gh0strat | 38d9dfa2cbab55f4d4f182dd68a85c941e26d6484fd3d1952c7ad81c37f53928

General

Target

JaffaCakes118_6228e0bddca6629b077ea340bd142f31.exe
Size

95KB
MD5

6228e0bddca6629b077ea340bd142f31
SHA1

2c03ff3ed68866a2829e1fa46570e0955a385225
SHA256

38d9dfa2cbab55f4d4f182dd68a85c941e26d6484fd3d1952c7ad81c37f53928
SHA512

3180a05f1ad6129fe1276a904795d08b759f9bf097af45a6a122f3c027e99ccfa9d1303365a84fd1cab9f71bc62f3969e0a06a972c30358f14d086513aa433e9
SSDEEP

1536:fHFusSx9qYMhdFHS8qdydo3nTzhYxJA+CwNUtBZVY9v8prnMW5mb5EOc:fxS4jHS8q/3nTzePCwNUh4E9nWbGOc

Score

10^/10

gh0strat bootkit discovery persistence rat

Malware Config

Signatures

Gh0st RAT payload 2 IoCs

resource	yara_rule
behavioral1/files/0x0008000000015f4c-21.dat	family_gh0strat
behavioral1/memory/2008-24-0x0000000000400000-0x000000000044E348-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
2008	gqldkquunk

Executes dropped EXE 1 IoCs

pid	Process
2008	gqldkquunk

Loads dropped DLL 3 IoCs

pid	Process
2532	JaffaCakes118_6228e0bddca6629b077ea340bd142f31.exe
2532	JaffaCakes118_6228e0bddca6629b077ea340bd142f31.exe
2192	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\vrlhxvbhwg	svchost.exe
File created	C:\Windows\SysWOW64\vaabgydfkb	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_6228e0bddca6629b077ea340bd142f31.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	gqldkquunk
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	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
Key created	\REGISTRY\USER\.DEFAULT\Software	svchost.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft	svchost.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
2008	gqldkquunk
2192	svchost.exe
2192	svchost.exe

Suspicious use of AdjustPrivilegeToken 18 IoCs

description	pid	Process
Token: SeRestorePrivilege	2008	gqldkquunk
Token: SeBackupPrivilege	2008	gqldkquunk
Token: SeBackupPrivilege	2008	gqldkquunk
Token: SeRestorePrivilege	2008	gqldkquunk
Token: SeBackupPrivilege	2192	svchost.exe
Token: SeRestorePrivilege	2192	svchost.exe
Token: SeBackupPrivilege	2192	svchost.exe
Token: SeBackupPrivilege	2192	svchost.exe
Token: SeSecurityPrivilege	2192	svchost.exe
Token: SeSecurityPrivilege	2192	svchost.exe
Token: SeBackupPrivilege	2192	svchost.exe
Token: SeBackupPrivilege	2192	svchost.exe
Token: SeSecurityPrivilege	2192	svchost.exe
Token: SeBackupPrivilege	2192	svchost.exe
Token: SeBackupPrivilege	2192	svchost.exe
Token: SeSecurityPrivilege	2192	svchost.exe
Token: SeBackupPrivilege	2192	svchost.exe
Token: SeRestorePrivilege	2192	svchost.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2532 wrote to memory of 2008	2532	JaffaCakes118_6228e0bddca6629b077ea340bd142f31.exe	31
PID 2532 wrote to memory of 2008	2532	JaffaCakes118_6228e0bddca6629b077ea340bd142f31.exe	31
PID 2532 wrote to memory of 2008	2532	JaffaCakes118_6228e0bddca6629b077ea340bd142f31.exe	31
PID 2532 wrote to memory of 2008	2532	JaffaCakes118_6228e0bddca6629b077ea340bd142f31.exe	31

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6228e0bddca6629b077ea340bd142f31.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6228e0bddca6629b077ea340bd142f31.exe"
1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2532
- \??\c:\users\admin\appdata\local\gqldkquunk
  "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6228e0bddca6629b077ea340bd142f31.exe" a -sc:\users\admin\appdata\local\temp\jaffacakes118_6228e0bddca6629b077ea340bd142f31.exe
  2⤵
  - Deletes itself
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2008

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:2192

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%\xlysk.cc3

Filesize
20.0MB

MD5
276489d35fcf41f309af977d4021ff3b

SHA1
869dc6e5119fbf2737758d903f3394e088100e5b

SHA256
f01b63105e4d11f3f8382b30cf930a47d479b5633dabfb40d75302ad67b531bd

SHA512
aea8919717ed9e73c3c46b312413f9e99c9d79007f6d27b0d0f863383122da6af0f5bdb38b9a663a0319dce25a8c255b264b0796228538fc0f8d41836be710bc

Download Submit
\Users\Admin\AppData\Local\gqldkquunk

Filesize
20.2MB

MD5
c4fcb22e28be73cf345979b08eabe839

SHA1
5459816e8f6489e59b31041cbae1e1e69b774fc1

SHA256
5dc02e4412b91a20d20d32cbed03e85e89c59dfaddcfc49b1721587ebebcab2b

SHA512
96aaa56c09a907814d8b2d1c6f99229c9597ab7a02b5a9aec7347576b446992a7fcb527001e92c339ddf5f5dae54d250e27f9e44e3bd1f0f259cda69c499b98a

Download Submit
memory/2008-18-0x0000000000030000-0x0000000000031000-memory.dmp

Filesize
4KB

Download
memory/2008-17-0x0000000000400000-0x000000000044E348-memory.dmp

Filesize
312KB

Download
memory/2008-24-0x0000000000400000-0x000000000044E348-memory.dmp

Filesize
312KB

Download
memory/2192-25-0x0000000000240000-0x0000000000241000-memory.dmp

Filesize
4KB

Download
memory/2532-0-0x0000000000400000-0x000000000044E348-memory.dmp

Filesize
312KB

Download
memory/2532-2-0x0000000000030000-0x0000000000031000-memory.dmp

Filesize
4KB

Download
memory/2532-11-0x00000000002C0000-0x000000000030F000-memory.dmp

Filesize
316KB

Download
memory/2532-14-0x00000000002C0000-0x000000000030F000-memory.dmp

Filesize
316KB

Download
memory/2532-13-0x0000000000400000-0x000000000044E348-memory.dmp

Filesize
312KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads