xtremerat | 7985cd8bd011ec614e1c8830557a6787b17bde184eafc0153f99b9836c6cd079

General

Target

cb1909decae91221030eea3453d66a50_JaffaCakes118.exe
Size

42KB
MD5

cb1909decae91221030eea3453d66a50
SHA1

99d7133dfe299994ac9d1a718706b63228d00afc
SHA256

7985cd8bd011ec614e1c8830557a6787b17bde184eafc0153f99b9836c6cd079
SHA512

ec28ccafae4b0aec51d2a0ef93f75242f355adf321ebe5710738fc5a01765cbcaa473ecca72f0b9cb7ab67b1fc747956d3011551e7f50102683f8f0663a4468b
SSDEEP

768:kyiUOm7d6CfXlNlhExmJDolbsFHY4hZR7B3BKhTssd:cnm7EgOmJD1dhzKhTssd

Score

10^/10

xtremerat discovery persistence rat spyware upx

Malware Config

Signatures

Detect XtremeRAT payload 5 IoCs

resource	yara_rule
behavioral2/memory/4048-5-0x0000000010000000-0x000000001004D000-memory.dmp	family_xtremerat
behavioral2/memory/1836-7-0x0000000010000000-0x000000001004D000-memory.dmp	family_xtremerat
behavioral2/memory/4048-9-0x0000000010000000-0x000000001004D000-memory.dmp	family_xtremerat
behavioral2/memory/1836-10-0x0000000010000000-0x000000001004D000-memory.dmp	family_xtremerat
behavioral2/memory/4048-11-0x0000000010000000-0x000000001004D000-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}	cb1909decae91221030eea3453d66a50_JaffaCakes118.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"	cb1909decae91221030eea3453d66a50_JaffaCakes118.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"	cb1909decae91221030eea3453d66a50_JaffaCakes118.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3227495264-2217614367-4027411560-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\HKCU = "C:\\Windows\\InstallDir\\Server.exe"	cb1909decae91221030eea3453d66a50_JaffaCakes118.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2328 set thread context of 4048	2328	cb1909decae91221030eea3453d66a50_JaffaCakes118.exe	82

UPX packed file 8 IoCs

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

upx

resource	yara_rule
behavioral2/memory/4048-2-0x0000000010000000-0x000000001004D000-memory.dmp	upx
behavioral2/memory/4048-4-0x0000000010000000-0x000000001004D000-memory.dmp	upx
behavioral2/memory/4048-5-0x0000000010000000-0x000000001004D000-memory.dmp	upx
behavioral2/memory/4048-6-0x0000000010000000-0x000000001004D000-memory.dmp	upx
behavioral2/memory/1836-7-0x0000000010000000-0x000000001004D000-memory.dmp	upx
behavioral2/memory/4048-9-0x0000000010000000-0x000000001004D000-memory.dmp	upx
behavioral2/memory/1836-10-0x0000000010000000-0x000000001004D000-memory.dmp	upx
behavioral2/memory/4048-11-0x0000000010000000-0x000000001004D000-memory.dmp	upx

Drops file in Windows directory 2 IoCs

description	ioc	Process
File opened for modification	C:\Windows\InstallDir\Server.exe	cb1909decae91221030eea3453d66a50_JaffaCakes118.exe
File created	C:\Windows\InstallDir\Server.exe	cb1909decae91221030eea3453d66a50_JaffaCakes118.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
1260	1836	WerFault.exe	83
3496	1836	WerFault.exe	83

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

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cb1909decae91221030eea3453d66a50_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cb1909decae91221030eea3453d66a50_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
2328	cb1909decae91221030eea3453d66a50_JaffaCakes118.exe
4048	cb1909decae91221030eea3453d66a50_JaffaCakes118.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 2328 wrote to memory of 4048	2328	cb1909decae91221030eea3453d66a50_JaffaCakes118.exe	82
PID 2328 wrote to memory of 4048	2328	cb1909decae91221030eea3453d66a50_JaffaCakes118.exe	82
PID 2328 wrote to memory of 4048	2328	cb1909decae91221030eea3453d66a50_JaffaCakes118.exe	82
PID 2328 wrote to memory of 4048	2328	cb1909decae91221030eea3453d66a50_JaffaCakes118.exe	82
PID 2328 wrote to memory of 4048	2328	cb1909decae91221030eea3453d66a50_JaffaCakes118.exe	82
PID 2328 wrote to memory of 4048	2328	cb1909decae91221030eea3453d66a50_JaffaCakes118.exe	82
PID 2328 wrote to memory of 4048	2328	cb1909decae91221030eea3453d66a50_JaffaCakes118.exe	82
PID 2328 wrote to memory of 4048	2328	cb1909decae91221030eea3453d66a50_JaffaCakes118.exe	82
PID 4048 wrote to memory of 1836	4048	cb1909decae91221030eea3453d66a50_JaffaCakes118.exe	83
PID 4048 wrote to memory of 1836	4048	cb1909decae91221030eea3453d66a50_JaffaCakes118.exe	83
PID 4048 wrote to memory of 1836	4048	cb1909decae91221030eea3453d66a50_JaffaCakes118.exe	83
PID 4048 wrote to memory of 1836	4048	cb1909decae91221030eea3453d66a50_JaffaCakes118.exe	83

C:\Users\Admin\AppData\Local\Temp\cb1909decae91221030eea3453d66a50_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\cb1909decae91221030eea3453d66a50_JaffaCakes118.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2328
- C:\Users\Admin\AppData\Local\Temp\cb1909decae91221030eea3453d66a50_JaffaCakes118.exe
  C:\Users\Admin\AppData\Local\Temp\cb1909decae91221030eea3453d66a50_JaffaCakes118.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
  - Suspicious use of WriteProcessMemory
  PID:4048
- - C:\Windows\SysWOW64\svchost.exe
    svchost.exe
    3⤵
    - System Location Discovery: System Language Discovery
    PID:1836
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 1836 -s 484
      4⤵
      Program crash
      PID:1260
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 1836 -s 492
      4⤵
      Program crash
      PID:3496

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 416 -p 1836 -ip 1836
1⤵
PID:2472

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 504 -p 1836 -ip 1836
1⤵
PID:2636

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/1836-7-0x0000000010000000-0x000000001004D000-memory.dmp

Filesize
308KB

Download
memory/1836-10-0x0000000010000000-0x000000001004D000-memory.dmp

Filesize
308KB

Download
memory/4048-2-0x0000000010000000-0x000000001004D000-memory.dmp

Filesize
308KB

Download
memory/4048-4-0x0000000010000000-0x000000001004D000-memory.dmp

Filesize
308KB

Download
memory/4048-5-0x0000000010000000-0x000000001004D000-memory.dmp

Filesize
308KB

Download
memory/4048-6-0x0000000010000000-0x000000001004D000-memory.dmp

Filesize
308KB

Download
memory/4048-9-0x0000000010000000-0x000000001004D000-memory.dmp

Filesize
308KB

Download
memory/4048-11-0x0000000010000000-0x000000001004D000-memory.dmp

Filesize
308KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads