xtremerat | e9ff022725f4965cba7159244192030ff0e411c0888e40d14f67c11a218f70b9

General

Target
c4065a02ab5c8e8c3266dd7a35806cc6.exe
Size 61KB
Sample240312-wtxqkshg98
SHA256 e9ff022725f4965cba7159244192030ff0e411c0888e40d14f67c11a218f70b9
MD5 c4065a02ab5c8e8c3266dd7a35806cc6
SHA1 b1b82be725a93b767765de69a297f1279159466c
SHA512 27993d492cad23efad30bc4871f221d77094f4729f296b67ba492ca60a1b1b0b25f8d11e6f7a4055f1a6b761052ffb2dcc11b1f7e87aec8a67a5ec6a3972b282
SSDEEP 1536:mSRZnN+pny3iFSWbkgZH9vyS+O4INS0BtdY3KNi:mSR+ycbnt31S0nji
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

Malware Config

Signatures

Detect XtremeRAT payload 7 IoCs

resource	yara_rule
behavioral2/memory/4512-9-0x0000000010000000-0x000000001004D000-memory.dmp	family_xtremerat
behavioral2/memory/4428-11-0x0000000010000000-0x000000001004D000-memory.dmp	family_xtremerat
behavioral2/memory/1908-15-0x0000000010000000-0x000000001004D000-memory.dmp	family_xtremerat
behavioral2/memory/1908-14-0x0000000010000000-0x000000001004D000-memory.dmp	family_xtremerat
behavioral2/memory/4512-19-0x0000000010000000-0x000000001004D000-memory.dmp	family_xtremerat
behavioral2/memory/1908-16-0x0000000010000000-0x000000001004D000-memory.dmp	family_xtremerat
behavioral2/memory/1908-10-0x0000000010000000-0x000000001004D000-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

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\{4JS7M4M0-WO13-CYDT-LITD-2ITF43270MAY}	svchost.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{4JS7M4M0-WO13-CYDT-LITD-2ITF43270MAY}\StubPath = "C:\\Windows\\system32\\InstallDir\\Server.exe restart"	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
4428	tmp.exe

UPX packed file 9 IoCs

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

upx

resource	yara_rule
behavioral2/memory/4428-8-0x0000000010000000-0x000000001004D000-memory.dmp	upx
behavioral2/files/0x0007000000023221-7.dat	upx
behavioral2/memory/4512-9-0x0000000010000000-0x000000001004D000-memory.dmp	upx
behavioral2/memory/4428-11-0x0000000010000000-0x000000001004D000-memory.dmp	upx
behavioral2/memory/1908-15-0x0000000010000000-0x000000001004D000-memory.dmp	upx
behavioral2/memory/1908-14-0x0000000010000000-0x000000001004D000-memory.dmp	upx
behavioral2/memory/4512-19-0x0000000010000000-0x000000001004D000-memory.dmp	upx
behavioral2/memory/1908-16-0x0000000010000000-0x000000001004D000-memory.dmp	upx
behavioral2/memory/1908-10-0x0000000010000000-0x000000001004D000-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:\\Windows\\system32\\InstallDir\\Server.exe"	svchost.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-513485977-2495024337-1260977654-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\HKCU = "C:\\Windows\\system32\\InstallDir\\Server.exe"	svchost.exe

Drops file in System32 directory 3 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\InstallDir\Server.exe	svchost.exe
File created	C:\Windows\SysWOW64\InstallDir\Server.exe	svchost.exe
File opened for modification	C:\Windows\SysWOW64\InstallDir\	svchost.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
2660	1908	WerFault.exe	95
4624	4512	WerFault.exe	94
460	4512	WerFault.exe	94
1788	1908	WerFault.exe	95

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
3756	c4065a02ab5c8e8c3266dd7a35806cc6.exe
1908	svchost.exe

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 3756 wrote to memory of 4428	3756	c4065a02ab5c8e8c3266dd7a35806cc6.exe	92
PID 3756 wrote to memory of 4428	3756	c4065a02ab5c8e8c3266dd7a35806cc6.exe	92
PID 3756 wrote to memory of 4428	3756	c4065a02ab5c8e8c3266dd7a35806cc6.exe	92
PID 4428 wrote to memory of 4512	4428	tmp.exe	94
PID 4428 wrote to memory of 4512	4428	tmp.exe	94
PID 4428 wrote to memory of 4512	4428	tmp.exe	94
PID 4428 wrote to memory of 4512	4428	tmp.exe	94
PID 4428 wrote to memory of 1908	4428	tmp.exe	95
PID 4428 wrote to memory of 1908	4428	tmp.exe	95
PID 4428 wrote to memory of 1908	4428	tmp.exe	95
PID 4428 wrote to memory of 1908	4428	tmp.exe	95

C:\Users\Admin\AppData\Local\Temp\c4065a02ab5c8e8c3266dd7a35806cc6.exe
"C:\Users\Admin\AppData\Local\Temp\c4065a02ab5c8e8c3266dd7a35806cc6.exe"
1⤵
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3756
- C:\Users\Admin\AppData\Local\Temp\tmp.exe
  C:\Users\Admin\AppData\Local\Temp\tmp.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of WriteProcessMemory
  PID:4428
- - C:\Windows\SysWOW64\svchost.exe
    svchost.exe
    3⤵
    PID:4512
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 4512 -s 472
      4⤵
      Program crash
      PID:4624
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 4512 -s 488
      4⤵
      Program crash
      PID:460
- - C:\Windows\SysWOW64\svchost.exe
    svchost.exe
    3⤵
    - Modifies Installed Components in the registry
    - Adds Run key to start application
    - Drops file in System32 directory
    - Suspicious use of SetWindowsHookEx
    PID:1908
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 1908 -s 972
      4⤵
      Program crash
      PID:2660
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 1908 -s 980
      4⤵
      Program crash
      PID:1788

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 412 -p 4512 -ip 4512
1⤵
PID:5000

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 360 -p 1908 -ip 1908
1⤵
PID:2804

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 552 -p 1908 -ip 1908
1⤵
PID:716

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 576 -p 4512 -ip 4512
1⤵
PID:2852

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

tmp.exe

Path C:\Users\Admin\AppData\Local\Temp\tmp.exe
Size 33KB
SHA256 5ca2bf49500586b93a4b8aba6b3b9718926fb81bb8eaf15cf7f1d5834f524582
MD5 101210647ae58a62e5498e2d6a932e42
SHA1 dc015240b51062c6efa5981d71e1c42c4d715641
SHA512 065459acaab640a8a37b88d043cbff34e810e88fd69eb1744de11fa2f70d418cc2a3a76b7941b5fd28c202f09bea8afe252f3d5ebe9ac8ece97e86b6518983f9
SSDEEP 768:xMuijtHf5g7/IIG3bGcYDBSvFIWuePQtv66llYdCcBL:aNW71rcYDAWeotvXlaB
MD5 SHA1 SHA512 SSDEEP

Submit Download

memory/1908-15-0x0000000010000000-0x000000001004D000-memory.dmp

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memory/1908-14-0x0000000010000000-0x000000001004D000-memory.dmp

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memory/1908-16-0x0000000010000000-0x000000001004D000-memory.dmp

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memory/1908-10-0x0000000010000000-0x000000001004D000-memory.dmp

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memory/4428-8-0x0000000010000000-0x000000001004D000-memory.dmp

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memory/4428-11-0x0000000010000000-0x000000001004D000-memory.dmp

Download

memory/4512-9-0x0000000010000000-0x000000001004D000-memory.dmp

Download

memory/4512-19-0x0000000010000000-0x000000001004D000-memory.dmp

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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