xtremerat | 85e73de5470443c5f5a23823f9afba835ad37fd7480eaf618287c6b31e6a8b3a

General

Target

85e73de5470443c5f5a23823f9afba835ad37fd7480eaf618287c6b31e6a8b3a.exe
Size

78KB
MD5

00244dcc0c1460553b1ff2ac7ee68d6d
SHA1

8593d6f3ed291c5de66b9240a24f34d5e023c635
SHA256

85e73de5470443c5f5a23823f9afba835ad37fd7480eaf618287c6b31e6a8b3a
SHA512

62dd536fdbe9655056ffb818f1fd29ba3245e2273e6fbc0aef4bf0359fe1faf7af988f48356a8a51bfbca3af5bb8368cc17794a667b7aaf03a66680fcff708fe
SSDEEP

1536:077SPQgf9iuZlf2/dYTeqyLWWa+Amx9BgTme+mjA4O8WI3rLY31gHNh+IuxzkY9S:0FmapMWInY314uJkf

Score

10^/10

xtremerat discovery persistence rat spyware upx

Malware Config

Extracted

Family

xtremerat

C2

oktayemre.dyndns.biz

Signatures

Detect XtremeRAT payload 5 IoCs

resource	yara_rule
behavioral2/memory/1680-5-0x0000000010000000-0x000000001004A000-memory.dmp	family_xtremerat
behavioral2/memory/1680-6-0x0000000010000000-0x000000001004A000-memory.dmp	family_xtremerat
behavioral2/memory/1896-7-0x0000000010000000-0x000000001004A000-memory.dmp	family_xtremerat
behavioral2/memory/1680-8-0x0000000010000000-0x000000001004A000-memory.dmp	family_xtremerat
behavioral2/memory/1896-9-0x0000000010000000-0x000000001004A000-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 4972 set thread context of 1680	4972	85e73de5470443c5f5a23823f9afba835ad37fd7480eaf618287c6b31e6a8b3a.exe	83

UPX packed file 7 IoCs

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

upx

resource	yara_rule
behavioral2/memory/1680-2-0x0000000010000000-0x000000001004A000-memory.dmp	upx
behavioral2/memory/1680-4-0x0000000010000000-0x000000001004A000-memory.dmp	upx
behavioral2/memory/1680-5-0x0000000010000000-0x000000001004A000-memory.dmp	upx
behavioral2/memory/1680-6-0x0000000010000000-0x000000001004A000-memory.dmp	upx
behavioral2/memory/1896-7-0x0000000010000000-0x000000001004A000-memory.dmp	upx
behavioral2/memory/1680-8-0x0000000010000000-0x000000001004A000-memory.dmp	upx
behavioral2/memory/1896-9-0x0000000010000000-0x000000001004A000-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
3748	1896	WerFault.exe	84
3400	1896	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	85e73de5470443c5f5a23823f9afba835ad37fd7480eaf618287c6b31e6a8b3a.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	85e73de5470443c5f5a23823f9afba835ad37fd7480eaf618287c6b31e6a8b3a.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4972	85e73de5470443c5f5a23823f9afba835ad37fd7480eaf618287c6b31e6a8b3a.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 4972 wrote to memory of 1680	4972	85e73de5470443c5f5a23823f9afba835ad37fd7480eaf618287c6b31e6a8b3a.exe	83
PID 4972 wrote to memory of 1680	4972	85e73de5470443c5f5a23823f9afba835ad37fd7480eaf618287c6b31e6a8b3a.exe	83
PID 4972 wrote to memory of 1680	4972	85e73de5470443c5f5a23823f9afba835ad37fd7480eaf618287c6b31e6a8b3a.exe	83
PID 4972 wrote to memory of 1680	4972	85e73de5470443c5f5a23823f9afba835ad37fd7480eaf618287c6b31e6a8b3a.exe	83
PID 4972 wrote to memory of 1680	4972	85e73de5470443c5f5a23823f9afba835ad37fd7480eaf618287c6b31e6a8b3a.exe	83
PID 4972 wrote to memory of 1680	4972	85e73de5470443c5f5a23823f9afba835ad37fd7480eaf618287c6b31e6a8b3a.exe	83
PID 4972 wrote to memory of 1680	4972	85e73de5470443c5f5a23823f9afba835ad37fd7480eaf618287c6b31e6a8b3a.exe	83
PID 4972 wrote to memory of 1680	4972	85e73de5470443c5f5a23823f9afba835ad37fd7480eaf618287c6b31e6a8b3a.exe	83
PID 1680 wrote to memory of 1896	1680	85e73de5470443c5f5a23823f9afba835ad37fd7480eaf618287c6b31e6a8b3a.exe	84
PID 1680 wrote to memory of 1896	1680	85e73de5470443c5f5a23823f9afba835ad37fd7480eaf618287c6b31e6a8b3a.exe	84
PID 1680 wrote to memory of 1896	1680	85e73de5470443c5f5a23823f9afba835ad37fd7480eaf618287c6b31e6a8b3a.exe	84
PID 1680 wrote to memory of 1896	1680	85e73de5470443c5f5a23823f9afba835ad37fd7480eaf618287c6b31e6a8b3a.exe	84
PID 1680 wrote to memory of 4188	1680	85e73de5470443c5f5a23823f9afba835ad37fd7480eaf618287c6b31e6a8b3a.exe	85
PID 1680 wrote to memory of 4188	1680	85e73de5470443c5f5a23823f9afba835ad37fd7480eaf618287c6b31e6a8b3a.exe	85
PID 1680 wrote to memory of 4188	1680	85e73de5470443c5f5a23823f9afba835ad37fd7480eaf618287c6b31e6a8b3a.exe	85

C:\Users\Admin\AppData\Local\Temp\85e73de5470443c5f5a23823f9afba835ad37fd7480eaf618287c6b31e6a8b3a.exe
"C:\Users\Admin\AppData\Local\Temp\85e73de5470443c5f5a23823f9afba835ad37fd7480eaf618287c6b31e6a8b3a.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4972
- C:\Users\Admin\AppData\Local\Temp\85e73de5470443c5f5a23823f9afba835ad37fd7480eaf618287c6b31e6a8b3a.exe
  C:\Users\Admin\AppData\Local\Temp\85e73de5470443c5f5a23823f9afba835ad37fd7480eaf618287c6b31e6a8b3a.exe
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:1680
- - C:\Windows\SysWOW64\svchost.exe
    svchost.exe
    3⤵
    - System Location Discovery: System Language Discovery
    PID:1896
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 1896 -s 480
      4⤵
      Program crash
      PID:3748
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 1896 -s 488
      4⤵
      Program crash
      PID:3400
- - C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
    "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe"
    3⤵
    PID:4188

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 1896 -ip 1896
1⤵
PID:2036

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 528 -p 1896 -ip 1896
1⤵
PID:3068

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

Loading Replay Monitor...

Downloads

memory/1680-2-0x0000000010000000-0x000000001004A000-memory.dmp

Filesize
296KB

Download
memory/1680-4-0x0000000010000000-0x000000001004A000-memory.dmp

Filesize
296KB

Download
memory/1680-5-0x0000000010000000-0x000000001004A000-memory.dmp

Filesize
296KB

Download
memory/1680-6-0x0000000010000000-0x000000001004A000-memory.dmp

Filesize
296KB

Download
memory/1680-8-0x0000000010000000-0x000000001004A000-memory.dmp

Filesize
296KB

Download
memory/1896-7-0x0000000010000000-0x000000001004A000-memory.dmp

Filesize
296KB

Download
memory/1896-9-0x0000000010000000-0x000000001004A000-memory.dmp

Filesize
296KB

Download

Analysis

Sharing