xtremerat | 54114739ad70292c0841ea3c00e4bdaf6e9cf15afa73a08b9d54c337ad793c6d

General

Target

b44191c3c9dcb4646e53494ee3afa7e8_JaffaCakes118.exe
Size

423KB
MD5

b44191c3c9dcb4646e53494ee3afa7e8
SHA1

4e7503770f9a562f5790c35b1317775f8fb72c99
SHA256

54114739ad70292c0841ea3c00e4bdaf6e9cf15afa73a08b9d54c337ad793c6d
SHA512

d520c6799a7c575430537d865057bd331f7a61cf10c1f9dc4cbd717c06c84ea6dacb54b991e79880bb0dbc19f86f253df9290e03bba13384f8bdbf6074272030
SSDEEP

6144:+VkTJYpohmgLTfL2POVBJyIxKIw6RL1DLO2+Ibsuj4cbT37W3vdl6bIIq+qJW3Nx:gstxoa1DLwcJEj/L6bIbACo7

Score

10^/10

xtremerat discovery persistence rat spyware upx

Malware Config

Extracted

Family

xtremerat

C2

emchiyeuminhanh.no-ip.org

Signatures

Detect XtremeRAT payload 4 IoCs

resource	yara_rule
behavioral2/memory/4240-19-0x0000000000C80000-0x0000000000C96000-memory.dmp	family_xtremerat
behavioral2/memory/4140-18-0x0000000000C80000-0x0000000000C96000-memory.dmp	family_xtremerat
behavioral2/memory/1540-21-0x0000000000C80000-0x0000000000C96000-memory.dmp	family_xtremerat
behavioral2/memory/4240-22-0x0000000000C80000-0x0000000000C96000-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

Boot or Logon Autostart Execution: Active Setup 2 TTPs 2 IoCs

Adversaries may achieve persistence by adding a Registry key to the Active Setup of the local machine.

persistence

Active Setup

T1547.014

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\MACHINE\Software\WOW6432Node\Microsoft\Active Setup\Installed Components\{5460C4DF-B266-909E-CB58-E32B79832EB2}	dieukhien.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{5460C4DF-B266-909E-CB58-E32B79832EB2}\StubPath = "C:\\Windows\\InstallDir\\Serv3r.exe restart"	dieukhien.exe

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-4050598569-1597076380-177084960-1000\Control Panel\International\Geo\Nation	b44191c3c9dcb4646e53494ee3afa7e8_JaffaCakes118.exe

Executes dropped EXE 1 IoCs

pid	Process
1540	dieukhien.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\HKLM = "C:\\Windows\\InstallDir\\Serv3r.exe"	dieukhien.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-4050598569-1597076380-177084960-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\HKCU = "C:\\Windows\\InstallDir\\Serv3r.exe"	dieukhien.exe

UPX packed file 6 IoCs

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

upx

resource	yara_rule
behavioral2/files/0x0008000000023cdd-4.dat	upx
behavioral2/memory/1540-11-0x0000000000C80000-0x0000000000C96000-memory.dmp	upx
behavioral2/memory/4240-19-0x0000000000C80000-0x0000000000C96000-memory.dmp	upx
behavioral2/memory/4140-18-0x0000000000C80000-0x0000000000C96000-memory.dmp	upx
behavioral2/memory/1540-21-0x0000000000C80000-0x0000000000C96000-memory.dmp	upx
behavioral2/memory/4240-22-0x0000000000C80000-0x0000000000C96000-memory.dmp	upx

Drops file in Windows directory 3 IoCs

description	ioc	Process
File opened for modification	C:\Windows\InstallDir\Serv3r.exe	dieukhien.exe
File created	C:\Windows\InstallDir\Serv3r.exe	dieukhien.exe
File opened for modification	C:\Windows\InstallDir\	dieukhien.exe

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	b44191c3c9dcb4646e53494ee3afa7e8_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	dieukhien.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	explorer.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	explorer.exe

Suspicious use of WriteProcessMemory 13 IoCs

description	pid	Process	procid_target
PID 5072 wrote to memory of 1540	5072	b44191c3c9dcb4646e53494ee3afa7e8_JaffaCakes118.exe	84
PID 5072 wrote to memory of 1540	5072	b44191c3c9dcb4646e53494ee3afa7e8_JaffaCakes118.exe	84
PID 5072 wrote to memory of 1540	5072	b44191c3c9dcb4646e53494ee3afa7e8_JaffaCakes118.exe	84
PID 1540 wrote to memory of 4616	1540	dieukhien.exe	85
PID 1540 wrote to memory of 4616	1540	dieukhien.exe	85
PID 1540 wrote to memory of 4240	1540	dieukhien.exe	86
PID 1540 wrote to memory of 4240	1540	dieukhien.exe	86
PID 1540 wrote to memory of 4240	1540	dieukhien.exe	86
PID 1540 wrote to memory of 4140	1540	dieukhien.exe	87
PID 1540 wrote to memory of 4140	1540	dieukhien.exe	87
PID 1540 wrote to memory of 4140	1540	dieukhien.exe	87
PID 1540 wrote to memory of 4140	1540	dieukhien.exe	87
PID 1540 wrote to memory of 4240	1540	dieukhien.exe	86

C:\Users\Admin\AppData\Local\Temp\b44191c3c9dcb4646e53494ee3afa7e8_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\b44191c3c9dcb4646e53494ee3afa7e8_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:5072
- C:\Users\Admin\AppData\Local\Temp\dieukhien.exe
  "C:\Users\Admin\AppData\Local\Temp\dieukhien.exe"
  2⤵
  - Boot or Logon Autostart Execution: Active Setup
  - Executes dropped EXE
  - Adds Run key to start application
  - Drops file in Windows directory
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:1540
- - C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
    "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe"
    3⤵
    PID:4616
- - C:\Windows\SysWOW64\explorer.exe
    explorer.exe
    3⤵
    - System Location Discovery: System Language Discovery
    PID:4240
- - C:\Windows\SysWOW64\explorer.exe
    explorer.exe
    3⤵
    - System Location Discovery: System Language Discovery
    PID:4140

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

2

T1547

Active Setup

1

T1547.014

Registry Run Keys / Startup Folder

1

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

2

T1547

Active Setup

1

T1547.014

Registry Run Keys / Startup Folder

1

T1547.001

Defense Evasion

Modify Registry

2

T1112

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

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\Local\Temp\dieukhien.exe

Filesize
21KB

MD5
c7ce5ef12e6ad375a56fa72198a93a0b

SHA1
58e42309f060ab138b69c3add5e11b18f471a503

SHA256
f35e31591a35ab98493c739494fffd6f5adfeea58c8ac590c9502429e61f9af5

SHA512
be42a464d59245a9113461ae35e7367162e9ad6bffe13b7f732ff30f32432bf1c94b490cbe1293ab2fae68c7ceb79b0973829eada59cd38254358ac3e9892c5a

Download Submit
memory/1540-11-0x0000000000C80000-0x0000000000C96000-memory.dmp

Filesize
88KB

Download
memory/1540-21-0x0000000000C80000-0x0000000000C96000-memory.dmp

Filesize
88KB

Download
memory/4140-18-0x0000000000C80000-0x0000000000C96000-memory.dmp

Filesize
88KB

Download
memory/4240-19-0x0000000000C80000-0x0000000000C96000-memory.dmp

Filesize
88KB

Download
memory/4240-22-0x0000000000C80000-0x0000000000C96000-memory.dmp

Filesize
88KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads