gh0strat | c297e02f804f7c95762ada2efb98866c6a509db4ace8bf06f95af3a41c8e702c

General

Target

1eaae465bda927c1893a5744301cde9b.exe
Size

844KB
MD5

1eaae465bda927c1893a5744301cde9b
SHA1

6d5f62d54dda0a61f5f7a8b2cbbff86cf2ac2ae9
SHA256

c297e02f804f7c95762ada2efb98866c6a509db4ace8bf06f95af3a41c8e702c
SHA512

76a20258f1c43f620ad8f66916192c1a33c48ec2f4594107ad987088da3a500bff5ea5d3cd3954457aee09b2c44c36530cf00518398caf0c756f48b7b0aa7819
SSDEEP

12288:VCQjgAtAHM+vetZxF5EWry8AJGy0/X+tMLNjG6pgt6cBUl48ij/ePdEkHwicLMdB:V5ZWs+OZVEWry8AFaNj5E6wUmx0pp

Score

10^/10

Malware Config

Signatures

Gh0st RAT payload 7 IoCs

resource	yara_rule
behavioral2/memory/4544-19-0x0000000010000000-0x0000000010362000-memory.dmp	family_gh0strat
behavioral2/memory/4544-20-0x0000000010000000-0x0000000010362000-memory.dmp	family_gh0strat
behavioral2/memory/220-45-0x0000000010000000-0x0000000010362000-memory.dmp	family_gh0strat
behavioral2/memory/220-44-0x0000000010000000-0x0000000010362000-memory.dmp	family_gh0strat
behavioral2/memory/4876-64-0x0000000010000000-0x0000000010362000-memory.dmp	family_gh0strat
behavioral2/memory/4876-65-0x0000000010000000-0x0000000010362000-memory.dmp	family_gh0strat
behavioral2/memory/4876-68-0x0000000010000000-0x0000000010362000-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

Checks computer location settings 2 TTPs 2 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-711569230-3659488422-571408806-1000\Control Panel\International\Geo\Nation	1eaae465bda927c1893a5744301cde9b.exe
Key value queried	\REGISTRY\USER\S-1-5-21-711569230-3659488422-571408806-1000\Control Panel\International\Geo\Nation	csrss.exe

Executes dropped EXE 5 IoCs

pid	Process
4544	csrss.exe
2036	Jufrxnb.exe
220	Jufrxnb.exe
4876	Jufrxnb.exe
4648	Jufrxnb.exe

UPX packed file 9 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral2/memory/4544-19-0x0000000010000000-0x0000000010362000-memory.dmp	upx
behavioral2/memory/4544-16-0x0000000010000000-0x0000000010362000-memory.dmp	upx
behavioral2/memory/4544-20-0x0000000010000000-0x0000000010362000-memory.dmp	upx
behavioral2/memory/220-45-0x0000000010000000-0x0000000010362000-memory.dmp	upx
behavioral2/memory/220-44-0x0000000010000000-0x0000000010362000-memory.dmp	upx
behavioral2/memory/220-41-0x0000000010000000-0x0000000010362000-memory.dmp	upx
behavioral2/memory/4876-64-0x0000000010000000-0x0000000010362000-memory.dmp	upx
behavioral2/memory/4876-65-0x0000000010000000-0x0000000010362000-memory.dmp	upx
behavioral2/memory/4876-68-0x0000000010000000-0x0000000010362000-memory.dmp	upx

Enumerates connected drives 3 TTPs 22 IoCs

Attempts to read the root path of hard drives other than the default C: drive.

Query Registry

T1012

Peripheral Device Discovery

T1120

System Information Discovery

T1082

description	ioc	Process
File opened (read-only)	\??\U:	Jufrxnb.exe
File opened (read-only)	\??\V:	Jufrxnb.exe
File opened (read-only)	\??\Y:	Jufrxnb.exe
File opened (read-only)	\??\B:	Jufrxnb.exe
File opened (read-only)	\??\J:	Jufrxnb.exe
File opened (read-only)	\??\K:	Jufrxnb.exe
File opened (read-only)	\??\N:	Jufrxnb.exe
File opened (read-only)	\??\Q:	Jufrxnb.exe
File opened (read-only)	\??\S:	Jufrxnb.exe
File opened (read-only)	\??\T:	Jufrxnb.exe
File opened (read-only)	\??\W:	Jufrxnb.exe
File opened (read-only)	\??\E:	Jufrxnb.exe
File opened (read-only)	\??\H:	Jufrxnb.exe
File opened (read-only)	\??\X:	Jufrxnb.exe
File opened (read-only)	\??\Z:	Jufrxnb.exe
File opened (read-only)	\??\G:	Jufrxnb.exe
File opened (read-only)	\??\P:	Jufrxnb.exe
File opened (read-only)	\??\M:	Jufrxnb.exe
File opened (read-only)	\??\O:	Jufrxnb.exe
File opened (read-only)	\??\R:	Jufrxnb.exe
File opened (read-only)	\??\I:	Jufrxnb.exe
File opened (read-only)	\??\L:	Jufrxnb.exe

Drops file in Program Files directory 2 IoCs

description	ioc	Process
File created	C:\Program Files (x86)\Microsoft Jufbhx\Jufrxnb.exe	csrss.exe
File opened for modification	C:\Program Files (x86)\Microsoft Jufbhx\Jufrxnb.exe	csrss.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Program crash 4 IoCs

pid	pid_target	Process	procid_target
4356	4544	WerFault.exe	87
4912	220	WerFault.exe	97
5020	2036	WerFault.exe	91
4040	4648	WerFault.exe	100

Checks processor information in registry 2 TTPs 6 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	Jufrxnb.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	Jufrxnb.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\1	Jufrxnb.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\1\ProcessorNameString	Jufrxnb.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\2	Jufrxnb.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	Jufrxnb.exe

Modifies data under HKEY_USERS 5 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\ActiveMovie\devenum	Jufrxnb.exe
Key created	\REGISTRY\USER\.DEFAULT\Software	Jufrxnb.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft	Jufrxnb.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\ActiveMovie	Jufrxnb.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\ActiveMovie\devenum\Version = "7"	Jufrxnb.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
4876	Jufrxnb.exe
4876	Jufrxnb.exe

Suspicious use of AdjustPrivilegeToken 8 IoCs

description	pid	Process
Token: SeDebugPrivilege	4544	csrss.exe
Token: SeDebugPrivilege	2036	Jufrxnb.exe
Token: SeDebugPrivilege	220	Jufrxnb.exe
Token: SeDebugPrivilege	220	Jufrxnb.exe
Token: SeDebugPrivilege	220	Jufrxnb.exe
Token: SeDebugPrivilege	4876	Jufrxnb.exe
Token: SeDebugPrivilege	4648	Jufrxnb.exe
Token: SeDebugPrivilege	4876	Jufrxnb.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 928 wrote to memory of 4544	928	1eaae465bda927c1893a5744301cde9b.exe	87
PID 928 wrote to memory of 4544	928	1eaae465bda927c1893a5744301cde9b.exe	87
PID 928 wrote to memory of 4544	928	1eaae465bda927c1893a5744301cde9b.exe	87
PID 4544 wrote to memory of 2036	4544	csrss.exe	91
PID 4544 wrote to memory of 2036	4544	csrss.exe	91
PID 4544 wrote to memory of 2036	4544	csrss.exe	91
PID 220 wrote to memory of 4876	220	Jufrxnb.exe	99
PID 220 wrote to memory of 4876	220	Jufrxnb.exe	99
PID 220 wrote to memory of 4876	220	Jufrxnb.exe	99
PID 220 wrote to memory of 4648	220	Jufrxnb.exe	100
PID 220 wrote to memory of 4648	220	Jufrxnb.exe	100
PID 220 wrote to memory of 4648	220	Jufrxnb.exe	100

C:\Users\Admin\AppData\Local\Temp\1eaae465bda927c1893a5744301cde9b.exe
"C:\Users\Admin\AppData\Local\Temp\1eaae465bda927c1893a5744301cde9b.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:928
- C:\Users\csrss.exe
  "C:\Users\csrss.exe"
  2⤵
  - Checks computer location settings
  - Executes dropped EXE
  - Drops file in Program Files directory
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:4544
- - C:\Program Files (x86)\Microsoft Jufbhx\Jufrxnb.exe
    "C:\Program Files (x86)\Microsoft Jufbhx\Jufrxnb.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious use of AdjustPrivilegeToken
    PID:2036
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 2036 -s 524
      4⤵
      Program crash
      PID:5020
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 4544 -s 1068
    3⤵
    - Program crash
    PID:4356

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 460 -p 4544 -ip 4544
1⤵
PID:2516

C:\Program Files (x86)\Microsoft Jufbhx\Jufrxnb.exe
"C:\Program Files (x86)\Microsoft Jufbhx\Jufrxnb.exe"
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:220
- C:\Program Files (x86)\Microsoft Jufbhx\Jufrxnb.exe
  "C:\Program Files (x86)\Microsoft Jufbhx\Jufrxnb.exe"
  2⤵
  - Executes dropped EXE
  - Enumerates connected drives
  - Checks processor information in registry
  - Modifies data under HKEY_USERS
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:4876
- C:\Program Files (x86)\Microsoft Jufbhx\Jufrxnb.exe
  "C:\Program Files (x86)\Microsoft Jufbhx\Jufrxnb.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:4648
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 4648 -s 552
    3⤵
    - Program crash
    PID:4040
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 220 -s 640
  2⤵
  - Program crash
  PID:4912

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 524 -p 2036 -ip 2036
1⤵
PID:1900

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 544 -p 220 -ip 220
1⤵
PID:4928

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 564 -p 4648 -ip 4648
1⤵
PID:452

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Peripheral Device Discovery

Query Registry

System Information Discovery

4

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/220-45-0x0000000010000000-0x0000000010362000-memory.dmp

Filesize
3.4MB

Download
memory/220-62-0x0000000000400000-0x0000000000863000-memory.dmp

Filesize
4.4MB

Download
memory/220-41-0x0000000010000000-0x0000000010362000-memory.dmp

Filesize
3.4MB

Download
memory/220-44-0x0000000010000000-0x0000000010362000-memory.dmp

Filesize
3.4MB

Download
memory/2036-63-0x0000000000400000-0x0000000000863000-memory.dmp

Filesize
4.4MB

Download
memory/4544-46-0x0000000000400000-0x0000000000863000-memory.dmp

Filesize
4.4MB

Download
memory/4544-14-0x0000000002A00000-0x0000000002A61000-memory.dmp

Filesize
388KB

Download
memory/4544-21-0x0000000000400000-0x0000000000863000-memory.dmp

Filesize
4.4MB

Download
memory/4544-16-0x0000000010000000-0x0000000010362000-memory.dmp

Filesize
3.4MB

Download
memory/4544-19-0x0000000010000000-0x0000000010362000-memory.dmp

Filesize
3.4MB

Download
memory/4544-13-0x0000000000C00000-0x0000000000E00000-memory.dmp

Filesize
2.0MB

Download
memory/4544-47-0x0000000000400000-0x0000000000461000-memory.dmp

Filesize
388KB

Download
memory/4544-20-0x0000000010000000-0x0000000010362000-memory.dmp

Filesize
3.4MB

Download
memory/4544-15-0x0000000000400000-0x0000000000461000-memory.dmp

Filesize
388KB

Download
memory/4648-66-0x0000000000400000-0x0000000000863000-memory.dmp

Filesize
4.4MB

Download
memory/4876-64-0x0000000010000000-0x0000000010362000-memory.dmp

Filesize
3.4MB

Download
memory/4876-65-0x0000000010000000-0x0000000010362000-memory.dmp

Filesize
3.4MB

Download
memory/4876-67-0x0000000074C20000-0x0000000074C59000-memory.dmp

Filesize
228KB

Download
memory/4876-68-0x0000000010000000-0x0000000010362000-memory.dmp

Filesize
3.4MB

Download
memory/4876-69-0x0000000000400000-0x0000000000863000-memory.dmp

Filesize
4.4MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads