gh0strat | 6047cc605e0dfbee45f75d3aa49fc2f901cf1e3be1c356d02c416e9fa8ed1278

General

Target

JaffaCakes118_4cb85dc70ca46ce70499d1a8142f0f20.exe
Size

196KB
MD5

4cb85dc70ca46ce70499d1a8142f0f20
SHA1

79665c3a585de51d9b9853f902b11d0f2a3efa45
SHA256

6047cc605e0dfbee45f75d3aa49fc2f901cf1e3be1c356d02c416e9fa8ed1278
SHA512

7f92d77ad9261e40ac0885f8d0719dbe25b2ce8b51976e126b7695d590d9630403f542176b7eba4c876e7188ebcdbaf10bd89da7ba0119c8030ed8eee30f1619
SSDEEP

3072:Vgmn0avOvtYz4nqSioDXx4uE9w2qbMUeZPgrQ/O/46x4M15m:+w0avOvtYSiod4uYzqAvZd/246Hvm

Score

10^/10

gh0strat bootkit discovery persistence rat

Malware Config

Signatures

Gh0st RAT payload 1 IoCs

resource	yara_rule
behavioral1/files/0x00080000000186d9-11.dat	family_gh0strat

Gh0strat
Gh0st RAT is a remote access tool (RAT) with its source code public and it has been used by multiple Chinese groups.
rat gh0strat
Gh0strat family
gh0strat

Deletes itself 1 IoCs

pid	Process
1084	fxwqpqpfwg

Executes dropped EXE 1 IoCs

pid	Process
1084	fxwqpqpfwg

Loads dropped DLL 3 IoCs

pid	Process
1756	JaffaCakes118_4cb85dc70ca46ce70499d1a8142f0f20.exe
1756	JaffaCakes118_4cb85dc70ca46ce70499d1a8142f0f20.exe
2420	svchost.exe

Writes to the Master Boot Record (MBR) 1 TTPs 1 IoCs

Bootkits write to the MBR to gain persistence at a level below the operating system.

bootkit persistence

Bootkit

T1542.003

description	ioc	Process
File opened for modification	\??\PhysicalDrive0	svchost.exe

Drops file in System32 directory 1 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\crfdeifbcp	svchost.exe

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_4cb85dc70ca46ce70499d1a8142f0f20.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	fxwqpqpfwg
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe

Checks processor information in registry 2 TTPs 2 IoCs

Processor information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	svchost.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	svchost.exe

Modifies data under HKEY_USERS 5 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\ActiveMovie\devenum	svchost.exe
Key created	\REGISTRY\USER\.DEFAULT\Software	svchost.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft	svchost.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\ActiveMovie	svchost.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\ActiveMovie\devenum\Version = "7"	svchost.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
1084	fxwqpqpfwg
2420	svchost.exe
2420	svchost.exe

Suspicious use of AdjustPrivilegeToken 18 IoCs

description	pid	Process
Token: SeRestorePrivilege	1084	fxwqpqpfwg
Token: SeBackupPrivilege	1084	fxwqpqpfwg
Token: SeBackupPrivilege	1084	fxwqpqpfwg
Token: SeRestorePrivilege	1084	fxwqpqpfwg
Token: SeBackupPrivilege	2420	svchost.exe
Token: SeRestorePrivilege	2420	svchost.exe
Token: SeBackupPrivilege	2420	svchost.exe
Token: SeBackupPrivilege	2420	svchost.exe
Token: SeSecurityPrivilege	2420	svchost.exe
Token: SeSecurityPrivilege	2420	svchost.exe
Token: SeBackupPrivilege	2420	svchost.exe
Token: SeBackupPrivilege	2420	svchost.exe
Token: SeSecurityPrivilege	2420	svchost.exe
Token: SeBackupPrivilege	2420	svchost.exe
Token: SeBackupPrivilege	2420	svchost.exe
Token: SeSecurityPrivilege	2420	svchost.exe
Token: SeBackupPrivilege	2420	svchost.exe
Token: SeRestorePrivilege	2420	svchost.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 1756 wrote to memory of 1084	1756	JaffaCakes118_4cb85dc70ca46ce70499d1a8142f0f20.exe	29
PID 1756 wrote to memory of 1084	1756	JaffaCakes118_4cb85dc70ca46ce70499d1a8142f0f20.exe	29
PID 1756 wrote to memory of 1084	1756	JaffaCakes118_4cb85dc70ca46ce70499d1a8142f0f20.exe	29
PID 1756 wrote to memory of 1084	1756	JaffaCakes118_4cb85dc70ca46ce70499d1a8142f0f20.exe	29

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_4cb85dc70ca46ce70499d1a8142f0f20.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_4cb85dc70ca46ce70499d1a8142f0f20.exe"
1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1756
- \??\c:\users\admin\appdata\local\fxwqpqpfwg
  "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_4cb85dc70ca46ce70499d1a8142f0f20.exe" a -sc:\users\admin\appdata\local\temp\jaffacakes118_4cb85dc70ca46ce70499d1a8142f0f20.exe
  2⤵
  - Deletes itself
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1084

C:\Windows\SysWOW64\svchost.exe
C:\Windows\SysWOW64\svchost.exe -k netsvcs
1⤵
- Loads dropped DLL
- Writes to the Master Boot Record (MBR)
- Drops file in System32 directory
- System Location Discovery: System Language Discovery
- Checks processor information in registry
- Modifies data under HKEY_USERS
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:2420

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Pre-OS Boot

1

T1542

Bootkit

1

T1542.003

Privilege Escalation

Defense Evasion

Pre-OS Boot

1

T1542

Bootkit

1

T1542.003

Credential Access

Discovery

Query Registry

1

T1012

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:\programdata\application data\storm\update\%sessionname%\gdtrc.cc3

Filesize
21.0MB

MD5
7e43e1a8b6ed4d02f0c0a8a65ee2310d

SHA1
144e4a3182dbdee19218561f649d56901a9e6818

SHA256
6f1e10e007706799028d695386406b514372af886772e0a6b8b088f0181b1f7e

SHA512
da079de4ba9c161918e4a1f355be419316bcaf44b5f115dc13c805411667f1664831bbd9be69d7a745fd23767fcc26d9f41c75fa20fe1daf5dee33c6d85795a1

Download Submit
\Users\Admin\AppData\Local\fxwqpqpfwg

Filesize
23.2MB

MD5
af31c6458e5f12700200884dfaddfc38

SHA1
0ddc043132c0d960a910250a4571e50b4974fd7a

SHA256
7a44a668fbf00787f106bfcdcb869f485631d6744a6937f4deb880695392cb8b

SHA512
ac7d6680a2962529af5e3bff701ff946b19592e72ee63ec7f95219ec91d55d76cdb3cd8e31bf0b866a69a0ead47ff872c263a9238bd9f2782ca01a0f2fb48563

Download Submit
memory/2420-13-0x0000000000160000-0x0000000000161000-memory.dmp

Filesize
4KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads