gh0strat | 6b3a2c157f5ec50da433b83753ccbb5e71e2266172bd9f052db27ad000e167b3

General

Target

6b3a2c157f5ec50da433b83753ccbb5e71e2266172bd9f052db27ad000e167b3.exe
Size

412KB
MD5

96dfb9cdb8230f73542cfd0e3ace17eb
SHA1

d3c0c7896fc83021970ede243867530f78a3049f
SHA256

6b3a2c157f5ec50da433b83753ccbb5e71e2266172bd9f052db27ad000e167b3
SHA512

3464482a5f9a68645f7717bd6e02e06352b8826b1ec5106af1bade99ebd993fea1f19541bb0a1123b69ebde31db2dd44ab174844979f12865320332b905699e1
SSDEEP

12288:fl8uWPifKE9CdhlkidOEn6EM55uwNuAQj:fl8uLfKE96h/OEnV6ej

Score

10^/10

gh0strat purplefox discovery rat rootkit trojan upx

Malware Config

Signatures

Detect PurpleFox Rootkit 4 IoCs

Detect PurpleFox Rootkit.

rootkit

resource	yara_rule
behavioral2/memory/1388-2-0x0000000010000000-0x00000000101BE000-memory.dmp	purplefox_rootkit
behavioral2/memory/1388-4-0x0000000010000000-0x00000000101BE000-memory.dmp	purplefox_rootkit
behavioral2/memory/1388-3-0x0000000010000000-0x00000000101BE000-memory.dmp	purplefox_rootkit
behavioral2/memory/992-17-0x0000000010000000-0x00000000101BE000-memory.dmp	purplefox_rootkit

Gh0st RAT payload 4 IoCs

resource	yara_rule
behavioral2/memory/1388-2-0x0000000010000000-0x00000000101BE000-memory.dmp	family_gh0strat
behavioral2/memory/1388-4-0x0000000010000000-0x00000000101BE000-memory.dmp	family_gh0strat
behavioral2/memory/1388-3-0x0000000010000000-0x00000000101BE000-memory.dmp	family_gh0strat
behavioral2/memory/992-17-0x0000000010000000-0x00000000101BE000-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
PurpleFox
PurpleFox is an exploit kit used to distribute other malware families and first seen in 2018.
rootkit trojan purplefox
Purplefox family
purplefox

Checks computer location settings 2 TTPs 1 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-1-5-21-2437139445-1151884604-3026847218-1000\Control Panel\International\Geo\Nation	6b3a2c157f5ec50da433b83753ccbb5e71e2266172bd9f052db27ad000e167b3.exe

Executes dropped EXE 1 IoCs

pid	Process
992	sainbox.exe

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral2/memory/1388-2-0x0000000010000000-0x00000000101BE000-memory.dmp	upx
behavioral2/memory/1388-4-0x0000000010000000-0x00000000101BE000-memory.dmp	upx
behavioral2/memory/1388-0-0x0000000010000000-0x00000000101BE000-memory.dmp	upx
behavioral2/memory/1388-3-0x0000000010000000-0x00000000101BE000-memory.dmp	upx
behavioral2/memory/992-17-0x0000000010000000-0x00000000101BE000-memory.dmp	upx

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

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 4 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	6b3a2c157f5ec50da433b83753ccbb5e71e2266172bd9f052db27ad000e167b3.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sainbox.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	PING.EXE

System Network Configuration Discovery: Internet Connection Discovery 1 TTPs 2 IoCs

Adversaries may check for Internet connectivity on compromised systems.

discovery

Internet Connection Discovery

T1016.001

pid	Process
2136	cmd.exe
2124	PING.EXE

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
2124	PING.EXE

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeIncBasePriorityPrivilege	1388	6b3a2c157f5ec50da433b83753ccbb5e71e2266172bd9f052db27ad000e167b3.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 1388 wrote to memory of 992	1388	6b3a2c157f5ec50da433b83753ccbb5e71e2266172bd9f052db27ad000e167b3.exe	83
PID 1388 wrote to memory of 992	1388	6b3a2c157f5ec50da433b83753ccbb5e71e2266172bd9f052db27ad000e167b3.exe	83
PID 1388 wrote to memory of 992	1388	6b3a2c157f5ec50da433b83753ccbb5e71e2266172bd9f052db27ad000e167b3.exe	83
PID 1388 wrote to memory of 2136	1388	6b3a2c157f5ec50da433b83753ccbb5e71e2266172bd9f052db27ad000e167b3.exe	84
PID 1388 wrote to memory of 2136	1388	6b3a2c157f5ec50da433b83753ccbb5e71e2266172bd9f052db27ad000e167b3.exe	84
PID 1388 wrote to memory of 2136	1388	6b3a2c157f5ec50da433b83753ccbb5e71e2266172bd9f052db27ad000e167b3.exe	84
PID 2136 wrote to memory of 2124	2136	cmd.exe	86
PID 2136 wrote to memory of 2124	2136	cmd.exe	86
PID 2136 wrote to memory of 2124	2136	cmd.exe	86

C:\Users\Admin\AppData\Local\Temp\6b3a2c157f5ec50da433b83753ccbb5e71e2266172bd9f052db27ad000e167b3.exe
"C:\Users\Admin\AppData\Local\Temp\6b3a2c157f5ec50da433b83753ccbb5e71e2266172bd9f052db27ad000e167b3.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1388
- C:\ProgramData\Microsoft\Windows\Start Menu\Programs\Startup\sainbox.exe
  "C:\ProgramData\Microsoft\Windows\Start Menu\Programs\Startup\sainbox.exe"
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  PID:992
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c ping -n 2 127.0.0.1 > nul && del C:\Users\Admin\AppData\Local\Temp\6B3A2C~1.EXE > nul
  2⤵
  - System Location Discovery: System Language Discovery
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious use of WriteProcessMemory
  PID:2136
- - C:\Windows\SysWOW64\PING.EXE
    ping -n 2 127.0.0.1
    3⤵
    - System Location Discovery: System Language Discovery
    - System Network Configuration Discovery: Internet Connection Discovery
    - Runs ping.exe
    PID:2124

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

1

T1012

Remote System Discovery

1

T1018

System Information Discovery

2

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

System Network Configuration Discovery

1

T1016

Internet Connection Discovery

1

T1016.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\ProgramData\Microsoft\Windows\Start Menu\Programs\StartUp\sainbox.exe

Filesize
412KB

MD5
96dfb9cdb8230f73542cfd0e3ace17eb

SHA1
d3c0c7896fc83021970ede243867530f78a3049f

SHA256
6b3a2c157f5ec50da433b83753ccbb5e71e2266172bd9f052db27ad000e167b3

SHA512
3464482a5f9a68645f7717bd6e02e06352b8826b1ec5106af1bade99ebd993fea1f19541bb0a1123b69ebde31db2dd44ab174844979f12865320332b905699e1

Download Submit
memory/992-17-0x0000000010000000-0x00000000101BE000-memory.dmp

Filesize
1.7MB

Download
memory/1388-2-0x0000000010000000-0x00000000101BE000-memory.dmp

Filesize
1.7MB

Download
memory/1388-4-0x0000000010000000-0x00000000101BE000-memory.dmp

Filesize
1.7MB

Download
memory/1388-0-0x0000000010000000-0x00000000101BE000-memory.dmp

Filesize
1.7MB

Download
memory/1388-3-0x0000000010000000-0x00000000101BE000-memory.dmp

Filesize
1.7MB

Download

Analysis

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