gh0strat | b2a8985ba1dfeda1d470a3170bd0823c436db7bb7825b84ce9e05150ceb5d8a1

General

Target

cf1b9798a3d1b6925d354247a27ab0cc_JaffaCakes118.exe
Size

96KB
MD5

cf1b9798a3d1b6925d354247a27ab0cc
SHA1

a8e2cc17f6ca26664612109dfef9fb6b2d2bb170
SHA256

b2a8985ba1dfeda1d470a3170bd0823c436db7bb7825b84ce9e05150ceb5d8a1
SHA512

c829b950a9d057bc55afb99eeb8978c8aea8bde06b4c12d934bfc74678133e63fa5eb049ee1997aff1f076a4131d567208d6ae8cbd5056266ec0d08efb496d44
SSDEEP

1536:o0FusSx9qYMhdFHS8qdydo3nTzhYxJA+CwNUtBZVY9v8prK++VM4LxIf:oGS4jHS8q/3nTzePCwNUh4E9KnxIf

Score

10^/10

gh0strat bootkit discovery persistence rat

Malware Config

Signatures

Gh0st RAT payload 4 IoCs

resource	yara_rule
behavioral1/files/0x00090000000173f3-20.dat	family_gh0strat
behavioral1/memory/2428-22-0x0000000000400000-0x000000000044E2D4-memory.dmp	family_gh0strat
behavioral1/memory/2200-26-0x0000000020000000-0x0000000020027000-memory.dmp	family_gh0strat
behavioral1/memory/2200-28-0x0000000020000000-0x0000000020027000-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
2428	gmcnsygpqq

Executes dropped EXE 1 IoCs

pid	Process
2428	gmcnsygpqq

Loads dropped DLL 3 IoCs

pid	Process
2120	cf1b9798a3d1b6925d354247a27ab0cc_JaffaCakes118.exe
2120	cf1b9798a3d1b6925d354247a27ab0cc_JaffaCakes118.exe
2200	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\falvxinajm	svchost.exe

System Location Discovery: System Language Discovery 1 TTPs 2 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	cf1b9798a3d1b6925d354247a27ab0cc_JaffaCakes118.exe
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
2428	gmcnsygpqq
2200	svchost.exe
2200	svchost.exe

Suspicious use of AdjustPrivilegeToken 18 IoCs

description	pid	Process
Token: SeRestorePrivilege	2428	gmcnsygpqq
Token: SeBackupPrivilege	2428	gmcnsygpqq
Token: SeBackupPrivilege	2428	gmcnsygpqq
Token: SeRestorePrivilege	2428	gmcnsygpqq
Token: SeBackupPrivilege	2200	svchost.exe
Token: SeRestorePrivilege	2200	svchost.exe
Token: SeBackupPrivilege	2200	svchost.exe
Token: SeBackupPrivilege	2200	svchost.exe
Token: SeSecurityPrivilege	2200	svchost.exe
Token: SeSecurityPrivilege	2200	svchost.exe
Token: SeBackupPrivilege	2200	svchost.exe
Token: SeBackupPrivilege	2200	svchost.exe
Token: SeSecurityPrivilege	2200	svchost.exe
Token: SeBackupPrivilege	2200	svchost.exe
Token: SeBackupPrivilege	2200	svchost.exe
Token: SeSecurityPrivilege	2200	svchost.exe
Token: SeBackupPrivilege	2200	svchost.exe
Token: SeRestorePrivilege	2200	svchost.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2120 wrote to memory of 2428	2120	cf1b9798a3d1b6925d354247a27ab0cc_JaffaCakes118.exe	30
PID 2120 wrote to memory of 2428	2120	cf1b9798a3d1b6925d354247a27ab0cc_JaffaCakes118.exe	30
PID 2120 wrote to memory of 2428	2120	cf1b9798a3d1b6925d354247a27ab0cc_JaffaCakes118.exe	30
PID 2120 wrote to memory of 2428	2120	cf1b9798a3d1b6925d354247a27ab0cc_JaffaCakes118.exe	30

C:\Users\Admin\AppData\Local\Temp\cf1b9798a3d1b6925d354247a27ab0cc_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\cf1b9798a3d1b6925d354247a27ab0cc_JaffaCakes118.exe"
1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2120
- \??\c:\users\admin\appdata\local\gmcnsygpqq
  "C:\Users\Admin\AppData\Local\Temp\cf1b9798a3d1b6925d354247a27ab0cc_JaffaCakes118.exe" a -sc:\users\admin\appdata\local\temp\cf1b9798a3d1b6925d354247a27ab0cc_jaffacakes118.exe
  2⤵
  - Deletes itself
  - Executes dropped EXE
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2428

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:2200

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%\nvsqo.cc3

Filesize
23.0MB

MD5
ec1877a5b87fa15ff0253d1b2ba8c105

SHA1
de0940c7b359de226d4f6d256a26e3d515789b68

SHA256
2b8e6c58682097b1a46ed56c2c8eea6fda3fd8a7cca43f62d1b1761f5abd753d

SHA512
18df8d46445042cd2a3bf8283cc4db66461bf39354b16504b6e401daaf851eaf95babc651e3b8640cc23e79163f51845632d3dcc5a8017bac6296364569bb72a

Download Submit
\Users\Admin\AppData\Local\gmcnsygpqq

Filesize
23.4MB

MD5
9f0378b4ed3cee6328ee7ba927a3b248

SHA1
61c37883178e2822a1f8c18d8be3363f338acff9

SHA256
b9991beeb37ce65ba0358174a3a160b68902536533aaf1a037da5777b5993dbb

SHA512
ae9ba2055a0792a6bb93fab9d26100f9e2324a9f84601790b13564111af84ce656fa04e154f859acb766ee2aa977a87475a8ba244999586dc1780022ccbb22ba

Download Submit
memory/2120-13-0x0000000000230000-0x000000000027F000-memory.dmp

Filesize
316KB

Download
memory/2120-12-0x0000000000400000-0x000000000044E2D4-memory.dmp

Filesize
312KB

Download
memory/2120-2-0x0000000000030000-0x0000000000031000-memory.dmp

Filesize
4KB

Download
memory/2120-1-0x0000000000400000-0x000000000044E2D4-memory.dmp

Filesize
312KB

Download
memory/2120-24-0x0000000000230000-0x000000000027F000-memory.dmp

Filesize
316KB

Download
memory/2200-23-0x0000000000130000-0x0000000000131000-memory.dmp

Filesize
4KB

Download
memory/2200-26-0x0000000020000000-0x0000000020027000-memory.dmp

Filesize
156KB

Download
memory/2200-28-0x0000000020000000-0x0000000020027000-memory.dmp

Filesize
156KB

Download
memory/2428-17-0x0000000000030000-0x0000000000031000-memory.dmp

Filesize
4KB

Download
memory/2428-16-0x0000000000400000-0x000000000044E2D4-memory.dmp

Filesize
312KB

Download
memory/2428-22-0x0000000000400000-0x000000000044E2D4-memory.dmp

Filesize
312KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads