xtremerat | c81547b192e71dc1c4859368795cb687be1cc5a9e2f2c5137ee290cfb8d504fe

General

Target

c81547b192e71dc1c4859368795cb687be1cc5a9e2f2c5137ee290cfb8d504fe.exe
Size

205KB
MD5

5bd790f9ad826b59173a72498f9a96e5
SHA1

36a1e9bbc5774f96681740e8216923e0377d05be
SHA256

c81547b192e71dc1c4859368795cb687be1cc5a9e2f2c5137ee290cfb8d504fe
SHA512

f8a7eb6143e150a4483228043e363969bdadb3d1f47e34912ebebc898bbb007db35384c9a4472c8ab556b4428f8903b2f5bd6bc3eab627954d63236af85400b8
SSDEEP

3072:QZkRi4rZqDjiuHg76dGMGK/P833iO779p9cFe6Q1cdE0SI1PbHNRTG64IoX:QWRTmaW9GH33hXCeBuEObHNRTG64

Score

10^/10

xtremerat persistence rat spyware upx

Malware Config

Extracted

Family

xtremerat

C2

juliosouza.no-ip.org

Signatures

Detect XtremeRAT payload 5 IoCs

resource	yara_rule
behavioral1/memory/1108-55-0x0000000000C80000-0x0000000000CFA000-memory.dmp	family_xtremerat
behavioral1/memory/980-58-0x0000000000000000-mapping.dmp	family_xtremerat
behavioral1/memory/980-61-0x0000000000C80000-0x0000000000CFA000-memory.dmp	family_xtremerat
behavioral1/memory/1108-62-0x0000000000C80000-0x0000000000CFA000-memory.dmp	family_xtremerat
behavioral1/memory/980-63-0x0000000000C80000-0x0000000000CFA000-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

T1060

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\MACHINE\Software\Wow6432Node\Microsoft\Active Setup\Installed Components\{5460C4DF-B266-909E-CB58-E32B79832EB2}	c81547b192e71dc1c4859368795cb687be1cc5a9e2f2c5137ee290cfb8d504fe.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"	c81547b192e71dc1c4859368795cb687be1cc5a9e2f2c5137ee290cfb8d504fe.exe

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral1/memory/1108-55-0x0000000000C80000-0x0000000000CFA000-memory.dmp	upx
behavioral1/memory/980-61-0x0000000000C80000-0x0000000000CFA000-memory.dmp	upx
behavioral1/memory/1108-62-0x0000000000C80000-0x0000000000CFA000-memory.dmp	upx
behavioral1/memory/980-63-0x0000000000C80000-0x0000000000CFA000-memory.dmp	upx

Adds Run key to start application 2 TTPs 4 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\MACHINE\Software\Wow6432Node\Microsoft\Windows\CurrentVersion\Run	c81547b192e71dc1c4859368795cb687be1cc5a9e2f2c5137ee290cfb8d504fe.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\HKLM = "C:\\Windows\\InstallDir\\Server.exe"	c81547b192e71dc1c4859368795cb687be1cc5a9e2f2c5137ee290cfb8d504fe.exe
Key created	\REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run	c81547b192e71dc1c4859368795cb687be1cc5a9e2f2c5137ee290cfb8d504fe.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run\HKCU = "C:\\Windows\\InstallDir\\Server.exe"	c81547b192e71dc1c4859368795cb687be1cc5a9e2f2c5137ee290cfb8d504fe.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File opened for modification	C:\Windows\InstallDir\Server.exe	c81547b192e71dc1c4859368795cb687be1cc5a9e2f2c5137ee290cfb8d504fe.exe
File created	C:\Windows\InstallDir\Server.exe	c81547b192e71dc1c4859368795cb687be1cc5a9e2f2c5137ee290cfb8d504fe.exe

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

System Information Discovery
T1082

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
980	explorer.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 1108 wrote to memory of 904	1108	c81547b192e71dc1c4859368795cb687be1cc5a9e2f2c5137ee290cfb8d504fe.exe	27
PID 1108 wrote to memory of 904	1108	c81547b192e71dc1c4859368795cb687be1cc5a9e2f2c5137ee290cfb8d504fe.exe	27
PID 1108 wrote to memory of 904	1108	c81547b192e71dc1c4859368795cb687be1cc5a9e2f2c5137ee290cfb8d504fe.exe	27
PID 1108 wrote to memory of 904	1108	c81547b192e71dc1c4859368795cb687be1cc5a9e2f2c5137ee290cfb8d504fe.exe	27
PID 1108 wrote to memory of 980	1108	c81547b192e71dc1c4859368795cb687be1cc5a9e2f2c5137ee290cfb8d504fe.exe	28
PID 1108 wrote to memory of 980	1108	c81547b192e71dc1c4859368795cb687be1cc5a9e2f2c5137ee290cfb8d504fe.exe	28
PID 1108 wrote to memory of 980	1108	c81547b192e71dc1c4859368795cb687be1cc5a9e2f2c5137ee290cfb8d504fe.exe	28
PID 1108 wrote to memory of 980	1108	c81547b192e71dc1c4859368795cb687be1cc5a9e2f2c5137ee290cfb8d504fe.exe	28
PID 1108 wrote to memory of 980	1108	c81547b192e71dc1c4859368795cb687be1cc5a9e2f2c5137ee290cfb8d504fe.exe	28

C:\Users\Admin\AppData\Local\Temp\c81547b192e71dc1c4859368795cb687be1cc5a9e2f2c5137ee290cfb8d504fe.exe
"C:\Users\Admin\AppData\Local\Temp\c81547b192e71dc1c4859368795cb687be1cc5a9e2f2c5137ee290cfb8d504fe.exe"
1⤵
- Modifies Installed Components in the registry
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:1108
- C:\Program Files\Internet Explorer\iexplore.exe
  "C:\Program Files\Internet Explorer\iexplore.exe"
  2⤵
  PID:904
- C:\Windows\SysWOW64\explorer.exe
  explorer.exe
  2⤵
  - Suspicious use of SetWindowsHookEx
  PID:980

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

2

T1060

Privilege Escalation

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/980-56-0x0000000000C80000-0x0000000000CFA000-memory.dmp

Filesize
488KB

Download
memory/980-60-0x0000000074C41000-0x0000000074C43000-memory.dmp

Filesize
8KB

Download
memory/980-61-0x0000000000C80000-0x0000000000CFA000-memory.dmp

Filesize
488KB

Download
memory/980-63-0x0000000000C80000-0x0000000000CFA000-memory.dmp

Filesize
488KB

Download
memory/1108-54-0x0000000075B41000-0x0000000075B43000-memory.dmp

Filesize
8KB

Download
memory/1108-55-0x0000000000C80000-0x0000000000CFA000-memory.dmp

Filesize
488KB

Download
memory/1108-62-0x0000000000C80000-0x0000000000CFA000-memory.dmp

Filesize
488KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads