xtremerat | 70fa93d647afbc8e30ef009220cf9050d81f22f9464b6c3ff042073a74b2130a

General

Target
9cc4193546dccadf9c7f8218960b7817.exe
Size 77KB
Sample240215-dda8jafe75
SHA256 70fa93d647afbc8e30ef009220cf9050d81f22f9464b6c3ff042073a74b2130a
MD5 9cc4193546dccadf9c7f8218960b7817
SHA1 43e86fb074cdd4257353ee68773dbd3e10e3fd13
SHA512 eb3a0b967f609f8816767a328dc70ae3069f78611e2766f96d48369c60ce38f0bea2cf951b856c046ace271eecf0d914e70d69d02766ff1cb6aa5d1c21c44834
SSDEEP 1536:hbN4a7cSP6eyH7sdkOfiKYbM3FcdCFB4lStRoR/Nor:pN4a7+zsdkOfIbM3Fd4YoRlor
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

xtremerat persistence rat spyware upx

Malware Config

Extracted

Family

xtremerat

C2

wer99.no-ip.org

Signatures

Detect XtremeRAT payload 11 IoCs

resource	yara_rule
behavioral2/memory/392-4-0x0000000010000000-0x000000001004A000-memory.dmp	family_xtremerat
behavioral2/memory/392-3-0x0000000010000000-0x000000001004A000-memory.dmp	family_xtremerat
behavioral2/memory/392-6-0x0000000010000000-0x000000001004A000-memory.dmp	family_xtremerat
behavioral2/memory/392-7-0x0000000010000000-0x000000001004A000-memory.dmp	family_xtremerat
behavioral2/memory/3268-8-0x0000000010000000-0x000000001004A000-memory.dmp	family_xtremerat
behavioral2/memory/4292-9-0x0000000010000000-0x000000001004A000-memory.dmp	family_xtremerat
behavioral2/memory/392-10-0x0000000010000000-0x000000001004A000-memory.dmp	family_xtremerat
behavioral2/memory/4292-13-0x0000000010000000-0x000000001004A000-memory.dmp	family_xtremerat
behavioral2/memory/4292-14-0x0000000010000000-0x000000001004A000-memory.dmp	family_xtremerat
behavioral2/memory/3268-15-0x0000000010000000-0x000000001004A000-memory.dmp	family_xtremerat
behavioral2/memory/4292-16-0x0000000010000000-0x000000001004A000-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

Modifies Installed Components in the registry 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\MACHINE\Software\WOW6432Node\Microsoft\Active Setup\Installed Components\{5460C4DF-B266-909E-CB58-E32B79832EB2}	calc.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{5460C4DF-B266-909E-CB58-E32B79832EB2}\StubPath = "C:\\Program Files (x86)\\InstallDir\\Server.exe restart"	calc.exe

UPX packed file 2 IoCs

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

upx

resource	yara_rule
behavioral2/memory/1712-0-0x0000000000400000-0x000000000044D000-memory.dmp	upx
behavioral2/memory/1712-5-0x0000000000400000-0x000000000044D000-memory.dmp	upx

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:\\Program Files (x86)\\InstallDir\\Server.exe"	calc.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1168293393-3419776239-306423207-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\HKCU = "C:\\Program Files (x86)\\InstallDir\\Server.exe"	calc.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1712 set thread context of 392	1712	9cc4193546dccadf9c7f8218960b7817.exe	85

Drops file in Program Files directory 3 IoCs

description	ioc	Process
File opened for modification	C:\Program Files (x86)\InstallDir\Server.exe	calc.exe
File created	C:\Program Files (x86)\InstallDir\Server.exe	calc.exe
File opened for modification	C:\Program Files (x86)\InstallDir\	calc.exe

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

System Information Discovery
T1082

Program crash 4 IoCs

pid	pid_target	Process	procid_target
1936	3268	WerFault.exe	86
2092	3268	WerFault.exe	86
2220	4292	WerFault.exe	87
212	4292	WerFault.exe	87

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
1712	9cc4193546dccadf9c7f8218960b7817.exe
4292	calc.exe

Suspicious use of WriteProcessMemory 21 IoCs

description	pid	Process	procid_target
PID 1712 wrote to memory of 392	1712	9cc4193546dccadf9c7f8218960b7817.exe	85
PID 1712 wrote to memory of 392	1712	9cc4193546dccadf9c7f8218960b7817.exe	85
PID 1712 wrote to memory of 392	1712	9cc4193546dccadf9c7f8218960b7817.exe	85
PID 1712 wrote to memory of 392	1712	9cc4193546dccadf9c7f8218960b7817.exe	85
PID 1712 wrote to memory of 392	1712	9cc4193546dccadf9c7f8218960b7817.exe	85
PID 1712 wrote to memory of 392	1712	9cc4193546dccadf9c7f8218960b7817.exe	85
PID 1712 wrote to memory of 392	1712	9cc4193546dccadf9c7f8218960b7817.exe	85
PID 1712 wrote to memory of 392	1712	9cc4193546dccadf9c7f8218960b7817.exe	85
PID 1712 wrote to memory of 392	1712	9cc4193546dccadf9c7f8218960b7817.exe	85
PID 1712 wrote to memory of 392	1712	9cc4193546dccadf9c7f8218960b7817.exe	85
PID 1712 wrote to memory of 392	1712	9cc4193546dccadf9c7f8218960b7817.exe	85
PID 1712 wrote to memory of 392	1712	9cc4193546dccadf9c7f8218960b7817.exe	85
PID 1712 wrote to memory of 392	1712	9cc4193546dccadf9c7f8218960b7817.exe	85
PID 392 wrote to memory of 3268	392	9cc4193546dccadf9c7f8218960b7817.exe	86
PID 392 wrote to memory of 3268	392	9cc4193546dccadf9c7f8218960b7817.exe	86
PID 392 wrote to memory of 3268	392	9cc4193546dccadf9c7f8218960b7817.exe	86
PID 392 wrote to memory of 3268	392	9cc4193546dccadf9c7f8218960b7817.exe	86
PID 392 wrote to memory of 4292	392	9cc4193546dccadf9c7f8218960b7817.exe	87
PID 392 wrote to memory of 4292	392	9cc4193546dccadf9c7f8218960b7817.exe	87
PID 392 wrote to memory of 4292	392	9cc4193546dccadf9c7f8218960b7817.exe	87
PID 392 wrote to memory of 4292	392	9cc4193546dccadf9c7f8218960b7817.exe	87

C:\Users\Admin\AppData\Local\Temp\9cc4193546dccadf9c7f8218960b7817.exe
"C:\Users\Admin\AppData\Local\Temp\9cc4193546dccadf9c7f8218960b7817.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1712
- C:\Users\Admin\AppData\Local\Temp\9cc4193546dccadf9c7f8218960b7817.exe
  "C:\Users\Admin\AppData\Local\Temp\9cc4193546dccadf9c7f8218960b7817.exe"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:392
- - C:\Windows\SysWOW64\svchost.exe
    svchost.exe
    3⤵
    PID:3268
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 3268 -s 480
      4⤵
      Program crash
      PID:1936
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 3268 -s 504
      4⤵
      Program crash
      PID:2092
- - C:\Windows\SysWOW64\calc.exe
    calc.exe
    3⤵
    - Modifies Installed Components in the registry
    - Adds Run key to start application
    - Drops file in Program Files directory
    - Suspicious use of SetWindowsHookEx
    PID:4292
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 4292 -s 984
      4⤵
      Program crash
      PID:2220
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 4292 -s 992
      4⤵
      Program crash
      PID:212

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 420 -p 3268 -ip 3268
1⤵
PID:1740

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 520 -p 3268 -ip 3268
1⤵
PID:2468

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 448 -p 4292 -ip 4292
1⤵
PID:3380

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 416 -p 4292 -ip 4292
1⤵
PID:2788

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

2

T1547

Registry Run Keys / Startup Folder

2

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

2

T1547

Registry Run Keys / Startup Folder

2

T1547.001

Defense Evasion

Modify Registry

2

T1112

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

memory/392-10-0x0000000010000000-0x000000001004A000-memory.dmp

Download

memory/392-4-0x0000000010000000-0x000000001004A000-memory.dmp

Download

memory/392-3-0x0000000010000000-0x000000001004A000-memory.dmp

Download

memory/392-6-0x0000000010000000-0x000000001004A000-memory.dmp

Download

memory/392-7-0x0000000010000000-0x000000001004A000-memory.dmp

Download

memory/1712-5-0x0000000000400000-0x000000000044D000-memory.dmp

Download

memory/1712-0-0x0000000000400000-0x000000000044D000-memory.dmp

Download

memory/3268-8-0x0000000010000000-0x000000001004A000-memory.dmp

Download

memory/3268-15-0x0000000010000000-0x000000001004A000-memory.dmp

Download

memory/4292-9-0x0000000010000000-0x000000001004A000-memory.dmp

Download

memory/4292-13-0x0000000010000000-0x000000001004A000-memory.dmp

Download

memory/4292-14-0x0000000010000000-0x000000001004A000-memory.dmp

Download

memory/4292-16-0x0000000010000000-0x000000001004A000-memory.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads