.dmp	family_xworm

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

Executes dropped EXE 1 IoCs

pid	Process
4948	airlineagancy.casacam.net 7076.exe

Loads dropped DLL 1 IoCs

pid	Process
2400	new policy.scr.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-1-5-21-2257386474-3982792636-3902186748-1000\Software\Microsoft\Windows\CurrentVersion\Run\Networks! = "C:\\Users\\Admin\\AppData\\Roaming\\Networks!.exe"	new policy.scr.exe

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

System Information Discovery
T1082

Program crash 1 IoCs

pid	pid_target	Process	procid_target
4996	2400	WerFault.exe	29

System Location Discovery: System Language Discovery 1 TTPs 1 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	new policy.scr.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
2400	new policy.scr.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	2400	new policy.scr.exe
Token: SeDebugPrivilege	2400	new policy.scr.exe
Token: SeDebugPrivilege	4948	airlineagancy.casacam.net 7076.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 2400 wrote to memory of 4948	2400	new policy.scr.exe	30
PID 2400 wrote to memory of 4948	2400	new policy.scr.exe	30
PID 2400 wrote to memory of 4948	2400	new policy.scr.exe	30
PID 2400 wrote to memory of 4948	2400	new policy.scr.exe	30
PID 2400 wrote to memory of 4996	2400	new policy.scr.exe	31
PID 2400 wrote to memory of 4996	2400	new policy.scr.exe	31
PID 2400 wrote to memory of 4996	2400	new policy.scr.exe	31
PID 2400 wrote to memory of 4996	2400	new policy.scr.exe	31

C:\Users\Admin\AppData\Local\Temp\new policy.scr.exe
"C:\Users\Admin\AppData\Local\Temp\new policy.scr.exe"
1⤵
- Loads dropped DLL
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2400
- C:\Users\Admin\AppData\Local\Temp\airlineagancy.casacam.net 7076.exe
  "C:\Users\Admin\AppData\Local\Temp\airlineagancy.casacam.net 7076.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:4948
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2400 -s 952
  2⤵
  - Program crash
  PID:4996

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

\Users\Admin\AppData\Local\Temp\airlineagancy.casacam.net 7076.exe

Filesize
32KB

MD5
85992141e0054144793b0767444aa3e0

SHA1
8db16cf0596aa7b0794bf38397e8876f9cd7ac4d

SHA256
62138a28be6583227c33e709d31064416b7009a8a66830229aa509832706fe42

SHA512
f0bf5714197b30dbd03c385b4e560695d5ea9fc18c268354c077f846701106e8d530a65c1a89b1096aa7f45232ac771603c58077bd2b603fb637f357bedb4c6e

Download Submit
memory/2400-52-0x0000000004A70000-0x0000000004B85000-memory.dmp

Filesize
1.1MB

Download
memory/2400-1089-0x0000000004930000-0x0000000004984000-memory.dmp

Filesize
336KB

Download
memory/2400-3-0x0000000004A70000-0x0000000004B85000-memory.dmp

Filesize
1.1MB

Download
memory/2400-4-0x0000000004A70000-0x0000000004B85000-memory.dmp

Filesize
1.1MB

Download
memory/2400-14-0x0000000004A70000-0x0000000004B85000-memory.dmp

Filesize
1.1MB

Download
memory/2400-24-0x0000000004A70000-0x0000000004B85000-memory.dmp

Filesize
1.1MB

Download
memory/2400-6-0x0000000004A70000-0x0000000004B85000-memory.dmp

Filesize
1.1MB

Download
memory/2400-8-0x0000000004A70000-0x0000000004B85000-memory.dmp

Filesize
1.1MB

Download
memory/2400-10-0x0000000004A70000-0x0000000004B85000-memory.dmp

Filesize
1.1MB

Download
memory/2400-12-0x0000000004A70000-0x0000000004B85000-memory.dmp

Filesize
1.1MB

Download
memory/2400-16-0x0000000004A70000-0x0000000004B85000-memory.dmp

Filesize
1.1MB

Download
memory/2400-18-0x0000000004A70000-0x0000000004B85000-memory.dmp

Filesize
1.1MB

Download
memory/2400-20-0x0000000004A70000-0x0000000004B85000-memory.dmp

Filesize
1.1MB

Download
memory/2400-22-0x0000000004A70000-0x0000000004B85000-memory.dmp

Filesize
1.1MB

Download
memory/2400-54-0x0000000004A70000-0x0000000004B85000-memory.dmp

Filesize
1.1MB

Download
memory/2400-42-0x0000000004A70000-0x0000000004B85000-memory.dmp

Filesize
1.1MB

Download
memory/2400-56-0x0000000004A70000-0x0000000004B85000-memory.dmp

Filesize
1.1MB

Download
memory/2400-66-0x0000000004A70000-0x0000000004B85000-memory.dmp

Filesize
1.1MB

Download
memory/2400-64-0x0000000004A70000-0x0000000004B85000-memory.dmp

Filesize
1.1MB

Download
memory/2400-62-0x0000000004A70000-0x0000000004B85000-memory.dmp

Filesize
1.1MB

Download
memory/2400-60-0x0000000004A70000-0x0000000004B85000-memory.dmp

Filesize
1.1MB

Download
memory/2400-58-0x0000000004A70000-0x0000000004B85000-memory.dmp

Filesize
1.1MB

Download
memory/2400-26-0x0000000004A70000-0x0000000004B85000-memory.dmp

Filesize
1.1MB

Download
memory/2400-2-0x0000000004A70000-0x0000000004B8A000-memory.dmp

Filesize
1.1MB

Download
memory/2400-32-0x0000000004A70000-0x0000000004B85000-memory.dmp

Filesize
1.1MB

Download
memory/2400-48-0x0000000004A70000-0x0000000004B85000-memory.dmp

Filesize
1.1MB

Download
memory/2400-46-0x0000000004A70000-0x0000000004B85000-memory.dmp

Filesize
1.1MB

Download
memory/2400-44-0x0000000004A70000-0x0000000004B85000-memory.dmp

Filesize
1.1MB

Download
memory/2400-40-0x0000000004A70000-0x0000000004B85000-memory.dmp

Filesize
1.1MB

Download
memory/2400-38-0x0000000004A70000-0x0000000004B85000-memory.dmp

Filesize
1.1MB

Download
memory/2400-36-0x0000000004A70000-0x0000000004B85000-memory.dmp

Filesize
1.1MB

Download
memory/2400-34-0x0000000004A70000-0x0000000004B85000-memory.dmp

Filesize
1.1MB

Download
memory/2400-50-0x0000000004A70000-0x0000000004B85000-memory.dmp

Filesize
1.1MB

Download
memory/2400-30-0x0000000004A70000-0x0000000004B85000-memory.dmp

Filesize
1.1MB

Download
memory/2400-28-0x0000000004A70000-0x0000000004B85000-memory.dmp

Filesize
1.1MB

Download
memory/2400-1077-0x0000000073E60000-0x000000007454E000-memory.dmp

Filesize
6.9MB

Download
memory/2400-1078-0x0000000073E60000-0x000000007454E000-memory.dmp

Filesize
6.9MB

Download
memory/2400-1079-0x0000000000F00000-0x0000000000F94000-memory.dmp

Filesize
592KB

Download
memory/2400-1080-0x0000000000C50000-0x0000000000C9C000-memory.dmp

Filesize
304KB

Download
memory/2400-1081-0x0000000073E6E000-0x0000000073E6F000-memory.dmp

Filesize
4KB

Download
memory/2400-1082-0x0000000073E60000-0x000000007454E000-memory.dmp

Filesize
6.9MB

Download
memory/2400-1-0x0000000000FD0000-0x0000000001216000-memory.dmp

Filesize
2.3MB

Download
memory/2400-0-0x0000000073E6E000-0x0000000073E6F000-memory.dmp

Filesize
4KB

Download
memory/4948-1090-0x000007FEF57D3000-0x000007FEF57D4000-memory.dmp

Filesize
4KB

Download
memory/4948-1092-0x0000000000D70000-0x0000000000D7E000-memory.dmp

Filesize
56KB

Download
memory/4948-1093-0x000007FEF57D0000-0x000007FEF61BC000-memory.dmp

Filesize
9.9MB

Download
memory/4948-1094-0x000007FEF57D3000-0x000007FEF57D4000-memory.dmp

Filesize
4KB

Download
memory/4948-1095-0x000007FEF57D0000-0x000007FEF61BC000-memory.dmp

Filesize
9.9MB

Download