xworm | 6de45b7c1038dc38aecc42b18cc8ade301a1c756d67caad5fb928e12c631ca7c

General

Target

ff.exe
Size

57KB
MD5

cc210d4f3f1df90c421812660083f6bb
SHA1

f0fcad7c0cbeaf178c9680a5a37fcef2229bdd12
SHA256

6de45b7c1038dc38aecc42b18cc8ade301a1c756d67caad5fb928e12c631ca7c
SHA512

5626183b4743efe77dbddbce49d3f5d55ed7eec83a2e20e711630a85a0b303e8c9fe014fa2e14721a27def010addd8a4c1eb227465cb4ea424ac8320b1adb020
SSDEEP

768:zPPUfdr9ZnnkyuRolFRe+8qGT2dCK6kbwTaBxc3mP6dCH+BiO4hRvjPcHx:z8/JkpGRej2skbwToai6dCecO4/LER

Score

10^/10

xworm rat trojan

Malware Config

Extracted

Family

xworm

C2

127.0.0.1:33725

Attributes

Install_directory
%AppData%
install_file
XClient.exe

Signatures

Detect Xworm Payload 1 IoCs

resource	yara_rule
behavioral1/memory/3188-0-0x0000000000590000-0x00000000005A4000-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\XClient.lnk	ff.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\XClient.lnk	ff.exe

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

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 8 IoCs

pid	Process
4092	powershell.exe
4092	powershell.exe
428	powershell.exe
428	powershell.exe
2468	powershell.exe
2468	powershell.exe
2980	powershell.exe
2980	powershell.exe

Suspicious use of AdjustPrivilegeToken 6 IoCs

description	pid	Process
Token: SeDebugPrivilege	3188	ff.exe
Token: SeDebugPrivilege	4092	powershell.exe
Token: SeDebugPrivilege	428	powershell.exe
Token: SeDebugPrivilege	2468	powershell.exe
Token: SeDebugPrivilege	2980	powershell.exe
Token: SeDebugPrivilege	3188	ff.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 3188 wrote to memory of 4092	3188	ff.exe	81
PID 3188 wrote to memory of 4092	3188	ff.exe	81
PID 3188 wrote to memory of 428	3188	ff.exe	83
PID 3188 wrote to memory of 428	3188	ff.exe	83
PID 3188 wrote to memory of 2468	3188	ff.exe	85
PID 3188 wrote to memory of 2468	3188	ff.exe	85
PID 3188 wrote to memory of 2980	3188	ff.exe	88
PID 3188 wrote to memory of 2980	3188	ff.exe	88

C:\Users\Admin\AppData\Local\Temp\ff.exe
"C:\Users\Admin\AppData\Local\Temp\ff.exe"
1⤵
- Drops startup file
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3188
- 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\ff.exe'
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:4092
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'ff.exe'
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:428
- 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\Roaming\XClient.exe'
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2468
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'XClient.exe'
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2980

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

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\powershell.exe.log

Filesize
2KB

MD5
627073ee3ca9676911bee35548eff2b8

SHA1
4c4b68c65e2cab9864b51167d710aa29ebdcff2e

SHA256
85b280a39fc31ba1e15fb06102a05b8405ff3b82feb181d4170f04e466dd647c

SHA512
3c5f6c03e253b83c57e8d6f0334187dbdcdf4fa549eecd36cbc1322dca6d3ca891dc6a019c49ec2eafb88f82d0434299c31e4dfaab123acb42e0546218f311fb

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

Filesize
944B

MD5
1a9fa92a4f2e2ec9e244d43a6a4f8fb9

SHA1
9910190edfaccece1dfcc1d92e357772f5dae8f7

SHA256
0ee052d5333fd5fd86bc84856fec98e045f077a7ac8051651bf7c521b9706888

SHA512
5d2361476fa22200e6f83883efe7dcb8c3fe7dae8d56e04e28a36e9ae1270c327b6aa161d92b239593da7661289d002c574446ecfd6bd19928209aae25e3ef64

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

Filesize
944B

MD5
b9b360b86f321509992675cbbb2c25f5

SHA1
c0dc0f9c0558894eaf0c3769d6381f85c45faa88

SHA256
9dcf8030e8774487863580166d2124101c8691de2e2d7f4a4be3cadd810237c2

SHA512
375949cd016ea6df701949dab08173e340f25141b7ca067d2baa98ce3c0b3e48b920bb7f2c59cdd4ab8a2c5d3b59cd38f241ea312aef145daef60dec03378af5

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

Filesize
944B

MD5
781da0576417bf414dc558e5a315e2be

SHA1
215451c1e370be595f1c389f587efeaa93108b4c

SHA256
41a5aef8b0bbeea2766f40a7bba2c78322379f167c610f7055ccb69e7db030fe

SHA512
24e283aa30a2903ebe154dad49b26067a45e46fec57549ad080d3b9ec3f272044efaaed3822d067837f5521262192f466c47195ffe7f75f8c7c5dcf3159ea737

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_kernh3g5.0r0.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/428-26-0x00007FF9E11D0000-0x00007FF9E1C92000-memory.dmp

Filesize
10.8MB

Download
memory/428-29-0x000001F86F220000-0x000001F86F230000-memory.dmp

Filesize
64KB

Download
memory/428-32-0x00007FF9E11D0000-0x00007FF9E1C92000-memory.dmp

Filesize
10.8MB

Download
memory/428-27-0x000001F86F220000-0x000001F86F230000-memory.dmp

Filesize
64KB

Download
memory/2468-45-0x00000272A2E80000-0x00000272A2E90000-memory.dmp

Filesize
64KB

Download
memory/2468-34-0x00000272A2E80000-0x00000272A2E90000-memory.dmp

Filesize
64KB

Download
memory/2468-35-0x00000272A2E80000-0x00000272A2E90000-memory.dmp

Filesize
64KB

Download
memory/2468-47-0x00007FF9E11D0000-0x00007FF9E1C92000-memory.dmp

Filesize
10.8MB

Download
memory/2468-33-0x00007FF9E11D0000-0x00007FF9E1C92000-memory.dmp

Filesize
10.8MB

Download
memory/2980-48-0x00007FF9E11D0000-0x00007FF9E1C92000-memory.dmp

Filesize
10.8MB

Download
memory/2980-57-0x000001586CA80000-0x000001586CA90000-memory.dmp

Filesize
64KB

Download
memory/2980-62-0x00007FF9E11D0000-0x00007FF9E1C92000-memory.dmp

Filesize
10.8MB

Download
memory/2980-60-0x000001586CA80000-0x000001586CA90000-memory.dmp

Filesize
64KB

Download
memory/2980-58-0x000001586CA80000-0x000001586CA90000-memory.dmp

Filesize
64KB

Download
memory/3188-1-0x00007FF9E11D0000-0x00007FF9E1C92000-memory.dmp

Filesize
10.8MB

Download
memory/3188-0-0x0000000000590000-0x00000000005A4000-memory.dmp

Filesize
80KB

Download
memory/3188-30-0x00007FF9E11D0000-0x00007FF9E1C92000-memory.dmp

Filesize
10.8MB

Download
memory/3188-67-0x000000001B330000-0x000000001B340000-memory.dmp

Filesize
64KB

Download
memory/3188-68-0x000000001B330000-0x000000001B340000-memory.dmp

Filesize
64KB

Download
memory/4092-2-0x00007FF9E11D0000-0x00007FF9E1C92000-memory.dmp

Filesize
10.8MB

Download
memory/4092-5-0x00000168C9910000-0x00000168C9920000-memory.dmp

Filesize
64KB

Download
memory/4092-10-0x00000168C9910000-0x00000168C9920000-memory.dmp

Filesize
64KB

Download
memory/4092-4-0x00000168B1460000-0x00000168B1482000-memory.dmp

Filesize
136KB

Download
memory/4092-16-0x00007FF9E11D0000-0x00007FF9E1C92000-memory.dmp

Filesize
10.8MB

Download

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