xtremerat | 40fda4ca6342e7bff03b1a55cf1414b9099b86a4beab4a65eedfdc98103c388d

General

Target

ea5b81ef79adb077ed832aae119fb0be_JaffaCakes118.exe
Size

344KB
MD5

ea5b81ef79adb077ed832aae119fb0be
SHA1

85078dda8bfe43db70d3cc85fb877a1fa5132f33
SHA256

40fda4ca6342e7bff03b1a55cf1414b9099b86a4beab4a65eedfdc98103c388d
SHA512

4a7783ffd50a669cc58b4b9d518648f8e4bfdb6399b555b231a5f0695c7d69aaad4b6ee28878e63e204d26a86818429b6d98647fa52586b87c3d18b180caf92d
SSDEEP

6144:SNW7mvIZNC7rGN3bkty0Mki8787O71rkhJSammcmZq:QW7SIa7rGNrkty0fkhAlmvq

Score

10^/10

xtremerat discovery persistence rat spyware upx

Malware Config

Signatures

Detect XtremeRAT payload 3 IoCs

resource	yara_rule
behavioral1/memory/2848-27-0x0000000010000000-0x000000001004D000-memory.dmp	family_xtremerat
behavioral1/memory/1524-28-0x0000000010000000-0x000000001004D000-memory.dmp	family_xtremerat
behavioral1/memory/2848-29-0x0000000010000000-0x000000001004D000-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

Executes dropped EXE 2 IoCs

pid	Process
1524	server.exe
2328	stub.exe

Loads dropped DLL 4 IoCs

pid	Process
3064	ea5b81ef79adb077ed832aae119fb0be_JaffaCakes118.exe
3064	ea5b81ef79adb077ed832aae119fb0be_JaffaCakes118.exe
3064	ea5b81ef79adb077ed832aae119fb0be_JaffaCakes118.exe
3064	ea5b81ef79adb077ed832aae119fb0be_JaffaCakes118.exe

UPX packed file 6 IoCs

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

upx

resource	yara_rule
behavioral1/memory/3064-11-0x0000000010000000-0x000000001004D000-memory.dmp	upx
behavioral1/memory/1524-15-0x0000000010000000-0x000000001004D000-memory.dmp	upx
behavioral1/files/0x00090000000120f9-13.dat	upx
behavioral1/memory/2848-27-0x0000000010000000-0x000000001004D000-memory.dmp	upx
behavioral1/memory/1524-28-0x0000000010000000-0x000000001004D000-memory.dmp	upx
behavioral1/memory/2848-29-0x0000000010000000-0x000000001004D000-memory.dmp	upx

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 4 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	ea5b81ef79adb077ed832aae119fb0be_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	server.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	stub.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
3064	ea5b81ef79adb077ed832aae119fb0be_JaffaCakes118.exe
2328	stub.exe

Suspicious use of WriteProcessMemory 18 IoCs

description	pid	Process	procid_target
PID 3064 wrote to memory of 1524	3064	ea5b81ef79adb077ed832aae119fb0be_JaffaCakes118.exe	30
PID 3064 wrote to memory of 1524	3064	ea5b81ef79adb077ed832aae119fb0be_JaffaCakes118.exe	30
PID 3064 wrote to memory of 1524	3064	ea5b81ef79adb077ed832aae119fb0be_JaffaCakes118.exe	30
PID 3064 wrote to memory of 1524	3064	ea5b81ef79adb077ed832aae119fb0be_JaffaCakes118.exe	30
PID 3064 wrote to memory of 2328	3064	ea5b81ef79adb077ed832aae119fb0be_JaffaCakes118.exe	31
PID 3064 wrote to memory of 2328	3064	ea5b81ef79adb077ed832aae119fb0be_JaffaCakes118.exe	31
PID 3064 wrote to memory of 2328	3064	ea5b81ef79adb077ed832aae119fb0be_JaffaCakes118.exe	31
PID 3064 wrote to memory of 2328	3064	ea5b81ef79adb077ed832aae119fb0be_JaffaCakes118.exe	31
PID 1524 wrote to memory of 2848	1524	server.exe	32
PID 1524 wrote to memory of 2848	1524	server.exe	32
PID 1524 wrote to memory of 2848	1524	server.exe	32
PID 1524 wrote to memory of 2848	1524	server.exe	32
PID 1524 wrote to memory of 2848	1524	server.exe	32
PID 1524 wrote to memory of 2748	1524	server.exe	33
PID 1524 wrote to memory of 2748	1524	server.exe	33
PID 1524 wrote to memory of 2748	1524	server.exe	33
PID 1524 wrote to memory of 2748	1524	server.exe	33
PID 1524 wrote to memory of 2748	1524	server.exe	33

C:\Users\Admin\AppData\Local\Temp\ea5b81ef79adb077ed832aae119fb0be_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\ea5b81ef79adb077ed832aae119fb0be_JaffaCakes118.exe"
1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3064
- C:\Users\Admin\AppData\Local\Temp\server.exe
  "C:\Users\Admin\AppData\Local\Temp\server.exe" 0
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:1524
- - C:\Windows\SysWOW64\svchost.exe
    svchost.exe
    3⤵
    - System Location Discovery: System Language Discovery
    PID:2848
- - C:\Program Files\Internet Explorer\iexplore.exe
    "C:\Program Files\Internet Explorer\iexplore.exe"
    3⤵
    PID:2748
- C:\Users\Admin\AppData\Local\Temp\stub.exe
  "C:\Users\Admin\AppData\Local\Temp\stub.exe" 0
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  PID:2328

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

C:\Users\Admin\AppData\Local\Temp\server.exe

Filesize
33KB

MD5
6ba9aeea2cfc136a045b3b4c291e85b5

SHA1
7d38a526512bb3bbf92225c25702753e6eaacecd

SHA256
161a15b89f83419c96cb73f83176e6845b51a682e3a39592639950880e35bca9

SHA512
c0d3bba772ab70a4491701b833fc151c79987a540e928b9d21e166a2029f73800d4a54e7bd533d17999b7fa3022c1fc064a63b1cbc56103a7278f492dca93f18

Download Submit
\Users\Admin\AppData\Local\Temp\stub.exe

Filesize
300KB

MD5
8a45fe85898666c75dc0ce2fd878d340

SHA1
8346d03c553a85c5046a154123adb1af454e3717

SHA256
47a6e501e51c466d43bb7638de421b4c30b80e24cdfeeedafab82b06ba41534a

SHA512
0941c2c170ce2a1991f301caad8a237cd67f5df972718acfe7b7b6c0beb5be0ba7bc817d21405b0981d90993aa6e725d4b4f76ac54686e47e299cf6fc396a1bb

Download Submit
memory/1524-15-0x0000000010000000-0x000000001004D000-memory.dmp

Filesize
308KB

Download
memory/1524-28-0x0000000010000000-0x000000001004D000-memory.dmp

Filesize
308KB

Download
memory/2328-23-0x0000000000220000-0x0000000000230000-memory.dmp

Filesize
64KB

Download
memory/2328-24-0x0000000000220000-0x0000000000230000-memory.dmp

Filesize
64KB

Download
memory/2848-27-0x0000000010000000-0x000000001004D000-memory.dmp

Filesize
308KB

Download
memory/2848-29-0x0000000010000000-0x000000001004D000-memory.dmp

Filesize
308KB

Download
memory/3064-11-0x0000000010000000-0x000000001004D000-memory.dmp

Filesize
308KB

Download
memory/3064-12-0x0000000010000000-0x000000001004D000-memory.dmp

Filesize
308KB

Download

Analysis

Sharing