gh0strat | f50b0423cd9bf16be4dcff1a1243a0f76fcd32eb390a8e96fa131020b26c06d8

General

Target

JaffaCakes118_3777d234f4dc8eb3ffc3510d9629ae94.exe
Size

96KB
MD5

3777d234f4dc8eb3ffc3510d9629ae94
SHA1

4d320ed4a06ceb9079684fa41af143d39a3794ef
SHA256

f50b0423cd9bf16be4dcff1a1243a0f76fcd32eb390a8e96fa131020b26c06d8
SHA512

e2c73034a28f818558233d33d195ba0aff4ed7fb4b48ed6bcfa405d6dca05033a7f46ef060ea05998319858ce2781e9f097b6724443c59de07481a929514337a
SSDEEP

1536:Z1FusSx9qYMhdFHS8qdydo3nTzhYxJA+CwNUtBZVY9v8prGoq64BL:ZbS4jHS8q/3nTzePCwNUh4E9Gl/BL

Score

10^/10

gh0strat bootkit discovery persistence rat

Malware Config

Signatures

Gh0st RAT payload 4 IoCs

resource	yara_rule
behavioral1/files/0x00080000000193d9-18.dat	family_gh0strat
behavioral1/memory/2796-20-0x0000000000400000-0x000000000044E2F8-memory.dmp	family_gh0strat
behavioral1/memory/2748-23-0x0000000020000000-0x0000000020027000-memory.dmp	family_gh0strat
behavioral1/memory/2748-25-0x0000000020000000-0x0000000020027000-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
2796	iyyfjkujyu

Executes dropped EXE 1 IoCs

pid	Process
2796	iyyfjkujyu

Loads dropped DLL 3 IoCs

pid	Process
2380	JaffaCakes118_3777d234f4dc8eb3ffc3510d9629ae94.exe
2380	JaffaCakes118_3777d234f4dc8eb3ffc3510d9629ae94.exe
2748	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 2 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\dstxyvmxrr	svchost.exe
File created	C:\Windows\SysWOW64\dbiqhypvfm	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	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_3777d234f4dc8eb3ffc3510d9629ae94.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	iyyfjkujyu

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
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
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 3 IoCs

pid	Process
2796	iyyfjkujyu
2748	svchost.exe
2748	svchost.exe

Suspicious use of AdjustPrivilegeToken 18 IoCs

description	pid	Process
Token: SeRestorePrivilege	2796	iyyfjkujyu
Token: SeBackupPrivilege	2796	iyyfjkujyu
Token: SeBackupPrivilege	2796	iyyfjkujyu
Token: SeRestorePrivilege	2796	iyyfjkujyu
Token: SeBackupPrivilege	2748	svchost.exe
Token: SeRestorePrivilege	2748	svchost.exe
Token: SeBackupPrivilege	2748	svchost.exe
Token: SeBackupPrivilege	2748	svchost.exe
Token: SeSecurityPrivilege	2748	svchost.exe
Token: SeSecurityPrivilege	2748	svchost.exe
Token: SeBackupPrivilege	2748	svchost.exe
Token: SeBackupPrivilege	2748	svchost.exe
Token: SeSecurityPrivilege	2748	svchost.exe
Token: SeBackupPrivilege	2748	svchost.exe
Token: SeBackupPrivilege	2748	svchost.exe
Token: SeSecurityPrivilege	2748	svchost.exe
Token: SeBackupPrivilege	2748	svchost.exe
Token: SeRestorePrivilege	2748	svchost.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2380 wrote to memory of 2796	2380	JaffaCakes118_3777d234f4dc8eb3ffc3510d9629ae94.exe	30
PID 2380 wrote to memory of 2796	2380	JaffaCakes118_3777d234f4dc8eb3ffc3510d9629ae94.exe	30
PID 2380 wrote to memory of 2796	2380	JaffaCakes118_3777d234f4dc8eb3ffc3510d9629ae94.exe	30
PID 2380 wrote to memory of 2796	2380	JaffaCakes118_3777d234f4dc8eb3ffc3510d9629ae94.exe	30

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_3777d234f4dc8eb3ffc3510d9629ae94.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_3777d234f4dc8eb3ffc3510d9629ae94.exe"
1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2380
- \??\c:\users\admin\appdata\local\iyyfjkujyu
  "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_3777d234f4dc8eb3ffc3510d9629ae94.exe" a -sc:\users\admin\appdata\local\temp\jaffacakes118_3777d234f4dc8eb3ffc3510d9629ae94.exe
  2⤵
  - Deletes itself
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2796

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:2748

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%\xnbdf.cc3

Filesize
24.1MB

MD5
5027558fbc3feeec0a264fca78cda43d

SHA1
3d684a63c7c2ac63347d50a2eb29eba586abdeac

SHA256
208781353a875fba26268396274475e689520f400b190e9cbc410ec17ef25eed

SHA512
c335ba65f6f1ac56d28e6e0280800a81eef96d186bb189d195478acf5459bb14173680838eb1ba56ef9539531fe950965fdc3fc9b1dad6e15bcb7dea97def961

Download Submit
\Users\Admin\AppData\Local\iyyfjkujyu

Filesize
21.2MB

MD5
f5ed71bf3dde80d26b0c14032b7a03e3

SHA1
43827e2017371dd60346b1958b7d6495af054f2b

SHA256
a98c0eb1f3a39d1fdaa88d1bfbbe80193e4a91eb7440b2106c049506742b9582

SHA512
7da4024d9c63a0c8275673cceea6d3f018b3e2fc8f98a17bdabc2aad42d3612f769e002bb8edac5f299af2c7d6cc2d12d03b2442c7dd0e0653b1dcc0c76a90cd

Download Submit
memory/2380-2-0x0000000000030000-0x0000000000031000-memory.dmp

Filesize
4KB

Download
memory/2380-1-0x0000000000400000-0x000000000044E2F8-memory.dmp

Filesize
312KB

Download
memory/2380-11-0x0000000000400000-0x000000000044E2F8-memory.dmp

Filesize
312KB

Download
memory/2748-21-0x00000000001B0000-0x00000000001B1000-memory.dmp

Filesize
4KB

Download
memory/2748-23-0x0000000020000000-0x0000000020027000-memory.dmp

Filesize
156KB

Download
memory/2748-25-0x0000000020000000-0x0000000020027000-memory.dmp

Filesize
156KB

Download
memory/2796-15-0x0000000000030000-0x0000000000031000-memory.dmp

Filesize
4KB

Download
memory/2796-14-0x0000000000400000-0x000000000044E2F8-memory.dmp

Filesize
312KB

Download
memory/2796-20-0x0000000000400000-0x000000000044E2F8-memory.dmp

Filesize
312KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads