gh0strat | 804aabdeeb3a2b3b43d4783f47c89a6eb31f10eb2e024fa8885502618f1a2a77

General

Target

JaffaCakes118_63cccd30d58fd1635198ebedd10d5463.exe
Size

95KB
MD5

63cccd30d58fd1635198ebedd10d5463
SHA1

6f3ae60d19bf3764e80affcfe3d2257c1108b95e
SHA256

804aabdeeb3a2b3b43d4783f47c89a6eb31f10eb2e024fa8885502618f1a2a77
SHA512

ae68110d48c3d3ae037a9aec5cd22c06f6cfa724907b7b9b95d40279c99acb85071f22c4fac8825cf4986392a86dffa6d6ff84cf6b812783a9d66ea55aee9508
SSDEEP

1536:hG0qFusSx9qYMhdFHS8qdydo3nTzhYxJA+CwNUtBZVY9v8prDX6qlRBlF:hPwS4jHS8q/3nTzePCwNUh4E9DX1zF

Score

10^/10

gh0strat bootkit discovery persistence rat

Malware Config

Signatures

Gh0st RAT payload 2 IoCs

resource	yara_rule
behavioral1/files/0x000800000001707f-20.dat	family_gh0strat
behavioral1/memory/2704-22-0x0000000000400000-0x000000000044C610-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
2704	ghrychqjuw

Executes dropped EXE 1 IoCs

pid	Process
2704	ghrychqjuw

Loads dropped DLL 3 IoCs

pid	Process
2280	JaffaCakes118_63cccd30d58fd1635198ebedd10d5463.exe
2280	JaffaCakes118_63cccd30d58fd1635198ebedd10d5463.exe
2288	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\eyebttpcfe	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_63cccd30d58fd1635198ebedd10d5463.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	ghrychqjuw
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
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
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\ActiveMovie\devenum\Version = "7"	svchost.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
2704	ghrychqjuw
2288	svchost.exe
2288	svchost.exe

Suspicious use of AdjustPrivilegeToken 18 IoCs

description	pid	Process
Token: SeRestorePrivilege	2704	ghrychqjuw
Token: SeBackupPrivilege	2704	ghrychqjuw
Token: SeBackupPrivilege	2704	ghrychqjuw
Token: SeRestorePrivilege	2704	ghrychqjuw
Token: SeBackupPrivilege	2288	svchost.exe
Token: SeRestorePrivilege	2288	svchost.exe
Token: SeBackupPrivilege	2288	svchost.exe
Token: SeBackupPrivilege	2288	svchost.exe
Token: SeSecurityPrivilege	2288	svchost.exe
Token: SeSecurityPrivilege	2288	svchost.exe
Token: SeBackupPrivilege	2288	svchost.exe
Token: SeBackupPrivilege	2288	svchost.exe
Token: SeSecurityPrivilege	2288	svchost.exe
Token: SeBackupPrivilege	2288	svchost.exe
Token: SeBackupPrivilege	2288	svchost.exe
Token: SeSecurityPrivilege	2288	svchost.exe
Token: SeBackupPrivilege	2288	svchost.exe
Token: SeRestorePrivilege	2288	svchost.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2280 wrote to memory of 2704	2280	JaffaCakes118_63cccd30d58fd1635198ebedd10d5463.exe	31
PID 2280 wrote to memory of 2704	2280	JaffaCakes118_63cccd30d58fd1635198ebedd10d5463.exe	31
PID 2280 wrote to memory of 2704	2280	JaffaCakes118_63cccd30d58fd1635198ebedd10d5463.exe	31
PID 2280 wrote to memory of 2704	2280	JaffaCakes118_63cccd30d58fd1635198ebedd10d5463.exe	31

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_63cccd30d58fd1635198ebedd10d5463.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_63cccd30d58fd1635198ebedd10d5463.exe"
1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2280
- \??\c:\users\admin\appdata\local\ghrychqjuw
  "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_63cccd30d58fd1635198ebedd10d5463.exe" a -sc:\users\admin\appdata\local\temp\jaffacakes118_63cccd30d58fd1635198ebedd10d5463.exe
  2⤵
  - Deletes itself
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2704

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:2288

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%\koknn.cc3

Filesize
19.0MB

MD5
b6f9c2b86ca2d289ae7f14242e7a8238

SHA1
6b9a1fa3e13ab13ea7f0c8727370f2f8c0eaa580

SHA256
671a3f139dc899abb63f443fc3b2e700653a4839eacc61a484033438c996b526

SHA512
5b0a91b9e2d6fa98d0c6eae53ad419331f75ab32572aa81d0891a302c2a09eb8fe6bbc080834a44d14b296fb2b7751bbbcb21169211f58d24be5edfa2d5397e8

Download Submit
\Users\Admin\AppData\Local\ghrychqjuw

Filesize
20.7MB

MD5
1cfd4907fb9870b59fe32082035fd95e

SHA1
30caefe4067fbab7b15c1d75b5821917aa6f8298

SHA256
01f0ef49f6c32e1741ce32961b65cecdf6a30dd17cdc23673c0520d3877198ea

SHA512
aa60339e74a098dace5ed1032800697104f2e7a005863e16ec1d6952d918f4619bd25a0d43c6c292d8e0e5145f3643ffc03ea69407922711ba258fc8bfa7dc9c

Download Submit
memory/2280-2-0x0000000000030000-0x0000000000031000-memory.dmp

Filesize
4KB

Download
memory/2280-1-0x0000000000400000-0x000000000044C610-memory.dmp

Filesize
305KB

Download
memory/2280-13-0x00000000002C0000-0x000000000030D000-memory.dmp

Filesize
308KB

Download
memory/2280-12-0x0000000000400000-0x000000000044C610-memory.dmp

Filesize
305KB

Download
memory/2280-25-0x00000000002C0000-0x000000000030D000-memory.dmp

Filesize
308KB

Download
memory/2288-23-0x00000000000C0000-0x00000000000C1000-memory.dmp

Filesize
4KB

Download
memory/2704-15-0x0000000000400000-0x000000000044C610-memory.dmp

Filesize
305KB

Download
memory/2704-17-0x0000000000030000-0x0000000000031000-memory.dmp

Filesize
4KB

Download
memory/2704-22-0x0000000000400000-0x000000000044C610-memory.dmp

Filesize
305KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads