xtremerat | 4e833a9595653d4c0a799e912f3d1310f24415f964a4e81302dcca75027aa0b8

General

Target

fb7b3668db7296ff35e0b20bbd210ea6_JaffaCakes118.exe
Size

33KB
MD5

fb7b3668db7296ff35e0b20bbd210ea6
SHA1

25cf3c76a2bcd1907dee6da48facbdd28ccf2149
SHA256

4e833a9595653d4c0a799e912f3d1310f24415f964a4e81302dcca75027aa0b8
SHA512

d302c8d1bd9ab31f0df79be29e54eaf8eba153410773ece98127222484db479a599bb726a86836766372d7106d8a7db9a85fccbe1ac5869ebd6596139794fe6f
SSDEEP

768:2MuijtHf5g7/IIG3bGcYDBSvFIWuePQtv66lRtz76O8Lh:jNW71rcYDAWeotvXlXiO

Score

10^/10

xtremerat persistence rat spyware upx

Malware Config

Extracted

Family

xtremerat

C2

pho3nix.no-ip.biz

Signatures

Detect XtremeRAT payload 7 IoCs

Processes:

resource	yara_rule
behavioral2/memory/3044-1-0x0000000010000000-0x000000001004D000-memory.dmp	family_xtremerat
behavioral2/memory/1956-2-0x0000000010000000-0x000000001004D000-memory.dmp	family_xtremerat
behavioral2/memory/4352-3-0x0000000010000000-0x000000001004D000-memory.dmp	family_xtremerat
behavioral2/memory/3044-6-0x0000000010000000-0x000000001004D000-memory.dmp	family_xtremerat
behavioral2/memory/1956-7-0x0000000010000000-0x000000001004D000-memory.dmp	family_xtremerat
behavioral2/memory/1956-8-0x0000000010000000-0x000000001004D000-memory.dmp	family_xtremerat
behavioral2/memory/1956-9-0x0000000010000000-0x000000001004D000-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

Processes:

explorer.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\Software\WOW6432Node\Microsoft\Active Setup\Installed Components\{5460C4DF-B266-909E-CB58-E32B79832EB2}	explorer.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{5460C4DF-B266-909E-CB58-E32B79832EB2}\StubPath = "C:\\Windows\\system32\\assembly\\winrar.exe restart"	explorer.exe

Deletes itself 1 IoCs

Processes:

explorer.exe

pid process

1956 explorer.exe

pid	process
1956	explorer.exe

UPX packed file 8 IoCs

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

upx

Processes:

resource	yara_rule
behavioral2/memory/4352-0-0x0000000010000000-0x000000001004D000-memory.dmp	upx
behavioral2/memory/3044-1-0x0000000010000000-0x000000001004D000-memory.dmp	upx
behavioral2/memory/1956-2-0x0000000010000000-0x000000001004D000-memory.dmp	upx
behavioral2/memory/4352-3-0x0000000010000000-0x000000001004D000-memory.dmp	upx
behavioral2/memory/3044-6-0x0000000010000000-0x000000001004D000-memory.dmp	upx
behavioral2/memory/1956-7-0x0000000010000000-0x000000001004D000-memory.dmp	upx
behavioral2/memory/1956-8-0x0000000010000000-0x000000001004D000-memory.dmp	upx
behavioral2/memory/1956-9-0x0000000010000000-0x000000001004D000-memory.dmp	upx

Adds Run key to start application 2 TTPs 3 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

explorer.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\HKLM = "C:\\Windows\\system32\\assembly\\winrar.exe"	explorer.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-355664440-2199602304-1223909400-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\HKCU = "C:\\Windows\\system32\\assembly\\winrar.exe"	explorer.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-355664440-2199602304-1223909400-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\HKCU = "winrar 5"	explorer.exe

Drops file in System32 directory 3 IoCs

Processes:

explorer.exe

description	ioc	process
File opened for modification	C:\Windows\SysWOW64\assembly\winrar.exe	explorer.exe
File created	C:\Windows\SysWOW64\assembly\winrar.exe	explorer.exe
File opened for modification	C:\Windows\SysWOW64\assembly\	explorer.exe

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

System Information Discovery
T1082
Program crash 2 IoCs

Processes:

WerFault.exeWerFault.exe

pid pid_target process target process

4644 3044 WerFault.exe svchost.exe
3964 3044 WerFault.exe svchost.exe
Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

explorer.exe

pid process

1956 explorer.exe

pid	pid_target	process	target process
4644	3044	WerFault.exe	svchost.exe
3964	3044	WerFault.exe	svchost.exe

pid	process
1956	explorer.exe

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

fb7b3668db7296ff35e0b20bbd210ea6_JaffaCakes118.exe

description	pid	process	target process
PID 4352 wrote to memory of 3044	4352	fb7b3668db7296ff35e0b20bbd210ea6_JaffaCakes118.exe	svchost.exe
PID 4352 wrote to memory of 3044	4352	fb7b3668db7296ff35e0b20bbd210ea6_JaffaCakes118.exe	svchost.exe
PID 4352 wrote to memory of 3044	4352	fb7b3668db7296ff35e0b20bbd210ea6_JaffaCakes118.exe	svchost.exe
PID 4352 wrote to memory of 3044	4352	fb7b3668db7296ff35e0b20bbd210ea6_JaffaCakes118.exe	svchost.exe
PID 4352 wrote to memory of 1956	4352	fb7b3668db7296ff35e0b20bbd210ea6_JaffaCakes118.exe	explorer.exe
PID 4352 wrote to memory of 1956	4352	fb7b3668db7296ff35e0b20bbd210ea6_JaffaCakes118.exe	explorer.exe
PID 4352 wrote to memory of 1956	4352	fb7b3668db7296ff35e0b20bbd210ea6_JaffaCakes118.exe	explorer.exe
PID 4352 wrote to memory of 1956	4352	fb7b3668db7296ff35e0b20bbd210ea6_JaffaCakes118.exe	explorer.exe

C:\Users\Admin\AppData\Local\Temp\fb7b3668db7296ff35e0b20bbd210ea6_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\fb7b3668db7296ff35e0b20bbd210ea6_JaffaCakes118.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:4352

C:\Windows\SysWOW64\svchost.exe
svchost.exe
2⤵
PID:3044

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 3044 -s 480
3⤵
- Program crash
PID:4644

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 3044 -s 476
3⤵
- Program crash
PID:3964

C:\Windows\SysWOW64\explorer.exe
explorer.exe
2⤵
- Modifies Installed Components in the registry
- Deletes itself
- Adds Run key to start application
- Drops file in System32 directory
- Suspicious use of SetWindowsHookEx
PID:1956

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 3044 -ip 3044
1⤵
PID:2212

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 488 -p 3044 -ip 3044
1⤵
PID:1496

Network

MITRE ATT&CK Matrix ATT&CK v13

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

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

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Downloads

memory/1956-2-0x0000000010000000-0x000000001004D000-memory.dmp

Filesize
308KB

Download
memory/1956-7-0x0000000010000000-0x000000001004D000-memory.dmp

Filesize
308KB

Download
memory/1956-8-0x0000000010000000-0x000000001004D000-memory.dmp

Filesize
308KB

Download
memory/1956-9-0x0000000010000000-0x000000001004D000-memory.dmp

Filesize
308KB

Download
memory/3044-1-0x0000000010000000-0x000000001004D000-memory.dmp

Filesize
308KB

Download
memory/3044-6-0x0000000010000000-0x000000001004D000-memory.dmp

Filesize
308KB

Download
memory/4352-0-0x0000000010000000-0x000000001004D000-memory.dmp

Filesize
308KB

Download
memory/4352-3-0x0000000010000000-0x000000001004D000-memory.dmp

Filesize
308KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v13

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Downloads