xtremerat | 3df12da2dd8c347dc96eace427165e30fb9d503ebaefc0dec9118278476d5b36

General

Target

c33f95d255823028c943704727d2369e_JaffaCakes118.exe
Size

650KB
MD5

c33f95d255823028c943704727d2369e
SHA1

686f1e7be02cf6bdf795997d105a55fd5442b332
SHA256

3df12da2dd8c347dc96eace427165e30fb9d503ebaefc0dec9118278476d5b36
SHA512

2dedfca03fb2eaa992c66474ade5792002b4591c0abcb5386586239073fbdd8f9a95655d9e64ea0ef4b83fc63609e0ab1e558e72df1a3b66b8a7eb9a9e031882
SSDEEP

12288:mo7YNQ8GnBaWnBsPDqWOFD4RD+drOqZbmqMrUANW+dR0zHavdmnYHHQW:vwQBBaWnBCqOeSqZbmNrU0W0RVvfT

Score

10^/10

xtremerat discovery persistence rat spyware upx

Malware Config

Extracted

Family

xtremerat

C2

sharkop.dyndns.org

Signatures

Detect XtremeRAT payload 5 IoCs

resource	yara_rule
behavioral2/memory/1408-9-0x0000000010000000-0x000000001004B000-memory.dmp	family_xtremerat
behavioral2/memory/1408-8-0x0000000010000000-0x000000001004B000-memory.dmp	family_xtremerat
behavioral2/memory/1360-11-0x0000000010000000-0x000000001004B000-memory.dmp	family_xtremerat
behavioral2/memory/1408-12-0x0000000010000000-0x000000001004B000-memory.dmp	family_xtremerat
behavioral2/memory/1360-13-0x0000000010000000-0x000000001004B000-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 2124 set thread context of 1408	2124	c33f95d255823028c943704727d2369e_JaffaCakes118.exe	83

UPX packed file 7 IoCs

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

upx

resource	yara_rule
behavioral2/memory/1408-4-0x0000000010000000-0x000000001004B000-memory.dmp	upx
behavioral2/memory/1408-6-0x0000000010000000-0x000000001004B000-memory.dmp	upx
behavioral2/memory/1408-9-0x0000000010000000-0x000000001004B000-memory.dmp	upx
behavioral2/memory/1408-8-0x0000000010000000-0x000000001004B000-memory.dmp	upx
behavioral2/memory/1360-11-0x0000000010000000-0x000000001004B000-memory.dmp	upx
behavioral2/memory/1408-12-0x0000000010000000-0x000000001004B000-memory.dmp	upx
behavioral2/memory/1360-13-0x0000000010000000-0x000000001004B000-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
1576	1360	WerFault.exe	84
228	1360	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	c33f95d255823028c943704727d2369e_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	c33f95d255823028c943704727d2369e_JaffaCakes118.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
2124	c33f95d255823028c943704727d2369e_JaffaCakes118.exe
2124	c33f95d255823028c943704727d2369e_JaffaCakes118.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 2124 wrote to memory of 1408	2124	c33f95d255823028c943704727d2369e_JaffaCakes118.exe	83
PID 2124 wrote to memory of 1408	2124	c33f95d255823028c943704727d2369e_JaffaCakes118.exe	83
PID 2124 wrote to memory of 1408	2124	c33f95d255823028c943704727d2369e_JaffaCakes118.exe	83
PID 2124 wrote to memory of 1408	2124	c33f95d255823028c943704727d2369e_JaffaCakes118.exe	83
PID 2124 wrote to memory of 1408	2124	c33f95d255823028c943704727d2369e_JaffaCakes118.exe	83
PID 2124 wrote to memory of 1408	2124	c33f95d255823028c943704727d2369e_JaffaCakes118.exe	83
PID 2124 wrote to memory of 1408	2124	c33f95d255823028c943704727d2369e_JaffaCakes118.exe	83
PID 2124 wrote to memory of 1408	2124	c33f95d255823028c943704727d2369e_JaffaCakes118.exe	83
PID 1408 wrote to memory of 1360	1408	c33f95d255823028c943704727d2369e_JaffaCakes118.exe	84
PID 1408 wrote to memory of 1360	1408	c33f95d255823028c943704727d2369e_JaffaCakes118.exe	84
PID 1408 wrote to memory of 1360	1408	c33f95d255823028c943704727d2369e_JaffaCakes118.exe	84
PID 1408 wrote to memory of 1360	1408	c33f95d255823028c943704727d2369e_JaffaCakes118.exe	84
PID 1408 wrote to memory of 4064	1408	c33f95d255823028c943704727d2369e_JaffaCakes118.exe	85
PID 1408 wrote to memory of 4064	1408	c33f95d255823028c943704727d2369e_JaffaCakes118.exe	85
PID 1408 wrote to memory of 4064	1408	c33f95d255823028c943704727d2369e_JaffaCakes118.exe	85

C:\Users\Admin\AppData\Local\Temp\c33f95d255823028c943704727d2369e_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\c33f95d255823028c943704727d2369e_JaffaCakes118.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2124
- C:\Users\Admin\AppData\Local\Temp\c33f95d255823028c943704727d2369e_JaffaCakes118.exe
  "C:\Users\Admin\AppData\Local\Temp\c33f95d255823028c943704727d2369e_JaffaCakes118.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:1408
- - C:\Windows\SysWOW64\svchost.exe
    svchost.exe
    3⤵
    - System Location Discovery: System Language Discovery
    PID:1360
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 1360 -s 484
      4⤵
      Program crash
      PID:1576
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 1360 -s 492
      4⤵
      Program crash
      PID:228
- - C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
    "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe"
    3⤵
    PID:4064

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 184 -p 1360 -ip 1360
1⤵
PID:2716

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 504 -p 1360 -ip 1360
1⤵
PID:1228

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/1360-11-0x0000000010000000-0x000000001004B000-memory.dmp

Filesize
300KB

Download
memory/1360-13-0x0000000010000000-0x000000001004B000-memory.dmp

Filesize
300KB

Download
memory/1408-4-0x0000000010000000-0x000000001004B000-memory.dmp

Filesize
300KB

Download
memory/1408-6-0x0000000010000000-0x000000001004B000-memory.dmp

Filesize
300KB

Download
memory/1408-9-0x0000000010000000-0x000000001004B000-memory.dmp

Filesize
300KB

Download
memory/1408-8-0x0000000010000000-0x000000001004B000-memory.dmp

Filesize
300KB

Download
memory/1408-12-0x0000000010000000-0x000000001004B000-memory.dmp

Filesize
300KB

Download
memory/2124-0-0x0000000000400000-0x00000000007AE000-memory.dmp

Filesize
3.7MB

Download
memory/2124-10-0x0000000000400000-0x00000000007AE000-memory.dmp

Filesize
3.7MB

Download

Analysis

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