xtremerat | 2037a3487578774ebb28eb3227bb71ef86f2c2155849b893803b16571c1e0dae

General

Target

JaffaCakes118_f4c8d4362fc4b69e9478cef30b6c3750.exe
Size

91KB
MD5

f4c8d4362fc4b69e9478cef30b6c3750
SHA1

89453e80dcd76bf61926017433f9669958fd1c64
SHA256

2037a3487578774ebb28eb3227bb71ef86f2c2155849b893803b16571c1e0dae
SHA512

2babc6bb7b1dc48a59b269e5a33fc2cec01136b85871f61e51a730becb0764dab13a74f3f7ed1c811322013eb2332cc797a115b9cf68e74f65b2481a57663944
SSDEEP

1536:pG2EnYa5m08A1lTtmFwD+5YcQrQni4xrSeLMXLMpOLJ0rV0PXH:pynFI0r1lTtmFwj/rQlxrSeIwpOLc0P

Score

10^/10

xtremerat discovery persistence rat spyware upx

Malware Config

Extracted

Family

xtremerat

C2

mamon.zapto.org

Signatures

Detect XtremeRAT payload 5 IoCs

resource	yara_rule
behavioral2/memory/4688-7-0x0000000010000000-0x000000001004D000-memory.dmp	family_xtremerat
behavioral2/memory/4688-8-0x0000000010000000-0x000000001004D000-memory.dmp	family_xtremerat
behavioral2/memory/520-10-0x0000000010000000-0x000000001004D000-memory.dmp	family_xtremerat
behavioral2/memory/4688-11-0x0000000010000000-0x000000001004D000-memory.dmp	family_xtremerat
behavioral2/memory/520-12-0x0000000010000000-0x000000001004D000-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

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2808 set thread context of 4688	2808	JaffaCakes118_f4c8d4362fc4b69e9478cef30b6c3750.exe	86

UPX packed file 7 IoCs

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

upx

resource	yara_rule
behavioral2/memory/4688-3-0x0000000010000000-0x000000001004D000-memory.dmp	upx
behavioral2/memory/4688-6-0x0000000010000000-0x000000001004D000-memory.dmp	upx
behavioral2/memory/4688-7-0x0000000010000000-0x000000001004D000-memory.dmp	upx
behavioral2/memory/4688-8-0x0000000010000000-0x000000001004D000-memory.dmp	upx
behavioral2/memory/520-10-0x0000000010000000-0x000000001004D000-memory.dmp	upx
behavioral2/memory/4688-11-0x0000000010000000-0x000000001004D000-memory.dmp	upx
behavioral2/memory/520-12-0x0000000010000000-0x000000001004D000-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
3668	520	WerFault.exe	87
3436	520	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_f4c8d4362fc4b69e9478cef30b6c3750.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_f4c8d4362fc4b69e9478cef30b6c3750.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2808	JaffaCakes118_f4c8d4362fc4b69e9478cef30b6c3750.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 2808 wrote to memory of 4688	2808	JaffaCakes118_f4c8d4362fc4b69e9478cef30b6c3750.exe	86
PID 2808 wrote to memory of 4688	2808	JaffaCakes118_f4c8d4362fc4b69e9478cef30b6c3750.exe	86
PID 2808 wrote to memory of 4688	2808	JaffaCakes118_f4c8d4362fc4b69e9478cef30b6c3750.exe	86
PID 2808 wrote to memory of 4688	2808	JaffaCakes118_f4c8d4362fc4b69e9478cef30b6c3750.exe	86
PID 2808 wrote to memory of 4688	2808	JaffaCakes118_f4c8d4362fc4b69e9478cef30b6c3750.exe	86
PID 2808 wrote to memory of 4688	2808	JaffaCakes118_f4c8d4362fc4b69e9478cef30b6c3750.exe	86
PID 2808 wrote to memory of 4688	2808	JaffaCakes118_f4c8d4362fc4b69e9478cef30b6c3750.exe	86
PID 2808 wrote to memory of 4688	2808	JaffaCakes118_f4c8d4362fc4b69e9478cef30b6c3750.exe	86
PID 4688 wrote to memory of 520	4688	JaffaCakes118_f4c8d4362fc4b69e9478cef30b6c3750.exe	87
PID 4688 wrote to memory of 520	4688	JaffaCakes118_f4c8d4362fc4b69e9478cef30b6c3750.exe	87
PID 4688 wrote to memory of 520	4688	JaffaCakes118_f4c8d4362fc4b69e9478cef30b6c3750.exe	87
PID 4688 wrote to memory of 520	4688	JaffaCakes118_f4c8d4362fc4b69e9478cef30b6c3750.exe	87
PID 4688 wrote to memory of 3236	4688	JaffaCakes118_f4c8d4362fc4b69e9478cef30b6c3750.exe	88
PID 4688 wrote to memory of 3236	4688	JaffaCakes118_f4c8d4362fc4b69e9478cef30b6c3750.exe	88
PID 4688 wrote to memory of 3236	4688	JaffaCakes118_f4c8d4362fc4b69e9478cef30b6c3750.exe	88

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_f4c8d4362fc4b69e9478cef30b6c3750.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_f4c8d4362fc4b69e9478cef30b6c3750.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2808
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_f4c8d4362fc4b69e9478cef30b6c3750.exe
  "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_f4c8d4362fc4b69e9478cef30b6c3750.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:4688
- - C:\Windows\SysWOW64\svchost.exe
    svchost.exe
    3⤵
    - System Location Discovery: System Language Discovery
    PID:520
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 520 -s 480
      4⤵
      Program crash
      PID:3668
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 520 -s 504
      4⤵
      Program crash
      PID:3436
- - C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
    "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe"
    3⤵
    PID:3236

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 376 -p 520 -ip 520
1⤵
PID:4940

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 532 -p 520 -ip 520
1⤵
PID:2280

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/520-10-0x0000000010000000-0x000000001004D000-memory.dmp

Filesize
308KB

Download
memory/520-12-0x0000000010000000-0x000000001004D000-memory.dmp

Filesize
308KB

Download
memory/2808-0-0x0000000074962000-0x0000000074963000-memory.dmp

Filesize
4KB

Download
memory/2808-2-0x0000000074960000-0x0000000074F11000-memory.dmp

Filesize
5.7MB

Download
memory/2808-1-0x0000000074960000-0x0000000074F11000-memory.dmp

Filesize
5.7MB

Download
memory/2808-9-0x0000000074960000-0x0000000074F11000-memory.dmp

Filesize
5.7MB

Download
memory/4688-3-0x0000000010000000-0x000000001004D000-memory.dmp

Filesize
308KB

Download
memory/4688-6-0x0000000010000000-0x000000001004D000-memory.dmp

Filesize
308KB

Download
memory/4688-7-0x0000000010000000-0x000000001004D000-memory.dmp

Filesize
308KB

Download
memory/4688-8-0x0000000010000000-0x000000001004D000-memory.dmp

Filesize
308KB

Download
memory/4688-11-0x0000000010000000-0x000000001004D000-memory.dmp

Filesize
308KB

Download

Analysis

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