xtremerat | a0830538e1da0efcbbe43ecbba0ea7397afb587e8d8eb50863b65402726aa7f6

General

Target
fb371836525989320d570ccb8d4a94c0_JaffaCakes118.exe
Size 315KB
Sample240419-1f183aha2v
SHA256 a0830538e1da0efcbbe43ecbba0ea7397afb587e8d8eb50863b65402726aa7f6
MD5 fb371836525989320d570ccb8d4a94c0
SHA1 162e47a7f9e6d1d0cf695c9f4be0536e4c904139
SHA512 1a44d864033e9b81082cc745590df6e40c111cde7eecc3df7ddca8ee5f203eaaa674ac4c2d3ceb6cffbc3405d692bf4bf32f1b632926b2028405fa300286102a
SSDEEP 6144:U1db49+rEg024fpLZazEjvE/rbay19tSt4bO2BaDmeBJe59utc2j18m7:UjkArEN249AyE/rbaMct4bO2/VfC18S
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

xtremerat persistence rat spyware upx

Malware Config

Extracted

Family

xtremerat

C2

hasn.no-ip.org

Signatures

Detect XtremeRAT payload 8 IoCs

resource	yara_rule
behavioral2/memory/1868-5-0x0000000010000000-0x000000001004D000-memory.dmp	family_xtremerat
behavioral2/memory/1868-6-0x0000000010000000-0x000000001004D000-memory.dmp	family_xtremerat
behavioral2/memory/1908-7-0x0000000010000000-0x000000001004D000-memory.dmp	family_xtremerat
behavioral2/memory/3452-8-0x0000000010000000-0x000000001004D000-memory.dmp	family_xtremerat
behavioral2/memory/1868-9-0x0000000010000000-0x000000001004D000-memory.dmp	family_xtremerat
behavioral2/memory/3452-12-0x0000000010000000-0x000000001004D000-memory.dmp	family_xtremerat
behavioral2/memory/1908-13-0x0000000010000000-0x000000001004D000-memory.dmp	family_xtremerat
behavioral2/memory/3452-14-0x0000000010000000-0x000000001004D000-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
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{35V344L7-T1G3-0G70-717K-5JOTX8D60C7T}\StubPath = "C:\\Windows\\system32\\system32\\system.exe restart"	explorer.exe
Key created	\REGISTRY\MACHINE\Software\WOW6432Node\Microsoft\Active Setup\Installed Components\{35V344L7-T1G3-0G70-717K-5JOTX8D60C7T}	explorer.exe

UPX packed file 12 IoCs

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

upx

resource	yara_rule
behavioral2/memory/1796-0-0x0000000000400000-0x00000000004B6000-memory.dmp	upx
behavioral2/memory/1868-1-0x0000000010000000-0x000000001004D000-memory.dmp	upx
behavioral2/memory/1796-3-0x0000000000400000-0x00000000004B6000-memory.dmp	upx
behavioral2/memory/1868-4-0x0000000010000000-0x000000001004D000-memory.dmp	upx
behavioral2/memory/1868-5-0x0000000010000000-0x000000001004D000-memory.dmp	upx
behavioral2/memory/1868-6-0x0000000010000000-0x000000001004D000-memory.dmp	upx
behavioral2/memory/1908-7-0x0000000010000000-0x000000001004D000-memory.dmp	upx
behavioral2/memory/3452-8-0x0000000010000000-0x000000001004D000-memory.dmp	upx
behavioral2/memory/1868-9-0x0000000010000000-0x000000001004D000-memory.dmp	upx
behavioral2/memory/3452-12-0x0000000010000000-0x000000001004D000-memory.dmp	upx
behavioral2/memory/1908-13-0x0000000010000000-0x000000001004D000-memory.dmp	upx
behavioral2/memory/3452-14-0x0000000010000000-0x000000001004D000-memory.dmp	upx

Adds Run key to start application 2 TTPs 3 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-2288054676-1871194608-3559553667-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\explorer = "C:\\Windows\\system32\\system32\\system.exe"	explorer.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\explorer = "C:\\Windows\\system32\\system32\\system.exe"	explorer.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2288054676-1871194608-3559553667-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\system = "C:\\Windows\\system32\\system32\\system.exe"	explorer.exe

AutoIT Executable 1 IoCs

AutoIT scripts compiled to PE executables.

resource	yara_rule
behavioral2/memory/1796-3-0x0000000000400000-0x00000000004B6000-memory.dmp	autoit_exe

Drops file in System32 directory 3 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\system32\system.exe	explorer.exe
File opened for modification	C:\Windows\SysWOW64\system32\	explorer.exe
File opened for modification	C:\Windows\SysWOW64\system32\system.exe	explorer.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1796 set thread context of 1868	1796	fb371836525989320d570ccb8d4a94c0_JaffaCakes118.exe	86

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
4780	1908	WerFault.exe	87
4956	1908	WerFault.exe	87

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
3452	explorer.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 1796 wrote to memory of 1868	1796	fb371836525989320d570ccb8d4a94c0_JaffaCakes118.exe	86
PID 1796 wrote to memory of 1868	1796	fb371836525989320d570ccb8d4a94c0_JaffaCakes118.exe	86
PID 1796 wrote to memory of 1868	1796	fb371836525989320d570ccb8d4a94c0_JaffaCakes118.exe	86
PID 1796 wrote to memory of 1868	1796	fb371836525989320d570ccb8d4a94c0_JaffaCakes118.exe	86
PID 1796 wrote to memory of 1868	1796	fb371836525989320d570ccb8d4a94c0_JaffaCakes118.exe	86
PID 1796 wrote to memory of 1868	1796	fb371836525989320d570ccb8d4a94c0_JaffaCakes118.exe	86
PID 1796 wrote to memory of 1868	1796	fb371836525989320d570ccb8d4a94c0_JaffaCakes118.exe	86
PID 1868 wrote to memory of 1908	1868	fb371836525989320d570ccb8d4a94c0_JaffaCakes118.exe	87
PID 1868 wrote to memory of 1908	1868	fb371836525989320d570ccb8d4a94c0_JaffaCakes118.exe	87
PID 1868 wrote to memory of 1908	1868	fb371836525989320d570ccb8d4a94c0_JaffaCakes118.exe	87
PID 1868 wrote to memory of 1908	1868	fb371836525989320d570ccb8d4a94c0_JaffaCakes118.exe	87
PID 1868 wrote to memory of 3452	1868	fb371836525989320d570ccb8d4a94c0_JaffaCakes118.exe	88
PID 1868 wrote to memory of 3452	1868	fb371836525989320d570ccb8d4a94c0_JaffaCakes118.exe	88
PID 1868 wrote to memory of 3452	1868	fb371836525989320d570ccb8d4a94c0_JaffaCakes118.exe	88
PID 1868 wrote to memory of 3452	1868	fb371836525989320d570ccb8d4a94c0_JaffaCakes118.exe	88

C:\Users\Admin\AppData\Local\Temp\fb371836525989320d570ccb8d4a94c0_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\fb371836525989320d570ccb8d4a94c0_JaffaCakes118.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1796
- C:\Users\Admin\AppData\Local\Temp\fb371836525989320d570ccb8d4a94c0_JaffaCakes118.exe
  "C:\Users\Admin\AppData\Local\Temp\fb371836525989320d570ccb8d4a94c0_JaffaCakes118.exe"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1868
- - C:\Windows\SysWOW64\svchost.exe
    svchost.exe
    3⤵
    PID:1908
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 1908 -s 480
      4⤵
      Program crash
      PID:4780
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 1908 -s 488
      4⤵
      Program crash
      PID:4956
- - C:\Windows\SysWOW64\explorer.exe
    explorer.exe
    3⤵
    - Modifies Installed Components in the registry
    - Adds Run key to start application
    - Drops file in System32 directory
    - Suspicious use of SetWindowsHookEx
    PID:3452

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 404 -p 1908 -ip 1908
1⤵
PID:3356

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 512 -p 1908 -ip 1908
1⤵
PID:4464

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/1796-0-0x0000000000400000-0x00000000004B6000-memory.dmp

Download

memory/1796-3-0x0000000000400000-0x00000000004B6000-memory.dmp

Download

memory/1868-1-0x0000000010000000-0x000000001004D000-memory.dmp

Download

memory/1868-4-0x0000000010000000-0x000000001004D000-memory.dmp

Download

memory/1868-5-0x0000000010000000-0x000000001004D000-memory.dmp

Download

memory/1868-6-0x0000000010000000-0x000000001004D000-memory.dmp

Download

memory/1868-9-0x0000000010000000-0x000000001004D000-memory.dmp

Download

memory/1908-7-0x0000000010000000-0x000000001004D000-memory.dmp

Download

memory/1908-13-0x0000000010000000-0x000000001004D000-memory.dmp

Download

memory/3452-8-0x0000000010000000-0x000000001004D000-memory.dmp

Download

memory/3452-12-0x0000000010000000-0x000000001004D000-memory.dmp

Download

memory/3452-14-0x0000000010000000-0x000000001004D000-memory.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads