xtremerat | 11d65a7a0e543e9527e7688ff496d61a7e2555f0834e3082242dbe225faf3601

General

Target
d33953ea8d2af6819b324e7681cb798d.exe
Size 360KB
Sample240318-l3e7saea76
SHA256 11d65a7a0e543e9527e7688ff496d61a7e2555f0834e3082242dbe225faf3601
MD5 d33953ea8d2af6819b324e7681cb798d
SHA1 08b43e82a6d009e87c61decf240fc1f1ffb14bb9
SHA512 63619d6a3464c9b8c8c982f0a7fb30f13cd606ac0c15618faba89c0b3a31dae071928eb73f25e1dece7ca8867dace1b02b17527dbd0ae0096138c7f39763013d
SSDEEP 6144:f78yrXpCydsi3YSqfcgxnPlYUJFZJ4BRG7xuqFqOQGYHufaVZBBjdCuW/2dLHuMa:fB8Gsi3Uf3dGUJCfUfFloxBjPWud
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

xtremerat persistence rat spyware

Malware Config

Extracted

Family

xtremerat

C2

wer99.no-ip.org

Signatures

Detect XtremeRAT payload 9 IoCs

resource	yara_rule
behavioral2/memory/3392-4-0x0000000010000000-0x000000001004A000-memory.dmp	family_xtremerat
behavioral2/memory/3392-5-0x0000000010000000-0x000000001004A000-memory.dmp	family_xtremerat
behavioral2/memory/3392-7-0x0000000010000000-0x000000001004A000-memory.dmp	family_xtremerat
behavioral2/memory/3392-9-0x0000000010000000-0x000000001004A000-memory.dmp	family_xtremerat
behavioral2/memory/1384-10-0x0000000010000000-0x000000001004A000-memory.dmp	family_xtremerat
behavioral2/memory/3392-13-0x0000000010000000-0x000000001004A000-memory.dmp	family_xtremerat
behavioral2/memory/3392-14-0x0000000010000000-0x000000001004A000-memory.dmp	family_xtremerat
behavioral2/memory/1384-15-0x0000000010000000-0x000000001004A000-memory.dmp	family_xtremerat
behavioral2/memory/3392-16-0x0000000010000000-0x000000001004A000-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
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{D272T3CC-8BGE-IQQN-X2AN-T2J13JI3TPH1}\StubPath = "C:\\Program Files (x86)\\InstallDir\\Server.exe restart"	d33953ea8d2af6819b324e7681cb798d.EXE
Key created	\REGISTRY\MACHINE\Software\WOW6432Node\Microsoft\Active Setup\Installed Components\{D272T3CC-8BGE-IQQN-X2AN-T2J13JI3TPH1}	d33953ea8d2af6819b324e7681cb798d.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:\\Program Files (x86)\\InstallDir\\Server.exe"	d33953ea8d2af6819b324e7681cb798d.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-557049126-2506969350-2798870634-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\HKCU = "C:\\Program Files (x86)\\InstallDir\\Server.exe"	d33953ea8d2af6819b324e7681cb798d.EXE

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4596 set thread context of 3392	4596	d33953ea8d2af6819b324e7681cb798d.exe	90

Drops file in Program Files directory 3 IoCs

description	ioc	Process
File opened for modification	C:\Program Files (x86)\InstallDir\	d33953ea8d2af6819b324e7681cb798d.EXE
File opened for modification	C:\Program Files (x86)\InstallDir\Server.exe	d33953ea8d2af6819b324e7681cb798d.EXE
File created	C:\Program Files (x86)\InstallDir\Server.exe	d33953ea8d2af6819b324e7681cb798d.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
4760	1384	WerFault.exe	91
3508	1384	WerFault.exe	91

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
4596	d33953ea8d2af6819b324e7681cb798d.exe
3392	d33953ea8d2af6819b324e7681cb798d.EXE

Suspicious use of WriteProcessMemory 17 IoCs

description	pid	Process	procid_target
PID 4596 wrote to memory of 3392	4596	d33953ea8d2af6819b324e7681cb798d.exe	90
PID 4596 wrote to memory of 3392	4596	d33953ea8d2af6819b324e7681cb798d.exe	90
PID 4596 wrote to memory of 3392	4596	d33953ea8d2af6819b324e7681cb798d.exe	90
PID 4596 wrote to memory of 3392	4596	d33953ea8d2af6819b324e7681cb798d.exe	90
PID 4596 wrote to memory of 3392	4596	d33953ea8d2af6819b324e7681cb798d.exe	90
PID 4596 wrote to memory of 3392	4596	d33953ea8d2af6819b324e7681cb798d.exe	90
PID 4596 wrote to memory of 3392	4596	d33953ea8d2af6819b324e7681cb798d.exe	90
PID 4596 wrote to memory of 3392	4596	d33953ea8d2af6819b324e7681cb798d.exe	90
PID 4596 wrote to memory of 3392	4596	d33953ea8d2af6819b324e7681cb798d.exe	90
PID 4596 wrote to memory of 3392	4596	d33953ea8d2af6819b324e7681cb798d.exe	90
PID 4596 wrote to memory of 3392	4596	d33953ea8d2af6819b324e7681cb798d.exe	90
PID 4596 wrote to memory of 3392	4596	d33953ea8d2af6819b324e7681cb798d.exe	90
PID 4596 wrote to memory of 3392	4596	d33953ea8d2af6819b324e7681cb798d.exe	90
PID 3392 wrote to memory of 1384	3392	d33953ea8d2af6819b324e7681cb798d.EXE	91
PID 3392 wrote to memory of 1384	3392	d33953ea8d2af6819b324e7681cb798d.EXE	91
PID 3392 wrote to memory of 1384	3392	d33953ea8d2af6819b324e7681cb798d.EXE	91
PID 3392 wrote to memory of 1384	3392	d33953ea8d2af6819b324e7681cb798d.EXE	91

C:\Users\Admin\AppData\Local\Temp\d33953ea8d2af6819b324e7681cb798d.exe
"C:\Users\Admin\AppData\Local\Temp\d33953ea8d2af6819b324e7681cb798d.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4596
- C:\Users\Admin\AppData\Local\Temp\d33953ea8d2af6819b324e7681cb798d.EXE
  "C:\Users\Admin\AppData\Local\Temp\d33953ea8d2af6819b324e7681cb798d.EXE"
  2⤵
  - Modifies Installed Components in the registry
  - Adds Run key to start application
  - Drops file in Program Files directory
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:3392
- - C:\Windows\SysWOW64\svchost.exe
    svchost.exe
    3⤵
    PID:1384
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 1384 -s 480
      4⤵
      Program crash
      PID:4760
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 1384 -s 488
      4⤵
      Program crash
      PID:3508

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 424 -p 1384 -ip 1384
1⤵
PID:3940

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 1384 -ip 1384
1⤵
PID:1636

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

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Downloads

memory/1384-10-0x0000000010000000-0x000000001004A000-memory.dmp

Download

memory/1384-15-0x0000000010000000-0x000000001004A000-memory.dmp

Download

memory/3392-7-0x0000000010000000-0x000000001004A000-memory.dmp

Download

memory/3392-5-0x0000000010000000-0x000000001004A000-memory.dmp

Download

memory/3392-9-0x0000000010000000-0x000000001004A000-memory.dmp

Download

memory/3392-4-0x0000000010000000-0x000000001004A000-memory.dmp

Download

memory/3392-13-0x0000000010000000-0x000000001004A000-memory.dmp

Download

memory/3392-14-0x0000000010000000-0x000000001004A000-memory.dmp

Download

memory/3392-16-0x0000000010000000-0x000000001004A000-memory.dmp

Download

memory/4596-6-0x0000000000400000-0x00000000004AD000-memory.dmp

Download

memory/4596-8-0x00000000001C0000-0x00000000001C3000-memory.dmp

Download

memory/4596-0-0x0000000000400000-0x00000000004AD000-memory.dmp

Download

memory/4596-1-0x00000000001C0000-0x00000000001C3000-memory.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads