xtremerat | 4e06ed1b6a74522bdce80911f53bfe2444408bfa0bce535c011a1f9bbfa5fe08

General

Target

JaffaCakes118_a192456cfe9e6a4dfb2749bbc25a6f3a.exe
Size

826KB
MD5

a192456cfe9e6a4dfb2749bbc25a6f3a
SHA1

1d1e0bfbe4fbb19c8f515ab940e249c1370c4d69
SHA256

4e06ed1b6a74522bdce80911f53bfe2444408bfa0bce535c011a1f9bbfa5fe08
SHA512

583b2a6f505343c0ce6193693c0f9c3d86a3142c93fa92c9a2892d3d6012f88c1944e6a3afe77ae28c620692cbe94038fdccb56e45520d307b49ab97f68a17d6
SSDEEP

24576:9vwQMN2K3yWds0JkKyVm075lymxOOLhya98+BP6tCqLRYC:FlhadsL4075wmTttOCqv

Score

10^/10

xtremerat discovery persistence rat spyware upx

Malware Config

Extracted

Family

xtremerat

C2

xstrema.no-ip.org

Signatures

Detect XtremeRAT payload 5 IoCs

resource	yara_rule
behavioral1/memory/1568-11-0x0000000010000000-0x000000001004E000-memory.dmp	family_xtremerat
behavioral1/memory/1568-10-0x0000000010000000-0x000000001004E000-memory.dmp	family_xtremerat
behavioral1/memory/3708-12-0x0000000010000000-0x000000001004E000-memory.dmp	family_xtremerat
behavioral1/memory/1568-13-0x0000000010000000-0x000000001004E000-memory.dmp	family_xtremerat
behavioral1/memory/3708-15-0x0000000010000000-0x000000001004E000-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 4212 set thread context of 1568	4212	JaffaCakes118_a192456cfe9e6a4dfb2749bbc25a6f3a.exe	86

UPX packed file 7 IoCs

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

upx

resource	yara_rule
behavioral1/memory/1568-4-0x0000000010000000-0x000000001004E000-memory.dmp	upx
behavioral1/memory/1568-6-0x0000000010000000-0x000000001004E000-memory.dmp	upx
behavioral1/memory/1568-11-0x0000000010000000-0x000000001004E000-memory.dmp	upx
behavioral1/memory/1568-10-0x0000000010000000-0x000000001004E000-memory.dmp	upx
behavioral1/memory/3708-12-0x0000000010000000-0x000000001004E000-memory.dmp	upx
behavioral1/memory/1568-13-0x0000000010000000-0x000000001004E000-memory.dmp	upx
behavioral1/memory/3708-15-0x0000000010000000-0x000000001004E000-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
3632	3708	WerFault.exe	87
3068	3708	WerFault.exe	87

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	JaffaCakes118_a192456cfe9e6a4dfb2749bbc25a6f3a.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_a192456cfe9e6a4dfb2749bbc25a6f3a.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
4212	JaffaCakes118_a192456cfe9e6a4dfb2749bbc25a6f3a.exe
4212	JaffaCakes118_a192456cfe9e6a4dfb2749bbc25a6f3a.exe

Suspicious use of WriteProcessMemory 16 IoCs

description	pid	Process	procid_target
PID 4212 wrote to memory of 1568	4212	JaffaCakes118_a192456cfe9e6a4dfb2749bbc25a6f3a.exe	86
PID 4212 wrote to memory of 1568	4212	JaffaCakes118_a192456cfe9e6a4dfb2749bbc25a6f3a.exe	86
PID 4212 wrote to memory of 1568	4212	JaffaCakes118_a192456cfe9e6a4dfb2749bbc25a6f3a.exe	86
PID 4212 wrote to memory of 1568	4212	JaffaCakes118_a192456cfe9e6a4dfb2749bbc25a6f3a.exe	86
PID 4212 wrote to memory of 1568	4212	JaffaCakes118_a192456cfe9e6a4dfb2749bbc25a6f3a.exe	86
PID 4212 wrote to memory of 1568	4212	JaffaCakes118_a192456cfe9e6a4dfb2749bbc25a6f3a.exe	86
PID 4212 wrote to memory of 1568	4212	JaffaCakes118_a192456cfe9e6a4dfb2749bbc25a6f3a.exe	86
PID 4212 wrote to memory of 1568	4212	JaffaCakes118_a192456cfe9e6a4dfb2749bbc25a6f3a.exe	86
PID 4212 wrote to memory of 1568	4212	JaffaCakes118_a192456cfe9e6a4dfb2749bbc25a6f3a.exe	86
PID 1568 wrote to memory of 3708	1568	JaffaCakes118_a192456cfe9e6a4dfb2749bbc25a6f3a.exe	87
PID 1568 wrote to memory of 3708	1568	JaffaCakes118_a192456cfe9e6a4dfb2749bbc25a6f3a.exe	87
PID 1568 wrote to memory of 3708	1568	JaffaCakes118_a192456cfe9e6a4dfb2749bbc25a6f3a.exe	87
PID 1568 wrote to memory of 3708	1568	JaffaCakes118_a192456cfe9e6a4dfb2749bbc25a6f3a.exe	87
PID 1568 wrote to memory of 4036	1568	JaffaCakes118_a192456cfe9e6a4dfb2749bbc25a6f3a.exe	88
PID 1568 wrote to memory of 4036	1568	JaffaCakes118_a192456cfe9e6a4dfb2749bbc25a6f3a.exe	88
PID 1568 wrote to memory of 4036	1568	JaffaCakes118_a192456cfe9e6a4dfb2749bbc25a6f3a.exe	88

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_a192456cfe9e6a4dfb2749bbc25a6f3a.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_a192456cfe9e6a4dfb2749bbc25a6f3a.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4212
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_a192456cfe9e6a4dfb2749bbc25a6f3a.exe
  "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_a192456cfe9e6a4dfb2749bbc25a6f3a.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:1568
- - C:\Windows\SysWOW64\svchost.exe
    svchost.exe
    3⤵
    - System Location Discovery: System Language Discovery
    PID:3708
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 3708 -s 480
      4⤵
      Program crash
      PID:3632
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 3708 -s 488
      4⤵
      Program crash
      PID:3068
- - C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
    "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe"
    3⤵
    PID:4036

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 3708 -ip 3708
1⤵
PID:3152

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 460 -p 3708 -ip 3708
1⤵
PID:4528

Network

MITRE ATT&CK Enterprise v16

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/1568-4-0x0000000010000000-0x000000001004E000-memory.dmp

Filesize
312KB

Download
memory/1568-6-0x0000000010000000-0x000000001004E000-memory.dmp

Filesize
312KB

Download
memory/1568-11-0x0000000010000000-0x000000001004E000-memory.dmp

Filesize
312KB

Download
memory/1568-10-0x0000000010000000-0x000000001004E000-memory.dmp

Filesize
312KB

Download
memory/1568-13-0x0000000010000000-0x000000001004E000-memory.dmp

Filesize
312KB

Download
memory/3708-12-0x0000000010000000-0x000000001004E000-memory.dmp

Filesize
312KB

Download
memory/3708-15-0x0000000010000000-0x000000001004E000-memory.dmp

Filesize
312KB

Download
memory/4212-0-0x0000000000400000-0x00000000007B0000-memory.dmp

Filesize
3.7MB

Download
memory/4212-8-0x0000000000400000-0x00000000007B0000-memory.dmp

Filesize
3.7MB

Download

Analysis

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