xtremerat | 9b7945fe41a3a0bb26c48e3d001925bb0b5eafdc812daded2cf817d02dfb3e7d

General

Target

JaffaCakes118_b9940bdafb3e30b062b4b88e9d65a27f.exe
Size

65KB
MD5

b9940bdafb3e30b062b4b88e9d65a27f
SHA1

1fef0740910382bc4b8f897af9a573a58838d75a
SHA256

9b7945fe41a3a0bb26c48e3d001925bb0b5eafdc812daded2cf817d02dfb3e7d
SHA512

3384bb8404146d929463b138a22feaf52d35eab532fa5e1cba77185a5a88494229fdd372b09dda3f77e11ce1e89d5610814af9ca787848b9fd0e342b5b5fb5d3
SSDEEP

768:S8m1Sq4NQErBsH1tzoisBKQI6tObALkdq8uWH9Ifnca/yyR+P2ujf1iZKPA+7XoL:gsq+QV47ObATXW+f/yd7ozNwixo3I

Score

10^/10

xtremerat discovery persistence rat spyware

Malware Config

Extracted

Family

xtremerat

C2

x2ip.zapto.org

Signatures

Detect XtremeRAT payload 4 IoCs

resource	yara_rule
behavioral2/memory/4936-0-0x0000000010000000-0x000000001004A000-memory.dmp	family_xtremerat
behavioral2/memory/4248-1-0x0000000010000000-0x000000001004A000-memory.dmp	family_xtremerat
behavioral2/memory/4936-3-0x0000000010000000-0x000000001004A000-memory.dmp	family_xtremerat
behavioral2/memory/4936-4-0x0000000010000000-0x000000001004A000-memory.dmp	family_xtremerat

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

Boot or Logon Autostart Execution: Active Setup 2 TTPs 2 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\{MOP384PP-8P70-1CC1-60B1-86O1SD522T2S}	calc.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{MOP384PP-8P70-1CC1-60B1-86O1SD522T2S}\StubPath = "C:\\Windows\\Internets\\internet.exe restart"	calc.exe

Adds Run key to start application 2 TTPs 3 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-2045521122-590294423-3465680274-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\HKCU = "C:\\Windows\\Internets\\internet.exe"	calc.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2045521122-590294423-3465680274-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\HKCU = "%SERVER%"	calc.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\HKLM = "C:\\Windows\\Internets\\internet.exe"	calc.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File opened for modification	C:\Windows\Internets\internet.exe	calc.exe
File created	C:\Windows\Internets\internet.exe	calc.exe

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

System Information Discovery
T1082

Program crash 2 IoCs

pid	pid_target	Process	procid_target
4656	4936	WerFault.exe	83
3884	4936	WerFault.exe	83

System Location Discovery: System Language Discovery 1 TTPs 2 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	JaffaCakes118_b9940bdafb3e30b062b4b88e9d65a27f.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	calc.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4936	calc.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 4248 wrote to memory of 4936	4248	JaffaCakes118_b9940bdafb3e30b062b4b88e9d65a27f.exe	83
PID 4248 wrote to memory of 4936	4248	JaffaCakes118_b9940bdafb3e30b062b4b88e9d65a27f.exe	83
PID 4248 wrote to memory of 4936	4248	JaffaCakes118_b9940bdafb3e30b062b4b88e9d65a27f.exe	83
PID 4248 wrote to memory of 4936	4248	JaffaCakes118_b9940bdafb3e30b062b4b88e9d65a27f.exe	83

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_b9940bdafb3e30b062b4b88e9d65a27f.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_b9940bdafb3e30b062b4b88e9d65a27f.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4248
- C:\Windows\SysWOW64\calc.exe
  calc.exe
  2⤵
  - Boot or Logon Autostart Execution: Active Setup
  - Adds Run key to start application
  - Drops file in Windows directory
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  PID:4936
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 4936 -s 964
    3⤵
    - Program crash
    PID:4656
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 4936 -s 972
    3⤵
    - Program crash
    PID:3884

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 4936 -ip 4936
1⤵
PID:5096

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 412 -p 4936 -ip 4936
1⤵
PID:5072

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

2

T1547

Active Setup

1

T1547.014

Registry Run Keys / Startup Folder

1

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

2

T1547

Active Setup

1

T1547.014

Registry Run Keys / Startup Folder

1

T1547.001

Defense Evasion

Modify Registry

2

T1112

Credential Access

Discovery

System Information Discovery

1

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/4248-1-0x0000000010000000-0x000000001004A000-memory.dmp

Filesize
296KB

Download
memory/4936-0-0x0000000010000000-0x000000001004A000-memory.dmp

Filesize
296KB

Download
memory/4936-3-0x0000000010000000-0x000000001004A000-memory.dmp

Filesize
296KB

Download
memory/4936-4-0x0000000010000000-0x000000001004A000-memory.dmp

Filesize
296KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads