xworm | 2fab71d50a3b02c3729bde4f28e489b2346aac1829c467e19284741d34f0cf03

General

Target

A.exe
Size

50KB
MD5

a0de54573621a87cd95ce56ce7ab7a43
SHA1

c3d84eddaffcb63943627e4ba00c3c58200e4da3
SHA256

2fab71d50a3b02c3729bde4f28e489b2346aac1829c467e19284741d34f0cf03
SHA512

85606cdd15e70a067475f9f4352d98dd054228a56da7c22e69d88c91a8371dbfdbc2bb391c0d4118e4bd7a2e3e28a060887b4c28ba95c76c8757a184fcc7915c
SSDEEP

1536:Hf05a/CTjuX89IFc9Uy68OMNGadS1EAd8IIA:Hf05a/CTKM9IFc9U4OM9gEA6IIA

Score

10^/10

xworm rat trojan

Malware Config

Extracted

Family

xworm

Version

5.0

C2

85.203.4.127:1474

Mutex

i1kB13VVw1GEf0Fq

Attributes

Install_directory
%ProgramData%
install_file
VLC_Media.exe

aes.plain

Signatures

Detect Xworm Payload 1 IoCs

Processes:

resource	yara_rule
behavioral2/memory/3728-0-0x00000000006C0000-0x00000000006D2000-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

Processes:

A.exe

description ioc process

Key value queried \REGISTRY\USER\S-1-5-21-4084619521-2220719027-1909462854-1000\Control Panel\International\Geo\Nation A.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-4084619521-2220719027-1909462854-1000\Control Panel\International\Geo\Nation	A.exe

Drops startup file 2 IoCs

Processes:

A.exe

description	ioc	process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\VLC_Media.lnk	A.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\VLC_Media.lnk	A.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.

Processes:

flow ioc

18 ip-api.com
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

flow	ioc
18	ip-api.com

Suspicious behavior: EnumeratesProcesses 10 IoCs

Processes:

powershell.exepowershell.exepowershell.exepowershell.exeA.exe

pid	process
1080	powershell.exe
1080	powershell.exe
3376	powershell.exe
3376	powershell.exe
4460	powershell.exe
4460	powershell.exe
4012	powershell.exe
4012	powershell.exe
4012	powershell.exe
3728	A.exe

Suspicious use of AdjustPrivilegeToken 6 IoCs

Processes:

A.exepowershell.exepowershell.exepowershell.exepowershell.exe

description	pid	process
Token: SeDebugPrivilege	3728	A.exe
Token: SeDebugPrivilege	1080	powershell.exe
Token: SeDebugPrivilege	3376	powershell.exe
Token: SeDebugPrivilege	4460	powershell.exe
Token: SeDebugPrivilege	4012	powershell.exe
Token: SeDebugPrivilege	3728	A.exe

Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

A.exe

pid process

3728 A.exe

pid	process
3728	A.exe

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

A.exe

description	pid	process	target process
PID 3728 wrote to memory of 1080	3728	A.exe	powershell.exe
PID 3728 wrote to memory of 1080	3728	A.exe	powershell.exe
PID 3728 wrote to memory of 3376	3728	A.exe	powershell.exe
PID 3728 wrote to memory of 3376	3728	A.exe	powershell.exe
PID 3728 wrote to memory of 4460	3728	A.exe	powershell.exe
PID 3728 wrote to memory of 4460	3728	A.exe	powershell.exe
PID 3728 wrote to memory of 4012	3728	A.exe	powershell.exe
PID 3728 wrote to memory of 4012	3728	A.exe	powershell.exe

C:\Users\Admin\AppData\Local\Temp\A.exe
"C:\Users\Admin\AppData\Local\Temp\A.exe"
1⤵
- Checks computer location settings
- Drops startup file
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3728

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\A.exe'
2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:1080

C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'A.exe'
2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:3376

C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionPath 'C:\ProgramData\VLC_Media.exe'
2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:4460

C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'VLC_Media.exe'
2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:4012

Network

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

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Downloads

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
77d622bb1a5b250869a3238b9bc1402b

SHA1
d47f4003c2554b9dfc4c16f22460b331886b191b

SHA256
f97ff12a8abf4bf88bb6497bd2ac2da12628c8847a8ba5a9026bdbb76507cdfb

SHA512
d6789b5499f23c9035375a102271e17a8a82e57d6f5312fa24242e08a83efdeb8becb7622f55c4cf1b89c7d864b445df11f4d994cf7e2f87a900535bcca12fd9

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
ba169f4dcbbf147fe78ef0061a95e83b

SHA1
92a571a6eef49fff666e0f62a3545bcd1cdcda67

SHA256
5ef1421e19fde4bc03cd825dd7d6c0e7863f85fd8f0aa4a4d4f8d555dc7606d1

SHA512
8d2e5e552210dcda684682538bc964fdd8a8ff5b24cc2cc8af813729f0202191f98eb42d38d2355df17ae620fe401aad6ceaedaed3b112fdacd32485a3a0c07c

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_ywi2lnrz.pci.ps1
Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/1080-4-0x00007FFCDB160000-0x00007FFCDBC21000-memory.dmp

Filesize
10.8MB

Download
memory/1080-5-0x0000026DB9AF0000-0x0000026DB9B00000-memory.dmp

Filesize
64KB

Download
memory/1080-3-0x0000026DB9AB0000-0x0000026DB9AD2000-memory.dmp

Filesize
136KB

Download
memory/1080-18-0x00007FFCDB160000-0x00007FFCDBC21000-memory.dmp

Filesize
10.8MB

Download
memory/1080-15-0x0000026DB9AF0000-0x0000026DB9B00000-memory.dmp

Filesize
64KB

Download
memory/3376-29-0x00007FFCDB160000-0x00007FFCDBC21000-memory.dmp

Filesize
10.8MB

Download
memory/3376-32-0x0000026FC7D50000-0x0000026FC7D60000-memory.dmp

Filesize
64KB

Download
memory/3376-31-0x0000026FC7D50000-0x0000026FC7D60000-memory.dmp

Filesize
64KB

Download
memory/3376-34-0x00007FFCDB160000-0x00007FFCDBC21000-memory.dmp

Filesize
10.8MB

Download
memory/3728-0-0x00000000006C0000-0x00000000006D2000-memory.dmp

Filesize
72KB

Download
memory/3728-70-0x000000001B230000-0x000000001B240000-memory.dmp

Filesize
64KB

Download
memory/3728-69-0x00007FFCDB160000-0x00007FFCDBC21000-memory.dmp

Filesize
10.8MB

Download
memory/3728-1-0x00007FFCDB160000-0x00007FFCDBC21000-memory.dmp

Filesize
10.8MB

Download
memory/3728-2-0x000000001B230000-0x000000001B240000-memory.dmp

Filesize
64KB

Download
memory/4012-50-0x00007FFCDB160000-0x00007FFCDBC21000-memory.dmp

Filesize
10.8MB

Download
memory/4012-56-0x000002A585390000-0x000002A5853A0000-memory.dmp

Filesize
64KB

Download
memory/4012-62-0x000002A585390000-0x000002A5853A0000-memory.dmp

Filesize
64KB

Download
memory/4012-64-0x00007FFCDB160000-0x00007FFCDBC21000-memory.dmp

Filesize
10.8MB

Download
memory/4460-49-0x00007FFCDB160000-0x00007FFCDBC21000-memory.dmp

Filesize
10.8MB

Download
memory/4460-36-0x000002AB597B0000-0x000002AB597C0000-memory.dmp

Filesize
64KB

Download
memory/4460-37-0x000002AB597B0000-0x000002AB597C0000-memory.dmp

Filesize
64KB

Download
memory/4460-35-0x00007FFCDB160000-0x00007FFCDBC21000-memory.dmp

Filesize
10.8MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v13

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Downloads