xtremerat | be3d36107b945e834dea3913f487e7b39d680975a0c363f3b06ce9559bcf19a9

General

Target
80bcb5330f6c171e3fbf0fe974b2b74d.exe
Size 880KB
Sample240129-yr2mvsbbhq
SHA256 be3d36107b945e834dea3913f487e7b39d680975a0c363f3b06ce9559bcf19a9
MD5 80bcb5330f6c171e3fbf0fe974b2b74d
SHA1 8e557a79e720459d54a12bde40d836300e78b557
SHA512 6c144f98411b13769f43cb91353e14e0cf1058ffa826827e6a44f565233495ddc4bdcbe50e46eefa8ddc702054ece77a9238c7d392fb741b0d7d8faacdaa4a9a
SSDEEP 12288:JEc4Y8GXlnEeeirh1gIziWV1etdr45yeD8p9KPyQOTa4Guy:JEc4mNE5m17V1etdcDmepOT1Gd
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

xtremerat persistence rat spyware upx

Malware Config

Extracted

Family

xtremerat

C2

xtremeratbilubilu.ddns.net

Signatures

Detect XtremeRAT payload 8 IoCs

resource	yara_rule
behavioral2/memory/556-5-0x0000000010000000-0x000000001015D000-memory.dmp	family_xtremerat
behavioral2/memory/556-6-0x0000000010000000-0x000000001015D000-memory.dmp	family_xtremerat
behavioral2/memory/3924-7-0x0000000010000000-0x000000001015D000-memory.dmp	family_xtremerat
behavioral2/memory/556-10-0x0000000010000000-0x000000001015D000-memory.dmp	family_xtremerat
behavioral2/memory/556-11-0x0000000010000000-0x000000001015D000-memory.dmp	family_xtremerat
behavioral2/memory/556-12-0x0000000010000000-0x000000001015D000-memory.dmp	family_xtremerat
behavioral2/memory/3924-13-0x0000000010000000-0x000000001015D000-memory.dmp	family_xtremerat
behavioral2/memory/556-14-0x0000000010000000-0x000000001015D000-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\{3YFNV53O-OWO5-8K78-85A6-080RIK7S28P5}\StubPath = "C:\\Windows\\system32\\Windows\\taskhost.exe restart"	80bcb5330f6c171e3fbf0fe974b2b74d.EXE
Key created	\REGISTRY\MACHINE\Software\WOW6432Node\Microsoft\Active Setup\Installed Components\{3YFNV53O-OWO5-8K78-85A6-080RIK7S28P5}	80bcb5330f6c171e3fbf0fe974b2b74d.EXE

UPX packed file 10 IoCs

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

upx

resource	yara_rule
behavioral2/memory/556-2-0x0000000010000000-0x000000001015D000-memory.dmp	upx
behavioral2/memory/556-4-0x0000000010000000-0x000000001015D000-memory.dmp	upx
behavioral2/memory/556-5-0x0000000010000000-0x000000001015D000-memory.dmp	upx
behavioral2/memory/556-6-0x0000000010000000-0x000000001015D000-memory.dmp	upx
behavioral2/memory/3924-7-0x0000000010000000-0x000000001015D000-memory.dmp	upx
behavioral2/memory/556-10-0x0000000010000000-0x000000001015D000-memory.dmp	upx
behavioral2/memory/556-11-0x0000000010000000-0x000000001015D000-memory.dmp	upx
behavioral2/memory/556-12-0x0000000010000000-0x000000001015D000-memory.dmp	upx
behavioral2/memory/3924-13-0x0000000010000000-0x000000001015D000-memory.dmp	upx
behavioral2/memory/556-14-0x0000000010000000-0x000000001015D000-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\windows = "C:\\Windows\\system32\\Windows\\taskhost.exe"	80bcb5330f6c171e3fbf0fe974b2b74d.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-3073191680-435865314-2862784915-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\original = "C:\\Windows\\system32\\Windows\\taskhost.exe"	80bcb5330f6c171e3fbf0fe974b2b74d.EXE

Drops file in System32 directory 3 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\Windows\taskhost.exe	80bcb5330f6c171e3fbf0fe974b2b74d.EXE
File created	C:\Windows\SysWOW64\Windows\taskhost.exe	80bcb5330f6c171e3fbf0fe974b2b74d.EXE
File opened for modification	C:\Windows\SysWOW64\Windows\	80bcb5330f6c171e3fbf0fe974b2b74d.EXE

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4884 set thread context of 556	4884	80bcb5330f6c171e3fbf0fe974b2b74d.exe	83

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
4260	3924	WerFault.exe	84
4956	3924	WerFault.exe	84

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
4884	80bcb5330f6c171e3fbf0fe974b2b74d.exe
556	80bcb5330f6c171e3fbf0fe974b2b74d.EXE

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 4884 wrote to memory of 556	4884	80bcb5330f6c171e3fbf0fe974b2b74d.exe	83
PID 4884 wrote to memory of 556	4884	80bcb5330f6c171e3fbf0fe974b2b74d.exe	83
PID 4884 wrote to memory of 556	4884	80bcb5330f6c171e3fbf0fe974b2b74d.exe	83
PID 4884 wrote to memory of 556	4884	80bcb5330f6c171e3fbf0fe974b2b74d.exe	83
PID 4884 wrote to memory of 556	4884	80bcb5330f6c171e3fbf0fe974b2b74d.exe	83
PID 4884 wrote to memory of 556	4884	80bcb5330f6c171e3fbf0fe974b2b74d.exe	83
PID 4884 wrote to memory of 556	4884	80bcb5330f6c171e3fbf0fe974b2b74d.exe	83
PID 4884 wrote to memory of 556	4884	80bcb5330f6c171e3fbf0fe974b2b74d.exe	83
PID 556 wrote to memory of 3924	556	80bcb5330f6c171e3fbf0fe974b2b74d.EXE	84
PID 556 wrote to memory of 3924	556	80bcb5330f6c171e3fbf0fe974b2b74d.EXE	84
PID 556 wrote to memory of 3924	556	80bcb5330f6c171e3fbf0fe974b2b74d.EXE	84
PID 556 wrote to memory of 3924	556	80bcb5330f6c171e3fbf0fe974b2b74d.EXE	84

C:\Users\Admin\AppData\Local\Temp\80bcb5330f6c171e3fbf0fe974b2b74d.exe
"C:\Users\Admin\AppData\Local\Temp\80bcb5330f6c171e3fbf0fe974b2b74d.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4884
- C:\Users\Admin\AppData\Local\Temp\80bcb5330f6c171e3fbf0fe974b2b74d.EXE
  "C:\Users\Admin\AppData\Local\Temp\80bcb5330f6c171e3fbf0fe974b2b74d.EXE"
  2⤵
  - 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:556
- - C:\Windows\SysWOW64\svchost.exe
    svchost.exe
    3⤵
    PID:3924
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 3924 -s 480
      4⤵
      Program crash
      PID:4260
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 3924 -s 488
      4⤵
      Program crash
      PID:4956

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 3924 -ip 3924
1⤵
PID:5104

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 416 -p 3924 -ip 3924
1⤵
PID:1448

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/556-2-0x0000000010000000-0x000000001015D000-memory.dmp

Download

memory/556-4-0x0000000010000000-0x000000001015D000-memory.dmp

Download

memory/556-5-0x0000000010000000-0x000000001015D000-memory.dmp

Download

memory/556-6-0x0000000010000000-0x000000001015D000-memory.dmp

Download

memory/556-10-0x0000000010000000-0x000000001015D000-memory.dmp

Download

memory/556-11-0x0000000010000000-0x000000001015D000-memory.dmp

Download

memory/556-12-0x0000000010000000-0x000000001015D000-memory.dmp

Download

memory/556-14-0x0000000010000000-0x000000001015D000-memory.dmp

Download

memory/3924-7-0x0000000010000000-0x000000001015D000-memory.dmp

Download

memory/3924-13-0x0000000010000000-0x000000001015D000-memory.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads