xtremerat | 3c75446458d631359d19de18c09dfcbc5a616dc0c5d50f0df48d5fb818b8320d

General

Target

3c75446458d631359d19de18c09dfcbc5a616dc0c5d50f0df48d5fb818b8320d.exe
Size

301KB
MD5

12df8cfc8d44bbb69eabbc577fc15615
SHA1

5fc4df3b08a0d1e334f9a65400c2ba1d1c4e43ff
SHA256

3c75446458d631359d19de18c09dfcbc5a616dc0c5d50f0df48d5fb818b8320d
SHA512

b460945da31ea86c53e08e8dc24b49dbda16505731a18d13cf931b16b2b954a98f50e6b1e978d9c1d58ec9c1a81778497992c4b58210eed5a0d6e60f9db1a267
SSDEEP

768:b8m1Sq4NQErBsH1tzoisBKQI6dObAG/dq8uW29Ifnca/yyR+P2ujfGiia2gXYX1e:Tsq+QV4rObAdXWpf/y+Wukcox

Score

10^/10

xtremerat persistence rat spyware upx

Malware Config

Extracted

Family

xtremerat

C2

trojan99.ddns.net

ǒSettingtrojan99.ddns.net

Signatures

Detect XtremeRAT payload 4 IoCs

Processes:

resource	yara_rule
behavioral2/memory/1404-0-0x0000000010000000-0x000000001004D000-memory.dmp	family_xtremerat
behavioral2/memory/468-1-0x0000000010000000-0x000000001004D000-memory.dmp	family_xtremerat
behavioral2/memory/468-4-0x0000000010000000-0x000000001004D000-memory.dmp	family_xtremerat
behavioral2/memory/1404-5-0x0000000010000000-0x000000001004D000-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

UPX dump on OEP (original entry point) 4 IoCs

Processes:

resource	yara_rule
behavioral2/memory/1404-0-0x0000000010000000-0x000000001004D000-memory.dmp	UPX
behavioral2/memory/468-1-0x0000000010000000-0x000000001004D000-memory.dmp	UPX
behavioral2/memory/468-4-0x0000000010000000-0x000000001004D000-memory.dmp	UPX
behavioral2/memory/1404-5-0x0000000010000000-0x000000001004D000-memory.dmp	UPX

Modifies Installed Components in the registry 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

3c75446458d631359d19de18c09dfcbc5a616dc0c5d50f0df48d5fb818b8320d.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{5460C4DF-B266-909E-CB58-E32B79832EB2}\StubPath = "C:\\Windows\\system32\\InstallDir\\svchost.exe restart"	3c75446458d631359d19de18c09dfcbc5a616dc0c5d50f0df48d5fb818b8320d.exe
Key created	\REGISTRY\MACHINE\Software\WOW6432Node\Microsoft\Active Setup\Installed Components\{5460C4DF-B266-909E-CB58-E32B79832EB2}	3c75446458d631359d19de18c09dfcbc5a616dc0c5d50f0df48d5fb818b8320d.exe

UPX packed file 4 IoCs

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

upx

Processes:

resource	yara_rule
behavioral2/memory/1404-0-0x0000000010000000-0x000000001004D000-memory.dmp	upx
behavioral2/memory/468-1-0x0000000010000000-0x000000001004D000-memory.dmp	upx
behavioral2/memory/468-4-0x0000000010000000-0x000000001004D000-memory.dmp	upx
behavioral2/memory/1404-5-0x0000000010000000-0x000000001004D000-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:

3c75446458d631359d19de18c09dfcbc5a616dc0c5d50f0df48d5fb818b8320d.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\windows = "C:\\Windows\\system32\\InstallDir\\svchost.exe"	3c75446458d631359d19de18c09dfcbc5a616dc0c5d50f0df48d5fb818b8320d.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1162180587-977231257-2194346871-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\system32 = "C:\\Windows\\system32\\InstallDir\\svchost.exe"	3c75446458d631359d19de18c09dfcbc5a616dc0c5d50f0df48d5fb818b8320d.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1162180587-977231257-2194346871-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\HKCU = "C:\\Windows\\system32\\InstallDir\\svchost.exe"	3c75446458d631359d19de18c09dfcbc5a616dc0c5d50f0df48d5fb818b8320d.exe

Drops file in System32 directory 3 IoCs

Processes:

3c75446458d631359d19de18c09dfcbc5a616dc0c5d50f0df48d5fb818b8320d.exe

description	ioc	process
File opened for modification	C:\Windows\SysWOW64\InstallDir\	3c75446458d631359d19de18c09dfcbc5a616dc0c5d50f0df48d5fb818b8320d.exe
File opened for modification	C:\Windows\SysWOW64\InstallDir\svchost.exe	3c75446458d631359d19de18c09dfcbc5a616dc0c5d50f0df48d5fb818b8320d.exe
File created	C:\Windows\SysWOW64\InstallDir\svchost.exe	3c75446458d631359d19de18c09dfcbc5a616dc0c5d50f0df48d5fb818b8320d.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

3656 468 WerFault.exe svchost.exe
3512 468 WerFault.exe svchost.exe
Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

3c75446458d631359d19de18c09dfcbc5a616dc0c5d50f0df48d5fb818b8320d.exe

pid process

1404 3c75446458d631359d19de18c09dfcbc5a616dc0c5d50f0df48d5fb818b8320d.exe

pid	pid_target	process	target process
3656	468	WerFault.exe	svchost.exe
3512	468	WerFault.exe	svchost.exe

pid	process
1404	3c75446458d631359d19de18c09dfcbc5a616dc0c5d50f0df48d5fb818b8320d.exe

Suspicious use of WriteProcessMemory 4 IoCs

Processes:

3c75446458d631359d19de18c09dfcbc5a616dc0c5d50f0df48d5fb818b8320d.exe

description	pid	process	target process
PID 1404 wrote to memory of 468	1404	3c75446458d631359d19de18c09dfcbc5a616dc0c5d50f0df48d5fb818b8320d.exe	svchost.exe
PID 1404 wrote to memory of 468	1404	3c75446458d631359d19de18c09dfcbc5a616dc0c5d50f0df48d5fb818b8320d.exe	svchost.exe
PID 1404 wrote to memory of 468	1404	3c75446458d631359d19de18c09dfcbc5a616dc0c5d50f0df48d5fb818b8320d.exe	svchost.exe
PID 1404 wrote to memory of 468	1404	3c75446458d631359d19de18c09dfcbc5a616dc0c5d50f0df48d5fb818b8320d.exe	svchost.exe

C:\Users\Admin\AppData\Local\Temp\3c75446458d631359d19de18c09dfcbc5a616dc0c5d50f0df48d5fb818b8320d.exe
"C:\Users\Admin\AppData\Local\Temp\3c75446458d631359d19de18c09dfcbc5a616dc0c5d50f0df48d5fb818b8320d.exe"
1⤵
- Modifies Installed Components in the registry
- Adds Run key to start application
- Drops file in System32 directory
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1404
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  PID:468
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 468 -s 444
    3⤵
    - Program crash
    PID:3656
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 468 -s 488
    3⤵
    - Program crash
    PID:3512

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 432 -p 468 -ip 468
1⤵
PID:1412

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 508 -p 468 -ip 468
1⤵
PID:2732

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/468-1-0x0000000010000000-0x000000001004D000-memory.dmp

Filesize
308KB

Download
memory/468-4-0x0000000010000000-0x000000001004D000-memory.dmp

Filesize
308KB

Download
memory/1404-0-0x0000000010000000-0x000000001004D000-memory.dmp

Filesize
308KB

Download
memory/1404-5-0x0000000010000000-0x000000001004D000-memory.dmp

Filesize
308KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads