gh0strat | 2dab9d1dad41a8f0428ee783e98c8ba299e6fd8420e578bd3fbecc5d2ca0fe5a

General

Target

JaffaCakes118_4ff60eef0ac253e4c4f2daecfd5980df.exe
Size

22.7MB
MD5

4ff60eef0ac253e4c4f2daecfd5980df
SHA1

a7a6d4f7b33dab45a82cffc6e3f9357a0f79d174
SHA256

2dab9d1dad41a8f0428ee783e98c8ba299e6fd8420e578bd3fbecc5d2ca0fe5a
SHA512

f4a8bfcfee5a27b3b844b5e6c6e938554b7ebf6b403f02e796c5b4a5950afa7473dc33887784ba6a4fa2a3dcbe77ea8880d692c8da768f060cd62e87341b64bb
SSDEEP

3072:BKSqXrJnWqbwOuVQYVlydB7RhXJmyhQtsbGCV9OawNqddkTNAPYT5g7yQgTatp:lUrJnWqbHZRh5HhiIGZaDdkTNAPYm7gw

Score

10^/10

gh0strat bootkit discovery persistence rat

Malware Config

Signatures

Gh0st RAT payload 3 IoCs

resource	yara_rule
behavioral1/files/0x0009000000014bf3-11.dat	family_gh0strat
behavioral1/memory/2728-15-0x0000000020000000-0x0000000020027000-memory.dmp	family_gh0strat
behavioral1/memory/2728-17-0x0000000020000000-0x0000000020027000-memory.dmp	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
2136	hnyrrvmcvv

Executes dropped EXE 1 IoCs

pid	Process
2136	hnyrrvmcvv

Loads dropped DLL 3 IoCs

pid	Process
2640	JaffaCakes118_4ff60eef0ac253e4c4f2daecfd5980df.exe
2640	JaffaCakes118_4ff60eef0ac253e4c4f2daecfd5980df.exe
2728	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\sudwawjhev	svchost.exe

Drops file in Program Files directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Program Files (x86)\WinRAR\Formats\Date\Q%SESSIONNAME%\oqloq.cc3	hnyrrvmcvv

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_4ff60eef0ac253e4c4f2daecfd5980df.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	hnyrrvmcvv
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 6 IoCs

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

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
2136	hnyrrvmcvv
2728	svchost.exe
2728	svchost.exe

Suspicious use of AdjustPrivilegeToken 18 IoCs

description	pid	Process
Token: SeRestorePrivilege	2136	hnyrrvmcvv
Token: SeBackupPrivilege	2136	hnyrrvmcvv
Token: SeBackupPrivilege	2136	hnyrrvmcvv
Token: SeRestorePrivilege	2136	hnyrrvmcvv
Token: SeBackupPrivilege	2728	svchost.exe
Token: SeRestorePrivilege	2728	svchost.exe
Token: SeBackupPrivilege	2728	svchost.exe
Token: SeBackupPrivilege	2728	svchost.exe
Token: SeSecurityPrivilege	2728	svchost.exe
Token: SeSecurityPrivilege	2728	svchost.exe
Token: SeBackupPrivilege	2728	svchost.exe
Token: SeBackupPrivilege	2728	svchost.exe
Token: SeSecurityPrivilege	2728	svchost.exe
Token: SeBackupPrivilege	2728	svchost.exe
Token: SeBackupPrivilege	2728	svchost.exe
Token: SeSecurityPrivilege	2728	svchost.exe
Token: SeBackupPrivilege	2728	svchost.exe
Token: SeRestorePrivilege	2728	svchost.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2640 wrote to memory of 2136	2640	JaffaCakes118_4ff60eef0ac253e4c4f2daecfd5980df.exe	28
PID 2640 wrote to memory of 2136	2640	JaffaCakes118_4ff60eef0ac253e4c4f2daecfd5980df.exe	28
PID 2640 wrote to memory of 2136	2640	JaffaCakes118_4ff60eef0ac253e4c4f2daecfd5980df.exe	28
PID 2640 wrote to memory of 2136	2640	JaffaCakes118_4ff60eef0ac253e4c4f2daecfd5980df.exe	28

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_4ff60eef0ac253e4c4f2daecfd5980df.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_4ff60eef0ac253e4c4f2daecfd5980df.exe"
1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2640
- \??\c:\users\admin\appdata\local\hnyrrvmcvv
  "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_4ff60eef0ac253e4c4f2daecfd5980df.exe" a -sc:\users\admin\appdata\local\temp\jaffacakes118_4ff60eef0ac253e4c4f2daecfd5980df.exe
  2⤵
  - Deletes itself
  - Executes dropped EXE
  - Drops file in Program Files directory
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2136

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:2728

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:\program files (x86)\winrar\formats\date\q%sessionname%\oqloq.cc3

Filesize
20.0MB

MD5
c287ac5eb6413f14ad439f7cacc0a053

SHA1
0d2778dad4cc16ef6fc0735d8c64764d2683b609

SHA256
f6bc33d683c16e8eb59c4cce583afcd943aafa743bc854b1fc5d5cd6be82a62e

SHA512
d03f4a3e77a3a7c9035d6e5fc4be3b406012d860b1cc4a4d5068e4ec879bc57896f9704c46e4a65048484bf40242073ce44f677da33bff4a694b7b26cb1c59fe

Download Submit
\Users\Admin\AppData\Local\hnyrrvmcvv

Filesize
22.7MB

MD5
dc60c532776d49790c424870f7844fbc

SHA1
8f30b70417c8be7b16812fe3f5aad1385251fa3b

SHA256
81cf84ea03f513df2ee77d7df8364c4701a77dd681b2fd159d8323b716eece59

SHA512
8ccd1240b2563f0f049005c2e56a574b4c361b94a7c8db23dc1884426176e7e58e7c3e443767af4a1d622bd67284a18b7e47caafb72ba137b0517553798bed2c

Download Submit
memory/2728-13-0x0000000000180000-0x0000000000181000-memory.dmp

Filesize
4KB

Download
memory/2728-15-0x0000000020000000-0x0000000020027000-memory.dmp

Filesize
156KB

Download
memory/2728-17-0x0000000020000000-0x0000000020027000-memory.dmp

Filesize
156KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads