xtremerat | d4b3b42b4b08f3cfc8797e45d3d91901681bc4eff4a45e2254c4faa6820a21ca

General

Target

9414d0122883037eb97e8f678de853a5_JaffaCakes118.exe
Size

142KB
MD5

9414d0122883037eb97e8f678de853a5
SHA1

9bf1b6c180885052dcbadde767ac07c8637fe4aa
SHA256

d4b3b42b4b08f3cfc8797e45d3d91901681bc4eff4a45e2254c4faa6820a21ca
SHA512

aba06c12a466950e787630dbc8a7597b12f2a1e370770f1d755d0d83c57213c85aaa3543002ffc068435c43fbf1c3fccb01c9a5c775a2569e747c833502ce062
SSDEEP

1536:ISU77zF16QvCkFbmn2DHXIe1M0OA8F8Two0zCf4O1LhrUaNXCkxop7P8KH90q:ISyCQvCkFbA72hl0zCA+LpE7EEf

Score

10^/10

xtremerat discovery persistence rat spyware upx

Malware Config

Extracted

Family

xtremerat

C2

l1merain.zapto.org

Ⲥ漙m蠀C:\Windl1merain.zapto.org

C:\Usl1merain.zapto.org

Signatures

Detect XtremeRAT payload 3 IoCs

Processes:

resource	yara_rule
behavioral1/memory/2604-23-0x0000000000C80000-0x0000000000C96000-memory.dmp	family_xtremerat
behavioral1/memory/2856-24-0x0000000000C80000-0x0000000000C96000-memory.dmp	family_xtremerat
behavioral1/memory/2604-25-0x0000000000C80000-0x0000000000C96000-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

Processes:

%tmp%.exe

description	ioc	Process
Key created	\REGISTRY\MACHINE\Software\Wow6432Node\Microsoft\Active Setup\Installed Components\{5460C4DF-B266-909E-CB58-E32B79832EB2}	%tmp%.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"	%tmp%.exe

Executes dropped EXE 1 IoCs

Processes:

%tmp%.exe

pid	Process
2856	%tmp%.exe

Loads dropped DLL 2 IoCs

Processes:

9414d0122883037eb97e8f678de853a5_JaffaCakes118.exe

pid	Process
1740	9414d0122883037eb97e8f678de853a5_JaffaCakes118.exe
1740	9414d0122883037eb97e8f678de853a5_JaffaCakes118.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

%tmp%.exe

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-312935884-697965778-3955649944-1000\Software\Microsoft\Windows\CurrentVersion\Run\HKCU = "C:\\Windows\\InstallDir\\Server.exe"	%tmp%.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\HKLM = "C:\\Windows\\InstallDir\\Server.exe"	%tmp%.exe

UPX packed file 5 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

Processes:

resource	yara_rule
behavioral1/files/0x00070000000173ee-7.dat	upx
behavioral1/memory/2856-15-0x0000000000C80000-0x0000000000C96000-memory.dmp	upx
behavioral1/memory/2604-23-0x0000000000C80000-0x0000000000C96000-memory.dmp	upx
behavioral1/memory/2856-24-0x0000000000C80000-0x0000000000C96000-memory.dmp	upx
behavioral1/memory/2604-25-0x0000000000C80000-0x0000000000C96000-memory.dmp	upx

Drops file in Windows directory 2 IoCs

Processes:

%tmp%.exe

description	ioc	Process
File opened for modification	C:\Windows\InstallDir\Server.exe	%tmp%.exe
File created	C:\Windows\InstallDir\Server.exe	%tmp%.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 3 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

Processes:

9414d0122883037eb97e8f678de853a5_JaffaCakes118.exe%tmp%.exesvchost.exe

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	9414d0122883037eb97e8f678de853a5_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	%tmp%.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe

Suspicious behavior: EnumeratesProcesses 9 IoCs

Processes:

9414d0122883037eb97e8f678de853a5_JaffaCakes118.exe

pid	Process
1740	9414d0122883037eb97e8f678de853a5_JaffaCakes118.exe
1740	9414d0122883037eb97e8f678de853a5_JaffaCakes118.exe
1740	9414d0122883037eb97e8f678de853a5_JaffaCakes118.exe
1740	9414d0122883037eb97e8f678de853a5_JaffaCakes118.exe
1740	9414d0122883037eb97e8f678de853a5_JaffaCakes118.exe
1740	9414d0122883037eb97e8f678de853a5_JaffaCakes118.exe
1740	9414d0122883037eb97e8f678de853a5_JaffaCakes118.exe
1740	9414d0122883037eb97e8f678de853a5_JaffaCakes118.exe
1740	9414d0122883037eb97e8f678de853a5_JaffaCakes118.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

9414d0122883037eb97e8f678de853a5_JaffaCakes118.exe

description	pid	Process
Token: SeDebugPrivilege	1740	9414d0122883037eb97e8f678de853a5_JaffaCakes118.exe

Suspicious use of WriteProcessMemory 9 IoCs

Processes:

9414d0122883037eb97e8f678de853a5_JaffaCakes118.exe%tmp%.exe

description	pid	Process	procid_target
PID 1740 wrote to memory of 2856	1740	9414d0122883037eb97e8f678de853a5_JaffaCakes118.exe	32
PID 1740 wrote to memory of 2856	1740	9414d0122883037eb97e8f678de853a5_JaffaCakes118.exe	32
PID 1740 wrote to memory of 2856	1740	9414d0122883037eb97e8f678de853a5_JaffaCakes118.exe	32
PID 1740 wrote to memory of 2856	1740	9414d0122883037eb97e8f678de853a5_JaffaCakes118.exe	32
PID 2856 wrote to memory of 2604	2856	%tmp%.exe	33
PID 2856 wrote to memory of 2604	2856	%tmp%.exe	33
PID 2856 wrote to memory of 2604	2856	%tmp%.exe	33
PID 2856 wrote to memory of 2604	2856	%tmp%.exe	33
PID 2856 wrote to memory of 2604	2856	%tmp%.exe	33

C:\Users\Admin\AppData\Local\Temp\9414d0122883037eb97e8f678de853a5_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\9414d0122883037eb97e8f678de853a5_JaffaCakes118.exe"
1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1740
- C:\Users\Admin\AppData\Local\Temp\%tmp%.exe
  "C:\Users\Admin\AppData\Local\Temp\%tmp%.exe"
  2⤵
  - 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:2856
- - C:\Windows\SysWOW64\svchost.exe
    svchost.exe
    3⤵
    - System Location Discovery: System Language Discovery
    PID:2604

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

\Users\Admin\AppData\Local\Temp\%tmp%.exe

Filesize
21KB

MD5
3d914db17e3c0fc47ae86e894c9b0d41

SHA1
2ee90b300616fc09dec3c5bec56b83930fb09230

SHA256
e3727994fc25f34b2c960abe70f9fc79d74023a44a93ba7d42aaed9b33dcd47d

SHA512
872757a3f36a03f1cbfc861ae737d919857b6f8c496aec7e9e5b231e95650a715bb7c0f446f5a0d4f019851e02a3161fb6a871f3cd35bb03c62739c196ec8bb3

Download Submit
memory/1740-0-0x0000000074491000-0x0000000074492000-memory.dmp

Filesize
4KB

Download
memory/1740-1-0x0000000074490000-0x0000000074A3B000-memory.dmp

Filesize
5.7MB

Download
memory/1740-2-0x0000000074490000-0x0000000074A3B000-memory.dmp

Filesize
5.7MB

Download
memory/1740-14-0x00000000055F0000-0x0000000005606000-memory.dmp

Filesize
88KB

Download
memory/1740-13-0x00000000055F0000-0x0000000005606000-memory.dmp

Filesize
88KB

Download
memory/1740-16-0x0000000074490000-0x0000000074A3B000-memory.dmp

Filesize
5.7MB

Download
memory/2604-23-0x0000000000C80000-0x0000000000C96000-memory.dmp

Filesize
88KB

Download
memory/2604-25-0x0000000000C80000-0x0000000000C96000-memory.dmp

Filesize
88KB

Download
memory/2856-15-0x0000000000C80000-0x0000000000C96000-memory.dmp

Filesize
88KB

Download
memory/2856-24-0x0000000000C80000-0x0000000000C96000-memory.dmp

Filesize
88KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads