xtremerat | b9021561415bff1468c140ce32431baf1ee6f94aeacf450634f2b76232055438

General

Target

JaffaCakes118_f0e35d7526ac18475f1cfcdd6c772a8c.exe
Size

211KB
MD5

f0e35d7526ac18475f1cfcdd6c772a8c
SHA1

525a6d099216ae252d803f0e47806a55621e6d9e
SHA256

b9021561415bff1468c140ce32431baf1ee6f94aeacf450634f2b76232055438
SHA512

923ccad09ede28890165792c9229076ba55683efb989da85dea14048abed45abd8ca40af77d4a086f5701daabbcc6da415e0c737bb98029dfcf411b2a0c3ab0a
SSDEEP

6144:dqZ7oEYoRAQaUbRZH+CHRSwI7PTn422b4HuwIAXbPZcry+wNKevSK0b4EeU:da7TFUUbRMCf

Score

10^/10

xtremerat discovery persistence rat spyware

Malware Config

Extracted

Family

xtremerat

C2

abcdgl.mooo.com

88.net

ƁᏘ캸glhacker.zapto.org

glhacwthackupdate.no-ip.biz

ƁᏘ캸winrarsfx.linkpc.net

winraabcdgl.mooo.com

.net

Signatures

Detect XtremeRAT payload 7 IoCs

resource	yara_rule
behavioral2/files/0x000c000000023ca5-6.dat	family_xtremerat
behavioral2/memory/2080-26-0x0000000000C80000-0x0000000000C93000-memory.dmp	family_xtremerat
behavioral2/memory/4472-30-0x0000000000C80000-0x0000000000C93000-memory.dmp	family_xtremerat
behavioral2/memory/2336-33-0x0000000000C80000-0x0000000000C93000-memory.dmp	family_xtremerat
behavioral2/memory/3116-34-0x0000000000C80000-0x0000000000C93000-memory.dmp	family_xtremerat
behavioral2/memory/2336-37-0x0000000000C80000-0x0000000000C93000-memory.dmp	family_xtremerat
behavioral2/memory/2336-36-0x0000000000C80000-0x0000000000C93000-memory.dmp	family_xtremerat

Modifies WinLogon for persistence 2 TTPs 4 IoCs

persistence

Winlogon Helper DLL

T1547.004

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe C:\\Windows\\Microsoft\\update.exe"	server.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-705198581-2062733989-3666524522-1000\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe C:\\Windows\\Microsoft\\update.exe"	server.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-705198581-2062733989-3666524522-1000\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe C:\\Windows\\Microsoft\\update.exe"	svchost.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe C:\\Windows\\Microsoft\\update.exe"	svchost.exe

XtremeRAT
The XtremeRAT was developed by xtremecoder and has been available since at least 2010, and written in Delphi.
persistence spyware rat xtremerat
Xtremerat family
xtremerat

Adds policy Run key to start application 2 TTPs 8 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run\winupdate = "C:\\Windows\\Microsoft\\update.exe"	server.exe
Key created	\REGISTRY\USER\S-1-5-21-705198581-2062733989-3666524522-1000\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run	server.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-705198581-2062733989-3666524522-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run\winupdate = "C:\\Windows\\Microsoft\\update.exe"	server.exe
Key created	\REGISTRY\USER\S-1-5-21-705198581-2062733989-3666524522-1000\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run	svchost.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-705198581-2062733989-3666524522-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run\winupdate = "C:\\Windows\\Microsoft\\update.exe"	svchost.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run	svchost.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run\winupdate = "C:\\Windows\\Microsoft\\update.exe"	svchost.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run	server.exe

Boot or Logon Autostart Execution: Active Setup 2 TTPs 4 IoCs

Adversaries may achieve persistence by adding a Registry key to the Active Setup of the local machine.

persistence

Active Setup

T1547.014

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\MACHINE\Software\WOW6432Node\Microsoft\Active Setup\Installed Components\{C4EL34C4-EOX8-G74W-4066-AU2QRKI1J2A3}	server.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{C4EL34C4-EOX8-G74W-4066-AU2QRKI1J2A3}\StubPath = "C:\\Windows\\Microsoft\\update.exe restart"	server.exe
Key created	\REGISTRY\MACHINE\Software\WOW6432Node\Microsoft\Active Setup\Installed Components\{C4EL34C4-EOX8-G74W-4066-AU2QRKI1J2A3}	svchost.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{C4EL34C4-EOX8-G74W-4066-AU2QRKI1J2A3}\StubPath = "C:\\Windows\\Microsoft\\update.exe restart"	svchost.exe

Downloads MZ/PE file 1 IoCs

flow	pid	Process
54	840	Process not Found

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-1-5-21-705198581-2062733989-3666524522-1000\Control Panel\International\Geo\Nation	JaffaCakes118_f0e35d7526ac18475f1cfcdd6c772a8c.exe

Executes dropped EXE 2 IoCs

pid	Process
3116	server.exe
4340	Wolfteam++.exe

Adds Run key to start application 2 TTPs 8 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\winupdate = "C:\\Windows\\Microsoft\\update.exe"	server.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-705198581-2062733989-3666524522-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\winupdate = "C:\\Windows\\Microsoft\\update.exe"	server.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\RunOnce\winupdate = "C:\\Windows\\Microsoft\\update.exe"	server.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-705198581-2062733989-3666524522-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\RunOnce\winupdate = "C:\\Windows\\Microsoft\\update.exe"	server.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\winupdate = "C:\\Windows\\Microsoft\\update.exe"	svchost.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-705198581-2062733989-3666524522-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\winupdate = "C:\\Windows\\Microsoft\\update.exe"	svchost.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-705198581-2062733989-3666524522-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\RunOnce\winupdate = "C:\\Windows\\Microsoft\\update.exe"	svchost.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\RunOnce\winupdate = "C:\\Windows\\Microsoft\\update.exe"	svchost.exe

Drops file in Windows directory 3 IoCs

description	ioc	Process
File opened for modification	C:\Windows\Microsoft\update.exe	server.exe
File created	C:\Windows\Microsoft\update.exe	server.exe
File opened for modification	C:\Windows\Microsoft\	server.exe

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 7 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	Wolfteam++.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	explorer.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	MicrosoftEdgeUpdate.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_f0e35d7526ac18475f1cfcdd6c772a8c.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	server.exe

System Network Configuration Discovery: Internet Connection Discovery 1 TTPs 1 IoCs

Adversaries may check for Internet connectivity on compromised systems.

discovery

Internet Connection Discovery

T1016.001

pid	Process
4444	MicrosoftEdgeUpdate.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
4404	JaffaCakes118_f0e35d7526ac18475f1cfcdd6c772a8c.exe
2336	svchost.exe

Suspicious use of WriteProcessMemory 24 IoCs

description	pid	Process	procid_target
PID 4404 wrote to memory of 3116	4404	JaffaCakes118_f0e35d7526ac18475f1cfcdd6c772a8c.exe	87
PID 4404 wrote to memory of 3116	4404	JaffaCakes118_f0e35d7526ac18475f1cfcdd6c772a8c.exe	87
PID 4404 wrote to memory of 3116	4404	JaffaCakes118_f0e35d7526ac18475f1cfcdd6c772a8c.exe	87
PID 4404 wrote to memory of 4340	4404	JaffaCakes118_f0e35d7526ac18475f1cfcdd6c772a8c.exe	88
PID 4404 wrote to memory of 4340	4404	JaffaCakes118_f0e35d7526ac18475f1cfcdd6c772a8c.exe	88
PID 4404 wrote to memory of 4340	4404	JaffaCakes118_f0e35d7526ac18475f1cfcdd6c772a8c.exe	88
PID 3116 wrote to memory of 2080	3116	server.exe	89
PID 3116 wrote to memory of 2080	3116	server.exe	89
PID 3116 wrote to memory of 2080	3116	server.exe	89
PID 3116 wrote to memory of 2080	3116	server.exe	89
PID 3116 wrote to memory of 4636	3116	server.exe	91
PID 3116 wrote to memory of 4636	3116	server.exe	91
PID 3116 wrote to memory of 4636	3116	server.exe	91
PID 3116 wrote to memory of 4472	3116	server.exe	93
PID 3116 wrote to memory of 4472	3116	server.exe	93
PID 3116 wrote to memory of 4472	3116	server.exe	93
PID 3116 wrote to memory of 4472	3116	server.exe	93
PID 3116 wrote to memory of 4040	3116	server.exe	94
PID 3116 wrote to memory of 4040	3116	server.exe	94
PID 3116 wrote to memory of 4040	3116	server.exe	94
PID 3116 wrote to memory of 2336	3116	server.exe	95
PID 3116 wrote to memory of 2336	3116	server.exe	95
PID 3116 wrote to memory of 2336	3116	server.exe	95
PID 3116 wrote to memory of 2336	3116	server.exe	95

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_f0e35d7526ac18475f1cfcdd6c772a8c.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_f0e35d7526ac18475f1cfcdd6c772a8c.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4404
- C:\server.exe
  "C:\server.exe"
  2⤵
  - Modifies WinLogon for persistence
  - Adds policy Run key to start application
  - Boot or Logon Autostart Execution: Active Setup
  - Executes dropped EXE
  - Adds Run key to start application
  - Drops file in Windows directory
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:3116
- - C:\Windows\SysWOW64\svchost.exe
    svchost.exe
    3⤵
    - Modifies WinLogon for persistence
    - Adds policy Run key to start application
    - Boot or Logon Autostart Execution: Active Setup
    - Adds Run key to start application
    - System Location Discovery: System Language Discovery
    PID:2080
- - C:\Windows\SysWOW64\svchost.exe
    svchost.exe
    3⤵
    PID:4636
- - C:\Windows\SysWOW64\explorer.exe
    explorer.exe
    3⤵
    - System Location Discovery: System Language Discovery
    PID:4472
- - C:\Windows\SysWOW64\svchost.exe
    svchost.exe
    3⤵
    PID:4040
- - C:\Windows\SysWOW64\svchost.exe
    svchost.exe
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of SetWindowsHookEx
    PID:2336
- C:\Wolfteam++.exe
  "C:\Wolfteam++.exe"
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  PID:4340

C:\Program Files (x86)\Microsoft\EdgeUpdate\MicrosoftEdgeUpdate.exe
"C:\Program Files (x86)\Microsoft\EdgeUpdate\MicrosoftEdgeUpdate.exe" /ping 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-PGFwcCBhcHBpZD0iezhBNjlEMzQ1LUQ1NjQtNDYzYy1BRkYxLUE2OUQ5RTUzMEY5Nn0iIHZlcnNpb249IjEyMy4wLjYzMTIuMTIzIiBuZXh0dmVyc2lvbj0iIiBsYW5nPSJlbiIgYnJhbmQ9IkdHTFMiIGNsaWVudD0iIiBpbnN0YWxsYWdlPSI0IiBpbnN0YWxsZGF0ZXRpbWU9IjE3Mzg5NDU4NjAiIG9vYmVfaW5zdGFsbF90aW1lPSIxMzM4MzQxODIxNjMwOTAwMDAiPjxldmVudCBldmVudHR5cGU9IjMxIiBldmVudHJlc3VsdD0iMSIgZXJyb3Jjb2RlPSIwIiBleHRyYWNvZGUxPSIyMTc5ODYyIiBzeXN0ZW1fdXB0aW1lX3RpY2tzPSI1MTUyMTg3NzMyIi8-PC9hcHA-PC9yZXF1ZXN0Pg
1⤵
- System Location Discovery: System Language Discovery
- System Network Configuration Discovery: Internet Connection Discovery
PID:4444

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

4

T1547

Active Setup

1

T1547.014

Registry Run Keys / Startup Folder

2

T1547.001

Winlogon Helper DLL

1

T1547.004

Privilege Escalation

Boot or Logon Autostart Execution

4

T1547

Active Setup

1

T1547.014

Registry Run Keys / Startup Folder

2

T1547.001

Winlogon Helper DLL

1

T1547.004

Defense Evasion

Modify Registry

4

T1112

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

System Network Configuration Discovery

1

T1016

Internet Connection Discovery

1

T1016.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Wolfteam++.exe

Filesize
127KB

MD5
a33d838a724bdb6c4776c83cade05c8d

SHA1
1d461f8ce81fd9158206087257b4141e4210d589

SHA256
c87f6de3b8d6d0c21c3c3270322688199d1ca583f470f1ccf9a12c4326b745df

SHA512
d5e0628bef30ef699ce61501d7dd05eecc96a531dea471e8abd889bccfa1e71fb2e07e01cb70402546cdbe16c812a49a3c71f20846dfa6f5de1eb3b45b58c0a1

Download Submit
C:\server.exe

Filesize
44KB

MD5
a32d0301ec441c45da2e43061fa602b9

SHA1
cdb3fadd221c522141c927695f3d42eb5f579c16

SHA256
c7f4a0c976caa8f3b5a79bdd3235d0108a2670e6e6f2a412aa0d6fb7d3c6120a

SHA512
c18d9e6468e149f7c525ce64965324e62f2ce6df37138ce1a4401fde227bbbd61600c9947fce477759ad82e634bedd70bb7a6de4e6014338708bff06e88ff18d

Download Submit
memory/2080-26-0x0000000000C80000-0x0000000000C93000-memory.dmp

Filesize
76KB

Download
memory/2336-37-0x0000000000C80000-0x0000000000C93000-memory.dmp

Filesize
76KB

Download
memory/2336-33-0x0000000000C80000-0x0000000000C93000-memory.dmp

Filesize
76KB

Download
memory/2336-36-0x0000000000C80000-0x0000000000C93000-memory.dmp

Filesize
76KB

Download
memory/3116-34-0x0000000000C80000-0x0000000000C93000-memory.dmp

Filesize
76KB

Download
memory/4340-25-0x0000000000E00000-0x0000000000E23000-memory.dmp

Filesize
140KB

Download
memory/4340-27-0x0000000005F50000-0x00000000064F4000-memory.dmp

Filesize
5.6MB

Download
memory/4340-29-0x00000000058A0000-0x0000000005932000-memory.dmp

Filesize
584KB

Download
memory/4340-31-0x0000000005890000-0x00000000058A0000-memory.dmp

Filesize
64KB

Download
memory/4340-32-0x0000000005850000-0x000000000585A000-memory.dmp

Filesize
40KB

Download
memory/4340-18-0x0000000072EEE000-0x0000000072EEF000-memory.dmp

Filesize
4KB

Download
memory/4340-39-0x0000000072EEE000-0x0000000072EEF000-memory.dmp

Filesize
4KB

Download
memory/4340-40-0x0000000005890000-0x00000000058A0000-memory.dmp

Filesize
64KB

Download
memory/4472-30-0x0000000000C80000-0x0000000000C93000-memory.dmp

Filesize
76KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads