xworm | b7df6d57fa0d03e8b88e410b7e3f9e9b2a3f1ea1ed7da20772b5ac891901b973

General

Target

b7df6d57fa0d03e8b88e410b7e3f9e9b2a3f1ea1ed7da20772b5ac891901b973.exe
Size

948KB
MD5

f42ead56b96d1ba327e85589ef129525
SHA1

57a14d971e918a2f0cdf9c7de2d58f7f0735fa27
SHA256

b7df6d57fa0d03e8b88e410b7e3f9e9b2a3f1ea1ed7da20772b5ac891901b973
SHA512

d3f39ac55320356472ea2f9c94633463c48da6f7691d6362eb35501ef9a6e764ad0e67c7177383e074750e4af426d2b20d8e3f751e6369984bf33ea6872af0f0
SSDEEP

12288:H76xn0ce0nsDy0Q00QEA86GiuzOg7IPD6TbsdWcS/0w1ey2EcP1E4gLO:b6xnLnBmn86uzOg7IrYbyWRjeZxgL

Score

10^/10

Malware Config

Signatures

Detect Xworm Payload 5 IoCs

resource	yara_rule
behavioral1/memory/760-23-0x0000000000400000-0x000000000040E000-memory.dmp	family_xworm
behavioral1/memory/760-28-0x0000000000400000-0x000000000040E000-memory.dmp	family_xworm
behavioral1/memory/760-31-0x0000000000400000-0x000000000040E000-memory.dmp	family_xworm
behavioral1/memory/760-29-0x0000000000400000-0x000000000040E000-memory.dmp	family_xworm
behavioral1/memory/760-25-0x0000000000400000-0x000000000040E000-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 2 IoCs

Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

execution

PowerShell

T1059.001

pid	Process
2876	powershell.exe
1656	powershell.exe

Drops startup file 2 IoCs

description	ioc	Process
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\XClient.lnk	b7df6d57fa0d03e8b88e410b7e3f9e9b2a3f1ea1ed7da20772b5ac891901b973.exe
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\XClient.lnk	b7df6d57fa0d03e8b88e410b7e3f9e9b2a3f1ea1ed7da20772b5ac891901b973.exe

Loads dropped DLL 1 IoCs

pid	Process
760	b7df6d57fa0d03e8b88e410b7e3f9e9b2a3f1ea1ed7da20772b5ac891901b973.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1700 set thread context of 760	1700	b7df6d57fa0d03e8b88e410b7e3f9e9b2a3f1ea1ed7da20772b5ac891901b973.exe	37

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 5 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	b7df6d57fa0d03e8b88e410b7e3f9e9b2a3f1ea1ed7da20772b5ac891901b973.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	powershell.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	powershell.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	b7df6d57fa0d03e8b88e410b7e3f9e9b2a3f1ea1ed7da20772b5ac891901b973.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
2868	schtasks.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2876	powershell.exe
1656	powershell.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	760	b7df6d57fa0d03e8b88e410b7e3f9e9b2a3f1ea1ed7da20772b5ac891901b973.exe
Token: SeDebugPrivilege	2876	powershell.exe
Token: SeDebugPrivilege	1656	powershell.exe

Suspicious use of WriteProcessMemory 21 IoCs

description	pid	Process	procid_target
PID 1700 wrote to memory of 1656	1700	b7df6d57fa0d03e8b88e410b7e3f9e9b2a3f1ea1ed7da20772b5ac891901b973.exe	31
PID 1700 wrote to memory of 1656	1700	b7df6d57fa0d03e8b88e410b7e3f9e9b2a3f1ea1ed7da20772b5ac891901b973.exe	31
PID 1700 wrote to memory of 1656	1700	b7df6d57fa0d03e8b88e410b7e3f9e9b2a3f1ea1ed7da20772b5ac891901b973.exe	31
PID 1700 wrote to memory of 1656	1700	b7df6d57fa0d03e8b88e410b7e3f9e9b2a3f1ea1ed7da20772b5ac891901b973.exe	31
PID 1700 wrote to memory of 2876	1700	b7df6d57fa0d03e8b88e410b7e3f9e9b2a3f1ea1ed7da20772b5ac891901b973.exe	33
PID 1700 wrote to memory of 2876	1700	b7df6d57fa0d03e8b88e410b7e3f9e9b2a3f1ea1ed7da20772b5ac891901b973.exe	33
PID 1700 wrote to memory of 2876	1700	b7df6d57fa0d03e8b88e410b7e3f9e9b2a3f1ea1ed7da20772b5ac891901b973.exe	33
PID 1700 wrote to memory of 2876	1700	b7df6d57fa0d03e8b88e410b7e3f9e9b2a3f1ea1ed7da20772b5ac891901b973.exe	33
PID 1700 wrote to memory of 2868	1700	b7df6d57fa0d03e8b88e410b7e3f9e9b2a3f1ea1ed7da20772b5ac891901b973.exe	35
PID 1700 wrote to memory of 2868	1700	b7df6d57fa0d03e8b88e410b7e3f9e9b2a3f1ea1ed7da20772b5ac891901b973.exe	35
PID 1700 wrote to memory of 2868	1700	b7df6d57fa0d03e8b88e410b7e3f9e9b2a3f1ea1ed7da20772b5ac891901b973.exe	35
PID 1700 wrote to memory of 2868	1700	b7df6d57fa0d03e8b88e410b7e3f9e9b2a3f1ea1ed7da20772b5ac891901b973.exe	35
PID 1700 wrote to memory of 760	1700	b7df6d57fa0d03e8b88e410b7e3f9e9b2a3f1ea1ed7da20772b5ac891901b973.exe	37
PID 1700 wrote to memory of 760	1700	b7df6d57fa0d03e8b88e410b7e3f9e9b2a3f1ea1ed7da20772b5ac891901b973.exe	37
PID 1700 wrote to memory of 760	1700	b7df6d57fa0d03e8b88e410b7e3f9e9b2a3f1ea1ed7da20772b5ac891901b973.exe	37
PID 1700 wrote to memory of 760	1700	b7df6d57fa0d03e8b88e410b7e3f9e9b2a3f1ea1ed7da20772b5ac891901b973.exe	37
PID 1700 wrote to memory of 760	1700	b7df6d57fa0d03e8b88e410b7e3f9e9b2a3f1ea1ed7da20772b5ac891901b973.exe	37
PID 1700 wrote to memory of 760	1700	b7df6d57fa0d03e8b88e410b7e3f9e9b2a3f1ea1ed7da20772b5ac891901b973.exe	37
PID 1700 wrote to memory of 760	1700	b7df6d57fa0d03e8b88e410b7e3f9e9b2a3f1ea1ed7da20772b5ac891901b973.exe	37
PID 1700 wrote to memory of 760	1700	b7df6d57fa0d03e8b88e410b7e3f9e9b2a3f1ea1ed7da20772b5ac891901b973.exe	37
PID 1700 wrote to memory of 760	1700	b7df6d57fa0d03e8b88e410b7e3f9e9b2a3f1ea1ed7da20772b5ac891901b973.exe	37

C:\Users\Admin\AppData\Local\Temp\b7df6d57fa0d03e8b88e410b7e3f9e9b2a3f1ea1ed7da20772b5ac891901b973.exe
"C:\Users\Admin\AppData\Local\Temp\b7df6d57fa0d03e8b88e410b7e3f9e9b2a3f1ea1ed7da20772b5ac891901b973.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1700
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Local\Temp\b7df6d57fa0d03e8b88e410b7e3f9e9b2a3f1ea1ed7da20772b5ac891901b973.exe"
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1656
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\VVfccOQ.exe"
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2876
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\VVfccOQ" /XML "C:\Users\Admin\AppData\Local\Temp\tmpDB80.tmp"
  2⤵
  - System Location Discovery: System Language Discovery
  - Scheduled Task/Job: Scheduled Task
  PID:2868
- C:\Users\Admin\AppData\Local\Temp\b7df6d57fa0d03e8b88e410b7e3f9e9b2a3f1ea1ed7da20772b5ac891901b973.exe
  "C:\Users\Admin\AppData\Local\Temp\b7df6d57fa0d03e8b88e410b7e3f9e9b2a3f1ea1ed7da20772b5ac891901b973.exe"
  2⤵
  - Drops startup file
  - Loads dropped DLL
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  PID:760

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

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Privilege Escalation

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

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

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmpDB80.tmp

Filesize
1KB

MD5
65fad0277b7978d586934afeb415acdf

SHA1
92545d83ab232432d7952986d178d0a8da33abaf

SHA256
0190d7ad6aee5734f8b76a9a35d00f6e11200a1b4c23e772c83fab49504d9176

SHA512
79f6719b62ec0c473bbe82b165f461d1e34ab29f4f710b5ce9582139fd3be03b09f0b2467c3158fb31d3deadb1d26906aa4045914eb46c102213a7d235d327a9

Download Submit
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\6JIOHMJI4IJYRIORIG2X.temp

Filesize
7KB

MD5
30126961e2333abae44d8f351205187e

SHA1
09862c177b3a2485d00ddc7155b84e0a31075ac9

SHA256
3a519f47195631a7448befd8ac416c74d2f840bde8384fd8ccb391763f7bdbec

SHA512
c000a68279aa25c9e1e86a3f5486d9f35ef6331f72521c15034532cbf8ea395244f163bb5de9414be44342a77d97a05421bdcc2dc9f9855431f0c465e439b8a0

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

Filesize
948KB

MD5
f42ead56b96d1ba327e85589ef129525

SHA1
57a14d971e918a2f0cdf9c7de2d58f7f0735fa27

SHA256
b7df6d57fa0d03e8b88e410b7e3f9e9b2a3f1ea1ed7da20772b5ac891901b973

SHA512
d3f39ac55320356472ea2f9c94633463c48da6f7691d6362eb35501ef9a6e764ad0e67c7177383e074750e4af426d2b20d8e3f751e6369984bf33ea6872af0f0

Download Submit
memory/760-31-0x0000000000400000-0x000000000040E000-memory.dmp

Filesize
56KB

Download
memory/760-29-0x0000000000400000-0x000000000040E000-memory.dmp

Filesize
56KB

Download
memory/760-19-0x0000000000400000-0x000000000040E000-memory.dmp

Filesize
56KB

Download
memory/760-21-0x0000000000400000-0x000000000040E000-memory.dmp

Filesize
56KB

Download
memory/760-25-0x0000000000400000-0x000000000040E000-memory.dmp

Filesize
56KB

Download
memory/760-27-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/760-23-0x0000000000400000-0x000000000040E000-memory.dmp

Filesize
56KB

Download
memory/760-28-0x0000000000400000-0x000000000040E000-memory.dmp

Filesize
56KB

Download
memory/1700-2-0x00000000748A0000-0x0000000074F8E000-memory.dmp

Filesize
6.9MB

Download
memory/1700-0-0x00000000748AE000-0x00000000748AF000-memory.dmp

Filesize
4KB

Download
memory/1700-4-0x00000000748AE000-0x00000000748AF000-memory.dmp

Filesize
4KB

Download
memory/1700-3-0x00000000003A0000-0x00000000003B2000-memory.dmp

Filesize
72KB

Download
memory/1700-6-0x0000000004F30000-0x0000000004F84000-memory.dmp

Filesize
336KB

Download
memory/1700-5-0x00000000748A0000-0x0000000074F8E000-memory.dmp

Filesize
6.9MB

Download
memory/1700-32-0x00000000748A0000-0x0000000074F8E000-memory.dmp

Filesize
6.9MB

Download
memory/1700-1-0x0000000001310000-0x0000000001402000-memory.dmp

Filesize
968KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads