xworm | 21b3ce427475b47076786585d7041284d6904b77cc3fe4ed9bb0c58f2b98f326

General

Target

21b3ce427475b47076786585d7041284d6904b77cc3fe4ed9bb0c58f2b98f326.exe
Size

636KB
MD5

37ef4f24015c203f1f703e634ab7abe3
SHA1

bf007a685cdc77adcec7e214659934b8b7264f25
SHA256

21b3ce427475b47076786585d7041284d6904b77cc3fe4ed9bb0c58f2b98f326
SHA512

9ff7deb7b9ad9c994a5c0243a1339b558e065b4fce83882ec02932b6e734e7b49d4541215d7dcf40558fd25486ededeaa78a945c335de0e3af95c146506e14e9
SSDEEP

12288:5fcXgNO7W7X28o3knVj0pZnON0zFbfvDm/RAGCP0I+m4SW:ZSWOS6z+Iyqzm/SHP0I+m4n

Score

10^/10

xworm discovery rat trojan

Malware Config

Extracted

Family

xworm

C2

doe.ydns.eu:5901

wqo9.firewall-gateway.de:5901

Attributes

Install_directory
%AppData%
install_file
MicroSoftEdge.exe

Signatures

Detect Xworm Payload 5 IoCs

resource	yara_rule
behavioral1/memory/2664-17-0x0000000000400000-0x0000000000416000-memory.dmp	family_xworm
behavioral1/memory/2664-13-0x0000000000400000-0x0000000000416000-memory.dmp	family_xworm
behavioral1/memory/2664-11-0x0000000000400000-0x0000000000416000-memory.dmp	family_xworm
behavioral1/memory/2664-19-0x0000000000400000-0x0000000000416000-memory.dmp	family_xworm
behavioral1/memory/2664-21-0x0000000000400000-0x0000000000416000-memory.dmp	family_xworm

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

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\MicroSoftEdge.lnk	21b3ce427475b47076786585d7041284d6904b77cc3fe4ed9bb0c58f2b98f326.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\MicroSoftEdge.lnk	21b3ce427475b47076786585d7041284d6904b77cc3fe4ed9bb0c58f2b98f326.exe

Loads dropped DLL 1 IoCs

pid	Process
2664	21b3ce427475b47076786585d7041284d6904b77cc3fe4ed9bb0c58f2b98f326.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1696 set thread context of 2664	1696	21b3ce427475b47076786585d7041284d6904b77cc3fe4ed9bb0c58f2b98f326.exe	33

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	21b3ce427475b47076786585d7041284d6904b77cc3fe4ed9bb0c58f2b98f326.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	21b3ce427475b47076786585d7041284d6904b77cc3fe4ed9bb0c58f2b98f326.exe

Suspicious behavior: EnumeratesProcesses 10 IoCs

pid	Process
1696	21b3ce427475b47076786585d7041284d6904b77cc3fe4ed9bb0c58f2b98f326.exe
1696	21b3ce427475b47076786585d7041284d6904b77cc3fe4ed9bb0c58f2b98f326.exe
1696	21b3ce427475b47076786585d7041284d6904b77cc3fe4ed9bb0c58f2b98f326.exe
1696	21b3ce427475b47076786585d7041284d6904b77cc3fe4ed9bb0c58f2b98f326.exe
1696	21b3ce427475b47076786585d7041284d6904b77cc3fe4ed9bb0c58f2b98f326.exe
1696	21b3ce427475b47076786585d7041284d6904b77cc3fe4ed9bb0c58f2b98f326.exe
1696	21b3ce427475b47076786585d7041284d6904b77cc3fe4ed9bb0c58f2b98f326.exe
1696	21b3ce427475b47076786585d7041284d6904b77cc3fe4ed9bb0c58f2b98f326.exe
1696	21b3ce427475b47076786585d7041284d6904b77cc3fe4ed9bb0c58f2b98f326.exe
1696	21b3ce427475b47076786585d7041284d6904b77cc3fe4ed9bb0c58f2b98f326.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2664	21b3ce427475b47076786585d7041284d6904b77cc3fe4ed9bb0c58f2b98f326.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 1696 wrote to memory of 2664	1696	21b3ce427475b47076786585d7041284d6904b77cc3fe4ed9bb0c58f2b98f326.exe	33
PID 1696 wrote to memory of 2664	1696	21b3ce427475b47076786585d7041284d6904b77cc3fe4ed9bb0c58f2b98f326.exe	33
PID 1696 wrote to memory of 2664	1696	21b3ce427475b47076786585d7041284d6904b77cc3fe4ed9bb0c58f2b98f326.exe	33
PID 1696 wrote to memory of 2664	1696	21b3ce427475b47076786585d7041284d6904b77cc3fe4ed9bb0c58f2b98f326.exe	33
PID 1696 wrote to memory of 2664	1696	21b3ce427475b47076786585d7041284d6904b77cc3fe4ed9bb0c58f2b98f326.exe	33
PID 1696 wrote to memory of 2664	1696	21b3ce427475b47076786585d7041284d6904b77cc3fe4ed9bb0c58f2b98f326.exe	33
PID 1696 wrote to memory of 2664	1696	21b3ce427475b47076786585d7041284d6904b77cc3fe4ed9bb0c58f2b98f326.exe	33
PID 1696 wrote to memory of 2664	1696	21b3ce427475b47076786585d7041284d6904b77cc3fe4ed9bb0c58f2b98f326.exe	33
PID 1696 wrote to memory of 2664	1696	21b3ce427475b47076786585d7041284d6904b77cc3fe4ed9bb0c58f2b98f326.exe	33

C:\Users\Admin\AppData\Local\Temp\21b3ce427475b47076786585d7041284d6904b77cc3fe4ed9bb0c58f2b98f326.exe
"C:\Users\Admin\AppData\Local\Temp\21b3ce427475b47076786585d7041284d6904b77cc3fe4ed9bb0c58f2b98f326.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:1696
- C:\Users\Admin\AppData\Local\Temp\21b3ce427475b47076786585d7041284d6904b77cc3fe4ed9bb0c58f2b98f326.exe
  "C:\Users\Admin\AppData\Local\Temp\21b3ce427475b47076786585d7041284d6904b77cc3fe4ed9bb0c58f2b98f326.exe"
  2⤵
  - Drops startup file
  - Loads dropped DLL
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  PID:2664

C:\Windows\system32\wbem\WmiApSrv.exe
C:\Windows\system32\wbem\WmiApSrv.exe
1⤵
PID:2440

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

1

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

\Users\Admin\AppData\Roaming\MicroSoftEdge.exe

Filesize
636KB

MD5
37ef4f24015c203f1f703e634ab7abe3

SHA1
bf007a685cdc77adcec7e214659934b8b7264f25

SHA256
21b3ce427475b47076786585d7041284d6904b77cc3fe4ed9bb0c58f2b98f326

SHA512
9ff7deb7b9ad9c994a5c0243a1339b558e065b4fce83882ec02932b6e734e7b49d4541215d7dcf40558fd25486ededeaa78a945c335de0e3af95c146506e14e9

Download Submit
memory/1696-22-0x00000000745A0000-0x0000000074C8E000-memory.dmp

Filesize
6.9MB

Download
memory/1696-2-0x00000000745A0000-0x0000000074C8E000-memory.dmp

Filesize
6.9MB

Download
memory/1696-3-0x0000000004060000-0x0000000004078000-memory.dmp

Filesize
96KB

Download
memory/1696-4-0x00000000745AE000-0x00000000745AF000-memory.dmp

Filesize
4KB

Download
memory/1696-5-0x00000000745A0000-0x0000000074C8E000-memory.dmp

Filesize
6.9MB

Download
memory/1696-6-0x0000000004F60000-0x0000000004FBA000-memory.dmp

Filesize
360KB

Download
memory/1696-1-0x0000000000BB0000-0x0000000000C54000-memory.dmp

Filesize
656KB

Download
memory/1696-0-0x00000000745AE000-0x00000000745AF000-memory.dmp

Filesize
4KB

Download
memory/2664-13-0x0000000000400000-0x0000000000416000-memory.dmp

Filesize
88KB

Download
memory/2664-15-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2664-19-0x0000000000400000-0x0000000000416000-memory.dmp

Filesize
88KB

Download
memory/2664-9-0x0000000000400000-0x0000000000416000-memory.dmp

Filesize
88KB

Download
memory/2664-11-0x0000000000400000-0x0000000000416000-memory.dmp

Filesize
88KB

Download
memory/2664-21-0x0000000000400000-0x0000000000416000-memory.dmp

Filesize
88KB

Download
memory/2664-17-0x0000000000400000-0x0000000000416000-memory.dmp

Filesize
88KB

Download
memory/2664-23-0x00000000745A0000-0x0000000074C8E000-memory.dmp

Filesize
6.9MB

Download
memory/2664-7-0x0000000000400000-0x0000000000416000-memory.dmp

Filesize
88KB

Download
memory/2664-29-0x00000000745A0000-0x0000000074C8E000-memory.dmp

Filesize
6.9MB

Download
memory/2664-30-0x00000000745A0000-0x0000000074C8E000-memory.dmp

Filesize
6.9MB

Download
memory/2664-31-0x00000000745A0000-0x0000000074C8E000-memory.dmp

Filesize
6.9MB

Download

Analysis

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