xworm | 389bcd4e3c1447f8e0704c0bd0590ca7d38a00a7cb8088e4cb0f43dc86da4233

General

Target

GRU-6LDC.exe
Size

315KB
MD5

754a0ca3356a8f76909cd9c5c41234d5
SHA1

c3d9d52316b071f0db5ca9cd6999bfc06141795b
SHA256

740253f7075ea5e09021a78ff868d9c90931210aa12e2da91b60f1ea7380f759
SHA512

d1fdc37b367dd2dba4cb75021299c12c22064b40d48ba6250568727b565e73c7bbe03691bb0b288dc0b588679d6d9408bf7ff7bb60a69b26e41cf69c4c78fbe5
SSDEEP

6144:K3B4ZXBhCirEL5BH46Zk16P9R8G1jqJ6TVKSK:K3BghvrELPH46ZAKjoQES

Score

10^/10

xworm persistence rat trojan

Malware Config

Extracted

Family

xworm

Version

5.0

C2

brightle.ddns.net:7000

Mutex

jaSa0S2QQOuGarf8

Attributes

install_file
USB.exe

aes.plain

Signatures

Detect Xworm Payload 1 IoCs

resource	yara_rule
behavioral2/memory/964-9-0x0000000000400000-0x000000000040E000-memory.dmp	family_xworm

Xworm
Xworm is a remote access trojan written in C#.
trojan rat 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-1-5-21-1926387074-3400613176-3566796709-1000\Control Panel\International\Geo\Nation	GRU-6LDC.exe

Executes dropped EXE 4 IoCs

pid	Process
392	XClient.exe
4808	XClient.exe
3008	XClient.exe
4268	XClient.exe

Adds Run key to start application 2 TTPs 3 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-1926387074-3400613176-3566796709-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Vbgxbqr = "C:\\Users\\Admin\\AppData\\Roaming\\Vbgxbqr.exe"	XClient.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1926387074-3400613176-3566796709-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Vbgxbqr = "C:\\Users\\Admin\\AppData\\Roaming\\Vbgxbqr.exe"	GRU-6LDC.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1926387074-3400613176-3566796709-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\XClient = "C:\\Users\\Admin\\AppData\\Roaming\\XClient.exe"	GRU-6LDC.exe

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 2344 set thread context of 964	2344	GRU-6LDC.exe	92
PID 392 set thread context of 3008	392	XClient.exe	102

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

System Information Discovery
T1082

Creates scheduled task(s) 1 TTPs 1 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence

Scheduled Task/Job

T1053

pid	Process
4872	schtasks.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
392	XClient.exe
392	XClient.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

description	pid	Process
Token: SeDebugPrivilege	2344	GRU-6LDC.exe
Token: SeDebugPrivilege	964	GRU-6LDC.exe
Token: SeDebugPrivilege	392	XClient.exe
Token: SeDebugPrivilege	3008	XClient.exe

Suspicious use of WriteProcessMemory 22 IoCs

description	pid	Process	procid_target
PID 2344 wrote to memory of 964	2344	GRU-6LDC.exe	92
PID 2344 wrote to memory of 964	2344	GRU-6LDC.exe	92
PID 2344 wrote to memory of 964	2344	GRU-6LDC.exe	92
PID 2344 wrote to memory of 964	2344	GRU-6LDC.exe	92
PID 2344 wrote to memory of 964	2344	GRU-6LDC.exe	92
PID 2344 wrote to memory of 964	2344	GRU-6LDC.exe	92
PID 2344 wrote to memory of 964	2344	GRU-6LDC.exe	92
PID 2344 wrote to memory of 964	2344	GRU-6LDC.exe	92
PID 964 wrote to memory of 4872	964	GRU-6LDC.exe	96
PID 964 wrote to memory of 4872	964	GRU-6LDC.exe	96
PID 964 wrote to memory of 4872	964	GRU-6LDC.exe	96
PID 392 wrote to memory of 4808	392	XClient.exe	101
PID 392 wrote to memory of 4808	392	XClient.exe	101
PID 392 wrote to memory of 4808	392	XClient.exe	101
PID 392 wrote to memory of 3008	392	XClient.exe	102
PID 392 wrote to memory of 3008	392	XClient.exe	102
PID 392 wrote to memory of 3008	392	XClient.exe	102
PID 392 wrote to memory of 3008	392	XClient.exe	102
PID 392 wrote to memory of 3008	392	XClient.exe	102
PID 392 wrote to memory of 3008	392	XClient.exe	102
PID 392 wrote to memory of 3008	392	XClient.exe	102
PID 392 wrote to memory of 3008	392	XClient.exe	102

C:\Users\Admin\AppData\Local\Temp\GRU-6LDC.exe
"C:\Users\Admin\AppData\Local\Temp\GRU-6LDC.exe"
1⤵
- Adds Run key to start application
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2344
- C:\Users\Admin\AppData\Local\Temp\GRU-6LDC.exe
  C:\Users\Admin\AppData\Local\Temp\GRU-6LDC.exe
  2⤵
  - Checks computer location settings
  - Adds Run key to start application
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:964
- - C:\Windows\SysWOW64\schtasks.exe
    "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "XClient" /tr "C:\Users\Admin\AppData\Roaming\XClient.exe"
    3⤵
    - Creates scheduled task(s)
    PID:4872

C:\Users\Admin\AppData\Roaming\XClient.exe
C:\Users\Admin\AppData\Roaming\XClient.exe
1⤵
- Executes dropped EXE
- Adds Run key to start application
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:392
- C:\Users\Admin\AppData\Roaming\XClient.exe
  C:\Users\Admin\AppData\Roaming\XClient.exe
  2⤵
  - Executes dropped EXE
  PID:4808
- C:\Users\Admin\AppData\Roaming\XClient.exe
  C:\Users\Admin\AppData\Roaming\XClient.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:3008

C:\Users\Admin\AppData\Roaming\XClient.exe
C:\Users\Admin\AppData\Roaming\XClient.exe
1⤵
- Executes dropped EXE
PID:4268

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

1

T1053

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

Scheduled Task/Job

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

Scheduled Task/Job

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\GRU-6LDC.exe.log

Filesize
1KB

MD5
489c7565f9b029ba9fadff774073cc98

SHA1
56c05089b33ee7e7dfa9e6a2d098164efd8e1150

SHA256
10bf6242da02dad8b2e1208b9dab9a7303cf986320e05e5ef20b99c9b71326d4

SHA512
ddea09c011a8d4f85905842c2f34c98add0110a0b6b3b2709718c3614a2c42dec5f4f5d5b9442cfd3c6c23e9a90c8c0b25c14c3dbd42faea9cc8dd232cace1ac

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\XClient.exe.log

Filesize
1KB

MD5
489c7565f9b029ba9fadff774073cc98

SHA1
56c05089b33ee7e7dfa9e6a2d098164efd8e1150

SHA256
10bf6242da02dad8b2e1208b9dab9a7303cf986320e05e5ef20b99c9b71326d4

SHA512
ddea09c011a8d4f85905842c2f34c98add0110a0b6b3b2709718c3614a2c42dec5f4f5d5b9442cfd3c6c23e9a90c8c0b25c14c3dbd42faea9cc8dd232cace1ac

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

Filesize
315KB

MD5
754a0ca3356a8f76909cd9c5c41234d5

SHA1
c3d9d52316b071f0db5ca9cd6999bfc06141795b

SHA256
740253f7075ea5e09021a78ff868d9c90931210aa12e2da91b60f1ea7380f759

SHA512
d1fdc37b367dd2dba4cb75021299c12c22064b40d48ba6250568727b565e73c7bbe03691bb0b288dc0b588679d6d9408bf7ff7bb60a69b26e41cf69c4c78fbe5

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

Filesize
315KB

MD5
754a0ca3356a8f76909cd9c5c41234d5

SHA1
c3d9d52316b071f0db5ca9cd6999bfc06141795b

SHA256
740253f7075ea5e09021a78ff868d9c90931210aa12e2da91b60f1ea7380f759

SHA512
d1fdc37b367dd2dba4cb75021299c12c22064b40d48ba6250568727b565e73c7bbe03691bb0b288dc0b588679d6d9408bf7ff7bb60a69b26e41cf69c4c78fbe5

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

Filesize
315KB

MD5
754a0ca3356a8f76909cd9c5c41234d5

SHA1
c3d9d52316b071f0db5ca9cd6999bfc06141795b

SHA256
740253f7075ea5e09021a78ff868d9c90931210aa12e2da91b60f1ea7380f759

SHA512
d1fdc37b367dd2dba4cb75021299c12c22064b40d48ba6250568727b565e73c7bbe03691bb0b288dc0b588679d6d9408bf7ff7bb60a69b26e41cf69c4c78fbe5

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

Filesize
315KB

MD5
754a0ca3356a8f76909cd9c5c41234d5

SHA1
c3d9d52316b071f0db5ca9cd6999bfc06141795b

SHA256
740253f7075ea5e09021a78ff868d9c90931210aa12e2da91b60f1ea7380f759

SHA512
d1fdc37b367dd2dba4cb75021299c12c22064b40d48ba6250568727b565e73c7bbe03691bb0b288dc0b588679d6d9408bf7ff7bb60a69b26e41cf69c4c78fbe5

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

Filesize
315KB

MD5
754a0ca3356a8f76909cd9c5c41234d5

SHA1
c3d9d52316b071f0db5ca9cd6999bfc06141795b

SHA256
740253f7075ea5e09021a78ff868d9c90931210aa12e2da91b60f1ea7380f759

SHA512
d1fdc37b367dd2dba4cb75021299c12c22064b40d48ba6250568727b565e73c7bbe03691bb0b288dc0b588679d6d9408bf7ff7bb60a69b26e41cf69c4c78fbe5

Download Submit
memory/392-32-0x0000000074AF0000-0x00000000752A0000-memory.dmp

Filesize
7.7MB

Download
memory/392-25-0x0000000004D80000-0x0000000004D90000-memory.dmp

Filesize
64KB

Download
memory/392-24-0x0000000074AF0000-0x00000000752A0000-memory.dmp

Filesize
7.7MB

Download
memory/392-22-0x0000000074AF0000-0x00000000752A0000-memory.dmp

Filesize
7.7MB

Download
memory/964-17-0x0000000074AF0000-0x00000000752A0000-memory.dmp

Filesize
7.7MB

Download
memory/964-23-0x0000000006630000-0x00000000066C2000-memory.dmp

Filesize
584KB

Download
memory/964-16-0x0000000002810000-0x0000000002820000-memory.dmp

Filesize
64KB

Download
memory/964-14-0x0000000004E70000-0x0000000004F0C000-memory.dmp

Filesize
624KB

Download
memory/964-18-0x0000000005BF0000-0x0000000005C56000-memory.dmp

Filesize
408KB

Download
memory/964-19-0x0000000002810000-0x0000000002820000-memory.dmp

Filesize
64KB

Download
memory/964-13-0x0000000074AF0000-0x00000000752A0000-memory.dmp

Filesize
7.7MB

Download
memory/964-9-0x0000000000400000-0x000000000040E000-memory.dmp

Filesize
56KB

Download
memory/2344-12-0x0000000074AF0000-0x00000000752A0000-memory.dmp

Filesize
7.7MB

Download
memory/2344-0-0x0000000074AF0000-0x00000000752A0000-memory.dmp

Filesize
7.7MB

Download
memory/2344-7-0x0000000007330000-0x00000000078D4000-memory.dmp

Filesize
5.6MB

Download
memory/2344-6-0x0000000006CE0000-0x0000000006D2C000-memory.dmp

Filesize
304KB

Download
memory/2344-5-0x0000000006C40000-0x0000000006C70000-memory.dmp

Filesize
192KB

Download
memory/2344-4-0x0000000006B00000-0x0000000006B40000-memory.dmp

Filesize
256KB

Download
memory/2344-3-0x0000000003270000-0x000000000327A000-memory.dmp

Filesize
40KB

Download
memory/2344-2-0x00000000057C0000-0x00000000057D0000-memory.dmp

Filesize
64KB

Download
memory/2344-1-0x0000000000F40000-0x0000000000F96000-memory.dmp

Filesize
344KB

Download
memory/3008-30-0x0000000074AF0000-0x00000000752A0000-memory.dmp

Filesize
7.7MB

Download
memory/3008-33-0x0000000074AF0000-0x00000000752A0000-memory.dmp

Filesize
7.7MB

Download
memory/4268-35-0x0000000074AF0000-0x00000000752A0000-memory.dmp

Filesize
7.7MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads