xworm | b01bb940254688c9ff0f2f7e0acc73ac7aa6c0e01c80f9417524cf7150edadfa

General

Target

z842jxn2/z872jxn2.exe
Size

69KB
MD5

96d20619f6fca9f8ce04ee826bd49a1a
SHA1

bbbb18c9c4a38dad5ce8cdc4dfc7bced7fa545e7
SHA256

8df2b4dae2428156b659ae3e080ee5bbb71ef51c26eb90341b23ebce1217ac48
SHA512

e21ef50bb1a94005ad42047c4f4ecafc5eaf56ff0ca682d79acaa885ed1f50cd1666ac98e7f111ab8879e8957ca982d2143613a12ae554308287cea901da8dca
SSDEEP

1536:4piY3bmV6IfVQitW8n8aWPbQ40UqlSIgg6vgaOgy6x3c:uV3bmrfVQitX0bQ43IgROgy65c

Score

10^/10

xworm persistence rat trojan

Malware Config

Extracted

Family

xworm

C2

195.35.2.168:7000

86.29.59.189:7000

72.59.79.119:7000

52.12.52.167:7000

16.39.62.122:7000

Attributes

Install_directory
%Public%
install_file
USB.exe
telegram
https://api.telegram.org/bot7082635030:AAGxz6qjNlJ3WqLSL0ZicFOCA9YHE32yRzQ/sendMessage?chat_id=6484754327

Signatures

Detect Xworm Payload 2 IoCs

resource	yara_rule
behavioral4/memory/3600-0-0x0000000000C40000-0x0000000000C58000-memory.dmp	family_xworm
behavioral4/files/0x0009000000023391-72.dat	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-1-5-21-259785868-298165991-4178590326-1000\Control Panel\International\Geo\Nation	z872jxn2.exe

Drops startup file 2 IoCs

description	ioc	Process
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\FileExplore.lnk	z872jxn2.exe
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\FileExplore.lnk	z872jxn2.exe

Executes dropped EXE 2 IoCs

pid	Process
3112	FileExplore
3800	FileExplore

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-1-5-21-259785868-298165991-4178590326-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\FileExplore = "C:\\Users\\Public\\FileExplore"	z872jxn2.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
19	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
3512	schtasks.exe

Suspicious behavior: AddClipboardFormatListener 1 IoCs

pid	Process
3600	z872jxn2.exe

Suspicious behavior: EnumeratesProcesses 9 IoCs

pid	Process
3968	powershell.exe
3968	powershell.exe
4112	powershell.exe
4112	powershell.exe
1032	powershell.exe
1032	powershell.exe
4900	powershell.exe
4900	powershell.exe
3600	z872jxn2.exe

Suspicious use of AdjustPrivilegeToken 8 IoCs

description	pid	Process
Token: SeDebugPrivilege	3600	z872jxn2.exe
Token: SeDebugPrivilege	3968	powershell.exe
Token: SeDebugPrivilege	4112	powershell.exe
Token: SeDebugPrivilege	1032	powershell.exe
Token: SeDebugPrivilege	4900	powershell.exe
Token: SeDebugPrivilege	3600	z872jxn2.exe
Token: SeDebugPrivilege	3112	FileExplore
Token: SeDebugPrivilege	3800	FileExplore

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
3600	z872jxn2.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 3600 wrote to memory of 3968	3600	z872jxn2.exe	88
PID 3600 wrote to memory of 3968	3600	z872jxn2.exe	88
PID 3600 wrote to memory of 4112	3600	z872jxn2.exe	90
PID 3600 wrote to memory of 4112	3600	z872jxn2.exe	90
PID 3600 wrote to memory of 1032	3600	z872jxn2.exe	92
PID 3600 wrote to memory of 1032	3600	z872jxn2.exe	92
PID 3600 wrote to memory of 4900	3600	z872jxn2.exe	94
PID 3600 wrote to memory of 4900	3600	z872jxn2.exe	94
PID 3600 wrote to memory of 3512	3600	z872jxn2.exe	99
PID 3600 wrote to memory of 3512	3600	z872jxn2.exe	99

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\z842jxn2\z872jxn2.exe
"C:\Users\Admin\AppData\Local\Temp\z842jxn2\z872jxn2.exe"
1⤵
- Checks computer location settings
- 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:3600
- 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\z842jxn2\z872jxn2.exe'
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:3968
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'z872jxn2.exe'
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:4112
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionPath 'C:\Users\Public\FileExplore'
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1032
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'FileExplore'
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:4900
- C:\Windows\System32\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "FileExplore" /tr "C:\Users\Public\FileExplore"
  2⤵
  - Creates scheduled task(s)
  PID:3512

C:\Users\Public\FileExplore
C:\Users\Public\FileExplore
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:3112

C:\Users\Public\FileExplore
C:\Users\Public\FileExplore
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:3800

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

2

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

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

Filesize
654B

MD5
2ff39f6c7249774be85fd60a8f9a245e

SHA1
684ff36b31aedc1e587c8496c02722c6698c1c4e

SHA256
e1b91642d85d98124a6a31f710e137ab7fd90dec30e74a05ab7fcf3b7887dced

SHA512
1d7e8b92ef4afd463d62cfa7e8b9d1799db5bf2a263d3cd7840df2e0a1323d24eb595b5f8eb615c6cb15f9e3a7b4fc99f8dd6a3d34479222e966ec708998aed1

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

Filesize
2KB

MD5
d85ba6ff808d9e5444a4b369f5bc2730

SHA1
31aa9d96590fff6981b315e0b391b575e4c0804a

SHA256
84739c608a73509419748e4e20e6cc4e1846056c3fe1929a8300d5a1a488202f

SHA512
8c414eb55b45212af385accc16d9d562adba2123583ce70d22b91161fe878683845512a78f04dedd4ea98ed9b174dbfa98cf696370598ad8e6fbd1e714f1f249

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

Filesize
944B

MD5
731e9e4becec0b1ef9caad4b3562d4b4

SHA1
6dffb77aba4e92ad5bd4b7c02fdee6f328bcd457

SHA256
71c7eca538938fa4d5b470fee41cfe43734e9beb9ae409d5b41111fa1a15c2d5

SHA512
841cf559ae5b0feec4be43018717641399b3602a553112e98b07d498f1a44169924466abc7e2313b8e8cf1c0fdc1bb7635e2818aab8269b0ef349a0ba0cd6ae5

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

Filesize
944B

MD5
eb1ad317bd25b55b2bbdce8a28a74a94

SHA1
98a3978be4d10d62e7411946474579ee5bdc5ea6

SHA256
9e94e7c9ac6134ee30e79498558aa1a5a1ac79a643666c3f8922eed215dd3a98

SHA512
d011f266c0240d84470c0f9577cd9e4927309bd19bb38570ca9704ed8e1d159f9bea982a59d3eefef72ce7a10bd81208b82e88ef57c7af587f7437a89769adc0

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

Filesize
944B

MD5
4e9501355f9b9c29f3e513dd16bccd0f

SHA1
aafec5955d615aebe241e9f4103ead5cbc213b57

SHA256
febe8c795e0d64ebcc0f2d2394e58ce20c30a23991c8196c65b604581b5d2fa4

SHA512
06d9a546a6a250e86d689fb46c46a6f5df374caab0ad8b7914186b696a8891ba2c0dd4f0e67fdd7f60b539d8b20a44df5fecf792bc15f5e05ebb3d5604afa7ca

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_c1ra0cl4.shi.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
C:\Users\Public\FileExplore

Filesize
69KB

MD5
96d20619f6fca9f8ce04ee826bd49a1a

SHA1
bbbb18c9c4a38dad5ce8cdc4dfc7bced7fa545e7

SHA256
8df2b4dae2428156b659ae3e080ee5bbb71ef51c26eb90341b23ebce1217ac48

SHA512
e21ef50bb1a94005ad42047c4f4ecafc5eaf56ff0ca682d79acaa885ed1f50cd1666ac98e7f111ab8879e8957ca982d2143613a12ae554308287cea901da8dca

Download Submit
memory/1032-51-0x00007FFDCDD80000-0x00007FFDCE841000-memory.dmp

Filesize
10.8MB

Download
memory/1032-50-0x000002341F4D0000-0x000002341F6EC000-memory.dmp

Filesize
2.1MB

Download
memory/1032-48-0x0000023406EC0000-0x0000023406ED0000-memory.dmp

Filesize
64KB

Download
memory/1032-47-0x0000023406EC0000-0x0000023406ED0000-memory.dmp

Filesize
64KB

Download
memory/1032-46-0x00007FFDCDD80000-0x00007FFDCE841000-memory.dmp

Filesize
10.8MB

Download
memory/3112-76-0x00007FFDCDD80000-0x00007FFDCE841000-memory.dmp

Filesize
10.8MB

Download
memory/3112-74-0x00007FFDCDD80000-0x00007FFDCE841000-memory.dmp

Filesize
10.8MB

Download
memory/3600-2-0x000000001B890000-0x000000001B8A0000-memory.dmp

Filesize
64KB

Download
memory/3600-70-0x00007FFDCDD80000-0x00007FFDCE841000-memory.dmp

Filesize
10.8MB

Download
memory/3600-1-0x00007FFDCDD80000-0x00007FFDCE841000-memory.dmp

Filesize
10.8MB

Download
memory/3600-71-0x000000001B890000-0x000000001B8A0000-memory.dmp

Filesize
64KB

Download
memory/3600-0-0x0000000000C40000-0x0000000000C58000-memory.dmp

Filesize
96KB

Download
memory/3800-81-0x00007FFDCDD80000-0x00007FFDCE841000-memory.dmp

Filesize
10.8MB

Download
memory/3800-80-0x00007FFDCDD80000-0x00007FFDCE841000-memory.dmp

Filesize
10.8MB

Download
memory/3968-18-0x00007FFDCDD80000-0x00007FFDCE841000-memory.dmp

Filesize
10.8MB

Download
memory/3968-17-0x000001C899BC0000-0x000001C899DDC000-memory.dmp

Filesize
2.1MB

Download
memory/3968-3-0x00007FFDCDD80000-0x00007FFDCE841000-memory.dmp

Filesize
10.8MB

Download
memory/3968-4-0x000001C899B40000-0x000001C899B50000-memory.dmp

Filesize
64KB

Download
memory/3968-5-0x000001C8FFD60000-0x000001C8FFD82000-memory.dmp

Filesize
136KB

Download
memory/4112-35-0x00007FFDCDD80000-0x00007FFDCE841000-memory.dmp

Filesize
10.8MB

Download
memory/4112-34-0x0000025F67980000-0x0000025F67B9C000-memory.dmp

Filesize
2.1MB

Download
memory/4112-31-0x0000025F4F210000-0x0000025F4F220000-memory.dmp

Filesize
64KB

Download
memory/4112-20-0x00007FFDCDD80000-0x00007FFDCE841000-memory.dmp

Filesize
10.8MB

Download
memory/4112-21-0x0000025F4F210000-0x0000025F4F220000-memory.dmp

Filesize
64KB

Download
memory/4900-66-0x00007FFDCDD80000-0x00007FFDCE841000-memory.dmp

Filesize
10.8MB

Download
memory/4900-57-0x00007FFDCDD80000-0x00007FFDCE841000-memory.dmp

Filesize
10.8MB

Download
memory/4900-63-0x0000022576470000-0x0000022576480000-memory.dmp

Filesize
64KB

Download
memory/4900-62-0x0000022576470000-0x0000022576480000-memory.dmp

Filesize
64KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads