xtremerat | afe04c9ca854b419b454924b8a049b934fdc589f34ce5c0b7a5d886f0f6950db

General

Target
00239af601ef4ac8dc6743e60f33d0cf_JaffaCakes118.exe
Size 160KB
Sample240621-271maavcqc
SHA256 afe04c9ca854b419b454924b8a049b934fdc589f34ce5c0b7a5d886f0f6950db
MD5 00239af601ef4ac8dc6743e60f33d0cf
SHA1 506e23ee835e9c68b0bcb19e9a8afc77a7e33b7c
SHA512 c4d3ef4e840a7ef44000972431b2a2c353c4795604368cfa5e457d2e34d7ae6e39d6ec30047c411a168b2e05eefcf082595933a57ed73d798cbb8b516abe7469
SSDEEP 1536:UCD9yguAiQS7MR+oXiJqAIi2976EFe8E+wrCPGY2dfd0HDXnooUO1Z2QNkoJu6Cy:U2fiQD0JI7/Fpunq7n4O1Zv6Euot
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

xtremerat evasion persistence rat spyware trojan upx

Malware Config

Signatures

Detect XtremeRAT payload 5 IoCs

resource	yara_rule
behavioral2/memory/2012-5-0x0000000010000000-0x000000001004B000-memory.dmp	family_xtremerat
behavioral2/memory/2012-6-0x0000000010000000-0x000000001004B000-memory.dmp	family_xtremerat
behavioral2/memory/3200-7-0x0000000010000000-0x000000001004B000-memory.dmp	family_xtremerat
behavioral2/memory/2012-8-0x0000000010000000-0x000000001004B000-memory.dmp	family_xtremerat
behavioral2/memory/3200-9-0x0000000010000000-0x000000001004B000-memory.dmp	family_xtremerat

UAC bypass 3 TTPs 1 IoCs

evasion trojan

Bypass User Account Control

T1548.002

Disable or Modify Tools

T1562.001

Modify Registry

T1112

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	00239af601ef4ac8dc6743e60f33d0cf_JaffaCakes118.exe

Windows security bypass 2 TTPs 1 IoCs

evasion trojan

Disable or Modify Tools

T1562.001

Modify Registry

T1112

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\UACDisableNotify = "0"	00239af601ef4ac8dc6743e60f33d0cf_JaffaCakes118.exe

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

UPX packed file 7 IoCs

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

upx

resource	yara_rule
behavioral2/memory/2012-2-0x0000000010000000-0x000000001004B000-memory.dmp	upx
behavioral2/memory/2012-4-0x0000000010000000-0x000000001004B000-memory.dmp	upx
behavioral2/memory/2012-5-0x0000000010000000-0x000000001004B000-memory.dmp	upx
behavioral2/memory/2012-6-0x0000000010000000-0x000000001004B000-memory.dmp	upx
behavioral2/memory/3200-7-0x0000000010000000-0x000000001004B000-memory.dmp	upx
behavioral2/memory/2012-8-0x0000000010000000-0x000000001004B000-memory.dmp	upx
behavioral2/memory/3200-9-0x0000000010000000-0x000000001004B000-memory.dmp	upx

Windows security modification 2 TTPs 1 IoCs

evasion trojan

Disable or Modify Tools

T1562.001

Modify Registry

T1112

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\UACDisableNotify = "0"	00239af601ef4ac8dc6743e60f33d0cf_JaffaCakes118.exe

Checks whether UAC is enabled 1 TTPs 1 IoCs

evasion trojan

System Information Discovery

T1082

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	00239af601ef4ac8dc6743e60f33d0cf_JaffaCakes118.exe

Maps connected drives based on registry 3 TTPs 2 IoCs

Disk information is often read in order to detect sandboxing environments.

Query Registry

T1012

Peripheral Device Discovery

T1120

System Information Discovery

T1082

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum	00239af601ef4ac8dc6743e60f33d0cf_JaffaCakes118.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\disk\Enum\0	00239af601ef4ac8dc6743e60f33d0cf_JaffaCakes118.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4548 set thread context of 2012	4548	00239af601ef4ac8dc6743e60f33d0cf_JaffaCakes118.exe	82

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
4568	3200	WerFault.exe	83
4144	3200	WerFault.exe	83

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeBackupPrivilege	4548	00239af601ef4ac8dc6743e60f33d0cf_JaffaCakes118.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4548	00239af601ef4ac8dc6743e60f33d0cf_JaffaCakes118.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 4548 wrote to memory of 2012	4548	00239af601ef4ac8dc6743e60f33d0cf_JaffaCakes118.exe	82
PID 4548 wrote to memory of 2012	4548	00239af601ef4ac8dc6743e60f33d0cf_JaffaCakes118.exe	82
PID 4548 wrote to memory of 2012	4548	00239af601ef4ac8dc6743e60f33d0cf_JaffaCakes118.exe	82
PID 4548 wrote to memory of 2012	4548	00239af601ef4ac8dc6743e60f33d0cf_JaffaCakes118.exe	82
PID 4548 wrote to memory of 2012	4548	00239af601ef4ac8dc6743e60f33d0cf_JaffaCakes118.exe	82
PID 4548 wrote to memory of 2012	4548	00239af601ef4ac8dc6743e60f33d0cf_JaffaCakes118.exe	82
PID 4548 wrote to memory of 2012	4548	00239af601ef4ac8dc6743e60f33d0cf_JaffaCakes118.exe	82
PID 4548 wrote to memory of 2012	4548	00239af601ef4ac8dc6743e60f33d0cf_JaffaCakes118.exe	82
PID 2012 wrote to memory of 3200	2012	00239af601ef4ac8dc6743e60f33d0cf_JaffaCakes118.exe	83
PID 2012 wrote to memory of 3200	2012	00239af601ef4ac8dc6743e60f33d0cf_JaffaCakes118.exe	83
PID 2012 wrote to memory of 3200	2012	00239af601ef4ac8dc6743e60f33d0cf_JaffaCakes118.exe	83
PID 2012 wrote to memory of 3200	2012	00239af601ef4ac8dc6743e60f33d0cf_JaffaCakes118.exe	83
PID 2012 wrote to memory of 3376	2012	00239af601ef4ac8dc6743e60f33d0cf_JaffaCakes118.exe	84
PID 2012 wrote to memory of 3376	2012	00239af601ef4ac8dc6743e60f33d0cf_JaffaCakes118.exe	84
PID 2012 wrote to memory of 3376	2012	00239af601ef4ac8dc6743e60f33d0cf_JaffaCakes118.exe	84

System policy modification 1 TTPs 1 IoCs

evasion

Modify Registry

T1112

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	00239af601ef4ac8dc6743e60f33d0cf_JaffaCakes118.exe

C:\Users\Admin\AppData\Local\Temp\00239af601ef4ac8dc6743e60f33d0cf_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\00239af601ef4ac8dc6743e60f33d0cf_JaffaCakes118.exe"
1⤵
- UAC bypass
- Windows security bypass
- Windows security modification
- Checks whether UAC is enabled
- Maps connected drives based on registry
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
- System policy modification
PID:4548
- C:\Users\Admin\AppData\Local\Temp\00239af601ef4ac8dc6743e60f33d0cf_JaffaCakes118.exe
  C:\Users\Admin\AppData\Local\Temp\00239af601ef4ac8dc6743e60f33d0cf_JaffaCakes118.exe
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2012
- - C:\Windows\SysWOW64\svchost.exe
    svchost.exe
    3⤵
    PID:3200
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 3200 -s 484
      4⤵
      Program crash
      PID:4568
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 3200 -s 492
      4⤵
      Program crash
      PID:4144
- - C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
    "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe"
    3⤵
    PID:3376