xtremerat | 4fe5aa82871c89df180a7f5c8278a9595a78acf15442aa2f77c63c4b3893df3a

General

Target

JaffaCakes118_08e058f3517660c18f672aa364a07215.exe
Size

52KB
MD5

08e058f3517660c18f672aa364a07215
SHA1

f871d71dbde5c46759163f0c1c28f9130a45e988
SHA256

4fe5aa82871c89df180a7f5c8278a9595a78acf15442aa2f77c63c4b3893df3a
SHA512

742232fe5d37197c63b1c702922e6fc54904c2def0f1fc012e2570e6203e78e3be81ccce2cf8278e21ebd027926085b876fd702110d18966a78f8778079d59f2
SSDEEP

768:Zejxt2/DzDLmYNv0L+CP4gEWSJPlFHXNSOAXHeAg8bs3Qa7wLJrz2v9W2GBB1UR/:ZGGLXyYF0CCP44SnFU1XN/2vg2G71PO3

Score

10^/10

xtremerat discovery persistence rat spyware upx

Malware Config

Signatures

Detect XtremeRAT payload 3 IoCs

resource	yara_rule
behavioral2/memory/3492-15-0x0000000010000000-0x000000001004D000-memory.dmp	family_xtremerat
behavioral2/memory/4540-17-0x0000000010000000-0x000000001004D000-memory.dmp	family_xtremerat
behavioral2/memory/3492-20-0x0000000010000000-0x000000001004D000-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
Xtremerat family
xtremerat

Executes dropped EXE 1 IoCs

pid	Process
4540	winupdcenter.exe

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral2/files/0x0007000000023c6c-12.dat	upx
behavioral2/memory/4540-13-0x0000000010000000-0x000000001004D000-memory.dmp	upx
behavioral2/memory/3492-15-0x0000000010000000-0x000000001004D000-memory.dmp	upx
behavioral2/memory/4540-17-0x0000000010000000-0x000000001004D000-memory.dmp	upx
behavioral2/memory/3492-20-0x0000000010000000-0x000000001004D000-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
4920	3492	WerFault.exe	84
3028	3492	WerFault.exe	84

System Location Discovery: System Language Discovery 1 TTPs 2 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	winupdcenter.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 2220 wrote to memory of 4540	2220	JaffaCakes118_08e058f3517660c18f672aa364a07215.exe	83
PID 2220 wrote to memory of 4540	2220	JaffaCakes118_08e058f3517660c18f672aa364a07215.exe	83
PID 2220 wrote to memory of 4540	2220	JaffaCakes118_08e058f3517660c18f672aa364a07215.exe	83
PID 4540 wrote to memory of 3492	4540	winupdcenter.exe	84
PID 4540 wrote to memory of 3492	4540	winupdcenter.exe	84
PID 4540 wrote to memory of 3492	4540	winupdcenter.exe	84
PID 4540 wrote to memory of 3492	4540	winupdcenter.exe	84
PID 4540 wrote to memory of 100	4540	winupdcenter.exe	85
PID 4540 wrote to memory of 100	4540	winupdcenter.exe	85
PID 4540 wrote to memory of 100	4540	winupdcenter.exe	85

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_08e058f3517660c18f672aa364a07215.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_08e058f3517660c18f672aa364a07215.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:2220
- C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\winupdcenter.exe
  C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\winupdcenter.exe
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:4540
- - C:\Windows\SysWOW64\svchost.exe
    svchost.exe
    3⤵
    - System Location Discovery: System Language Discovery
    PID:3492
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 3492 -s 488
      4⤵
      Program crash
      PID:4920
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 3492 -s 476
      4⤵
      Program crash
      PID:3028
- - C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
    "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe"
    3⤵
    PID:100

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 412 -p 3492 -ip 3492
1⤵
PID:1196

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 448 -p 3492 -ip 3492
1⤵
PID:3380

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

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Downloads

C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\winupdcenter.exe

Filesize
33KB

MD5
a00121c2f045a8f12c9a51a9b3872cb5

SHA1
5cdec4fc03894fbe452156543f2ec4fd72368ae8

SHA256
438d8db46e231e9bd86b469eaaa924924ed69362008a3fc7dd589f4fc105846c

SHA512
98b947e4cb98085b0fbfae69230b09ea6412773c72edd9e69cea0525d2a524c79965003779e1e7aa9150a5d861e4ac9b2e722de87f4c03a54be2bee898d8c780

Download Submit
memory/2220-6-0x000000001BA40000-0x000000001BA48000-memory.dmp

Filesize
32KB

Download
memory/2220-2-0x00007FFFE0D80000-0x00007FFFE1721000-memory.dmp

Filesize
9.6MB

Download
memory/2220-3-0x000000001C050000-0x000000001C51E000-memory.dmp

Filesize
4.8MB

Download
memory/2220-4-0x00007FFFE0D80000-0x00007FFFE1721000-memory.dmp

Filesize
9.6MB

Download
memory/2220-5-0x000000001C620000-0x000000001C6BC000-memory.dmp

Filesize
624KB

Download
memory/2220-0-0x00007FFFE1035000-0x00007FFFE1036000-memory.dmp

Filesize
4KB

Download
memory/2220-7-0x000000001C780000-0x000000001C7CC000-memory.dmp

Filesize
304KB

Download
memory/2220-1-0x000000001BAD0000-0x000000001BB76000-memory.dmp

Filesize
664KB

Download
memory/2220-19-0x00007FFFE0D80000-0x00007FFFE1721000-memory.dmp

Filesize
9.6MB

Download
memory/3492-15-0x0000000010000000-0x000000001004D000-memory.dmp

Filesize
308KB

Download
memory/3492-20-0x0000000010000000-0x000000001004D000-memory.dmp

Filesize
308KB

Download
memory/4540-13-0x0000000010000000-0x000000001004D000-memory.dmp

Filesize
308KB

Download
memory/4540-17-0x0000000010000000-0x000000001004D000-memory.dmp

Filesize
308KB

Download

Analysis

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