xtremerat | 38a1821065b4bb6a795931979792960a00f5a845a0f3d0e415d21ea6e787b7a8

General

Target

JaffaCakes118_b95558f4ad156875239e8e96c109eaf7.exe
Size

65KB
MD5

b95558f4ad156875239e8e96c109eaf7
SHA1

593a2036754c3086b7bcd65f6a9d07ebd86af982
SHA256

38a1821065b4bb6a795931979792960a00f5a845a0f3d0e415d21ea6e787b7a8
SHA512

8ce6f218e95a067f6c83742bd77b39a4746b63fc3f9fc78bfe5abbfd109a3f6b104af9e2e08ed54fc279451eca5cfab79f4ce564696457a84bba8e46393c16f6
SSDEEP

768:i8m1Sq4NQErBsH1tzoisBKQI6dObAG/dq8uW29Ifnca/yyR+P2ujfGiZKPA+7Xoe:Qsq+QV4rObAdXWpf/y+7ozNwiXoP

Score

10^/10

xtremerat discovery persistence rat spyware

Malware Config

Extracted

Family

xtremerat

C2

silent-hilll.no-ip.biz

Signatures

Detect XtremeRAT payload 3 IoCs

resource	yara_rule
behavioral1/memory/2792-0-0x0000000010000000-0x000000001004A000-memory.dmp	family_xtremerat
behavioral1/memory/2792-2-0x0000000010000000-0x000000001004A000-memory.dmp	family_xtremerat
behavioral1/memory/3184-3-0x0000000010000000-0x000000001004A000-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\{5460C4DF-B266-909E-CB58-E32B79832EB2}	JaffaCakes118_b95558f4ad156875239e8e96c109eaf7.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{5460C4DF-B266-909E-CB58-E32B79832EB2}\StubPath = "C:\\Windows\\InstallDir\\Server.exe restart"	JaffaCakes118_b95558f4ad156875239e8e96c109eaf7.exe

Adds Run key to start application 2 TTPs 2 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\HKLM = "C:\\Windows\\InstallDir\\Server.exe"	JaffaCakes118_b95558f4ad156875239e8e96c109eaf7.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3975168204-1612096350-4002976354-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\HKCU = "C:\\Windows\\InstallDir\\Server.exe"	JaffaCakes118_b95558f4ad156875239e8e96c109eaf7.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File opened for modification	C:\Windows\InstallDir\Server.exe	JaffaCakes118_b95558f4ad156875239e8e96c109eaf7.exe
File created	C:\Windows\InstallDir\Server.exe	JaffaCakes118_b95558f4ad156875239e8e96c109eaf7.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
6004	2792	WerFault.exe	85
5616	2792	WerFault.exe	85

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_b95558f4ad156875239e8e96c109eaf7.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
3184	JaffaCakes118_b95558f4ad156875239e8e96c109eaf7.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 3184 wrote to memory of 2792	3184	JaffaCakes118_b95558f4ad156875239e8e96c109eaf7.exe	85
PID 3184 wrote to memory of 2792	3184	JaffaCakes118_b95558f4ad156875239e8e96c109eaf7.exe	85
PID 3184 wrote to memory of 2792	3184	JaffaCakes118_b95558f4ad156875239e8e96c109eaf7.exe	85
PID 3184 wrote to memory of 2792	3184	JaffaCakes118_b95558f4ad156875239e8e96c109eaf7.exe	85

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_b95558f4ad156875239e8e96c109eaf7.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_b95558f4ad156875239e8e96c109eaf7.exe"
1⤵
- 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
- Suspicious use of WriteProcessMemory
PID:3184
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2792
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 2792 -s 480
    3⤵
    - Program crash
    PID:6004
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 2792 -s 488
    3⤵
    - Program crash
    PID:5616

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 2792 -ip 2792
1⤵
PID:4204

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 516 -p 2792 -ip 2792
1⤵
PID:2436

Network

MITRE ATT&CK Enterprise v16

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/2792-0-0x0000000010000000-0x000000001004A000-memory.dmp

Filesize
296KB

Download
memory/2792-2-0x0000000010000000-0x000000001004A000-memory.dmp

Filesize
296KB

Download
memory/3184-3-0x0000000010000000-0x000000001004A000-memory.dmp

Filesize
296KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v16

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Downloads