gh0strat | 4b850978d0dd91f2e23a7dd125b94c45af3cac42c45943e1adbce9bf448627dc

General

Target

960cc2e9dfc91cd09dc11a458eee2796_JaffaCakes118.exe
Size

96KB
MD5

960cc2e9dfc91cd09dc11a458eee2796
SHA1

e64c2bfb409a7af9b8544ea392d45ef53c6e9c1c
SHA256

4b850978d0dd91f2e23a7dd125b94c45af3cac42c45943e1adbce9bf448627dc
SHA512

79958161accb75bcaa0578307ce769741493bb582800fc1ebf4b2aefbf557c4d8158349a90e078d99cdbb68758ab38283d8b8e7711f975d2c5f11c277c7af476
SSDEEP

1536:BAFusSx9qYMhdFHS8qdydo3nTzhYxJA+CwNUtBZVY9v8pru8jmyDK:ByS4jHS8q/3nTzePCwNUh4E9u8jmyW

Score

10^/10

gh0strat bootkit discovery persistence rat

Malware Config

Signatures

Gh0st RAT payload 3 IoCs

resource	yara_rule
behavioral1/files/0x0009000000016527-17.dat	family_gh0strat
behavioral1/memory/2408-20-0x0000000000400000-0x000000000044E464-memory.dmp	family_gh0strat
behavioral1/memory/2936-22-0x0000000020000000-0x0000000020027000-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

Deletes itself 1 IoCs

pid	Process
2408	ctuxkrwkdj

Executes dropped EXE 1 IoCs

pid	Process
2408	ctuxkrwkdj

Loads dropped DLL 2 IoCs

pid	Process
1496	960cc2e9dfc91cd09dc11a458eee2796_JaffaCakes118.exe
2936	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\ncnbqvvdia	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	960cc2e9dfc91cd09dc11a458eee2796_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	ctuxkrwkdj
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 value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	svchost.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	svchost.exe

Modifies data under HKEY_USERS 5 IoCs

description	ioc	Process
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
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\ActiveMovie\devenum	svchost.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
2408	ctuxkrwkdj
2936	svchost.exe
2936	svchost.exe
2936	svchost.exe

Suspicious use of AdjustPrivilegeToken 18 IoCs

description	pid	Process
Token: SeRestorePrivilege	2408	ctuxkrwkdj
Token: SeBackupPrivilege	2408	ctuxkrwkdj
Token: SeBackupPrivilege	2408	ctuxkrwkdj
Token: SeRestorePrivilege	2408	ctuxkrwkdj
Token: SeBackupPrivilege	2936	svchost.exe
Token: SeRestorePrivilege	2936	svchost.exe
Token: SeBackupPrivilege	2936	svchost.exe
Token: SeBackupPrivilege	2936	svchost.exe
Token: SeSecurityPrivilege	2936	svchost.exe
Token: SeSecurityPrivilege	2936	svchost.exe
Token: SeBackupPrivilege	2936	svchost.exe
Token: SeBackupPrivilege	2936	svchost.exe
Token: SeSecurityPrivilege	2936	svchost.exe
Token: SeBackupPrivilege	2936	svchost.exe
Token: SeBackupPrivilege	2936	svchost.exe
Token: SeSecurityPrivilege	2936	svchost.exe
Token: SeBackupPrivilege	2936	svchost.exe
Token: SeRestorePrivilege	2936	svchost.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 1496 wrote to memory of 2408	1496	960cc2e9dfc91cd09dc11a458eee2796_JaffaCakes118.exe	30
PID 1496 wrote to memory of 2408	1496	960cc2e9dfc91cd09dc11a458eee2796_JaffaCakes118.exe	30
PID 1496 wrote to memory of 2408	1496	960cc2e9dfc91cd09dc11a458eee2796_JaffaCakes118.exe	30
PID 1496 wrote to memory of 2408	1496	960cc2e9dfc91cd09dc11a458eee2796_JaffaCakes118.exe	30
PID 1496 wrote to memory of 2408	1496	960cc2e9dfc91cd09dc11a458eee2796_JaffaCakes118.exe	30
PID 1496 wrote to memory of 2408	1496	960cc2e9dfc91cd09dc11a458eee2796_JaffaCakes118.exe	30
PID 1496 wrote to memory of 2408	1496	960cc2e9dfc91cd09dc11a458eee2796_JaffaCakes118.exe	30

C:\Users\Admin\AppData\Local\Temp\960cc2e9dfc91cd09dc11a458eee2796_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\960cc2e9dfc91cd09dc11a458eee2796_JaffaCakes118.exe"
1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1496
- \??\c:\users\admin\appdata\local\ctuxkrwkdj
  "C:\Users\Admin\AppData\Local\Temp\960cc2e9dfc91cd09dc11a458eee2796_JaffaCakes118.exe" a -sc:\users\admin\appdata\local\temp\960cc2e9dfc91cd09dc11a458eee2796_jaffacakes118.exe
  2⤵
  - Deletes itself
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2408

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:2936

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%\yychh.cc3

Filesize
19.0MB

MD5
6406ee9bc0fcfba53e27c7997c5f5284

SHA1
5b78c2f8f3e52eaf74f3dabaf83729208c4e8e43

SHA256
64b24e691425bc5d1a5123fd05809573349116e36282a5fa61515fff66e07ebb

SHA512
16bb2bd4329e605fd9ef0ba1da4318193987de802f88d8bcba4373169bc9ea8491ddacc8e28c3100a015bd686efc19a05416b1521c6aa312cc6a2ae0f3884fd9

Download Submit
\Users\Admin\AppData\Local\ctuxkrwkdj

Filesize
23.1MB

MD5
9f939199f3210b347bccd269a5e616be

SHA1
a2738b23c7fcef7fab0de0849cf95ef40c1e3c4e

SHA256
32f758228c22449ca4f2e9945e9b529ae324d0e06fbb4697de8fcc33c887bdf7

SHA512
b8dce9b2414bdd432fb914e1e923777fe4d7767d76fc0ab9d55421707c2d3dcea5a7fad4db4da9f7cda3d652842bb1e2d668215569b401b9aeb8c5534d9d6add

Download Submit
memory/1496-0-0x0000000000400000-0x000000000044E464-memory.dmp

Filesize
313KB

Download
memory/1496-2-0x00000000001C0000-0x000000000020F000-memory.dmp

Filesize
316KB

Download
memory/1496-3-0x00000000001C0000-0x000000000020F000-memory.dmp

Filesize
316KB

Download
memory/1496-11-0x0000000000400000-0x000000000044E464-memory.dmp

Filesize
313KB

Download
memory/2408-12-0x0000000000400000-0x000000000044E464-memory.dmp

Filesize
313KB

Download
memory/2408-20-0x0000000000400000-0x000000000044E464-memory.dmp

Filesize
313KB

Download
memory/2936-21-0x0000000000230000-0x0000000000231000-memory.dmp

Filesize
4KB

Download
memory/2936-22-0x0000000020000000-0x0000000020027000-memory.dmp

Filesize
156KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads