xtremerat | 8684e4eababa253d603875db278c0e108ea05dff323e0f2683685c0745ba49e5

General

Target

8684e4eababa253d603875db278c0e108ea05dff323e0f2683685c0745ba49e5N.exe
Size

78KB
MD5

b3283e469497c93a4be15446376cf9f0
SHA1

36e1992dab4b8be03fc7f433efc21c06ad10d57b
SHA256

8684e4eababa253d603875db278c0e108ea05dff323e0f2683685c0745ba49e5
SHA512

b519a774eae1913606931e40c6ed061f4bdd0b622e582d8d5e4a30c050dbf4e2b5b62b97f01bfa07436f0229eea2ffe0d37e4cf98ad92b0eced1ac21dccdaef5
SSDEEP

1536:077SPQgf9iuZlf2/dYTeqyLWWa+Amx9BgTme+mjA4O8WI3rLY31gHNh+IuxzkY9G:0FmapMWInY314uJkd

Score

10^/10

xtremerat discovery persistence rat spyware upx

Malware Config

Extracted

Family

xtremerat

C2

oktayemre.dyndns.biz

Signatures

Detect XtremeRAT payload 4 IoCs

resource	yara_rule
behavioral2/memory/4356-5-0x0000000010000000-0x000000001004A000-memory.dmp	family_xtremerat
behavioral2/memory/4944-7-0x0000000010000000-0x000000001004A000-memory.dmp	family_xtremerat
behavioral2/memory/4356-8-0x0000000010000000-0x000000001004A000-memory.dmp	family_xtremerat
behavioral2/memory/4944-9-0x0000000010000000-0x000000001004A000-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
Xtremerat family
xtremerat

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4048 set thread context of 4356	4048	8684e4eababa253d603875db278c0e108ea05dff323e0f2683685c0745ba49e5N.exe	83

UPX packed file 7 IoCs

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

upx

resource	yara_rule
behavioral2/memory/4356-4-0x0000000010000000-0x000000001004A000-memory.dmp	upx
behavioral2/memory/4356-2-0x0000000010000000-0x000000001004A000-memory.dmp	upx
behavioral2/memory/4356-6-0x0000000010000000-0x000000001004A000-memory.dmp	upx
behavioral2/memory/4356-5-0x0000000010000000-0x000000001004A000-memory.dmp	upx
behavioral2/memory/4944-7-0x0000000010000000-0x000000001004A000-memory.dmp	upx
behavioral2/memory/4356-8-0x0000000010000000-0x000000001004A000-memory.dmp	upx
behavioral2/memory/4944-9-0x0000000010000000-0x000000001004A000-memory.dmp	upx

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
4464	4944	WerFault.exe	84
3408	4944	WerFault.exe	84

System Location Discovery: System Language Discovery 1 TTPs 3 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	8684e4eababa253d603875db278c0e108ea05dff323e0f2683685c0745ba49e5N.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	8684e4eababa253d603875db278c0e108ea05dff323e0f2683685c0745ba49e5N.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4048	8684e4eababa253d603875db278c0e108ea05dff323e0f2683685c0745ba49e5N.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 4048 wrote to memory of 4356	4048	8684e4eababa253d603875db278c0e108ea05dff323e0f2683685c0745ba49e5N.exe	83
PID 4048 wrote to memory of 4356	4048	8684e4eababa253d603875db278c0e108ea05dff323e0f2683685c0745ba49e5N.exe	83
PID 4048 wrote to memory of 4356	4048	8684e4eababa253d603875db278c0e108ea05dff323e0f2683685c0745ba49e5N.exe	83
PID 4048 wrote to memory of 4356	4048	8684e4eababa253d603875db278c0e108ea05dff323e0f2683685c0745ba49e5N.exe	83
PID 4048 wrote to memory of 4356	4048	8684e4eababa253d603875db278c0e108ea05dff323e0f2683685c0745ba49e5N.exe	83
PID 4048 wrote to memory of 4356	4048	8684e4eababa253d603875db278c0e108ea05dff323e0f2683685c0745ba49e5N.exe	83
PID 4048 wrote to memory of 4356	4048	8684e4eababa253d603875db278c0e108ea05dff323e0f2683685c0745ba49e5N.exe	83
PID 4048 wrote to memory of 4356	4048	8684e4eababa253d603875db278c0e108ea05dff323e0f2683685c0745ba49e5N.exe	83
PID 4356 wrote to memory of 4944	4356	8684e4eababa253d603875db278c0e108ea05dff323e0f2683685c0745ba49e5N.exe	84
PID 4356 wrote to memory of 4944	4356	8684e4eababa253d603875db278c0e108ea05dff323e0f2683685c0745ba49e5N.exe	84
PID 4356 wrote to memory of 4944	4356	8684e4eababa253d603875db278c0e108ea05dff323e0f2683685c0745ba49e5N.exe	84
PID 4356 wrote to memory of 4944	4356	8684e4eababa253d603875db278c0e108ea05dff323e0f2683685c0745ba49e5N.exe	84
PID 4356 wrote to memory of 1476	4356	8684e4eababa253d603875db278c0e108ea05dff323e0f2683685c0745ba49e5N.exe	85
PID 4356 wrote to memory of 1476	4356	8684e4eababa253d603875db278c0e108ea05dff323e0f2683685c0745ba49e5N.exe	85
PID 4356 wrote to memory of 1476	4356	8684e4eababa253d603875db278c0e108ea05dff323e0f2683685c0745ba49e5N.exe	85

C:\Users\Admin\AppData\Local\Temp\8684e4eababa253d603875db278c0e108ea05dff323e0f2683685c0745ba49e5N.exe
"C:\Users\Admin\AppData\Local\Temp\8684e4eababa253d603875db278c0e108ea05dff323e0f2683685c0745ba49e5N.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4048
- C:\Users\Admin\AppData\Local\Temp\8684e4eababa253d603875db278c0e108ea05dff323e0f2683685c0745ba49e5N.exe
  C:\Users\Admin\AppData\Local\Temp\8684e4eababa253d603875db278c0e108ea05dff323e0f2683685c0745ba49e5N.exe
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:4356
- - C:\Windows\SysWOW64\svchost.exe
    svchost.exe
    3⤵
    - System Location Discovery: System Language Discovery
    PID:4944
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 4944 -s 488
      4⤵
      Program crash
      PID:4464
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 4944 -s 476
      4⤵
      Program crash
      PID:3408
- - C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
    "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe"
    3⤵
    PID:1476

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 424 -p 4944 -ip 4944
1⤵
PID:2196

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 512 -p 4944 -ip 4944
1⤵
PID:1484

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

1

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/4356-4-0x0000000010000000-0x000000001004A000-memory.dmp

Filesize
296KB

Download
memory/4356-2-0x0000000010000000-0x000000001004A000-memory.dmp

Filesize
296KB

Download
memory/4356-6-0x0000000010000000-0x000000001004A000-memory.dmp

Filesize
296KB

Download
memory/4356-5-0x0000000010000000-0x000000001004A000-memory.dmp

Filesize
296KB

Download
memory/4356-8-0x0000000010000000-0x000000001004A000-memory.dmp

Filesize
296KB

Download
memory/4944-7-0x0000000010000000-0x000000001004A000-memory.dmp

Filesize
296KB

Download
memory/4944-9-0x0000000010000000-0x000000001004A000-memory.dmp

Filesize
296KB

Download

Analysis

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